CN111171506A - Low-internal-stress polycarbonate material and preparation method thereof - Google Patents
Low-internal-stress polycarbonate material and preparation method thereof Download PDFInfo
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- CN111171506A CN111171506A CN201811337926.4A CN201811337926A CN111171506A CN 111171506 A CN111171506 A CN 111171506A CN 201811337926 A CN201811337926 A CN 201811337926A CN 111171506 A CN111171506 A CN 111171506A
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- polycarbonate
- internal stress
- low internal
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Links
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 97
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 97
- 239000000463 material Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920001470 polyketone Polymers 0.000 claims abstract description 32
- 239000000155 melt Substances 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 14
- 230000003179 granulation Effects 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 14
- 239000003063 flame retardant Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 239000011256 inorganic filler Substances 0.000 claims description 4
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 claims description 2
- 239000003017 thermal stabilizer Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 19
- 239000000203 mixture Substances 0.000 description 17
- 229920001577 copolymer Polymers 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 239000008188 pellet Substances 0.000 description 12
- -1 polytetrafluoroethylene Polymers 0.000 description 9
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 229920009204 Methacrylate-butadiene-styrene Polymers 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000012760 heat stabilizer Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004609 Impact Modifier Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229920007019 PC/ABS Polymers 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- ACYXOHNDKRVKLH-UHFFFAOYSA-N 5-phenylpenta-2,4-dienenitrile prop-2-enoic acid Chemical compound OC(=O)C=C.N#CC=CC=CC1=CC=CC=C1 ACYXOHNDKRVKLH-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BZDKYAZTCWRUDZ-UHFFFAOYSA-N buta-1,3-diene;methyl 2-methylprop-2-enoate;prop-2-enenitrile;styrene Chemical compound C=CC=C.C=CC#N.COC(=O)C(C)=C.C=CC1=CC=CC=C1 BZDKYAZTCWRUDZ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001907 coumarones Chemical class 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FGDAXMHZSNXUFJ-UHFFFAOYSA-N ethene;prop-1-ene;prop-2-enenitrile Chemical group C=C.CC=C.C=CC#N FGDAXMHZSNXUFJ-UHFFFAOYSA-N 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002443 hydroxylamines Chemical class 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910001853 inorganic hydroxide Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 1
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920012128 methyl methacrylate acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 150000007970 thio esters Chemical class 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/02—Condensation polymers of aldehydes or ketones only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a low internal stress polycarbonate material and a preparation method thereof, wherein the low internal stress polycarbonate material comprises the following components in parts by weight: 20-45 parts of polycarbonate; 55-80 parts of polyketone; wherein the melt flow index of the polyketone is between 100 and 300g/10min, and the test conditions of the melt flow index are that the test temperature is 240 ℃ and the load is 2.16 kg. The low internal stress polycarbonate material provided by the invention has the characteristics of simple components, simple and feasible preparation method, good fluidity and easiness in processing and forming in the preparation process, and the product has low internal stress and excellent comprehensive performance.
Description
Technical Field
The invention relates to the field of polymer composite materials, in particular to a low-internal-stress polycarbonate material and a preparation method thereof.
Background
Polycarbonate (PC) has the advantages of high impact strength, high light transmittance, excellent mechanical property, good heat resistance, flame retardance, good dimensional stability and the like, but PC also has the defects of large internal stress, high melt viscosity, poor processing fluidity and the like, particularly, a workpiece is easy to generate stress cracking, so that the application of PC materials is limited.
The invention patent of China "a novel low internal stress PC composition" (CN 106810840A) mentions that a low internal stress PC composition is prepared by adding polycarbonate, acrylate, metal oxide, cross-linking agent and the like, internal stress in PC is released through the fracture and formation of ionic bonds, and the internal stress of PC is reduced through the toughening effect of acrylate.
The invention patent of China, "a PC alloy material and a preparation method and application thereof" (CN 107739500A) mentions that the PC alloy material with good fluidity and low internal stress is prepared by adding polycarbonate, polyethylene glycol terephthalate-1, 4-cyclohexane dimethanol ester and fibrous filler, and the effect is better after adding a proper amount of copper and zirconium elements.
The Chinese patent "a high-fluidity, low-internal stress PC/ABS composition" (CN 106751683A) mentions that by adding PC, phosphorus-containing flame retardant, ABS, impact modifier, polyester, a small amount of bisphenol A, etc., it is considered that by adding polyester and a small amount of bisphenol A, the internal stress of PC/ABS can be reduced and the fluidity can be improved.
The existing technical scheme of the low internal stress polycarbonate material has poor effect of reducing the internal stress and can not solve the problem that a workpiece is easy to crack.
Disclosure of Invention
In view of the above, the invention provides a low internal stress polycarbonate material, which has the characteristics of simple components, simple and easy preparation method, good fluidity and easy processing and forming during preparation, low internal stress of a workpiece and excellent comprehensive performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a low-internal-stress polycarbonate material which comprises the following components in parts by weight:
20 to 45 parts by weight of polycarbonate, for example 20, 30, 40, 45 parts by weight;
55-80 parts by weight of polyketone, for example 55, 60, 70, 80 parts by weight;
wherein the melt flow index of the polyketone is between 100 and 300g/10min, such as 100, 150, 180, 200, 250 and 300g/10min, and the melt flow index is measured under the conditions of a test temperature of 240 ℃ and a load of 2.16kg according to the ISO1183 standard.
According to the invention, the polyketone with the melt flow index of 100-300g/10min (240 ℃/2.16kg, determined according to ISO1183 standard) is added into the polycarbonate, and the polycarbonate and the polyketone are combined and matched according to the use amounts of 20-45 parts by weight and 55-80 parts by weight, so that a composition with good fluidity and easy processing and forming can be obtained, and the obtained product has the characteristics of low internal stress, difficulty in cracking and good comprehensive performance.
The low internal stress polycarbonate material can be added with other components or not. In some embodiments, the low internal stress polycarbonate material consists of the following components in parts by weight: 20-45 parts of polycarbonate; 55-80 parts of polyketone; and the sum of the parts by weight of polycarbonate and polyketone is 100 parts by weight.
In some embodiments, the low internal stress polycarbonate material consists of the following components in parts by weight:
20-45 parts by weight of polycarbonate, preferably 29-44 parts by weight;
55-80 parts of polyketone, preferably 55-70 parts;
0 to 25 parts by weight, preferably 1 to 15 parts by weight, for example 1, 5, 10, 15 parts by weight, of further components;
and the sum of the parts by weight of the polycarbonate, the polyketone and the other components is 100 parts by weight.
The other components are not particularly limited, and components allowed in the art may be added according to different needs of the product, for example, one or a combination of two or more of an impact modification material, an inorganic filler, a flame retardant, an anti-dripping agent, a compatibilizer, a lubricant, an antioxidant, a plasticizer, a surfactant, an ultraviolet absorber, and a heat stabilizer may be added, and specific amounts of the other components may be determined as needed, which is not described herein again.
In the formula system of the invention, polyketone (240 ℃/2.16kg) with the melt flow index of 100-300g/10min is selected, and the polyketone and polycarbonate adopting the melt flow index are used in combination according to 20-45 parts by weight of polycarbonate and 55-80 parts by weight of polyketone, so that the processing fluidity can be obviously improved, and the internal stress of products can be obviously reduced; in order to obtain a more preferable combination effect, the melt flow index is more preferably 150 to 280g/10min, and still more preferably 180 to 250g/10 min. Polyketones meeting the above melt flow index requirements may be employed, and preferably, the polyketones have the following structural formula (I):
wherein the ratio of n to m in formula (I) is 0.01-0.6, such as 0.01, 0.1, 0.2, 0.4, 0.6, etc. Polyketones can be polymerized from carbon monoxide and olefins (ethylene and propylene), and commercially available raw materials, such as those available from Korea-Weekly corporation, can be used.
The polycarbonate used in the present invention is not particularly limited, and various polycarbonates known in the art can be used, for example, polycarbonates having a melt flow index of 3 to 65g/10min, preferably 5 to 50g/10min, more preferably 7 to 35g/10min, under the test conditions of a test temperature of 300 ℃ and a load of 1.2kg, in accordance with ISO1183 standard, in some embodiments. The polycarbonate may be specifically selected from one or a combination of two or more of aromatic polycarbonate, aliphatic polycarbonate, and aromatic-aliphatic polycarbonate, and bisphenol a polycarbonate is preferable.
Other components may or may not be added to the low internal stress polycarbonate material, and according to the product requirements, for example, one or a combination of more than two of an impact modification material, an inorganic filler, a flame retardant, an anti-dripping agent, a compatilizer, a lubricant, an antioxidant, a plasticizer, a surfactant, an ultraviolet absorber, a heat stabilizer and the like can be added.
Among them, the impact modifying material may be selected, for example, but not limited to, one or a combination of two or more of styrene-butadiene-acrylonitrile copolymer (ABS), methyl methacrylate-acrylonitrile-butadiene-styrene copolymer (MABS), methyl methacrylate-butadiene-styrene copolymer (MBS), acrylate-styrene-acrylonitrile copolymer (ASA), methyl methacrylate-butadiene copolymer (MB), acrylonitrile-ethylene propylene rubber-styrene copolymer (AES), styrene-butadiene copolymer (SB), methyl methacrylate-acrylate copolymer (MA), methyl methacrylate-acrylate-styrene copolymer (MAs). Impact modifiers can be used in amounts of, for example, 0 to 20 parts by weight, such as 5, 10, 15, 20 parts by weight, and the like.
The inorganic filler may be selected from, but not limited to, one or a combination of two or more of calcium sulfate, calcium carbonate, alumina, silica, titanium dioxide, iron oxide, aluminum silicate, magnesium silicate, vanadium oxide, zinc oxide, tin oxide, magnesium hydroxide, aluminum hydroxide, zinc borate, barium sulfate, ceramic microbeads, wood flour, glass microbeads, dolomite, vermiculite, silica, zeolite, mica, clay, montmorillonite, talc, diatomaceous earth, kaolin, glass fiber, molecular sieve, attapulgite, carbon nanotubes, graphene, graphite, carbon black, and the like, and may be used in an amount of, for example, 0 to 20 parts by weight, such as 5, 10, 15, 20 parts by weight, and the like.
The flame retardant may be selected from, but not limited to, one or a combination of two or more of phosphorus flame retardants, nitrogen flame retardants, environmentally friendly halogen flame retardants, organic metal salt flame retardants, inorganic hydroxide flame retardants, sulfonate flame retardants, silicon flame retardants, and the like, and the amount of the flame retardant may be, for example, 0 to 10 parts by weight, such as 1, 3, 5, 10 parts by weight, and the like.
Wherein the anti-dripping agent can be selected from but not limited to fluorine-containing anti-dripping agents, preferably polytetrafluoroethylene, and the anti-dripping agent can be used in an amount of, for example, 0 to 3 parts by weight, such as 0.1, 0.5, 1, 3 parts by weight, and the like.
The compatibilizer may be selected from one or a combination of two or more of styrene-butadiene-acrylonitrile copolymer graft, styrene/maleic anhydride copolymer, polyethylene graft, methyl methacrylate/butadiene/styrene copolymer, polypropylene graft, epoxy resin, ethylene/acrylate copolymer, styrene/acrylonitrile copolymer graft, and the like, and may be used in an amount of 0 to 10 parts by weight, such as 1, 3, 5, 10 parts by weight, and the like, for example.
The lubricant may be selected from one or a combination of two or more of fatty alcohols, metallic soaps, fatty acids, fatty acid esters, montanic acid and derivatives thereof, amide waxes, saturated hydrocarbons, polyolefin waxes and derivatives thereof, silicones and silicone powders, organic fluorides, and the like, and the amount of the lubricant used may be, for example, 0.01 to 3 parts by weight, such as 0.01, 0.1, 1, 2 parts by weight, and the like.
The antioxidant may be selected from, but not limited to, one or a combination of two or more of hindered phenols, phosphites, thioesters, benzofurans, acryl-modified phenols, hydroxylamines, etc., and the amount of the antioxidant may be, for example, 0.01 to 3 parts by weight, such as 0.01, 0.1, 1, 2 parts by weight, etc.
The plasticizer may be selected from, but not limited to, one or a combination of two or more of benzene polycarboxylic acid ester, polyester plasticizer, aliphatic dicarboxylic acid ester, epoxy plasticizer, terephthalate, citrate, polyol ester, etc., and may be used in an amount of, for example, 0 to 5 parts by weight, such as 0.5, 1, 3, 5 parts by weight, etc.
The surfactant may be selected from, but not limited to, one or a combination of two or more of carboxylate type, sulfonate type, sulfate type, phosphate type, amine salt type, quaternary ammonium salt type, lecithin type, amino acid type, betaine type, fatty acid glyceride type, polyol type, polyoxyethylene type, etc., and the amount of the surfactant used may be, for example, 0 to 3 parts by weight, such as 0.1, 0.5, 1, 3 parts by weight, etc.
The ultraviolet absorber may be selected from one or a combination of two or more of benzotriazoles, triazines, and the like, and the amount of the ultraviolet absorber used may be, for example, 0 to 3 parts by weight, such as 0.1, 0.5, 1, 3 parts by weight, and the like.
The heat stabilizer may be selected from, but not limited to, one or a combination of two or more of organic phosphites, organic phosphates, phosphonates, and the like, and may be used in an amount of, for example, 0 to 3 parts by weight, such as 0.1, 0.5, 1, 3 parts by weight, and the like.
The invention also provides the preparation method of the low internal stress polycarbonate material, which comprises the steps of mixing, extruding, granulating, drying and forming the components in the low internal stress polycarbonate material;
preferably, the preparation method specifically comprises the following steps:
1) adding each component in the low-internal-stress polycarbonate material into an extruder for extrusion granulation, preferably controlling the temperature of a processing temperature zone to be 220-300 ℃, such as 220, 240, 280, 300 ℃ and the like, and the rotating speed of a main machine to be 150-500r/min, such as 150, 200, 300, 400, 500r/min and the like; preferably, the extruder is a twin screw extruder.
2) Drying the granules obtained in the step 1), preferably at 70-120 ℃, and preferably for 3-4 h;
3) molding the dried granules in the step 2) in a mold, preferably controlling the mold temperature to be 50-100 ℃, the machine barrel temperature to be 220-300 ℃, the injection speed to be 30-100mm/s and the injection pressure to be 30-100 bar.
The invention also provides a low internal stress polycarbonate material product which is obtained by processing and molding the low internal stress polycarbonate material or is prepared according to the preparation method.
The technical scheme provided by the invention has the following beneficial effects:
according to the low-internal-stress polycarbonate material, the polycarbonate and the polyketone with the melt flow index of 100-300g/10min are combined and matched according to 20-45 parts by weight of the polycarbonate and 55-80 parts by weight of the polyketone, so that the low-internal-stress polycarbonate material has excellent fluidity during processing, is easy to process and form, greatly reduces the internal stress of the polycarbonate material, and has low internal stress of a workpiece. In addition, the preparation method of the composition is simple and easy to implement, and is very suitable for popularization.
Detailed Description
In order to better understand the technical solution of the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
The raw materials used in the following examples and comparative examples are illustrated below:
PC: polycarbonate, Clarnate a1225 (melt flow index MFR 18g/10min, test conditions 300 ℃/1.2kg), manufactured by watsland chemicals group ltd;
POK-1: polyketone, M130A (melt flow index MFR 210g/10min, test conditions 240 ℃/2.16kg), having the formula (I) wherein n: m is 0.2, manufactured by Korea-Xiaoxing corporation;
POK-2: polyketone, M630A (melt flow index MFR 10g/10min, test conditions 240 ℃/2.16kg), having the formula (I) wherein n: m is 0.25, manufactured by Korea-Weekly corporation;
ABS: styrene-butadiene-acrylonitrile copolymer, 8391, produced by Shanghai Gaoqiao petrochemical company;
PBT: polybutylene terephthalate, 1100-211M, manufactured by Taiwan Changchun, China;
MBS: methylmethacrylate-butadiene-styrene copolymer, EM500, manufactured by LG corporation of Korea;
SAG: styrene-acrylonitrile-GMA, SAG002, produced by Jiangsu Jiayi company;
PP-g-MAH: maleic anhydride grafted polypropylene, CMG9801, produced by Jiangsu Jiayi company;
talc powder: m05SCL, manufactured by Monsanto corporation;
lubricant: PETS, manufactured by Longsha corporation;
antioxidant: b900, manufactured by double bond chemical company;
the parts of the raw materials appearing in the following examples or comparative examples are parts by weight.
Example 1
Comprises the following raw materials in parts by weight: 20 parts of PC, POK-1: 80 parts of the raw materials. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 240 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 85 ℃, the machine barrel temperature to be 250 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 2
Comprises the following raw materials in parts by weight: PC: 20 parts, POK-1: 55 parts of other components (10 parts of ABS, 10 parts of talcum powder, 4 parts of PP-g-MAH, 0.5 part of PETS and 0.5 part of B900): and 25 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 240 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 85 ℃, the machine barrel temperature to be 250 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 3
Comprises the following raw materials in parts by weight: PC: 25 parts, POK-1: 60 parts of other components (ABS: 10 parts by weight, SAG: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight): 15 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 245 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 250 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 4
Comprises the following raw materials in parts by weight: PC: 30 parts, POK-1: 65 parts of other components (PP-g-MAH: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight): 5 parts of the raw materials. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 250 ℃ and the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 255 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 5
Comprises the following raw materials in parts by weight: PC: 35 parts, POK-1: 60 parts of other components (MBS: 4 parts by weight, PETS: 0.5 parts by weight, B900: 0.5 parts by weight): 5 parts of the raw materials. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 250 ℃ and the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 255 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 6
Comprises the following raw materials in parts by weight: PC: 40 parts, POK-1: 55 parts of other components (SAG: 4 parts by weight, PETS: 0.5 parts by weight, B900: 0.5 parts by weight): 5 parts of the raw materials. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 255 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 255 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Example 7
Comprises the following raw materials in parts by weight: PC: 45 parts, POK-1: and 55 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 260 ℃ and the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 260 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Comparative example 1 (without polyketone)
Comprises the following raw materials in parts by weight: PC: 75 parts of other components (10 parts of talcum powder, 10 parts of MBS, 4 parts of PP-g-MAH, 0.5 part of PETS and 0.5 part of B900). Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 27 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 95 ℃, the machine barrel temperature to be 275 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Comparative example 2 (replacement of polyketone by ABS)
Comprises the following raw materials in parts by weight: PC: 40 parts, ABS: 55 parts of other components (PP-g-MAH: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight) 5 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 255 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 2550 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Comparative example 3 (replacement of polyketone by PBT)
Comprises the following raw materials in parts by weight: PC: 40 parts, PBT: 55 parts of other components (PP-g-MAH: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight) 5 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 255 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 255 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Comparative example 4
Comprises the following raw materials in parts by weight: PC: 70 parts, POK-1: 25 parts of other components (PP-g-MAH: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight) 5 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 270 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 95 ℃, the machine barrel temperature to be 270 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
Comparative example 5
Comprises the following raw materials in parts by weight: PC: 40 parts, POK-2: 55 parts of other components (PP-g-MAH: 4 parts by weight, PETS: 0.5 part by weight, B900: 0.5 part by weight) 5 parts. Adding the composition into a double-screw extruder for extrusion granulation, controlling the temperature of a processing temperature zone to be 255 ℃, and controlling the rotating speed of a main machine to be 300 r/min; drying the obtained extruded pellets at 100 ℃ for 4h to sufficiently remove moisture; keeping the mould clean, controlling the mould temperature to be 90 ℃, the machine barrel temperature to be 255 ℃, the injection speed to be 70mm/s and the injection pressure to be 70 bar.
The results of testing the properties of the injection-molded articles of polycarbonate material prepared in the examples and comparative examples are given in table 1, wherein:
notched impact strength (or impact strength) was measured according to ASTM D256 under 23 ℃ and with a tester of the type CEAST9050 pendulum impact tester.
Melt viscosity according to ISO11443-AStandard determination, temperature and shear rate conditions are 280 ℃/1000s-1The test instrument is a capillary rheometer.
The helix test is through fixed board and the condition of moulding plastics, surveys the processing flow property of material according to helix length, and the longer the helix, it is better to explain material processing mobility.
Two methods are used for internal stress detection, one method being (internal stress detection-notch crack condition): cutting a notch (2mm) of the impact spline, immersing the spline in a carbon tetrachloride solvent for 10s, taking out and observing the crack condition at the notch of the impact spline, and respectively rating as '+++, ++++, ++, +', wherein the more '+' indicates that the crack is more obvious and the internal stress of the part is larger.
Another method is (internal stress test-average soaking time): immersing a 2mm injection molding sample plate into a beaker filled with carbon tetrachloride, taking out the sample plate by using a pair of tweezers every other one minute, observing whether cracks exist on the surface by naked eyes under natural light, re-immersing the sample plate into a solvent if no cracks exist, continuing to observe after one minute until the soaking time is recorded after the cracks appear, wherein the unit is min, 10 sample plates are respectively tested for each group of samples, the average value is taken, and the longer the crack appears after soaking, the smaller the internal stress of the group of samples is.
Heat deflection temperature was measured according to ASTM D648 under the conditions of a load of 1.82MPa, a temperature rise rate of 120 ℃/h and a test apparatus of HV6M Heat deflection and Vicat tester from Instron.
TABLE 1 table of properties of examples and comparative examples
The internal stress of the material is evaluated mainly by soaking a sample strip with a notch and a sample plate in a solvent.
As can be seen from the examples and the comparative examples 1 to 3, the internal stress of the prepared polycarbonate material is remarkably reduced by combining the polycarbonate and the polyketone with the melt flow index of 100 to 300g/10min according to specific parts by weight and optionally adding other components, and the internal stress is shown in that the notch crack is less and the average soaking time of a sample plate is long; and the fluidity is good in the processing process, and the processing and molding are easy. It can be seen from each of examples and comparative examples 4 and 5 that the internal stress of the article is still large when the amount of POK added is low or when a low flow POK is used. In addition, the melt viscosity of the materials in each embodiment is obviously lower than that of each comparative example, and the length of the spiral line is greatly increased, so that the low-internal-stress polycarbonate material has the advantages of low internal stress of a workpiece, low viscosity, good processing flowability and the like.
In conclusion, the low internal stress polycarbonate material formula system provided by the invention can be used for preparing a product with low internal stress of a workpiece through a simple and feasible preparation process, and the prepared low internal stress polycarbonate product has low material viscosity and excellent processing flow property during preparation.
It will be appreciated by those skilled in the art that modifications or adaptations to the invention may be made in light of the teachings of the present specification. Such modifications or adaptations are intended to be within the scope of the present invention as defined in the claims.
Claims (10)
1. The low-internal-stress polycarbonate material is characterized by comprising the following components in parts by weight:
20-45 parts of polycarbonate;
55-80 parts of polyketone;
wherein the melt flow index of the polyketone is between 100 and 300g/10min, and the test conditions of the melt flow index are that the test temperature is 240 ℃ and the load is 2.16 kg.
2. The low internal stress polycarbonate material of claim 1, wherein the low internal stress polycarbonate material is composed of the following components in parts by weight:
20-45 parts of polycarbonate;
55-80 parts of polyketone;
and the sum of the parts by weight of polycarbonate and polyketone is 100 parts by weight.
3. The low internal stress polycarbonate material of claim 1, wherein the low internal stress polycarbonate material is composed of the following components in parts by weight:
20-45 parts by weight of polycarbonate, preferably 29-44 parts by weight;
55-80 parts of polyketone, preferably 55-70 parts;
0 to 25 parts by weight of other components, preferably 1 to 15 parts by weight;
and the sum of the parts by weight of the polycarbonate, the polyketone and the other components is 100 parts by weight.
4. The low internal stress polycarbonate material of any of claims 1-3, wherein the polyketone has the following structural formula (I):
wherein the ratio of n to m in formula (I) is 0.01-0.6.
5. The low internal stress polycarbonate material according to any of claims 1 to 4, wherein the polyketone has a melt flow index of 150 to 280g/10min, more preferably 180 to 250g/10min, the melt flow index being measured at a test temperature of 240 ℃ under a load of 2.16 kg.
6. The low internal stress polycarbonate material according to any of claims 1 to 5, wherein the polycarbonate has a melt flow index of between 3 and 65g/10min, preferably between 5 and 50g/10min, more preferably between 7 and 35g/10min, at a test temperature of 300 ℃ under a load of 1.2 kg.
7. The low internal stress polycarbonate material according to any of claims 1 to 6, wherein the polycarbonate is selected from one or a combination of two or more of aromatic polycarbonate, aliphatic polycarbonate, aromatic-aliphatic polycarbonate, preferably bisphenol A polycarbonate.
8. The low internal stress polycarbonate material of any of claims 3-7, wherein the additional components comprise one or a combination of two or more of an impact modifying material, an inorganic filler, a flame retardant, an anti-drip agent, a compatibilizer, a lubricant, an antioxidant, a plasticizer, a surfactant, an ultraviolet absorber, and a thermal stabilizer.
9. The method for preparing the low internal stress polycarbonate material according to claims 1 to 8, wherein the components in the low internal stress polycarbonate material are mixed, extruded, granulated, dried and formed;
preferably, the preparation method specifically comprises the following steps:
1) adding the components in the low-internal-stress polycarbonate material into an extruder for extrusion granulation, preferably controlling the temperature of a processing temperature zone to be 220-300 ℃, preferably controlling the rotating speed of a main machine to be 150-500r/min, and preferably selecting the extruder as a double-screw extruder;
2) drying the granules obtained in the step 1), preferably at 70-120 ℃, and preferably for 3-4 h;
3) molding the dried granules in the step 2) in a mold, preferably controlling the mold temperature to be 50-100 ℃, the machine barrel temperature to be 220-300 ℃, the injection speed to be 30-100mm/s and the injection pressure to be 30-100 bar.
10. An article of low internal stress polycarbonate material obtained by forming the low internal stress polycarbonate material of any of claims 1-8 or by the method of claim 9.
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