CN118563502B - Flash evaporation medical protective material with better microbial barrier function and processing method thereof - Google Patents
Flash evaporation medical protective material with better microbial barrier function and processing method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 148
- 230000001681 protective effect Effects 0.000 title claims abstract description 95
- 230000004888 barrier function Effects 0.000 title claims abstract description 49
- 230000000813 microbial effect Effects 0.000 title claims abstract description 46
- 238000001704 evaporation Methods 0.000 title claims description 127
- 230000008020 evaporation Effects 0.000 title claims description 115
- 238000003672 processing method Methods 0.000 title abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 33
- 239000004698 Polyethylene Substances 0.000 claims abstract description 32
- 229920000573 polyethylene Polymers 0.000 claims abstract description 32
- 230000035699 permeability Effects 0.000 claims abstract description 21
- 230000032683 aging Effects 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 5
- 230000014759 maintenance of location Effects 0.000 claims abstract description 3
- 238000009987 spinning Methods 0.000 claims description 64
- 239000012752 auxiliary agent Substances 0.000 claims description 44
- 229910018084 Al-Fe Inorganic materials 0.000 claims description 21
- 229910018192 Al—Fe Inorganic materials 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 18
- 239000002135 nanosheet Substances 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 239000002985 plastic film Substances 0.000 claims description 4
- 230000002906 microbiologic effect Effects 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 35
- KFUSEUYYWQURPO-UPHRSURJSA-N cis-1,2-dichloroethene Chemical group Cl\C=C/Cl KFUSEUYYWQURPO-UPHRSURJSA-N 0.000 description 14
- 229960004624 perflexane Drugs 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 8
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 7
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 7
- 239000004744 fabric Substances 0.000 description 7
- 238000011056 performance test Methods 0.000 description 7
- 238000000227 grinding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000004751 flashspun nonwoven Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002055 nanoplate Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
本发明涉及一种具有较佳微生物屏障功能的闪蒸医用防护材料及其加工方法，其特征在于，闪蒸医用防护材料的原料包含聚乙烯；闪蒸医用防护材料的克重大于33g/m2；闪蒸医用防护材料的松散度为2～5cm3/g；松散度=厚度/克重；闪蒸医用防护材料的穿刺强度为0.10kN/mm～0.30kN/mm；闪蒸医用防护材料的透湿指数为8%～25%；闪蒸医用防护材料，加速老化5年后的Log降低值LRV大于4.0，芽孢截留率大于99.99%；本申请的闪蒸医用防护材料具有较佳的总和性能。The present invention relates to a flash-steamed medical protective material with better microbial barrier function and a processing method thereof, characterized in that the raw material of the flash-steamed medical protective material comprises polyethylene; the gram weight of the flash-steamed medical protective material is greater than 33g/ m2 ; the bulkiness of the flash-steamed medical protective material is 2-5cm3 /g; bulkiness=thickness/gram weight; the puncture strength of the flash-steamed medical protective material is 0.10kN/mm-0.30kN/mm; the moisture permeability index of the flash-steamed medical protective material is 8%-25%; the flash-steamed medical protective material, the Log reduction value LRV after accelerated aging for 5 years is greater than 4.0, and the spore retention rate is greater than 99.99%; the flash-steamed medical protective material of the present application has better overall performance.
Description
Technical Field
The invention relates to the technical field of textile production, in particular to a flash evaporation medical protective material with a better microbial barrier function and a processing method thereof.
Background
Flash evaporation (Spunsteaming) is a nonwoven technology used to produce nonwoven materials, particularly those medical protective materials having specific performance requirements. The flash evaporation method quickly solidifies the polymer solution or melt into filaments through high-speed airflow to form a fiber network with a unique structure, and the fibers have high uniformity, strength and controllable pore size distribution, so that the method is particularly suitable for the field of medical protection. The non-woven fabric produced by flash evaporation process is characterized by fine fiber, uniform pore diameter and high strength, and is suitable for medical protective clothing, mask, operating gown and the like. Medical protective clothing provides a blood, body fluid and microorganism barrier for medical staff, and reduces the risk of cross infection. The surgical mask and the N95 mask can block particles in the air and protect respiratory tract. The operation curtain and the bed sheet are isolated from the operation area, thus preventing pollution. Medical packaging material, medical apparatus and medicine package, and is maintained in aseptic state.
Chinese patent CN116623367 relates to a flash evaporation material with low haze attenuation rate, which is characterized in that the raw material of the flash evaporation material comprises polyethylene, the gram weight of flash-spun non-woven fabric is greater than 35g/m 2, the compression ratio work P of the flash evaporation material is greater than 0.07gf cm/cm 2, the compression ratio work is tested by a KES style tester, the compression ratio work is tested by FB3, the haze attenuation rate DeltaW is 0.3% -1.5%, deltaW= (W0-W5)/W0 x 100%, the attenuation rate DeltaS of the heat shielding rate of the flash evaporation material is 7% -15%, deltaS= (S0-S5)/S0 x 100%. The application utilizes the modification of spinning raw materials to improve the performance of flash evaporation materials and expand the application thereof.
The Chinese patent CN114687069 relates to a multifunctional polymer non-woven fabric and a fabric thereof, and is characterized in that the attenuation rate of the breaking elongation is 0.20-0.50, wherein the attenuation rate is (I) and (II) is (II) 1-E2/E1, E1 is the breaking elongation of the multifunctional polymer non-woven fabric which is not subjected to aging test treatment, E2 is the breaking elongation of the multifunctional polymer non-woven fabric which is subjected to aging test treatment, and the numerical value of E2 is less than 0.5. The application has simple process and wide application.
Chinese patent CN116590847 relates to a flash evaporation cloth with high tensile recovery performance, which is characterized in that the raw material comprises polyethylene, the gram weight G of the flash evaporation cloth is more than 35G/m < 2 >, the tensile recovery performance RT of the flash evaporation cloth is 40% -70%, the ageing toughness Z5 of the flash evaporation cloth is 5-15 (N.m)/G, wherein Z5= [ RM5 XEM 5+RT5 XET 5]/G, and the comprehensive performance of a product is improved through spinning raw materials and process improvement.
Chinese patent CN117926503 relates to the field of flash spinning technology, in particular to a high-flexibility flash sheet. Aiming at the problem that related researches on modification of the flexibility and heat shielding rate of flash-evaporated textiles are not found in the prior art, the invention provides a high-flexibility flash-evaporated sheet, which comprises polyethylene, wherein the flexibility of the high-flexibility flash-evaporated sheet is 1.8-4.0N 2, and the heat shielding rate of the high-flexibility flash-evaporated sheet is 10-40%. The invention provides a flash evaporation sheet, which has higher flexibility on the basis of ensuring the heat shielding rate within a proper range, and meets the related market demands.
However, the flash evaporation material is not reported in the literature. However, this property is an essential property parameter of the flash evaporation medical protective material, and especially, poor puncture property leads to failure of the purpose of medical protection, and poor microbial barrier leads to failure of the material as a medical protective material. The degree of looseness is an index of the physical properties of the product, and the product has good hand feeling when the product has certain degree of looseness. The application comprehensively considers the performance parameters and searches a flash evaporation medical protective material with a better comprehensive range.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a flash evaporation medical protective material with a better microbial barrier function.
The aim of the invention is realized by the following technical scheme:
a flash vaporization medical protective material with better microbial barrier function, the raw material of the flash vaporization medical protective material comprises polyethylene;
The looseness of the flash evaporation medical protective material is 2-5 cm 3/g;
bulk = thickness/gram weight;
the moisture permeability index of the flash evaporation medical protective material is 8% -25%;
The puncture strength of the flash evaporation medical protective material is 0.10 kN/mm-0.30 kN/mm;
Flash evaporating the medical protective material, wherein the Log reduction value LRV after accelerated aging for 5 years is greater than 4.0, and the spore retention rate is greater than 99.99%;
The test standard of the moisture permeability index is the measurement of thermal resistance and wet resistance under the physiological comfort steady-state condition of the GB/T11048-2018 textile (evaporation hot plate method).
Puncture strength test standard GB/T37841-2019 plastic film and sheet puncture resistance test method, wherein the puncture speed is 50mm/min, the sample fixing inner diameter is (50.0+/-0.5) mm, and the test is carried out by Shanghai national institute of quality supervision technology, and report number W02407130251.
The microbiological barrier test standard is ASTM F1608-16, report number SDWH-M202206177-3Amd01 by Suzhou Suda health and environmental technology research, inc.
The looseness of the flash evaporation medical protective material is 2-2.5 cm 3/g.
The looseness of the flash evaporation medical protective material is 2.5-3 cm 3/g.
The looseness of the flash evaporation medical protective material is 3-3.5 cm 3/g.
The looseness of the flash evaporation medical protective material is 3.5-4 cm 3/g.
The looseness of the flash evaporation medical protective material is 4-4.5 cm 3/g.
The looseness of the flash evaporation medical protective material is 4.5-5 cm 3/g.
The puncture strength of the flash evaporation medical protective material is 0.10 kN/mm-0.13 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.13 kN/mm-0.15 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.15 kN/mm-0.17 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.17 kN/mm-0.19 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.19 kN/mm-0.21 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.21 kN/mm-0.23 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.23 kN/mm-0.25 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.25 kN/mm-0.27 kN/mm.
The puncture strength of the flash evaporation medical protective material is 0.27 kN/mm-0.29 kN/mm.
The moisture permeability index of the flash evaporation medical protective material is 8% -10%.
The moisture permeability index of the flash evaporation medical protective material is 10% -12%.
The moisture permeability index of the flash evaporation medical protective material is 12% -14%.
The moisture permeability index of the flash evaporation medical protective material is 14% -16%.
The moisture permeability index of the flash evaporation medical protective material is 16% -20%.
The moisture permeability index of the flash evaporation medical protective material is 20% -22%.
The moisture permeability index of the flash evaporation medical protective material is 22% -24%.
The moisture permeability index of the flash evaporation medical protective material is 24% -25%.
Flash evaporating the medical protective material, wherein the Log reduction value LRV after accelerated aging for 5 years is more than 4.5.
The gram weight of the flash evaporation medical protective material is less than 130g/m 2.
The gram weight of the flash evaporation medical protective material is less than 120g/m 2.
The gram weight of the flash evaporation medical protective material is less than 110g/m 2.
The gram weight of the flash evaporation medical protective material is less than 100g/m 2.
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers, wherein the mass ratio of the ultrathin Al-Fe 3O4 nano sheet to the Nb 2O5 micrometer flowers is 1:3-1:6, and the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers are ground to obtain the functional auxiliary agent.
The mass fraction of the functional auxiliary agent in the mixture of the polyethylene and the functional auxiliary agent is 2-3%.
The mass fraction of the polyethylene in the flash spinning solution is 9-14%.
The spinning solvent is selected from aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, unsaturated hydrocarbons, halogenated hydrocarbons, alcohols, esters, ethers, ketones, nitriles, amides, fluorocarbons, sulfur dioxide, carbon disulfide, nitromethane, water, and mixtures of two or more of the foregoing.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The Nb 2O5 micrometer flower of the functional auxiliary agent has a micrometer-scale structure with rich pores and high specific surface area, is used as a carrier, and meanwhile, the ultrathin Al-Fe 3O4 nanometer sheet and the Nb 2O5 micrometer flower are compounded to play a role of buffering and continuously playing the role of the ultrathin Al-Fe 3O4 nanometer sheet. Ultrathin Al-Fe 3O4 nanoplates have a very large specific surface area, which means that they can form a large number of contact points or interfaces when distributed in the fiber, which can effectively disperse stresses, prevent crack propagation, and thus enhance the overall properties of the fiber and the final fabric. The ultrathin Al-Fe 3O4 nano sheet has higher rigidity, can be used as a reinforcing material, and can improve the rigidity of a composite material, so that the flash evaporation fiber is not easy to deform when bearing load, and the puncture resistance of the material is improved. The ultrathin Al-Fe 3O4 nano sheet can more uniformly transfer stress in the flash evaporation fiber, reduce local stress concentration, ensure that the flash evaporation fiber is not easy to break under the load of uniform distribution, and improve the overall comprehensive performance.
Compared with the prior art, the invention has the following positive effects:
The application can obviously improve the comprehensive performance of the product by adding the functional auxiliary agent.
Detailed Description
The following provides a specific embodiment of a flash vaporization medical protective material with a preferred microbial barrier function according to the present invention.
Example 1
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of polyethylene and functional auxiliary agent is 2%.
The mass fraction of polyethylene in the flash spinning solution was 9%.
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers in a mass ratio of 1:3, and grinding the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers to obtain the functional auxiliary agent.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-evaporated medical protective material of example 1 is shown in table 1.
Example 2
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of polyethylene and functional auxiliary agent is 2.5%.
The mass fraction of polyethylene in the flash spinning solution is 10%.
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers in a mass ratio of 1:4, and grinding the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers to obtain the functional auxiliary agent.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-evaporated medical protective material of example 2 is shown in table 1.
Example 3
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of polyethylene and functional auxiliary agent is 3%.
The mass fraction of polyethylene in the flash spinning solution is 11%.
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers in a mass ratio of 1:5, and is obtained by grinding the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-evaporated medical protective material of example 3 is shown in table 1.
Comparative example 1
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of the polyethylene and the functional auxiliary agent is 0.5%.
The mass fraction of polyethylene in the flash spinning solution is 10%.
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers in a mass ratio of 1:4, and grinding the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers to obtain the functional auxiliary agent.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-distilled medical protective material of comparative example 1 are shown in table 1.
Comparative example 2
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
the mass fraction of the functional auxiliary agent in the mixture of the polyethylene and the functional auxiliary agent is 1%.
The mass fraction of polyethylene in the flash spinning solution is 10%.
The functional auxiliary agent comprises the components of an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flowers in a mass ratio of 1:4, and grinding the ultrathin Al-Fe 3O4 nano sheet and the Nb 2O5 micrometer flowers to obtain the functional auxiliary agent.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-distilled medical protective material of comparative example 2 are shown in table 1.
Comparative example 3
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of polyethylene and functional auxiliary agent is 2.5%.
The mass fraction of polyethylene in the flash spinning solution is 10%.
The functional auxiliary agent comprises ultrathin Al-Fe 3O4 nano-sheets.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data of the flash-evaporated medical protective material of comparative example 3 are shown in table 1.
Comparative example 4
The processing method of the flash evaporation medical protective material with the better microbial barrier function is characterized by comprising the following technical steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
The mass fraction of the functional auxiliary agent in the mixture of polyethylene and functional auxiliary agent is 2.5%.
The mass fraction of polyethylene in the flash spinning solution is 10%.
The functional auxiliary agent comprises Nb 2O5 micrometer flowers.
The spinning solvent is cyclohexane, methylene dichloride, cis-1, 2-dichloroethylene and 6H-perfluorohexane, and the mass ratio of the cyclohexane to the dichloromethane to the cis-1, 2-dichloroethylene to the 6H-perfluorohexane is 3:3:1.
(2) And performing flash spinning on the flash spinning solution at the spinning temperature of 200-220 ℃ to obtain flash fiber, and performing lapping and hot-pressing processes to obtain the flash medical protective material.
The performance test data for the flash-evaporated medical protective material of comparative example 4 are shown in table 1.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the concept of the present invention, and are intended to be within the scope of the present invention.
Claims (29)
1. A flash evaporation medical protective material with better microbial barrier function, which is characterized in that the raw materials of the flash evaporation medical protective material comprise polyethylene;
the gram weight of the flash evaporation medical protective material is more than 33g/m 2;
The looseness of the flash evaporation medical protective material is 2-5 cm 3/g;
bulk = thickness/gram weight;
The puncture strength of the flash evaporation medical protective material is 0.10 kN/mm-0.30 kN/mm;
the moisture permeability index of the flash evaporation medical protective material is 8% -25%;
Flash evaporating the medical protective material, wherein the Log reduction value LRV after accelerated aging for 5 years is greater than 4.0, and the spore retention rate is greater than 99.99%;
The test standard of the moisture permeability index is GB/T11048-2018;
Puncture strength test standard GB/T37841-2019 plastic film and sheet puncture resistance test method;
the microbiological barrier test standard is ASTM F1608-16;
The flash evaporation medical protective material also comprises a functional auxiliary agent;
The functional auxiliary agent comprises an ultrathin Al-Fe 3O4 nano sheet and Nb 2O5 micrometer flower, wherein the mass ratio of the ultrathin Al-Fe 3O4 nano sheet to the Nb 2O5 micrometer flower is 1:3-1:6;
The flash evaporation medical protective material with the better microbial barrier function is prepared by the following steps:
(1) Firstly, mixing a functional auxiliary agent, a spinning solvent and polyethylene in a reactor, wherein the mixing temperature is 190-200 ℃ and the pressure is 150-180 bar, and then obtaining a flash spinning solution;
(2) Secondly, carrying out flash spinning on the flash spinning solution, wherein the spinning temperature is 200-220 ℃ to obtain flash fiber, and then carrying out lapping and hot-pressing processes to obtain a flash medical protective material;
the mass fraction of the functional auxiliary agent in the mixture of the polyethylene and the functional auxiliary agent is 2-3%.
2. The flash evaporation medical protection material with a better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 2-2.5 cm 3/g.
3. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 2.5-3 cm 3/g.
4. The flash evaporation medical protection material with a better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 3-3.5 cm 3/g.
5. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 3.5-4 cm 3/g.
6. The flash evaporation medical protection material with a better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 4-4.5 cm 3/g.
7. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a looseness of 4.5-5 cm 3/g.
8. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.10-0.13 kN/mm.
9. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.13-0.15 kN/mm.
10. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.15-0.17 kN/mm.
11. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.17-0.19 kN/mm.
12. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.19-0.21 kN/mm.
13. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.21 kN/mm-0.23 kN/mm.
14. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.23-0.25 kN/mm.
15. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.25-0.27 kN/mm.
16. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the puncture strength of the flash evaporation medical protection material is 0.27-0.29 kN/mm.
17. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 8% -10%.
18. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 10% -12%.
19. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 12% -14%.
20. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 14% -16%.
21. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 16% -20%.
22. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 20% -22%.
23. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 22% -24%.
24. The flash evaporation medical protection material with better microbial barrier function according to claim 1, wherein the flash evaporation medical protection material has a moisture permeability index of 24% -25%.
25. A flash medical protective material having a preferred microbial barrier function according to claim 1, wherein the Log reduction LRV after accelerated aging for 5 years is greater than 4.5.
26. A flash-evaporating medical protective material having a preferred microbial barrier function as in claim 1, wherein the gram weight of the flash-evaporating medical protective material is less than 130g/m 2.
27. A flash-evaporating medical protective material having a preferred microbial barrier function as in claim 1, wherein the gram weight of the flash-evaporating medical protective material is less than 120g/m 2.
28. A flash-evaporating medical protective material having a preferred microbial barrier function as in claim 1, wherein the gram weight of the flash-evaporating medical protective material is less than 110g/m 2.
29. A flash-evaporating medical protective material having a preferred microbial barrier function as in claim 1, wherein the gram weight of the flash-evaporating medical protective material is less than 100g/m 2.
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| CN114990712A (en) * | 2021-03-18 | 2022-09-02 | 江苏青昀新材料科技有限公司 | Flash evaporation fabric and application thereof |
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| CN114990712A (en) * | 2021-03-18 | 2022-09-02 | 江苏青昀新材料科技有限公司 | Flash evaporation fabric and application thereof |
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