CN119570163A - High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof - Google Patents
High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof Download PDFInfo
- Publication number
- CN119570163A CN119570163A CN202411752531.6A CN202411752531A CN119570163A CN 119570163 A CN119570163 A CN 119570163A CN 202411752531 A CN202411752531 A CN 202411752531A CN 119570163 A CN119570163 A CN 119570163A
- Authority
- CN
- China
- Prior art keywords
- molecular weight
- high molecular
- based elastomer
- propylene
- weight propylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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 relates to a polypropylene material and a preparation method thereof, and discloses a high molecular weight propylene-based elastomer toughened polypropylene blend composite material and a preparation method thereof; the polypropylene is prepared from propylene monomer and one or more of comonomers (1-butene, styrene, 1-hexene, 1-octene, 1-decene and the like) through a quinoline amino binuclear metal hafnium catalyst and a cocatalyst (one or more of trifluorophenyl boron, triphenylcarbonium tetra (pentafluorophenyl) borate, aluminoxane, alkyl aluminum chloride and the like), and the polypropylene blend composite material has the advantages of improving the PP toughness, maintaining excellent strength and rigidity, and continuously endowing the PP with excellent low-temperature toughness, and particularly has obviously improved toughness at normal temperature (25 ℃) and low-temperature (-25 ℃) after toughening modification, and has small change of tensile strength. Therefore, the invention has original innovation and provides a new direction for the development of the polyolefin material field.
Description
Technical Field
The invention relates to a polypropylene material and a preparation method thereof, in particular to a high molecular weight propylene-based elastomer toughened polypropylene blend composite material and a preparation method thereof.
Background
Polypropylene (PP) is widely used in the fields of automobile industry, home appliances, electronic products, building materials, packaging, etc., because it is inexpensive, non-toxic, easy to process, and excellent in comprehensive mechanical properties. In recent decades, the apparent consumption of PP in China has increased to 10%, and PP has become the second largest consumption synthetic resin next to polyethylene. The vigorous market demand has driven a rapid increase in PP capacity and production, which is currently third after polyethylene and polyvinyl chloride. With the rapid development of technology, the requirements on the performance of PP materials are also continuously improved. Since the advent of PP, the improvement of performance has been a key area of interest to researchers. Currently, PP modification is mainly focused on the directions of high strength, high toughness, high transparency, low density, foaming, flame retardance, and the like. Particularly, under the push of the trend of automobile weight reduction, plastic steel is gradually becoming a target of automobile manufacturing industry, however, PP has the defects of poor toughness, particularly low-temperature toughness, low notch impact strength and the like. Therefore, the demand of high-toughness PP is increasingly urgent, and the toughening modification of the PP becomes an important way for realizing the high performance of the PP and plays a key role in expanding the application field of the PP.
Rubber or thermoplastic elastomer toughening modification is considered to be the most effective method for PP toughening modification, and common PP toughening elastomers include ethylene propylene rubber (EPDM), ethylene-octene copolymers (POE, OBC), styrene elastomers (SBS, SEBS) and the like. Although blending with an elastomer greatly improves the impact resistance of PP, the intrinsic strength of the elastomer is low, the toughness is improved while the strength and the rigidity are inevitably reduced, and the reduction of the strength and the rigidity tends to have a positive correlation trend with the usage amount of the elastomer. Therefore, the amount of elastomer should be reduced as much as possible while improving the toughness of PP, thereby reducing its adverse effects on the strength and stiffness of PP. This places higher demands on the toughening efficiency of the elastomer.
The high molecular weight random polypropylene (HMW-aPP) elastomer has a molecular structure more similar to that of PP, so that the high molecular weight random polypropylene (HMW-aPP) elastomer is expected to be used as a high-efficiency toughening modifier of PP. For example, byung-Kook et al, which uses a high molecular weight atactic polypropylene (HMW-aPP) having a molecular weight of about 30X 10 4 g/mol as a toughening modifying polymer for PP, have found that when the content of HMW-aPP is 20wt%, the notched impact strength of PP/HMW-aPP is increased by 385% (Macromolecular Research 2015,23 (9), 809-813) as compared to pure PP. When the POE content is about 20wt%, the notch impact strength of PP/HMW-aPP is not significantly increased compared with that of pure PP (university of Withane engineering, shuoshi paper, 2013). Although the use of HMW-aPP can improve the toughening efficiency of PP to some extent, the contribution to the low temperature toughness of PP is often very limited due to the high glass transition temperature (usually ≡10 ℃) of pure HMW-aPP, and in addition Byung-Kook et al have found that the strength and rigidity of PP/HMW-aPP are significantly lost. For example, when the HMW-aPP content is 20wt%, the tensile yield of the PP/HMW-aPP is reduced by 37% as compared to the pure PP. Therefore, there is a need to further improve the toughening efficiency of PP, and theoretically, higher molecular weight HMW-aPP has higher toughening efficiency of PP, but reports on this are almost blank.
Therefore, the high molecular weight propylene-based elastomer toughened polypropylene blend composite material and the preparation method thereof are provided, so that the PP toughness is improved, the excellent strength and rigidity are maintained, the excellent low-temperature toughness is continuously endowed, and the PP toughness is very helpful for expanding the application prospect of the PP.
Disclosure of Invention
< Technical problem to be solved by the invention >
The method is used for solving the problems that (1) the glass transition temperature (usually more than or equal to-10 ℃) of pure HMW-aPP is too high, and the low-temperature toughness of the PP is difficult to improve, (2) the toughness of the PP is improved, and meanwhile, obvious strength and rigidity loss are brought to the existing HMW-aPP, namely the toughening efficiency of the existing HMW-aPP still needs to be further improved, and (3) in theory, the HMW-aPP with higher molecular weight has higher toughening efficiency on the PP, but related reports are almost blank.
< Technical scheme adopted by the invention >
Aiming at the technical problems, the invention aims to provide a high molecular weight propylene-based elastomer toughened polypropylene blend composite material and a preparation method thereof.
The specific contents are as follows:
firstly, the invention provides a high molecular weight propylene-based elastomer toughened polypropylene blend composite material, wherein the main toughening component is a high molecular weight propylene-based elastomer, and after toughening modification, the normal temperature (25 ℃) toughness and the low temperature (-25 ℃) toughness of the polypropylene blend composite material are obviously improved;
The high molecular weight propenyl elastomer is prepared from a propylene monomer and a comonomer thereof (one or more of 1-butene, styrene, 1-hexene, 1-octene, 1-decene and the like) through a quinoline amino binuclear metal hafnium catalyst and a cocatalyst (one or more of trifluorophenyl boron, triphenylcarbonium tetra (pentafluorophenyl) borate, aluminoxane, aluminum alkyl chloride and the like);
The structure of the quinoline amino binuclear metal hafnium catalyst is shown as a formula (I):
Secondly, the molecular weight of the high molecular weight propylene-based elastomer ranges from 50 to 500 multiplied by 10 4 g/mol, the isotacticity (measured as the percentage of the isotactic sequence pentads [ mmmm ] of propylene units in a propylene molecular chain) ranges from 5 to 50mmmm, and the glass transition temperature ranges from-50 ℃ to 0 ℃.
Third, in the preparation method, the high molecular weight propylene-based elastomer toughened polypropylene blend composite material mainly comprises, by mass, 100 parts of polypropylene, 2-40 parts of high molecular weight propylene-based elastomer, 0-10 parts of disentanglement agent, and 0-10 parts of other auxiliary agents (antioxidants, light stabilizers and the like);
Fourth, in the above preparation method, in order to coordinate the contradiction between the processing viscosity of the high molecular weight propylene-based elastomer and the toughening efficiency thereof, the disentanglement agent is one or more of white oil, stearic acid, PE wax and the like;
fifth, in the preparation method, in order to improve the processing and use stability of the high molecular weight propylene-based elastomer toughened polypropylene blend composite material, the other auxiliary agents are antioxidants, light stabilizers and the like.
Sixth, in the preparation method, the material is prepared according to the following steps:
weighing polypropylene, a high molecular weight propylene-based elastomer, an disentanglement agent and other auxiliary agents according to parts by weight, and mixing for 3-5 minutes in a mixer;
and secondly, granulating by using an extruder, wherein the temperature setting range is 170-250 ℃, and the screw rotating speed setting range is 100-500rpm.
Drawings
FIG. 1 is a DSC graph of a homo-polypropylene-based elastomer having a molecular weight range of 8X 10 5 g/mol and an isotacticity of 8.2 mmmm%.
FIG. 2 is a DSC graph of a propylene-1-octene copolymer elastomer having a molecular weight range of 12X 10 5 g/mol.
FIG. 3 is a DSC graph of a homopolypropylene-based elastomer having a molecular weight range of 4X 10 5 g/mol and an isotacticity of 15.4 mmmm%.
FIG. 4 is a GPC chart of a homopolypropylene-based elastomer having a molecular weight range of 8X 10 5 g/mol and an isotacticity of 8.2 mmmm%.
FIG. 5 is a GPC chart of propylene-1-octene copolymer elastomer having a molecular weight range of 12X 10 5 g/mol.
FIG. 6 is a GPC chart of a homopolypropylene-based elastomer having a molecular weight range of 4X 10 5 g/mol and an isotacticity of 15.4 mmmm%.
FIG. 7 is a nuclear magnetic resonance spectrum of a homo-polypropylene-based elastomer having a molecular weight range of 8X 10 5 g/mol and an isotacticity of 8.2 mmmm%.
FIG. 8 is a nuclear magnetic resonance spectrum of a homo-polypropylene-based elastomer having a molecular weight range of 4X 10 5 g/mol and an isotacticity of 15.4 mmmm%.
Detailed Description
The invention is further illustrated by means of examples, but the invention is not limited thereto. Embodiments of the present invention may enable those skilled in the art to more fully understand the present invention.
The experimental methods used in the following examples are conventional methods unless otherwise specified.
The invention is described below in the specific examples.
< Example >
Example 1
(1) Weighing 100 parts of polypropylene, 20 parts of high molecular weight propylene-based elastomer, 5 parts of white oil and 1 part of antioxidant according to the parts by weight, wherein the molecular weight of the polypropylene, the high molecular weight polypropylene-based elastomer (the molecular weight is 8 multiplied by 10 5 g/mol; the isotacticity is 8.2 mmmm; the glass transition temperature is-9 ℃);
(2) Mixing the mixture in a mixer for 3-5 minutes;
(3) Pelletization was carried out by an extruder (CTE 20, keplon mechanical Co., ltd.) with a screw and a die set at a temperature of 170 to 250℃and a screw rotation speed of 200rpm.
(4) Samples were prepared using an injection molding machine (Jiangsu Tianyuan test equipment Co., ltd., TY-7003H) at three injection temperatures of 210℃and 235℃and 220℃respectively, and at a mold temperature of 40 ℃.
Example 2
(1) 100 Parts of polypropylene, 20 parts of high molecular weight propylene-1-octene copolymer elastomer (the molecular weight is 12 multiplied by 10 5 g/mol, the glass transition temperature is-16 ℃), 5 parts of white oil and 1 part of antioxidant in parts by weight;
(2) Mixing the above mixture in a mixer for 3-5 minutes;
(3) Pelletization was carried out by an extruder (CTE 20, keplon mechanical Co., ltd.) with a screw and a die set at a temperature of 170 to 250℃and a screw rotation speed of 200rpm.
(4) Samples were prepared using an injection molding machine (Jiangsu Tianyuan test equipment Co., ltd., TY-7003H) at three injection temperatures of 210℃and 235℃and 220℃respectively, and at a mold temperature of 40 ℃.
Example 3
(1) The method comprises the steps of weighing 100 parts of polypropylene, 20 parts of high-molecular-weight propylene-based elastomer, 5 parts of white oil and 1 part of antioxidant in parts by weight;
(2) Mixing the above mixture in a mixer for 3-5 minutes;
(3) Pelletization was carried out by an extruder (CTE 20, keplon mechanical Co., ltd.) with a screw and a die set at a temperature of 170 to 250℃and a screw rotation speed of 200rpm.
(4) Samples were prepared using an injection molding machine (Jiangsu Tianyuan test equipment Co., ltd., TY-7003H) at three injection temperatures of 210℃and 235℃and 220℃respectively, and at a mold temperature of 40 ℃.
Comparative example
Comparative example 1
(1) Weighing 100 parts of polypropylene, 20 parts of high molecular weight propylene-based elastomer, 0 part of white oil and 1 part of antioxidant according to the parts by weight, wherein the molecular weight of the polypropylene, the high molecular weight polypropylene-based elastomer (the molecular weight is 4 multiplied by 10 5 g/mol; the isotacticity is 15.4 mmmm; the glass transition temperature is-8 ℃);
(2) Mixing the above mixture in a mixer for 3-5 minutes;
(3) Pelletization was carried out by an extruder (CTE 20, keplon mechanical Co., ltd.) with a screw and a die set at a temperature of 170 to 250℃and a screw rotation speed of 200rpm.
(4) Samples were prepared using an injection molding machine (Jiangsu Tianyuan test equipment Co., ltd., TY-7003H) at three injection temperatures of 210℃and 235℃and 220℃respectively, and at a mold temperature of 40 ℃.
Comparative example 2
(1) Weighing 100 parts of polypropylene and 1 part of antioxidant in parts by weight;
(2) Mixing the above mixture in a mixer for 3-5 minutes;
(3) Pelletization was carried out by an extruder (CTE 20, keplon mechanical Co., ltd.) with a screw and a die set at a temperature of 170 to 250℃and a screw rotation speed of 200rpm.
(4) Samples were prepared using an injection molding machine (Jiangsu Tianyuan test equipment Co., ltd., TY-7003H) at three injection temperatures of 210℃and 235℃and 220℃respectively, and at a mold temperature of 40 ℃.
< Test example >
The samples prepared in example 1 (E1) and comparative examples 1-2 (C1-C2) were tested for notched impact (GB/T1843-2008) and tensile properties (GB/T1040.1-2006), and the results are shown in Table 1-1.
Table 1-1E1 comparison with the results of the Performance test of C1, C2
As is clear from Table 1-1, the notched impact strength at room temperature (25 ℃) of the high molecular weight, homopolypropylene-based elastomer-modified PP (C1) of 4X 10 5 g/mol increased from 3.6kJ/m 2 to 16.2kJ/m 2 by 350.0%, the increase was more pronounced, the notched impact strength at low temperature (-25 ℃) increased from 1.1kJ/m 2 to 1.5kJ/m 2, the change was insignificant, and the tensile strength was reduced from 33.7MPa to 26.1MPa by 29.1%.
The normal temperature (25 ℃) notch impact strength and the low temperature (-25 ℃) notch impact strength of the 8X 10 5 g/mol high molecular weight polypropylene-based elastomer modified PP (E1) are respectively increased to 18.9kJ/m 2 and 1.7kJ/m 2, which are respectively increased by 16.7 percent and 13.3 percent compared with C1, the low temperature (-25 ℃) notch impact strength is not obvious, the tensile strength is reduced to 27.4MPa, which is reduced by 23.0 percent compared with C1.
The samples prepared in example 2 (E2) and comparative examples 1-2 (C1-C2) were tested for notched impact (GB/T1843-2008) and tensile properties (GB/T1040.1-2006), and the results are shown in tables 1-2.
Table 1-2E2 comparison with the results of the Performance test of C1, C2
As is clear from tables 1 to 2, the notched impact strength at ordinary temperature (25 ℃) and the notched impact strength at low temperature (-25 ℃) of the 12X 10 5 g/mol propylene-1-octene copolymer elastomer modified PP (E2) were increased to 19.1kJ/m 2 and 4.5kJ/m 2, respectively, by 17.9% and 200.0% as compared with C1, the notched impact strength at low temperature (-25 ℃) was increased significantly, the tensile strength was increased to 28.4MPa, and 8.8% as compared with C1.
The samples prepared in example 3 (E3) and comparative examples 1-2 (C1-C2) were tested for notched impact (GB/T1843-2008) and tensile properties (GB/T1040.1-2006), and the results are shown in tables 1-3.
Tables 1-3E3 comparison with the results of the Performance test of C1, C2
As is clear from tables 1 to 3, the notched impact strength at ordinary temperature (25 ℃) and the notched impact strength at low temperature (-25 ℃) of the 11X 10 5 g/mol high-molecular weight homo-polypropylene-based elastomer (high-regularity) modified PP (E3) were changed to 15.4kJ/m 2 and 1.6kJ/m 2, respectively, and the tensile strength was increased to 31.5MPa.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A high molecular weight propenyl elastomer toughened polypropylene blend composite material is characterized in that the toughening component of polypropylene is a high molecular weight propenyl elastomer, the toughness of the polypropylene blend composite material at normal temperature (25 ℃) and the toughness at low temperature (-25 ℃) are obviously improved after toughening modification, and the high molecular weight propenyl elastomer is prepared from propylene monomer and comonomer (one or more of 1-butene, styrene, 1-hexene, 1-octene, 1-decene and the like) through quinoline amino binuclear metal hafnium catalyst and cocatalyst (one or more of trifluorophenyl boron, triphenylcarbonium tetra (pentafluorophenyl) borate, aluminoxane, alkyl aluminum chloride and the like).
2. The high molecular weight propylene-based elastomer toughened polypropylene blend composite as claimed in claim 1, wherein the high molecular weight propylene-based elastomer has a molecular weight in the range of 50 to 500 x 10 4 g/mol.
3. The high molecular weight propylene-based elastomer toughened polypropylene blend composite of claim 1, wherein the high molecular weight propylene-based elastomer has an isotacticity (in terms of the percentage of isotactic sequence pentads [ mmmm ] of propylene units in the propylene molecular chain) in the range of 5 to 50 mmmm.
4. The high molecular weight propylene-based elastomer toughened polypropylene blend composite of claim 1, wherein the high molecular weight propylene-based elastomer has a glass transition temperature in the range of-50 to 0 ℃.
5. The high molecular weight propylene-based elastomer toughened polypropylene blend composite material according to claim 1, which is characterized by comprising, by mass, 100 parts of polypropylene, 2-40 parts of a high molecular weight propylene-based elastomer, 0-10 parts of an disentanglement agent and 0-10 parts of other auxiliary agents (antioxidants, light stabilizers and the like).
6. The high molecular weight propylene-based elastomer toughened polypropylene blend composite as claimed in claim 5 wherein said disentangling agent is one or more of white oil, stearic acid, PE wax and the like.
7. The high molecular weight propylene-based elastomer toughened polypropylene blend composite as claimed in claim 5, wherein said other auxiliary agents are antioxidants, light stabilizers and the like.
8. The high molecular weight propylene-based elastomer toughened polypropylene blend composite material according to any one of claims 1 to 7, wherein the material is prepared by weighing polypropylene, the high molecular weight propylene-based elastomer, an disentanglement agent and other auxiliary agents in parts by mass, mixing in a mixer for 3 to 5 minutes, and granulating by an extruder at a temperature set in a range of 170 to 250 ℃ and a screw speed set in a range of 100 to 500rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411752531.6A CN119570163A (en) | 2024-12-02 | 2024-12-02 | High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411752531.6A CN119570163A (en) | 2024-12-02 | 2024-12-02 | High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119570163A true CN119570163A (en) | 2025-03-07 |
Family
ID=94797857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411752531.6A Pending CN119570163A (en) | 2024-12-02 | 2024-12-02 | High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119570163A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942516A (en) * | 2004-04-19 | 2007-04-04 | 三井化学株式会社 | Alpha-olefin polymer composition, molded article made of the composition, and novel polymer |
| US20070155905A1 (en) * | 2006-01-03 | 2007-07-05 | Marta Drewniak | Polyolefin material with enhanced surface durability |
| CN101928296A (en) * | 2010-07-07 | 2010-12-29 | 中国科学院化学研究所 | A 2-(nitrogen-containing heterocycle) benzimidazole complexed alkylaluminum compound and its preparation method and application |
| KR20120010030A (en) * | 2010-07-23 | 2012-02-02 | 금호폴리켐 주식회사 | Dinuclear metallocene catalyst for producing ethylene-propylene and ethylene-propylene-diene copolymers and polymerization method using the same |
| CN106479037A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of method of polypropylene toughening |
| CN107868343A (en) * | 2017-11-21 | 2018-04-03 | 天津金发新材料有限公司 | It is a kind of it is low turn white, low temperature toughness reinforcing, modified clear acrylic |
| CN111704767A (en) * | 2019-03-18 | 2020-09-25 | 广州市香港科大霍英东研究院 | A kind of high rigidity and high toughness polypropylene composite material and preparation method thereof |
| US20230097049A1 (en) * | 2019-12-13 | 2023-03-30 | Exxonmobil Chemical Patents Inc, | Propylene-Based Elastomer Compositions, Articles Thereof, and Methods Thereof |
| CN118027567A (en) * | 2024-01-02 | 2024-05-14 | 金旸（厦门）新材料科技有限公司 | High-transparency low-shrinkage polypropylene material for vehicle bumper and preparation method thereof |
-
2024
- 2024-12-02 CN CN202411752531.6A patent/CN119570163A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942516A (en) * | 2004-04-19 | 2007-04-04 | 三井化学株式会社 | Alpha-olefin polymer composition, molded article made of the composition, and novel polymer |
| US20070155905A1 (en) * | 2006-01-03 | 2007-07-05 | Marta Drewniak | Polyolefin material with enhanced surface durability |
| CN101928296A (en) * | 2010-07-07 | 2010-12-29 | 中国科学院化学研究所 | A 2-(nitrogen-containing heterocycle) benzimidazole complexed alkylaluminum compound and its preparation method and application |
| KR20120010030A (en) * | 2010-07-23 | 2012-02-02 | 금호폴리켐 주식회사 | Dinuclear metallocene catalyst for producing ethylene-propylene and ethylene-propylene-diene copolymers and polymerization method using the same |
| CN106479037A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of method of polypropylene toughening |
| CN107868343A (en) * | 2017-11-21 | 2018-04-03 | 天津金发新材料有限公司 | It is a kind of it is low turn white, low temperature toughness reinforcing, modified clear acrylic |
| CN111704767A (en) * | 2019-03-18 | 2020-09-25 | 广州市香港科大霍英东研究院 | A kind of high rigidity and high toughness polypropylene composite material and preparation method thereof |
| US20230097049A1 (en) * | 2019-12-13 | 2023-03-30 | Exxonmobil Chemical Patents Inc, | Propylene-Based Elastomer Compositions, Articles Thereof, and Methods Thereof |
| CN118027567A (en) * | 2024-01-02 | 2024-05-14 | 金旸（厦门）新材料科技有限公司 | High-transparency low-shrinkage polypropylene material for vehicle bumper and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| XINGWANG ZHANG ET AL.: "Synthesis of Amido-quinoline Hafnium and Zirconium Complexes with Improved Performances toward Ethylene/1-Octene Copolymerization", ORGANOMETALLICS, vol. 43, 20 March 2024 (2024-03-20) * |
| 彭志宏;唐昌伟;张旭文;: "丙烯基弹性体对聚丙烯增韧改性的研究", 合成材料老化与应用, no. 05, 30 October 2015 (2015-10-30) * |
| 邢艳红: "基于蒽骨架双金属NO配位过渡金属催化剂的合成及其烯烃聚合的研究", 中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑, 15 February 2022 (2022-02-15) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101429309B (en) | A kind of impact-resistant polypropylene composition and its manufacturing method | |
| CN113912941B (en) | Polypropylene composite material and preparation method and application thereof | |
| EP0792914B1 (en) | Polyolefin composition and article molded therefrom | |
| KR20120127466A (en) | Propylene homopolymer having high melt strength and preparation method thereof | |
| CN102492225B (en) | Transparent cold resistance high melt-strength polypropylene material used for automobile expansion water tank and its preparation method | |
| CN110862618A (en) | Ultra-low-warpage high-strength long glass fiber reinforced polypropylene composite material and preparation method thereof | |
| CN109777025A (en) | A kind of high rigidity, high tenacity, low-shrink polypropylene composite material and preparation method | |
| CN106009252A (en) | High-toughness high cold-resistant transparent polypropylene material and preparation method thereof | |
| JP5954931B2 (en) | Polypropylene resin composition based on ethylene-propylene block copolymer with excellent impact strength, surface properties and fluidity | |
| CN108727687B (en) | Propylene resin composition and injection molded article | |
| WO2024032433A1 (en) | Low post-shrinkage polypropylene material and preparation method therefor | |
| JP2013241589A (en) | Polyolefin resin composition and molded article containing the same | |
| JP2012229303A (en) | Propylenic resin composition, and injection molding thereof | |
| JPWO2017213125A1 (en) | Propylene-based resin composition and injection molded body thereof | |
| CN102796320A (en) | Low-temperature impact-resisting polypropylene composition, its preparation method and application | |
| CN119570163A (en) | High molecular weight propylene-based elastomer toughened polypropylene blend composite material and preparation method thereof | |
| CN110964242B (en) | Low-shrinkage polyolefin composition and preparation method and application thereof | |
| KR102457624B1 (en) | Ethylene-propylene copolymer resin composition having excellent mechanical properties and dimensional stability, method of manufacturing the same, and molded article manufactured thereby | |
| CN114507396A (en) | Polypropylene composition, preparation method and application | |
| JPH07247387A (en) | Syndiotactic polypropylene resin composition | |
| CN114539678A (en) | Energy-saving regenerated polypropylene composite material and preparation method thereof | |
| KR102427613B1 (en) | Polypropylene resin composition for 3D printer having isotropic shrinkage and high impact properties, manufacturing method of the same, and molded articles manufactured thereby | |
| KR101842787B1 (en) | Polypropylene resin composition for blow molded article integrated with handle and preparing method same | |
| JP2020084176A (en) | Polypropylene resin composition having excellent whitening resistance, method for preparing the same, and molded article produced thereby | |
| CN112321950B (en) | High-impact polypropylene material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |