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Reinforced modified poly(propylene carbonate) composition and preparation method thereof

A technology of polypropylene carbonate and composition, applied in the field of reinforced modified polypropylene carbonate composition and preparation thereof, can solve the problems of easy occurrence of cold flow bonding, low glass transition temperature, no crystallization, etc., and achieves improved flexibility flexibility, expand application space, and good flexibility

Inactive Publication Date: 2015-03-04
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polypropylene carbonate has the above advantages, compared with general-purpose plastics, polypropylene carbonate has the characteristics of non-crystallization and low glass transition temperature (about 30°C), which leads to the fact that the material formed by the copolymer is prone to cold at high temperature. Flow bonding, brittle and hard at low temperature, and its mechanical properties such as strength and toughness are poor, which limits its application in packaging, food, medicine and other fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Weigh the following components by weight:

[0029] The number average molecular weight is 48g of polypropylene carbonate of 150000g / mol

[0030] Ethylene-vinyl acetate copolymer 12g

[0031] 3g of poly-1,2-propanediol adipate with a number average molecular weight of 1500g / mol

[0032] 2. Add the above-mentioned polypropylene carbonate and ethylene-vinyl acetate copolymer into the internal mixer, set the temperature of the internal mixer to 140°C, and the rotation speed to 50rpm. Diacid acid ester is added in internal mixer, continues banburying for 5 minutes, obtains reinforced modified polypropylene carbonate composition, measures the tensile strength, elongation at break and Young's modulus of reinforced modified polypropylene carbonate composition , and the test results are listed in Table 1.

Embodiment 2

[0034]1. Weigh the following components by weight:

[0035] Number average molecular weight is 36g of polypropylene carbonate of 150000g / mol

[0036] Ethylene-vinyl acetate copolymer 24g

[0037] 3g of poly-1,2-propanediol adipate with a number average molecular weight of 2000g / mol

[0038] 2. Add the above-mentioned polypropylene carbonate and ethylene-vinyl acetate copolymer into the internal mixer, set the temperature of the internal mixer to 140°C, and the rotation speed to 100rpm. Diacid acid ester is added in internal mixer, continues banburying for 5 minutes, obtains reinforced modified polypropylene carbonate composition, measures the tensile strength, elongation at break and Young's modulus of reinforced modified polypropylene carbonate composition , and the test results are listed in Table 1.

Embodiment 3

[0040] 1. Weigh the following components by weight:

[0041] Number average molecular weight is 24g of polypropylene carbonate of 150000g / mol

[0042] Ethylene-vinyl acetate copolymer 36g

[0043] 3g of poly-1,2-propanediol adipate with a number average molecular weight of 1500g / mol

[0044] 2. Add the above-mentioned polypropylene carbonate and ethylene-vinyl acetate copolymer into the internal mixer, set the temperature of the internal mixer to 140°C, and the rotation speed to 100rpm. Diacid acid ester is added in internal mixer, continues banburying for 5 minutes, obtains reinforced modified polypropylene carbonate composition, measures the tensile strength, elongation at break and Young's modulus of reinforced modified polypropylene carbonate composition , and the test results are listed in Table 1.

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Abstract

The invention relates to a reinforced modified poly(propylene carbonate) composition and a preparation method thereof, belonging to the field of modification of high polymer materials. The reinforced modified poly(propylene carbonate) composition comprises poly(propylene carbonate), ethylene-vinyl acetate copolymer and poly(1,2-propanediol adipate), wherein the weight ratio of the poly(propylene carbonate) to the ethylene-vinyl acetate copolymer to the poly(1,2-propanediol adipate) is (20-80):(20-80):(2-10). The reinforced modified poly(propylene carbonate) composition has higher tensile strength than the poly(propylene carbonate); the tensile strength can be up to 34.5 MPa; and the material has high tensile break extension percentage, flexibility and toughness and increases the anti-stick capability, thus ensuring that the poly(propylene carbonate) material has wider application space.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a reinforced modified polypropylene carbonate composition and a preparation method thereof. Background technique [0002] Polypropylene carbonate (Poly(propylene carbonate)), also known as polypropylene carbonate, abbreviated as PPC, is a copolymer of carbon dioxide and propylene oxide. It uses carbon dioxide as a raw material and is an environmentally friendly biodegradable material. It was first synthesized by Japanese scientist Inoue Xiangping and others (Inoue, S., Koinuma, H., Tsuruta, T., J. Polym. Sci., Polym. Lett. Ed., 1969, 7, 287-292.), and in my country First realized the industrialization. Polypropylene carbonate materials have broad application prospects in packaging materials, fibers and nonwovens, and medical and health fields due to their carbon dioxide fixation and biodegradable properties. [0003] Although polypropylene carbonate has the above adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08L67/02
CPCC08L69/00C08L23/08C08L2205/03
Inventor 张会良武丹丹郝艳平韩常玉边俊甲韩立晶董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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