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Heatproof and impact-resistant high transparency polylactic acid composite material and preparation method thereof

A composite material and polylactic acid technology are applied in the field of heat-resistant, impact-resistant, high-transparency polylactic acid composite materials and their preparation, and can solve the problem that the modified polylactic acid resin cannot take into account transparency, heat resistance, impact resistance and the like at the same time, Achieve the effect of ensuring service life, increasing crystallization speed, and good impact strength

Active Publication Date: 2019-03-29
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is: in order to solve the technical problem that the existing modified polylactic acid resin cannot take into account the transparency, heat resistance and impact resistance at the same time, to provide a heat-resistant and impact-resistant high-transparency polylactic acid composite material and its Preparation

Method used

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  • Heatproof and impact-resistant high transparency polylactic acid composite material and preparation method thereof
  • Heatproof and impact-resistant high transparency polylactic acid composite material and preparation method thereof
  • Heatproof and impact-resistant high transparency polylactic acid composite material and preparation method thereof

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Embodiment 1

[0036] This embodiment provides a heat-resistant and impact-resistant high-transparency polylactic acid composite material, comprising the following components by weight: 100 parts of three-arm branched polylactic acid (number average molecular weight is 50,000), 2 parts of toughening agent polybutylene Butylene glycol ester, 0.2 part of chain extender styrene-methyl methacrylate-glycidyl methacrylate terpolymer random copolymer, 0.5 part of crystallization nucleating agent poly-D lactic acid powder, 0.03 part of crystallization accelerator 1,3:2,4-bis(3,4-dimethyl)benzylidene sorbitol acetal, 0.6 part of antistatic agent bis(β-hydroxyethyl)cocamide.

[0037] The preparation method of the heat-resistant and impact-resistant high-transparency polylactic acid composite material:

[0038] Dry the three-arm branched polylactic acid in vacuum at 60°C for 10 hours until the water content is lower than 300ppm;

[0039] Uniformly blend the dried polylactic acid with toughening agent,...

Embodiment 2

[0044] This embodiment provides a heat-resistant and impact-resistant high-transparency polylactic acid composite material, comprising the following components by weight: 100 parts of five-arm branched polylactic acid (number average molecular weight is 200,000), 5 parts of toughening agent polybutylene Butylene glycol ester, 0.5 parts of chain extender styrene-methyl methacrylate-glycidyl methacrylate terpolymer random copolymer, 1 part of crystallization nucleating agent poly-D lactic acid powder, 0.01 part of crystallization accelerator Tribenzylidene Diester Hexanol, 1 part Antistatic Bis(β-Hydroxyethyl) Cocoamine.

[0045] The preparation method of the heat-resistant and impact-resistant high-transparency polylactic acid composite material:

[0046] Dry the three-arm branched polylactic acid in vacuum at 90°C for 6 hours until the water content is lower than 300ppm;

[0047] Uniformly blend the dried polylactic acid with toughening agent, chain extender, crystallization ...

Embodiment 3

[0052] This embodiment provides a heat-resistant and impact-resistant high-transparency polylactic acid composite material, comprising the following components by weight: 100 parts of three-arm branched polylactic acid (number average molecular weight is 100,000), 1 part of toughening agent polybutylene Butylene glycol ester, 0.1 part of chain extender styrene-methyl methacrylate-glycidyl methacrylate terpolymer random copolymer, 0.01 part of crystallization nucleating agent poly-D lactic acid powder, 0.05 part of crystallization accelerator Neopentyl glycol biphenyl ester, 0.1 parts of antistatic agent bis(β-hydroxyethyl) cocoamine.

[0053] The preparation method of the heat-resistant and impact-resistant high-transparency polylactic acid composite material:

[0054] Dry the three-arm branched polylactic acid in vacuum at 80°C for 8 hours until the water content is lower than 300ppm;

[0055] Uniformly blend the dried polylactic acid with toughening agent, chain extender, c...

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Abstract

The invention relates to a heatproof and impact-resistant high transparency polylactic acid composite material and a preparation method thereof. The composite material comprises the following components by weight: 100 parts of polylactic acid, 1-5 parts of a toughening agent, 0.1-0.5 part of a chain extender, 0.01-1 part of a crystallization nucleating agent, 0.01-0.05 part of a crystallization promoter, and 0.1-3 parts of an antistatic agent, wherein the polylactic acid is multi-arm branched polylactic acid. Compared with the conventional straight-chain polylactic resin, the branched polylactic acid has higher probability of intertwining of macromolecule long chains under a molten state, and the intertwining strength is greater, at the same time, the cooperative use of the toughening agent and the chain extender greatly increases the toughness of polylactic acid, and the synergistic effect of the crystallization nucleating agent and the crystallization promoter endows the polylactic acid material with high temperature resistance and ensures the transparency at the same time, and as an antistatic agent, bis(beta-hydroxyethyl)coconut oil amine greatly improves the antistatic properties of polylactic acid, therefore the y polylactic acid composite material can be applied to takeout tableware.

Description

technical field [0001] The invention relates to a heat-resistant, impact-resistant and highly transparent polylactic acid composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] In recent years, with the vigorous development of online catering takeaway services, while takeaway food brings great convenience to people's lives, a large number of takeaway packages that follow have caused great pollution to the environment. At present, the main component of mainstream products of plastic lunch boxes and tableware is polypropylene. Polypropylene has the advantages of low cost, easy production, and good performance. However, it is non-degradable and has become one of the main pollutants causing "white pollution". In the face of increasing environmental pollution, it is necessary to find environmentally friendly and fully biodegradable materials to replace polypropylene. [0003] Polylactic acid is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L77/02C08L53/02C08L23/08C08K5/06C08K5/17C08K5/20C08J3/24
CPCC08J3/246C08J2367/04C08J2423/08C08J2453/02C08J2467/02C08J2467/04C08J2477/02C08K5/06C08K5/17C08K5/20C08K2201/017
Inventor 曹勇民茅伟华
Owner 诺思贝瑞新材料科技(苏州)有限公司
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