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A heat-resistant and impact-resistant highly transparent polylactic acid composite material and its preparation method

A composite material, polylactic acid technology, which is applied in the field of heat-resistant and impact-resistant high-transparency polylactic acid composite materials and its preparation, can solve the problems that modified polylactic acid resin cannot simultaneously take into account transparency, heat resistance, and impact resistance. Achieve the effect of guaranteeing service life, improving crystallization speed and good impact strength

Active Publication Date: 2021-05-25
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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  • A heat-resistant and impact-resistant highly transparent polylactic acid composite material and its preparation method
  • A heat-resistant and impact-resistant highly transparent polylactic acid composite material and its preparation method
  • A heat-resistant and impact-resistant highly transparent polylactic acid composite material and its preparation method

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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 heat-resistant and impact-resistant high-transparency polylactic acid composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of polylactic acid, 1-5 parts of toughening agent, and 0.1-0.5 parts of chain extender , 0.01-1 part of crystallization nucleating agent, 0.01-0.05 part of crystallization accelerator, 0.1-3 part of antistatic agent, the polylactic acid is multi-arm branched polylactic acid. Compared with the conventional linear polylactic acid resin, the branched polylactic acid has a higher probability of intertwining macromolecular long chains in the molten state, and the intertwining strength is also greater. The joint use of chain agents greatly increases the toughness of polylactic acid, and the synergistic effect of crystallization nucleating agent and crystallization accelerator enables polylactic acid materials to obtain high temperature resistance while ensuring their transparency. Hydroxyethyl) cocoamine is used as an antistatic agent, which greatly improves the antistatic property of polylactic acid, and can be applied to takeaway 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 Patents(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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