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Biodegradable toughening polylactic acid plastic and preparation method thereof

A biodegradable polylactic acid technology, applied in the field of plastics, can solve problems such as refractory degradation and poor impact resistance, and achieve the effects of convenient operation, improved toughness, and wide application prospects

Inactive Publication Date: 2011-11-16
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a biodegradable toughened polylactic acid plastic and its preparation method, to overcome the problem of difficult degradation of general-purpose plastic products; to overcome the defect of polylactic acid with poor impact resistance and to improve its comprehensive performance; Production process of tough polylactic acid plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Composition and content composition: 100 parts of polylactic acid resin, 10 parts of polybutylene adipate resin, 10 parts of tributyl citrate, 20 parts of barium sulfate (5000 mesh), 10.2 parts of polyether L6, Auxiliary glycerol 0.3 part. The amounts of the above materials are by weight.

[0052] (2) Pretreatment of raw materials: put polylactic acid resin and polybutylene adipate resin in a drying oven at a temperature of 80°C for 4 hours, barium sulfate at 110°C for 3 hours; The raw materials are stirred in a mixing mixer at high speed for 3 minutes, and then stirred at a low speed until they are evenly mixed.

[0053] (3) Extrusion granulation: The temperature of each section in the temperature control section of the twin-screw machine: the temperature of the first section is 110°C, the temperature of the second section is 130°C, the temperature of the third section is 145°C, the temperature of the fourth section is 155°C, and the temperature of the fifth secti...

Embodiment 2

[0055] (1) Composition and content composition: 100 parts of polylactic acid resin, 40 parts of polybutylene adipate resin, 20 parts of tributyl citrate, 40 parts of barium sulfate (5000 mesh), 10.4 parts of polyether L6, Auxiliary glycerin 0.4 parts. The amounts of the above materials are by weight.

[0056] (2) Pretreatment of raw materials: put polylactic acid resin and polybutylene adipate resin in a drying oven at a temperature of 80°C for 4 hours, barium sulfate at 110°C for 3 hours; The raw materials are stirred in a mixing mixer at high speed for 3 minutes, and then stirred at a low speed until they are evenly mixed.

[0057] (3) Extrusion granulation: The temperature of each section in the temperature control section of the twin-screw machine: the temperature of the first section is 110°C, the temperature of the second section is 130°C, the temperature of the third section is 150°C, the temperature of the fourth section is 160°C, and the temperature of the fifth sect...

Embodiment 3

[0059] (1) Composition and content composition: 100 parts of polylactic acid resin, 5 parts of polybutylene adipate resin, 15 parts of tributyl citrate, 20 parts of barium sulfate (5000 mesh), 10.2 parts of polyether L6, Auxiliary glycerin 0.5 part. The amounts of the above materials are by weight.

[0060] (2) Pretreatment of raw materials: put polylactic acid resin and polybutylene adipate resin in a drying oven at a temperature of 80°C for 4 hours, barium sulfate at 110°C for 3 hours; The raw materials are stirred in a mixing mixer at high speed for 3 minutes, and then stirred at a low speed until they are evenly mixed.

[0061] (3) Extrusion granulation: the temperature of each section in the temperature control section of the twin-screw machine: the temperature of the first section is 110°C, the temperature of the second section is 130°C, the temperature of the third section is 140°C, the temperature of the fourth section is 160°C, and the temperature of the fifth sectio...

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Abstract

The invention relates to the field of plastic, and discloses a biodegradable toughening polylactic acid plastic and a preparation method thereof. The biodegradable toughening polylactic acid plastic comprises components of polylactic acid resin and copolymers thereof, polybutylene adipate resin, tributyl citrate and barium sulfate and surfactant thereof. The invention aims to provide a biodegradable toughening polylactic acid plastic and a preparation method thereof, so as to overcome a problem of difficultly degraded general-purpose plastic products and a defect of weak shock resistance of polylactic acid, raise comprehensive properties of polylactic acid, and provide a preparation method of a toughening polylactic acid plastic.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a biodegradable toughened polylactic acid plastic and a preparation method thereof. Background technique [0002] With the development of the plastic industry, plastic products are used more and more widely, but at the same time, the plastic waste generated by plastic products is also increasing, and the adverse impact on the environment tends to be serious. The traditional plastic waste treatment methods are mainly recycling, burial, and incineration. These treatment methods have low efficiency, high energy consumption, and a large amount of toxic gas will be generated during incineration, which is likely to cause secondary pollution to the environment. In order to protect the environment, people have proposed the research and preparation of biodegradable plastics. [0003] Biodegradable plastics are a type of plastics that are degraded by the action of microorganisms such as bacteria, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08K13/02C08K5/11C08K3/30B29B9/06B29C47/92B29C48/92
CPCB29C48/92B29C48/875B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 徐东徐永潘明熙
Owner SHENZHEN KEJU NEW MATERIAL
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