PLA/PBAT biodegradable composite material and product thereof

A composite material and biodegradable technology, which is applied in the field of PLA/PBAT biodegradable composite materials and its products, can solve the problems of poor impact resistance and tear resistance, and achieve high impact strength, good environmental benefits, and good toughness.

Pending Publication Date: 2020-09-29
MITAC PRECISION TECH(KUNSHAN) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the brittleness of pure PLA, poor impact resistance and tear resistance, it cannot be used alone in products with higher elongation

Method used

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  • PLA/PBAT biodegradable composite material and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A PLA / PBAT biodegradable composite material, comprising 91.7 mass parts of polylactic acid (PLA), 5 mass parts of polybutylene adipate terephthalate (PBAT), 3 mass parts of polyethylene octene copolymer Graft maleic anhydride (POE-g-MAH) and 0.3 parts by mass of styrene-acrylate-epoxy acrylate copolymer.

[0029] Weigh the corresponding components according to the above proportions, mix and stir the components evenly, put them into a twin-screw extruder for melt blending, extrude and granulate, so as to obtain the PLA / PBAT biodegradable composite material.

Embodiment 2

[0034] A PLA / PBAT biodegradable composite material, comprising polylactic acid (PLA) of 63.7 mass parts, polybutylene adipate terephthalate (PBAT) of 30 mass parts, polyethylene octene copolymer of 3 mass parts Graft maleic anhydride (POE-g-MAH), 0.3 parts by mass of styrene-acrylate-epoxy acrylate copolymer and 3 parts by mass of talc.

[0035] Weigh the corresponding components according to the above proportions, mix and stir the components evenly, put them into a twin-screw extruder for melt blending, extrude and granulate, so as to obtain the PLA / PBAT biodegradable composite material.

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Abstract

The invention relates to the technical field of high polymer materials, and particularly discloses a PLA / PBAT biodegradable composite material and a product thereof. The PLA / PBAT biodegradable composite material is prepared from 33 to 95.9 parts by mass of polylactic acid (PLA), 3 to 60 parts by mass of polybutylene adipate terephthalate (PBAT), 1 to 5 parts by mass of a compatilizer and 0.1 to 2parts by mass of a chain extender. The PLA / PBAT biodegradable composite material has the characteristics of PLA and PBAT, and is high in impact strength and good in toughness.

Description

【Technical field】 [0001] The invention relates to the technical field of polymer materials, in particular to a PLA / PBAT biodegradable composite material and its products. 【Background technique】 [0002] Polylactic acid (PLA) is a new type of biodegradable material made of starch raw materials extracted from renewable plant resources (such as corn, potatoes, etc.). The starch raw material is saccharified to obtain glucose, and then fermented by glucose and certain strains to produce high-purity lactic acid, and then synthesize polylactic acid with a certain molecular weight by chemical synthesis. [0003] PLA has good biodegradability and can be completely degraded by microorganisms in nature after use, eventually producing carbon dioxide and water without polluting the environment, which is very beneficial to protecting the environment and is recognized as an environmentally friendly material. Therefore, PLA is widely used in daily consumables such as membranes and plates. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L25/14C08L51/06C08K3/34
CPCC08L67/04C08L2201/06C08L2205/035C08L2205/08C08L67/02C08L25/14C08L51/06C08K3/34
Inventor 马海丰
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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