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Wheat straw filled and modified PLA full-degradable plastic and preparation method thereof

A wheat straw, fully degradable technology, applied in the field of plastics, can solve the problems of poor heat resistance and water resistance

Pending Publication Date: 2021-06-08
柳州塑友科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above deficiencies, the present invention discloses a wheat straw filled modified PLA fully degradable plastic and its preparation method, which solves the problems of poor heat resistance and water resistance existing in the existing polylactic acid fully degradable plastics

Method used

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  • Wheat straw filled and modified PLA full-degradable plastic and preparation method thereof
  • Wheat straw filled and modified PLA full-degradable plastic and preparation method thereof
  • Wheat straw filled and modified PLA full-degradable plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A wheat straw filled modified PLA fully degradable plastic, which includes the following components in parts by weight: 27 parts of polybutylene succinate, 20 parts of polylactic acid, polyadipate / butylene terephthalate 7.6 parts, 22.5 parts of talcum powder, 22 parts of wheat straw powder, 0.9 parts of additives;

[0030] The auxiliary agent includes the following components in parts by weight: 5 parts of porous rare earth oxide, 3 parts of epoxy compound, 2 parts of lubricant, 2 parts of plasticizer, 1 part of antioxidant, 2 parts of heat stabilizer, antistatic 1 part of agent; the epoxy compound is epoxidized soybean oil; the plasticizer is citrate plasticizer; the lubricant is paraffin; the porous rare earth oxide is porous lanthanum oxide; It is butyl hydroxyanisole; the heat stabilizer is a phosphite heat stabilizer; the antistatic agent is a cationic quaternary ammonium salt.

[0031] The preparation method of wheat straw filled modified PLA fully degradable pla...

Embodiment 2

[0037] A wheat straw filled modified PLA fully degradable plastic, which includes the following components in parts by weight: 22 parts of polybutylene succinate, 18 parts of polylactic acid, polyadipate / butylene terephthalate 6.5 parts, 18.5 parts of talcum powder, 25 parts of wheat straw powder, 2.5 parts of additives;

[0038] The auxiliary agent includes the following components in parts by weight: 3 parts of porous rare earth oxide, 1 part of epoxy compound, 1 part of lubricant, 3 parts of plasticizer, 2 parts of antioxidant, 1 part of heat stabilizer, antistatic 3 parts of agent; The epoxy compound is epoxy butyl stearate; The plasticizer is maltitol; The lubricant is oxidized polyethylene wax; The porous rare earth oxide is porous lanthanum oxide; The antioxidant is a combination of equal weights of phenylene diisodecyl phosphite and pentaerythritol bisphosphite; the heat stabilizer is a hindered phenolic heat stabilizer; the antistatic agent is a polyol ester and a fat...

Embodiment 3

[0045] A wheat straw filled modified PLA fully degradable plastic, which includes the following components in parts by weight: 25 parts of polybutylene succinate, 20 parts of polylactic acid, polyadipate / butylene terephthalate 8 parts, 20 parts of talcum powder, 28 parts of wheat straw powder, 3.5 parts of additives;

[0046] The auxiliary agent includes the following components in parts by weight: 4 parts of porous rare earth oxide, 2 parts of epoxy compound, 3 parts of lubricant, 1 part of plasticizer, 3 parts of antioxidant, 3 parts of heat stabilizer, antistatic 2 parts of agent; Described epoxy compound is the combination that epoxy soybean oil and epoxy butyl stearate equal volumes mix; Described plasticizer is the combination that glycerin, sorbitol and xylitol mix equal volumes; Described lubricating The agent is paraffin; the porous rare earth oxide is porous lanthanum oxide; the antioxidant is dibutyl hydroxytoluene; combination.

[0047] The preparation method of ...

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Abstract

The invention discloses wheat straw filled and modified PLA full-degradable plastic. The full-degradable plastic is prepared from the following ingredients in parts by weight: 20 to 30 parts of poly (butylene succinate), 15 to 25 parts of polylactic acid, 5 to 10 parts of poly (butylene adipate / terephthalate), 15 to 30 parts of talcum powder, 20 to 30 parts of wheat straw powder and 0.5 to 5 parts of auxiliary agents. The auxiliary agent comprises the following components in parts by weight: 2-5 parts of porous rare earth oxide, 1-3 parts of an epoxy compound, 1-3 parts of a lubricant and 1-3 parts of a plasticizer. The preparation method comprises the following steps: mixing the polylactic acid and the porous rare earth oxide to obtain the modified polylactic acid, mixing the modified polylactic acid with the poly (butylene succinate), the poly (butylene adipate / terephthalate) and the epoxy compound, stirring and mixing an obtained mixture with the talcum powder, the wheat straw powder, the lubricant and the plasticizer, finally performing extrusion granulation through a twin-screw extruder, and performing drying to obtain the product plastic. The invention solves the problems of poor heat resistance and water resistance in existing polylactic acid full-degradable plastic.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a wheat straw-filled modified PLA fully degradable plastic and a preparation method thereof. Background technique [0002] In recent years, due to the increasingly prominent environmental problems and the gradual reduction of traditional petroleum resources, it is imminent to find new degradable materials. Therefore, biodegradable polymers have gradually become the object of attention. Polylactic acid (PLA) is a polyester polymer obtained by polymerizing lactic acid as the main raw material. It is widely used because of its pollution-free and biodegradable production process. In food packaging, medical materials, construction, agriculture, papermaking and many other fields, it can be made into film, sheet and fiber. However, due to the inherent brittleness and poor impact resistance of PLA, its wide application is greatly limited. How to modify polylactic acid to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L97/02C08L67/04C08K3/34C08K7/24
CPCC08L67/02C08L97/02C08L2205/025C08L2205/035C08L2201/06C08L2201/08C08L67/04C08K3/34C08K7/24
Inventor 蒋似梅梁进福邱宗群丘尚龙
Owner 柳州塑友科技有限公司
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