Modified PLA full-degradable plastic and preparation method thereof

A fully degradable and modified technology, applied in the field of plastics, can solve problems such as poor rigidity and difficult molding

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

[0004] In view of the above deficiencies, the present invention discloses a modified PLA fully degradable plastic and its preparation method, which solves the problems of poor rigidity and difficulty in molding existing in the existing polylactic acid fully degradable plastics.

Method used

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  • Modified PLA full-degradable plastic and preparation method thereof
  • Modified PLA full-degradable plastic and preparation method thereof
  • Modified PLA full-degradable plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A modified PLA fully degradable plastic, which includes the following components in parts by weight: 27 parts of polybutylene succinate, 21.6 parts of polylactic acid, 6 parts of polyadipate / butylene terephthalate, 12.5 parts of talcum powder, 12 parts of porous ceramics, 32 parts of bamboo powder, and 0.9 parts of additives; the porous ceramics are mixed with silicon nitride powder and rare earth oxide according to the mass ratio of 100:4, after grinding, Obtained after drying and sintering, the rare earth oxide is lanthanum oxide;

[0028] The auxiliary agent includes the following components in parts by weight: 3 parts of epoxy compound, 2 parts of lubricant, 2 parts of plasticizer, 2 parts of antioxidant, 3 parts of heat stabilizer, 3 parts of antistatic agent; The oxygen compound is a combination of epoxy linseed oil and epoxy octyl stearate in equal volume; the plasticizer is glycerin; the lubricant is paraffin; the antioxidant is t-butyl hydroquinone and ethylene...

Embodiment 2

[0034] A modified PLA fully degradable plastic, which includes the following components in parts by weight: 25 parts of polybutylene succinate, 22.5 parts of polylactic acid, 8 parts of polyadipate / butylene terephthalate, 11.5 parts of talcum powder, 12 parts of porous ceramics, 35 parts of bamboo powder, and 1.5 parts of additives; the porous ceramics are mixed with silicon nitride powder and rare earth oxides according to the mass ratio of 100:3, after grinding, Obtained after drying and sintering, the rare earth oxide is lanthanum oxide;

[0035] The auxiliary agent includes the following components in parts by weight: 1 part of epoxy compound, 2 parts of lubricant, 1 part of plasticizer, 1 part of antioxidant, and 1 part of antistatic agent; the plasticizer is sorbitol; The lubricant is oxidized polyethylene wax; the epoxy compound is epoxy octyl stearate; the antioxidant is pentaerythritol diphosphite; and the antistatic agent is fatty acid ester.

[0036]The preparation...

Embodiment 3

[0041] A modified PLA fully degradable plastic, which includes the following components in parts by weight: 22 parts of polybutylene succinate, 20.5 parts of polylactic acid, 7 parts of polyadipate / butylene terephthalate, 13.5 parts of talcum powder, 13 parts of porous ceramics, 38 parts of bamboo powder, and 3 parts of auxiliary agents; the porous ceramics are mixed with silicon nitride powder and rare earth oxide according to the mass ratio of 100:3.5, after grinding, Obtained after drying and sintering, the rare earth oxide is lanthanum oxide;

[0042] The auxiliary agent includes the following components in parts by weight: 2 parts of epoxy compound, 1 part of lubricant, 3 parts of plasticizer, 3 parts of antioxidant, 2 parts of heat stabilizer, 2 parts of antistatic agent; The plasticizer is maltitol; the lubricant is polyethylene wax; the epoxy compound is epoxy linseed oil; the heat stabilizer is equal weight mixture of phosphite heat stabilizer and hindered phenol heat...

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Abstract

The invention discloses modified PLA full-degradable plastic. The modified PLA full-degradable plastic is prepared from the following components in parts by weight: 20 to 30 parts of poly (butylene succinate), 20 to 25 parts of polylactic acid, 5 to 10 parts of poly (butylene adipate / terephthalate), 10 to 15 parts of talcum powder, 10 to 15 parts of porous ceramic, 30 to 40 parts of bamboo powder and 0.5 to 5 parts of an auxiliary agent. The auxiliary agent comprises the following components in parts by weight: 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: stirring and mixing the poly (butylene succinate), the polylactic acid, the poly (butylene adipate / terephthalate) and the epoxy compound, adding the porous ceramic, performing stirring and mixing, stirring and mixing an obtained mixture with the talcum powder, a bamboo powder, the lubricant and the plasticizer, performing extruding and granulating by a double-screw extruder, and performing drying to obtain the modified PLA full-degradable plastic. The problems that existing polylactic acid full-degradable plastic is poor in rigidity, not easy to form and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a fully degradable modified PLA plastic and a preparation method thereof. Background technique [0002] Polylactic acid (PLA), also known as polylactide, is a polyester polymer obtained by polymerization of lactic acid as the main raw material. It is a new type of biodegradable material. Because of its complete biodegradability, polylactic acid has attracted much attention in plastic products, and it is suitable for various processing methods such as blow molding and thermoplastic. It is easy to process and widely used. At present, polylactic acid plastics have been used to process various plastic products from industry to civilian use, packaged food, fast food lunch boxes, non-woven fabrics, industrial and civilian fabrics, etc., and then processed into agricultural fabrics, health care fabrics, rags, sanitary products, Outdoor UV-resistant fabrics, tent fabrics, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L97/02C08K7/26C08K3/34
CPCC08L67/02C08L67/04C08L2201/06C08L2205/025C08L2205/035C08L2201/08C08L97/02C08K7/26C08K3/34
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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