High-strength durable polylactic acid and preparation method thereof

一种聚乳酸、耐久的技术，应用在高强耐久聚乳酸及其制备领域，能够解决聚乳酸力学强度和耐久性差等问题，达到易于操作、工艺简单、力学性能性好的效果

Inactive Publication Date: 2019-02-05
CHANGCHUN YUNCHUANG SPACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of poor mechanical strength and durability of polylactic acid in the prior art, and to provide a high-strength and durable polylactic acid and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] High-strength and durable polylactic acid, consisting of 100 parts by weight of polylactic acid (100,000), 5 parts by weight of polyadipate / butylene terephthalate resin, and 3 parts by weight of 2-(3,4-dihydroxyphenyl)ethylamine , 4.5 parts by weight of polycarbonate, 1 part by weight of wood powder, 2 parts by weight of silane coupling agent KH550, 1 part by weight of antioxidant 1010, 1.5 parts by weight of polyethylene wax, 2.5 parts by weight of ethylene-vinyl acetate copolymer, 1 part by weight of wollastonite powder (300 mesh), 0.5 part by weight of ultraviolet absorber UV-9, 1 part by weight of sodium phosphite and 0.5 part by weight of heat stabilizer tris (2,4-di-tert-butylphenyl) phosphite .

[0023] The preparation method of the above-mentioned high-strength and durable polylactic acid is to weigh the raw materials according to the composition and proportion, mix them evenly, and then add them to a twin-screw extruder for blending and extruding to obtain high...

Embodiment 2

[0025] High-strength and durable polylactic acid, consisting of 100 parts by weight of polylactic acid (200,000), 8 parts by weight of polyadipate / butylene terephthalate resin, and 5 parts by weight of 2-(3,4-dihydroxyphenyl)ethylamine , 7.5 parts by weight of polycarbonate, 2 parts by weight of wood flour, 4 parts by weight of silane coupling agent KH550, 3 parts by weight of antioxidant 1010, 3 parts by weight of polyethylene wax, 3 parts by weight of ethylene-vinyl ester copolymer, 2 parts by weight of wollastonite powder (700 mesh), 1.5 parts by weight of ultraviolet absorber UV-9, 3 parts by weight of sodium phosphite and 1 part by weight of heat stabilizer tris (2,4-di-tert-butylphenyl) phosphite .

[0026] The preparation method of the above-mentioned high-strength and durable polylactic acid is to weigh the raw materials according to the composition and proportion, mix them evenly, and then add them to a twin-screw extruder for blending and extruding to obtain high-str...

Embodiment 3

[0028] High-strength and durable polylactic acid, consisting of 100 parts by weight of polylactic acid (250,000), 6 parts by weight of polyadipate / butylene terephthalate resin, and 4 parts by weight of 2-(3,4-dihydroxyphenyl)ethylamine , 6 parts by weight of polycarbonate, 1.5 parts by weight of wood powder, 3 parts by weight of silane coupling agent KH550, 2 parts by weight of antioxidant 1010, 2 parts by weight of polyethylene wax, 2.5 parts by weight of ethylene-vinyl acetate copolymer, 1.5 parts by weight of wollastonite powder (500 mesh), 1 part by weight of ultraviolet absorber UV-9, 2 parts by weight of sodium phosphite and 0.8 parts by weight of heat stabilizer tris (2,4-di-tert-butylphenyl) phosphite .

[0029] The preparation method of the above-mentioned high-strength and durable polylactic acid is to weigh the raw materials according to the composition and proportion, mix them evenly, and then add them to a twin-screw extruder for blending and extruding to obtain h...

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Abstract

The invention relates to high-strength durable polylactic acid and a preparation method thereof, belongs to the technical field of composite materials, and aims to solve the technical problems of lowmechanical strength and poor durability of polylactic acid in the prior art. The high-strength durable polylactic acid is prepared from 100 parts by weight of polylactic acid, 5 to 8 parts by weight of poly(butylene adipate-co-terephthalate) resin, 3 to 5 parts by weight of 2-(3,4-dihydroxyphenyl)ethylamine, 4.5 to 7.5 parts by weight of polycarbonate, 1 to 2 parts by weight of wood flour, 2 to 4parts by weight of silane coupling agent, 1 to 3 parts by weight of antioxidant, 1.5 to 3 parts by weight of polyethylene wax, 2.5 to 3 parts by weight of ethylene-vinyl acetate copolymer, 1 to 2 parts by weight of wollastonite powder, 0.5 to 1.5 parts by weight of ultraviolet light absorber, 1 to 3 parts by weight of sodium phosphite and 0.5 to 1 part by weight of heat stabilizer. The high-strength durable polylactic acid has high mechanical performance and high durability.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a high-strength and durable polylactic acid and a preparation method thereof. Background technique [0002] There is a hydroxyl group and a carboxyl group in a single lactic acid molecule, and multiple lactic acid molecules are together, and the -OH of one lactic acid molecule is dehydrated and condensed with the -COOH of another lactic acid molecule to form a polymer, which is polylactic acid. Polylactic acid (chemical formula H-[OCHCH 3 CO]n-OH, referred to as PLA) has the advantages of good biodegradability, good biocompatibility, good gloss, good transparency, good hand feeling, etc. It has a wide range of uses and can be used as packaging materials, fibers and nonwovens, etc. , mainly used in clothing (underwear, outerwear), industry (construction, agriculture, forestry, papermaking) and medical and health fields, polylactic acid is easy to process a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L69/00C08L23/06C08L23/08C08L97/02C08K13/02C08K3/34C08K3/32C08K5/526
CPCC08L67/04C08L2205/035C08L67/02C08L69/00C08L23/06C08L23/0853C08L97/02C08K13/02C08K3/34C08K3/32C08K5/526
Inventor 裴彦敏
Owner CHANGCHUN YUNCHUANG SPACE TECH CO LTD
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