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Natural fiber and polylactic acid compound material and preparation method thereof

A natural fiber and composite material technology, applied in the field of composite materials, can solve the problems of poor mechanical strength of polylactic acid and achieve good mechanical properties, easy operation and simple process

Inactive Publication Date: 2019-01-25
长春云创空间科技有限公司
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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 of polylactic acid in the prior art, to provide a natural fiber polylactic acid composite material and its preparation method

Method used

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  • Natural fiber and polylactic acid compound material and preparation method thereof
  • Natural fiber and polylactic acid compound material and preparation method thereof
  • Natural fiber and polylactic acid compound material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The natural fiber polylactic acid composite material is made of 60 parts by weight polylactic acid (80,000), 2 parts by weight bamboo fiber, 1 part by weight hemp fiber, 2 parts by weight glass fiber, 2 parts by weight carbon fiber, 2.5 parts by weight polypropylene fiber, 3 parts by weight Parts of seaweed fiber, 1 part by weight of wood flour, 1 part by weight of silane coupling agent KH550, 1 part by weight of antioxidant 1010, 3 parts by weight of epoxy soybean oil and 2 parts by weight of compatibilizer ethylene-vinyl ester copolymer.

[0022] The preparation method of the above-mentioned natural fiber polylactic acid composite material is to weigh each raw material according to the composition and proportion, after mixing evenly, add a twin-screw extruder to blend and extrude granulation to obtain the natural fiber polylactic acid composite material, twin-screw extrusion The melting temperature of the machine is 160-180°C.

Embodiment 2

[0024] Natural fiber polylactic acid composite material is made of 65 parts by weight polylactic acid (150,000), 4 parts by weight bamboo fiber, 3 parts by weight hemp fiber, 3.5 parts by weight glass fiber, 3 parts by weight carbon fiber, 4 parts by weight polypropylene fiber Seaweed fiber, 4 parts by weight of wood powder, 3 parts by weight of silane coupling agent KH550, 2 parts by weight of antioxidant 1010, 10 parts by weight of epoxy soybean oil and 6 parts by weight of compatibilizer ethylene-vinyl ester copolymer.

[0025] The preparation method of the above-mentioned natural fiber polylactic acid composite material is to weigh each raw material according to the composition and proportion, after mixing evenly, add a twin-screw extruder to blend and extrude granulation to obtain the natural fiber polylactic acid composite material, twin-screw extrusion The melting temperature of the machine is 160-180°C.

Embodiment 3

[0027] Natural fiber polylactic acid composite material is made of 65 parts by weight polylactic acid (200,000), 3 parts by weight bamboo fiber, 2 parts by weight hemp fiber, 3 parts by weight glass fiber, 2.5 parts by weight carbon fiber, 3 parts by weight polypropylene fiber, 3 parts by weight Parts of seaweed fiber, 2 parts by weight of wood powder, 2 parts by weight of silane coupling agent KH550, 1.5 parts by weight of antioxidant 1010, 6 parts by weight of epoxy soybean oil and 4 parts by weight of compatibilizer ethylene-vinyl ester copolymer.

[0028] The preparation method of the above-mentioned natural fiber polylactic acid composite material is to weigh each raw material according to the composition and proportion, after mixing evenly, add a twin-screw extruder to blend and extrude granulation to obtain the natural fiber polylactic acid composite material, twin-screw extrusion The melting temperature of the machine is 160-180°C.

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Abstract

The invention relates to a natural fiber and polylactic acid compound material and a preparation method thereof, and belongs to the technical field of compound materials. The technical problem of poormechanical strength of polylactic acid in the prior art is solved. The natural fiber and polylactic acid compound material is prepared from 60-70 parts by weight of the polylactic acid, 2-4 parts byweight of bamboo fibers, 1-3 parts by weight of bast fibers, 2-3.5 parts by weight of glass fibers, 2-3 parts by weight of carbon fibers, 2.5-3.5 parts by weight of polypropylene fibers, 3-4 parts byweight of alginate fibers, 1-4 parts by weight of wood flour, 1-3 parts by weight of silane coupling agent, 1-2 parts by weight of antioxidant, 3-10 parts by weight of epoxidized soybean oil and 2-6 parts by weight of compatibilizer ethylene-vinyl acetate copolymer. The natural fiber and polylactic acid compound material has very good mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a natural fiber polylactic acid composite material 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 pr...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L97/02C08L1/02C08L23/12C08K7/14C08K7/06
CPCC08L67/04C08L2205/025C08L2205/035C08L2205/16C08L97/02C08L1/02C08L23/12C08K7/14C08K7/06
Inventor 裴彦敏
Owner 长春云创空间科技有限公司