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Injecting molding grade natural fiber composite material and preparation method thereof

A natural fiber and composite material technology, applied in the field of natural fiber composite materials and their preparation, can solve the problems of natural fiber composite materials not suitable for injection molding parts, poor fluidity of natural fibers, poor appearance quality, etc., to achieve lightweight, high density Low, environmentally friendly effect

Inactive Publication Date: 2013-03-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor fluidity, low strength and poor appearance quality of composite materials added with a large amount of natural fibers, and to change the current situation that natural fiber composite materials are not suitable for injection molded parts with complex structures.

Method used

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  • Injecting molding grade natural fiber composite material and preparation method thereof
  • Injecting molding grade natural fiber composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] Embodiment 1, a kind of injection molding grade natural fiber composite material

[0023] A kind of injection molding grade natural fiber composite material, comprises the following component preparation of proportioning by weight:

[0024] Polypropylene (thermoplastic resin) 10kg;

[0025] 500 g of wood fibers (natural fibers) with an average length or particle size of less than 3 mm;

[0026] Triphenyl phosphite (anti-aging agent) 10g.

[0027] The natural fibers are treated with a silane coupling agent.

Embodiment 2

[0028] Embodiment 2, a kind of injection molding grade natural fiber composite material

[0029] A kind of injection molding grade natural fiber composite material, comprises the following component preparation of proportioning by weight:

[0030] Polypropylene (thermoplastic resin) 10kg;

[0031] 5 kg of wood fibers (natural fibers) with an average length or particle size of less than 3 mm;

[0032] Triphenyl phosphite (anti-aging agent) 500g.

[0033] The natural fibers are treated with a silane coupling agent.

Embodiment 3

[0034] Embodiment 3, a kind of injection molding grade natural fiber composite material

[0035] A kind of injection molding grade natural fiber composite material; Comprise the following component preparation of weight portion proportioning:

[0036] Polypropylene (thermoplastic resin) 10kg;

[0037] 2.5 kg of wood fibers (natural fibers) with an average length or particle size of less than 3 mm;

[0038] Triphenyl phosphite (anti-aging agent) 250g.

[0039] The natural fibers are treated with a silane coupling agent.

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Abstract

The invention relates to a natural fiber composite material and a preparation method of the composite material. The composite material comprises the following components in parts by weight: 100 parts of thermoplastic resin, 5-50 parts of natural fiber, 0-20 parts of impact modifier, 0-30 parts of inorganic filler, 0.1-5 parts of anti-aging agent, and 0-10 parts of processing aid. The preparation method of the composite material comprises the steps of adding the natural fiber into an aqueous solution of a saline coupling agent to soak, then drying the natural fiber, mixing the natural fiber with the other processing aids, feeding the mixed material into a double-screw extruder to subject to the melting extrusion, and granulating to obtain the composite material. Compared with the prior art, the preparation method is simple in process and environment-friendly. More importantly, the problems that the composite material, into which a large amount of natural fiber is added, is poor in material mobility, low in intensity of parts, and poor in appearance quality, are solved. The current situation that the natural fiber composite material cannot adapt to the injection moldings of complex structures is changed.

Description

technical field [0001] The invention relates to a natural fiber composite material and a preparation method thereof. Background technique [0002] Natural fibers are the main load-bearing components of composite materials, which can not only increase the strength and modulus of materials, but also reduce shrinkage, increase heat distortion temperature and impact strength, etc. Compared with synthetic fibers, natural fibers have the advantages of low price, low density, and easy degradation. With the enhancement of people's awareness of environmental protection, natural fiber, as a "green material", has been paid more and more attention by people, and its application range has been continuously expanded. As a resin-based composite material reinforcement, the development speed is very rapid. Especially the application of natural fiber composites in automobiles is driving the growth of the market. Several automotive components are manufactured using natural fiber composites, ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L97/02C08L23/16C08L27/06C08L23/08C08K13/02C08K5/526C08K3/26C08K5/20C08K3/34C08K13/04C08K7/14C08K7/20B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 唐少俊张正光
Owner CHERY AUTOMOBILE CO LTD
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