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Preparation method for natural plant fiber plastic

A natural plant fiber and plastic technology, which is applied in the field of preparation of natural plant fiber plastic, can solve the problems of poor performance, difficulty and poor compatibility of cellulose

Inactive Publication Date: 2013-01-02
WENZHOU NAIDANGLAO SHOES MATERIALS
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AI Technical Summary

Problems solved by technology

[0004] Although the research on plant fiber / thermoplastic composites has made great progress, the potential advantages of cellulose have not been brought into play, mainly because most thermoplastics are non-polar and hydrophobic, so thermoplastics and natural The compatibility between cellulose is very poor, and the interfacial adhesion is very small
Moreover, the water-absorbing cellulose has poor performance; in the blending process, the matrix resin melt must be able to infiltrate the fiber well, but due to the poor compatibility of the two, it is difficult to form a physical or chemical bond, and the interface layer is very difficult. thin, high interfacial tension

Method used

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Embodiment Construction

[0012] A preparation method of natural plant fiber plastic, comprising 59.5%-69.5% matrix resin, 30%-40% hemp fiber, 0.1%-0.4% compatibilizer, 0.1%-0.4% anti-aging additive, in order to obtain corresponding different Strong material, the first step is to melt 59.5%-69.5% matrix resin, 0.1%-0.4% compatibilizer, 0.1%-0.4% anti-aging additives to obtain molten resin; the second step is to melt the resin in the molten resin Add 30%-40% hydrophobically modified hemp fiber without free water for blending; the third step, after blending, when the hemp fiber is uniformly dispersed in the matrix resin, it is extruded and granulated by a short screw, and finally granulated Processing, the finely ground granules are dried and then added with an adhesive to make granules with a particle size of about 0.1 mm. The specific proportions, the proportion of matrix resin is 59.5%, the proportion of hemp fiber is 40%, the proportion of compatibilizer is 0.4%, and the proportion of anti-aging addi...

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Abstract

The invention relates to a preparation method for a plastic raw material, especially a preparation method for a natural plant fiber plastic. The preparation method for a natural plant fiber plastic includes the first step by melting (by weight percentage) 59.5-69.5 base resin, 0.1-0.4 compatilizer, and 0.1-0.4 ageing resistance auxiliary agent, to obtain molten resin; the second step by adding 30-40% free-water-free hydrophobic modified bastose into the molten resin for performing blending; the third step by extruding via a short screw stem for granulation after the bastose is uniformly dispersed in the base resin. The plastic material obtained via the method has the advantages of high tensile yield strength, high bending strength, and high notch-free impact strength, and can be used in a plane, a steamship, an automobile, and other instruments. Relative to conventional loading strength material, plastic has lighter weight and can reduce whole weight of a transportation tool, with obvious effect.

Description

technical field [0001] The invention relates to a method for preparing plastic raw materials, in particular to a method for preparing natural plant fiber plastics. Background technique [0002] Plant fiber composites have been used thousands of years ago. The research on compounding of plant fibers and synthetic resins also has a long history. The wood fibers originally studied were in powder form and were used as fillers in thermosetting plastics. At this stage, due to the development level of polymer science and the limitation of technical means, the most widely used fibers are bast fibers with large lengths, such as flax, jute, etc., and the resins are mostly thermosetting plastics, such as phenolic resins, unsaturated polyesters, etc. Esters etc. The process is also relatively simple, and the most successful application is wood pulp fiber reinforced phenolic resin injection molding, and a commercial product was obtained in 1970. [0003] After the 1980s, people began...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L97/02C08J3/20
Inventor 戴志雄
Owner WENZHOU NAIDANGLAO SHOES MATERIALS
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