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Wood-plastic composite prepared by use of short fiber and preparation method thereof

A wood-plastic composite material and short fiber technology, which is applied in the removal of solid waste and grain processing, can solve the problems of high cost and low mechanical properties, and achieve the effects of low cost, improved mechanical properties, and reduced edge wear.

Inactive Publication Date: 2015-04-01
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of high cost and low mechanical properties of the above-mentioned wood-plastic composite materials, in order to realize the resource Sustainable utilization of the wood-plastic composite material, the present invention will provide a wood-plastic composite material prepared by using short fibers and a preparation method thereof, which reduces the cost of the wood-plastic composite material, and enhances the mechanical properties of the wood-plastic composite material by adding long fibers; the present invention will Mechanical activation is introduced into the solid-phase coupling modification to strengthen and improve the interfacial compatibility between short fiber waste and thermoplastics. This preparation method has the advantages of low energy consumption, simple process, no pollution, and easy operation.

Method used

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  • Wood-plastic composite prepared by use of short fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Select 4kg of cassava wine tank short fiber, dry it at 100°C to make its water content ≤ 5%, crush it to 60 mesh, and obtain cassava wine tank powder; add the above cassava wine tank powder into the mixer, and add 0.1kg The silane coupling agent and 1 kg of sisal fiber are uniformly mixed in a high-speed mixer to obtain a mixed fiber.

[0043] Add the above-mentioned mixed fiber and grinding medium pile volume into the mechanically activated stirring ball mill according to the ratio of 100g:200ml, stir and mix at the speed of 600rpm and the temperature of the constant temperature water bath at 60°C, after the activation time of 30min is reached, stop heating and stirring, and quickly After cooling, the raw materials and balls are taken out and separated to obtain modified fibers.

[0044] The modified fiber obtained above, polyethylene plastics, calcium stearate lubricant, di-n-tin laurate heat stabilizer and β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid normal T...

Embodiment 2

[0047] Select 4.5kg of short sisal slag fibers, dry them at a high temperature of 120°C to make their water content ≤ 5%, grind them to 40 meshes, and obtain sisal slag powder; put the above sisal slag powder into a mixer, and add 0.2 Kg aluminate coupling agent and 1.5Kg sisal fiber are mixed uniformly in a high-speed mixer to obtain a mixed fiber.

[0048] Add the above-mentioned mixed fiber and grinding medium bulk volume into a mechanically activated agitating ball mill according to the ratio of 100g:300ml, and stir the reaction at a speed of 400rpm and a constant temperature water bath temperature of 65°C. After the activation time of 40min, stop heating and stirring, and quickly After cooling, the raw materials and balls are taken out and separated to obtain modified fibers.

[0049] The above-mentioned obtained modified fiber, polyvinyl chloride plastic, zinc stearate lubricant, calcium-zinc composite heat stabilizer and pentaerythritol tetrakis (bis-T-butyl hydroxyhydr...

Embodiment 3

[0052] Select 2.5kg of the mixture of sisal residue and cassava wine tank, dry it at a high temperature of 100°C to make its water content ≤ 5%, grind it to 80 mesh, and obtain short fiber powder; put the above short fiber powder into the mixer, and add 0.15Kg of aluminate and titanate mixture, 2Kg of sisal fiber and bagasse fiber mixture were uniformly mixed in a high-speed mixer to obtain mixed fibers.

[0053] Add the above-mentioned mixed fiber and grinding medium bulk volume into the mechanically activated agitating ball mill according to the ratio of 100g:400ml, stir and mix at a speed of 500rpm and a constant temperature water bath temperature of 70°C, after the activation time of 20min is reached, stop heating and stirring, and quickly After cooling, the raw materials and balls are taken out and separated to obtain modified fibers.

[0054] The modified fiber obtained above, polypropylene, oleic acid amide and calcium stearate mixture, thiol octyl ester and rare earth ...

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Abstract

The invention relates to a wood-plastic composite prepared by use of short fiber and a preparation method thereof. The wood-plastic composite comprises short fiber, long fiber, plastic, coupling agent and auxiliaries, wherein the auxiliaries include a lubricant, a heat stabilizer and an antioxidant. In the invention, the wood-plastic composite is prepared by taking short fiber waste and long fiber as reinforcing materials and thermoplastic plastic polymer as a matrix; and the preparation method comprises the following steps: performing pretreatment of raw materials, adding long fiber and mixing at a high speed, performing mechanical activation coupling and solid phase modification, adding plastic and mixing at a high speed, plastifying and performing hot-press forming to obtain the wood-plastic composite. The wood-plastic composite provided by the invention has the advantages of low cost, good mechanical properties, lower density than common wood-plastic composite, simple production process, no pollution during production and the like.

Description

technical field [0001] The invention relates to the field of wood-plastic composite material preparation, in particular to a wood-plastic composite material prepared by using short fibers and a preparation method thereof. Background technique [0002] With the rapid development of the plastic industry, the "white pollution" caused by plastic products has brought great harm to human production and living environment. In order to solve the shortage of raw materials and environmental problems, people gradually shift their attention to the renewable resources on the earth. Plant fiber material is a kind of natural polymer material, which is an inexhaustible resource. The potential advantages of plant fibers used in composite materials have attracted more and more attention. Its low price, low density, biodegradability and renewability are the most prominent advantages. At present, wood-plastic composite materials have become a research hotspot in today's society. [0003] Wood...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L27/06C08L25/06C08L97/02B29B7/00B29C51/00B29C35/02
CPCC08L97/02B02C17/10B09B3/00B29B7/02B29B13/06B29C35/02C08K2201/014C08L23/06C08L23/12C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2205/16
Inventor 张燕娟黄祖强阮恒胡华宇黄尚顺冯振飞黄爱民杨梅覃宇奔覃杏珍李志霞朱园勤沈芳
Owner GUANGXI UNIV
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