Plant fiber wood-plastic composite material and preparation method thereof

A wood-plastic composite material and plant fiber technology, which is applied in the field of plant fiber wood-plastic composite material and its preparation, can solve the problems of high equipment cost, environmental pollution, complicated steps, etc., and achieves enhanced response ability, simplified step process, and improved interface. Compatibility effect

Inactive Publication Date: 2013-02-27
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of existing traditional physical and chemical modification processes such as complex steps, high equipment costs, and environmental pollution, and introduce mechanical activation methods into plant fiber activation and surface modification. The surface modification step after mechanical activation is improved to synchronize the mechanical activation and coupling modification process to strengthen and improve its interface compatibility with thermoplastics, simplify the production and preparation process, easy to operate, pollution-free, and low production cost. The recycling of plant fiber regeneration resources increases its added value and has significant ecological and environmental benefits

Method used

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  • Plant fiber wood-plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select 1000g of cassava distiller's grains, dry them at 100-120 degrees Celsius for 100-120 minutes to make their water content 7%, and crush them to 150-180 mesh. Mix the pulverized cassava distiller's grains and the grinding ball medium according to the ratio of 100g:500ml, at a speed of 700~900rpm, at a temperature of 55 degrees Celsius, stir for 70~90min, add 2% calcium carbonate, and stir evenly. While stirring, use the heat generated by the system itself to raise the temperature to 80 degrees Celsius, then add 55 g of aluminate coupling agent and continue stirring for 10-50 minutes, and discharge to obtain modified cassava distiller's grains.

[0035] The modified cassava distiller's grains obtained above, plastic PVC, silicone oil, diethylenetriamine, butyltin mercaptide, and stearic acid are mixed in a mixing machine at a speed of 6000~ Mix at 7000rpm for 20-30min to obtain the mixed material.

[0036] Put the mixed material obtained above into the mold, raise ...

Embodiment 2

[0038] Select 1000g of cassava distiller's grains and bagasse mixture, dry it at 100-120 degrees Celsius for 70-90 minutes to make its water content 8%, and crush it to 90-120 mesh. Mix the pulverized mixture and the grinding ball medium according to the ratio of 100g:900ml, at a speed of 300~500rpm, at a temperature of 50 degrees Celsius, after stirring for 100~120min, add 8% calcium carbonate, and stir evenly. In the case of stirring, use the heat generated by the system itself to raise the temperature to 85 degrees Celsius, add 35g of titanate and aluminate mixed coupling agent and continue stirring for 25-35min, and discharge to obtain modified plant fibers.

[0039] The modified plant fiber, plastic PVC, paraffin wax, rosin, di-n-tin laurate, and chlorinated paraffin obtained above are mixed according to the mass ratio of 47.5:47:1:2:1.5:1 in a mixing machine at a speed of 5000~5500rpm Mix for 35~45 minutes to get the mixed material.

[0040] Put the mixed material obtai...

Embodiment 3

[0042] Select 1000g of bagasse, dry it at 100-120 degrees Celsius for 110-130 minutes to make its water content 6%, and crush it to 120-150 mesh. Mix the pulverized bagasse and the grinding ball medium according to the ratio of 100g:600ml, at a speed of 250~300rpm, at a temperature of 60 degrees Celsius, after stirring for 50~70min, add 5% calcium carbonate, and stir evenly. In the case of stirring, use the heat generated by the system itself to raise the temperature to 80 degrees Celsius, then add 60 g of aluminate coupling agent and continue stirring for 10-50 minutes, and discharge to obtain modified bagasse.

[0043] The modified bagasse obtained above, plastic PVC and PE mixture, butyl stearate and silicone oil mixture, 1,2-hydroxystearic acid, mercaptan octyl ester, and zinc stearate were mixed in a mass ratio of 50:43.7 : 3: 0.8: 1: 1.5 Mix in a mixing machine for 50-60 minutes at a speed of 7000 rpm to obtain a mixed material.

[0044] Put the mixed material obtained ...

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Abstract

The invention relates to a plant fiber wood-plastic composite material and a preparation method thereof. The wood-plastic composite material includes compositions by mass: 40-60% of plant fibers, 0.6-3% of a coupling agent, and 30-55% of plastic. The additive comprises: 0.5-5% of a lubricating additive, 0.5-3% of a dispersing additive, 0.5-2% of a thermal stability additive, and 1-2% of a plasticizing additive. The modified plant fibers are obtained through synchronous activation and modification of plant fiber and a coupling agent by using the mechanical activation technology. Then the modified plant fibers, the plastic and the additive are high-speed mixed and finally molded to form the wood-plastic composite. The material utilizes the waste plant fibers in the light industry and agriculture, and has significant ecological environmental benefits. The method realizes simultaneous activation and modification for plant fibers, simplifies the preparation process, is pollution-free and has no three waste discharging in the process. The coupling agent-modified plant fibers is improved in compatibility with a thermoplastic material, and the quality of the wood-plastic composite material is enhanced.

Description

technical field [0001] The invention belongs to the field of composite material processing, in particular to a plant fiber wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-Plastic Composites (WPC for short) use wood fibers or plant fibers as reinforcement materials, thermoplastic polymer materials (such as PE, PP, PVC) and waste plastics as matrix substances, after high temperature mixing, It is a new type of composite material with low price and high performance, which is obtained through molding processing. At the same time, the raw materials for the production of wood-plastic composite materials are mainly wood scraps, plant stalks, sawdust, wood powder, and waste plastics, such as patents CN101992202A, CN101302734A, CN101985527A, CN1420812A, CN101367975A, CN101698749A, and CN101693784A. The promotion and application of wood-plastic composite materials can also solve the problem of environmental pollution caused by wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L27/06C08L23/06C08L23/08C08L23/12C08K13/02C08K3/26D21B1/06B29C43/02B29C43/58
Inventor 胡华宇黄祖强潘瑞坚张燕娟朱其虎覃宇奔陈明育黄爱民覃杏珍玉琼广梁露锋黄晓英
Owner GUANGXI UNIV
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