Preparation method for high-strength wood-plastic composite material

A wood-plastic composite material, high-strength technology, applied in the field of wood-plastic composite material preparation, can solve the problems of voids and cracks, weak impact resistance, etc., and achieve the effects of simple preparation steps, improved impact resistance, and strong pertinence

Inactive Publication Date: 2016-12-07
周荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation steps of the present invention are simple, and the strength of the obtained material is high. The wood-plastic composite material is prepared by making full use of ca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] First weigh 300g of bamboo chips, put them in a drying oven at 100°C and dry them to constant weight, put them in a pulverizer and grind them, pass through a 100-mesh sieve, spread the sieved bamboo powder on a square plate, and put it in a carbonization kiln , heat up to 100°C at a rate of 10°C / min, keep the temperature for 30min, continue to heat up to 200°C, keep the temperature for 3h, cool down to room temperature naturally, take out the bamboo powder to obtain carbonized bamboo powder, and set aside; then use a molar ratio of 2:1 : 3, take allyl polyoxyethylene polyoxypropylene epoxy ether, silane coupling agent KH-550 and deionized water, add in the reaction kettle, under 80 ℃ constant temperature water bath, stir with 300r / min 3h, let it stand to cool to room temperature, add acetone with 20% volume of the mixed solution, transfer it to a centrifuge for centrifugation, take the upper solution and distill it under reduced pressure to obtain a macromolecular coupli...

example 2

[0018] First weigh 400g of bamboo chips, place them in a drying oven at 103°C and dry them to constant weight, put them in a pulverizer and grind them, pass through a 100-mesh sieve, spread the sieved bamboo powder on a square plate, and place it in a carbonization kiln , heat up to 103°C at a rate of 10°C / min, keep the temperature for 35min, continue to heat up to 205°C, keep the temperature for 4h, cool down to room temperature naturally, take out the bamboo powder to obtain carbonized bamboo powder, and set aside; then use a molar ratio of 2:1 : 3, take allyl polyoxyethylene polyoxypropylene epoxy ether, silane coupling agent KH-550 and deionized water, add in the reaction kettle, under 83 ℃ constant temperature water bath, stir with 350r / min 4h, let it stand and cool to room temperature, add acetone with 20% volume of the mixed solution, transfer it to a centrifuge for centrifugation, take the upper solution and distill it under reduced pressure to obtain a macromolecular c...

example 3

[0021] First weigh 500g of bamboo chips, place them in a drying oven at 105°C and dry them to constant weight, put them in a pulverizer and grind them, pass through a 100-mesh sieve, spread the sieved bamboo powder on a square plate, and place it in a carbonization kiln , heat up to 105°C at a rate of 10°C / min, keep the temperature for 40min, continue to heat up to 210°C, keep the temperature for 4h, cool down to room temperature naturally, take out the bamboo powder to obtain carbonized bamboo powder, and set aside; then use a molar ratio of 2:1 : 3, Weigh allyl polyoxyethylene polyoxypropylene epoxy ether, silane coupling agent KH-550 and deionized water, add to the reaction kettle, and stir at 400r / min under 85°C constant temperature water bath 4h, let it stand to cool to room temperature, add acetone with 20% volume of the mixed solution, transfer it to a centrifuge for centrifugation, take the upper solution and distill it under reduced pressure to obtain a macromolecular ...

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Abstract

The invention discloses a preparation method for a high-strength wood-plastic composite material, belonging to the technical field of preparation of wood-plastic composite materials. The preparation method provided by the invention comprises the following steps: taking bamboo sheets and carrying out drying to a constant weight, carrying out crushing and sieving, then carrying out secondary carbonization so as to prepare carbonized bamboo powder for subsequent usage, then taking a silane coupling agent KH-550 and the like so as to prepare a macromolecular coupling agent, then mixing the macromolecular coupling agent with deionized water and glacial acetic acid, adding an ethylene-vinyl acetate copolymer emulsion diluent and the like so as to prepare an impregnating agent, soaking glass fiber in the impregnating agent, taking the soaked glass fiber out of the impregnating agent and carrying out drying, then mixing the dried glass fiber with the prepared carbonized bamboo powder and the like, and carrying out extrusion granulating so as to prepare the high-strength wood-plastic composite material. The invention has the following beneficial effects: the preparation method has simple preparation steps; the prepared material has high strength; the carbonized bamboo powder, the impregnating agent soaked glass fiber and resin are fully utilized to prepare the wood-plastic composite material; pertinence is strong; and the problems of weak impact resistance and easy generation of gaps and cracks are effectively solved.

Description

technical field [0001] The invention relates to a preparation method of high-strength wood-plastic composite material, which belongs to the technical field of wood-plastic composite material preparation. Background technique [0002] Wood-plastic composite material is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride instead of the usual resin adhesive, and more than 50% of wood powder, rice husk, straw, etc. Waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce panels or profiles. Mainly used in building materials, furniture, logistics packaging and other industries. The board formed by hot extrusion after mixing plastic and wood powder in a certain proportion is called extruded wood-plastic composite board. The composite material has low strength, ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L31/04C08K9/06C08K9/04C08K3/04C08K7/14
CPCC08L27/06C08L31/04C08K9/06C08K9/08C08K3/04C08K7/14
Inventor 周荣王龙盛海丰
Owner 周荣
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