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Preparation process of high-strength wood-plastic composite board

A preparation process and composite board technology, which is applied in the field of preparation of high-strength wood-plastic composite boards, can solve the problems of poor flame retardancy and moisture resistance, insufficient mechanical strength, cumbersome preparation process, etc., and achieve good foaming effect, high mechanical strength, Reasonable effect

Active Publication Date: 2017-03-15
杨昆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While wood-plastic composites are developing vigorously, some obvious shortcomings have also been exposed, such as a large amount of waste of wood, insufficient mechanical strength, poor flame retardant and moisture resistance, high cost, and cumbersome preparation processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation technology of high-strength wood-plastic composite board comprises the following steps:

[0020] 1) Heat treatment of wood powder with a particle size of 20 mesh at 120°C to obtain dry wood powder with water content below 5wt%, then add the dry wood powder to the stirring reactor, and then add PVC, polypropylene resin, paraffin wax , chlorinated polyethylene and ACR resin are evenly added to the dry wood powder, the control temperature is 80°C, the stirring speed is 200rpm, the reaction time is 90min, and after natural cooling, the main material is obtained; the dry wood powder, PVC, polypropylene The mass ratio of resin, paraffin, chlorinated polyethylene and ACR resin is: 400:100:5:2:2:1;

[0021] 2) Crushing corn stalks with a crusher, mixing them with peanut shells at a mass ratio of 2:1, and crushing them into 200-mesh powder to obtain excipient A;

[0022] 3) Mix diatomaceous earth and soybean meal at a mass ratio of 1:1, then soak in 2M hydrochlo...

Embodiment 2

[0027] The preparation technology of high-strength wood-plastic composite board comprises the following steps:

[0028] 1) Heat treatment of wood powder with a particle size of 50 mesh at 150°C to obtain dry wood powder with water content below 5wt%, then add the dry wood powder to the stirring reactor, and then add PVC, polypropylene resin, paraffin wax , chlorinated polyethylene and ACR resin are evenly added to the dry wood powder, the temperature is controlled at 80°C, the stirring speed is 200rpm, the reaction is 90min, and after natural cooling, the main material is obtained; the dry wood powder, PVC, polypropylene resin, The mass ratio of paraffin, chlorinated polyethylene and ACR resin is: 1000:200:10:3:3:2;

[0029] 2) Crushing corn stalks with a crusher, then mixing them with peanut shells at a mass ratio of 2:1, and crushing them into 200-mesh powder to obtain excipient A;

[0030] 3) Mix diatomaceous earth and soybean meal at a mass ratio of 1:1, then soak in 2M h...

Embodiment 3

[0035] The preparation technology of high-strength wood-plastic composite board comprises the following steps:

[0036]1) Heat treatment of wood powder with a particle size of 40 mesh at 1350°C to obtain dry wood powder with a moisture content below 5wt%, then add the dry wood powder to the stirring reactor, and then add PVC, polypropylene resin, paraffin wax , chlorinated polyethylene and ACR resin are evenly added to the wood powder, the temperature is controlled at 80°C, the stirring speed is 200rpm, and the reaction is carried out for 90 minutes. After natural cooling, the main material is obtained; the dry wood powder, PVC, polypropylene resin, The mass ratio of paraffin, chlorinated polyethylene and ACR resin is: 700:150:8:3:2:1;

[0037] 2) Sorghum stalks were crushed with a crusher, then mixed with peanut shells at a mass ratio of 2:1, and crushed into 200-mesh powder to obtain excipient A;

[0038] 3) Mix diatomaceous earth and soybean meal at a mass ratio of 1:1, th...

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Abstract

The invention belongs to the field of composite material preparation and discloses a preparation process of a high-strength wood-plastic composite board. The preparation process includes the steps of 1), preparing main materials; 2), breaking and crushing; 3), soaking, centrifuging and grinding; 4), calcining and grinding; 5), melting, shaping, cutting, sanding and performing surface pressing. The preparation process has the advantages that the process is simple, convenient and feasible and low in raw material cost, and the prepared wood-plastic composite board is high in mechanical strength, flame-retardant, damp-proof, environmentally friendly, free of pollution and the like.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a preparation process of a high-strength wood-plastic composite board. Background technique [0002] Wood-plastic composites (Wood-Plastic Composites, WPC) 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, etc. Wood powder, rice husk, straw and other waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce plates or profiles, which are 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. [0003] Wood-plastic panels have been widely recognized and appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L27/06C08L23/12C08L91/06C08L23/28C08L33/04C08K13/04C08K3/26C08K3/34C08K3/22C08K7/14
CPCC08L97/02C08L2205/025C08L2205/035C08L2205/16C08L27/06C08L23/12C08L91/06C08L23/286C08L33/04C08K13/04C08K3/26C08K3/346C08K2003/2224C08K7/14
Inventor 李国军
Owner 杨昆
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