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Composition for producing synthetic timber and its prepn process

The technology of a composition and wood powder is applied in the field of compositions for producing synthetic wood, and can solve the problems of inability to plan, saw, damage the surface wood grain decoration, etc., and achieve the effects of saving manpower, long shelf life and simple equipment requirements.

Inactive Publication Date: 2003-07-30
常怀春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some preparation methods of synthetic wood are disclosed in the prior art (such as US.6,066,367 and US.5,869,138), but there are many defects in these methods, such as the imitation wood material of production, when it is processed or the surface is damaged, the surface will be damaged. Wood grain decoration, and cannot be planed, sawed, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0011] The preparation method of the pellet composition of the present invention comprises the following steps: firstly, any one of PVC resin and wood powder, fruit shell powder, crop stalk powder or waste paper powder or their mixture is put into the hot mixing machine as the first feeding. Mix uniformly in the machine at low speed at 50°C; then put the stabilizer, internal lubricant, filler, and colorant into the heat mixer as the second feeding, and mix uniformly at 100-110°C at high speed; then put the impact modified Agents, processing aids, foaming agents, and external lubricants are put into the heat mixer as the third feeding, and mixed evenly at a high speed of 110-125°C. Put the hot-mixed raw materials into the cold mixer and lower the temperature to below 40°C to obtain the powder composition. The apparent density of the raw materials after thermal mixing increases, and some parts or edges of the materials have become transparent or translucent, that is, partially m...

Embodiment 1

[0016] 10 kg of PVC, 13 kg of wood powder (average particle size 140 mesh), 0.9 kg of CPE, 0.3 kg of ACR, 0.3 kg of tribasic lead sulfate, 0.2 kg of dibasic lead phosphite, 0.2 kg of lead stearate, hard 0.1 kg of barium stearate, 0.5 kg of calcium stearate, 0.1 kg of paraffin, 0.3 kg of azodicarbonamide, 1 kg of calcium carbonate, and 0.03 kg of sunfast yellow were prepared into granular or powder compositions according to the aforementioned preparation method.

Embodiment 2

[0018] 10 kg of PVC, 14 kg of wood powder (average particle size 140 mesh), 0.6 kg of ABS, 0.1 kg of ACR, 0.2 kg of dibutyltin mercaptide, 0.1 kg of calcium stearate, 0.1 kg of PE wax, azodicarbonamide 0.2 kg, 0.1 kg of sodium bicarbonate, 0.5 kg of calcium carbonate, 0.04 kg of medium chrome yellow, and 0.004 kg of red, made into granular or powdered compositions according to the aforementioned preparation method.

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Abstract

A composition for producing synthetic timber includes polyvinyl chloride resin; wood dust, nut shell powder, crop straw powder, waste paper powder or their mixture; and at least one of chlorinated polyethylene, acrylonitrile-butadiene-styrene polymer and methyl methacrylate-butadiene-styrene polymer as impact modifier. The materials in certain weight ratio are produced into granulated material through mixing, extrusion and pelletizing; or produced into powdered material through thrice mixing. The said composition can be used for producing synthetic timber with the grains and other characteristics simmilar to natural timber for use in building.

Description

Technical field [0001] The present invention relates to a composition for the manufacture of synthetic wood and a method for its preparation. Background technique [0002] In order to meet the needs of human production and life, people cut down a lot of wood, causing serious damage to forest resources and great damage to the natural ecological environment. For the benefit of future generations, people are developing various materials to replace natural wood to reduce human dependence on natural wood. However, due to the existing natural wood substitutes, there are many defects, such as not having the texture and texture of natural wood, and cannot be processed according to natural wood, so it cannot meet the consumer demand that people favor wood products. As an improvement, people began to develop wood-like plastics, so-called synthetic wood. Some preparation methods of synthetic wood are disclosed in the prior art (such as US.6,066,367 and US.5,869,138), but there are ma...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02
Inventor 常怀春
Owner 常怀春
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