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Modified composite material of woods and plastics as well as its usage and manufacturing method

A wood-plastic composite material and composite material technology, which is applied in the field of modified wood-plastic composite materials, can solve the problems of low bonding strength of the interface between wood powder and plastic, and achieve low mechanical strength, wide application range and good weather resistance. Effect

Inactive Publication Date: 2003-10-01
BEI JING NEW BUILDING MATERIALGRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also a patent "wooden plastic" (application number 94113968.9), which is produced by molding or injection molding, but fails to solve the problem of low bonding strength of the phase interface between wood powder and plastic. In short, the industry has always expected good mechanical properties, appearance and The emergence of wood-plastic products with processing properties closer to wood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Remove the dust from the waste branches, grind them into wood powder with a fineness of 60 mesh to 100 mesh through a mill, dry at 110°C to 150°C, and have a moisture content of ≤2%; then mix with 4% styrene and methyl acrylate (weight Ratio 1: 2) together, mixed in a high-speed mixer for 8 minutes to discharge, and become modified wood flour.

[0032] Take PVC plastic and recycled PVC plastic with a weight ratio of 1:1, and the recycled PVC plastic is cleaned, crushed, and dried to make pellets with a moisture content of ≤2% and a particle size of less than 12mm.

[0033] The raw material weight ratio is: (based on the total weight of the product)

[0034] Wood flour: 59%.

[0035] Styrene and methyl acrylate mixed monomer: 4% (1:2 by weight)

[0036] PVC plastic: 26%

[0037] Lead dibasic phosphite: 1.0%

[0038] Tribasic lead sulfate: 0.5%

[0039] Dibasic lead acetate stearate; 0.1%

[0040] Lead stearate: 0.3%

[0041] Calcium Stearate: 0.6%

[0042] CPE: 3...

Embodiment 2

[0051] Clean up the dried moso bamboo, crush it to a particle size below 30mm, grind it into moso bamboo powder with a fineness of 60 mesh to 100 mesh through a mill, and dry it at 110°C to 150°C to make the water content ≤ 2%. Then add styrene and acrylic acid The methyl ester mixture was mixed in a high-speed mixer for 15 minutes and discharged to obtain modified moso bamboo powder.

[0052] The plastic component adopts PP plastic resin.

[0053] The raw material weight ratio is: (based on the total weight of the product)

[0054] Moso bamboo powder: 66%;

[0055] Styrene and methyl acrylate mixture (1:2 by weight): 5%

[0056] Random PP new material: 23%

[0057] Calcium Stearate: 0.6%

[0058] Calcium Carbonate: 2.5%

[0059] Paraffin: 0.8%

[0060] Put the raw materials after surface treatment, plastic components and other additives into the high-speed mixer at a speed of 800-1200rpm, mix at high speed for 18 minutes, discharge to the low-speed cold mixer, and pour co...

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Abstract

A modified wood-plastics composition is prepared from wood flour, plastic, assistant, and grafting agent through graft modifying of wood flour and plastics, and continuous extruding out. Its advantage is high tension strength, bending strength and impact strength.

Description

technical field [0001] The present invention relates to a modified wood-plastic composite material, more specifically to a modified composite material for sound insulation, heat insulation, good sealing, high strength, and good weather resistance. The present invention also relates to the use and application of the above composite material. The method of manufacture of the material. Background technique [0002] In order to make full use of resources as an effective means of protecting the environment and reducing energy consumption, the idea of ​​replacing wood and steel with plastic has been put forward as early as the 1970s. However, 30 years later, the application of wood-plastic products is still minimal, and it is rarely seen in real life. Even in some developed countries, the material is only at the beginning and initial stage in the production of wood-plastic doors and windows, railway sleepers, building templates, car door guards, car inner linings and decoration. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02
Inventor 韩修智赵永生许志刚米春艳
Owner BEI JING NEW BUILDING MATERIALGRP
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