Wood-plastic material and its preparation method

A technology for wood-plastic materials and waste plastics, which is applied in the production of wood-plastic materials, components of wood-plastic materials, and the production process of materials to achieve the effects of increased strength, good environmental and social benefits, and improved strength and toughness

Inactive Publication Date: 2007-09-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report of using waste plastics, waste chemical fibers, and waste wood screened from mineralized garbage as raw materials to make wood-plastic materials

Method used

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  • Wood-plastic material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0019] Please refer to attached picture 1.

[0020] Remove the dust from the plastic (LDPE and PP mass ratio of 5:2) and chemical fiber (acrylic and polyester mass ratio of 1:1) screened in the mineralized garbage, and use a plastic crusher to crush it to 4-6mm. After cleaning Dry until the moisture content is less than 5%. Crush the waste wood blocks in the mineralized garbage to less than 6mm, and use a mill to grind to a particle size of less than 20 mesh.

[0021] The weight ratio of raw materials is (based on the total mass of the product): waste plastics: 25%; wood flour: 55.5%; waste chemical fibers: 15%; silane coupling agent (KH570): 1.5%; Butyl p-cresol: 2.0%; Stearic acid: 0.5%; Paraffin: 1.5%.

[0022] Put the chemical fibers and plastics into the high-speed mixer, and mix briefly at a low speed of 700rpm for 1 minute, then add 0.5% silane coupling agent and mix at a high speed of 1400rpm for 4-6 minutes; after stopping, add dried wood powder and 2-6 di tert-but...

Embodiment 2

[0025] Remove the dust from the plastic (LDPE material) and chemical fiber (acrylic fiber) in the mineralized garbage, use a plastic crusher to crush it to 4-6mm, wash it and dry it until the moisture content is less than 5%. Crush the waste wood blocks in the mineralized garbage to less than 6mm, and use a mill to grind to a particle size of less than 20 mesh.

[0026] The weight ratio of raw materials is (based on the total mass of the product): waste plastics: 45%; wood powder: 50%; waste chemical fibers: 4.0%; silane coupling agent (KH570): 0.2%; Butyl p-cresol: 0.5%; Stearic acid: 0.3%; Paraffin: 0.0%.

[0027]Put the chemical fibers and plastics into the high-speed mixer, and mix briefly at a low speed of 700rpm for 1 minute, then add 0.5% silane coupling agent and mix at a high speed of 1400rpm for 4-6 minutes; after stopping, add dried wood powder and 2-6 di tert-butyl-p-cresol, stearic acid, paraffin, and then mix at high speed for 20-25 minutes. Use a granulator to...

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Abstract

A wood-plastic material and its manufacturing method relates to the preparation from waste plastics of mineralization garbage, and further its manufacturing method. The quality percentage composition of this material is waste plastic: wood powder: waste chemical fiber: silane coupling agent: 2-6 di-Butylated Hydroxytoluene: stearic acid: paraffin = (25%~45%): (50%~55.5%): (4%~15%): (0.2%~1.0%): (0.5%~2.0%): (0.3%~0.5%): (0~1.0 %). It firstly breaks, washes and dries the waste plastics, chemical fibers and wood flour, then mixes them for granulation, extrudes for molding. The material has good resistance of corrosion and weather, and its performance and characteristics are close to the wood.

Description

technical field [0001] The invention relates to components of a wood-plastic material, and further relates to a production process of the material, specifically, a method for producing wood-plastic materials using waste plastics, waste chemical fibers, and waste wood in mineralized garbage as main raw materials. It belongs to the field of solid waste recycling. Background technique [0002] The global forest resources are depleting day by day, the supply of wood is decreasing, but the demand is increasing. Since the 1970s, polymer material scientists and industrial circles have been making unremitting efforts to carry out research on "replacing wood with plastic". and development work. Wood-plastic composites have attracted great attention from the scientific and industrial circles. Through modification, wood-plastic composites can make full use of the respective advantages of plastics and wood and eliminate many of their inherent shortcomings-not o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08K5/54C08J5/04C08L101/00C08L91/06C08K5/09C08K5/13
Inventor 赵由才倪静马建立牛东杰柴晓利
Owner TONGJI UNIV
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