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Preparation process of wood-rubber functional environment-friendly composite material

A composite material and preparation technology, which is applied to wood processing appliances, flat products, household components, etc., can solve problems such as poor dimensional stability, low density, and easy hydrolysis, and achieve good economic and environmental benefits

Inactive Publication Date: 2009-10-07
赵君 +5
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Problems solved by technology

[0002] Wood has the characteristics of low density, high specific strength and stiffness, low price, and easy processing, but it has the disadvantages of easy hydrolysis, poor dimensional stability, easy corrosion and insects

Method used

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  • Preparation process of wood-rubber functional environment-friendly composite material

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Embodiment Construction

[0019] The manufacturing process of wood-rubber functional environmental protection composite material of the present invention comprises the following steps:

[0020] a. Preparation and drying of wood shavings. Use a wood planer to plan the logs into shavings. The geometry of the shavings is needle-shaped wood shavings for general industrial production: length 3mm-25mm; width 1.0-2.5mm; thickness 0.2-0.8mm, and then use conventional drying to dry the shavings. Dried to a moisture content of 6%-9%.

[0021] b. Mix wood shavings and urea-formaldehyde glue (UF) evenly. The dried wood shavings are mixed evenly with 10% urea-formaldehyde glue (UF).

[0022] c. Preparation and drying of rubber granules. The raw material of rubber granules is taken from ordinary waste automobile tires, and the reinforcing ribs in the waste tires are removed by special machinery to make rubber granules of 1-7mm.

[0023] d. Mix rubber particles with isocyanate (PMDI) evenly. The rubber particles...

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Abstract

The invention relates to a preparation process of a wood-rubber functional environment-friendly composite material, belonging to the technical field of wood composite material production. The preparation process of the wood-rubber functional environment-friendly composite material comprises the following steps: preparing and drying wood wool, mixing the wood wool with urea-formaldehyde glue (UF), preparing and drying rubber grains, mixing the rubber grains with isocyanate (PMDI), mixing the wood wool with the rubber grains, adding parting agent for pavement, pre-pressing, hot pressing, and the like. The preparation process of the invention also include the following parameters: the wood wool has a length of 3-25 mm, a width of 1.0-2.5 mm and a thickness of 0.2-0.8 mm; the water content of the dried wood wool is 6-9 percent; the isocyanate (PMDI) is 6 percent; the urea-formaldehyde glue (UF) is 10 percent; the ratio of the wood wool and the rubber grains (W / R) is 60 / 40; the rubber grain size is 5mm; the hot pressing temperature is 170 DEG C; the hot pressing time is 300s; and the density of a plate bland is 1000g cm.

Description

technical field [0001] The invention relates to a preparation process of a wood-rubber functional environment-friendly composite material, which belongs to the technical field of wood composite material manufacturing. Background technique [0002] Wood has the characteristics of low density, high specific strength and stiffness, low price, and easy processing, but it has the disadvantages of easy hydrolysis, poor dimensional stability, easy corrosion and insects. Rubber is a highly air-tight elastomer, hydrophobic, anti-corrosion and insect-proof, and has high dimensional stability. In addition to the characteristics of general rubber, rubber for tires also has the characteristics of aging resistance, wear resistance, and low glass transition temperature. It is a polymer material. Using PMDI-UF hybrid glue to make them into composite materials can make up for each other's deficiencies and jointly exert their advantages. [0003] The wood and tire rubber are prepared into f...

Claims

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Application Information

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IPC IPC(8): B27N3/02
Inventor 赵君常建民王向明郑凯张英杰司慧
Owner 赵君
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