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Preparation method of plastic wood composite material

A wood-plastic composite material and plastic technology, applied in the field of short-process composite material manufacturing process, can solve the problems of difficult to form a smooth surface, poor extrusion process, high viscosity, etc., and achieve improved impact resistance, good molding and processing performance, Strong wood texture

Inactive Publication Date: 2006-06-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the existing plastic-wood composite technology has the following problems: the viscosity of the plastic-wood melt extrusion system is high, the extrusion process is poor, the energy consumption is high, and it is difficult to form a smooth surface
The mechanical properties, heat resistance and weather resistance of existing plastic-wood composite materials need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 2500-mesh ultrafine talc powder is vigorously stirred in a high-speed mixer at 100°C at 3000 rpm, and silane coupling agent KH550 accounting for 1% of the weight of the talc powder is added, and the material is stirred at high speed for 10 minutes to obtain coupled talc pink.

[0021] 100 kg of 100-mesh cotton stalk powder, stir vigorously at 1000 rpm in a high-speed mixer at 100°C, add titanate coupling agent NDZ102 accounting for 1% of the weight of cotton stalk powder, and stir at high speed for 15 minutes to discharge. Prepared coupled wood flour.

[0022] After mixing 100 kilograms of coupled wood powder prepared above and 30 kilograms of coupled superfine talcum powder, ball mill with zirconium balls (20 kilograms of zirconium balls with a diameter of 5-10 mm) in a ball mill at a speed of 40 rev / min. Get composite wood flour.

[0023] 100 kilograms of recycled polyethylene, 120 kilograms of composite wood flour prepared above and 15 kilograms of auxiliary agents...

Embodiment 2

[0025] 1250-mesh ultrafine talc powder is vigorously stirred in a high-speed mixer at 90°C at 2000 rpm, and silane coupling agent KH560 accounting for 2% by weight of the talc powder is added, and the material is stirred at high speed for 25 minutes to obtain coupled talc pink.

[0026] 100 kg of 110-mesh rice bran powder was vigorously stirred in a high-speed mixer at 110°C at 2000 rpm, and a titanate coupling agent NDZ201 accounting for 1% of the weight of the rice bran powder was added, and the material was discharged after high-speed stirring for 15 minutes to obtain Coupled wood flour.

[0027] After mixing 100 kilograms of coupled wood flour prepared above and 20 kilograms of coupled superfine talcum powder, ball mill with iron balls (20 kilograms of iron balls with a diameter of 5-10 mm) in a ball mill at a speed of 50 rpm, and after 3 hours, Get composite wood flour.

[0028] 100 kilograms of recycled polyethylene, 120 kilograms of composite wood flour prepared above...

Embodiment 3

[0030] 2500-mesh ultrafine illite powder is vigorously stirred in a high-speed mixer at 100°C at 3000 rpm, and silane coupling agent KH570 accounting for 1% of the weight of talc powder is added, and the material is discharged at high speed for 15 minutes to obtain coupled illite stone dust.

[0031] 100 kg of 120-mesh wood processing scrap powder, stirred vigorously at 1000 rpm in a high-speed mixer at 100°C, and added titanate coupling agent NDZ210 accounting for 1% of the weight of wood processing scrap powder, and stirred at high speed for 15 minutes. material to obtain coupled wood flour.

[0032] After mixing 100 kilograms of coupled wood powder prepared above and 30 kilograms of coupled ultrafine illite powder, ball mill with zirconium balls (20 kilograms of zirconium balls with a diameter of 5-10 mm) in a ball mill at a speed of 80 rpm, and after 1.5 hours, Get composite wood flour.

[0033] 100 kilograms of recycled polyethylene, 110 kilograms of composite wood flou...

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Abstract

The present invention relates to a plastics wood composite material and its preparation method. Said method includes the following steps: firstly, pulverizing laminate structure mineral, adding coupling agent while stirring to obtain coupled laminate structure mineral powder; adding coupling agent while stirring wood powder to obtain coupled wood powder; mixing coupled wood powder and coupled laminate structure mineral powder to obtain composite wood powder; mixing the obtained composite wood powder, plastics and adjuvant; then extruding by using extruder so as to obtain the invented plastics wood composite special-purpose material.

Description

technical field [0001] The invention relates to a method for preparing wood-plastic composite materials, which belongs to the technical field of short-flow composite material manufacturing techniques. Background technique [0002] Wood-plastic composites refer to new green and environmentally friendly materials made of wood fibers and thermoplastics (including recycled plastics) through mixing and processing, also known as wood-plastic composites and natural fiber composites. [0003] my country's forest coverage rate is low, and over-exploitation has brought about increasing desertification of vegetation and sandstorms. The current utilization rate of forest harvesting and comprehensive utilization of wood is low. Only by strengthening the reuse of existing resources and developing wood substitutes can the trend of sharp decline of forest resources be better curbed. On the one hand, it is necessary to make full use of the "three leftovers" in wood processing: harvesting re...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08K5/14C08K9/00C08L23/28
Inventor 盖国胜郝向阳杨玉芬蔡振芳
Owner TSINGHUA UNIV
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