Double-layer plastic-wood composite material and preparation method thereof

A wood-plastic composite material and double-layer technology, which is applied in the manufacturing field of double-layer wood-plastic composite materials and double-layer wood-plastic composite materials, can solve the problems of insufficient recycling and reuse of waste plastic materials, shortage of wood resources, etc., and achieve significant environmental protection. Benefit, the effect of alleviating white pollution

Inactive Publication Date: 2009-12-23
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-layer plastic-wood composite material to solve the problems of increasing shortage of existing wood resources and insufficient recycling and reuse of waste wood, crop straw, and waste plastic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1, raw material preparation:

[0030] The raw materials used are dried first, and the moisture content of sawdust and high-grade pine wood powder is required to be no more than 3% after drying;

[0031] a. Inner layer core raw material: the main material weighs 60% of sawdust by weight percentage, 40% of waste polyethylene plastic, and the total is 100%; the maleic anhydride MA weighed in addition is 1.0% of the total weight of the main material, hard Zinc fatty acid is 0.5% of the total weight of the main material. First add 60% sawdust to 1.0% maleic anhydride MA, treat it in a mixer for 15 minutes, carry out surface treatment, and then process it into a 10-mesh mixed coarse powder; sort, clean, and broken;

[0032] b, outer material: the main material is 30% of 80 purpose high-grade pine wood powder weighed by weight percentage, and the new polyvinyl chloride plastic is 70%, 100% in total; the maleic anhydride MA weighed in addition is the total amount of main...

Embodiment 2

[0040] Step 1, raw material preparation:

[0041] Dry the raw materials first, and the moisture content of wheat straw powder or high-grade poplar wood powder should not exceed 3% after drying;

[0042] a. Inner layer core material: the main material is 75% of wheat straw powder and 25% of waste polypropylene plastic by weight percentage, and the total is 100%; the maleic anhydride MA weighed in addition is 1.5% of the total weight of the main material , Zinc stearate is 3.5% of the total weight of the main body material. Add 75% wheat straw powder to 1.5% maleic anhydride MA for surface treatment, and then process it into 30-mesh mixed coarse powder; sort, clean and crush 25% waste polypropylene plastic;

[0043] b, outer material: the main material is 50% of the high-grade poplar wood powder weighing 100 meshes by weight percentage, and the polypropylene plastic of new product is 50%, and the total is 100%; the maleic anhydride MA weighed in addition is the main material gr...

Embodiment 3

[0051] Step 1, raw material preparation:

[0052] Firstly, the raw materials used are dried, and the moisture content of cotton stalk powder or high-grade poplar wood powder is required to be no more than 3% after drying;

[0053] a. Inner layer core material: the main material is 70% of cotton stalk powder and 30% of waste polyvinyl chloride plastic, 100% in total; the other weighed polyethylene MAPE is 5.0% of the total weight of the main material , Zinc stearate is 2.5% of the total weight of the main body material. First add 70% cotton stalk powder to 5.0% polyethylene MAPE for surface treatment, and then process it into 20-mesh mixed coarse powder; sort, clean and crush 30% waste PVC plastic;

[0054] b. Outer layer raw materials: the main material weighs 40% of the 90-mesh high-grade poplar wood powder by weight percentage, and the new polypropylene plastic is 60%, and the total is 100%; in addition, the added polyethylene MAPE is weighed as 40% of the total weight of t...

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Abstract

The invention discloses a double-layer plastic-wood composite material and a manufacturing method thereof. The core body of the inner layer is composed of coarse wood powder or agricultural straw powder and waste plastics, and the coarse wood powder or agricultural straw powder is 60% by weight. %~75%, 25%~40% for waste plastics; the coupling agent added during compounding is 1%~5% of the total weight of the main material, and the lubricant is 0.5%~5% of the total weight of the main material; the outer layer is made of Pure wood powder and new plastic are compounded, and the pure wood powder is 30% to 50% by weight, and the new plastic is 50% to 70%; the coupling agent added during compounding is separately weighed as the total weight of the main material 1% to 5%, functional additives 1% to 5%, lubricants 0.5% to 5%, and the thickness of the outer layer is greater than or equal to 3mm. The manufacturing method of the present invention is implemented through the steps of raw material preparation, mixing and granulation, extrusion molding, shaping and cooling, drawing and cutting. The double-layer plastic-wood composite material of the invention has the advantages of wood and plastic properties.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a double-layer plastic-wood composite material and a manufacturing method of the double-layer plastic-wood composite material. Background technique [0002] With the continuous development of my country's modernization and the continuous improvement of people's living standards, the demand for timber is increasing day by day. The resulting over-harvesting has made vegetation resources increasingly tense and caused serious environmental problems. On the other hand, plastic products are widely used, but the waste recycling system is not perfect, and the "white pollution" caused by many people's lack of environmental awareness has become an urgent problem in environmental protection. [0003] In this context, wood-plastic composite materials came into being. Wood-plastic composite materials are made of wood powder and agricultural straw powder filled with thermoplastics (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/00B27N3/28B27N1/02
Inventor 赵麦群吕仁惠吕娟王秀春
Owner XIAN UNIV OF TECH
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