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A kind of polyolefin-based wood-plastic composite material and preparation method thereof

A wood-plastic composite material and polyolefin-based technology, applied in the field of polyolefin-based wood-plastic composite materials and their preparation, can solve problems such as unrecognized compatibility effects, achieve low production costs, reduce environmental pollution, and high production efficiency Effect

Inactive Publication Date: 2016-03-30
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent modifies the surface of calcium sulfate by adding stearic acid to improve the compatibility of calcium sulfate, corn starch and ethylene-vinyl alcohol copolymer, and at the same time improve the fluidity of the melt and the surface smoothness of the composite material. It can be seen that the patentee did not recognize the compatibility effect of ethylene-vinyl alcohol copolymer on calcium sulfate and corn starch, and the additives involved in patent ZL201110189511. The classification belongs to two completely different types of substances, that is, the patent has no enlightening effect on the present invention

Method used

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  • A kind of polyolefin-based wood-plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The raw material components are by weight: 100 parts of high-density polyethylene, 0.1 part of ethylene-vinyl alcohol copolymer (the molar content of ethylene is 70%), 0.5 parts of glycerin, 10 parts of wood flour, 10761 parts of antioxidant, antioxidant 3302 parts, 1 part of polyethylene wax, 2 parts of liquid paraffin, 20 parts of calcium carbonate.

[0024] The wood powder was cleaned of impurities, crushed, sieved, and vacuum-dried for 2 hours at a temperature of 80°C. At the same time, the ethylene-vinyl alcohol copolymer was pulverized and dried in a vacuum oven at 92° C. for 8 hours. After uniformly mixing the dried ethylene-vinyl alcohol copolymer powder with glycerin, the dried wood powder was activated in a high mixer at 150°C at 3000r / min for 5 minutes to obtain surface-modified wood powder. Then add high-density polyethylene, antioxidant 1076, antioxidant 330, polyethylene wax, liquid paraffin, modified wood powder and calcium carbonate into another high-mi...

Embodiment 2

[0027] The raw material components are by weight: 100 parts of polyvinyl chloride, 3.6 parts of ethylene-vinyl alcohol copolymer (the molar content of ethylene is 30%), 18 parts of glycerin, 60 parts of bamboo powder, 5 parts of composite heat stabilizer, phthalate 5 parts of octyl tridecyl formate, 5 parts of acetyl tributyl citrate, 10103 parts of antioxidant, 3004 parts of antioxidant, 9 parts of n-butyl stearate, 6 parts of oleamide, and 10 parts of silicon dioxide.

[0028] The bamboo powder is cleaned of impurities, pulverized, sieved, and vacuum-dried at a temperature of 100° C. for 2 hours. At the same time, the ethylene-vinyl alcohol copolymer was pulverized and dried in a vacuum oven at 90° C. for 8 hours. After the dried ethylene-vinyl alcohol copolymer powder and glycerin are uniformly mixed, the dried bamboo powder is activated in a high mixer at 190° C. at 6000 r / min for 10 minutes to obtain surface-modified bamboo powder. Then add polyvinyl chloride, composite ...

Embodiment 3

[0031] Raw material components by weight: 100 parts of polypropylene, 2.4 parts of ethylene-vinyl alcohol copolymer (ethylene molar content is 44%), 12 parts of glycerin, 40 parts of straw, 3 parts of antioxidant CA, 22462 parts of antioxidant , 3 parts of monoglyceride stearate, 6 parts of organosilane, 10 parts of wollastonite.

[0032] The wheat straw was cleaned of impurities, crushed, sieved, and vacuum-dried at a temperature of 80° C. for 2 hours. At the same time, the ethylene-vinyl alcohol copolymer was pulverized and dried in a vacuum oven at 91° C. for 8 hours. After uniformly mixing the dried ethylene-vinyl alcohol copolymer powder with glycerin, the dried wheat straw was activated in a high mixer at 175° C. at 4500 r / min for 7 minutes to obtain surface-modified wheat straw. Then add polypropylene, antioxidant CA, antioxidant 2246, monoglyceride stearate, organosilane, modified wheat straw and wollastonite to another high mixer and mix for another 5 minutes. Take ...

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Abstract

The invention discloses a polyolefin-based wood-plastic composite material and a preparation method thereof. Plant fibers modified by polyolefin and ethylene-vinyl alcohol copolymer (EVOH) are used as main raw materials, and plasticizers, stabilizers and lubricants are added. prepared wood-plastic composites with good mechanical properties and environmental friendliness through the general melt blending method in plastic processing. The wood-plastic composite material of the present invention can be used in conventional fields such as building materials, decorative materials, foaming materials, boards, packaging materials, toys, auto parts, etc., which broadens the application range of the ethylene-vinyl alcohol copolymer.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and in particular relates to a polyolefin-based wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a new type of material formed by compounding plant fiber as the main component and thermoplastic plastic through certain molding and processing methods. It has the dual characteristics of natural fiber and plastic, and can make up for the shortcomings of both and overcome wood It has low strength and large variability and other limitations in use. It has the characteristics of low price, good mechanical properties, acid and alkali corrosion resistance, and recyclability. It can be used instead of wood in many occasions. Its development and promotion will effectively relieve my country's petroleum Contradictions with the shortage of forest resource supply, reduce environmental pollution caused by plastic and agri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08L29/04C08L97/02C08L23/12C08L27/06C08L25/06C08L31/04C08K13/02C08K5/053
CPCC08L23/06C08L23/0853C08L23/12C08L25/06C08L27/06C08L2205/025C08L2205/03C08L2205/035C08L23/0846C08L97/02C08K13/02C08K2003/265C08K5/053C08L29/04C08K5/12C08K5/11C08K5/20C08K3/36C08K5/103C08K3/34
Inventor 朱德钦生瑜陈星生政天童庆松
Owner FUJIAN NORMAL UNIV
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