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Polyolefin wood-plastic composite and preparation method thereof

A wood-plastic composite material, polyolefin-based technology, applied in the field of polyolefin-based wood-plastic composite material and its preparation, can solve problems such as unrecognized compatibility, achieve low production cost, reduce environmental pollution, and simple process Effect

Inactive Publication Date: 2014-05-28
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, while improving 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 cornstarch, and the additives involved in patent ZL 201110189511.9, calcium sulfate and cornstarch and the plant fiber in this application are in the scientific classification belong 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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  • Polyolefin wood-plastic composite and preparation method thereof

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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, 1 part of antioxidant 1076, 1 part of antioxidant 2 parts of agent 330, 1 part of polyethylene wax, 2 parts of liquid paraffin, 20 parts of calcium carbonate.

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

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, 3 parts of antioxidant 1010, 4 parts of antioxidant 300, 9 parts of n-butyl stearate, 6 parts of oleamide, 10 parts of silicon dioxide .

[0028] Bamboo powder was cleaned of impurities, crushed, sieved, and vacuum-dried at 100 °C for 2 h. At the same time, the ethylene-vinyl alcohol copolymer was pulverized and dried in a vacuum oven at 90 °C for 8 h. After mixing the dried ethylene-vinyl alcohol copolymer powder and glycerin evenly, the dried bamboo powder was activated in a high mixer at 190 °C at 6000 r / min for 10 min to obtain surface-modified bamboo powder. pink. Then add polyvinyl chloride, composite heat stabilizer, octyl tridecyl phth...

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, antioxidant 2246 2 parts, 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 80 °C for 2 h. At the same time, the ethylene-vinyl alcohol copolymer was pulverized and dried in a vacuum oven at 91° C. for 8 hours. After mixing the dried ethylene-vinyl alcohol copolymer powder and glycerin evenly, the dried wheat straw was activated in a high-mixer at 175°C at 4500 r / min for 7 minutes to obtain the surface-modified wheat straw. stalk. Then add polypropylene, antioxidant CA, antioxidant 2246, monoglyceride stearate, organic silane, modified wheat straw and wollastonite to another high mixer and mix for another 5 minutes. Take out the compound,...

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Abstract

The invention discloses a polyolefin wood-plastic composite and a preparation method thereof. Polyolefin and plant fiber modified by EVOH (ethylene-vinyl alcohol copolymer) are taken as main raw materials, a plasticizer, a stabilizer, a lubricating agent and the like are added, and the environment-friendly wood-plastic composite with excellent mechanical property is prepared with a melt blending method commonly used during plastic processing. The wood-plastic composite can be used in conventional fields such as building materials, decorative materials, foam materials, boards, packaging materials, toys, automobile parts and the like, and the application range of the EVOH is enlarged.

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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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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