Thermal polymerization monomer coating modified wood-plastic reinforced composite material and preparation method thereof

A technology of reinforced composite materials and thermal polymerization, which is applied in the field of thermally polymerized monomer coating modified wood-plastic reinforced composite materials and its preparation, can solve the problems of secondary environmental pollution, inability to adapt to large-scale industrial production, etc., and achieves improved mechanical properties. performance, the effect of increasing the environmental burden

Inactive Publication Date: 2019-07-05
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only suitable for small-scale exploratory research in the laboratory, and cannot meet the needs of large-scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The composition and weight percentage of the thermally polymerized monomer-coated modified wood-plastic reinforced composite material are: coffee shell powder 40%, polyethylene 30%, maleic anhydride grafted polyethylene 15%, methacrylic acid Methyl ester 5%, calcium stearate 10%.

[0023] The preparation method of the above-mentioned wood-plastic reinforced composite material is as follows:

[0024] 1. Put the coffee shell powder in the high-speed mixer, start the high-speed mixer to spray the methyl methacrylate solution (dissolved in acetone) with a mass concentration of 80% on the surface of the coffee shell powder in a fine mist, and then put the processed The coffee shell powder is mixed evenly in the high mixer (the mixing temperature is 60°C, and the time is 20min);

[0025] 2. Add polyethylene, maleic anhydride grafted polyethylene, and calcium stearate into the high mixer and mix with the mixture in step 1 for 20 minutes. During the mixing process, ...

Embodiment 2

[0029] Example 2: The composition and weight percentage of the thermally polymerized monomer coated modified wood-plastic reinforced composite material are: eucalyptus wood powder 50%, polyethylene 20%, maleic anhydride grafted polyethylene 10%, methacrylic acid Methyl ester 10%, calcium stearate 10%.

[0030] The preparation method of the above-mentioned wood-plastic reinforced composite material is as follows:

[0031] 1. Put the eucalyptus wood powder in the high-speed mixer, start the high-speed mixer to spray the methyl methacrylate solution (dissolved in ethanol) with a mass concentration of 60% on the surface of the eucalyptus wood powder in a fine mist, and then put the treated Eucalyptus powder is mixed evenly in a high mixer (mixing temperature is 75°C, time is 15min);

[0032] 2. Add polyethylene, maleic anhydride grafted polyethylene, and calcium stearate into the high mixer and mix with the mixture in step 1 for 20 minutes. During the mixing process, the temperat...

Embodiment 3

[0036] Embodiment 3: The compositions and weight percentages of this thermally polymerized monomer coating modified wood-plastic reinforced composite material are: bamboo powder 60%, polypropylene 20%, maleic anhydride grafted polypropylene 5%, methacrylic acid butyl Ester 5%, calcium stearate 10%.

[0037] The preparation method of the above-mentioned wood-plastic reinforced composite material is as follows:

[0038] 1. Bamboo powder is placed in the high-speed mixer, and the high-speed mixer is started to spray the butyl methacrylate solution (dissolved in ether) with a mass concentration of 90% on the surface of the bamboo powder in a fine mist, and then the treated bamboo powder Mix evenly in a high mixer (mixing temperature is 70°C, time is 15min);

[0039] 2. Add polypropylene, maleic anhydride grafted polypropylene, and calcium stearate into the high-mixer and mix with the mixture in step 1 for 20 minutes. During the mixing process, the temperature of the mixture shoul...

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Abstract

The invention discloses a thermal polymerization monomer coating modified wood-plastic reinforced composite material. The material comprises the following components in percentage by weight: 40-60% ofplant fiber powder, 20-40% of a polymer, 5-10% of a coupling agent, 1-10% of a thermal polymerization monomer and 8-10% of a plasticizer. According to the invention, a thermal polymerization monomersolution is sprayed on the surface of the plant fiber powder, then the plant fiber powder is mixed with other components, and granulating, forming and cooling are carried out to prepare the wood-plastic reinforced composite material. According to the invention, through spray coating of the thermal polymerization monomer, interface bonding strength of the plant fiber powder with a matrix material in the wood-plastic composite material is improved, and finally the purpose of improving the mechanical property and water resistance of the wood-plastic composite material is achieved. In addition, the method is simple and feasible, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of wood-plastic composite materials, and relates to a thermally polymerized monomer-coated modified wood-plastic reinforced composite material and a preparation method thereof. Background technique [0002] Wood plastic composites (WPC) refer to plant fibers (such as wood, bamboo, peanut shells, coconut shells, flax, straw, etc.) A new type of green and environmentally friendly composite material composed of thermoplastics; wood-plastic composite materials have the advantages of both plant fibers and polymer materials, and can replace wood. On the one hand, it can effectively alleviate the shortage of forest resources in my country and solve the problem of low agricultural and forestry waste. On the other hand, it can turn the traditional "white pollution" of waste plastics into materials; the application of WPC is widely used in building materials, gardens, automobile industry, packaging and transportati...

Claims

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Application Information

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IPC IPC(8): C08L51/00C08L23/06C08L23/12C08L51/06C08K5/098C08K5/09C08F289/00C08F220/14C08F212/08
CPCC08F289/00C08L51/00C08L2205/03C08F220/14C08L23/06C08L51/06C08K5/098C08L23/12C08F212/08C08K5/09
Inventor 李如燕张云浩
Owner KUNMING UNIV OF SCI & TECH
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