High-strength wear-resistant wood-plastic composite material and preparation method thereof

A composite material, high-strength technology, applied in the field of polymer composite material preparation, can solve the problems of limiting the use range of wood-plastic composite materials, low strength and anti-wear performance of wood-plastic composite materials, reducing internal energy consumption and improving resistance to wear. Grinding effect, the effect of improving mechanical properties

Inactive Publication Date: 2021-05-28
王诗英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength and wear resistance of wood-plastic composite materials are relatively low, thus limiting the scope of use of wood-plastic composite materials

Method used

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  • High-strength wear-resistant wood-plastic composite material and preparation method thereof
  • High-strength wear-resistant wood-plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] During the preparation of wood-plastic composite materials:

[0057] (1) Pretreatment of raw materials: The manufacture of wood-plastic composite materials is based on the treatment of raw materials. First, the treatment of wood chips. Through repeated freezing and thawing, the pore structure of wood chips is widened, and the specific surface area of ​​wood chips is increased. The contact probability of large wood chips and plastics improves the compatibility of the two, thereby improving the cohesion of wood-plastic composites and increasing the mechanical strength of wood-plastic composites; followed by the modification of plastics, first using sodium silicate and hydrochloric acid to react Produce orthosilicic acid precipitation, and then hydrolyze the orthosilicic acid precipitation to produce nano-silica particles under high temperature conditions, thereby obtaining silica sol; then add mussel mucin, because there are more than 10% of mussel mucin peptide chain frag...

example 1

[0065] (1) Treatment of sawdust:

[0066] Weigh the sawdust and immerse it in deionized water for 15 hours, take out the soaked sawdust and immediately spray and freeze it with liquid nitrogen for 2 minutes, heat up to 40°C for 10 minutes after spraying, and repeat the freezing and thawing treatment for 5 times to obtain treated wood chips ;Through repeated freezing and thawing, the pore structure of wood chips is widened, thereby increasing the specific surface area of ​​wood chips, which can increase the contact probability of wood chips and plastics, improve the compatibility of the two, and then improve the cohesion of plastic wood pallets, increase the plastic wood The mechanical strength of the tray;

[0067](2) Pour the sodium silicate solution with a concentration of 0.5mol / L into the beaker, adjust the pH to 6.0 with hydrochloric acid with a concentration of 1mol / L, stir the reaction with a magnetic stirrer at a speed of 300r / min for 1h, and transfer to In the reacti...

example 2

[0078] (1) Treatment of sawdust:

[0079] Weigh the sawdust and immerse it in deionized water for 16 hours, take out the soaked sawdust and immediately spray and freeze it with liquid nitrogen for 3 minutes, heat up to 42°C for 12 minutes after spraying, and repeat freezing and thawing for 6 times to obtain treated wood chips ;Through repeated freezing and thawing, the pore structure of wood chips is widened, thereby increasing the specific surface area of ​​wood chips, which can increase the contact probability of wood chips and plastics, improve the compatibility of the two, and then improve the cohesion of plastic wood pallets, increase the plastic wood The mechanical strength of the tray;

[0080] (2) Pour the sodium silicate solution with a concentration of 0.5mol / L into the beaker, adjust the pH to 6.0 with hydrochloric acid with a concentration of 1mol / L, stir the reaction with a magnetic stirrer at a speed of 320r / min for 1h, and transfer it to In the reaction kettle,...

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Abstract

The invention relates to a high-strength wear-resistant wood-plastic composite material and a preparation method thereof, and belongs to the technical field of polymer composite material preparation. According to the wood-plastic composite material disclosed by the invention, the treated wood chips, the self-made wear-resistant particles and the corresponding plastic wear-resistant reinforcing material are added into the wood-plastic composite material, so that the wear resistance and the mechanical property of the wood-plastic composite material are greatly improved, the application range of the wood-plastic composite material is widened, and the wood-plastic composite material has a wide application prospect.

Description

technical field [0001] The invention relates to a high-strength wear-resistant wood-plastic composite material and a preparation method thereof, belonging to the technical field of polymer composite material preparation. Background technique [0002] In recent years, relevant scholars in our country have done a lot of work in the research on the properties of wood-plastic composite materials, and obtained some valuable research results. Wood-plastic composite material is a new type of composite material that has emerged in recent years at home and abroad. It refers to the use of thermoplastics such as polyethylene, polypropylene, and polyvinyl chloride instead of resin adhesives, and a certain amount of waste plant fibers such as wood powder, rice husk, and straw. The mixed new wood material, and then through extrusion, molding, injection molding and other plastic processing techniques, the board or profile produced is an excellent substitute for natural wood. Wood-plastic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L97/02C08L27/18C08L89/00C08K3/08C08K7/24C08K9/02C08K3/36C08K13/06
CPCC08L101/00C08K2201/011C08L2205/035C08K2003/085C08L97/02C08L27/18C08L89/00C08K3/08C08K7/24C08K9/02C08K3/36C08K13/06
Inventor 王诗英
Owner 王诗英
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