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A wood-plastic composite material based on lignin and coffee shell powder and its preparation method

A wood-plastic composite material and lignin technology, which is applied in the field of wood-plastic composite materials, can solve the problems of poor performance of wood-plastic composite materials, achieve the effects of alleviating the large amount of plastic used, improving the impact strength, and alleviating the shortage of forest resources

Active Publication Date: 2022-01-18
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Coffee is one of the important crops in Yunnan. As one of the by-products of the coffee processing industry, coffee husk is widely sourced like lignin and is cheap and easy to get. However, the performance of wood-plastic composite materials prepared by using coffee husk powder and thermoplastics is poor.

Method used

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  • A wood-plastic composite material based on lignin and coffee shell powder and its preparation method
  • A wood-plastic composite material based on lignin and coffee shell powder and its preparation method
  • A wood-plastic composite material based on lignin and coffee shell powder and its preparation method

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Embodiment 1

[0037] The wood-plastic composite material based on lignin and coffee husk powder of this embodiment includes the following raw materials in mass percentage:

[0038] 25% lignin, 5% coffee shell powder, 30% wood powder, density 0.90-0.96g / cm 3 20% polyethylene, 10% maleic anhydride grafted polyethylene, 8% calcium carbonate, 1% paraffin, 1% dispersant (0.5% each of stearic acid and calcium stearate).

[0039] The preparation method of the above-mentioned wood-plastic composite material that this embodiment also relates to is carried out as follows:

[0040] Firstly, the lignin was dried at 60°C for 24 hours, and the coffee shell powder and wood powder were dried in a blast drying oven at 105°C for 4 hours. Then mix lignin, coffee shell powder, wood powder, polyethylene, compatibilizer, filler, lubricant and dispersant in a high-speed mixer according to the above ratio for 20 minutes at a speed of 1000r / min; melt in a twin-screw extruder For mixing, the temperatures in Zone 1...

Embodiment 2

[0043] The wood-plastic composite material based on lignin and coffee husk powder of this embodiment includes the following raw materials in mass percentage:

[0044] 20% lignin, 10% coffee shell powder, 30% wood powder, density 0.90-0.96g / cm 3 20% polyethylene, 10% maleic anhydride grafted polyethylene, 8% calcium carbonate, 1% paraffin, 1% dispersant (0.5% each of stearic acid and calcium stearate).

[0045] The preparation method of the above-mentioned wood-plastic composite material that this embodiment also relates to is carried out as follows:

[0046]Firstly, the lignin was dried at 60°C for 24 hours, and the coffee shell powder and wood powder were dried in a blast drying oven at 105°C for 4 hours. Then mix lignin, coffee shell powder, wood powder, polyethylene, compatibilizer, filler, lubricant and dispersant in a high-speed mixer according to the above ratio for 20 minutes at a speed of 1000r / min; melt in a twin-screw extruder For mixing, the temperatures in Zone 1...

Embodiment 3

[0049] The wood-plastic composite material based on lignin and coffee husk powder of this embodiment includes the following raw materials in mass percentage:

[0050] 15% lignin, 15% coffee shell powder, 30% wood powder, density 0.90-0.96g / cm 3 25% polyethylene, 5% maleic anhydride grafted polyethylene, 8% calcium carbonate, 1% paraffin, 1% dispersant (0.5% each of stearic acid and calcium stearate).

[0051] The preparation method of the above-mentioned wood-plastic composite material that this embodiment also relates to is carried out as follows:

[0052] Firstly, the lignin was dried at 55°C for 24 hours, and the coffee shell powder and wood powder were dried in a blast drying oven at 105°C for 4 hours. Then mix lignin, coffee shell powder, wood powder, polyethylene, compatibilizer, filler, lubricant and dispersant in a high-speed mixer according to the above ratio for 20 minutes at a speed of 1000r / min; melt in a twin-screw extruder For mixing, the temperatures in Zone 1...

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Abstract

The invention discloses a wood-plastic composite material prepared from lignin and coffee husk powder and a preparation method thereof. The material includes the following raw materials in mass percentages: 5%-30% of lignin, 5%-60% of coffee husk powder, wood powder 0‑30%, density 0.90‑0.96g / cm 3 20‑30% polyethylene, 0‑10% compatibilizer, 8% filler, 1% lubricant and 1% dispersant. The multiple properties of the composite material of the present invention are greatly improved, and at the same time, the anti-fungal erosion effect of the wood-plastic composite material is also significantly improved. During the aging process of the wood-plastic composite material, its biological durability can be improved, and it has the advantages of Broad application prospects.

Description

technical field [0001] The invention relates to a wood-plastic composite material, in particular to a wood-plastic composite material based on lignin and coffee husk powder, and a preparation method thereof, which belongs to the field of wood-plastic composite materials. Background technique [0002] Wood-Plastic Composites (WPC) is abbreviated as WPC, which mainly refers to a kind of high-performance, high value-added green and environmentally friendly composite materials composed of polyethylene, polypropylene and other plastics and wood fiber materials. The cost of plastic is high, and because wood-plastic composites contain a certain amount of wood fibers, when they are used in outdoor environments for a long time, sunlight, rain, and suitable temperatures provide objective conditions for the growth of fungi, so they are vulnerable to environmental damage. The influence of microorganisms such as fungi and bacteria can lead to mildew, decay and deterioration to reduce the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L97/00C08L99/00C08L23/06C08L51/06C08L91/06C08K3/26C08K5/098C08K5/09
CPCC08L97/02C08L99/00C08L2205/02C08L2205/035C08L2205/08C08K2003/265C08L97/005C08L23/06C08L51/06C08L91/06C08K3/26C08K5/098C08K5/09
Inventor 夏炎赵毅力罗蓓徐志伟李方方
Owner SOUTHWEST FORESTRY UNIVERSITY
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