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A kind of high tenacity polylactic acid wood-plastic composite material

A composite material, lactic acid wood technology, applied in the field of high-toughness polylactic acid wood-plastic composite materials, can solve the problems of easy decay of wood fibers, aging and degradation of plastic materials, etc., and achieve the effect of good biodegradability and good mechanical properties

Active Publication Date: 2018-06-29
G&S HUZHOU ENTERPRISES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although WPC has many advantages, it also has the disadvantages of the two materials: for example, plastic materials are prone to aging and degradation, wood fibers are prone to decay, etc.

Method used

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  • A kind of high tenacity polylactic acid wood-plastic composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-toughness polylactic acid wood-plastic composite material, which is prepared by the following method:

[0026] (1) Preparation of plant fiber:

[0027] According to the following parts by weight, get 50 parts of coconut fiber, 6 parts of bagasse, 10 parts of ash wood powder, and 3 parts of rice husk powder and mix evenly;

[0028] (2) Plant cellulase modification:

[0029] According to the following parts by weight, take 0.6 part of lignin peroxidase, 1 part of laccase, 0.5 part of β-glucanase, and 100 parts of water to prepare an enzyme solution;

[0030] Put the mixed plant fibers into the enzyme solution at a weight ratio of 1:30, keep the constant temperature at 38°C for 40 minutes, and finally heat to 80°C for 50 minutes;

[0031] After modification, rinse with clean water and dry at 60°C;

[0032] (3) Raw material blending:

[0033] Configure the dried raw materials according to the following parts by weight: 60 parts of modified plant fibers, 100 parts...

Embodiment 2

[0040] A high-toughness polylactic acid wood-plastic composite material, which is prepared by the following method:

[0041] (1) Preparation of plant fiber:

[0042] According to the following parts by weight, get 60 parts of coconut fiber, 3 parts of sucrose bagasse, 10 parts of ash wood powder, and 3 parts of rice husk powder and mix evenly;

[0043] (2) Plant cellulase modification:

[0044] According to the following parts by weight, take 0.9 part of lignin peroxidase, 0.5 part of laccase, 0.5 part of β-glucanase, and 100 parts of water to prepare an enzyme solution;

[0045] Put the mixed plant fibers into the enzyme solution at a weight ratio of 1:30, keep the constant temperature at 38°C for 60 minutes, and finally heat to 80°C for 50 minutes;

[0046] After modification, rinse with clean water and dry at 60°C;

[0047] (3) Raw material blending:

[0048] Configure the dried raw materials according to the following parts by weight: 42 parts of modified plant fibers,...

Embodiment 3

[0055] A high-toughness polylactic acid wood-plastic composite material, which is prepared by the following method:

[0056] (1) Preparation of plant fiber:

[0057] According to the following parts by weight, get 51 parts of coconut fiber, 5 parts of bagasse, 10 parts of ash wood powder, and 3 parts of rice husk powder and mix uniformly;

[0058] (2) Plant cellulase modification:

[0059] According to the following parts by weight, take 0.7 parts of lignin peroxidase, 0.9 parts of laccase, 0.5 parts of β-glucanase, and 100 parts of water to prepare an enzyme solution;

[0060] Put the mixed plant fibers into the enzyme solution at a weight ratio of 1:30, keep the constant temperature at 38°C for 50 minutes, and finally heat to 80°C for 50 minutes;

[0061] After modification, rinse with clean water and dry at 60°C;

[0062] (3) Raw material blending:

[0063] Configure the dried raw materials according to the following parts by weight: 59 parts of modified plant fibers, 1...

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Abstract

The invention discloses a preparation method of a high-toughness polylactic acid wood-plastic composite material. The preparation method includes the steps: (1) preparing plant fibers by uniformly mixing coconut fibers, sugarcane bagasse, olive ash powder and rice hull powder; (2) performing enzyme modification for the mixed plant fibers, rinsing the mixed plant fibers after modification and drying the mixed plant fibers at the temperature of 60 DEG C; (3) blending dried raw materials including in parts by weight, 42-60 parts of the modified plant fibers, 100-120 parts of polylactic acid and 0.8 part of nano calcium carbonate, completely melting weighed polylactic acid granules on an open mill, uniformly adding the modified plant fibers, adding all the other raw materials after uniform mixing, adjusting rotation speed to be 30r / min, turning and mixing the raw materials for 5-6 minutes and sufficiently uniformly mixing the raw materials; (4) prepressing; (5) hot-forming.

Description

technical field [0001] The invention relates to a high-toughness polylactic acid wood-plastic composite material, which belongs to the field of wood-plastic processing. Background technique [0002] In the past ten years, wood-plastic composite products have gradually entered the market, but the properties of some wood-plastic materials are still not ideal, such as low impact strength and flexural modulus. Increasing the content of wood powder can lead to a sharp decline in the impact performance of wood-plastic composites. For example, when the filling content exceeds 40%, the impact performance will be reduced by more than 50%; It is one of the important properties of building materials. Therefore, improving the mechanical properties and flame retardancy is the key to improve the wide application of wood-plastic composites. [0003] Wood-plastic composite (WPC) is an organic combination of plant fibers and plastics, taking into account the dual characteristics of plant f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L97/02C08K3/26C12P19/14C12P19/04B29C35/02B29B7/00
CPCB29B7/002B29C35/02C08K2201/011C08L67/04C08L2201/06C08L2205/025C08L2205/035C12P19/04C12P19/14C08L97/02C08K2003/265
Inventor 吕战强
Owner G&S HUZHOU ENTERPRISES