Manufacturing method of wood-plastic composite material with improved weather resistance

A technology of wood-plastic composite materials and thermoplastics, applied in the field of wood-plastic materials and their preparation, to achieve the effects of reducing thermal expansion coefficient, reducing stress, and reducing usage

Active Publication Date: 2017-08-22
YUNNAN ZHONGQIAN INTEGRATED HOUSING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of existing wood-plastic composite materials, the present invention provides a preparation method of a new type of wood-plastic composite material with greatly improved weather resistance

Method used

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  • Manufacturing method of wood-plastic composite material with improved weather resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Prepare materials according to the following components by mass:

[0031] 10 parts of polystyrene, 20 parts of high-density polyethylene, 10 parts of low-density polyethylene, 60 parts of polyethylene, 100 parts of wood flour, 2 parts of stearate, 1 part of paraffin wax, 5 parts of polyethylene wax, maleic anhydride 1 part of grafted polystyrene, 14 parts of maleic anhydride grafted polyethylene;

[0032] (2) Mixing the components in step (1) uniformly to obtain a mixed material;

[0033] (3) Carry out carbonization granulation and carbonization extrusion on the mixed material in step (2) in a twin-screw extrusion granulator, and the carbonization granulation and carbonization extrusion are carried out in the conventional multi-stage granulation and multi-stage extrusion process In the process, the temperature of the highest temperature section is raised to 250-260°C, the speed is 30r / min, and then the wood-plastic material is obtained through conventional cooling,...

Embodiment 2

[0035] (1) Prepare materials according to the following components by mass:

[0036] 40 parts of polypropylene, 10 parts of polyvinyl chloride, 10 parts of polystyrene, 10 parts of polyoxymethylene, 10 parts of polycarbonate, 20 parts of polyamide, 150 parts of bamboo powder, 5 parts of polypropylene wax, 4 parts of titanate, 6 parts of one or several kinds of maleic anhydride grafted polypropylene;

[0037] (2) Mixing the components in step (1) uniformly to obtain a mixed material;

[0038] (3) Carry out carbonization granulation and carbonization extrusion on the mixed material in step (2) in a twin-screw extrusion granulator, and the carbonization granulation and carbonization extrusion are carried out in the conventional multi-stage granulation and multi-stage extrusion process Among them, the temperature of the highest temperature section is raised to 260-270°C, the speed is 20r / min, and then the wood-plastic material is obtained through conventional cooling, traction, a...

Embodiment 3

[0040] (1) Prepare materials according to the following components by mass:

[0041] 10 parts of acrylic plastic, 10 parts of polysulfone, 10 parts of polyphenylene ether, 10 parts of polyethylene terephthalate, 10 parts of polybutylene terephthalate, 10 parts of polyphenylene sulfide, polyether 10 parts of sulfone, 10 parts of polyether ether ketone, 20 parts of thermoplastic polyimide, 200 parts of crop straw powder, 2 parts of stearic acid, 2 parts of stearate, 4 parts of titanate, 16 parts of isocyanate;

[0042] (2) Mixing the components in step (1) uniformly to obtain a mixed material;

[0043] (3) Carry out carbonization granulation and carbonization extrusion on the mixed material in step (2) in a twin-screw extrusion granulator, and the carbonization granulation and carbonization extrusion are carried out in the conventional multi-stage granulation and multi-stage extrusion process In the process, the temperature of the highest temperature section is raised to 270-28...

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PUM

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Abstract

The invention discloses a preparation method of a novel wood-plastic composite material capable of greatly improving the weather resistance. The preparation method comprises the following steps: uniformly mixing the thermoplastic plastics, wood fibers, high-temperature lubricating agent and high-temperature coupling agent according to a ratio to obtain a mixed material; and carbonizing granulating, carbonizing extruding, conventionally cooling, stretching and cutting to obtain the wood-plastic material, wherein the carbonizing granulating temperature and the carbonizing extruding temperature are 250 to 290 DEG C. The surface and sections of the wood-plastic composite material are black, have metal luster and have metal sound when being knocked; the heat expansion and cold shrinkage deformation is small, and the thermal deformation temperature is greatly increased; the moisture absorption performance is significantly reduced, the corrosion and decomposition are unlikely to occur, and the weather resistance is good; and the ultraviolet resistance is improved.

Description

technical field [0001] The invention relates to a wood-plastic material and a preparation method thereof, in particular to a wood-plastic material with enhanced weather resistance and a preparation method thereof. Background technique [0002] Wood-plastic, that is, wood-plastic composites (Wood-Plastic Composites, WPC), is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc. More than 35-70% of wood flour, rice husk, straw and other waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce boards or profiles. [0003] Wood-plastic materials are mainly used in building materials, furniture, logistics packaging and other industries. They are flexible and can be used in any field of wood processing to replace wood. Wood-plastic is also an environmentally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L25/06C08L23/12C08L27/06C08L59/00C08L69/00C08L77/00C08L81/02C08L81/06C08L91/06C08L51/06B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9259B29C2948/92704C08L23/06C08L97/02C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L25/06C08L23/12C08L27/06C08L59/00C08L69/00C08L77/00C08L67/02C08L81/02C08L81/06C08L91/06C08L51/06C08L79/08
Inventor 徐开蒙邓来学毕天飞陈婉朱义鑫王云
Owner YUNNAN ZHONGQIAN INTEGRATED HOUSING CO LTD
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