Wood-plastic composite material preparation method

A wood-plastic composite material and wood powder technology, which is applied in the field of wood-plastic composite materials, can solve the problems of low mechanical properties, achieve good UV resistance, improve weather resistance, and prolong service life.

Inactive Publication Date: 2020-01-03
重庆泛锐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of low mechanical properties of current wood-plastic composite materials, the purpose of the present invention is to provide a method for preparing wood-plastic composite materials with good interface bonding, light weight and high strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a wood-plastic composite material, the steps are as follows:

[0021] (1) Pretreatment of wood powder: wood powder (70 mesh), epoxy resin, curing agent, accelerator, reactive diluent, and inert diluent according to the mass ratio of 15:100:60:0.08:6:10 Mix evenly, and cure at 60 °C for 10 h to obtain pretreated wood powder; among them, the epoxy resin is epoxy resin E51, the curing agent is methyl tetrahydrophthalic anhydride, the accelerator is organic urea UR300, The active diluent is AGE, and the inert diluent is absolute ethanol;

[0022] (2) Pretreated wood powder, resin PP, hollow glass microspheres (60 mesh), coupling agent MAPP, lubricant PE wax, and ultraviolet absorber UV-360 according to the mass ratio of 35:30:25:3: 4:3 mixed uniformly for 60 min; among them, the hollow glass microspheres need to be surface treated with coupling agent KH-560 before use: the hollow glass microspheres are immersed in the coupling agent KH-560 for 12 h,...

Embodiment 2

[0026] A preparation method of a wood-plastic composite material, the steps are as follows:

[0027] (1) Pretreatment of wood powder: wood powder (70 mesh), epoxy resin, curing agent, accelerator, active diluent, and inert diluent according to the mass ratio of 20:100:90:2:10:15 Mix evenly, and cure at 80 °C for 8 h to obtain pretreated wood powder; among them, the epoxy resin is epoxy resin E44, the curing agent is methyl hexahydrophthalic anhydride, the accelerator is organic urea UR500, The active diluent is AGE, and the inert diluent is acetone;

[0028] (2), the pretreated wood powder, resin HDPE, hollow glass microspheres (80 mesh), coupling agent MAPE, lubricant PE wax, ultraviolet absorber UV-360 according to the mass ratio of 40:35:20:4: 3:3 mixed evenly for 45 minutes; among them, the hollow glass microspheres need to be surface-treated with coupling agent KH-560 before use, and the hollow glass microspheres are immersed in the coupling agent KH-560 for 16 hours, th...

Embodiment 3

[0032] A preparation method of a wood-plastic composite material, the steps are as follows:

[0033] (1) Pretreatment of wood powder: wood powder (120 mesh), epoxy resin, curing agent, accelerator, reactive diluent, and inert diluent according to the mass ratio of 8:100:120:3:12:12 Mix evenly, and cure at 100 °C for 10 h to obtain pretreated wood powder; among them, the epoxy resin is epoxy resin E51, the curing agent is dodecenyl succinic anhydride, the accelerator is DMP-30, and the reactive diluent is 501, and the inert diluent is butanone;

[0034] (2), the pretreated wood powder, resin PP, hollow glass microspheres (100 mesh), coupling agent MAPP, lubricant PE wax, ultraviolet absorber UV-360 according to the mass ratio of 20:25:25:3: Mix 3:4 evenly for 30 minutes; among them, the hollow glass microspheres need to be surface-treated with coupling agent KH-560 before use, and the hollow glass microspheres are immersed in the coupling agent KH-560 for 24 h, then washed and...

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Abstract

The invention belongs to the technical field of wood-plastic composite materials, and discloses a wood-plastic composite material preparation method, which comprises: (1) pre-treating wood powder, wherein wood powder, an epoxy resin, a curing agent, an accelerant, a reactive diluent and an inert diluent are uniformly mixed according to a mass ratio of (2-20):100:(20-150):(0.05-3):(5-15):(10-20), and curing treatment is performed to obtain pretreated wood powder; (2) uniformly mixing the pretreated wood powder, a resin, hollow glass microspheres, a coupling agent, a lubricant and an ultravioletabsorbent according to a mass ratio of (25-40):(20-40):(20-25):(2-4):(2-4):(2-4); and (3) carrying out extrusion molding, hot press molding or compression molding on the granules uniformly mixed in the step (2) to obtain the wood-plastic composite material. The wood-plastic composite material prepared by the method is good in interface bonding, light in weight and high in strength.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite materials, and in particular relates to a preparation method of wood-plastic composite materials. Background technique [0002] Wood-plastic composites (WPC) are made of natural plant fiber fillers (including wood powder, bamboo powder, straw, rice husk and waste plant fibers, etc.) and plastics (including polyethylene (PE), polypropylene ( PP), polyvinyl chloride (PVC) and waste thermoplastics, etc.) It is a green and environment-friendly new material that is melted and mixed together to form granules, and then processed and formed. WPC solves the problems of environmental pollution caused by the low comprehensive utilization rate of waste wood fiber materials and the treatment of waste wood fiber materials. Degradability effectively alleviates the contradiction between the tight supply of wood and the growing social demand. WPC greatly embodies the concept of my country's develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L63/00C08L23/06C08K9/06C08K7/28C08K5/3475
CPCC08L23/06C08L23/12C08L63/00C08L2201/06C08L2201/08C08L2205/035C08L2207/062C08L97/02C08K9/06C08K7/28C08K5/3475
Inventor 姚栋嘉吕多军吴恒张东生刘喜宗杨超张相国董会娜
Owner 重庆泛锐科技有限公司
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