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A kind of production method of wood-plastic composite material

A technology of wood-plastic composite material and production method, which is applied in the production field of wood-plastic composite material, can solve the problems that materials cannot be well dispersed, high requirements for raw materials, high impurity content, etc., to save energy, ensure continuity, Excellent physical and chemical properties

Inactive Publication Date: 2014-10-08
广州市威格林环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The purpose of the present invention is to provide a production method of wood-plastic composite materials, which can use waste plastics and biomass fibers with high impurity content and complex components as raw materials to produce wood-plastic composite materials with a filling content of ≥60%, solving the problem of In the existing production process of wood-plastic composite materials, the requirements for raw materials are relatively high, the problem that materials with relatively high viscosity cannot be dispersed well, and the quality of wood-plastic composite materials deteriorates when the filling amount is high.

Method used

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  • A kind of production method of wood-plastic composite material
  • A kind of production method of wood-plastic composite material
  • A kind of production method of wood-plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. Production process:

[0065] 1. Preparation of raw materials

[0066] Step 1: Grind sawdust and branches into wood powder of about 40-80 mesh; then send it to the dryer for drying, so that the moisture content is ≦2%. Finally, the dried wood powder, stearic acid, and titanate coupling agent were added to a high-speed mixer at mass percentages of 93.6%, 4.45%, and 1.95%, and mixed evenly; then bagged and set aside.

[0067] Step 2: First replace the screen of the plastic crusher with a screen with an aperture of 15-30mm, then crush the recovered PP film and PE film separately, and then mix them evenly at a mass ratio of 1:1. If the recycled plastic film has a high moisture content, the crushed PP and PE films should be dried in a dryer to make the moisture ≤ 2%, and then packed into bags for later use.

[0068] 2. Mixing / Modification

[0069] First, heat the internal mixer 1 to 155-215°C, manually add the crushed PP and PE film mixture into the internal mixer at a ...

Embodiment 2

[0079] The mass percentage of raw materials, production process and molding process of this embodiment are the same as in Example 1, except that the plastics used are recycled plastic waste from carton factories; wood fibers are residual pulp fibers (impurities such as metals and rubber and total fibers) content of 70-75%).

Embodiment 3

[0080] Embodiment three, produce by the mode of extruding molding

[0081] The raw material of this embodiment is the same as that of the second embodiment and its mass percentage.

[0082] Due to the complex composition of the plastic waste from the carton factory, the fiber has a high content of impurities and cannot flow, and cannot be extruded before modification. Therefore, the modified plastic waste and fiber from the carton factory are used to produce products through extrusion molding.

[0083] Comparing the products produced by extruding hot material through this process and then performing thermocompression molding (i.e. Example 2) with the products produced by extrusion molding (i.e. Example 3), the performance is shown in Table 1:

[0084]

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PUM

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Abstract

The invention discloses a production method for wood-plastic composite material, which mainly comprises the following steps of: preparing raw materials, banburying, loading materials, extruding materials, carrying out hot press molding and the like. According to the production method for the wood-plastic composite material, waste plastics, such as an agricultural mulching film and household plastic garbage as well as biopolymer fibers, such as crop straws and chaffs can be processed, and the processed raw materials are combined into the wood-plastic composite material, thereby being favorable for solving the environment pollution problem, reducing wood consumption and protecting the environment.

Description

technical field [0001] The invention relates to a production method of a wood-plastic composite material, in particular to a production method of a high-filling wood-plastic composite material. Background technique [0002] Wood-plastic composite materials have the following advantages: ①Waterproof and moisture-proof, suitable for use in humid environments. ② Good machinability, can be processed like wood. ③No cracking, no expansion, no deformation, no repair and maintenance. ④ Anti-insect, anti-termite, long service life. ⑤ Simple installation and convenient construction. ⑥Environmentally friendly, non-polluting, recyclable; reduce waste pollution to the environment and other advantages. Therefore, wood-plastic composite materials are increasingly favored by the construction industry. [0003] At present, there are four main production and molding methods of wood-plastic composite materials: extrusion molding, injection molding, thermocompression molding, and compressi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/00B29C47/00B29C43/00B29B7/02C08L97/02C08L101/00
Inventor 萧剑鸣赵向云李君刘定学范群
Owner 广州市威格林环保科技有限公司