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Clubbed composite material of wood-wool and plastics, and method of producing the same

A technology of composite materials and wood wool, which is applied in the field of composite materials and its preparation, can solve the problems of low strength and high cost, achieve high mechanical properties, reduce thermal degradation, and reduce energy consumption

Inactive Publication Date: 2008-04-02
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low strength and high cost of existing wood-plastic composite materials, and to provide a rod-shaped wood wool-plastic composite material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Embodiment 1: The rod-shaped wood wool-plastic composite material is formed by mixing and extruding 55-75 parts of rod-shaped wood wool, 20-45 parts of plastic and 0.5-4 parts of lubricant according to the parts by weight. production.

[0019] The rod-shaped wood wool is processed at room temperature by using one or more combinations of hammer mills, roller mills, and planing equipment to process wood with a longitudinal length of more than 2 mm into a length of 1-8 mm and a length of 1 to 8 mm. Wood wool with a diameter ratio of 5 to 25 (this rod-shaped wood wool has better fluidity); the wood is broad-leaved wood and / or coniferous wood, and the coniferous wood is Korean pine, larch, spruce, One or a combination of fir, fir, and cypress. The hardwood is one or a combination of birch, ash, oak, beech, basswood, camphor, teak, rosewood, rosewood, and ebony. When the wood is hardwood and softwood, it can be combined in any ratio. When the coniferous wood is a combinati...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the rod-shaped wood wool plastic composite material is composed of 60-70 parts of rod-shaped wood wool, 30-40 parts of plastic and 1-3 parts of The lubricant is made by mixing and one-step extrusion molding. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023]Embodiment 3: The difference between this embodiment and Embodiment 1 is that the rod-shaped wood wool-plastic composite material is composed of 65 parts of rod-shaped wood wool, 35 parts of plastic and 2 parts of lubricant by weight ratio. Made by one-step extrusion molding. Others are the same as the first embodiment.

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Abstract

A rod-type wood wire plastic composite material and the preparation method relates to a composite material and the preparation method. The present invention solves the problems of low intensity and high cost of the current wood-plastic composite material. The rod-type wood wire plastic composite material of the present invention is prepared through hot mixing, cool mixing, one-step extrusion and molding of 55 weight portion to 75 weight portion of rod-type wood wire, 20 weight portion to 45 weight portion of plastic and 0.5 weight portion to 4 weight portion of lubricant. The rod-type wood wire of the present invention is a wood-wire with a length of 1mm to 8mm and a length-diameter of 5 to 25. Though the rod-type wood wire of unit mass has a smaller specific surface area, the surface of each wood wire is far higher than wood powder particles; and the rod-type wood produces tropism in the extrusion and molding process. Therefore, the performances of the composite material are not lowered because of the reduction of the specific surface area of fiber material. Instead, the performances of the composite material are strengthened because of the large surface area and the tropism effects of each wood-wire. The present invention has the advantages of high strength of product, high production efficiency and low cost. And the present invention has the advantages of simple process and convenient operation.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a wood-plastic composite material prepared by using rod-shaped wood wool and thermoplastic plastics as main raw materials and a preparation method thereof, Background technique [0002] Wood-plastic composite material is a composite material mainly composed of wood or other plant fibers and other wood fiber materials as the base material and plastic. It is divided into wood / thermosetting resin composite materials and wood / thermoplastic composite materials. Wood / thermoplastic composite materials generally use wood fiber or wood powder and thermoplastic resin as raw materials. The basic preparation method is that the resin is melted at a certain temperature, compounded with wood fiber material through the action of other additives, and then has a specific shape. The mold is cooled and shaped to obtain the product. [0003] Since the extrusion molding process...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08K5/09B29C47/00C08L91/06C08L23/06C08L23/12C08L25/06
Inventor 王清文王海刚宋永明张征明王伟宏
Owner NORTHEAST FORESTRY UNIVERSITY
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