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Carbon fiber cloth reinforced type wood-plastic composite material and preparation method thereof

A technology of wood-plastic composite materials and carbon fiber cloth, which is applied in the direction of wood layered products, chemical instruments and methods, and synthetic resin layered products, can solve the problems of low impact toughness and low comprehensive mechanical properties, and reduce brittleness and strengthen Remarkable, toughness-enhancing effect

Inactive Publication Date: 2014-06-04
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a carbon fiber cloth reinforced wood-plastic composite material and its preparation method in order to solve the problems of low comprehensive mechanical properties and low impact toughness of the existing wood-plastic composite material

Method used

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  • Carbon fiber cloth reinforced type wood-plastic composite material and preparation method thereof
  • Carbon fiber cloth reinforced type wood-plastic composite material and preparation method thereof
  • Carbon fiber cloth reinforced type wood-plastic composite material and preparation method thereof

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specific Embodiment approach 1

[0028] Embodiment 1: In this embodiment, a carbon fiber cloth reinforced wood-plastic composite material is formed by hot-pressing a surface wood-plastic layer, a reinforced carbon cloth layer, a core wood-plastic layer, a reinforced carbon cloth layer, and a surface wood-plastic layer.

[0029] The addition of carbon fiber cloth in this embodiment significantly improves the mechanical properties of the wood-plastic composite material. Compared with the wood-plastic material without adding carbon fiber cloth, the bending strength is increased by 1 times; the elastic modulus is increased by 0.5 times; the tensile strength is increased by 2 times, and the tensile performance enhancement effect is very significant; the elongation at break is higher. 1.5 times; the maximum impact strength has been increased by more than 4 times, which significantly reduces the brittleness of wood-plastic composite materials and enhances toughness.

specific Embodiment approach 2

[0030] Specific embodiment two: In this embodiment, a method for preparing a carbon fiber cloth reinforced wood-plastic composite material is carried out according to the following steps:

[0031] 1. Preparation of wood-plastic composite veneer;

[0032] 2. Preparation of carbon fiber reinforced wood-plastic composite materials: According to the performance requirements of carbon fiber reinforced wood-plastic composite materials, the surface wood-plastic board, reinforced carbon cloth, core wood-plastic board, reinforced carbon cloth, and surface wood-plastic board of corresponding thickness are sequentially prepared. Stack the blanks, then put them into a hot press and press at a temperature of 170-190°C for 3-15 minutes, and then cool to below 60°C to obtain a carbon fiber cloth reinforced wood-plastic composite material, which is completed; the performance requirements described therein is the flexural strength, modulus of elasticity, tensile strength or elongation at break...

specific Embodiment approach 3

[0043] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the preparation method of the wood-plastic veneer described in step one is as follows: 1. Granulation: biomass fibers, thermoplastic materials and coupling agents are mixed by mass The ratio of 1:0.6:0.07 is mixed in a high-speed mixer for 10 minutes, and then granulated with a twin-screw extruder to obtain pellets of hot-pressed boards; 2. Preparation of wood-plastic composite veneer: the pellets in step 1 Pave into a slab with a thickness of 1-10mm in a closed steel mold, then put the slab into a hot press at a temperature of 170-190°C for 3-15 minutes, and obtain a wood-plastic composite veneer after cooling ; Wherein the thermoplastic material is thermoplastic powder or thermoplastic fiber; the thermoplastic is polyethylene, polypropylene or polyvinyl chloride plastic; the coupling agent is maleic anhydride grafted polypropylene, maleic anhydride grafted polyethylene...

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Abstract

The invention relates to a carbon fiber cloth reinforced type wood-plastic composite material and a preparation method thereof, and aims to solve the problems of low comprehensive mechanical property, particularly low impact toughness, of an existing wood-plastic composite material. The carbon fiber cloth reinforced type wood-plastic composite material consists of two surface wood-plastic layers, two carbon cloth reinforcement layers and a core wood-plastic layer. The preparation method comprises the following steps: (1) preparing a single wood-plastic composite plate; (2) treating carbon cloth, namely passivating the surface of the carbon cloth; (3) preparing the carbon fiber cloth reinforced type wood-plastic composite material, namely sequentially stacking and assembling a surface wood-plastic plate, the reinforced carbon cloth, a core wood-plastic plate, another reinforced carbon cloth and a surface wood-plastic plate with the corresponding thicknesses according to the performance requirements of the carbon fiber cloth reinforced type wood-plastic composite material, hot-pressing for 3-15min, cooling and finishing. According to the method, the toughness of the wood-plastic composite material is remarkably improved. The carbon fiber cloth reinforced type wood-plastic composite material can be applied to the field of high-performance structures and engineering materials.

Description

technical field [0001] The invention relates to a carbon fiber cloth reinforced wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood plastic composites (WPC for short) is a new type of material that combines a certain proportion of wood fibers with thermoplastic polymers or other materials. Due to the addition of plastics, the surface hardness, dimensional stability, water resistance, and corrosion resistance of wood are increased, and generally no surface finishing is required, which meets the needs of future economic development, and its future is immeasurable. [0003] It is precisely because of the many advantages of wood-plastic composite materials that its market is growing rapidly, especially in construction and automotive applications. On the other hand, the rapidly expanding market has put forward higher performance requirements for the wider application of wood-plastic composite materials. For example, when it is ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/02B32B21/04B32B21/10B32B27/12C08L23/06C08L23/12C08L27/06C08L97/02
Inventor 王伟宏杜凤周晨王海刚王清文
Owner NORTHEAST FORESTRY UNIVERSITY
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