Carbon fibre wood electromagnetic shielding material and preparation method thereof

Abstract

The invention relates to a carbon fibre wood electromagnetic shielding material and a preparation method thereof, belonging to the field of electromagnetic shielding materials. According to the invention, a carbon fibre reinforced wood functional composite material is formed by preparing glue mixed carbon fibre and glue mixed wood fibre according to the mass ratio of 3:7 to 1:1 through a hot-pressing mould process; the glue mixed carbon fibre is formed by mixing carbon fibre with isocyanate according to the mass ratio of 10:1; and the glue mixed wood fibre is formed by mixing wood fibre with urea-formaldehyde glue according to the mass ratio of 5:1. According to the invention, the functional wood composite material is prepared from carbon fibre as reinforcement and a wood fibre material (wood residue)through a simple and effective composite process; good electrical conductivity and electromagnetic shielding characteristics are given to the composite material while the mechanical property of the wood composite material is increased; furthermore, the wood optimization using purpose for recycling wastes is realized.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding materials, and relates to a wooden functional composite material for construction and a preparation method thereof, in particular to a wooden composite material with electromagnetic shielding function using chopped carbon fibers as reinforcements and a preparation method thereof. Background technique [0002] Wood is a well-known traditional building material and a popular decorative material. Today, when non-renewable resources are increasingly depleted, wood contributes to the sustainable development of society with its unique natural properties such as carbon sequestration, regeneration, and indoor environment adjustment, as well as its processing and utilization characteristics such as high strength-to-weight ratio and low processing energy consumption. made a significant contribution. How to make better use of these properties and limit their side effects to the greatest extent is th...

AI Technical Summary

Problems solved by technology

The chemical method or filling method is generally used, and there are currently the following problems: the metallization process of the wood surface is complicated; the metal fiber in the filled conductive material is difficult to manufacture, and the stability of the metal mesh board is poor; the addition of carbon powder or metal particles requires a variety of materials. Additional additives such as coupling agents and activators; carbon black products are black in color, which affects the appearance, and require a small particle size; graphite is highly dependent on pressure and is easily affected by ash content; the use of carbon fiber cloth to reinforce wood materials is expensive and unsuitable large-scale production, etc.

This limits the industrial production of wood-based conductive composites