Manufacturing method for environmental-friendly fire-retardant fiber board

Abstract

The invention relates to an environmental-friendly fire-retardant fiber board and a manufacturing method thereof. In the technical scheme of the invention, forest residues and wood wastes are used as main raw materials to output with wood fiber, filling materials such as lignin ammonium sulphonate, industrial urea and wax emulsion recycled from paper-making waste liquid in raw materials after the raw materials are dried and treated, appropriate amount of ammonium dihydrogen phosphate flame retardant is added, and the processing technology of heat treatment setting under high pressure is adopted to manufacture the middle and high density fiber board with functions of high strength ratio, environment-friendly characteristic, fire retardant property and the like. On one side, the manufacture process solves the practical problem of low resource utilization ratio in spite of rich biomass resources in China. On the other side, the manufacture process abandons the traditional processing method of direct glue sizing, breaking away from depending on formaldehyde adhesives. Therefore, the process is a novel, environmental-friendly technology with functions such as fire retardant property for fiber board manufacture.

Description

technical field [0001] The invention relates to a manufacturing method of an environment-friendly flame-retardant fiberboard, which belongs to the manufacturing method of artificial boards. Background technique [0002] With the rapid development of the world's wood-based panel industry, the glue used in the wood-based panel industry represented by urea-formaldehyde, phenol-formaldehyde and melamine-formaldehyde glue has developed rapidly due to its excellent adhesion and low price. However, the "trialdehyde" glue that uses petroleum as raw material will release formaldehyde during the use of wood-based panels. Today, with the increasing awareness of environmental protection and the decreasing petroleum resources, it is necessary to use renewable resources with a large number and high activity in nature to prepare environmentally friendly. The significance of wood-based panels is very great. At the same time, because wood-based panels are flammable, and wood-based panel pro...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to use wooden waste and by-products of forest product processing as raw materials to manufacture them into a hot-pressed wood-based panel with wood fiber as the main material, and at the same time provide a A wide range of wood-based panel manufacturing methods, this kind of panel has the characteristics of high strength ratio, environmental friendliness, good flame retardant performance, etc., thus solving the practical problem of rich biomass resources in my country but low utilization rate on the one hand, and on the other hand fundamentally Avoiding the use of adhesives containing formaldehyde toxic substances, exploring and developing new, environmentally friendly and flame-retardant fiberboard production technologies will produce significant economic and social benefits