Biomass-base and waterproof wooden adhesive without formaldehyde and its production

Abstract

A non-methanal water-proof wood adhesive with biomass and its production are disclosed. It consists of biomass 10-300 proportion, liquefying agent 50-100 proportion, cross-linking agent and 10-100 proportion. The process is carried out by removing impurities, breaking, pre-treating, adding into liquefying agent, liquefying at 70-300íÒC and ¿C20atm for 5mins-24hrs, adding into cross-linking agent, heating, melting and agitating. It has better water-proof performance.

Description

technical field [0001] The invention relates to a formaldehyde-free water-resistant wood adhesive, in particular to a formaldehyde-free water-resistant wood adhesive based on biomass and a preparation method thereof. Background technique [0002] At present, the three-aldehyde glue "urea-formaldehyde glue, phenolic glue, melamine formal" accounts for more than 95% of wood adhesives, and most of the three-aldehyde glue uses formaldehyde, phenol, benzene, xylene, isocyanate and other toxic and harmful ingredients as raw materials in the production. High-quality trialdehyde wood adhesives contain aldehyde residues. If the process is not properly controlled, it will be very harmful to the environment and human body. There are foreign reports of using soybean protein as raw material and amines as modified groups to prepare formaldehyde-free wood adhesives. However, the competition in the wood processing industry is fierce and profits are thin. Wood adhesives using soybean protein...

AI Technical Summary

Problems solved by technology

There are foreign reports of using soybean protein as raw material and amines as modified groups to prepare formaldehyde-free wood adhesives. However, the competition in the wood processing industry is fierce and profits are thin. Wood adhesives using soybean protein as raw materials are expensive and not suitable for large-scale production. production of wood processing industry

The journal literature of "A New Green Adhesive—A Brief Discussion on Modified Vegetable Protein-Based Wood Adhesive / Chemistry and Bonding. 2003 (4).-179-181" reported that the wood adhesive made of vegetable protein, especially soybean protein Renewable, cheap, wide sources of raw materials, environmental protection and other advantages, the literature also pointed out that the price of wood adhesives made of soybean protein is relatively expensive

This document also points out that the wood adhesives made of other vegetable proteins are involved in many aspects due to industrialization, and there is no major wood adhesive made of other vegetable proteins with strong practicability.