Adhesion agent for artificial board and method of producing the same

Abstract

The invention relates to an adhesive used for an artificial board and a preparation method thereof. The invention is characterized in that the artificial board consists of water, acid, chitosan, phenol and enzyme; the detail steps of the preparation technique are as follows: 70 to 100 portions of water, 0.01 to 6 portions of acid and 0.01 to 12 portions of flexible components are added into a stainless steel kettle; the temperature is between 10 and 80 DEG C; a stirring machine is started for uniformly mixing at a speed of 400r / min; 0.01 to 45 portions of phenol are added for stirring; the pH is adjusted to be 3 to 8; 1 to 10 portions of enzyme is added for continuously stirring; enzyme treatment time is between 0.1 minute and 48 hours; after the viscidity of the adhesive is 4 cups for 20 to 100 seconds, stirring is stopped; and then an opening is sealed for storage. The adhesive used for the artificial board does not contain formaldehyde, has no poison and smells during the production and use processes, does not release harmless gases, is safe and environmental friendly; the used chitosan is natural product which can be decomposed and recycled; in the invention, biocatalysis and biological transformation technologies are applied to wood industry; and bio-enzyme catalytic polymerization is adopted for preparing the adhesive and can be carried out under normal temperature and pressure.

Description

technical field [0001] The invention relates to an adhesive for wood-based panels and a manufacturing method thereof. Background technique [0002] With the continuous improvement of human quality requirements for environmental protection, the pollution of free formaldehyde in wood-based panels has been paid more and more attention. As we all know, since the production of wood-based panels such as fiberboard, medium density fiberboard (MDF), and particle board requires the use of formaldehyde-based resin adhesives such as urea-formaldehyde resin, phenolic resin, and melamine-formaldehyde resin, these adhesives, especially urea-formaldehyde resin, are glued together. Products will release free formaldehyde during use, polluting the environment and endangering human health. In a high-concentration formaldehyde environment, people will feel difficulty in breathing, sore eyes and tears, and long-term exposure to a high-concentration formaldehyde environment can reduce people's ...

AI Technical Summary

Problems solved by technology

Among them, a large number of unqualified wood-based panels flow into the market. Every year, many cases of indoor decoration pollution caused by unqualified wood-based panels caused by free formaldehyde appear in the newspapers, seriously affecting people's life safety and physical and mental health.

[0003] The current measures to solve the formaldehyde release of wood-based panels: one is to reduce the free formaldehyde content in the adhesive and develop wood-based panel products with low formaldehyde release, but it cannot completely eliminate formaldehyde release; the other is to use non-formaldehyde series adhesives such as isocyanate, although it can solve formaldehyde Release problem, but its toxicity and irritation before curing still endanger the health of operators