Damp-heat-resistant soybean-based board adhesive and preparation method thereof

Abstract

The invention discloses a damp-heat-resistant soybean-based board adhesive. The adhesive is prepared from, by weight, 2-3 parts of polymaleic anhydride, 2-4 parts of polyvinyl alcohol, 170-200 parts of defatted soybean powder, 0.3-0.4 part of ferric chloride, 0.1-0.2 part of ferrous chloride, 0.8-1 part of epoxy chloropropane, 2-3 parts of N-hydroxymethyl acrylamide, 16-20 parts of styrene, 0.1-0.2 part of potassium persulfate, 3-4 parts of hemicellulase, 10-19 parts of 4,4'-diphenylmethane diisocyanate, 60-70 parts of 20-30% hydrochloric acid solution, 0.6-1 part of ammonium alcohol ether sulphate, 2-4 parts of palm wax, 0.6-1 part of 2,2-dimethylolpropionic acid, 0.01-0.02 part of stannous octoate, 0.01-0.02 part of divinyl benzene, 4-6 parts of zirconium oxychloride octahydrate and the like. The adhesive has the advantages that equipment is not likely to be corroded, pot-life storage life is long, the adhesive is free of formaldehyde, the residual monomer content is low, and water resistance is good.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a heat-and-humidity resistant soybean substrate adhesive and a preparation method thereof. Background technique [0002] Aldehyde adhesives are used in the largest amount in wood industry adhesives, but they have many disadvantages: the main raw materials are mostly from non-renewable resources such as petroleum and coal; carcinogens (such as formaldehyde) are continuously emitted during production and use, which will harm the human body Healthy; the product is non-degradable and easy to pollute the environment. Therefore, the research and development of biomass-based adhesives to replace aldehyde-based adhesives has received global attention. Among various biomass materials, soybeans (including genetically modified soybeans) have the characteristics of large yield, low cost, and high plant protein content, and are good raw materials for adhesives; study soybean-based adhesive...

AI Technical Summary

Problems solved by technology

[0002] Aldehyde adhesives are used in the largest amount in wood industry adhesives, but they have many disadvantages: the main raw materials are mostly from non-renewable resources such as petroleum and coal; carcinogens (such as formaldehyde) are continuously emitted during production and use, which will harm the human body Healthy; the product is non-degradable and easy to pollute the environment

[0005] The current research methods all focus on modifying the soybean protein in it, but do not involve 40% carbohydrates, causing this component to have no effect on the water resistance of the adhesive after curing, or even have a negative effect, and waste raw materials