Preparation method of adhesive

Abstract

The invention discloses a preparation method of an adhesive. The preparation method comprises adding isolated soy protein into water, enabling the adding ratio to be 10% to 30% by weight, obtaining isolated soy protein solution by even mixing, placing the isolated soy protein solution in an ultrasonic cleaning device and performing ultrasonic processing for 40 minutes to 50 minutes at the temperature of 50 DEG C to 60 DEG C, adding sodium dodecyl sulfate into the isolated soy protein solution, enabling the adding ratio to be 1% to 8% by weight, mixing for 1 hour to 2 hours, then adding in urea and bamboo acetic acid, mixing for 1 hour to 2 hours, enabling the added urea to be 5% to 12% by weight and the added bamboo acetic acid to be 1% to 5% by weight, and obtaining the adhesive by even mixing. The preparation method of the adhesive is a modified process of an isolated soy protein adhesive, ultrasonic waves enable the reaction center of soy protein to be exposed, and chemical modification of sodium dodecyl sulfate and urea are combined to achieve enhancement of bonding strength and hydrophobicity and improvement of water resistance of the adhesive, and the biological antiseptic bamboo acetic acid is combined, thereby improving antibiotic performance.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for preparing an adhesive. Background technique [0002] At present, my country's wood processing adhesives are still dominated by "trialdehyde glue", accounting for more than 80% of the adhesives used in the entire wood and wood-based panel industry. However, such synthetic resin adhesives will continuously release phenol and formaldehyde during production, transportation and use, causing environmental problems. In recent decades, the expansion of the adhesive market, the depletion of petroleum resources worldwide and the increasing concern about environmental pollution have forced the adhesive industry to reconsider the development of new natural adhesives. [0003] Bamboo vinegar is a by-product formed during bamboo charcoal pyrolysis at high temperature. Studies have shown that bamboo vinegar is a natural bacteriostatic agent and insecticide, and it can be used in ...

AI Technical Summary

Problems solved by technology

However, such synthetic resin adhesives will continuously release phenol and formaldehyde during production, transportation and use, causing environmental problems