Urea-formaldehyde resin wood adhesive modifier and applications thereof

Abstract

The invention discloses a urea-formaldehyde resin wood adhesive modifier and applications thereof. The urea-formaldehyde resin wood adhesive modifier disclosed by the invention comprises the following components in parts by weight: 1-10 parts of silica particles, 1-10 parts of light calcium carbonate, 1-10 parts of titanium dioxide particles, 0.1-0.5 part of ferric chloride, 1-5 parts of polyethylene glycol, and 0.1-0.5 part of sodium dodecyl sulfate. A urea-formaldehyde resin wood adhesive modified by the modifier is applied to the cementing processing of woods and bamboos, and the veneer strength of a finished product plate is increased by more than 10%, the cost is reduced by about 5%, and the formaldehyde release amount is reduced by more than 20%.

Description

(1) Technical field

[0001] The invention relates to a wood adhesive modifier, in particular to a urea-formaldehyde resin wood adhesive modifier and application thereof. (2) Background technology

[0002] Urea-formaldehyde resin adhesive is widely used in the bamboo wood processing industry because of its reasonable price, good workmanship, and colorless color. However, due to the high brittleness of the adhesive layer after the traditional urea-formaldehyde resin adhesive is cured, especially due to the reaction characteristics in the process of preparing urea-formaldehyde resin, some free components such as free formaldehyde inevitably exist in the adhesive, which brings harm to the environment and the human body. Certain hazards, thus limiting its application. (3) Contents of the invention

[0003] In order to improve the toughness of the urea-formaldehyde resin adhesive, reduce the brittleness of the adhesive layer after curing and reduce harmful components such as fre...