Urea resin adhesive capable of removing formaldehyde

Abstract

The invention relates to a urea resin adhesive capable of removing formaldehyde, comprising the following components in part by weight: 100 parts of modified urea resin, 1-5 parts of nano titania, 2-8 parts of tourmaline powder and 0.1-0.5 part of cupric hydroxide. The urea resin adhesive can effectively remove the formaldehyde, minimize the release amount of the formaldehyde when in use, adsorb the off-flavor in the air and has certain health care function.

Description

(1) Technical field [0001] The invention relates to an adhesive, in particular to a urea-formaldehyde resin adhesive capable of eliminating formaldehyde. (2) Background technology [0002] Adhesives are an indispensable material for modern industry and national defense industry. Among them, wood adhesives account for more than 60% of the total output of adhesives. With the continuous development of wood processing industry, the amount of adhesives is increasing, and the varieties are also increasing. After the country promulgated 10 mandatory standards of "Limits of Hazardous Substances in Interior Building Decoration Materials", environmental protection has become a hot topic in the adhesive industry. Requirements from the living room environment represented by the prevention of sick building syndrome are the biggest issues in the adhesive industry today. Although the cause of the disease is not yet clear, it may be caused by formaldehyde, organic solvents, or plasticizers...

AI Technical Summary

Problems solved by technology

However, wood processed with traditional urea-formaldehyde resin adhesives generally has two major problems: one is that the formaldehyde gas released from the board pollutes the environment, and formaldehyde is very toxic to humans and warm-blooded animals. If humans drink water polluted by formaldehyde for a long time, Can cause dizziness, anemia, and various neurological disorders

The second is poor water resistance, especially poor boiling water resistance, which greatly limits the application of urea-formaldehyde resin adhesives

The current popular method of combining photocatalytic technology with activated carbon technology is to use the adsorption function of activated carbon to increase the local mass concentration of the catalyst surface under the condition of low pollutant mass concentration, thereby improving the photocatalytic activity under the condition of indoor low pollutant mass concentration. Removal efficiency, but due to the impact of pollutant residence time, the amount of pollutant treatment is limited