Environment protection type multifunction architecture adhesion agent and method for producing the same

Abstract

The invention discloses an environment friendly and multi-functional building adhesive and the preparation method thereof, and is characterized in that: 4 to 5 percent of polyvinyl alcohol and 42 to 59.2 percent of water are taken by weight percentage, stired and heated to 80 plus or minus 2 DEG C until the polyvinyl alcohol is dissolved completely, then cooled to 70 plus or minus 2 DEG C, added with 10 to 20 percent of vinyl acetate-ethylene co-polymer emulsion and 0.4 to 0.6 percent of emulsifying agent; then the mixture is heated to 70 plus or minus 2 DEG C, added with 25 to 30 percent of winyl acetic ester and 0.5 to 1.5 percent of acrylic monomer, and further added with part of 0.25 to 0.3 percent of evocating agent which accounts for 35 to 45 percent of total amount of the evocating agent to carry out emulsion polymerization; the temperature is maintained at 70 plus or minus 2 DEG C, then the residual evocating agent which accounts for 55 to 65 percent of total amount thereof is added; the temperature is kept for 1-2 hours until no nomoner reflows, then the temperature raises to 90 plus or minus 2 DEG C, kept for 30 to 40 minutes, and finally reduced to 50 plus or minus 2 DEG C; the PH value is adjusted and the product is finished after stirring evenly. The invention has the advantages of steady performance, low viscosity coefficient, convenient operation, good stickiness property, good elasticity property, excellent film forming and water-proof property, high drying speed, uneasy going moldy and high biological degradability.

Description

Technical field: [0001] The invention relates to an environment-friendly multifunctional construction adhesive and a preparation method, belonging to the technical field of adhesives. Background technique: [0002] With the development of the economy, synthetic adhesives are increasingly used in various fields. Among the currently used adhesives, many are solvent-based trialdehyde adhesives. Due to the existence of free aldehydes, they have a great impact on environmental pollution. Long-term exposure will also cause the risk of malignant tumors; and the particle size of the polymer colloidal particles prepared by traditional emulsion polymerization is generally small, and the particle size distribution is wide, which cannot meet special needs, such as the polyvinyl acetate currently used Although the emulsion has the characteristics of low price, convenient production, and non-toxicity, it has more disadvantages: when the solid content is high, the viscosity is high and it ...

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, synthetic adhesives are increasingly used in various fields. Among the currently used adhesives, many are solvent-based trialdehyde adhesives. Due to the existence of free aldehydes, they have a great impact on environmental pollution. Long-term exposure will also cause the risk of malignant tumors; and the particle size of the polymer colloidal particles prepared by traditional emulsion polymerization is generally small, and the particle size distribution is wide, which cannot meet special needs, such as the polyvinyl acetate currently used Although the emulsion has the characteristics of low price, convenient production, and non-toxicity, it has more disadvantages: when the solid content is high, the viscosity is high and it is difficult to apply; when the solid content is low, the emulsion is unstable, easy to separate, and the effective storage period Shortening; water resistance, cold resistance and humidity resistance are poor, and mechanical stability is not good; under hot and humid conditions, its bond strength is greatly reduced; film-forming creep resistance is poor