A kind of emulsion type acrylic adhesive and preparation method thereof

Abstract

The invention discloses a method for preparing an emulsion-type acrylate adhesive. The preparation of raw gum is as follows: 15-20 parts of isooctyl acrylate, 25-35 parts of butyl acrylate, 1-2 parts of acrylic acid 3-5 parts of vinyl acetate, 0.5-3 parts of emulsifier, 0.1-1 part of disodium hydrogen phosphate, 0.1-1 part of ammonium persulfate, 0.1-0.3 parts of dodecyl mercaptan, 40-50 parts of deionized water Parts, using the semi-continuous drop method to prepare the raw rubber; the composition of the emulsion tackifying resin is as follows: 40-50 parts of rosin tackifying resin, 3-8 parts of emulsifier, 45-55 parts of deionized water; the composition of W adhesive is as follows: W1 5-15 parts of raw gum, 10-30 parts of W2 raw gum, 25-35 parts of W3 raw gum, 30-50 parts of emulsion tackifying resin, 0.5-3 parts of crosslinking agent, and 0.5-3 parts of thickener. The invention provides a low-temperature-resistant double-sided adhesive tape prepared by using the adhesive. The adhesive tape is a solvent-free and environment-friendly adhesive tape with good initial adhesion.

Description

technical field [0001] The invention relates to the technical field of adhesive materials, in particular to an emulsion type acrylic adhesive and a preparation method thereof. Background technique [0002] Emulsion-type acrylic adhesives have the characteristics of environmental protection and pollution-free, a wide range of raw material sources, condensable volatiles and low mass loss rate, and are widely used in many fields such as construction, electronic appliances, and books. Since the acrylic polymer is a thermoplastic resin, the cohesion is not ideal. In order to further improve the cohesion and bonding strength, the performance of the glue is greatly improved by optimizing the formula of the adhesive. However, most adhesives currently have problems such as poor low temperature tolerance, easy loss of components, and poor environmental performance, which to a certain extent restricts the wider application of the above-mentioned adhesives in light industry. Contents ...

AI Technical Summary

Problems solved by technology

However, at present, most adhesives still have problems such as poor low temperature tolerance, easy loss of components, and poor environmental protection performance, which restricts the wider application of the above adhesives in light industry to a certain extent.