A method for preparing a low residual viscosity pressure-sensitive adhesive

Abstract

The present application relates to the technical field of pressure-sensitive adhesives, and specifically discloses a method for preparing a low-residual-viscosity pressure-sensitive adhesive, which comprises: mixing an emulsifier and deionized water to form a primary emulsion, and dividing the mixture into a primary emulsion I and a primary emulsion II; adding methyl methacrylate, butyl acrylate, and a functional monomer to the primary emulsion I, heating and stirring the mixture to form a pre-polymer emulsion, and then adding an initiator to react the mixture; adding a tackifier and a filler to the primary emulsion II, stirring the mixture to form a pre-polymer emulsion, adding a cross-linking agent to react the mixture, cooling the mixture to room temperature, and performing vacuum degassing to obtain the pre-polymer emulsion; the present application not only significantly improves the adhesion, peel strength, and low-residual-viscosity of the pressure-sensitive adhesive, but also helps to improve the water resistance and temperature resistance of the pressure-sensitive adhesive; the obtained pressure-sensitive adhesive has excellent flexibility and durability, good fluidity and processability, can adapt to the harsh environment of high temperature and high humidity, and has broad market prospects.