Study On Preparation And Properties Of Soft-anti-dirt Polyacrylate Flocking Adhesive

As adhesive, polyacrylate emulsion has strong adhesion, wide bonding range,pollution-free and so on fine performance and is widely applied.This subject is on the basis ofthe acrylic emulsion research and flocking adhesive application status,First of all,design areasonable formula depending on the application requirements,optimize the polymerizationtechnology,with the conventional emulsion polymerization to stability synthesize the soft typeacrylate emulsion compliance with this topic the first requirement.In the process ofpreparation,the influences of polymerization method,polymerization temperature,the amountof the emulsifiers and evocating agent, the speed of stirring on the course of reaction andemulsion performance was delved. The best emulsion polymerization technology wasdetermined.That is,using the pre-emulsion seed polymerization,the amount of emulsifier was4%,the amount of evocating agent was 0.4%,the reaction temperature was 80±2℃,thestirring rate was controlled at about 200r/min.The latex was tested in accordance with thetesting standards,the test result showed that many deficiency such as the emulsion filmforming speed too fast, water resistance is not good,sticky in hot and crisp in cold,notconducive to processing applications and so on was existed.In response to these shortcomings of the Latex,This article was based on the designprinciple of the molecular structure.The design of formulation was improved andpolymerization conditions was purposefully controlled.The core-shell acrylic emulsion wasprepared by core-shell emulsion polymerization.The shortcomings of conventional acrylatecopolymer emulsion as flocking adhesive was solved.The overall performance of the acrylicester emulsion was enhanced.The influences of proportion of core-shell monomers, emulsifierin a two-stage use ratio, polymerization method , the initiator and functional monomer on the emulsion properties and adhesive properties was discussed by a variety of decision tools andtest methods.The results show that the problem of the traditional flocking adhesive wasprone to occur blockage in productive application and reduce productive efficiency waseffectively solved by this core-shell emulsion polymerization.The advantages of the emulsionsuch as adhesive properties, feel soft, cold-resistant, waterproof and breathable etc.can be stillmaintained.