Abstract
Heterogeneous latices of acrylic core–shell polymers were designed and prepared via a two-stage seeded emulsion polymerization for plastisol–gel of automotive underbody coatings and body sealers. 1,6-Hexanediol diacrylate (HDDA) was introduced to the rubbery core and/or the glassy shell with interpenetrating polymer network (IPN). The latices were characterized by submicron particle sizer, differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The properties of plastisol–gels prepared by mixing the core–shell polymers and DOP/TCP plasticizers were investigated by testing the storage stability of plastisols and the mechanical properties of plastigels. These novel core–shell polymers represent a highly positive innovation and a wide application in automotive industry instead of the hazardous material PVC plastisol.
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