STRUCTURE AND ADHESIVE PROPERTIES OF EPOXY-RESINS MODIFIED WITH CORE SHELL ACRYLIC PARTICLES/

The morphology and physical properties of dicyandiamide (DICY)-cured e poxy resins modified with ion-crosslinked core/shell acrylic particles were studied. The modified epoxy resins displayed excellent adhesion and semi-gelling properties simultaneously. When an epoxy resin derive d from ethylene oxide and bisphenol A was used as a reactive diluent i n this system, both the adhesion strength and the impact strength incr eased. This result is attributed to relaxation of the internal stress of the cured epoxy resin as a result of using a flexible epoxy resin.