Surface properties and curing mechanism of epoxy resin/siloxane-terminated organic oligomers composite systems

(Epoxy resin) EP was modified with star siloxane-terminated oligomers(TPSi) in order to improve surface properties of epoxy resin.The modified systems were cured with amino curing agent via amino-glycidyl reaction and sol-gel technology.The surface properties and curing mechanism of composite systems with new star siloxane-terminated oligomers were investigated in this passage.It was showed that the composite systems had three different curing mechanisms.The compatibilities of composite systems increased when TPSi was less than 30% in the composite systems.The critical surface intension of composite systems was increased compared with EP-amino curing sample.The critical surface intension of composite systems were improved when KBE-9103 were added in the samples.