A Study on the Properties of Inorganic Fillers of Poly-DCPD Type a Composite Epoxy Resin

Poly-DCPD type epoxy resin and composite materials were prepared reaction injection molding(RIM) polymerization from polyamide based curing agents(G-5022:G-0930) with inorganic filler(SiO₂, Cu₂O, CuO and CaO). and the effects of composite on the impact strength, flexural strength and surface hardness of the reinforced poly-DCPD type epoxy resin were experimentally examined.
Impact strength and flexural strength increased as the amount of SiO₂ added increased. but decreased at more than 0.6wt%. also surface hardness showed a constant value regardless of the addition amount. and impact strength and flexural strength increased as the size of SiO₂ particles was smaller. it was found that the surface hardness had little effect.
The impact strength, flexural strength and surface hardness were highest when Cu₂O was used as a filler. SiO₂ and CuO were similar to each other. and the curing temperature was increased, impact strength, flexural strength and surface hardness did not changed.