Properties of The Crystalline Cured Polymers Obtained from EpoxyResin Having Diphenylene Ether Structure and Aromatic Diamine

Abstract

It has been found that a crystalline cured polymer is obtained by the reaction of 4,4'-oxybis(glycidyloxybenzene) (OBGB) having a diphenylene ether structure and 4,4'-oxybisphenol (OBP). As a result of examining the combined use of OBP and 4,4'-diaminodiphenyl sulfone (DDS) as a curing agent, it was confirmed that crystalline cured polymers were obtained up to DDS ratio of 30 wt% in the curing agent. The use of DDS improved the glass transition temperature and the thermal conductivity, and reduced the coefficient of liner thermal expansion and water absorption due to the crystallinity.