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UV-induced frontal curing behaviors of epoxy resin systems including not only the photoinitiator but also the thermal initiator were studied.Increase of the content of thermal initiator can increase frontal rate obviously.The frontal curing of EP/PBMA semi-IPN systems were also studied.Compared with pure epoxy resin,the frontal rate of semi-IPN is lower.Without the thermal initiator,the front propagating of the semi-IPN can not be sustained.TG and DSC results showed that the beginning degradation temperature and glass transition temperature decrease with the increase of the BMA weight percent.Carbon fiber fabric reinforced composite materials based on epoxy resin systems were prepared successfully using UV radiation.The epoxy resin matrixes include pure epoxy and EP/PBMA semi-IPN systems.According to the tensile testing results,with the increase of BMA weight percent,the tensile strength of composite decreases gradually.