| 摘要 |
PURPOSE:To improve heat resistance, thermal shock resistance, dipping property, and flame retardance by a prepreg obtained by reacting bisphenol A-type epoxy resin, novolac-type epoxy resin, and tetrabromobisphenol A. CONSTITUTION:A prepreg is produced by reacting bisphenol A-type epoxy resin, novolac-type epoxy resin, and tetrabromobisphenol A in the process for dipping epoxy resin varnish to a glass non-woven cloth. Namely, each constituent with a low molecule before reaction is applied to the glass non-woven cloth to improve the dipping property to the glass non-woven cloth. Also, by promoting the reaction of each constituent when manufacturing the prepreg, the competitive reaction between the epoxy resin, tetrabromphenol A, and a curing agent is controlled, thus improving migration property, interlayer connection force, flame retardance, drill-machining property, thermal shock resistance, and plate thickness accuracy. |
