CAJ | 학술논문

将均苯四甲酸二酐与环氧树脂溶于丙酮中，在一定的温度条件下反应，制备了均一的、有一定固化程度的环氧树脂溶液，该溶液可在常温固化。傅里叶变换红外光谱分析表明，所得产物与预期结构相同，最佳反应时间为6?h。采用差示扫描量热法研究其固化工艺，不同升温速率下，体系的固化温度不同，随升温速率增加，固化温度提升，通过动力学计算得到其固化工艺为100?℃固化2?h，150?℃固化2?h，后处理180?℃固化2?h，按此工艺固化的环氧树脂的耐热性能优于常温固化，起始分解温度达到368?℃。
장균분사갑산이항여배양수지용우병동중，재일정적온도조건하반응，제비료균일적、유일정고화정도적배양수지용액，해용액가재상온고화。부리협변환홍외광보분석표명，소득산물여예기결구상동，최가반응시간위6?h。채용차시소묘량열법연구기고화공예，불동승온속솔하，체계적고화온도불동，수승온속솔증가，고화온도제승，통과동역학계산득도기고화공예위100?℃고화2?h，150?℃고화2?h，후처리180?℃고화2?h，안차공예고화적배양수지적내열성능우우상온고화，기시분해온도체도368?℃。
The?epoxy?resin?solution?with?good?uniformity?and?a?certain?curing?degree?was?prepared?by?reac-tion?of?epoxy?resin?with?pyromellitic?dianhydride?dissolved?in?acetone?at?a?certain?temperature,?and?the?solution?could?be?cured?at?room?temperature.?Fourier?transform?infrared?spectroscopy(FTIR)?analysis?showed?that?the?re-sultant?product?had?the?same?structure?as?the?expectation,?and?the?optimum?reaction?time?was?six?hours.?The?study?of?curing?process?by?differential?scanning?calorimetry(DSC)?indicated?that?different?heating?rates?led?to?different?curing?temperatures?of?the?curing?system,?and?the?curing?temperature?increased?with?the?rise?in?the?heating?rate.?According?to?dynamics?calculation?the?curing?process?was?determined?as?follows:?the?epoxy?resin?was?undergone?cure?of?two?hours?at?100,?150?℃,?successively,?and?post?cure?of?two?hours?at?180?℃.?The?heat?resistance?of?the?epoxy?resin?cured?via?the?process?was?superior?to?that?of?the?epoxy?resin?cured?at?room?temperature,?and?the?initial?decomposition?temperature?of?the?former?was?up?to?368?℃.