论文部分内容阅读
本文采用ＤＳＣ、ＤＴＡ研究复合纳米ＴｉＯ２对酸酥／环氧树脂体系固化反应的影响，测定固化动力学数据，确定固化工艺参数近似值。结果表明：复合纳米ＴｉＯ２可降低树脂固化反应温度，动态ＤＳＣ测定确定含复合纳米ＴｉＯ２的树脂体系固化反应放热量－△Ｈ为１１０Ｊ／ｇ、活化能为５９．１１ｋＪ／ｍｏｌ、反应级数ｎ＝０．９１４及频率因子Ａ＝７．３８×１０４（１／ｓ），固化工艺参数： Ｔ凝胶＝６７℃，Ｔ固化＝１３３℃，Ｔ后处理＝１７７℃。
In this paper, the effects of composite nano-TiO2 on the curing reaction of acid / epoxy resin system were studied by DSC and DTA. The curing kinetics data were determined to determine the approximate curing process parameters. The results showed that composite nano-TiO2 can reduce the curing temperature of the resin, and the dynamic DSC determination of the resin system with composite nano-TiO2 determined the heat of curing - △ H 110J / g, activation energy of 59.11kJ / mol, reaction order n = 0.914 and the frequency factor A = 7.38 × 104 (1 / s). The curing process parameters: T gel = 67 ℃, T curing = 133 ℃, T post treatment = 177 ℃.