Kinetics and mechanistic investigation of epoxy-anhydride compositions cured with quaternary phosphonium salts as accelerators
作者:Lyaysan R. Amirova、Alexander R. Burilov、Liliya M. Amirova、Ingmar Bauer、Wolf D. Habicher
DOI:10.1002/pola.27946
日期:2016.4.15
Mechanism and curing kinetics of bisphenol A epoxy resin–iso‐methyltetrahydrophthalic anhydride compositions using quaternary phosphonium salts as accelerators were investigated by differential scanning calorimetry (DSC) and electrospray mass‐spectrometry (ESI‐MS). The DSC method was applied to investigate curing kinetics and apparent activation energy values for the overall curing process. The DSC
双酚A环氧树脂-异氰酸酯的机理和固化动力学通过差示扫描量热法(DSC)和电喷雾质谱(ESI-MS)研究了使用季phospho盐作为促进剂的甲基四氢邻苯二甲酸酐组合物。DSC方法用于研究整个固化过程的固化动力学和表观活化能值。DSC结果表明,某些the盐导致较低的活化能,这意味着它们是固化环氧酸酐体系的更有效的促进剂。使用表氯醇(E)与邻苯二甲酸酐(PA)在of盐或2-甲基咪唑存在下的模型反应,通过ESI-MS研究了固化机理。可以鉴定出以烷基酯形式包含containing盐的烷基部分的产物。这表明phospho盐通过亲电子攻击活化了酸酐。©2015 Wiley Periodicals,Inc. J. Polym。科学,A部分:Polym。化学2016,54,1088年至1097年