Qualitative Analysis of Imidazole Accelerators in Cured Epoxy Resins Using Dynamic Headspace Gas Chromatograph-Mass Spectrometry

Abstract

Synopsis: Dynamic Headspace Gas Chromatograph-Mass Spectrometry (DHSGC-MS) was used to detect and identify imidazole accelerators in cured epoxy resins. We measured the cured epoxy resin including isocyanate-modified imidazole accelerator by DHSGC-MS under various heating sample conditions, and as a result, both imidazole and isocyanate volatiles originating from the accelerator were detected and identified at the sample heating condition of 300℃/15min. This method was used to identify various imidazole accelerators and modified components in cured epoxy resins, as well as in copperclad laminates.