Synthesis of a phosphaphenanthrene/benzimidazole-based curing agent and its application in flame-retardant epoxy resin

• Published in: Polymer degradation and stability Vol. 163; pp. 100 - 109
• Main Authors: Huo, Siqi, Liu, Zhitian, Li, Chuan, Wang, Xiaolei, Cai, Haopeng, Wang, Jun
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 01.05.2019; Elsevier BV
• Subjects: Aminobenzimidazole; Benzimidazole; Carbonization; Chemical synthesis; combustion; Curing agents; Decomposition; epoxides; Epoxy resin; Epoxy resins; Flame retardants; Flame-retardant performances; Free radicals; fuels; High temperature; Phosphaphenanthrene; Phosphorus; Pyrolysis; Smoke; temperature; Thermosetting resins; Epoxy resin; Phosphaphenanthrene; Flame-retardant performances; Benzimidazole

A flame-retardant curing agent (DTA) for epoxy resin (EP), which was constructed by phosphaphenanthrene and benzimidazole groups, was successfully synthesized via one-pot reaction between 2-aminobenzimidazole, terephthalaldehyde, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). DTA ind...