Synthesis and Characterization of Chlorinated Bisphenol-Based Polymers andPolycarbodiimides as Inherently Fire-Safe Polymers

摘要

Two different types of polymers were synthesized and their degradation andcombustion behavior were investigated. The first class, 1,1-dichloro-2, 2-(4-hydroxyphenyl) ethylidene(Bisphenol C) based polymers, were found to be among the most fire-resistant polymers with peak heat release capacities as low as 20 J/g-K. Polymers containing bisphenol C all exhibited exothermic decomposition behavior. When compared to corresponding bisphenol-A-based polymers, these bisphenol-C-containing polymers had higher char yields and lower decomposition temperatures. The second class of polymers studied were polycarbodiimides, which generally decompose in an endothermic manner toyield quantitative amounts of monomer.