Flame Retardancy and Thermal Degradation Behavior of Epoxy Resin Treated with a Phosphorus and Siliconcontaining Compoun

By : Yi Chen, Wenqin He, Shiqi Chen, Jiangbo Wang

Page No: 329-340

Abstract
In the present work, the flame retardancy and thermal degradation behavior of epoxy resin (EP) treated with a phosphorus and silicon-containing compound (DOPO-V) were investigated. Cone calorimetry measurement revealed that a significant reduction of peak heat release rate (PHRR) and total heat release (THR) of EP/DOPO-V (FREP) relative to the pure EP was achieved. Moreover, the Kissinger and Flynn-Wall-Ozawa methods were used to determine the activation energy for the degradation of pure EP and FREP composites. The kinetic results showed that the addition of DOPO-V decreased the activation energies of the first and middle stage in EP degradation and subsequently increased the activation energies in the final stage. It suggested that during the thermal degradation of FREP, the flame retardant DOPO-V induced the thermal degradation of EP matrix in a relatively lower temperature promotes the char formation. Then it restrained the thermal degradation in the final stage resulting improvement in the flame retardancy of EP composites.

Authors :
Yi Chen, Wenqin He, Shiqi Chen and Jiangbo Wang : School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, China
 

DOI: https://doi.org/10.32381/JPM.2018.35.03.7