Thermal degradation and flammability of P/Si polysilsesquioxane epoxy nanocomposites

✍ Scribed by Yie-Chan Chiu; Chen-Chi M. Ma; Fang-Yi Liu; I-Chen Chou; Chin-Long Chiang; Jeng-Cheng Yang

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 558 KB
• Volume: 114
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.30761

✦ Synopsis

Abstract

A thermal stable epoxy nanocomposite prepared from the 4,4′‐diglycidylether bisphenol A (DGEBA) and the P/Si ladder‐like polysilsesquioxane (PSSQ). The activation energies of thermal degradation were calculated by Kissinger's and Ozawa's methods. The higher ladder‐like PSSQ content not only increase the oligomer content but also generate the steric hindrance. Which steric hindrance influence the epoxy/amine curing reaction of the modified epoxy system was more than the pristine DGEBA epoxy system. The P‐Si synergistic effect on the thermal stability of the nanocomposites was discussed. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009