Study on thermal degradation and combustion behaviors of PC/POSS hybrids
- 作者：Lei Song ; Qingliang He ; Yuan Hu ; Hao Chen ; Lei Liu
- 关键词：Polycarbonate ; Polyhedral oligomeric silsesquioxane ; Melt blending ; Thermal stability ; Combustion behavior
- 刊名：Polymer Degradation and Stability
- 出版年：2008
- 期刊代码：85_01413910
- 类别：ms
- 出版时间：March 2008
- 卷：93
- 期：3
- 页码：627-639
- 文件大小：1268 K
摘要
Polycarbonate/polyhedral oligomeric silsesquioxane hybrids were prepared based on bisphenol A polycarbonate (PC) and trisilanolphenyl-POSS (TPOSS) by the melt blending method. Investigation of transmission electronic microscopy and Fourier transform infrared spectroscopy confirms that the nanoscale TPOSS particles were well dispersed in the PC matrix and there is no chemical reaction between the TPOSS particles and PC matrix during the melt blending. The thermal degradation behaviors of the PC/TPOSS hybrids were investigated. The presence of TPOSS significantly affects the thermal degradation process of PC. The combustion behaviors of the hybrids were evaluated by cone calorimetry experiments. The addition of TPOSS significantly decreased the value of peak heat release rate of the hybrids. Moreover, the addition of TPOSS at 2 wt%leads to the maximum decrease of the PHRR. And scanning electron microscopy and X-ray photoelectron spectroscopy were used to explore the char residues of the pure PC and the hybrids.