期刊
POLYMER DEGRADATION AND STABILITY
卷 85, 期 1, 页码 725-731出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2004.03.018
关键词
polymethylphenylsiloxane; polysilazane; triethanolamine; thermal stability; tbermogravimetric analysis
Two kinds of curing agents, triethanolamine and polysilazane (KH-CL), were used to make polymethylphenylsiloxne (PMPS) cured at room temperature. Their effects on the short-term and long-term thermal stability of PMPS are reported and discussed. The influences of the curing agents on the thermal degradation mechanisms of PMPS were studied by thermogravimetric analysis (TG), differential thermogravimetry (DTG) and Fourier-transform infrared spectroscopy (FTIR). The results indicate that both kinds of PMPS had higher short-term thermal stability than traditional heat-cured PMPS. For long-term thermal stability, the PMPS cured with KH-CL was much higher than the one cured with triethanolamine. The unzip degradation of PMPS was eliminated through the reaction between KH-CL and silanol groups, and then the thermal stability of PMPS was improved. However, it was initiated at a low temperature (about 300 degreesC) with catalysis by triethanolamine, and the thermal stability was decreased. (C) 2004 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据