Influences of hydrolysis stability of silazane additives on thermal stability of silicone rubber
文献类型：期刊论文
| 作者 | Jiang, J; Zheng, ZM; Peng, WQ; Xu, CH; Xie, ZM |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2002-10-01 |
| 期号 | 5页码:623-627 |
| 关键词 | Silazane Hydrolysis Stability Kinetics Equation Heat Resistance Of Silicone Rubber |
| ISSN号 | 1000-3304 |
| 英文摘要 | A new method was applied to study kinetics of hydrolysis reactions of silazane compounds, which were used as additives in silicone rubbers to improve their thermal stability. It was shown that the hydrolysis reaction was a first-order reaction versus the concentration of the silazane compound. Activation energy (E-a) was calculated for reactions of several silazane compounds with water vapor. It was indicated that activation energy of hydrolysis was closely related with the structure of the silazane compound. The hydrolysis stability would increase when groups around silicon atom or nitrogen atom were of high steric hindrance. Hydrolysis activation energy of hexaphenylcyclotrisilazane 4 was 214 kJ/mol, and that of polymer 5 which contained cyclodisilazane in backbone was 291.3 kJ/mol. Thermal stability of silicone rubber could be improved more effectively when silazanes with higher E-a were used as additives. The weight loss of silicone rubber with compound 4 and 5 as additive was 0.96% and 0.6%, respectively, when aged under 350degreesC for 24 h. |
| 语种 | 英语 |
| WOS记录号 | WOS:000178936800014 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/79239]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jiang, J |
| 作者单位 | Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, J,Zheng, ZM,Peng, WQ,et al. Influences of hydrolysis stability of silazane additives on thermal stability of silicone rubber[J]. ACTA POLYMERICA SINICA,2002(5):623-627. |
| APA | Jiang, J,Zheng, ZM,Peng, WQ,Xu, CH,&Xie, ZM.(2002).Influences of hydrolysis stability of silazane additives on thermal stability of silicone rubber.ACTA POLYMERICA SINICA(5),623-627. |
| MLA | Jiang, J,et al."Influences of hydrolysis stability of silazane additives on thermal stability of silicone rubber".ACTA POLYMERICA SINICA .5(2002):623-627. |
入库方式： OAI收割
来源：化学研究所
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