硫酸钙晶须改性氟橡胶复合材料的热稳定性

李辉; 褚国红; 施强; 耿兵; 张书香

硫酸钙晶须改性氟橡胶复合材料的热稳定性

济南大学化学化工学院, 山东省氟化学化工材料重点实验室, 济南 250022

基金项目: 山东省重大科技发展计划(2005GG2103011); 山东省自然基金(Z2004f01)

详细信息

通讯作者:
张书香, 教授, 从事含氟材料的研究与开发 E-mail: ujn_zhangsx@yahoo.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2010-07-26
- 修回日期: 2010-12-25
- 刊出日期: 2011-08-14

Thermal stability of calcium sulfate whisker modified fluororubber composites

Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China

摘要

摘要: 采用热分析技术研究了在氮气气氛中硫酸钙晶须(CSW)/氟橡胶(FPM)复合材料的非等温热分解行为及其动力学, 并与无水硫酸钙(ACS)/氟橡胶(FPM)复合材料进行了对比。通过Kissinger法和Ozawa法分别计算出其热分解活化能, 且结果相近。结果表明: Kissinger法计算的CSW/FPM复合材料的热分解活化能为203.33 kJ·mol^-1, 高于ACS/FPM复合材料的热分解活化能(174.74 kJ·mol^-1), 具有较高的热稳定性; 热分解反应级数约为1级。随着失重率的增大, 热分解活化能增大。
- 氟橡胶 /
- 硫酸钙晶须 /
- 热稳定性 /
- 表观活化能 /
- 热分解
Abstract: The non-isothermal degradation behaviors of calcium sulfate whisker (CSW)/fluororubber(FPM) composites in nitrogen were investigated compared with those of anhydrous calcium sulfate(ACS)/(FPM) composites by TG and DTG. The kinetic parameters were evaluated by differential method and integral method. The results show that the apparent activation energy E of CSW/FPM composites calculated by differential method is 203.33 kJ·mol^-1, higher than that of ACS/FPM composites(174.74 kJ·mol^-1) and the results suggest that CSW/FPM composites have better thermal stability. The thermal decomposition reaction orders are of the order of 1. The thermal decomposition apparent activation energy E increases with increasing mass loss.
- fluororubber /
- calcium sulfate whisker /
- thermal stability /
- apparent activation energy /
- thermal decomposition