| 硫酸钙晶须改性氟橡胶复合材料的热稳定性 |
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| 引用本文： | 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[J].复合材料学报,2011,28(4):58-62. |
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| 作者姓名： | 李辉 褚国红 施强 耿兵 张书香 |
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| 作者单位： | 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 |
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| 基金项目： | 山东省重大科技发展计划(2005GG2103011); 山东省自然基金(Z2004f01) |
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| 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。
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| 关 键 词： | 氟橡胶 硫酸钙晶须 热稳定性 表观活化能 热分解 |
| 收稿时间： | 2010-07-27 |
Thermal stability of calcium sulfate whisker modified fluororubber composites |
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| LI Hui,CHU Guohong,SHI Qiang,GENG Bing,ZHANG Shuxiang.Thermal stability of calcium sulfate whisker modified fluororubber composites[J].Acta Materiae Compositae Sinica,2011,28(4):58-62. |
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| Authors: | LI Hui CHU Guohong SHI Qiang GENG Bing ZHANG Shuxiang |
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| Affiliation: | Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China |
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| 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. |
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| Keywords: | fluororubber calcium sulfate whisker thermal stability apparent activation energy thermal decomposition |
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