...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>e-Polymers >Non-isothermal degradation kinetics for polycarbonate/ polymethylphenylsilsesquioxane composites
【24h】

Non-isothermal degradation kinetics for polycarbonate/ polymethylphenylsilsesquioxane composites

机译：聚碳酸酯/聚甲基苯基倍半硅氧烷复合材料的非等温降解动力学

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The thermal degradation behaviors of PC/PMPSQ (polymethylphenylsilsesquioxane) systems were investigated by thermogravimetric analysis (TGA) under non-isothermal conditions in nitrogen atmosphere. During non-isothermal degradation, Kissinger and Flynn-Wall-Ozawa methods were used to analyze the thermal degradation process. The results showed that a remarkable decrease in activation energy ( E ) was observed in the early and middle stages of thermal degradation in the presence of PMPSQ, which indicated that the addition of PMPSQ promoted the thermal degradation of PC. Flynn-Wall-Ozawa method further revealed that PMPSQ significantly increased the activation energy of PC thermal degradation in the final stage, which illustrated that the PMPSQ stabilized the char residues and improved the flame retardancy of PC in the final period of thermal degradation process.
机译：在非等温条件下，在氮气氛下，通过热重分析（TGA）研究了PC / PMPSQ（聚甲基苯基倍半硅氧烷）系统的热降解行为。在非等温降解过程中，使用了Kissinger和Flynn-Wall-Ozawa方法来分析热降解过程。结果表明，在存在PMPSQ的热降解的早期和中期，观察到活化能（E）显着降低，这表明添加PMPSQ促进了PC的热降解。 Flynn-Wall-Ozawa方法进一步揭示了PMPSQ在最后阶段显着增加了PC热降解的活化能，这说明PMPSQ在热降解过程的最后阶段稳定了焦炭残留并提高了PC的阻燃性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号