笼型倍半硅氧烷对膨胀型阻燃聚乳酸复合阻燃性能和热降解行为的协效研究

宣善勇; 胡源; 宋磊; 王鑫; 杨宏宇; 鲁红典

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Synergistic effect of polyhedral oligomeric silsesquioxane on the flame retardancy and thermal degradation of intumescent flame retardant polylactide

首发时间：2011-12-19

XUAN Shanyong ¹
Xuan Shanyong, (1980-), Male, Doctor, main research is flame retardant biodegradation polymers.
HU Yuan ²
HU Yuan (1965.06-), Male,Professor, doctoral supervisor,main research direction: flame retardant polymer composites, synthesis of novel flame retardants, biodegradable polymer materials, evaluation of fire safety
SONG Lei ² WANG Xin ²
WANG Xin (1986.10-), Male, Ph.D candidate, main research direction: flame retardant polymer composites
YANG Hongyu ² LU Hongdian ²

1、State Key Laboratory of Fire Science, University of Science and Technology of China, HeFei 230027
2、State Key Laboratory of Fire Science, University of Science and Technology of China

Abstract：In this study, intumescent flame retardant polylactide/trisilanolisobutyl polyhedral oligomeric silsesquioxane (PLA/TPOSS) composites were prepared via melt blending method. The morphology of the PLA nanocomposites was assessed by transmission electron microscopy (TEM). The flame retardancy of the PLA/TPOSS composites was evaluated by limiting oxygen index (LOI) test and UL-94 test. It was observed that the addition of TPOSS had evident flame retardant effect in comparison to the results obtained from neat PLA. The PLA nanocomposite showed a 69 % reduction of heat release capacity (HRC) when tested in the microscale combustion calorimeter (MCC). Thermalgravimetric analysis (TGA) showed the incorporation of intumescent flame retardant and TPOSS had effectively delayed the thermo-oxidation process of the PLA. The thermal degradation mechanisms of the PLA/TPOSS composites were investigated by thermogravimetric analysis/infrared spectrometry (TG-IR) and direct pyrolysis/mass (DP-MS) analysis.

keywords： Polylactide Polyhedral oligomeric silsesquioxane Thermal degradation Flame retardancy

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笼型倍半硅氧烷对膨胀型阻燃聚乳酸复合阻燃性能和热降解行为的协效研究

宣善勇 ¹
Xuan Shanyong, (1980-), Male, Doctor, main research is flame retardant biodegradation polymers.
胡源 ²
HU Yuan (1965.06-), Male,Professor, doctoral supervisor,main research direction: flame retardant polymer composites, synthesis of novel flame retardants, biodegradable polymer materials, evaluation of fire safety
宋磊 ² 王鑫 ³
WANG Xin (1986.10-), Male, Ph.D candidate, main research direction: flame retardant polymer composites
杨宏宇 ² 鲁红典 ²

1、中国科学技术大学火灾科学国家重点实验室，合肥 230027
2、State Key Laboratory of Fire Science, University of Science and Technology of China
3、中国科学技术大学火灾科学国家重点实验室

摘要：目的：提出一种具有阻燃性能的聚乳酸复合材料的制备方法。方法：通过熔融共混将膨胀型阻燃剂及笼型倍半硅氧烷（POSS）加入到聚乳酸基体中。结果：TEM表明POSS在聚乳酸基体中具有良好的分散性；微型量热测试表明POSS的引入可以明显降低材料的热释放速率峰值和总热释放量；热重分析表明POSS能够有效延迟聚乳酸的热氧化过程，提高炭层的稳定性；热重-红外联用和直接进样-质谱分析了复合材料的热降解过程。结论：POSS和膨胀型阻燃剂在聚乳酸中存在协效阻燃作用，POSS的引入一方面可以捕捉活性自由基，另一方面有助于提高炭层的热稳定性，阻止内部聚合物进一步降解，从而使燃烧中止。

关键词：聚乳酸笼型倍半硅氧烷热降解阻燃

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XUAN Shanyong,HU Yuan,SONG Lei,et al. Synergistic effect of polyhedral oligomeric silsesquioxane on the flame retardancy and thermal degradation of intumescent flame retardant polylactide[EB/OL]. Beijing:Sciencepaper Online[2011-12-19]. https://www.paper.edu.cn/releasepaper/content/201112-475.

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论文编号	201112-475
论文题目	笼型倍半硅氧烷对膨胀型阻燃聚乳酸复合阻燃性能和热降解行为的协效研究
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