基于同步辐射的POSS-聚合物纳米复合材料微观结构与阻燃机理研究

项目名称： 基于同步辐射的POSS-聚合物纳米复合材料微观结构与阻燃机理研究

项目编号： No.U1332134

项目类型： 联合基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 刘磊

作者单位： 东南大学

项目金额： 68万元

中文摘要： 阻燃机理是阻燃材料研究的关键。本项目以多面低聚倍半硅氧烷（POSS）-聚合物纳米复合材料为研究对象，综合利用同步辐射等多种研究手段，基于燃烧全过程的多参数耦合深入研究POSS对聚合物的阻燃机理。通过调节POSS取代基的类型、POSS与聚合物基体的复合方式、比例等来控制材料的组成、分子链结构和微观形貌，实现材料阻燃要求；依据同步辐射WAXS和SAXS的实时原位表征确定复合材料的微观结构在升温条件下（受热引燃前）的演化规律；利用同步辐射单光子电离和分子束质谱，结合常规研究手段，对材料燃烧过程、燃烧特性和燃烧产物进行全面分析。综合复合材料组成、形貌以及受热引燃过程中微观结构-组成-性能的耦合对复合材料燃烧性能的改善和对热稳定性能提高的作用机制，揭示POSS-聚合物复合材料阻燃机理，为新型硅系阻燃材料的发展奠定理论上的基础和积累实验上的经验。

中文关键词： 纳米复合材料；阻燃机理；同步辐射；；

英文摘要： Flame retardant mechanism is a key issue in the study of flame retardant materials. In this project, the flame retardant mechanism of polyhedral oligomeric silsesquioxane (POSS)-polymer nanocomposites is expected to be explored based on the multi-parameter coupling studies in the combustion of process using synchrotron radiation and other necessary means. The composition, the structure of molecular chain and the microscopic morphology of the composite materials can be controlled by changing the types of POSS substituents, the combination type and the molar ratio between the POSS and the polymer substrates, which can meet the flame retardant requirements for nanocomposites; Synchrotron radiation wide-angle X-ray diffraction (WAXS) and small-angle X-ray diffraction (SAXS) are used for the in-situ characterization of the evolution of the composite microstructure with temperature rising (before ignition); The combustion process, the combustion characteristics and the combustion products of nanocomposites are studied by using synchrotron radiation photoionization and molecular beam mass spectrometry combined with other conventional means. Based on the above research, together with analying the composition, the morphology and the microscopic structure-composition-performance coupling law in the heating process before

英文关键词： nanocomposite；fire retardant mechanism；synchrotron radiation；；