原位聚合法制备PET/纳米氮化钛改性材料及其性能  

Preparation and Properties of PET/Nano-Titanium Nitride Modification Composite

作　　者：徐文总[1,2] 殷建国[1] 杜先炳[1] 陆波[1] 

机构地区：[1]安徽建筑工业学院材料科学与工程系,安徽合肥230022 [2]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026

出　　处：《塑料》2010年第6期100-104,共5页Plastics

基　　金：安徽省教育厅经费支持(KJ2008B273)

摘　　要：通过原位聚合法制备纳米氮化钛改性PET材料。利用差式扫描量热仪(DSC)研究纳米氮化钛改性PET材料结晶行为和在不同降温速率下的非等温结晶动力学,用Jeziorny方程对非等温结晶过程进行分析;同时利用热重分析仪(TGA)和万能试验机等研究改性材料的热性能和力学性能。结果表明:纳米氮化钛粒子的加入,起到了异相成核作用,改变了PET的成核机理,提高了PET的结晶度和结晶速率;改善了PET材料的热稳定性和力学性能。PET/nano-titanium nitride modification composite was prepared by in-situ polymerization. The crystallization behavior and non-isothermal crystallization kinetics with different cooling rates of PET/nano-titanium nitride modification composite was investigated by DSC. The non-isothermal crystallizing process was analyzed by the Jeziorny method. Thermal behavior and mechanical properties were studied by TGA and universal testing machine. The results showed that the introduced titanium nitride nanoparticles played the role of nucleating agent, changed the nucleation mechanism and increased both the crystallization degree and rate of PET. The thermal stability and mechanical properties of PET were enhanced by the addition of titanium nitride nanoparticles.

关 键 词：纳米氮化钛 原位聚合 非等温结晶 动力学 耐热性 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]