无机填料对PLA树脂热稳定性影响的研究  

Effect of Inorganic Fillers on Thermal Stability of Polylactide

作　　者：邵将[1] 邬昊杰 刘一鸣[1] 陈弦[2] Shao Jiang Wu Haojie Liu Yiming Chen Xian(College of Polymer Science and Engineering, Sichuan University, Chengdu, Sichuan, 610064 College of Chemistry, Sichuan University, Chengdu, Sichuan, 610065)

机构地区：[1]四川大学高分子科学与工程学院,四川成都610064 [2]四川大学化学学院,四川成都610065

出　　处：《现代塑料加工应用》2016年第6期20-23,共4页Modern Plastics Processing and Applications

摘　　要：通过熔融共混工艺制备了聚乳酸(PLA)/无机粒子复合材料。利用热失重分析(TGA)和差示扫描量热仪(DSC)探究了未改性的可回收利用的PLA和PLA/无机粒子复合材料的热性能,并对动态流变行为进行了探究。研究结果表明添加无机粒子可以提升PLA的热稳定性。滑石粉(Talc)可以诱导PLA结晶,但是SiO2和CaCO3却对结晶性能没有影响。PLA共混材料的复数黏度比纯PLA的要高。PLA composites with inorganic particles were prepared by melt-mixing process. Thermal behavior of unmodified recycled PLA material and PLA/ inorganic particles was explored by using thermal gravity analysis （TGA） and differential scanning calorimeter （DSC）. The dynamic rheological behavior was also investigated by means of dynamic theological test. The results showed that thermostability of PLA could be improved by adding inorganic particles. DSC implied that talcum powder （Talc） could induce PLA crystallization, while SiO2 and CaCO3 had no influence on it. The complex viscosity of PLA blends was higher than the one of neat PLA.

关 键 词：无机粒子 热稳定性 聚乳酸 复合材料 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]