作　　者： ; ;

机构地区： 中山大学化学与化学工程学院材料科学研究所

出　　处： 《宇航材料工艺》 1992年第3期11-14,共4页

摘　　要： 本文运用示差扫描量热分析和密度测量技术研究了热处理对聚醚砜结构和热行为的影响。结果表明:低于聚醚砜(PES)的玻璃化转变温度下的热处理使聚醚砜的热性能和密度发生变化,其原因可能是热处理使聚醚砜形成了某种类似微晶的局部有序结构;依赖于样品固有的热历史,存在某一特征热处理温度使聚醚砜形成局部有序结构的程度最大。 This paper is concerned with the influence of heat treatment process on the thermal behavior and structure of Polyethersulfone (PES).The results indicate that the glass transition temperature(Tg) of PES increases,an unusual endothermic peak appears in the glass transition region and the densification takes place when PES is heat treated at a certain temperature under its Tg.The position and the areas of the unusual endothermic peak are contrcll(d by the tomperature and the time of the heat treatment process.All these results show that the heat treatment leads to the forming of some new order structure in PES.

关 键 词： 热处理 聚醚砜 热分析 密度

领　　域： [化学工程]