THE STRUCTURE AND ELECTRICAL PROPERTIES IN POLYMER-LAYERED SILICATE NANOCOMPOSITES

The polymer-layered silicate nanocom- posites (PLSN) are preparedby the polymer melt interca- lation in layered silicate. By theanalyses of XRD, DSC, IR, NMR and Ac in pedance measurements etc, theex- Perimental results show that polymer (PEO) can intercalate Intothe silicate interlayer in melt state, which leads to the Addition ofthe repeated distance of silicate.

聚对苯二甲酸丁二醇酯-层状硅酸盐纳米复合材料的制备与性能

制备了聚对苯二甲酸丁二醇酯-层状硅酸盐(LS)纳米复合材料(NPBT),并研究了它的结晶特性。LS的剥离片层起结晶成核中心作用并阻碍PBT球晶生长。LS的质量分数为1.0％～10.0％时,NPBT的热变形温度比纯PBT提高30～50℃,结晶速率(1/t_1/2)比PBT提高约30％～100％,加工注模温度显著下降,热降解性能变好。TEM观测表明:NPBT中LS片层的尺度为30～100 nm;3％的粒子发生团聚并与基体相分离。选择适当的处理剂、控制LS加入量和加入方式可减少发生团聚的粒子。