四针状氧化锌晶须和四钛酸钾晶须填充PP复合材料非等温结晶行为  

Non-Isothermal Crystallization Behavior of Polypropylene Composites Filled with T-ZnO_w and K_2Ti_4O_9 Whiskers

作　　者：纪彬彬[1] 温变英[1] 邹燕[1] 

机构地区：[1]北京工商大学材料科学与工程系,北京100048

出　　处：《高分子材料科学与工程》2010年第10期67-71,共5页Polymer Materials Science & Engineering

基　　金：北京市教委科技发展计划资助项目(KM200710011002)

摘　　要：用熔融共混法制备了PP/T-ZnOw和PP/K2Ti4O9两种复合材料,通过差示扫描量热(DSC)测试和偏光显微镜(POM)观察研究了不同含量的PP/T-ZnOw和PP/K2Ti4O9复合材料的结晶行为,并对其进行了对比。结果表明,T-ZnOw对聚丙烯(PP)没有异相成核作用,K2Ti4O9晶须有明显的异相成核作用,T-ZnOw的加入使得PP的结晶温度Tc和熔融温度Tm向低温方向偏移,而K2Ti4O9却仅使PP的Tc向高温方向偏移。两种晶须都没有诱导PP产生新的晶型。力学性能测试表明低含量下,两种晶须对PP都有增强增韧作用,但效果各不相同。PP/T-ZnOw and PP/K2Ti4O9 composites were prepared through melt mixing process. The effect of the whisker＇s content on crystallization behavior of PP/T-ZnOw and PP/K2Ti4O9 composites was investigated by use of differential scanning calorimetry （DSC） analysis and polarization microscope（POM）. Results show that both T-ZnOw and K2Ti4O9 whiskers haven＇t induced a new crystal form. K2Ti4O9 whisker plays the role of heterogeneous nucleation which makes the number of the spherulite increased and the size of the spherulite minished. Whereas,T-ZnOw does not. The Tm and Tc of polypropylene（PP） matrix fall when filled with T-ZnOw,while that raise when filled with K2Ti4O9. Mechanical property test indicates that K2Ti4O9 whiskers show good reinforced effect than T-ZnOw while T-ZnOw whishers show good toughen effect than K2Ti4O9.

关 键 词：聚丙烯 四针状氧化锌晶须 四钛酸钾晶须 结晶行为 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]