OMMT对PA1212/PP共混物形态结构与力学性能的影响  

Effects of OMMT on Morphology and Mechanical Properties of Polyamide 1212/PP Blends

作　　者：严伟[1,2] 罗军[1] 叶孝勇[1] 杨挺[1] 郭建兵[2] 

机构地区：[1]贵阳学院化学与材料科学系,贵州贵阳550025 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料工业》2012年第10期110-113,共4页China Plastics Industry

基　　金：贵州省科学技术基金(黔科合J字[2010]2009);贵州省教育厅自然科学研究项目(黔教科2010062)

摘　　要：通过熔融挤出法制备了尼龙1212(PA1212)/聚丙烯(PP)(质量比70/30)/有机蒙脱土(OMMT)共混物。采用广角X射线衍射(WAXD)、扫描电子显微镜(SEM)等研究了OMMT在PA1212/PP共混物中的分布状态及其对PA1212/PP共混物形态结构与力学性能的影响。结果表明:在PA1212/PP/OMMT共混体系中,OMMT用量较低时,主要为剥离形态分布,当OMMT用量为7 phr时,OMMT片层主要为插层结构;随OMMT用量的增加,PP分散相尺寸逐渐减小,PA1212/PP/OMMT共混体系的强度逐渐提高,缺口冲击强度呈下降趋势。Polyamide-1212 （PA1212）/PP （70/30）/OMMT blend nanocomposites were prepared by melt extrusion method. The distribution of OMMT in PA1212/PP and its effect on the morphology and mechanical properties of PA1212/PP nanoeomposites were investigated using wide angle X-ray diffraction （WAXD）, scanning electron microscope （SEM） and so on. The results showed that OMMT platelets can be exfoliated in the PA1212/PP blends when the concentration of the OMMT was low. When the amount of OMMT was 7 phr, the OMMT was mainly formed as intercalated structure. The droplet size of PP dispersed phase was gradually reduced when the amount of OMMT increased. Moreover, the strength of PA1212/PP nanocomposites were increased. Notched impact strength tended to decrease.

关 键 词：尼龙1212 聚丙烯 有机蒙脱土 形态结构 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]