磷石膏晶须/PP复合材料的结构与性能研究  

Research on Structure and Performance of PSW/PP Composites

作　　者：刘江[1,2] 石文建[1,2] 刁梦娜[1] 秦军[1,2] 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵州贵阳550003 [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：《塑料科技》2013年第5期71-74,共4页Plastics Science and Technology

基　　金：国家自然科学基金(21266005)

摘　　要：将不同比例的磷石膏晶须（PSW）和聚丙烯（PP）共混制得复合材料,用差示扫描量热仪（DSC）、X射线衍射仪（XRD）和偏光显微镜（POM）表征其结构,然后对复合材料进行力学性能测试。结果表明：PSW能够使PP的α晶晶粒细化,诱导β晶的生成;在PSW含量为5%~25%范围内,随PSW含量的增加,β晶含量呈递增趋势,复合材料的拉伸强度呈小幅度下降趋势;弯曲强度随着PSW含量的增加变化不大,但相对纯PP有大幅提高;缺口冲击强度随PSW含量的增加而提高。Different proportion of phosphogypsum whisker(PSW) and polypropylene(PP) were blended to prepare composites.The structure was characterized by differential scanning calorimetry(DSC) instrument,X-ray diffraction(XRD) and the polarizing microscope(POM),and the mechanical properties of the composites were tested.The results show that: PSW can make α crystal of the PP refine,and β crystal is induced formation,When PSW content is in range of 10%~25%,the content of β crystal increases gradually with the increase of PWS;the tensile strength of the composites decreases slightly;the bending strength changes weakly,but being improved greatly to pure PP;and then impact strength enhances with the content of PSW.

关 键 词：聚丙烯 磷石膏晶须 复合材料 结晶形态 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]