PP/云母高填充复合材料性能的研究  

Study on Properties of Highly Filled PP/Mica Composites

作　　者：王伟铃[1] 伍玉娇[2,3] 刘昌贵[1] 杨春萍[1] 陈雨玲[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州理工学院,贵州贵阳550003 [3]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》2014年第7期44-48,共5页Plastics Science and Technology

摘　　要：以聚丙烯接枝马来酸酐(PP-g-MAH)为相容剂,采用熔融共混法制备了聚丙烯(PP)/云母填充复合材料,通过力学性能测试以及SEM、DSC等分析手段,对PP/云母高填充复合材料的性能进行了研究。结果表明:适量PP-g-MAH以及云母的添加可有效提高PP的拉伸强度、弯曲强度和弯曲模量,其中,当PP-g-MAH和云母的添加量分别为20%和40%时,PP/云母复合材料具有最佳综合力学性能。另外,随着云母粒径的减小,PP/云母复合材料的拉伸强度提高,冲击强度降低;云母在PP基体中起到了异相成核作用,云母粒径越小,其异相成核作用越强,复合材料的结晶度则越大。Highly filled polypropylene（PP）/mica composites were prepared by melting blend method with PP grafted maleic anhydride（PP-g-MAH） as a compatibilizer. The properties of the highly filled PP/mica composites were studied by mechanical testing, SEM and DSC. The results show that the tensile strength, flexural strength and flexural modulus of PP can be improved effectively by adding a moderate amount of PP-g-MAH and mica, and when the contents of PP-g-MAH and mica are 20% and 40% respectively, the PP/mica composite has the best comprehensive mechanical properties. Additionally, the tensile strength of the PP/mica composites increases with the decrease of mica particle size, but the impact strength decreases. Mica plays a role of heterogeneous nucleation in the PP matrix, the PP/mica composites have the stronger heterogeneous nucleation effect and the higher crystallinity when the particle size of mica decreases.

关 键 词：云母 聚丙烯 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]