PP/PP-g-MAH/废PCB粉复合材料非等温结晶动力学研究  

Study on Non-isothermal Crystallization Kinetics of Polypropylene Matrix Composites with Maleic Anhydride-grafted Polypropylene and Waste Printed Circuit Boards Nonmetallic Powders

作　　者：熊煦[1] 张枝苗[1] 马立波[1] 龚方红 XIONG Xu;ZHANG Zhimiao;MA Libo;GONG Fanghong(Institute of Chemical and Materials Engineering,Changzhou Institute of Engineering Technology,Changzhou 213164,China;School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州工程职业技术学院化学与材料工程学院,江苏常州213164 [2]常州大学材料科学与工程学院,江苏常州213164

出　　处：《中国塑料》2018年第7期72-77,共6页China Plastics

基　　金：江苏省高等学校大学生创新创业训练计划项目(201613102003Y);常州工程职业技术学院科研重点项目(11130300117007);江苏省产学研前瞻性联合研究项目(BY2016029-05)

摘　　要：利用差示扫描量热法结合Avrami方程研究了聚丙烯(PP)、聚丙烯/聚丙烯接枝马来酸酐/废印刷电路板非金属粉复合材料(PP/PP-g-MAH/废PCB粉)的非等温结晶动力学行为,根据Avrami方程的Jeziorny法和莫志深法对数据进行处理。结果表明,废PCB粉在PP基体中起到异相成核作用,提高了PP的结晶温度,使其成核速率加快,晶粒分布变窄,结晶速率增大,但当废PCB粉含量过多时,复合材料体系黏度会增大,使PP链段扩散迁移并进行规整有序排列的速度受到影响,导致结晶速率下降。The nonisothermal crystallization behaviors and kinetics of polypropylene(PP)matrix composites with maleic anhydride-grafted PP(PP-g-MAH)and waste printed circuit boards(PCB)nonmetallic powders was studied with the Avrami equation using differential scanning calorimetry.The modified Avrami theories from Jeziornys and Mo Zhi-shens equations were adopted to analyze the DSC data.The results indicated that waste PCB powders exhibited a heterogeneous nucleation effect on the crystallization of PP.With increasing the crystallization temperature of PP,the nucleation rate became faster,the grain size distribution became narrower,and the crystallization rate was also improved.However,due to increasing of viscosity of composites,the waste PCB powders also prevented the PP matrix from crystallization at a high loading due to the increase of viscosity of composites.

关 键 词：聚丙烯 废印刷电路板非金属粉 复合材料 差示扫描量热法 非等温结晶动力学 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]