超声功率对PP/EVA共混物性能及微观形貌影响  

Effect of Ultrasound Intensity on the Properties and Microstructures of PP/EVA Blend

作　　者：孙静[1] 韦良强[1] 黄安荣[1] 董珈豪 石敏[1] Sun Jing Wei Liangqiang Huang Anrong Dong Jiahao Shi Min(National Engineering Research Center for Compouding and Modification of Polymeric Materials, Guiyang,Guizhou,550014)

机构地区：[1]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：《现代塑料加工应用》2017年第5期6-8,共3页Modern Plastics Processing and Applications

基　　金：国家自然基金(201664004);贵阳市白云区科技计划项目(白科合同[2014]17号)

摘　　要：对乙烯-醋酸乙烯酯(EVA)增韧聚丙烯(PP)共混物在熔融挤出过程中施加一定超声功率,研究超声功率对PP/EVA共混体系微观形貌、力学性能及结晶性能的影响。结果表明:随着超声功率的增大,分散相EVA在PP基体中的尺寸逐渐减小,超声的加入提高了EVA在PP中的分散性;另外,随着超声功率的增大,PP/EVA共混体系的缺口冲击强度先增大后降低;超声的加入提高了共混体系的结晶度。Using ultrasonic devices to deal the PP / EVA blends during the melt ex- trusion process, the effects of ultrasound intensity on the microstructures, mechanical properties and crystallization properties of PP/EVA blend were studied. The results showed that EVA dispersion size decreased with the increasing of ultrasound intensity,and the adding of ultrasonic can improve the dispersion of EVA in the PP matrix. The not- ched impact strength of the PP/EVA blends increased first and then decreased with the in- creasing of ultrasound intensity. The addition of ultrasonic improved the crystallinity of the blend system.

关 键 词：聚丙烯 乙烯-醋酸乙烯酯 超声功率 性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.14[化学工程—合成树脂塑料工业]