导电相对压电复合材料吸声性能的影响  

Effect of electric conduction phase on acoustic absorption property of the piezoelectric composite

作　　者：蔡俊[1] 周保学[2] 蔡伟民[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150001 [2]上海交通大学环境科学与工程学院,上海200240

出　　处：《复合材料学报》2006年第3期87-90,共4页Acta Materiae Compositae Sinica

基　　金：上海市科技攻关重大项目(03dz12022)

摘　　要：为了研究新型环境声学功能材料,在压电导电原理的基础上,制备了以不同含量炭黑为导电相,以聚氯乙烯为基体材料,以锆钛酸铅为压电相的压电导电吸声复合材料。通过对复合材料体系的动态力学、电学和声学性能的测试分析,探讨了压电导电复合材料体系中压电吸声途径的耗能机制。结果表明,添加体积含量4%炭黑粉的压电复合材料具有最高的吸声性能。In order to research new environmental acoustic materials, the piezoelectric, electric conduction and acoustic absorption composite was prepared by dispersing the carbon black powder（CB） into the polyvinyl chloride （PVC） matrix with lead zirconate titanate（PZT） on the basis of piezoelectricity and electrical conductivity theory. The dynamic mechanical, electric and acoustic properties of the composite were measured and analyzed. The energy dissipation mechanism of piezoelectric and acoustic absorption route of the composite were studied. The results show that the acoustic absorption property of the piezoelectric and electric conduction composite reaches the highest value when the volume fraction of carbon black is 4%.

关 键 词：压电复合材料 导电相 吸声性能 

分 类 号：TB332[一般工业技术—材料科学与工程] O422.4[理学—声学]