导电相对压电复合材料吸声性能的影响

基金项目: 上海市科技攻关重大项目(03dz12022)

详细信息

Effect of electric conduction phase on acoustic absorptionproperty of the piezoelectric composite

1.
School of Municipal and Environment Engineering| Harbin Institute of Technology| Harbin 150001| China ;
2.
School of Environment Science and Engineering| Shanghai J iao Tong University| Shanghai 200240| China

摘要

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。
- 压电复合材料 /
- 导电相 /
- 吸声性能
Abstract: In order to research new environmental acoustic materials , the piezoelect ric , elect ric conduction andacoustic absorption composite was prepared by dispersing the carbon black powder (CB) into the polyvinyl chloride( PVC) mat rix with lead zirconate titanate ( PZT) on the basis of piezoelect ricity and elect rical conductivity theory.The dynamic mechanical , elect ric and acoustic properties of the composite were measured and analyzed. The energydissipation mechanism of piezoelect ric and acoustic absorption route of the composite were studied. The result s showthat the acoustic absorption property of the piezoelect ric and elect ric conduction composite reaches the highest valuewhen the volume f raction of carbon black is 4 %.
- piezoelect ric composite /
- elect ric conduction phase /
- acoustic absorption property