辐照交联聚丙烯压电功能膜的机电性能  

Electromechanical properties in irradiation cross-linked polypropylene films

作　　者：张欣梧[1,2,3] 娄可行[1] 王家兴[1,2] 张露娇[1,2] 张冶文[1,3] 张晓青[1,3] 

机构地区：[1]同济大学物理系,上海市特殊人工微结构材料及技术重点实验室,上海200092 [2]同济大学材料科学与工程学院,上海201804 [3]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《功能材料》2011年第11期2078-2080,2084,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50873078);电力设备电气绝缘国家重点实验室资助项目(EIPE11203);同济大学SITP资助项目(SITP2010)

摘　　要：研究了基于辐照交联聚丙烯(XPP)的压电驻极体功能膜的机电性能。利用介电谐振谱测定了XPP膜的弹性模量;通过准静态方法测量了该功能膜的压电系数d33及其压强特性曲线;对压电相应的时域谱进行了分析;最后讨论了该功能膜的力学疲劳特性。结果表明XPP压电驻极体膜的弹性模量为1.3MPa,压电系数d33在10～100kPa的压强范围内都具有良好的线性度;时域谱揭示了XPP膜的粘流特性;XPP膜的输出电压和压力呈现良好的线性关系;经历60万次的循环力载荷,压电系数d33没有明显的变化。The electromechanical properties of the piezoelectrets based on the irradiation cross-linked polypropylene（XPP） were investigated.The modulus of elasticity of the XPP films were determined from the dielectric resonance spectra.The piezoelectric d33 coefficients in such piezoelectret films were measured by using quasi-static method.The time spectrum of piezoelectric response was analyzed.The experiments of the mechanical fatigues in the XPP piezoelectret films were also taken.The result shows that the modulus of elasticity of the XPP films is around 1.3MPa.The d33-coefficients exhibit good linearity in the range of applied pressure from 10 to 100kPa.The time spectrum of piezoelectric response reveals a viscous flow feature in XPP films.The relation between the output voltage and applied force is linear.No significant change in d33 coefficients was observed after 600 thousand cycles of applying force.

关 键 词：机电性能 压电驻极体 交联聚丙烯 

分 类 号：O484.4[理学—固体物理]