| 聚丙烯蜂窝膜驻极体压电系数的测量及压电性的改善 |
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| 引用本文： | 张鹏锋,夏钟福,邱勋林,吴贤勇.聚丙烯蜂窝膜驻极体压电系数的测量及压电性的改善[J].物理学报,2005,54(1):397-401. |
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| 作者姓名： | 张鹏锋 夏钟福 邱勋林 吴贤勇 |
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| 作者单位： | 同济大学波耳固体物理研究所，上海 200092 |
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| 基金项目： | 国家自然科学基金 (批准号 :5 0 0 73 0 16)，德国大众汽车基金会 (批准号:1 773 65 )资助的课题~~ |
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| 摘 要： | 利用介电谐振谱分析了聚丙烯蜂窝状原生膜(PPCellular,PQ50型)的力学及介电参数，测得其压电系数d33约为18pC/N.经合理的压力膨化工艺处理后，其d33可增加至367pC/N，比久负盛名的铁电聚合物聚偏氟乙烯(PVDF)的d33高20倍以上，也高于压电陶瓷锆钛酸铅(PZT)的相应值.结合扫描电镜照片及根据PP蜂窝膜压电理论模型分析了这类空间电荷型非极性孔洞薄膜驻极体呈现高压电系数的结构和物理根源.
关键词：
聚丙烯蜂窝膜
压电性
介电谐振
压力膨化处理
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| 关 键 词： | 聚丙烯蜂窝膜 压电性 介电谐振 压力膨化处理 |
| 收稿时间： | 2004-07-21 |
| 修稿时间： | 9/2/2004 12:00:00 AM |
The measurement of piezoelectric coefficient for PP cellular electret and the improvement of its piezoelectricity |
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| Zhang Peng-Feng,Xia Zhong-Fu,Qiu Xun-Lin and Wu Xian-Yong.The measurement of piezoelectric coefficient for PP cellular electret and the improvement of its piezoelectricity[J].Acta Physica Sinica,2005,54(1):397-401. |
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| Authors: | Zhang Peng-Feng Xia Zhong-Fu Qiu Xun-Lin and Wu Xian-Yong |
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| Abstract: | In this paper, mechanical and dielectric parameters of virgin PP cellular film(t ype PQ50) were analyzed by dielectric resonance spectroscopy, and piezoelectric d33 coefficient of 18pC/N was measured. Up to 367pC/N of piezoelectric d33 coefficient for PP cellular electret was performed by means of pr essure-expansion techniques under the reasonable treatment conditions, which is about 20 times higher than that of famous ferroelectric polymer β-PVDF and whic h is higher than that of piezoelectric ceramic PZT. Based on scanning electron m icrograph and according to the piezoelectric theory model for PP cellular film t he structural and physical sources for high piezoelectric coefficient of these k inds of nonpolar porous film electret with space charge were discussed. |
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| Keywords: | polypropylene cellular film piezoelectricity dielectric resonance pressure-expansion treatment |
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