| 聚偏氟乙烯在动载荷作用下压电特性的研究 |
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| 引用本文： | 孙珠妹,胡栋.聚偏氟乙烯在动载荷作用下压电特性的研究[J].高压物理学报,1989,3(1):78-84. |
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| 作者姓名： | 孙珠妹 胡栋 |
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| 作者单位： | 西南流体物理所
(孙珠妹)，成都科技大学应用物理所(胡栋) |
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| 摘 要： | 本文利用爆炸激波管研究了聚偏氟乙烯（PVF2）在0.01至1 MPa的冲击波作用下的压电特性。实验发现，大约在0.25 MPa附近，压电灵敏度出现急剧下降，然后很快趋于稳定。本文还利用X射线衍射仪观察了冲击载荷下PVF2的晶型变化，X射线衍射结果表明，PVF2在3~4 MPa的冲击波几十次反复作用下晶型不发生明显改变。
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| 关 键 词： | 压电特性 爆炸激波管 晶型 |
| 收稿时间： | 1988-11-29; |
STUDIES OF PIEZOELECTRIC BEHAVIOURS FOR PVF_2 UNDER DYNAMIC LOADINGS |
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| Sun Zhumei.STUDIES OF PIEZOELECTRIC BEHAVIOURS FOR PVF_2 UNDER DYNAMIC LOADINGS[J].Chinese Journal of High Pressure Physics,1989,3(1):78-84. |
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| Authors: | Sun Zhumei |
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| Institution: | Sun Zhumei (Southwest Institute of Fluid Physics)Hu Dong(Institute of Applied Physics. Chengdu University of Science and Technology) |
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| Abstract: | The piezoelectric behaviours of PVF2 (polyvinylidene fluoride) under dynamic loadings (0.01-4 MPa) are studied dy means of explosion shock tube. It is found in the experiments that the piezoelectric sensitivity abruptly decreases for the loading pressures larger than 0.25 MPa, and approaches a constant The crystalline fea-turer of PVF2 under dynamic loadings were observed with a X-ray diffractometer.The results show that it is not obviously changed even undergoing shock loadings of (3 - 4 ) MPa for many times. |
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| Keywords: | piezoelectricity shock tube crystalline feature |
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