| 聚偏氟乙烯的宽频介电谱特征研究 |
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| 引用本文： | 张营堂,童婷,马飞,袁新强,包维维,郝晓丽,刘立柱. 聚偏氟乙烯的宽频介电谱特征研究[J]. 中国塑料, 2015, 29(8): 48-53. DOI: 10.19491/j.issn.1001-9278.2015.08.008 |
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| 作者姓名： | 张营堂 童婷 马飞 袁新强 包维维 郝晓丽 刘立柱 |
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| 作者单位： | 陕西理工学院 |
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| 摘 要： | 采用熔融法制备了聚偏氟乙烯（PVDF）样品，通过X射线衍射仪、傅里叶变换红外光谱仪和宽频介电谱分析仪对PVDF样品的结构及介电性能进行了测试分析。结果表明，熔融法获得的PVDF主要含α相；在40～100℃范围内出现由玻璃化转变引起的α-PVDF的松弛现象, 在-100～-50 ℃范围内出现的δ-PVDF松弛，是由非晶区分子运动产生的极化现象。
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| 关 键 词： | 聚偏氟乙烯 宽频 介电谱 介电性能 |
| 收稿时间： | 2014-12-29 |
Properties of Broadband Dielectric Spectroscopy(BDS) of Poly(vinylidene fluoride) |
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| Abstract: | In this paper, the structure of poly(vinylidene fluoride)(PVDF) was analyzed by X-ray diffraction(XRD) and Fourier transform infrared(FTIR). It was found that melt crystallized PVDF contained mainly α phases. The dielectric properties of PVDF were investigated by broadband dielectric spectroscopy(BDS) spanning 10-1~107 Hz and -100~100 ℃. There were relaxation peaks of α-PVDF at 40~100 ℃ originated from glass transition and δ-PVDF at -100~-50 ℃ originated from polarization behavior of molecular motion at amorphous regions. |
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| Keywords: | poly(vinylidene fluoride) broadband dielectric spectroscopy dielectric property |
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