Recent advances in highly electrostrictive P(VDF-TrFE-CFE) terpolymers
Recent advances in highly electrostrictive P(VDF-TrFE-CFE) terpolymers
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DOI：
10.1109/tdei.2006.1714941
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发表时间：
2006-10-01
影响因子：
3.1
通讯作者：
Zhang, Q. M.
中科院分区：
文献类型：
--
作者：
Bauer, F.;Fousson, E.;Zhang, Q. M.
铁电材料本质上是多功能的，具有广泛的应用前景。由偏氟乙烯（VDF）、三氟乙烯（TrFE）和1,1 -氯氟乙烯（CFE）组成的新型半结晶三聚体在圣路易研究所（ISL）采用悬浮聚合法制备。相关研究和结果表明，这类电活性聚合物与其他铁电聚合物相比具有独特的性能。该三元共聚物具有较高的电伸缩应变（> = 7%）和较高的模量（> = 0.3GPa）。还观察到，在20 ~ 80℃的温度范围内，大电致伸缩应变几乎是恒定的。高室温相对介电常数（接近50），是所有已知聚合物中最高的)，高诱导极化（接近0.05 C/m(2)）和高击穿场（> 400 MV/m）导致在高压下运行的储能系统具有非常高的体积效率（接近10 J/cm(3)）。
Ferroelectric materials are intrinsically multifunctional and have found a broad range of applications. A new class of semicrystalline terpolymers comprising vinylidene fluoride (VDF), trifluoroethylene (TrFE), and 1, 1-chlorofluoroethylene (CFE), were prepared at Institut de Saint-Louis (ISL) via a suspension polymerization process. Relevant studies and results show that this class of electroactive polymers offers unique properties in comparison with other ferroelectric polymers. The terpolymer exhibits high electrostrictive strain (> 7%) with relatively high modulus (> 0.3GPa). It has been also observed that the large electrostrictive strain is nearly constant in the temperature range from 20 to 80 degrees C. The high room temperature relative dielectric constant (similar to 50), which is the highest among all the known polymers), high induced polarization (similar to 0.05 C/m(2)), and high electric breakdown field (> 400 MV/m) lead to very high volume efficiency for the electric energy storage operated under high voltage (similar to 10 J/cm(3)).