对聚偏氟乙烯进行高温电极化处理以改善半晶聚合物的铁电性,研究了其铁电极化值随着极化电场的连续非线性变化,实现了结晶相中非铁电相向铁电相的转变.用动力学平衡方法模拟了聚偏氟乙烯样品的电场极化相变过程,结果表明:聚偏氟乙烯中结晶区域的有效极化电场约为50 MV/m,与铁电聚合物的矫顽电场吻合;非晶无定型区域的等效电场与实验的相变开启电场接近,并得到了理论与实验符合较好的结果,从而证明动力学平衡方法模拟聚偏氟乙烯铁电相变的可行性.
参考文献
| [1] | S.H.Yao,Z.M.Dang,H.P.Xu,M.J.Jiang,J.B.Bal,Exploration of dielectric constant dependence on evolution of microstructure in nanotubes/ferroelectric polymer nanocomposites,Appl.Phys.Lett.,92(8),082902(2008) |
| [2] | J.Xu,M.Johnson,G.Wilkes,A tubular film extrusion of poly(vinylidene fluoride):Structure/process/property behavior as a function of molecular weight,Polymer,45(15),5327(20O4) |
| [3] | S.B.Lang,S.Muensit,Lesser-known piezoelectric and pyroelectrie applications of electroactive polymers,Mater.Res.Soc.Symp.Proc.,899,3(2006) |
| [4] | K.Takashima,S.Horie,T.Mukai,K.Ishida,K.Matsushige,Piezoelectric properties of vinylidene fluoride oligomer for use in medical tactile sensor application,Sens.Actuators A Phys.,144(1),90(2008) |
| [5] | W.Y.Chang,C.H.Chu,Y.C.Lin,A flexible piezoelectric sensor for microfluidic applications using polyvinylidene fluoride,IEEE Sensors J.,8(5),495(2008) |
| [6] | M.Toda,J.Dahl,PVDF corrugated transducer for ultrasonic ranging sensor,Seus.Actuators A Phys.,134(2),427(2OO7) |
| [7] | B.Mohammadi,A.A.Yousefi,S.M.Bellah,Effect of tensile strain rate and elongation on crystalline structure and piezoelectric properties of PVDF thin films,Polym.Test.,26(1),42(2007) |
| [8] | J.R.Gregorio,Determination of the α.β,and γ crystalline phases of poly(vinylidene fluoride) films prepared at different conditions,J.Appl.Polym.Sci.,100(4),3272(2006) |
| [9] | C.H.Du,B.K.Zhu,Y.Y.Xu,Effects of streching on crystalline phase structure and morphology of hard elastic PVDF fibers,J.Appl.Polym.Sci.,104(4),2254(2007) |
| [10] | B.E.EI.,-Mohajir,N.Heymans,Change in structural and mechanical behaviour of PVDF with processing and thermomechanieal treatments.1.Change in structure,Polymer,42(13),5661(2001) |
| [11] | FU Wangli,DU Piyi,WENG Wenjian,HAN Gaorong,Preparation and structure of PVDF piezoelectric film,Chinese Jouranl of Materials Research,19(3),243(2005)(傅万里,杜丕一,翁文剑,韩高荣,聚偏氟乙烯压电薄膜的制备及结构,材料研究学报,19(3),243(2005)) |
| [12] | W.A.Yee,M.Kotaki,Y.Liu,X.H.LIn,Morphology,polymorphism behavior and molecular orientation of electrospun poly(vinylidene fluoride) fibers,Polymer,48(2),512(2007) |
| [13] | Y.Abe,K.Tashiro,M.Kobayashi,Computer simulation of structural changes in the ferroelectric phase transition of vinylidene fluoride-trifluoroethylene copolymers,Comput.Theor.Polym.SeL,10,323(2000) |
| [14] | B.Mohammadi,A.A.Yousefi,S.M.Bellah,Effect of tensile strain rate and elongation on crystalline structure and piezoelectric properties of PVDF thin films,Polym.Test.,26(1),42(2007) |
| [15] | V.V.Kochervinskii,Specifics of structural transformation in poly(vinylidene fluoride)-based ferroelectric polymers in high electric fields,Polym.Sci.Ser.C,50(1),93(2008) |
| [16] | Y.Chen,C.Y.Shew,Conformational behavior of polar polymer models under electric fields,Chem.Phys.Lett.,378,142(2003) |
| [17] | L.Cai,X.Wang,Y.Darici,J.Zhang,P.A.Dowben,Energetics of the dipole flip-flop motion in a ferroelectric polymer chain,J.Chem.Phys.,126(12),124908(2007) |
| [18] | YE Yun,JIANG Yadong,WU Zhiming,ZENG Hongjuan,Study on phase transitions and characteristics of PVDF thin film du.ring electric poling,Chinese Jouranl of Functional Materials,36(12),1883(2005)(叶芸,蒋亚东,吴志明,曾红娟,电场作用下PVDF薄膜的结构相变与剩余极化特性研究,功能材料,36(12),1863(2005)) |
| [19] | L.Carballeira,A.J.Pereiras,M.A.Rios,Conformational properties of poly(vinylidene bromide) and poly(vinylidene fluoride),Macromolecules,23(5),1309(1990) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%