摘要
综述了几种电活性聚合物近年来的迅猛发展状况.其中之一是空间电荷型聚合物压电膜,例如聚丙烯蜂窝膜(PP cellular)和聚四氟乙烯多孔膜(porous PTFE),它们呈现出高达200～600pC/N的压电d_(33)系数。另一类是经缺陷结构修正的弛豫铁电聚合物偏氟-三氟乙烯共聚物,它们在150MV/m的电场作用下可能诱导出约5％的高应变量和1J/cm^3的高弹性能密度。而全有机复合材料则呈现出十分高的介电系数(>900),和在13MV/m的较低电场下形成的2％的高应变量及接近1GPa的高弹性模量。
In this report,several classes of electroactive polymer developed recently are reviewed. As representative polymeric piezoelectric films with space charge, polypropylene cellular and porous polytetrafluoroethylyne films have a piezoelectric d33 coefficicent of 200 - 600pC/N. In the second class of electroactive polymers, i. e. the defect-structure modified poly(vinylidene fluoroethylene-trifluoroethylene) polymers,an electrostrictive strain of more than 5% and elastic energy density above 1J/cm3 can be induced in a field of 150MV/m. And the polymer is an all-organic composite,with a very high dielectric constant(>900) and high strain induced in a weak applied electric field (2% strain in 13MV/m) and the composite has an elastic modulus near 1GPa.
出处
《材料导报》
EI
CAS
CSCD
2003年第5期48-50,共3页
Materials Reports
基金
国家自然科学基金(50073016)-50210205371
中德合作科研项目(Ref.I/77365)
