利用X射线衍射、差分扫描热分析(DSC)、电滞回线和介电常数的测量等研究了经高能电子辐照的共聚物P(VDF-TrFE) 56/44 mol%和80/20 mol%的相变特性和弛豫现象.结果表明,适量电子辐照不仅可以把低VDF含量的P(VDF-TrFE)56/44 mol%从正常铁电体转变为弛豫铁电体,而且可以把高VDF含量的P(VDF-TrFE)80/20 mol%转变为驰豫铁电材料.从而为此类巨电致伸缩材料的应用奠定了基础,扩大了其在机电装置方面的应用范围.
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