申请人:Asahi Glass Company Limited
公开号:EP2330159A1
公开(公告)日:2011-06-08
To provide an electret having high stability with time and thermal stability of retained electric charge and having excellent charge retention performance, and an electrostatic induction conversion device comprising such an electret.
An electret obtained from a composition comprising a compound (A) having a molecular weight of from 50 to 2000 and having at least two polar functional groups, and a polymer (B) having a number average molecular weight of more than 2000 and having reactive functional groups reactive with the above polar functional groups. An electrostatic induction conversion device comprising such an electret.
提供一种驻极体,该驻极体具有较高的时间稳定性和保留电荷的热稳定性,并具有优异的电荷保留性能,以及一种包含这种驻极体的静电感应转换装置。
一种由化合物(A)和聚合物(B)组成的驻极体,化合物(A)的分子量在 50 到 2000 之间,并具有至少两个极性官能团,聚合物(B)的平均分子量大于 2000,并具有与上述极性官能团反应的活性官能团。一种静电感应转换装置,包括上述驻极体。