摘要
在制备无机粒子/聚合物高介电复合材料过程中,无机粒子与基体较差的亲和性导致了无机粒子在聚合物基体中的团聚,限制了复合材料性能的提升。对钛酸钡粒子进行表面羟基化处理后,利用苄膦酸改性剂对钛酸钡粒子进行改性,然后将钛酸钡粒子掺杂到聚苯乙烯基体中制备得到复合材料。苄膦酸的使用有效改善了无机粒子与聚合物基体之间的相容性,促进了无机粒子在聚合物基体中的均匀分散,提高了复合材料介电常数,并降低了介电损耗。
Ceramics/polymer composites with high dielectric constant are of significant current interest.The enhancement of the performance of ceramics/polymer composites is limited by the agglomeration of ceramics in the host polymers.This is mainly caused by the poor compatibility of ceramics and polymers.We used benzylene phosphonic acid（BPA） to modify the barium titanate（BT）,then incorporated the modified BT with the polystyrene（PS） matrix.The use of benzylene phosphonic acid greatly improved the compatibility of BT and PS,which leaded a better dispersion of BT in PS matrix.The dielectric constant is apparently increased and the dielectric loss decreased.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2011年第6期821-824,839,共5页
Journal of Materials Science and Engineering
关键词
钛酸钡
苄膦酸
聚苯乙烯
介电常数
介电损耗
barium titanate
benzylene phosphonic acid
polystyrene
dielectric constant
