聚酰亚胺/无机物纳米杂化材料的研究Ⅱ.聚酰亚胺(TDPA/ODA)-BaTiO_3纳米杂化物的合成与表征  

Study on Polyimide-inorganic Nanocomposite Material Ⅱ Preparation and Characterization of Polyimide BaTiO_3 Nanocomposite Film

作　　者：童跃进[1] 李小晶[1] 陈守正[1] 李悦生[2] 丁孟贤[2] 

机构地区：[1]福建师范大学化学系,福州350007 [2]中国科学院长春应用化学研究所,长春130022

出　　处：《福建师范大学学报（自然科学版）》1999年第4期45-48,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金

摘　　要：由碳酸钡、钛酸丁酯和乳酸制得钛酸钡多晶相.WAXD和TEM 分析表明, 该钛酸钡具有典型的钙钛矿结构, 粒径为30～50 nm . 此钛酸钡纳米粉被成功地分散于聚酰胺酸中并制得聚酰亚胺(TDPA/ODA) 杂化材料. TEM 和AFM 表明低含量 (< 1% BaTiO3) 的杂化膜, 无机物是以< 50 nm的球状颗粒均匀分散于聚酰亚胺基体中, 高含量 (如30% ) 杂化膜是具有光滑表面的韧性薄膜. 后者介电常数与压电常数比纯聚酰亚胺提高了近一倍.Barium titanate (BaTiO 3) powders, prepared from barium carbonate, titanium n butoxides and lactic acid, have a typical perovskite structure with particle sizes of 30～50 nm. Dispersing the agglomerate of BaTiO 3 nanoparticles into poly(amic acid) solution followed by curing leaded to polyimide hybrid films,which were well distributed with BaTiO 3 nanoparticles when BaTiO 3 content less than 1 wt% was adopted.Highly loaded hybrid film containing 30% BaTiO 3 was toughness film with smooth surface and possessed dielectric and piezoelectric constant higher than that the parent polyimide did by almost 1 time.

关 键 词：聚酰亚胺 钛酸钡 钠米微粒 纳米杂化材料 合成 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ#23.7[化学工程]