摘要
利用原位复合法制备了聚苯胺/BaTiO3复合PTC材料。通过控制工艺条件,复合PTC材料的室温电阻率比未复合聚苯胺的BaTiO3陶瓷降低了20倍以上。采用SEM、FTIR等方法对复合PTC材料的结构进行了表征和分析,结果表明:聚苯胺高分子链的存在使BaTiO3颗粒在复合物中分散的均匀性和稳定性得到了提高;BaTiO3颗粒与聚苯胺的界面间存在O-N的氧键作用,使聚苯胺/BaTiO3复合PTC材料中聚苯胺的稳定性提高。
The synthesis of polyaniline-barium titanate composite material by in-situ polymerization was described. Through controlling technics condition, the room temperature resistance of PTC composite material had been reduced by more 20 times than BaTiO3 ceramic without polyaniline. Furthermore the structures of them were characterized and analyzed by SEM, FTIR. The results revealed that because of the PAn macromolecule chain, the uniformity and stability of barium titanate grains had been improved; because of the hydrogen bond function of O-N existing between the interface of barium titanate grains and PAn, the stability of PAn existing in polyaniline-barium titanate composite material had been improved.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A01期520-522,共3页
Rare Metal Materials and Engineering
基金
国家博士点基金支持项目(20040056005)
关键词
聚苯胺
BATIO3
复合材料
原位复合
PTC
polyaniline
barium titanate
composite material
in-situ polymerization
PTC
