摘要
采用溶胶-凝胶和原位自金属化相结合方法制备聚酰亚胺(PI)/二氧化硅(SiO2)/银(Ag)三元复合薄膜,通过红外(FTIR)、透射电镜(TEM)、动态粘弹谱仪(DMTA)等系统地考察了热处理过程中杂化薄膜结构形态变化以及SiO2含量对金属银向基体表面迁移情况和杂化薄膜各种性能的影响.实验结果表明,在热处理过程中可以同时完成聚酰胺酸的亚胺化、SiO2粒子的形成及银的还原,并且可以通过改变热处理温度和时间或改变SiO2含量来控制银粒子向聚合物基体表面的迁移.
Polyimide/silica/silver hybrid films were prepared via the combination of sol-gel method and in situ single-stage self-metallization technique. The structure of polyimide films in the thermal curing process and the influence of silica content on the transfer and aggregation of silver particles to the surface of hybrid films were investigated. Films were characterized by transmission electron microscopy, dynamic mechanical thermal analysis, Fourier transform infrared spectroscopy, ultraviolet visible spectroscopy and mechanical measurements. The results indicated that there was no degradation of polyimide matrix after the formation of silica and silver particles. Silica acted as the nucleus for the in the hybrid films instead decreased gradually silver particles. With increasing the content of silica, more and more silver particles keep of transferring onto the surface of the hybrid films, and the reflections of hybrid films
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2007年第11期1047-1051,共5页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号50573007)
新世纪优秀人才支持计划(项目号NCET-040118)
北京市教委重点学科共建设项目(项目号XK100100433
XK100100540)资助
关键词
聚酰亚胺
二氧化硅
银
自金属化
杂化薄膜
Polyimide, Silica, Silver, Self-metallization, Hybrid films