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以三嵌段共聚物L64为模板剂、正硅酸乙酯(TEOS)为硅源,经水热合成介孔硅材料SBA;以4,4-二氨基二苯醚(ODA)、均苯四甲酸酐(PMDA)为聚合体系并通过原位分散聚合法制备了介孔硅改性聚酰亚胺材料。经过TEM,XRD,红外,TG,膜附着力及工业可靠性测试等手段对所制备的材料进行了结构与性能表征。研究表明,当加入总量的1%的介孔硅时,所得的改性聚酰亚胺膜附着力及热稳定性均有所提高并可用于工业生产。
Using triblock copolymer L64 as templating agent and tetraethoxysilane (TEOS) as the silicon source, mesoporous silica (SBA) was synthesized by hydrothermal method. The 4,4’-oxydianiline (DDA) Formic anhydride (PMDA) is a polymeric system and mesoporous silica-modified polyimide materials were prepared by in situ dispersion polymerization. The structure and properties of the prepared materials were characterized by TEM, XRD, IR, TG, film adhesion and industrial reliability testing. The results show that when adding 1% of the total amount of mesoporous silicon, the resulting modified polyimide film adhesion and thermal stability are improved and can be used for industrial production.