4,4'-双(4-氨基苯氧基)二苯硫醚及其聚酰亚胺的合成与性能研究

Synthesis of 4,4'-Bis(4-aminophenoxy) Diphenyl Sulfide Ether and Study on the Properties of the Polyimide Film Therefrom

4,4'-二羟基二苯硫醚(44DHDPS)、4-氯硝基苯(4CNB)和碳酸钾在N,N-二甲基甲酰胺(DMF)和甲苯的混合溶剂体系中回流反应,合成得到了4,4'-双(4-硝基苯氧基)二苯硫醚(DNDPSE);随后,在Pd/C-水合肼的还原体系中,被进一步还原,得到了4,4'-双(4-氨基苯氧基)二苯硫醚(DADPSE)。另外,将所得到的4,4'-双(4-氨基苯氧基)二苯硫醚(DADPSE)与均苯四甲酸二酐(PMDA)在强极性非质子有机溶剂中进行聚合反应,得到了粘稠状的聚酰胺酸(DADPSE/PMDA-PAA)溶液,涂膜、热亚胺化,得到了相应的聚酰亚胺(DADPSE/PMDA-PI)薄膜,并对其性能进行了研究。

The polyimide monomer of 4, 4＇ -bis（4-aminophenoxy） diphenyl sulfide ether（DADPSE） was obtained through the reducing reaction of the 4,4＇-bis（4-nitrophenoxy）diphenyl sulfide ether（DNDPSE） in the system of Pd/ C-hydrazine hydrate. The compound of DNDPSEwas synthesized by the condensation reaction between 4-chloronitrobenzene（4CNB） and 4,4＇-dihydroxydiphenyl sulfide （44DHDPS） in the presence of potassium carbonate in the mixture solvents of N, N-dimethylformamide（DMF） and toluene （Tol） . Moreover, the viscous polyamic acid（DADPSE/PMDA-PAA） solution was prepared by polycondesation reaction between DADPSE and pyromelltic dianhydride（PMDA） in the polar aprotic organic solvent, and the corresponding polyimide （DADPSE/ PMDA-PI） film was also obtained by thermal imidization of DADPSE/ PMDA-PAA thin layer. The properties of the film was further studied.