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4,4′-二羟基二苯醚和2-氯-5-硝基三氟甲苯经Williamson反应得到4,4′-双(4-硝基-2-三氟甲基苯氧基)二苯醚;在Pd/C-水合肼还原作用下得到4,4′-双(4-氨基-2-三氟甲基苯氧基)二苯醚(p-6FAPE).采用3种苯醚型含氟二胺1,4-双(3-氨基-5-三氟甲基苯氧基)苯、1,4-双(4-氨基-2-三氟甲基苯氧基)苯和p-6FAPE分别与3,3′,4,4′-二苯醚四酸二酐(ODPA)和均苯四甲酸二酐通过两步法制备出6种含氟聚酰亚胺(PI),对其溶解性、热性能和光学性能进行研究.这些PI具有较好的溶解性,且具有良好的热稳定性;ODPA基PI在可见光波长范围具有优良的透明性,450 nm处的透光率超过80%.
4,4’-dihydroxydiphenyl ether and 2-chloro-5-nitrobenzotrifluoride were subjected to Williamson reaction to give 4,4’-bis (4-nitro-2-trifluoromethylphenoxy) Ether; 4,4’-bis (4-amino-2-trifluoromethylphenoxy) diphenyl ether (p-6FAPE) was obtained under the action of Pd / C-hydrazine hydrate reduction. Fluoro-diamine 1,4-bis (3-amino-5-trifluoromethylphenoxy) benzene, 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene and p-6FAPE Six fluorinated polyimides (PIs) were prepared by a two-step process with 3,3 ’, 4,4’-diphenyl ether tetracarboxylic dianhydride (ODPA) and pyromellitic dianhydride respectively. Properties, thermal properties and optical properties of these PIs. These PIs have good solubility and good thermal stability. The ODPA-based PI has excellent transparency in the visible wavelength range and has a transmittance of more than 80% at 450 nm .