The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst. 第二种聚酰亚胺聚合物是芳香族四酸二酐与芳香族二异氰酸酯，在有机溶剂中，在催化剂的作用下，一步法缩合反应制备得到；
The first polyimide polymer is prepared with aromatic fluoric diamine and aromatic tetracid dihydride and through a two-step condensation reaction in organic solvent and under the action of catalyst. 第一种聚酰亚胺聚合物是芳香族含氟二胺与芳香族四酸二酐，在有机溶剂中，在催化剂的作用下，两步法缩合反应制备得到；
