从分子设计的角度出发,合成了1,3-双(4-氨基苯氧基)苯二胺单体,利用二步法溶液聚合制备了均苯四甲酸二酐/1,3-双(4-氨基苯氧基)苯聚酰亚胺,采用化学与梯度升温热亚胺化对聚酰胺酸脱水亚胺化。FTIR、DSC、HPLC、NMR为主要分析手段,研究了二胺单体的纯度与结构,聚酰胺酸亚胺化工艺。研究发现所制备的1,3-双(4-氨基苯氧基)苯纯度达99%以上,梯度升温提高聚酰胺酸亚胺化程度。 From the perspective of molecular design, 1,3-bis (4-aminophenoxy) phenylenediamine monomer was synthesized and the pyromellitic dianhydride / 1,3-bis - aminophenoxy) benzene polyimides, the use of chemical and gradient heating imidization polyamic acid dehydration imidization. FTIR, DSC, HPLC and NMR as the main analytical methods, the purity and structure of the diamine monomer, polyamic acid imidization process were studied. The results showed that the purity of 1,3-bis (4-aminophenoxy) benzene prepared was more than 99%, and the gradient heating increased the degree of imidization of polyamic acid.