1,3-双(4-氨基苯氧基)苯合成及聚酰亚胺的制备

Preparation of 1,3-bis(4-p-nitrophenoxy) Benzene and Polyimide

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。

1,3-bis （4-p-nitrophenoxy） benzene were synthesized based on the concept of molecular design. Polyimide based on 1,3-bis （4-p-nitrophenoxy） benzene and Pyromellitic Dianhydride was prepared by traditional two-step method in DMAC solution, and polyamide was imidized by chemistry and ladder heating-up way. FTIR, DSC, HPLC and NMR were used to characterized the structure and purity of diamine monomer synthesized. The results show that the purity of 1,3-bis （4 -p-nitrophenoxy） benzene exceed 99%, ladder heating-up process is in favor of imidization of polyimide.