Based on 26B4APBN monomer,polyamic acid was obtained by polymerization with pyromellitic dianhydride(PMDA),and further imidized into polyimide(PI) film by heating process.

• 由二胺单体和均苯四甲酸二酐(PMDA)进行聚合得到26B4APBN/PMDA聚酰胺酸,再经热亚胺化得到聚酰亚胺薄膜;