以2,6-二甲基苯胺为原料,通过一步反应制备了3,3′,5,5′-四甲基-4,4′-二氨基二苯甲烷(TMDDM),并对其结构进行表征。将TMDDM、4,4′-二氨基二苯醚(ODA)与4,4′-氧双邻苯二甲酸酐(ODPA)以不同的配比进行三元共聚,通过热亚胺化合成了6种TMDDM/ODA/ODPA-聚酰亚胺(PI)薄膜,随后对6种薄膜进行了结构表征和性能研究。结果表明:6种PI薄膜具有优良的热性能、疏水性、紫外-可见光透过率、机械性能和溶解性。
3,3′,5,5′-tetramethyl-4,4′-diaminodiphenylmethane(TMDDM) was prepared by the reaction of 2,6-dimethylaniline and its structure was characterized.TMDDM,4,4′-diaminodiphenylether(ODA) and 4,4′-oxydiphthalic anhydride (ODPA) were terpolymerized in different proportions and thermally imidized to obtain six TMDDM/ODA/ODPA-PI films,followed by structural characterization and performance studies.The results showed that six polyimide films all had good thermal properties,hydrophobicity,ultraviolet-visible,transmittance,mechanical properties,solubility and so on.
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基金资助
上海市科委“碳纤维电缆芯用高性能环氧基体树脂的研制产业化”项目(12521102002)