【摘要】 <正> 聚苯基喹(口恶)啉(PPQ)是一类线型的热塑性耐高温芳杂环高分子化合物,为了提高它们的使用温度,首先要提高T_g,通常分子中引入一个氯原子,每克分子的内能约增加3—4kcal。我们用格氏反应,合成了含氯四羰基单体的中间体1,4-双(对氯苯乙酰基)苯,再经氧化得到含氯四羰基单体1,4-双(对氯苯乙二酮)苯,将它与3,3′-二氨基联苯胺,更多还原

【Abstract】 This paper describes a new series of polyphenylquinozaline (PPQ). The starting material, para-bis(p-chlorophenylg!yoxaloyl)benzene(CPGB) was prepared via Grignard reaction. Chlorinated polyphenylquinoxaline was then obtained through cyclocondensa-tion reaction of 3, 3’-diaminotenzidine(DAB) and 3,3’, 4,4’-tetramino-diphenyl ether (TAPE) with CPGB. They have higher T, than that of PPQ itself. Block and random copolymers of PPQ were prepared by the reaction of DAB and TAPE with 1,4-bis(phenylgloxaloyl) benzene (PGB) in m-cresol at room temperature. These polymers and copolymers exhibit higher thermoxidative stability, and excellent high-temperature resistance even in the presence of water.更多还原