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目的合成一种新型既可溶解又耐高温的聚芳醚。方法从分子设计的角度出发,研究最佳合成方法及合成途径。结果合成了一种新型不对称杂环类双酚单体4-(2,5-二甲基-4-羟基苯基)二氮杂萘酮,分别与4种活性双卤单体经芳香亲核取代缩聚,制备了一系列聚芳醚聚合物。该系列聚芳醚特性粘度范围在0．39-0．79dL／g,玻璃化温度在232-284℃,氮气中5％和10％热失重温度分别是421-440℃和434-453℃,表现出良好的热性能。它们均为无定形结构,在室温下易溶于NMP、DMAc、DMF、Py、CHC13等有机溶剂中。结论该方法适宜于合成既可溶解又耐高温的聚芳醚。
Aim To synthesize a new type of polyarylene ether that is both soluble and temperature-resistant. Methods From the molecular design point of view, the best synthetic methods and synthetic routes were studied. Results A new asymmetric heterocycle bisphenol monomer, 4- (2,5-dimethyl-4-hydroxyphenyl) phthalazinone, was synthesized and reacted with four active bishalide monomers Nuclear substitution polycondensation, prepared a series of poly (aryl ether) polymers. The intrinsic viscosity of polyarylene ether ranged from 0.39 to 0.79 dL / g, the glass transition temperature was 232-284 ℃, the 5% and 10% weight loss temperatures in nitrogen were 421-440 ℃ and 434-453 ℃ respectively, Show good thermal performance. They are amorphous structure, easily soluble in NMP, DMAc, DMF, Py, CHC13 and other organic solvents at room temperature. Conclusion This method is suitable for synthesizing both polyarylene ether which is both soluble and high temperature.