Hyperbranched polymers (HBPs) have the characteristics of low viscosity, high fluidity, and excellent solubility, which enable them to have many potential applications in various fields. In this study, unequal activity 3,4′,5-trifluoro dibenzophenone (B’B) monomers and large volume 9,9-bis (4-hydroxyphenyl) fluorene (A) monomers were used to prepare hyperbranched poly (aryl ether ketones) (HBPAEKs) through nucleophilic substitution reaction, and three different hyperbranched HBPAEKs with hydroxy-terminated, fluoro-terminated, and epoxy-terminated groups were synthesized. The properties of the three HBPAEKs were systematically characterized by FT-IR, NMR, GPC, TGA, DSC and others. The solubility test shows that the synthesized HBPAEKs were soluble in most common organic solvents. Thermal analysis results showed that the fluorine-terminated HBPAEKs had excellent thermal stability, with a 5% weight loss temperature of 568 °C (T = 568 °C), which is equivalent to that of poly (ether ether ketone) (PEEK, T = 573 °C). Moreover, by adding HBPAEKs, the Melt Flow Rates (MFR) of PEEK was increased by 59%, which can greatly improve the processability of PEEK.

中文翻译：

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具有大体积芴的超支化聚（芳基醚酮）具有优异的溶解度和热性能

超支化聚合物（HBP）具有低粘度、高流动性和优异的溶解性等特点，使其在各个领域具有许多潜在的应用。本研究采用不等活性的3,4',5-三氟二苯甲酮(B'B)单体和大体积9,9-双(4-羟基苯基)芴(A)单体制备超支化聚(芳基醚酮) (HBPAEKs)通过亲核取代反应，合成了三种不同的具有羟基、氟端基和环氧端基的超支化HBPAEKs。通过 FT-IR、NMR、GPC、TGA、DSC 等系统地表征了三种 HBPAEK 的性能。溶解度测试表明合成的HBPAEKs可溶于大多数常见有机溶剂。热分析结果表明，氟端基HBPAEKs具有优异的热稳定性，5%失重温度为568℃（T=568℃），与聚醚醚酮（PEEK，T）相当。 = 573°C）。而且，通过添加HBPAEKs，PEEK的熔体流动速率（MFR）提高了59%，可以大大提高PEEK的加工性能。