Abstract

A novel bisphenol monomer, (4-trifluoromethyl) phenylhydroquinone, was synthesized using a three-step synthetic procedure. Two aromatic poly(aryl ether ketone)s were then prepared via a nucleophilic polycondensation reaction of (4-trifluoromethyl) phenylhydroquinone and two difluorinated aromatic ketones, respectively. As-synthesized poly(aryl ether ketone)s show a high thermal stability, and the temperatures at 5% weight loss are above 530°C in N₂ atmosphere. The solubility of the polymers is improved by introduction of bulky pendant groups. All the polymers form transparent, strong, and flexible films with tensile strengths of 65–70 MPa, Young’s moduli of 1.6–2.0 GPa, and elongations at break of 36–42%. Polymer films have low dielectric constants of 2.6–2.7 at 1 MHz and low water absorption of 0.21–0.25%. In addition, they have low absorptions at the telecommunication wavelengths of 1300 and 1550 nm.

中文翻译：

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新型氟化聚芳醚酮的合成及其性能

摘要

使用三步合成程序合成了一种新型双酚单体 (4-三氟甲基) 苯基氢醌。然后分别通过（4-三氟甲基）苯基氢醌和两个二氟化芳族酮的亲核缩聚反应制备了两种芳族聚（芳醚酮）。合成后的聚（芳醚酮）具有高热稳定性，在 N _{2 中}重量损失 5% 时的温度高于 530°C大气层。聚合物的溶解性通过引入庞大的侧基得到改善。所有聚合物都形成透明、坚固且柔韧的薄膜，拉伸强度为 65-70 MPa，杨氏模量为 1.6-2.0 GPa，断裂伸长率为 36-42%。聚合物薄膜在 1 MHz 下具有 2.6–2.7 的低介电常数和 0.21–0.25% 的低吸水率。此外，它们在 1300 和 1550 nm 的电信波长处具有低吸收。