含烯丙基侧基聚芳醚酮的制备及其表征

Preparation and Characterization of Poly(ether ketone) with Allyl Side Group

摘要: 通过酚酞啉和二氟二苯酮的SN2亲核缩聚反应合成侧链含有羧基的聚芳醚酮(PEK-L)，再经与丙烯酸羟乙酯（HEA）的酯化反应得到了含有烯丙基侧基的聚芳醚酮树脂（PEK-L-A），通过改变反应物单体的加入量可调整烯丙基的接枝率。用FT-IR、1H-NMR、DSC等手段表征和测试了聚合产物的结构与性能。结果表明：以该功能性聚芳醚酮为基体树脂配制的溶液涂层经紫外光固化后其涂层的耐热温度可达300 ℃，冲击强度高于100 kg·cm。

Abstract: A novel type of poly(aryl ether ketone) bearing pendant allyl group (PEK-L-A) was prepared, first by SN2 nucleophilic polycondensation from phenolphthalin and 4,4’-difluorobenzophenone to prepare polyaryletherketone bearing pendant carboxyl group （PEK-L）, followed by esterfication reaction with 2 hydroxyethyl acrylate (HEA). The ratio of allyl side group could be controlled by altering the amount of HEA. The structure and properties of PEK-L-A were characterized and tested by FT-IR, 1H-NMR, DSC etc. Results showed that the heat resistant temperature of coating layer with PEK-L-A as matrix resin after UV curing was up to 300 ℃, and impact strength higher than 100 kg·cm.