主链含N-烷基咔唑环结构聚芳醚酮的性能表征  

Properties of Poly(arylene ether ketone) s Containing N-Alkylcarbazole in Main Chains

作　　者：王菲菲[1,2] 王志鹏[1,2] 王红华[1] 周光远[1] 

机构地区：[1]中国科学院长春应用化学研究所中科院生态环境高分子材料实验室,长春130022 [2]中国科学院大学,北京100049

出　　处：《应用化学》2015年第4期379-385,共7页Chinese Journal of Applied Chemistry

基　　金：吉林省科技厅发展项目(20130204029GX)~~

摘　　要：对含N-烷基咔唑环结构的聚芳醚酮（PPCz E、PPCz B和PPCz H）进行基本物理性能方面的表征,并与商业化酚酞基聚芳醚酮（PEK-C）进行比较。咔唑环结构的引入使聚合物在345 nm附近有强紫外光吸收并表现出发蓝光能力。由于疏水性烷基侧链的存在,聚合物薄膜的水接触角（87°-103°）大于PEK-C（76°）,但同时烷基侧链所引起的聚合物链间距的增大导致聚合物的吸水率（0.65%-0.86%）高于PEK-C（0.56%）。此外,聚合物表现出较好的尺寸稳定性（平均线膨胀系数6.4×10^-5℃^-1）和电绝缘性能（体积电阻率1016Ω·cm）。聚合物的拉伸模量在1.9-2.0 GPa之间,拉伸强度在72.5-75.0 MPa之间以及断裂伸长率在6.5%-7.2%之间。高温条件下（≤225℃）,PPCz E仍具有良好的拉伸性能。Several basic physical properties of poly （arylene ether ketone ）s containing N-alkylcarbazole （PPCzE, PPCzB and PPCzH） were studied in comparison with the corresponding analog, commercialized phenolphthalein poly （ether ketone ） （PEK-C）. Strong UV absorption and blue light emission ability are exhibited by these polymers due to the introduction of carbazole structure. The water contact angle of polymers （87° - 103°） is greater than that of PEK-C（76°） , because of the hydrophobic nature of alkyl groups. While at the same time, these polymers have higher water uptake capabilities than PEK-C which is probably due to their larger chain distance. In addition, these polymers exhibit good dimensional stability （linear thermal expansion coefficient 6. 4 ×10 ^-5 ℃ ^-1 ） and electrical insulating （ volume resistivity 10^16 Ω· cm） property. Young＇ s modulus, tensile strength and elongation at break of these polymers are in the range of 1.9 - 2. 0 GPa, 72. 5 -75.0 MP and 6. 5% - 7. 2%, respectively. Dynamic mechanical analysis shows that PPCzE remains good tensile property at the temperature up to 225 ℃.

关 键 词：聚芳醚酮 咔唑 侧链烷基 荧光 接触角 拉伸性能 

分 类 号：O633.1[理学—高分子化学]