A Bulk Dielectric Polymer Film with Intrinsic Ultralow Dielectric Constant and Outstanding Comprehensive Properties
A Bulk Dielectric Polymer Film with Intrinsic Ultralow Dielectric Constant and Outstanding Comprehensive Properties
复制标题
具有本征超低介电常数和优异综合性能的块状介电聚合物薄膜
DOI：
10.1021/acs.chemmater.5b01798
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发表时间：
2015-10-13
影响因子：
8.6
通讯作者：
Xu, Jiarui
中科院分区：
文献类型：
--
作者：
Liu, Yiwu;Qian, Chao;Xu, Jiarui
基于一种新型聚酰亚胺FPTTPI，成功地合成了一种在10 kHz下本征超低k值为1.52的体介电聚合物薄膜。更重要的是，这种出色的介电性能在高达280摄氏度的温度下保持稳定。优异的超低介电性能主要是由于聚合物材料的非晶区固有的较大自由体积（亚纳米级）。同时，FPTTPI还显示出优异的热稳定性和机械性能，玻璃化转变温度（T-g）为280 ℃，5wt%损失温度为530 ℃，在800 ℃下在N-2下残留63%。它可溶于普通溶剂，这使得可以进行简单的旋涂或高效、低成本和连续的卷对卷工艺。
A bulk dielectric polymer film with an intrinsic ultralow k value of 1.52 at 10 kHz has been successfully synthesized based on a novel polyimide FPTTPI. More importantly, such outstanding dielectric properties remain stable up to 280 degrees C. The excellent ultralow dielectric properties are mainly because of the larger free volume (subnanoscale), which intrinsically exists in the amorphous region of polymeric materials. Meanwhile, FPTTPI also shows excellent thermal stability and mechanical properties, with a glass-transition temperature (T-g) of 280 degrees C, 5 wt % loss temperature of 530 degrees C, and a residual of 63% at 800 degrees C under N-2. It was soluble in common solvents, which made it possible to undergo simple spin-on or efficient, low-cost, and continuous roll-to-roll processes.