A Facile Strategy for Non-fluorinated Intrinsic Low-k and Low-loss Dielectric Polymers: Valid Exploitation of Secondary Relaxation Behaviors  

作　　者：Chao Qian Zhen-Guo Fan Wei-Wen Zheng Run-Xin Bei Tian-Wen Zhu Si-Wei Liu Zhen-Guo Chi Matthew P.Aldred Xu-Dong Chen Yi Zhang Jia-Rui Xu 

机构地区：[1]PCFM Lab,GD HPPC Lab,Guangdong Engineering Technology Research Centre for High-performance Organic and Polymer Photoelectric Functional Films,State Key Laboratory of Optoelectronic Materials and Technologies,School of Chemistry,Sun Yat-sen University

出　　处：《Chinese Journal of Polymer Science》2020年第3期213-219,I0005,共8页高分子科学（英文版）

基　　金：finincially supported by the National Natural Science Foundation of China (Nos. 51373204 and 51873239);the National 973 Program of China (No. 2014CB643605);the Science and Technology Project of Guangdong Province (Nos. 2015B090915003 and 2015B090913003);the Leading Scientific, Technical and Innovation Talents of Guangdong Special Support Program (No. 2016TX03C295);the China Postdoctoral Science Foundation (No. 2017M612801);the Fundamental Research Funds of Sun Yat-sen University

摘　　要：High-performance low-k and low-loss circuit materials are urgently needed in the field of microelectronics due to the upcoming FifthGeneration Mobile Communications Technology(5 G Technology).Herein,a facile design strategy for non-fluorinated intrinsic low-k and low-loss polyimides is reported by fully considering the secondary relaxation behaviors of the polymer chains.A new amorphous non-fluorinated polymer(TmBPPA)with a k value of 2.23 and a loss tangent lower than 3.94×10^-3 at 104 Hz has been designed and synthesized,which to the best of our knowledge is the lowest value amongst the non-fluorinated and non-porous polymers reported in literature.Meanwhile,TmBPPA exhibits excellent overall properties,such as excellent thermostability,good mechanical properties,low moisture absorption,and high bonding strength.As high-performance flexible circuit materials,all these characteristics are highly expected to meet the present and future demands for high density,high speed,and high frequency electronic circuit used in 5 G wireless networks.High-performance low-k and low-loss circuit materials are urgently needed in the field of microelectronics due to the upcoming FifthGeneration Mobile Communications Technology（5 G Technology）. Herein, a facile design strategy for non-fluorinated intrinsic low-k and low-loss polyimides is reported by fully considering the secondary relaxation behaviors of the polymer chains. A new amorphous non-fluorinated polymer（TmBPPA） with a k value of 2.23 and a loss tangent lower than 3.94 × 10-3 at 104 Hz has been designed and synthesized, which to the best of our knowledge is the lowest value amongst the non-fluorinated and non-porous polymers reported in literature. Meanwhile, TmBPPA exhibits excellent overall properties, such as excellent thermostability, good mechanical properties, low moisture absorption, and high bonding strength.As high-performance flexible circuit materials, all these characteristics are highly expected to meet the present and future demands for high density, high speed, and high frequency electronic circuit used in 5 G wireless networks.

关 键 词：Polyimides LOW-K Free volume Secondary relaxation 

分 类 号：TN41[电子电信—微电子学与固体电子学] TN929.5[化学工程—高聚物工业] TQ317