文献类型：期刊文献

英文题名：Flexible polyvinylidene fluoride based nanocomposites with high and stable piezoelectric performance over a wide temperature range utilizing the strong multi-interface effect

作者：Yang, Lu[1,2];Zhao, Qiuying[2];Hou, Ying[3];Hong, Liying[1];Ji, Hongli[2,4];Xu, Lan[2,4];Zhu, Kongjun[2,4];Shen, Mingxia[1];Huang, Huajie[1];He, Haiyan[1];Qiu, Jinhao[2,4]

机构：[1]Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China;[2]Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China;[3]East China Univ Sci & Technol, Dept Phys, Coll Sci, Shanghai 200237, Peoples R China;[4]Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, Nanjing 210016, Jiangsu, Peoples R China

年份：2019

卷号：174

起止页码：33

外文期刊名：COMPOSITES SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20190806525330);WOS:【SCI-EXPANDED(收录号:WOS:000469407500005)】；

基金：This work was supported by the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and astronautics) (Grant No. MCMS-0518Y01), Major State Basic Research Development Program of China (973 Program, Grant No. 2015CB057501), Fundamental Research Funds for the Central Universities (Grant No. 2017B06014) and Natural Science Foundation of Jiangsu Province (Grant No. BK20150061).

语种：英文

外文关键词：Polymer-matrix composites(PMCs); Nano particles; Electrical properties; Piezoelectric property

摘要：Because of the good piezoelectric properties among polymers, poly(vinylidene fluoride) (PVDF) has been extensively applied in constructing flexible sensors and energy harvesters. Recent progress towards high performance sensors and energy harvesters has trigged significant interest in the fabrication of PVDF materials with superior piezoelectricity and good thermal piezoelectric stablility. Herein, we reported a flexible PVDF based nanocomposite that maintained high and stable piezoelectricity over a wide temperature range from 10 to 100 degrees C through the strong multi-interface effect. In this work, PVDF was firstly blended with poly (vinylidene fluoride-co-hexafluropropylene) (PVDF-HFP), and then dopamine modified BaTiO3 hollow nanoparticles were introduced into the blend polymer matrix. Through optimizing the fabrication process and modulating the mass ratio of PVDF-HFP and BaTiO3, notably strenghthened ferroelectricity and piezoelectricity was achieved in the final composites, wherein the piezoelectric coefficient d(33) reached a peak of 40 pC/N and showed good retention with increasing temperatures up to 100 degrees C.