GO杂化PVDF纳米纤维复合压电器件制备及性能研究

Preparation of GO Hybridized PVDF Nanofiber Composite Piezoelectric Devices and Their Performance Study

为制备高性能小型压电发电机,用静电纺丝制备聚偏氟乙烯PVDF纳米纤维膜,其中掺杂0%、0.3%、0.4%、0.5%质量比氧化石墨烯GO,对其进行SEM、接触角测试仪、红外光谱仪、热失重仪等测试。研究表明,随着GO浓度的增大,纤维的串珠变少,均匀性变好;纤维膜的接触角变小,疏水性下降。添加GO能促进PVDF中的β晶型的形成,并抑制α晶型的形成,GO浓度为0.5%时效果最佳。随着GO浓度的增大,PVDF纤维膜质量损失变少,稳定性更好。通过电压测试可得,以针织导电布为基底添加0.5%GO的PVDF纤维膜模型在克重为0.15g时,运动所产生的电压值最大,最大的电压峰值可达到273.4mV。研究结果为制备简单高效的纳米发电器件提供一定的研究价值。

In order to prepare high-performance small piezoelectric generators,polyvinylidene fluoride(PVDF)nanofiber membranes were prepared by electrospinning,which were doped with 0%,0.3%,0.4%,and 0.5% mass ratio graphene oxide(GO).SEM,contact angle tester,infrared spectrometer,thermogravimetric analyzer were used to test and analyze the nanofiber membranes.Research showed that with the increase of GO concentration,the beads of fiber decreased while the uniformity improved,and the contact angle and the hydrophobicity of the fiber membrane decreased.Adding GO could promote the development of PVDFβ Crystal formation and inhibition α Crystal formation.The best effect was achieved when the GO concentration was 0.5%.As the concentration of GO increased,the quality loss of PVDF fiber membrane decreased and its stability improved.Through piezoelectric voltage testing,it could be concluded that the 0.5%GO/PVDF fiber membrane piezoelectric model based on knitted conductive fabric produced the highest voltage value under compression at a weight of 0.15g,which could reach 273.4mV.The research results provided certain research value for the preparation of simple and efficient nanogenerating devices.