论文部分内容阅读
阻抗渐变材料在医用可穿戴设备中起着重要作用。为了实现不同材料之间的相互匹配特性,低介电阻抗渐变材料的研究尤为重要。利用静电纺丝的方法,设计制备了具有阻抗渐变性的低介电钛酸钡(BaTiO3)/聚偏氟乙烯(PVDF)复合纤维膜。结果表明:BaTiO3纳米粒子可在纤维网络中均匀分布,通过调节其质量分数,能够有效调节BaTiO3/PVDF复合纤维膜的介电常数在1~7的范围内,BaTiO3/PVDF复合纤维膜对不同的电场频率具有不敏感性。BaTiO3/PVDF复合纤维膜还具有良好的力学性能,能够有效满足可穿戴设备的材料需求。
Impedance graded materials play an important role in medical wearable devices. In order to realize the mutual matching between different materials, the research of low dielectric impedance graded material is especially important. The BaTiO3 / polyvinylidene fluoride (PVDF) composite fiber membranes with impedance gradients were designed and prepared by electrospinning method. The results show that the BaTiO3 / PVDF nanofibers can be uniformly distributed in the fiber network. The dielectric constant of the BaTiO3 / PVDF nanofibers can be adjusted within the range of 1 ~ 7 by adjusting the mass fraction of BaTiO3 / Electric field frequency is insensitive. BaTiO3 / PVDF composite fiber membrane also has good mechanical properties, can effectively meet the material requirements of wearable devices.