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将一种全氟磺酸树脂(Nafion)与多壁碳纳米管(MWCNTs)分别按质量比100∶1、100∶3、100∶5进行配比,采用溶剂浇铸法配合超声波分散法制备MWCNTs/Nafion型离子交换膜(IEM),在此基础上利用化学沉积法制备铂型离子聚合物金属复合材料(Pt-IPMC),考察三种MWCNTs负载量对IEM及Pt-IPMC性能的影响。采用SEM配合EDAX研究Pt的沉积效果,对IEM及Pt-IPMC试样进行拉伸测试,采用数字信号发生器为激励源测试Pt-IPMC的动态位移。结果表明:添加MWCNTs使Pt-IPMC的内、外电极厚度分别增加200%～250%和180%～200%,使IEM及Pt-IPMC的弹性模量分别提高57.92%～140.85%和9.06%～52.85%;MWCNTs有效修饰了Pt-IPMC的内电极,并明显提升其动态位移量、动态响应及变形速度。
A kind of perfluorosulfonic acid resin (Nafion) and multi-walled carbon nanotubes (MWCNTs) were mass ratio of 100: 1, 100: 3, 100: 5 ratio, the use of solvent casting method with ultrasonic dispersion MWCNTs / Nafion-type ion exchange membrane (IEM). On this basis, Pt-IPMC was prepared by chemical deposition method. The effects of three MWCNTs loadings on the properties of IEM and Pt-IPMC were investigated. SEM and EDAX were used to study the deposition effect of Pt. Tensile tests on IEM and Pt-IPMC samples were carried out. The dynamic displacement of Pt-IPMC was tested by using digital signal generator as excitation source. The results showed that the addition of MWCNTs increased the inner and outer electrode thicknesses of Pt-IPMC by 200% -25% and 180% -200%, respectively. The elastic modulus of IEM and Pt-IPMC increased by 57.92% -14.05% and 9.06% 52.85%. MWCNTs effectively modified the internal electrodes of Pt-IPMC and significantly improved the dynamic displacement, dynamic response and deformation rate.