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多壁碳纳米管改性铂型IPMC的试验研究

, PP. 47-55

Keywords: 离子聚合物金属复合材料,多壁碳纳米管,铂电极,力学性能,动态位移

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Abstract:

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。

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