Method for preparing ion polymer-metal composite material

Abstract

The invention discloses a method for preparing an ionomer-metallic composite material, which adopts a Nafion-117 type ion-exchange film as a matrix material, uses [Pd(NH3) 2]Cl2 as a main salt, and adopts the chemical plating method to prepare a Pb metal type IPMC material. The process flow is divided into four parts: (1) the surface contact areas for ions to penetrate and reduction reaction are increased through sanding and roughening the ion-exchange film; (2) a pretreated Nafion film is impregnated for Pb ion exchange, a strong reducing agent reduces Pb ions, and a Pb metal layer is formed on the surface of the ion-exchange film; (3) secondary reduction is carried out by the improved chemical Pb plating method to thicken electrodes on the surface of a sandwich layer material; and (4) the material is subjected to post-treatment. The method has low cost, and experiments show that the IPMC material prepared has good performance, so that the ionomer-metallic composite material has high promotion value.

Description

Technical field [0001] The invention relates to a preparation method of an ionic polymer-metal composite material, in particular to a preparation method of an ionic polymer-metal composite material based on electroless plating to combine an electrode layer and an ion exchange membrane. Background technique [0002] Ionic polymer-metal composite (IPMC) is an ionic electro-actuated polymer with light weight, good flexibility, rapid response and bidirectional reversible function of sensing-actuation. It can be used to make electromechanical transducers such as actuators. Devices to replace traditional piezoelectric ceramics are new smart materials that have emerged in the past two decades and have great application potential. IPMC material is mainly composed of ion exchange membrane core layer material and metal electrode layer material. The electrode layer and ion exchange membrane are combined by physical or chemical methods. Among them, platinum metal is the most widely studied e...

AI Technical Summary

Problems solved by technology

Platinum electrode type IPMC materials are mainly prepared by electroless plating, and the platinum salt used in the electroless plating process is quite expensive. In comparison, choosing palladium as the electrode material will reduce the preparation cost a lot, but the process of platinum metal type IPMC materials is not For palladium metal

In addition, IPMC using metals such as Ag, Cu and Ni as electrode materials has also been studied to some extent, but these materials themselves are easily oxidized under the action of electricity, making the material performance very unstable.

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