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Preparation process of palladium electrode ion polymer and metal composite

A technology of metal composite materials and ionic polymers, applied in metal material coating technology, liquid chemical plating, coating, etc., can solve the problems of limited deformation capacity, long preparation cycle, low efficiency, etc., and achieve excellent actuation performance , reduced time, and improved preparation efficiency

Inactive Publication Date: 2011-08-31
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the material prepared by this process has some defects. First, under the action of DC voltage, the material deforms to the anode and then has a large relaxation deformation, which is unfavorable for the application as a DC actuator; second, under the action of alternating current, Its deformation ability is still limited; third, the preparation cycle is longer and the efficiency is lower

Method used

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  • Preparation process of palladium electrode ion polymer and metal composite
  • Preparation process of palladium electrode ion polymer and metal composite
  • Preparation process of palladium electrode ion polymer and metal composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Base membrane pretreatment:

[0028] Cut out a Nafion-117 ion exchange membrane with a size of 6cm×6cm as the base material; use 1200# sandpaper to polish and roughen it, one side for 10 minutes, observe the surface under the light to become rough and have no obvious bright spots, and you can end the polishing; ultrasonic cleaning The instrument is set at 60°C and the power is 250W. After cleaning the matrix film for 30 minutes, put it into 200ml, 2mol / L HCl, boil it in a water bath at 90°C for 30 minutes, and then put it in a water bath of 200ml deionized water at 90°C for 30 minutes to make it fully swelling. Finally, the pretreated Nafion membrane was stored in deionized water.

[0029] (2) Immersion reduction plating: Immersion reduction plating is to deposit a metal catalytic layer on the two surfaces of the base film, which is the chemical reaction basis of the next electroless plating. Soak the pretreated base film in [Pd(NH 3 ) 4 ] Cl 2 In salt solution...

Embodiment 2

[0041] (1) Base membrane pretreatment:

[0042] A Nafion-117 ion exchange membrane with a size of 6cm×6cm was used as the base material. The difference from Example 1 was that the base membrane was polished with 600# sandpaper for 5 minutes on one side.

[0043] (2) Immersion reduction plating:

[0044] 1. ion exchange: different from Example 1: the palladium salt solution concentration is 0.008mol / L, in this palladium salt solution, by every gram of Pd (NH 3 ) 4 Cl 2 Add 60ml of ammonia water with a mass concentration of 25%, that is, use 0.34g [Pd(NH 3 ) 4 ]Cl 2 , 170ml of deionized water, 20ml of ammonia water (25%) is configured as a palladium salt solution; the soaking time at room temperature is 1.5h.

[0045] ②Ion reduction: The difference from Example 1 is that the ultrasonic cleaner is set at 40°C; a beaker containing 160ml of deionized water is put into the ultrasonic cleaner, and 0.5ml of ammonia water (25%) is added; In the beaker, add 4ml of 3% NaBH 4 solu...

Embodiment 3

[0052] (1) Base membrane pretreatment:

[0053] A Nafion-117 ion exchange membrane with a size of 6cm×6cm was used as the base material. The difference from Example 1 was that the base membrane was polished with 600# sandpaper for 5 minutes on one side.

[0054] (2) Immersion reduction plating:

[0055] 1. ion exchange: different from Example 1: in this palladium salt solution, by every gram of Pd (NH 3 ) 4 Cl 2 Add 45ml of ammonia water with a mass concentration of 25%, that is, use 0.34g [Pd(NH 3 ) 4 ]Cl 2 , 140ml deionized water, 15ml ammonia water (25%) is configured into palladium salt solution;

[0056] 2. Ion reduction: Different from Example 1, put the beaker filled with 160ml deionized water into the ultrasonic cleaner, add 0.7ml ammonia water (25%); put the base film into the beaker, add 2ml 7% NaBH 4 solution; then add 2ml of 3% NaBH every 30min 4 After 1.5 hours, the ion reduction is completed, and the ion membrane is rinsed with deionized water.

[0057]...

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Abstract

The invention discloses a preparation process of a palladium electrode ion polymer and metal composite, which is used for preparing a palladium metal electrode IPMC (Ion Polymer Metal Composite) by using immersion reduction plating and chemical plating methods in which an ion exchange membrane is used as a matrix material and [Pd (NH3)4] C12 is used as a main salt. The preparation process comprises the following four main steps of: (1) pretreatment of the matrix membrane: carrying out roughening, surface cleaning, foreign ion removal and full swelling on the matrix membrane; (2) immersion reduction plating including two processes, i.e., ion exchange and ion reduction: subjecting a pretreated Nafion membrane to repeated palladium ion immersion and exchange, and reducing the pretreated Nafion membrane with NaBH4 by adopting ultrasonic waves to form palladium metals on the surface and the internal surface of the ion exchange membrane; (3) chemical plating: wherein the thickening electrodes on the outer surface of a core material to compact internal surface electrodes by using an improved chemical plating method; and (4) postprocessing of the composite. The preparation process has a higher popularization value due to relatively improved efficiency, relatively lower cost and excellent actuation response.

Description

technical field [0001] The invention relates to a preparation method of a palladium electrode type ionic polymer-metal composite material, in particular to a chemical preparation method for improving the performance of the material and improving the process flow and process parameters. Background technique [0002] Ionic polymer-metal composites (IPMCs), a typical ionotropic electroactuated polymer, are a new class of smart materials with both sensing and actuation functions. Compared with other similar materials, IPMC has outstanding advantages such as light weight, low driving voltage, good flexibility, and rapid response. All show broad application prospects. IPMC material is composed of ion exchange membrane core layer material and metal electrode layer material, which is usually formed by combining the electrode layer and ion exchange membrane by physical or chemical methods. The applicant has applied for an invention patent on the basic preparation process of Pd-Nafi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/44C23C18/20
Inventor 陈花玲常龙飞朱子才王永泉李博
Owner XI AN JIAOTONG UNIV
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