A kind of method for coating multi-layer metal on the surface of carbon fiber
A multi-layer metal and carbon fiber technology, which is applied in the direction of carbon fiber, fiber treatment, metal material coating technology, etc., can solve the problems of environmental pollution, impurities sticking to the surface of carbon fiber, and increased Pd consumption, so as to reduce environmental pollution and reduce cost. , the effect of reducing consumption
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Embodiment 1
[0032] Embodiment 1 A kind of preparation method of Cu / Ni double coating on carbon fiber surface, steps and conditions are as follows:
[0033] The first step: pretreatment of carbon fiber
[0034] (a) Degumming: put the carbon fiber into the acetone plating solution and oscillate ultrasonically for 1 hour, take it out, wash it with deionized water, and dry it at room temperature;
[0035] (b) Coarsening: put the degummed carbon fiber into 65wt% nitric acid plating solution and ultrasonically oscillate for 1 hour, take it out, wash it with deionized water until the pH value reaches neutral, and dry it at room temperature;
[0036] (c) Sensitization: Put the roughened carbon fiber into the sensitizing bath, soak for half an hour, take it out, clean it with deionization, and dry it at room temperature; the ratio of the sensitization bath is: SnCl 2 , 20 g / L; 37wt% HCl, 40 mL / L; the rest is deionized water;
[0037] The sensitization process is to make the carbon fiber surface ad...
Embodiment 2
[0050] Embodiment 2 A kind of preparation method of Cu / Co double coating on carbon fiber surface, steps and conditions are as follows:
[0051] The first step: the pretreatment of carbon fiber, with embodiment 1;
[0052] Second step: carbon fiber electroless Cu plating, with embodiment 1;
[0053] The third step: electroless Co plating on the surface of Cu-plated carbon fiber, the formula of the electroless Co plating solution is: CoSO 4 , 20 g / L; NaH 2 PO 2 · H 2 O, 30 g / L; Na 3 C 6 h 5 o 7 · 2H 2 O, 28 g / L; the rest is deionized water; adding pH regulator is NH 3 ·H 2 O, the pH value of the plating solution was adjusted to 12.5; the electroless Co plating temperature was 85° C.; the rest were the same as in Example 1.
[0054] Through calculation, the thickness of the first layer of Cu coating is 0.5 μm, and the thickness of the second layer of Co coating is 0.3 μm. The surface morphology of the obtained Cu / Co double-coated carbon fiber is as follows image 3 sh...
Embodiment 3
[0055] Embodiment 3 A kind of preparation method of Ni / Co / Ag triple coating on carbon fiber surface, steps and conditions are as follows:
[0056] The first step: the pretreatment of carbon fiber, with embodiment 1;
[0057] The second step: carbon fiber electroless Ni plating
[0058] Put the carbon fiber pretreated in the first step into the constant temperature water bath, add the electroless Ni plating solution into the water bath, heat the constant temperature water bath to 75°C, keep it warm for 10 minutes, and add the pH regulator NH 3 · H 2 O, the pH value of the regulator plating solution is 8, take it out after 5 minutes of plating, put the carbon fiber taken out into the ethanol plating solution for ultrasonic cleaning, and dry it in a 100°C drying oven;
[0059] The formula of electroless Ni plating solution is: NiSO 4 · 6H 2 O, 25 g / L; NaH 2 PO 2 · H 2 O, 22 g / L; Na 3 C 6 h 5 o 7 2H 2 O, 30 g / L; NH 4 Cl, 22 g / L; the rest is deionized water; the electr...
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