Nickel-nanodiamond composite plating solution and preparation thereof
A technology of nano-diamond and composite plating solution, which is applied in the direction of electrolytic coating, coating, etc., can solve the problems that the nano-diamond suspension cannot be kept stable for a long time, the structure and performance of the composite coating are difficult to control stably, and the cost of electroplating is increased, etc., to achieve stability Effects of controlling structure and performance, bright composite coating, and reducing electroplating cost
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Embodiment 1
[0039] First pre-treat the nano-diamonds according to the following steps: put 8 stainless steel balls with a diameter of 6-8mm and 10g of unpurified nano-diamonds into two identical 100ml nylon tanks, and then add 5ml of absolute ethanol dropwise , and sealed with a nylon cap. Put two ball mill jars into a planetary ball mill (QM-BP type, manufactured by Nanjing University) symmetrically, and ball mill for 48 hours under the condition that the rotation speed is 350 rpm and the rotation direction is automatically switched every 30 minutes. Then soak and reflux with 30-50wt% hydrofluoric acid aqueous solution for 24h, filter, wash with running water, and dry; in 2M HNO 3 Sonicate in the solution for 24 hours, reflux for 24 hours, filter, and wash with running water; then sonicate for 5 hours in an aqueous solution of OP-10 with a pH of 8-10 and a concentration of 20-40wt%, filter, and wash with running water for 2-3 times. After three times, soak in 3M HCl solution, sonicate f...
Embodiment 2
[0056] The nano-diamond is firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.
[0057] Then take 7g of the pretreated nano-diamond and add it to 300ml of acetone dissolved with 28g of phosphorus tribromide, stir at 35°C for 8h, and after ultrasonic reaction at 55°C for 72h, centrifuge at a speed of 5000rpm for 30min. After the carbon was cleaned, it was vacuum-dried at 30° C. for 36 hours to obtain nanodiamonds with acid halide functional groups on the surface.
[0058] Take 6g of the above-mentioned nano-diamond with acid halide functional groups on the surface, add it to 280ml N-methylpyrrolidone containing 19g 1,3-propanediamine and 17ml triethylamine, stir at 50°C for 8h, and ultrasonicate at 30°C After reacting for 12 hours, wash with tetrahydrofuran, and vacuum-dry at 20° C. for 48 hours to obtain modified nanodiamonds with amino groups on the surface.
[0059] 8 g of the above-mentioned modified nano-diamonds with a...
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