Flexible nanofiber membrane surface palladium-free chemical copper plating method
A technology of nanofiber film and electroless copper plating, which is applied in the direction of liquid chemical plating, fiber treatment, fiber type, etc., can solve the problems of poor electromagnetic shielding, easy peeling off of the plating layer, uneven copper plating, etc., and achieve low surface resistance and conductivity Excellent performance of anti-corrosion and electromagnetic shielding, and the effect of increasing surface polarity and surface energy
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Embodiment 1
[0054] A method for palladium-free electroless copper plating on the surface of a flexible nanofibrous membrane, comprising the steps of:
[0055] S1. Nanofiber membrane preparation:
[0056] Put the flexible polyethylene non-woven fabric substrate in a solution of detergent, sodium carbonate and deionized water with a mass ratio of 1:3:1000, treat it in a water bath at 80°C for 1 hour, take out the polyethylene non-woven fabric and wash it with deionized water Wash until neutral, and dry at 60°C for 1 hour to obtain a pre-washed flexible polyethylene nonwoven fabric.
[0057] The PVA-co-PE nanofibers with a diameter of 200nm are configured into a PVA-co-PE nanofiber suspension with a concentration of 1wt%, and the suspension is evenly sprayed on the surface of the pre-washed flexible polyethylene non-woven fabric, After drying, a layer of PVA-co-PE porous nanofiber membrane is formed on the surface of the polyethylene non-woven fabric to obtain a nanofiber membrane, and the ...
Embodiment 2-6
[0073] A method for palladium-free electroless copper plating on the surface of a flexible nanofiber membrane, compared with Example 1, the difference is that in step S1, the concentration of the PVA-co-PE nanofiber suspension and the PVA-co-PE nanofiber The diameters are different, and the others are substantially the same as those in Embodiment 1, and will not be repeated here.
[0074] The flexible conductive film prepared in Examples 1-6 is subjected to a performance test, and the results are shown in Table 1:
[0075] The performance test of the flexible conductive film that table 1 embodiment 1-6 prepares
[0076] Example Concentration (wt%) Diameter (nm) Conductivity (s / cm) Electromagnetic shielding effectiveness (dB) Example 1 1 200 4897.1 58.0 Example 2 0.5 200 3508.7 35.6 Example 3 3 200 5107.5 60.4 Example 4 1 50 4386.8 55.2 Example 5 1 400 5604.2 62.7 Example 6 1 800 5237.1 61.2
[0077] I...
Embodiment 7-11
[0083] A palladium-free electroless copper plating method on the surface of a flexible nanofiber membrane, compared with Example 1, the difference is that in step S2, the time of plasma treatment and the concentration of the acrylic acid solution are different, and the others are roughly the same as Example 1 , which will not be repeated here.
[0084] The flexible conductive film prepared in Examples 7-11 was tested for performance, and the results are shown in Table 2:
[0085] The performance test of the flexible conductive film that table 2 embodiment 7-11 prepares
[0086] Example time (min) Concentration (wt%) Conductivity (s / cm) Electromagnetic shielding effectiveness (dB) Example 1 5 10 4897.1 58.0 Example 7 2 10 4302.4 52.6 Example 8 10 10 4985.2 59.4 Example 9 20 10 4632.7 55.8 Example 10 5 5 4536.8 54.4 Example 11 5 20 5243.7 60.4
[0087] It can be seen from Table 2 that with the increase ...
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Abstract
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