Gluing aluminum-based cover plate for PCB drilling and preparing method thereof
A glue-coating, aluminum-based technology, used in coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc. The effect of reducing wire wrapping, improving hole wall roughness and prolonging service life
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Embodiment 1
[0041] Take 0.3 parts of carboxymethyl cellulose, 5 parts of polyvinylpyrrolidone (PVP-K30), 6 parts of polyvinyl alcohol, 8 parts of polyethylene glycol, and 2 parts of polyoxyethylene polypropylene ether, and add them to 40 parts of distilled water in sequence, Under the condition of 25°C, it was fully dissolved by mechanical stirring, and then 30 parts of water-based polyurethane resin, 4 parts of water-based soybean oil-rosin-based hyperbranched polyester solution, 3 parts of polypropylene glycol (PPG-400), and 1 part of leveling agent were added. part, 0.7 part of silane coupling agent, after stirring evenly, filter and stand for defoaming for later use.
[0042] The above-mentioned water-based composite polymer resin is coated on the surface of aluminum foil with a thickness of 0.10mm by a roller coating machine, the coating thickness is 0.04mm, and the speed is 6m / min. Baking line drying, the drying temperature is 100 ° C, that is, the glue-coated aluminum-based cover p...
Embodiment 2
[0044] Take 0.3 parts of carboxymethyl inulin, 6 parts of polymethacrylic acid, 9 parts of polyethylene oxide, 9 parts of polyvinyl alcohol, and 2 parts of polyoxyethylene polypropylene ether, and add them to 45 parts of distilled water in sequence. Under mechanical stirring to fully dissolve, then add 20 parts of water-based epoxy resin, 4 parts of water-based soybean oil-rosin-based hyperbranched polyester solution, 3 parts of polypropylene glycol (PPG-400), 1 part of leveling agent, silane coupling 0.7 parts of the joint agent, after stirring evenly, filter and stand for defoaming for later use.
[0045] The above-mentioned water-based composite polymer resin is coated on the surface of aluminum foil with a thickness of 0.10mm by a roller coating machine, the coating thickness is 0.04mm, and the speed is 6m / min. Baking line drying, the drying temperature is 95 ° C, that is, the glue-coated aluminum-based cover plate for PCB drilling.
Embodiment 3
[0047] Take 0.3 parts of carboxymethyl starch, 2 parts of polyvinylpyrrolidone (PVP-K90), 12 parts of polyethylene glycol, 5 parts of polyacrylamide, and 3 parts of polyoxyethylene polypropylene ether, and add them to 40 parts of distilled water in turn. Under the condition of 25°C, it was fully dissolved by mechanical stirring, and then 30 parts of acrylic modified water-based alkyd resin, 4 parts of water-based soybean oil-rosin-based hyperbranched polyester solution, and 2 parts of polypropylene glycol (PPG-400) were added. 1 part of leveling agent, 0.7 part of silane coupling agent, after stirring evenly, filter and stand for defoaming for later use.
[0048] The above-mentioned water-based composite polymer resin is coated on the surface of aluminum foil with a thickness of 0.10mm by a roller coating machine, the coating thickness is 0.04mm, and the speed is 6m / min. Baking line drying, the drying temperature is 105 ° C, that is, the glue-coated aluminum-based cover plate ...
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