A kind of aqueous phase sealing agent and using method thereof
A technology of sealing agent and water phase, applied in the direction of metal material coating process, etc., can solve the problems of reducing economic benefits of enterprises, increasing production costs of enterprises, and difficulty in waste liquid treatment, so as to facilitate popularization and application, reduce enterprise costs, Effect of effect improvement
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Embodiment 1
[0026] The preparation of water phase sealing agent: 10g isopropanol, 0.04g triethanolamine, 4g tripropylene glycol methyl ether, 0.03g 1-phenyl-5-mercaptotetrazolium, 0.1g 2-mercaptobenzothiazole, 0.1g polyethylene After mixing pyrrolidone, 2 g of fatty acid methyl ester and ethylene oxide condensate, an aqueous solution is added to prepare 100 ml of an aqueous phase sealing agent (total mass is about 100 g), and a pH regulator is added to adjust the pH to 10.5.
[0027] How to use the water-phase sealing agent: After activating the plated parts with 0.5mol / L nitric acid for 15 seconds, immerse it in the above-mentioned water-phase sealing agent in a 0.7kw ultrasonic environment for 2 minutes, and the temperature of the water-phase sealing agent is constant at 40℃ , Wash and dry after sealing. The hard printed circuit black oil board treated with the water phase sealing agent can withstand 96 hours of neutral salt spray without corrosion.
Embodiment 2
[0045] Preparation of water phase sealing agent: 20g ethanol, 0.05g diethanolamine, 1.5g propylene glycol methyl ether, 0.19g 1-phenyl-5-mercaptotetrazolium, 0.06g 2-mercaptobenzothiazole, 0.25g polyvinylpyrrolidone, After mixing 1.6 g of rhamnolipids, add an aqueous solution to prepare 100 ml of water phase sealing agent (total mass about 100 g), and add a pH regulator to adjust the pH to 8.
[0046] How to use the water-phase sealing agent: After activating the plated parts with 0.4mol / L sulfuric acid for 10 seconds, immerse it in the above-mentioned water-phase sealing agent for 3 minutes. The temperature of the water-phase sealing agent is constant at 45°C. After sealing, wash and bake with water dry. The hard printed circuit black oil board treated with this water phase sealing agent can withstand 98 hours of neutral salt spray without corrosion.
Embodiment 3
[0048] Preparation of water phase sealing agent: 15g isopropanol, 0.02g triethanolamine, 3g tripropylene glycol methyl ether, 0.3g 1-phenyl-5-mercaptotetrazole, 0.01g 2-mercaptobenzothiazole, 0.4g polyethylene After mixing pyrrolidone and 0.1 g of sodium lauryl sulfonate, an aqueous solution was added to prepare 100 ml of water phase sealing agent (total mass about 100 g), and a pH regulator was added to adjust the pH to 4.5.
[0049] How to use the water-phase sealing agent: After activating the plating piece with 0.1mol / L hydrochloric acid, immerse it in the above-mentioned water-phase sealing agent under 0.4kw ultrasonic environment for 2 minutes. The temperature of the water-phase sealing agent is constant at 37℃, and the sealing After washing and drying. The soft printed circuit butter board treated with this water phase sealing agent can withstand 96 hours of neutral salt spray without corrosion.
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