Three-proof paint for printed circuit board protection and preparation and use method thereof
A technology for printed circuit boards and conformal paints, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor water resistance, oil resistance and self-cleaning performance of the coating film, and achieve good self-cleaning, oil resistance, high gloss effect
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Embodiment 1
[0026] This embodiment provides a kind of anti-corrosion paint for the protection of printed circuit boards, the three anti-paints include the following components by mass percentage:
[0027]
[0028] Above-mentioned polyurethane acrylate resin can adopt following method to prepare:
[0029] Add 700g of polyester polyol XH-6480 (Nanyang Xianhe New Material Co., Ltd.) into the reaction bottle, after heating at 100°C and vacuuming for 1 hour, add diisocyanate TDI, dissolve and mix evenly and react for 3 hours, polyester polyol The mol ratio scope of the hydroxyl group in and the isocyanate group in the diisocyanate is 0.5: 1; Then add the hydroxyethyl methacrylate (HEMA) relative to the 5wt% of polyester polyol and diisocyanate gross mass in the product, cooling React at 75°C for 1 hour, add 5wt% initiator azobisisobutyronitrile relative to the mass of hydroxyethyl methacrylate, react at 75°C for 6 hours, cool, cool down to 50°C, and then add relative diisocyanate Hydroxyet...
Embodiment 2
[0033] This embodiment provides a kind of conformal paint for the protection of printed circuit boards, which includes the following components by mass percentage:
[0034]
[0035]
[0036] Above-mentioned polyurethane acrylate resin can adopt following method to prepare:
[0037] Add 500g of polyester polyol XH-8350 (Nanyang Xianhe New Material Co., Ltd.) into the reaction bottle, after heating at 120°C and vacuuming for 1 hour, add diisocyanate MDI, dissolve and mix evenly and react for 5 hours, polyester polyol The mol ratio scope of the hydroxyl group in and the isocyanate group in the diisocyanate is 0.8: 1; Then in the product, add the hydroxyethyl methacrylate (HEMA) relative to the 10wt% of polyester polyol and diisocyanate gross mass, cooling React at 85°C for 2 hours, add 5wt% initiator azobisisobutyronitrile relative to the mass of hydroxyethyl methacrylate, react at 85°C for 10 hours, cool, cool down to 60°C, and then add relative diisocyanate Hydroxyethyl ...
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