Water-based UV curving vacuum electroplating finishing coating, preparation method and electroplating method thereof

[0046] The preparation method of waterborne UV curing vacuum electroplating topcoat provided by the present invention includes the following steps:

[0047] (1) Add the water-based acrylate, trimethylolpropane triacrylate, cosolvent, and leveling agent into the disperser according to the formula ratio and stir at 400~500r / min for 5~15min;

[0048] (2) Add the water-based polyurethane acrylate, photoinitiator, and water to the mixture in step (1) and stir at 900~1100r / min for 5~10min.

[0049] The method for electroplating water-based UV curing vacuum electroplating topcoat provided by the present invention includes the following steps:

[0050] (1) Material handling:

[0051] a) Top coat treatment: filter the top coat with a 600 mesh filter for use;

[0052] b) Pretreatment: wipe the substrate with alcohol to remove oil stains and dust on the substrate, spray primer, and the air pressure of the spray gun is 2.0~3.0kg / cm 2 , The distance between the spray gun and the coating surface is

[0056] Example 1

[0057] A water-based UV curing vacuum electroplating topcoat, which includes the following components and mass parts:

[0058] Water-based polyurethane acrylate (Hefei Polymerization Radiation 709T) 50 parts;

[0059] 25 parts of water-based acrylate (BASF 7602LV);

[0060] 3 parts of trimethylolpropane triacrylate;

[0061] Leveling agent (EFKA 3777) 1.2 parts;

[0062] Photoinitiator (phenyl bis (2.4.6-trimethylbenzoyl) phosphine oxide) 6 parts;

[0063] Cosolvent (ethylene glycol butyl ether) 18 parts;

[0064] 45 parts of water.

[0065] The preparation method of the coating includes the following steps:

[0066] (1) Add water-based acrylate, trimethylolpropane triacrylate, cosolvent, and leveling agent into the disperser according to the formula ratio and stir at 480 r / min for 12 min;

[0067] (2) Add the water-based polyurethane acrylate, photoinitiator, and water to the mixture in step (1) and stir at 950 r / min for 6 min.

[0068] Example 2

[0069] A water-based UV curing vacuum electroplating topcoat, which includes the following components and mass parts:

[0070] 30 parts of water-based polyurethane acrylate (Hefei polymerization and radiation HF800);

[0071] 15 parts of water-based acrylate (BASF 7601LV);

[0072] 7.5 parts of trimethylolpropane triacrylate;

[0073] Leveling agent (BYK 346) 0.3 parts;

[0074] Leveling agent (BYK 333) 0.5 part;

[0075] 3 parts of photoinitiator (2-hydroxy-2-methyl-1-phenyl-1-acetone);

[0076] Cosolvent (isopropanol) 12 parts;

[0077] 55 parts of water.

[0078] The preparation method of the coating includes the following steps:

[0079] (1) Add the water-based acrylate, trimethylolpropane triacrylate, cosolvent, and leveling agent into the disperser according to the formula ratio and stir at 450 r / min for 10 min;

[0080] (2) Add the water-based polyurethane acrylate, photoinitiator, and water to the mixture in step (1) and stir at a speed of 1000 r / min for 8 min.