UV finish paint for wheel hub and preparation method of UV finish paint
A technology of topcoat and wheel hub, applied in the field of color topcoat, can solve the problems of brittleness and easy yellowing of topcoat, and achieve the effect of improving poor weather resistance, good workability, ensuring adhesion and various properties.
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Embodiment 1
[0016] Prepare raw materials, UV-PU dual curing resin 40%, UV polyurethane acrylic resin 20%, deep curing photoinitiator 5%, aluminum powder 6%, functional monomer 8%, silicone substrate leveling wetting agent BYK333 0.5% , UV color paddle 8.5%, UV absorber 1.0%, HDI curing agent N3390 stock solution 6%, solvent 5%.
[0017] First, dissolve the photoinitiator with a solvent, soak the aluminum powder slurry with a solvent for later use, then put the UV resin, monomer, UV absorber, substrate wetting aid, etc. into the paint mixing tank, and control the stirring speed at 500 Stir for 10 minutes at -600 rpm, then add the dissolved photoinitiator and silver paste, stir for 10 minutes at 800 rpm, and use UV thinner to adjust the viscosity of Tu-4 viscosity cup for 60-80 seconds . The curing agent is added on the spray board, the paint is packaged in 2K, paint: curing agent = 100:6.
Embodiment 2
[0019] UV-PU dual curing resin 40%, UV polyurethane acrylic resin: 22%, deep curing photoinitiator 6%, aluminum powder 3%, functional monomer 10%, silicone substrate leveling wetting agent BYK333 0.5%, UV 5.5% color paddles of various colors, 1.0% UV absorber, 6% solvent, 6% stock solution of HDI curing agent N3390.
[0020] First, dissolve the photoinitiator with a solvent, soak the aluminum powder slurry with a solvent for later use, then put the UV resin, monomer, UV absorber, substrate wetting aid, etc. into the paint mixing tank, and control the stirring speed at 500 -600 rpm, stir for 10 minutes, then add the dissolved photoinitiator and silver paste, stir at 800 rpm for 10 minutes, use UV color paste for coloring, after the coloring is completed, use UV The thinner is adjusted to the viscosity of Tu-4 viscosity cup for 60-80 seconds. The curing agent is added on the spray board, the paint is packaged in 2K, paint: curing agent = 100:6.
Embodiment 3
[0022] UV-PU dual curing resin 47%, UV polyurethane acrylic resin: 20%, deep curing photoinitiator 4%, functional monomer 10%, organosilicon substrate leveling wetting agent BYK333 0.5%, UV absorber 1.5%, Solvent 6%, UV color paste 4%, HDI curing agent N3390 stock solution 7%.
[0023] First, dissolve the photoinitiator with a solvent, then put the UV resin, monomer, UV absorber, substrate wetting aid, etc. into the paint mixing tank, start the stirring speed and control it at 500-600 rpm, and stir for 5 minutes , and then stir the dissolved photoinitiator at 800 rpm for 10 minutes, and use UV thinner to adjust the viscosity of Tu-4 viscosity cup for 60-80 seconds. The curing agent is added on the spray board, the paint is packaged in 2K, paint: curing agent = 100:7.
[0024] In this invention, OH-NCO thermal curing is carried out in places where UV light cannot be irradiated, so as to avoid the problem of poor curing and stickiness of common UV coatings. At the same time, t...
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