A kind of UV-led light curing vacuum coating primer and preparation method thereof
A UV-LED and vacuum coating technology, which is applied in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor physical and mechanical properties and chemical properties of coatings, short service life, and environmental pollution. Achieve the effect of good adhesion, good effect and fast curing speed
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[0034] In terms of mass percentage, the UV-LED light-curing vacuum coating primer provided by the present invention includes 5-10% of epoxy acrylate, preferably 6-8%. In the present invention, the molecular weight of the epoxy acrylate is preferably 3000-6000, more preferably 4000-5000. The present invention has no special requirements on the source of the epoxy acrylate, and the conventional commercially available or self-prepared epoxy acrylate in this field can be used; when the epoxy acrylate is prepared by itself, the preparation method preferably includes The following steps:
[0035] Mix epoxy resin with acrylic acid, polymerization inhibitor and catalyst to carry out copolymerization reaction to obtain epoxy acrylate.
[0036] In the present invention, the polymerization inhibitor is preferably hydroquinone, and the catalyst is preferably triethylamine; the mass ratio of the epoxy resin, acrylic acid, polymerization inhibitor and catalyst is preferably 39:14.5:0.2: 1...
Embodiment 1
[0054] (1) Epoxy acrylate, urethane acrylate, reactive diluent, photoinitiator, auxiliary agent, solvent are added in the batching bucket by the mass proportion of embodiment 1 in table 1, carry out to the total weight of coating and batching bucket Weigh it and record it as G1, then use a grinding and dispersing mixer to stir evenly at room temperature at a stirring speed of 1000rpm, and stir until the coating has no coagulation or separation, which is considered to be uniform;
[0055] (2) After the stirring is completed, weigh the paint and the batching tank again, record it as G2, and then add (G1-G2) the solvent lost due to volatilization during the stirring process, and then use the grinding and dispersing mixer to stir the paint evenly, The stirring speed is 1000 rpm, and the stirring time is 3 minutes, and the UV-LED light-curing vacuum coating primer is obtained.
Embodiment 2
[0057] The raw materials were added according to the mass ratio of Example 2 in Table 1, and the preparation method was the same as that of Example 1 to obtain the UV-LED photocurable vacuum coating primer.
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Abstract
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