Environment-friendly dual-curing vacuum coating primer special for automobile wheel hub
A dual-curing technology for automobile wheels, which is applied in the direction of epoxy resin coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of uncurable shadow parts and weak metal surface adhesion, etc., to achieve strong adhesion and Good plating performance, good leveling and covering effect
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[0027] The present invention will be further elaborated below with specific examples, which are only for illustration and do not limit the scope of the invention.
[0028] Preparation of primer:
[0029] (1) Put reactive diluent, aliphatic epoxy acrylate, aliphatic urethane diacrylate and novolac epoxy acrylate into the reaction kettle, heat and stir at 45°C for 1 hour to dissolve;
[0030] (2) Add isocyanate-containing urethane acrylate and photoinitiator into the reactor, and stir for 0.5h;
[0031] (3) Finally, add the additives into the reaction kettle, stir at high speed for 0.5h, filter with a 500-mesh filter cloth, and finally pack it in barrels.
[0032] The following examples were all prepared as above.
[0033] Primer formulation:
[0034] Each embodiment carries out batching according to the mass ratio in Table 1 and Table 2 respectively and prepares the dual curing vacuum coating primer special for environment-friendly type automobile hub of the present inventio...
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