Water-based composite passivation solution for galvanized steel plate and preparation method of water-based composite passivation solution
A technology of galvanized steel sheet and passivation solution, applied in the direction of metal material coating process, can solve the problems of complex drying and curing process, poor stability of passivation solution, no self-healing ability of film layer, etc., and achieve fast drying and curing. , Short curing time, improve the effect of fastness and corrosion resistance
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Embodiment 1
[0030] Components and mass fraction of passivation solution: sodium molybdate 10g / L, sodium phosphate 6g / L, organic phosphoric acid 5g / L, fluotitanic acid 1g / L, silane coupling agent 5g / L, sodium metasilicate 10g / L L, wetting and dispersing agent 0.1%, and deionized water as the rest.
Embodiment 2
[0032] Components and mass fraction of passivation solution: sodium molybdate 15g / L, sodium phosphate 5g / L, organic phosphoric acid 5g / L, fluotitanic acid 3g / L, silane coupling agent 10g / L, sodium metasilicate 10g / L L, wetting and dispersing agent 0.1%, and deionized water as the balance.
Embodiment 3
[0034] Components and mass fraction of passivation solution: sodium molybdate 20g / L, sodium phosphate 10g / L, organic phosphoric acid 8g / L, fluotitanic acid 5g / L, silane coupling agent 15g / L, sodium metasilicate 15g / L L, wetting and dispersing agent 0.1%, and deionized water as the balance.
[0035] The performance indexes of the hexavalent chromium passivation solution and the molybdate passivation solution of each embodiment and reference are as follows:
[0036] Table 1 Properties of passivation solution
[0037]
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