ISSN: 1813-0410

Keywords : Pigments glaciation

Adding hydrazine to pigments to prevent corrosion of ferrous alloys

journal of kerbala university, Volume 7, Issue 4, Pages 134-139

Exposed pigments to the phenomenon of glaciation when leaving cans open to the atmosphere for a relatively short period and shorten this period when dyeing process due to shake paint brush and enter the air that cause icing because oxidation leading to damage the top layer of paint and that must be removed. Causing this layer many problems during dyeing process as it loss in production, and suffer establishments employing dyeing immersion of this phenomenon is the phenomenon of sedimentation pigment in the case of storage long so it becomes difficult melted and blended. as the porosity that leave after dye part be a source of corrosion and the formation of rust, for ease of access of water and air to the metal surface so the idea of using chemicals proportions few to control the problems above, using material Hydrazine water (N2H4.H2O) by mass 0.25% results were good for the dye iron oxide red dye Alalekada enamel. As for dye lead oxide red, the material Hydrazine For gravimetric mentioned can not protect pigment of icing for a long time (one day) because attacking the dye by hydrazine, in the case of increasing the proportion of Hydrazine to 0.5%, this leads to severe reaction editor nitrogen so you can not close the lids cans due to the pressure of this gas on it .