Study On Optimization Of Surface Modifiers Applied For Bronze Powder And Gloss Of The Powder

This paper investigated the surface modification technique of bronze powder and gloss of gold ink. The effect of single surfactant and mixed surfactant on the wetting property , leafing property and gloss of gold powder were analyzed. Through the results, the surface modifiers of bronze powder were optimized, and the relative factors on gloss of gold ink were studied by the methods of orthogonal experiments. The results showed that:1. Based on the effect of surface modification of bronze powder using different surfactants, the importance of mixed surfactant was established. This result promoted the surface treatment technology of bronze powder which was used to using single surfactant.2. The critical factors influencing the wetting property and leafing property of bronze powder were studied by changing surface energy of powder and solvent. Thereby certain new relation between wetting property and leafing property was established, providing the worst wetting property of bronze powder did not correspond with the highest leafing value. The results deepened the recognition for leafing property theory of bronze powder.3. The results of orthogonal experiments showed that the different surface modifiers had the different effect on gloss of the powder, besides the mixed surfactants stearic acid:SA and stearate:SA could give higher gloss value. In addition, chosing the right kind of resin used to make up ink was not neglect, and the results showed that the gold ink consisted of acrylic resin had the highest gloss.4. Based on above results, the highest gloss value of bronze powder in this experiment was up to 81.9, which was superior to domestic advanced level(44.5) and close to international advanced level.