(1. 榆林學院 化學與化工學院，榆林 719000；2. 陜西神木化學工業(yè)有限公司 儀表車間，神木 719319；
3. 西安理工大學 材料科學與工程學院，西安 710048)
摘 要: 采用物理化學法，用5種不同配比的復合表面活性劑對銅金粉進行表面改性處理。通過對銅金粉的凹印印金光澤度、潤濕性測試和微觀形貌觀察，分析復配比例和添加量對銅金粉印金光澤度的影響機理。結(jié)果表明：經(jīng)硬脂酸與線性高分子聚合物SA以1:0.1復配的復合表面活性劑在添加量為0.2%時改性的銅金粉的光澤度最高，其光澤度值達99.67。銅金粉的凹印印金光澤度與銅金粉在連接料中的潤濕性有關，可通過降低銅金粉的潤濕性和提高銅金粉在連接料中的漂浮性來進一步提高銅金粉的凹印印金光澤度。
關鍵字: 銅金粉；表面改性；印金光澤度；潤濕性
（1. School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China;
2. Instrument Workshop, Shaanxi Shenmu Chemical Industry Co., Ltd., Shenmu 719319, China;
3. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China）
Abstract:Five kinds of composite reagents were used to modify the bronze powder by physiochemical method at different proportions and quantities. By testing the print gloss, wetting property and morphology of the bronze powder, the influence mechanism of the different proportions and quantities of the composite reagents on print gloss of bronze powder was analyzed. The results show that the print gloss of the bronze powder modified by 0.2% composite reagent composed of stearic acid and linear polymer SA at proportion of 1:0.1 has the largest value, reaching 99.67. The gravure print gloss of the gold ink is affected by the wetting property and floating of the bronze powder in the acrylic resin, and the composite reagent can improve the gravure print gloss of the gold ink through reducing the wetting property and raising the floating of bronze powder in the acrylic resin.
Key words: bronze powder; modification; print gloss; wetting property
