(1. 榆林学院 化学与化工学院，榆林 719000；2. 陕西神木化学工业有限公司 仪表车间，神木 719319；
3. 西安理工大学 材料科学与工程学院，西安 710048)
摘 要: 采用物理化学法，用5种不同配比的复合表面活性剂对铜金粉进行表面改性处理。通过对铜金粉的凹印印金光泽度、润湿性测试和微观形貌观察，分析复配比例和添加量对铜金粉印金光泽度的影响机理。结果表明：经硬脂酸与线性高分子聚合物SA以1:0.1复配的复合表面活性剂在添加量为0.2%时改性的铜金粉的光泽度最高，其光泽度值达99.67。铜金粉的凹印印金光泽度与铜金粉在连接料中的润湿性有关，可通过降低铜金粉的润湿性和提高铜金粉在连接料中的漂浮性来进一步提高铜金粉的凹印印金光泽度。
关键字: 铜金粉；表面改性；印金光泽度；润湿性
（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
