防指纹膜技术在18K金合金表面的应用探讨  

Discussion of the Application of Anti-Fingerprint Coating Technology on Gold Alloy Surface for Jewelry

作　　者：袁军平[1] 金莉莉 郭礼淳 王昶[1] 梁健辉 陶震东 YUAN Junping;JIN Lili;GUO Lizhun;WANG Chang;LIANG Jianhui;TAO Zhendong(Jewelry Institute of Guangzhou Panyu Polytechnic,Guangzhou 511483,China;Shenzhen Haochong Jewelry Technology Co.Ltd,Shenzhen 518000,China;Guangzhou Laboratory of National Gemstone Testing Center,Guangzhou 511483,China)

机构地区：[1]广州番禺职业技术学院珠宝学院,广东广州511483 [2]深圳昊翀珠宝科技有限公司,广东深圳518000 [3]国家珠宝检测中心(广东)有限责任公司,广东广州511483

出　　处：《电镀与精饰》2022年第3期40-46,共7页Plating & Finishing

基　　金：广东省高职院校珠宝首饰产教融合创新平台(2021CJPT001);广州市高等职业教育双师工作室项目(穗教高教[2019]15号)。

摘　　要：首饰表面在佩戴使用中常易黏附指纹、油污等,影响其外观效果。本文采用18K金合金首饰材料为基底,采用反应磁控溅射工艺在其表面沉积二氧化硅底膜,再用真空蒸镀法沉积有机氟化物防指纹膜。采用X射线荧光光谱分析仪检测基材的成色,采用接触角测试仪、橡皮摩擦试验仪、激光共聚焦显微镜、原子力显微镜、测色仪、耐变黄老化试验箱、人工汗液浸泡试验槽等分别检测了膜层的疏水(油)性能、表面形貌及耐摩擦性能、颜色及耐蚀性等。结果表明,在合适的工艺参数下,防指纹膜层的平均水接触角可达115°,油接触角可达110°,有优良的抗脏污效果和顺滑触感。经摩擦、腐蚀、老化等试验后,膜层的疏水自洁性能依然良好。防指纹膜不会改变首饰贵金属成色,但会对XRF检测成色的精度以及首饰外观颜色产生影响,且影响程度与镀膜工艺参数相关。因此,生产中需要从防指纹性能、成色检测保证和外观效果等方面综合权衡来优化镀膜工艺。Jewelry surface is prone to adhere fingerprint and greasy dirt when it is worn,which diminishes its appearance.In this paper,18K gold alloy for jewelry was used as the substrate material,and SiO2 bottom film was deposited on the substrate by reactive magnetron sputtering technology,and anti fingerprint coating of organic fluoride was further deposited by vacuum evaporation process.The fineness of the base material was tested with X ray fluorescence spectrometer,and the coating’s performances,including the hydrophobicity,lipophobicity,topography,abrasion resistance,color and corrosion resistance,were tested with contact angle tester,rubber friction tester,Laser Scanning Confocal Microscope,spectrophotometer,aging resistance test chamber,artificial sweat soaking test chamber,etc.The results show that under the suitable process conditions,the average contact angle of the anti fingerprint coating for water and oil is no less than 115°and 110°respectively,which shows excellent smudginess resistance and smooth feeling.After the abrasion test,aging test and corrosion test,the coating still keeps good hydrophobicity and self-cleaning property.The anti-fingerprint film does not change the precious metal fineness,but it will interfere with the nondestructive XRF testing result and affect the jewelry appearance color,while the influence degree is related to the coating process parameters.Therefore,to determine the optimized coating process,it is necessary to balance the anti-fingerprint performance,the guarantee of fineness detection and the appearance effect.

关 键 词：首饰 真空蒸镀 防指纹膜 接触角 膜层性能 

分 类 号：TQ153.12[化学工程—电化学工业]