丁二酰亚胺体系无氰镀银添加剂的研究

发布时间：2017-12-28 07:00

本文关键词：丁二酰亚胺体系无氰镀银添加剂的研究　出处：《电镀与涂饰》2016年03期 　论文类型：期刊论文

【摘要】：先通过单因素试验研究了光亮剂苯骈三氮唑(BTA)、丙烷磺酸吡啶摀盐(PPS)和表面活性剂OP-10、平平加对无氰镀银层光泽度的影响。基础镀液组成和工艺条件为:硝酸银45 g/L,丁二酰亚胺80 g/L,焦磷酸钾70 g/L,5,5-二甲基乙酰脲(DMH)15 g/L,氢氧化钾40 g/L,p H 9.0~9.5,温度20~30°C,电流密度0.3 A/dm2,时间30 min。再通过正交试验对上述4种物质进行复配,得到较优复合添加剂:BTA 20 mg/L,PPS 10 mg/L,OP-10 50 mg/L,平平加20 mg/L。加入复合添加剂后,镀液的电流效率、分散能力和覆盖能力分别为99.3%、75.4%和100.0%,稳定性好。所得镀银层沿(111)和(200)晶面的取向更为明显,结晶均匀、细致,表面平整,光泽度达271 Gs,结合力和抗变色性优良。
[Abstract]:First, through the single factor experiments of brightener three benzo triazole (BTA), propane sulfonic salt cover (PPS) effect and surfactant OP-10, peregal of cyanide free silver plating layer gloss. The basis of bath composition and process conditions were as follows: silver nitrate, 45 g/L, two D imide 80 g/L, potassium pyrophosphate 70 g/L, 5,5- dimethyl hydantoin (DMH) 15 g/L, 40 g/L P H 9.0~9.5 Koh, and the temperature of 20~30 DEG C, current density of 0.3 A/dm2, 30 min. Through the orthogonal test, the above 4 substances were mixed, and the better compound additives were obtained: BTA 20 mg/L, PPS 10 mg/L, OP-10 50 mg/L, and flat plus 20 mg/L. After adding compound additive, the current efficiency, dispersing capacity and covering capacity of the plating bath are 99.3%, 75.4% and 100% respectively, and the stability is good. The silver coating has more obvious orientation along (111) and (200) crystal surface. The crystallization is uniform and meticulous, the surface is smooth, the glossiness reaches 271 Gs, the binding force and the anti discoloration property are excellent.
【作者单位】：贵州大学化学与化工学院;
【基金】：2016年贵州大学研究生创新基金(研理工2016010) 2015贵州省科技计划(黔科合GZ字[2015]3032)
【分类号】：TQ153.16
【正文快照】： 随着人们环保意识的增强,近年来有关无氰镀银的研究备受关注。从无氰镀银的发展历史来看,对无氰镀银的研究主要有两个目的:一是找到或合成无毒、无害并能够与银离子稳定配位的配位剂;二是研制出有机或无机添加剂来改善镀液与镀层的综合性能[1-5]。当前,对无氰镀银的研究侧重于

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