CN103469261A - 一种无氰镀银溶液添加剂 - Google Patents

一种无氰镀银溶液添加剂 Download PDF

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CN103469261A
CN103469261A CN201310422596XA CN201310422596A CN103469261A CN 103469261 A CN103469261 A CN 103469261A CN 201310422596X A CN201310422596X A CN 201310422596XA CN 201310422596 A CN201310422596 A CN 201310422596A CN 103469261 A CN103469261 A CN 103469261A
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cyanide
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plating solution
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CN103469261B (zh
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金波愔
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HANGZHOU WIN-WIN TECHNOLOGY Co Ltd
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Abstract

本发明涉及一种无氰镀银溶液添加剂,组分配比如下:光亮剂0.1~10g/l,整平剂5~10g/l,络合剂100~600g/l,其余为等离子水;所述的中光亮剂为含氮化合物,是三氮唑、苯并三氮唑、2-羟基吡啶、吡啶、22联吡啶、1,10-菲啰啉、三乙烯四胺、二乙烯三胺中的一种或几种组分任意比混合;所述的整平剂为芳香烃类化合物,是萘、1-甲基萘、1,4-萘醌、1-萘酚中的一种或几种组分任意比混合;所述的络合剂是乙二胺四乙酸二钠、烟酸、氨基磺酸、焦磷酸钾中的一种或几种组分任意比混合。本发明的有益效果为:镀液稳定并且毒性低,分散能力好,所得镀层光亮细致,结合力优良,工艺采用环保的有机添加剂,无重金属、硫化物,镀层耐蚀性好。此外,本发明可直接用于黄铜、铜、化学镍等工件,无需预镀,结合力也能得到保证。

Description

一种无氰镀银溶液添加剂
技术领域
本发明属于电镀银技术领域,具体涉及一种无氰镀银溶液添加剂。
背景技术
银有着独特的银白色光泽,对有机酸和碱的化学性质比较稳定,且价格相比其他贵金属较便宜,作为装饰性镀层被广泛应用于餐具、首饰、艺术品的领域;镀银层优良的导电性和钎焊性,又被广泛应用于电气和电子工业中的电接触材料。
迄今为止,国内外的电镀银工艺多数还是采用氰系镀银,原因在于氰系镀银工艺镀液稳定性好,均镀能力和深度能力较好,镀层结晶细致。但是氰化物是剧毒物质,对现场操作人员的健康损害大,生产时要求具备良好的通风设备,同时排放的污水也不利于环境保护。
随着工业的发展,环境污染越来越严重,世界各国环境保护意识也不断加强以及相关政策的出台,氰系镀银已逐渐被淘汰,因此,寻找氰化物电镀的替代品,发展无氰镀银技术已成为一种必然的趋势。
发明内容
本发明的目的在于克服现有技术存在的不足,而提供一种无氰镀银溶液添加剂,一种用以取代氰化镀银的新型环保无氰镀银溶液的配方。
本发明的目的是通过如下技术方案来完成的。这种无氰镀银溶液添加剂,组分配比如下:光亮剂0.1~10g/l,整平剂5~10g/l,络合剂100~600g/l,其余为等离子水;所述的中光亮剂为含氮化合物,是三氮唑、苯并三氮唑、2-羟基吡啶、吡啶、22联吡啶、1,10-菲啰啉、三乙烯四胺、二乙烯三胺中的一种或几种组分任意比混合;所述的整平剂为芳香烃类化合物,是萘、1-甲基萘、1,4-萘醌、1-萘酚中的一种或几种组分任意比混合;所述的络合剂是乙二胺四乙酸二钠、烟酸、氨基磺酸、焦磷酸钾中的一种或几种组分任意比混合。
作为优选,组分配比如下:22联吡啶5g/l,二乙烯三胺0.2g/l,萘酚5g/l,乙二胺四乙酸二钠400g/l,用去离子水将上述组分配制成无氰镀银添加剂。
作为优选,组分配比如下:1,10-菲啰啉8g/l,1-甲基萘5g/l,烟酸200g/l,焦磷酸钾200g/l,用去离子水将上述组分配制成无氰镀银添加剂。
本发明所述的添加剂在无氰镀银溶液中的添加浓度为50~150ml/l,最佳浓度为80~120ml/l,基础镀液工艺信息如下:
硝酸银30~50g/l;
55二甲基海因80~160g/l;
无水碳酸钾40~120g/l;
硝酸钾10~40g/l;
电镀液使用氢氧化钾、氨水、硝酸、硫酸、盐酸调整溶液的PH,一般控制在8.6~11.5,工作温度控制在10~40℃。
本发明的有益效果为:镀液稳定并且毒性低,分散能力好,所得镀层光亮细致,结合力优良,工艺采用环保的有机添加剂,无重金属、硫化物,镀层耐蚀性好。此外,本发明可直接用于黄铜、铜、化学镍等工件,无需预镀,结合力也能得到保证。
具体实施方式
下面通过具体实施方式对本发明作进一步阐述,实施例将帮助更好地理解本发明,但本发明并不仅仅局限于下述实施例。
实施例1:一种无氰镀银溶液添加剂,其组分信息如下:
22联吡啶5g/l;
二乙烯三胺0.2g/l;
1-萘酚5g/l;
乙二胺四乙酸二钠400g/l;
用去离子水将上述组分配制成无氰镀银添加剂。
工作溶液工艺参数如下:
硝酸银40g/l
55二甲基海因120g/l
无水碳酸钾80g/l
硝酸钾25g/l
添加剂100ml/l
用硝酸或氢氧化钾调整溶液PH至10.5,温度为25℃。将铜件浸入电镀液中,以电流密度为0.6A/dm2对铜件进行电镀,电镀时间10分钟,所得银层光亮细致,与基材结合力好,200℃下烘烤20分钟不变色、不起皮
对比例1在不含添加剂的无氰镀银工作液中电镀,其他条件与例1保持一致,所得镀层粗糙,外观偏黄,结合力差。
实施例2:一种无氰镀银溶液添加剂,其组分信息如下:
1,10-菲啰啉8g/l
1-甲基萘5g/l
烟酸200g/l
焦磷酸钾200g/l
用去离子水将上述组分配制成无氰镀银添加剂。
工作溶液工艺参数如下:
硝酸银40g/l
55二甲基海因120g/l
无水碳酸钾80g/l
硝酸钾25g/l
添加剂100ml/l
用硝酸或氢氧化钾调整溶液PH至9.0,温度为25℃。将铜件浸入电镀液中,以电流密度为1.0A/dm2对铜件进行电镀,电镀时间10分钟,所得银层光亮细致,与基材结合力好,200℃下烘烤20分钟不变色、不起皮
对比例2在不含添加剂的无氰镀银工作液中电镀,其他条件与例2保持一致,所得镀层粗糙,外观偏黄,结合力差。
以上所述,仅是本发明的最佳实施例,并非对本发明作任何形式上的限制。任何熟悉本专业的技术人员,在不脱离本发明技术方案范围内,均能利用上述技术内容作出些许更改,得到等效的实施例,但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的简单修改、等同变化,均属于本发明技术方案的保护范围内。

Claims (3)

1.一种无氰镀银溶液添加剂,其特征在于:该无氰镀银溶液添加剂中组分配比如下:光亮剂0.1~10g/l,整平剂5~10g/l,络合剂100~600g/l,其余为等离子水;所述的中光亮剂为含氮化合物,是三氮唑、苯并三氮唑、2-羟基吡啶、吡啶、22联吡啶、1,10-菲啰啉、三乙烯四胺、二乙烯三胺中的一种或几种组分任意比混合;所述的整平剂为芳香烃类化合物,是萘、1-甲基萘、1,4-萘醌、1-萘酚中的一种或几种组分任意比混合;所述的络合剂是乙二胺四乙酸二钠、烟酸、氨基磺酸、焦磷酸钾中的一种或几种组分任意比混合。
2.根据权利要求1所述的无氰镀银溶液添加剂,其特征在于:组分配比如下:22联吡啶5g/l,二乙烯三胺0.2g/l,萘酚5g/l,乙二胺四乙酸二钠400g/l,用去离子水将上述组分配制成无氰镀银添加剂。
3.根据权利要求1所述的无氰镀银溶液添加剂,其特征在于:组分配比如下:1,10-菲啰啉8g/l,1-甲基萘5g/l,烟酸200g/l,焦磷酸钾200g/l,用去离子水将上述组分配制成无氰镀银添加剂。
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CN108517543A (zh) * 2018-04-04 2018-09-11 嘉兴学院 一种可动态监控铜离子污染含量的无氰镀银电镀液、简便快速检测方法以及定量检测方法
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Cited By (13)

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CN104746113A (zh) * 2015-04-27 2015-07-01 南京宁美表面技术有限公司 一种无氰电镀银溶液及电镀方法
CN107604393A (zh) * 2017-10-17 2018-01-19 广州睿邦新材料科技有限公司 一种无氰碱铜电镀组合物及其制备方法
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CN108517543A (zh) * 2018-04-04 2018-09-11 嘉兴学院 一种可动态监控铜离子污染含量的无氰镀银电镀液、简便快速检测方法以及定量检测方法
CN112805412A (zh) * 2018-10-11 2021-05-14 Abb电网瑞士股份公司 用于滑动接触器的银-石墨烯复合材料涂层及其电镀方法
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CN112805412B (zh) * 2018-10-11 2022-02-11 Abb电网瑞士股份公司 用于滑动接触器的银-石墨烯复合材料涂层及其电镀方法
CN109504990A (zh) * 2018-12-11 2019-03-22 湖北工程学院 一种近中性电刷镀镀银液及其制备工艺、使用方法
CN110219026A (zh) * 2019-07-19 2019-09-10 国网山东省电力公司电力科学研究院 一种多元配位体系的碱性无氰电刷镀溶液及其制备方法
CN110219026B (zh) * 2019-07-19 2020-10-30 国网山东省电力公司电力科学研究院 一种多元配位体系的碱性无氰电刷镀溶液及其制备方法
CN110528031A (zh) * 2019-08-06 2019-12-03 国网山东省电力公司电力科学研究院 基于edta多元配位体系的无氰电刷镀溶液及其制备方法
CN111235608B (zh) * 2020-03-10 2021-02-12 国网浙江省电力有限公司电力科学研究院 一种无氰银基复合镀液与银基复合镀层及其制备方法
CN111235608A (zh) * 2020-03-10 2020-06-05 国网浙江省电力有限公司电力科学研究院 一种无氰银基复合镀液与银基复合镀层及其制备方法

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