CN104294326A - 一种在印制板上镀锡液的配方及方法 - Google Patents

一种在印制板上镀锡液的配方及方法 Download PDF

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CN104294326A
CN104294326A CN201410484268.7A CN201410484268A CN104294326A CN 104294326 A CN104294326 A CN 104294326A CN 201410484268 A CN201410484268 A CN 201410484268A CN 104294326 A CN104294326 A CN 104294326A
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boric acid
plating
tin
tin plating
printed board
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杨彦涛
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Wuxi Changhui Machinery & Electronics Technology Co Ltd
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Wuxi Changhui Machinery & Electronics Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/30Electroplating: Baths therefor from solutions of tin
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00Electroplating characterised by the article coated

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

本发明公开了一种在印制板上镀锡液的配方及方法,包括以下成分按重量配比,硫酸亚锡40-55g/L,硫酸60-120g/L,硼酸23-35g/L,B-萘酚0.5-1g/L,明胶1-3g/L,稳定剂28-30mg/L;电镀步骤:1)清洗;2)依次加入计量的硫酸、硼酸、硫酸亚锡,进行搅拌使其混合均匀;3)加入稳定剂;4)电镀;5)水洗烘干;本发明提高了镀锡的稳定性,降低了成本,且对人体无害,操作简单。

Description

一种在印制板上镀锡液的配方及方法
技术领域
本发明属于金属表面电镀技术领域,具体涉及一种在印制板上镀锡液的配方及方法。
背景技术
锡镀层作为印制板碱性蚀刻保护层,具有很好的抗蚀保护能力,并且都系层比锡铅层退镀容易,因此近年在印制板凸形电镀锡工艺中应用普遍,对于印制板逐渐趋向小型化、轻薄化,镀锡可以控制印制板的厚度,但是目前镀锡液稳定性差结晶不均匀。
发明内容
发明目的:本发明解决了上述问题,提供了一种在印制板上镀锡液的配方及方法,使镀锡液性能稳定,操作简便。
技术方案:一种在印制板上镀锡液的配方,包括以下成分按重量配比,硫酸亚锡40-55g/L,硫酸60-120g/L,硼酸23-35g/L,B-萘酚0.5-1g/L,明胶1-3g/L,稳定剂28-30mg/L。
2、一种在印制板上镀锡液的方法,包括以下步骤:
(1)将镀槽浸入硼酸3-4小时,洗净镀槽后在镀槽内注入纯水及硼酸;
(2)再依次加入计量的硫酸、硼酸、硫酸亚锡,进行搅拌使其混合均匀;
(3)用活性炭滤芯过滤2-4小时,加入稳定剂;
(4)电镀,镀液温度为16-30℃,阴极电流密度为0.5-1.5A/dm2,电解处理1小时;
(5)水洗烘干。
步骤(1)中所述在镀槽内加入的硼酸事先在热纯水中溶解过。
有益效果:本发明与现有技术相比,其优点在于在提高了镀锡的稳定性,降低了成本,且对人体无害,操作简单。
具体实施方式
下面结合具体实施方式,进一步阐明本发明。
实施例1
一种在印制板上镀锡液的配方及方法,包括以下成分按重量配比,硫酸亚锡40-55g/L,硫酸60-120g/L,硼酸23-35g/L,B-萘酚0.5-1g/L,明胶1-3g/L,稳定剂28-30mg/L。
先将镀槽、过滤泵、阳极袋等器具清洗干净,再用5%-10%硼酸溶液浸3-4小时,再用水冲洗干净,往镀槽中注入1/3溶剂的纯水,并加入事先在热纯水中溶解的硼酸,然后在不断搅拌下依次缓缓加入计量的硫酸、硼酸、硫酸亚锡,搅拌30分钟使其混合均匀,待溶液温度降至室温后,缓缓加入稳定剂28-30mg/L,调整液位,通阴极电流0.5-1.5A/dm2电解处理1小时,水洗烘干。
实施例2
其余与实施例1相同,不同之处在于镀锡液配置完成后若溶液有沉淀物,用活性炭滤芯过滤2-4小时。
本发明提高了镀锡的稳定性,降低了成本,且对人体无害,操作简单。

Claims (3)

1.一种在印制板上镀锡液的配方,其特征在于:包括以下成分按重量配比,硫酸亚锡40-55g/L,硫酸60-120g/L,硼酸23-35g/L,B-萘酚0.5-1g/L,明胶1-3g/L,稳定剂28-30mg/L。
2.一种在印制板上镀锡液的方法,包括以下步骤:
(1)将镀槽浸入硼酸3-4小时,洗净镀槽后在镀槽内注入纯水及硼酸;
(2)再依次加入计量的硫酸、硼酸、硫酸亚锡,进行搅拌使其混合均匀;
(3)用活性炭滤芯过滤2-4小时,加入稳定剂;
(4)电镀,镀液温度为16-30℃,阴极电流密度为0.5-1.5A/dm2,电解处理1小时;
(5)水洗烘干。
3.根据权利要求2所述的一种在印制板上镀锡液的方法,其特征在于:步骤(1)中所述在镀槽内加入的硼酸事先在热纯水中溶解过。
CN201410484268.7A 2014-09-19 2014-09-19 一种在印制板上镀锡液的配方及方法 Pending CN104294326A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107675209A (zh) * 2017-10-18 2018-02-09 江西理工大学 一种绿色环保锡电解精炼电解液
CN111188069A (zh) * 2019-12-31 2020-05-22 大连长丰实业总公司 一种镀锡铋合金溶液及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616292A (en) * 1969-03-06 1971-10-26 Vulcan Materials Co Alumated stannous sulfate solutions their preparation and their use in plating on conductive surfaces particularly on aluminum
JPS57140882A (en) * 1981-02-24 1982-08-31 Tokyo Mekki:Kk Bright electroplating method for tin or solder
CN1133903A (zh) * 1995-04-20 1996-10-23 周荣壁 铜线镀锡工艺
CN1326015A (zh) * 2000-03-31 2001-12-12 希普雷公司 锡电解质
CN1390985A (zh) * 2001-05-24 2003-01-15 希普列公司 镀锡用组合物及镀锡方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616292A (en) * 1969-03-06 1971-10-26 Vulcan Materials Co Alumated stannous sulfate solutions their preparation and their use in plating on conductive surfaces particularly on aluminum
JPS57140882A (en) * 1981-02-24 1982-08-31 Tokyo Mekki:Kk Bright electroplating method for tin or solder
CN1133903A (zh) * 1995-04-20 1996-10-23 周荣壁 铜线镀锡工艺
CN1326015A (zh) * 2000-03-31 2001-12-12 希普雷公司 锡电解质
CN1390985A (zh) * 2001-05-24 2003-01-15 希普列公司 镀锡用组合物及镀锡方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
储荣邦等: "酸性硫酸盐镀锡工艺", 《电镀与涂饰》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107675209A (zh) * 2017-10-18 2018-02-09 江西理工大学 一种绿色环保锡电解精炼电解液
CN111188069A (zh) * 2019-12-31 2020-05-22 大连长丰实业总公司 一种镀锡铋合金溶液及其制备方法

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Application publication date: 20150121