CN109338420A - A kind of neutral electrotinning electrolyte of environmental protection - Google Patents
A kind of neutral electrotinning electrolyte of environmental protection Download PDFInfo
- Publication number
- CN109338420A CN109338420A CN201811531523.3A CN201811531523A CN109338420A CN 109338420 A CN109338420 A CN 109338420A CN 201811531523 A CN201811531523 A CN 201811531523A CN 109338420 A CN109338420 A CN 109338420A
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- China
- Prior art keywords
- neutral
- electrotinning
- electrolyte
- environmental protection
- sodium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
- C25D3/32—Electroplating: Baths therefor from solutions of tin characterised by the organic bath constituents used
Abstract
The invention belongs to conductive material technical fields, it is related to a kind of neutral electrotinning electrolyte of environmental protection, it includes: that formula includes 10-25wt% carboxylate that it, which is formulated, 10-20wt% amino saccharide, 1-10wt% ammonium salt, the alcohols additive of 1-10wt%, 0.1-1wt% surfactant, the deionized water for pH to be adjusted to neutral ammonium hydroxide and surplus, the amino saccharide includes amine-galactose, D-MANNOSE amine, Glucosamine, one of 2- deoxidation -2- amino-xylose or a variety of.The neutral electrotinning electrolyte of environmental protection of the invention at room temperature, improves weldability, inoxidizability reduces the waste liquid discharging amount for producing same product.
Description
Technical field
The present invention relates to conductive material technical field, in particular to a kind of effect of removing photoresist is good and lesser to the attack of ground
Environmentally friendly neutrality electrotinning electrolyte.
Background technique
Because tin has many advantages, such as that anticorrosive, resistance to discoloration, nontoxic, easy soldering, soft, fusing point is low and ductility is good,
The surface of electronic component is plated in generally as coating material.Specific reaction principle is using tin as anode, and electronic component is made
For cathode, two electrochemical reactions occur in certain electrolyte solution:
Anode: Sn-2e-→Sn2+(course of dissolution of tin anode),
Cathode: Sn2++2e-(coating process is precipitated on chip prototype part) in → Sn.
That there are solderabilities is poor, welding hole area is big, service life is short, waste liquid is arranged for most of electroplating technology currently on the market
The problems such as high-volume big or foam is more.
It is therefore desirable to provide the new electrotinning electrolyte of one kind to solve problem above.
Summary of the invention
The main purpose of the present invention is to provide a kind of neutral electrotinning electrolyte of environmental protection, can be avoided in electrotinning process
The middle welding performance for generating a large amount of foams influence tin layers.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of neutral electrotinning electrolyte of environmental protection, formula packet
Include: 10-25wt% carboxylate, 10-20wt% amino saccharide, 1-10wt% ammonium salt, 1-10wt% alcohols additive,
For pH to be adjusted to the deionized water of neutral ammonium hydroxide and surplus, the amino saccharide includes amine-galactose,
D-MANNOSE amine, Glucosamine, one of 2- deoxidation -2- amino-xylose or a variety of.
Specifically, the carboxylate include 2,3- dyhydrobutanedioic acid sodium, 2- hydroxy propane -1,2,3- sodium tricarboxylate, five
Hydroxyl sour sodium, sodium glucoheptonate, sodium alginate, sodium ammonium triacetate, one of disodium ethylene diamine tetraacetate.
Specifically, the alcohols additive includes ethylene glycol, glycerol pentaerythrite, polyethylene glycol, polyglycerol, dehydration mountain
One of pears alcohol.
Specifically, the surfactant includes polysiloxanes such as dimethyl silicone polymer, polyethylene glycol monomethyl ether, ring
Oxidative ethane/epoxy propane copolymer, alkyl polyoxyethylene ether, one of alkoxy acetylenic glycols.
By adopting the above technical scheme, the beneficial effect of technical solution of the present invention is:
The neutral electrotinning electrolyte of environmental protection of the invention at room temperature, improves weldability, and inoxidizability is reduced
The waste liquid discharging amount of the same product of production.
Specific embodiment
Invention is further described in detail combined with specific embodiments below.
A kind of neutral electrotinning electrolyte of environmental protection, formula include: that formula includes 10-25wt% carboxylate, 10-20wt%
Amino saccharide, 1-10wt% ammonium salt, 0.1-1wt% surfactant, are used to pH the alcohols additive of 1-10wt%
It is adjusted to the deionized water of neutral ammonium hydroxide and surplus, the amino saccharide includes amine-galactose, D-MANNOSE
Amine, Glucosamine, one of 2- deoxidation -2- amino-xylose or a variety of.
Examples 1 to 7:
Deionized water, carboxylate, amino saccharide, ammonium salt, additive, table are sequentially added according to the ratio according to table 1
Face activating agent, after mixing evenly with ammonium hydroxide tune PH to neutrality, obtain environmentally friendly neutral electrotinning electrolyte.
Table 1:
Note: it is the deionized water containing ammonia that the part less than 100wt% is always matched in table 1.
Using the existing neutral electrotinning electrolyte bought on the market as reference examples, in environmental protection made from Examples 1 to 7
Property electrotinning electrolyte compare, electrotinning is carried out to copper sheet and resistance at 22~25 DEG C of room temperature, obtains tin plating copper sheet, is surveyed
Method for testing is as follows:
1. welding hole area: carrying out soldering test after resistance plating, measurement welding hole area accounts for the percentage of the gross area
Than；
2. inoxidizability: adding the hydrogen peroxide of 5ml/L in the plating solution, place observation plating solution cloudiness
3. maximum current: copper sheet burns electric current when plating；
4. discharge amount: the amount of the spilling part solution after liquid medicine is added in electroplating process (accounts for the body of slot allocation liquid medicine total volume
Product ratio).
As a result such as table 2:
Table 2:
| Weld hole area | Inoxidizability | Maximum current | Discharge amount | |
| Embodiment 1 | 7% | Occur after 7 days muddy | 1.5ASD | 3% |
| Embodiment 2 | 15% | Occur after 5 days muddy | 1.2ASD | 5% |
| Embodiment 3 | 8% | Occur after 7 days muddy | 1.3ASD | 4% |
| Embodiment 4 | 10% | Occur after 7 days muddy | 1.5ASD | 5% |
| Embodiment 5 | 13% | Occur after 7 days muddy | 1.1ASD | 3% |
| Embodiment 6 | 7% | Occur after 7 days muddy | 1.4ASD | 7% |
| Embodiment 7 | 8% | Occur after 5 days muddy | 1.5ASD | 6% |
| Reference examples | 34% | Occur after 1 day muddy | 0.5ASD | 10% |
The test result shown in the table 2 can be seen that the neutral electrotinning electrolyte of environmental protection of the invention at room temperature,
Weldability is improved, inoxidizability reduces the waste liquid discharging amount for producing same product.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (4)
1. a kind of neutral electrotinning electrolyte of environmental protection, it is characterised in that: formula includes 10-25wt% carboxylate, 10-20wt% ammonia
Base saccharide compound, 1-10wt% ammonium salt, 0.1-1wt% surfactant, are used to pH tune the alcohols additive of 1-10wt%
Section is the deionized water of neutral ammonium hydroxide and surplus, and the amino saccharide includes amine-galactose, D-MANNOSE amine,
Glucosamine, one of 2- deoxidation -2- amino-xylose or a variety of.
2. the neutral electrotinning electrolyte of environmental protection according to claim 1, it is characterised in that: the carboxylate includes 2,3- bis-
Hydroxysuccinic acid sodium, 2- hydroxy propane -1,2,3- sodium tricarboxylate, hexonic acid sodium, sodium glucoheptonate, sodium alginate, ammonia
Triacetic acid sodium, one of disodium ethylene diamine tetraacetate.
3. the neutral electrotinning electrolyte of environmental protection according to claim 1, it is characterised in that: the alcohols additive includes second
Glycol, glycerol pentaerythrite, polyethylene glycol, polyglycerol, one of anhydrous sorbitol.
4. the neutral electrotinning electrolyte of environmental protection according to claim 1, it is characterised in that: the surfactant includes poly-
Siloxanes such as dimethyl silicone polymer, polyethylene glycol monomethyl ether, ethylene oxide/propylene oxide copolymer, alkyl polyoxyethylene
Ether, one of alkoxy acetylenic glycols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531523.3A CN109338420A (en) | 2018-12-14 | 2018-12-14 | A kind of neutral electrotinning electrolyte of environmental protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531523.3A CN109338420A (en) | 2018-12-14 | 2018-12-14 | A kind of neutral electrotinning electrolyte of environmental protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109338420A true CN109338420A (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811531523.3A Pending CN109338420A (en) | 2018-12-14 | 2018-12-14 | A kind of neutral electrotinning electrolyte of environmental protection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106535A (en) * | 2019-06-10 | 2019-08-09 | 广东比格莱科技有限公司 | A kind of tin plating additive of neutrality |
| CN110791784A (en) * | 2019-12-19 | 2020-02-14 | 奎克化学（中国）有限公司 | Additive for tin electroplating process by using methanesulfonic acid method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080513A (en) * | 2004-11-29 | 2007-11-28 | 技术公司 | Near neutral pH tin electroplating solution |
| CN101298688A (en) * | 2007-04-24 | 2008-11-05 | 罗门哈斯电子材料有限公司 | Tin or tin alloy electric plating liquid |
| CN101624714A (en) * | 2009-08-18 | 2010-01-13 | 杜强 | Cu-Sn-Zn plating solution containing organic addition agent and electroplating technique utilizing same |
| CN102560577A (en) * | 2012-03-08 | 2012-07-11 | 杜强 | Nickel-free black tin cobalt alloy plating solution and electroplating technology by using same |
| CN103757672A (en) * | 2014-01-20 | 2014-04-30 | 广州市海科顺表面处理有限公司 | Zinc-tin alloy electroplating method |
| CN106299278A (en) * | 2016-08-31 | 2017-01-04 | 青岛文创科技有限公司 | A kind of ferrum magnesium ashbury metal lithium ion battery negative material |
| CN108070885A (en) * | 2016-11-11 | 2018-05-25 | 罗门哈斯电子材料有限责任公司 | Use the barrel plating of neutral tin plating electrolyte or high speed rotating electroplating |
-
2018
- 2018-12-14 CN CN201811531523.3A patent/CN109338420A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080513A (en) * | 2004-11-29 | 2007-11-28 | 技术公司 | Near neutral pH tin electroplating solution |
| CN101298688A (en) * | 2007-04-24 | 2008-11-05 | 罗门哈斯电子材料有限公司 | Tin or tin alloy electric plating liquid |
| CN101624714A (en) * | 2009-08-18 | 2010-01-13 | 杜强 | Cu-Sn-Zn plating solution containing organic addition agent and electroplating technique utilizing same |
| CN102560577A (en) * | 2012-03-08 | 2012-07-11 | 杜强 | Nickel-free black tin cobalt alloy plating solution and electroplating technology by using same |
| CN103757672A (en) * | 2014-01-20 | 2014-04-30 | 广州市海科顺表面处理有限公司 | Zinc-tin alloy electroplating method |
| CN106299278A (en) * | 2016-08-31 | 2017-01-04 | 青岛文创科技有限公司 | A kind of ferrum magnesium ashbury metal lithium ion battery negative material |
| CN108070885A (en) * | 2016-11-11 | 2018-05-25 | 罗门哈斯电子材料有限责任公司 | Use the barrel plating of neutral tin plating electrolyte or high speed rotating electroplating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106535A (en) * | 2019-06-10 | 2019-08-09 | 广东比格莱科技有限公司 | A kind of tin plating additive of neutrality |
| CN110791784A (en) * | 2019-12-19 | 2020-02-14 | 奎克化学（中国）有限公司 | Additive for tin electroplating process by using methanesulfonic acid method |
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Application publication date: 20190215 |