CN104878388A - Deplating solution for stripping nickel layer on copper layer, and preparation method and deplating method thereof - Google Patents
Deplating solution for stripping nickel layer on copper layer, and preparation method and deplating method thereof Download PDFInfo
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- CN104878388A CN104878388A CN201410071837.5A CN201410071837A CN104878388A CN 104878388 A CN104878388 A CN 104878388A CN 201410071837 A CN201410071837 A CN 201410071837A CN 104878388 A CN104878388 A CN 104878388A
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- decoating liquid
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Abstract
The invention provides a deplating solution for stripping a nickel layer on a copper layer, and a preparation method and a deplating method thereof. The deplating solution comprises a first corrosion inhibitor and an oxidant; and the first corrosion inhibitor is 2-methylmethanamide. The deplating solution can simultaneously guarantee nickel layer deplating and prevent corrosion of the copper layer.
Description
Technical field
The invention belongs to field of electroplating, particularly relating to a kind of decoating liquid for stripping layers of copper surface nickel dam and preparation method thereof and strip method.
Background technology
Nickel layer in layers of copper is often needed to play anticorrosion in modern electroplating technology, antirust, and plate the effect such as excessive coating of other metal.But sometimes, because in layers of copper Ni-Speed, nickel layer easily occurs quality problems, need strip nickel plating again again, but common strip agent often also can be returned layers of copper, causes product rejection.Existing layers of copper is moved back nickel technique and mainly contain electrolytic process, but electrolytic process comparatively bothers, particularly plastics part strip also needs special hanger, and bad the causing of some workpiece conduction cannot strip.And chemical strip method is commonly used potassium sulfocyanate and added m-nitrobenzene sodium sulfonate, but have the film that one deck is difficult to wash off on layers of copper surface, affect quality of coating and bonding force.And high temperature, volatility irritant gas is more, larger to human injury.The present invention not only temperature is lower, and volatility is few, environmental protection.Layers of copper quality and bonding force can not be affected simultaneously.
Publication number is the chemical decoating liquid that the Chinese patent of CN101775601A discloses a kind of brass surfaces tin-nickel coating that is applicable to decorporate, described decoating liquid is the aqueous solution, and wherein the content of each feed composition is: oxygenant 200-300ml/L, accelerator 60-100 ml/L, complexing agent 15-40g/L, inhibiter 0.1-0.4 g/L; 65-68% nitric acid selected by described oxygenant; 36-38% hydrochloric acid selected by described accelerator; Citric acid selected by described complexing agent; Benzotriazole selected by described inhibiter.The tin-nickel coating of brass surfaces although this patent can be decorporated, this patent is easy to erode to layer of brass, causes excessive corrosion.Chemistry layers of copper compare layer of brass, owing to being pure copper layer, easier than brass be subject to above-mentioned decoating liquid corrosion.Layer of brass is owing to being alloy layer, so resistance to corrosion is eager to excel a lot, so above-mentioned patent can not be used in chemical plating copper layer.
Summary of the invention
The present invention is the technical problem that the decoating liquid solving nickel dam in existing stripping layers of copper exists corrosion layers of copper, provide a kind of can not the decoating liquid corroding layers of copper and preparation method thereof and strip method.
The invention provides a kind of decoating liquid, described decoating liquid comprises the first inhibiter and oxygenant; Described first inhibiter is 2-methylformamide.
Present invention also offers the preparation method of decoating liquid described above, oxygenant, the first inhibiter formation mixed solution soluble in water are decoating liquid.
Present invention also offers a kind of strip method, described method comprise surface is coated with layers of copper successively, the base material of nickel dam is immersed in decoating liquid and carries out strip, returns the nickel dam on layers of copper surface; Wherein, described decoating liquid is decoating liquid of the present invention.
Containing 2-methylformamide in decoating liquid of the present invention, 2-methylformamide can form protective membrane on layers of copper surface, reduces decoating liquid to the erosion rate of layers of copper.Thus prevent the corrosion when strip to layers of copper.。
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of decoating liquid, described decoating liquid comprises the first inhibiter and oxygenant; Described first inhibiter is 2-methylformamide.
According to decoating liquid provided by the present invention, preferably, described decoating liquid also comprises the second inhibiter, and described second inhibiter is at least one in quadrol, trolamine, benzotriazole.Second inhibiter itself has certain corrosion inhibition, but is used alone the effect that can not reach the first inhibiter, only plays the effect of auxiliary raising effect, with the first inhibiter mating reaction, and protection layers of copper while not affecting etching nickel dam.According to decoating liquid provided by the present invention, preferably, the mass ratio of described first inhibiter and described second inhibiter is 1:1-20, more preferably 1:5-15.The words that first inhibiter mass ratio is too high can reduce nickel dam erosion rate, and mass ratio is too low can strengthen the danger of corrosion layers of copper.
According to decoating liquid provided by the present invention, preferably, described second inhibiter is the mixture of quadrol, trolamine and benzotriazole.These three kinds of material synergies can ensure that layers of copper is not corroded substantially, simultaneously less to the infection of nickel dam.
According to decoating liquid provided by the present invention, preferably, the mass ratio of described quadrol, trolamine and benzotriazole is 1:0.005-1:0.01-0.1, more preferably 1:0.01-0.8:0.03-0.08.
According to decoating liquid provided by the present invention, in order to ensure nickel dam etch-rate, preferably, the content of described quadrol is 100-200g/L, the content of described trolamine is 1-100g/L, the content of described benzotriazole is 1-20g/L, and the content of described 2-methylformamide is 10-100g/L, and the content of described oxygenant is 50-100g/L.
According to decoating liquid provided by the present invention, preferably, described oxygenant is at least one in m-nitrobenzene sodium sulfonate, nitric acid.
Present invention also offers the preparation method of decoating liquid described above, formation mixed solution soluble in water to the first inhibiter, the second inhibiter and oxygenant is decoating liquid.
Present invention also offers a kind of strip method, described method comprise surface is coated with layers of copper successively, the base material of nickel dam is immersed in decoating liquid and carries out strip, returns the nickel dam on layers of copper surface; Wherein, described decoating liquid is decoating liquid of the present invention.
According to strip method provided by the present invention, preferably, the temperature of described decoating liquid is 80-100 DEG C.
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
1, decoating liquid is prepared
Quadrol 170g/L, trolamine 70g/L, benzotriazole 7g/L, 2-methylformamide 70g/L and m-nitrobenzene sodium sulfonate 80g/L mixed dissolution are obtained decoating liquid A1.
2, strip gets ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A1 and carry out strip, the temperature of decoating liquid is 80 DEG C, and the strip time is 67s.Obtain strip part B1.
Embodiment 2
1, decoating liquid is prepared
Quadrol 120g/L, trolamine 10g/L, benzotriazole 3g/L, 2-methylformamide 30g/L and m-nitrobenzene sodium sulfonate 60g/L mixed dissolution are obtained decoating liquid A2.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A2 and carry out strip, the temperature of decoating liquid is 100 DEG C, and the strip time is 78s.Obtain strip part B2.
Embodiment 3
1, decoating liquid is prepared
Quadrol 100g/L, trolamine 1g/L, benzotriazole 1g/L, 2-methylformamide 10g/L and m-nitrobenzene sodium sulfonate 50 g/L mixed dissolution are obtained decoating liquid A3.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A3 and carry out strip, the temperature of decoating liquid is 80 DEG C, and the strip time is 127s.Obtain strip part B3.
Embodiment 4
1, decoating liquid is prepared
Quadrol 200g/L, trolamine 100g/L, benzotriazole 10g/L, 2-methylformamide 100 g/L and m-nitrobenzene sodium sulfonate 100g/L mixed dissolution are obtained decoating liquid A4.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A4 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 145s.Obtain strip part B4.
Embodiment 5
1, decoating liquid is prepared
Quadrol 150g/L, trolamine 50g/L, benzotriazole 5g/L, 2-methylformamide 50g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A5.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A5 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 59s.Obtain strip part B5.
Embodiment 6
1, decoating liquid is prepared
Quadrol 90g/L, trolamine 2.8g/L, benzotriazole 7.2g/L, 2-methylformamide 100g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A6.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A6 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 72s.Obtain strip part B6.
Embodiment 7
1, decoating liquid is prepared
Quadrol 150g/L, trolamine 85g/L, benzotriazole 15g/L, 2-methylformamide 50g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A7.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A7 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 62s.Obtain strip part B7.
Embodiment 8
1, decoating liquid is prepared
Quadrol 100g/L, trolamine 80g/L, benzotriazole 15g/L, 2-methylformamide 13g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A8.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A8 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 54s.Obtain strip part B8.
Embodiment 9
1, decoating liquid is prepared
Quadrol 200g/L, trolamine 1g/L, benzotriazole 19g/L, 2-methylformamide 11g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A9.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A9 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 60s.Obtain strip part B9.
Embodiment 10
1, decoating liquid is prepared
Trolamine 80g/L, 2-methylformamide 50g/L and m-nitrobenzene sodium sulfonate 90g/L mixed dissolution are obtained decoating liquid A10.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A10 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 57s.Obtain strip part B10.
Embodiment 11
1, decoating liquid is prepared
Quadrol 170g/L, 2-methylformamide 70g/L and m-nitrobenzene sodium sulfonate 80g/L mixed dissolution are obtained decoating liquid A11.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A11 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 63s.Obtain strip part B11.
Embodiment 12
1, decoating liquid is prepared
Benzotriazole 20g/L, 2-methylformamide 15g/L and m-nitrobenzene sodium sulfonate 80g/L mixed dissolution are obtained decoating liquid A12.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A12 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 63s.Obtain strip part B12.
Embodiment 13
1, decoating liquid is prepared
2-methylformamide 50 g/L and m-nitrobenzene sodium sulfonate 80 g/L mixed dissolution obtain decoating liquid A13.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid A13 and carry out strip, the temperature of decoating liquid is 90 DEG C, and the strip time is 63s.Obtain strip part B13.
Comparative example 1
1, decoating liquid is prepared
Quadrol 170g/L, trolamine 70g/L, benzotriazole 7g/L and m-nitrobenzene sodium sulfonate 80g/L mixed dissolution are obtained decoating liquid CA1.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid CA1 and carry out strip, the temperature of decoating liquid is 80 DEG C, and the strip time is 56s.Obtain strip part CB1.
Comparative example 2
1, decoating liquid is prepared
Employing publication number is the decoating liquid of embodiment 1 in the patent of CN101775601A is decoating liquid CA2.
2, strip
Get ABS plastic workpiece a slice layers of copper being coated with nickel dam, general 5 microns of nickel dam.Then put in decoating liquid CA2 and carry out strip, the temperature of decoating liquid is 80 DEG C, and the strip time is 36s.Obtain strip part CB2.
Testing method and result
Outward appearance: by clear for strip part B1-B13 and CB1-CB2 its nickel dam of rear observation whether completely stripping and layers of copper whether be corroded, the results are shown in Table 1.
Table 1
。
As can be seen from Table 1, after carrying out strip with decoating liquid of the present invention, the nickel dam of coating surface is stripped completely, but layers of copper is not corroded, and the decoating liquid of Comparison study example carries out strip, and layers of copper has corrosion.So stop layers of copper to be corroded while strip nickel dam can being ensured with decoating liquid of the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1., for stripping a decoating liquid for layers of copper surface nickel dam, it is characterized in that, described decoating liquid comprises the first inhibiter and oxygenant; Described first inhibiter is 2-methylformamide.
2. the decoating liquid for stripping layers of copper surface nickel dam according to claim 1, it is characterized in that, described decoating liquid also comprises the second inhibiter, and described second inhibiter is at least one in quadrol, trolamine, benzotriazole.
3. the decoating liquid for stripping layers of copper surface nickel dam according to claim 2, it is characterized in that, the mass ratio of described first inhibiter and described second inhibiter is 1:1-20.
4. the decoating liquid for stripping layers of copper surface nickel dam according to claim 2, it is characterized in that, described second inhibiter is the mixture of quadrol, trolamine and benzotriazole.
5. the decoating liquid for stripping layers of copper surface nickel dam according to claim 4, it is characterized in that, the mass ratio of described quadrol, trolamine and benzotriazole is 1:0.005-1:0.01-0.1.
6. the decoating liquid for stripping layers of copper surface nickel dam according to claim 5, it is characterized in that, the content of described quadrol is 100-200g/L, the content of described trolamine is 1-100g/L, the content of described benzotriazole is 1-20g/L, the content of described 2-methylformamide is 10-100g/L, and the content of described oxygenant is 50-100g/L.
7. decoating liquid according to claim 1, is characterized in that, described oxygenant is at least one in m-nitrobenzene sodium sulfonate, nitric acid.
8. a preparation method for the decoating liquid for stripping layers of copper surface nickel dam according to claim 1, is characterized in that, oxygenant, the first inhibiter formation mixed solution soluble in water are decoating liquid.
9. preparation method according to claim 8, is characterized in that, the method also comprises and add the second inhibiter in mixed solution.
10. strip a strip method for layers of copper surface nickel dam, it is characterized in that, described method comprise surface is coated with layers of copper successively, the base material of nickel dam is immersed in decoating liquid and carries out strip, returns the nickel dam on layers of copper surface; Wherein, described decoating liquid is the decoating liquid described in claim 1-7 any one.
The strip method of 11. stripping layers of copper surface according to claim 10 nickel dams, it is characterized in that, the temperature of described decoating liquid is 80-100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071837.5A CN104878388B (en) | 2014-02-28 | 2014-02-28 | It is a kind of to be used to strip decoating liquid of layers of copper surface nickel dam and preparation method thereof and strip method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410071837.5A CN104878388B (en) | 2014-02-28 | 2014-02-28 | It is a kind of to be used to strip decoating liquid of layers of copper surface nickel dam and preparation method thereof and strip method |
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| Publication Number | Publication Date |
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| CN104878388A true CN104878388A (en) | 2015-09-02 |
| CN104878388B CN104878388B (en) | 2018-03-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096894A (en) * | 2018-06-05 | 2018-12-28 | 电子科技大学中山学院 | High-temperature-resistant coating for surface of heating element of electric water heater and preparation method thereof |
| CN109778299A (en) * | 2019-02-22 | 2019-05-21 | 江门市瑞期精细化学工程有限公司 | A kind of release agent for electrolytic of iron-based material copper coating layer and preparation method thereof and stripping technology |
| CN110205631A (en) * | 2019-07-08 | 2019-09-06 | 范成勇 | Decoating liquid and strip method for ABS material stripping layers of copper surface nickel layer |
| CN112111741A (en) * | 2020-09-25 | 2020-12-22 | 深圳市祺鑫环保科技有限公司 | Tin stripping liquid copper protecting agent and tin stripping liquid |
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| US20080142478A1 (en) * | 2006-11-01 | 2008-06-19 | Microchem Corp. | Epoxy removal process for microformed electroplated devices |
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| US20080142478A1 (en) * | 2006-11-01 | 2008-06-19 | Microchem Corp. | Epoxy removal process for microformed electroplated devices |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096894A (en) * | 2018-06-05 | 2018-12-28 | 电子科技大学中山学院 | High-temperature-resistant coating for surface of heating element of electric water heater and preparation method thereof |
| CN109778299A (en) * | 2019-02-22 | 2019-05-21 | 江门市瑞期精细化学工程有限公司 | A kind of release agent for electrolytic of iron-based material copper coating layer and preparation method thereof and stripping technology |
| CN110205631A (en) * | 2019-07-08 | 2019-09-06 | 范成勇 | Decoating liquid and strip method for ABS material stripping layers of copper surface nickel layer |
| CN112111741A (en) * | 2020-09-25 | 2020-12-22 | 深圳市祺鑫环保科技有限公司 | Tin stripping liquid copper protecting agent and tin stripping liquid |
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| CN104878388B (en) | 2018-03-27 |
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