CN109576686A - A kind of additive enhancing chemical nickel-plating solution stability - Google Patents
A kind of additive enhancing chemical nickel-plating solution stability Download PDFInfo
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- CN109576686A CN109576686A CN201910026359.9A CN201910026359A CN109576686A CN 109576686 A CN109576686 A CN 109576686A CN 201910026359 A CN201910026359 A CN 201910026359A CN 109576686 A CN109576686 A CN 109576686A
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- Prior art keywords
- parts
- plating solution
- additive
- solution
- nickel
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
Abstract
The invention discloses a kind of additives for enhancing chemical nickel-plating solution stability, according to parts by weight, including following components: 15-30 parts of EDETATE SODIUM, 5-15 parts of potassium tripolyphosphate, 10-25 parts of cysteine hydrochloride, 0.1-2 parts of sodium hypophosphite, 0.5-2.5 parts of lactic acid, 1-5 parts of sodium gluconate, 0.01-0.5 parts of rare-earth salts, 300-550 parts of water.The rare-earth salts is selected from least one of lanthanum, cerium or salt of praseodymium；The salt of the lanthanum, cerium or praseodymium is the chloride or bromide of lanthanum, cerium or praseodymium.Compared with the existing technology, product of the present invention either can play stable effect to acid, neutral or alkalinity chemical nickel-plating solution；So that chemical nickel-plating solution can keep good stability within the scope of 5-80 DEG C, there is not sedimentation phenomenon, nickel plating constant rate is maintained in Ni-Speed.In addition, the leveling to plating piece, brightness and salt fog ability are also promoted.
Description
Technical field
The invention belongs to field of electroplating, in particular to a kind of additive for enhancing chemical nickel-plating solution stability.
Background technique
Chemical plating is also known as electroless plating, is referred to as self-catalysis plating.Detailed process refers to: under certain condition,
Metal ion in aqueous solution is reduced agent reduction, and the process being deposited on solid matrix surface.Make metal or other materials
The surface attachment layer of metal film of material product prevents corrosion of metal to play, and improves wearability, electric conductivity, reflective and increases
The effects of into beauty, it is applied to every field.In the prior art in metal or other materials article surface nickel plating using very
Extensively.However the storage of nickel plating solution or in Ni-Speed since the larger fluctuation of temperature can make the performance of nickel plating solution not
Stablize, such as occur some active particles in nickel plating solution, makes plating solution that fierce self-catalyzed reaction occur, generate a large amount of Ni-P
Black powder causes nickel plating solution to be decomposed, or even sedimentation phenomenon occurs, or the nickel ion in nickel plating solution is sent out
The rate that raw reduction reaction forms simple substance is unstable, so that quality of coating is poor.In addition, in nonexpondable ageing plating solution
In, the accumulation of phosphorous acid will increase, if stabilizer is inadequate, bath stability can sharply decline, enhanced chemical nickel plating solution
Stabilizer can greatly improve bath stability, to increase the service life of plating solution, reduce the discharge of waste liquid, be conducive to ring
Border protection.Moreover, product on the market generally plays certain stabilization to acid nickel plating solution, to neutral nickel plating solution
Or alkalinity nickel plating solution stability is general, enhanced stabilizer all there is preferable stablize to imitate neutral or alkaline nickel plating solution
Fruit.
Therefore it provides one kind protect acid, neutral or alkaline electroless plating nickel solution can in wide temperature range all
Good stability is held, is not settled, the nickel-plating additive for being also able to maintain nickel plating constant rate in Ni-Speed extremely has
It is necessary.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of additive for enhancing chemical nickel-plating solution stability.This hair
The bright product can keep nickel plating solution to stablize, not settle, plating is able to maintain in Ni-Speed over a wide temperature range
Nickel constant rate, so that the coating of product is wear-resisting, brightness is high, salt fog resistance ability is strong.
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
Preferably, a kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
Preferably, the rare-earth salts is selected from least one of lanthanum, cerium or salt of praseodymium；It is further preferred that the lanthanum, cerium
Or the salt of praseodymium is the chloride or bromide of lanthanum, cerium or praseodymium.
Preferably, the sodium gluconate and rare-earth salts are 10-20:1 according to weight ratio.
Preferably, the water is deionized water.
It is further preferred that a kind of additive for enhancing chemical nickel-plating solution stability, according to parts by weight, including it is following
Component:
Since chemical plating is the plating solution having an effect by self-catalysis, so if preparation order is improper, it is very easy to make
Solution self-catalyzed reaction is failed during at preparation.
The present invention also provides a kind of preparation methods of additive for enhancing chemical nickel-plating solution stability, including following step
It is rapid:
(1) each component is weighed by formula ratio, sodium gluconate, rare-earth salts and 100-150 parts of water is added in beaker, is added
Thermal agitation, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 10-30 minutes, made
Obtain additive of the present invention.
Heating in step (1) is carried out with the mode of heating water bath, and 35-45 DEG C (preferably 39-41 DEG C) is heated to.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.1 part/minute.
The present invention is molten in nickel plating to stablize by EDETATE SODIUM (disodium ethylene diamine tetraacetate), sodium gluconate and rare-earth salts
Liquid, so that nickel plating solution can keep good stability within the scope of 5-80 DEG C, while but also either acid, neutral go back
It is that alkaline nickel plating solution is also able to maintain good stability, sedimentation phenomenon will not occurs.Meanwhile in Ni-Speed, EDTA bis-
Sodium, sodium gluconate and rare-earth salts also function to important function to maintenance nickel plating constant rate.
Compared with the existing technology, beneficial effects of the present invention are as follows:
(1) product of the present invention either can play stable effect to acid, neutral or alkaline nickel plating solution.
(2) product of the present invention may make nickel plating solution that can keep good stability within the scope of 5-80 DEG C, no
Change colour, sedimentation phenomenon also do not occur, nickel plating constant rate is maintained in Ni-Speed.
(3) product of the present invention greatly improves bath stability, to increase the service life of plating solution, reduces waste liquid
Discharge, be conducive to environmental protection.
Specific embodiment
In order to allow those skilled in the art that technical solution of the present invention is more clearly understood, now enumerate following embodiment into
Row explanation.It is to be noted that following embodiment does not constitute a limitation effect to scope of the present invention.
Embodiment 1
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
The rare-earth salts is praseodymium chloride.
A kind of preparation method for the additive enhancing chemical nickel-plating solution stability, comprising the following steps:
(1) each component is weighed by formula ratio, sodium gluconate, praseodymium chloride and 150 parts of water is added in beaker, water-bath is used
The mode of heating is heated to 35 DEG C of stirrings, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 10 minutes, be made
Additive of the present invention.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.1 part/minute.
Embodiment 2
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
The rare-earth salts is lanthanum chloride.
A kind of preparation method for the additive enhancing chemical nickel-plating solution stability, comprising the following steps:
(1) each component is weighed by formula ratio, sodium gluconate, lanthanum chloride and 140 parts of water is added in beaker, water-bath is used
The mode of heating is heated to 40 DEG C of stirrings, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 15 minutes, be made
Additive of the present invention.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.1 part/minute.
Embodiment 3
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
A kind of preparation method for the additive enhancing chemical nickel-plating solution stability, comprising the following steps:
(1) each component is weighed by formula ratio, sodium gluconate, lanthanum chloride and 150 parts of water is added in beaker, water-bath is used
The mode of heating is heated to 40 DEG C of stirrings, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 20 minutes, be made
Additive of the present invention.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.1 part/minute.
Embodiment 4
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
The rare-earth salts is 0.2 part and 0.3 part of praseodymium chloride of bromination cerium.
A kind of preparation method for the additive enhancing chemical nickel-plating solution stability, comprising the following steps:
(1) each component is weighed by formula ratio, beaker is added in sodium gluconate, bromination cerium, praseodymium chloride and 130 parts of water
In, 42 DEG C are heated to the mode of heating water bath, is stirred, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 15 minutes, be made
Additive of the present invention.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.15 part/minute.
Embodiment 5
A kind of additive enhancing chemical nickel-plating solution stability, according to parts by weight, including following components:
The rare-earth salts is praseodymium chloride.
A kind of preparation method for the additive enhancing chemical nickel-plating solution stability, comprising the following steps:
(1) each component is weighed by formula ratio, sodium gluconate, praseodymium chloride and 150 parts of water is added in beaker, water-bath is used
The mode of heating is heated to 45 DEG C of stirrings, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, is made
Solution B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 20 minutes, be made
Additive of the present invention.
Lactic acid is added in step (3) and sodium hypophosphite is added dropwise according to the speed of 0.2 part/minute.
Comparative example 1
It is compared with embodiment 2, rare-earth salts and sodium gluconate, remaining preparation process and embodiment 2 is not contained in comparative example 1
It is identical.
Comparative example 2
It is compared with embodiment 3, lactic acid is not contained in comparative example 2, remaining preparation process is same as Example 3.
Comparative example 3
It is compared with embodiment 3, lactic acid and sodium hypophosphite are added dropwise according to the speed of 0.3 part/minute in comparative example 3.
Product measure of merit
By 1-5 of the embodiment of the present invention, comparative example 1-3 prepare product and commercially available similar-type products, according to additive with
The volume ratio of nickel plating solution is the ratio of 1:150, is added to commercially available acid chemical plating nickel solution (pH=2), neutral chemical plating
In nickel solution (pH=7) and alkaline electroless plating nickel solution (pH=12), respectively at a temperature of 5 DEG C, 20 DEG C and 80 DEG C three kinds,
12 hours, 1 month time point test the stability of corresponding nickel plating solution, see whether nickel plating solution discoloration occur or occur
Sedimentation phenomenon, the results are shown in Table 1.
Table 1:
As can be seen from Table 1, additive is measured by observing discoloration and the sedimentation situation of nickel plating solution
It can be seen that stability contrast example of the product to nickel plating solution of 1-5 of embodiment of the present invention preparation to the stability of nickel plating solution
1-3 and commercially available similar-type products will be got well, and can guarantee the stability of alkaline nickel plating solution for a long time especially at 80 DEG C,
Do not occur changing colour and sedimentation phenomenon.
In addition, the product and commercially available similar-type products that are prepared with the embodiment of the present invention 3 are added in neutral nickel plating solution,
With nickel-plating technology commonly used in the art, show to carry out nickel plating in common metal, observes after nickel plating the brightness of product surface and resistance to
Salt fog ability, the results are shown in Table 2.Product brightness is divided into 4 grades, divides according to range estimation experience rating method brightness
(according to Zhang Jingshuan, Shi Jinsheng, stone is of heap of stone to wait electroplating solution and coating performance to test the Beijing [M]: chemical industry goes out reference standard grade
Version society, 2003.8.): 1 grade of (bright in mirror surface) coating is as bright as a sixpence, can clearly differentiate the face and eyebrow of people；2 grades (light) platings
Layer surface is bright, it is seen that people's face and eyebrow, but eyebrow part is not clear enough；3 grades of (half is bright) coating surface lights are poor,
But it can find out the face profile of people, eyebrow obscure portions；4 grades of (no light) coating are substantially matt, do not see the face of people
Face profile.According to GB/T2423.18-2000 standard, salt fog resistance is carried out to nickel plating product using salt fog machine FR-1202-90
It can test, be resistant to the time of salt fog to measure the ability of product salt spray resistance, acquired results are as shown in table 2.
Table 2:
| Embodiment 3 | Commercially available similar-type products | |
| Brightness | 1 grade | 3 grades |
| Salt-fog resistant time (h) | 55 | 25 |
From table 2 it can be seen that product prepared by the embodiment of the present invention 3 is added in neutral nickel plating solution, can significantly improve
The stability of Ni-Speed maintains nickel plating constant rate in Ni-Speed, so that nickel plating product surface brightness is high, due to
The addition of rare earth, salt spray resistance ability are also strong.
In conclusion product of the present invention is added in chemical nickel-plating solution the stability that can improve nickel plating solution, from
And improve the brightness and flatness of nickel plating product.In addition, the salt fog ability to plating piece is also promoted.
Claims (10)
1. a kind of additive for enhancing chemical nickel-plating solution stability, which is characterized in that according to parts by weight, including with the following group
Point:
2. additive according to claim 1, which is characterized in that according to parts by weight, including following components:
3. additive according to claim 1 or 2, which is characterized in that the sodium gluconate and rare-earth salts are according to weight
Than for 10-20:1.
4. additive according to claim 1 or 2, which is characterized in that in salt of the rare-earth salts selected from lanthanum, cerium or praseodymium
It is at least one.
5. additive according to claim 4, which is characterized in that the salt of the lanthanum, cerium or praseodymium is the chlorination of lanthanum, cerium or praseodymium
Object or bromide.
6. additive according to claim 5, which is characterized in that according to parts by weight, including following components:
7. a kind of preparation method of additive according to claim 1-6, which is characterized in that including following step
It is rapid:
(1) each component is weighed by formula ratio, sodium gluconate, rare-earth salts and 100-150 parts of water is added in beaker, heating is stirred
It mixes, obtained solution A；
(2) EDETATE SODIUM, potassium tripolyphosphate, cysteine hydrochloride and excess water are mixed, is stirred evenly, obtained solution
B；
(3) solution A and solution B are mixed, lactic acid and sodium hypophosphite is then added, is stirred for 10-30 minutes, this is made
Invent the additive.
8. preparation method according to claim 7, which is characterized in that the heating in step (1) is the side with heating water bath
Formula carries out.
9. preparation method according to claim 8, which is characterized in that the heating water bath is heated to 35-45 DEG C.
10. preparation method according to claim 9, it is characterised in that lactic acid is added in step (3) and sodium hypophosphite is pressed
It is added dropwise according to the speed of 0.1-0.2 parts/minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910026359.9A CN109576686A (en) | 2019-01-11 | 2019-01-11 | A kind of additive enhancing chemical nickel-plating solution stability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910026359.9A CN109576686A (en) | 2019-01-11 | 2019-01-11 | A kind of additive enhancing chemical nickel-plating solution stability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055522A (en) * | 2019-04-28 | 2019-07-26 | 祝亚琴 | A kind of chemical nickel plating solution additive |
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