CN110408967A - A kind of alkaline non-cyanogen galvanization electroplate liquid thickening zinc coating thickness and preparation method - Google Patents
A kind of alkaline non-cyanogen galvanization electroplate liquid thickening zinc coating thickness and preparation method Download PDFInfo
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- CN110408967A CN110408967A CN201910789176.2A CN201910789176A CN110408967A CN 110408967 A CN110408967 A CN 110408967A CN 201910789176 A CN201910789176 A CN 201910789176A CN 110408967 A CN110408967 A CN 110408967A
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- 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
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
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Abstract
The present invention provides one kind can thicken the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness, including following components: the zinc oxide of 8-16g/L, the sodium hydroxide of 90-150g/L, the triethylene tetramine of 10-16g/L, the hydroxypropyl imidazoles of 1-10g/L, 1-5g/L [BMIM] PF6, the methenamine of 2-4g/L, the brightener of 1-5g/L, surplus be water.The excellent zinc coat of thickness, deposition velocity can be prepared fastly by the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the application and the thicker zinc coat is not in brittleness.Present invention also provides the preparation methods that one kind can thicken the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness.
Description
Technical field
The present invention relates to galvanizing technique fields, and in particular to one kind can thicken the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness
And preparation method.
Background technique
Constantly develop to low cyanogen, micro- cyanogen as cyanide is zinc-plated, the alkali plating solution for carrying out environment-friendly non-cyanogen must as what is developed
Right trend.Alkaline non-cyanogen galvanization liquid includes zinc oxide, sodium hydroxide and additive.Additive is the key that determine quality of coating
Factor.Crystal grain, the depth capability for improving coating and dispersibility and Surface flat can be refined, and improves brightness.Different additions
The role of agent in the plating solution is different.There is no the plating solution of additive only to obtain spongiform coating, without industrial application value.
Currently, the country is generally cooperated using DE and aldehydes or DPE-III and triethanolamine in alkaline non-cyanogen galvanization liquid
Additive and the compound that is reacted with propylene oxide of organic amine, defect is that coating is very thin.And the main purpose of zinc coat is to protect
Shield effect, therefore, thicker zinc coat are the key factors for determining that galvanizing quality is excellent.
Based on the problem present on, it is necessary to develop a kind of alkaline non-cyanogen galvanization electroplate liquid that can thicken zinc coating thickness and
Preparation method solves existing defect.
Summary of the invention
First purpose of the invention is to provide a kind of alkaline non-cyanogen galvanization electroplate liquid that can thicken zinc coating thickness, deposition velocity
Thickness that is fast and can effectively increasing zinc coat.
It is a further object of the present invention to provide the preparation sides that one kind can thicken the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness
Method.
In order to achieve the goal above, the present invention the following technical schemes are provided:
A kind of alkaline non-cyanogen galvanization electroplate liquid thickening zinc coating thickness, including following components:
Wherein, zinc oxide can be selected as 8g/L, 10g/L, 12g/L, 14g/L, 16g/L；Sodium hydroxide can be selected as 90g/
L,100g/L,110g/L,120g/L,130g/L,140g/L,150g/L,160g/L；Triethylene tetramine can be selected as 10g/L,
11g/L,12g/L,13g/L,14g/L,15g/L,16g/L；Hydroxypropyl imidazoles can be selected as 1g/L, 3g/L, 5g/L, 7g/L, 9g/
L,10g/L；[BMIM]PF6It can be selected as 1g/L, 2g/L, 3g/L, 4g/L, 5g/L；Methenamine can be selected as 1g/L, 2g/L,
3g/L,4g/L,5g/L；Brightener can be selected as 1g/L, 2g/L, 3g/L, 4g/L, 5g/L；Surplus uses water,
Compared with prior art, the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the invention include zinc oxide,
Sodium hydroxide, triethylene tetramine, hydroxypropyl imidazoles, [BMIM] PF6, methenamine, brightener and water；Utilize triethylene tetramine pair
Zinc ion carries out main complexing and zinc ion is deposited to cathode, utilizes hydroxypropyl imidazoles, [BMIM] PF6Collaboration with methenamine is made
Zinc ion is complexed with auxiliary so that deposition velocity is fast and greatly improve the zinc coating thickness of zinc coat, utilizes the work of brightener
With the brightness effect for improving zinc coat.It is electroplated, is deposited by the alkaline non-cyanogen galvanization electroplate liquid that can thicken zinc coating thickness
Speed is fast and can get thicker zinc layers, which is not in brittleness.
Wherein, the brightener is aldehydes brightener.Specifically, the brightener is veratraldehyde, adjacent sulfo group benzaldehyde, 4-
Any one in methoxybenzaldehyde.
Wherein, the water is chosen as deionized water, distilled water, any one in tap water.
The present invention also provides the preparation methods that one kind can thicken the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness, including with
Lower step:
(1) zinc oxide 8-16g, sodium hydroxide 90-150g are weighed, beaker is added water 200-250mL, sodium hydroxide is poured into
It is stirred in beaker to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring,
Stirring obtains basal liquid to being completely dissolved；
(2) triethylene tetramine of 10-16g/L, the hydroxypropyl miaow of 1-10g/L is added in solution obtained in step (1)
[BMIM] PF of azoles, 1-5g/L6, the methenamine of 2-4g/L, 1-5g/L brightener, then plus deionized water is to 1L, mixing
It stirs evenly, non-cyanogen galvanization electroplate liquid is made.
Preferably, further including that step (11) carries out pre-treatment to basal liquid after step (1), before step (2), it is added
1-3g zinc powder is handled.
Preferably, further including that step (12) carries out pre-treatment to basal liquid after step (11), before step (2), add
Enter 1-3g active carbon to be handled.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, but do not constitute to of the invention any
Limitation.
Embodiment 1
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 10g, sodium hydroxide 100g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 10g/L, hydroxypropyl imidazoles, the 1g/L of 2g/L are added into the filtering solution of step (12)
[BMIM] PF6, the methenamine of 2g/L, 2g/L veratraldehyde, then plus deionized water is to 1L, is mixed evenly, is made
Alkaline non-cyanogen galvanization electroplate liquid.
Embodiment 2
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 12g, sodium hydroxide 110g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 1g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 12g/L, hydroxypropyl imidazoles, the 3g/L of 4g/L are added into the filtering solution of step (12)
[BMIM] PF6, the methenamine of 3g/L, 3g/L adjacent sulfo group benzaldehyde, then plus deionized water is to 1L, is mixed equal
It is even, alkaline non-cyanogen galvanization electroplate liquid is made.
Embodiment 3
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 12g, sodium hydroxide 140g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 3g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 3g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 15g/L, hydroxypropyl imidazoles, the 5g/L of 8g/L are added into the filtering solution of step (12)
[BMIM] PF6, the methenamine of 4g/L, 4g/L 4-methoxybenzaldehyde, then plus deionized water is to 1L, is mixed equal
It is even, alkaline non-cyanogen galvanization electroplate liquid is made.
Embodiment 4
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 12g, sodium hydroxide 150g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 3g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 15g/L, hydroxypropyl imidazoles, the 3g/L of 7g/L are added into the filtering solution of step (12)
[BMIM] PF6, the methenamine of 3g/L, 2g/L 4-methoxybenzaldehyde, then plus deionized water is to 1L, is mixed equal
It is even, alkaline non-cyanogen galvanization electroplate liquid is made.
Comparative example 1
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of this comparative example, steps are as follows:
(1) zinc oxide 10g, sodium hydroxide 100g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 10g/L, hydroxypropyl imidazoles, the 2g/L of 2g/L are added into the filtering solution of step (12)
Methenamine, 2g/L veratraldehyde, then plus deionized water is to 1L, is mixed evenly, and alkaline non-cyanogen galvanization plating is made
Liquid.
Comparative example 2
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 10g, sodium hydroxide 100g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 10g/L, [BMIM] PF of 1g/L are added into the filtering solution of step (12)6, 2g/L
The veratraldehyde of methenamine, 2g/L, then plus deionized water is to 1L, is mixed evenly, alkaline non-cyanogen galvanization electroplate liquid is made.
Comparative example 3
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 10g, sodium hydroxide 100g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 10g/L, hydroxypropyl imidazoles, the 1g/L of 2g/L are added into the filtering solution of step (12)
[BMIM] PF6, 2g/L veratraldehyde, then plus deionized water is to 1L, is mixed evenly, and alkaline non-cyanogen galvanization plating is made
Liquid.
Comparative example 4
The preparation method of the alkaline non-cyanogen galvanization electroplate liquid for thickening zinc coating thickness of the present embodiment, steps are as follows:
(1) zinc oxide 10g, sodium hydroxide 100g are weighed, beaker is added water 250mL, sodium hydroxide is poured into beaker and is stirred
It mixes to being completely dissolved, zinc oxide is then tuned into paste with a little deionized water, is added in beaker while stirring, stir to complete
Fully dissolved obtains basal liquid；
(11) 2g zinc powder is added in above-mentioned prepared basal liquid, stirs 1h；
(12) 2g active carbon is added, stirs 1h, is filtered after standing 1h；
(2) triethylene tetramine of 10g/L, the veratraldehyde of 2g/L are added into the filtering solution of step (12), then plus goes
Ionized water is mixed evenly to 1L, alkaline non-cyanogen galvanization electroplate liquid is made.
Be electroplated and obtain plating using alkaline non-cyanogen galvanization electroplate liquid made from embodiment 1-4 and comparative example 1-4
Zinc coat carry out thickness test and brittleness test.
Electroplating experiments: being electroplated using 50cm × 50cm × 50cm electroplating bath, the length and width of electroplated product and a height of
10cm × 10cm × 0.2cm, temperature are 25 DEG C, electroplating time 20min, and cathode is electroplated product, and anode is graphite electrode, electricity
Stream is 2A.
Thickness test: analysis is measured using calibrator, each product tests zinc coating thickness in same position.
Brittleness test: heating 1h in 5 DEG C of 200 scholar of Muffle furnace for product, be then placed in room temperature water and be quenched, observation plating
Whether zinc layers occur falling off or blistering.
The test result of thickness test and brittleness test is as shown in table 1.
The test of 1 thickness of table and brittleness test result
As seen from the experiment, it is obtained using the alkaline non-cyanogen galvanization electroplate liquid that the application can thicken zinc coating thickness zinc-plated
Layer has excellent thickness, and the thickness zinc layers are not in brittleness.Wherein, the zinc coat that comparative example 4 obtains is very thick, but by
Only has main complexing agent in comparative example 4, polarity is very strong, and the complexing agent of no micronized particles, coating is not loose fine and close, zinc layers and substrate
Binding force it is very poor, and there is the situation that zinc coat falls off in brittleness test, which does not actually use value.Comparative example
Due to lacking auxiliary complex-former hydroxypropyl imidazoles or [BMIM] PF in 1-36Or one of methenamine, therefore, zinc-plated thickness
Degree, which is unable to get, to be thickened, therefore hydroxypropyl imidazoles, [BMIM] PF6It can be cooperateed with methenamine and thicken zinc coat.Also from comparative example 1
It can be seen that, lack [BMIM] PF6Addition, Several Thiourea Derivatives on Zinc Plate Surface is easy blistering, and brittleness is bad.
The above embodiments are merely a preferred embodiment of the present invention, and cannot limit interest field of the invention with this, because
This is still within the scope of the present invention according to equivalent variations made by scope of the present invention patent.
Claims (8)
1. the alkaline non-cyanogen galvanization electroplate liquid that one kind can thicken zinc coating thickness, which is characterized in that including following components:
2. the alkaline non-cyanogen galvanization electroplate liquid according to claim 1 for thickening zinc coating thickness, which is characterized in that including with
Lower component:
3. the alkaline non-cyanogen galvanization electroplate liquid according to claim 1 for thickening zinc coating thickness, which is characterized in that the light
Bright dose is aldehydes brightener.
4. the alkaline non-cyanogen galvanization electroplate liquid according to claim 3 for thickening zinc coating thickness, which is characterized in that the light
Bright dose is one of veratraldehyde, adjacent sulfo group benzaldehyde, 4-methoxybenzaldehyde.
5. the alkaline non-cyanogen galvanization electroplate liquid according to claim 1 for thickening zinc coating thickness, which is characterized in that the water
It is chosen as deionized water, distilled water, any one in tap water.
6. the preparation method of the alkaline non-cyanogen galvanization electroplate liquid of zinc coating thickness is thickened described in claim 1-5 any one,
Characterized by comprising the following steps:
(1) sodium hydroxide of 90-150g is poured into the beaker of the water containing 200-250mL and is stirred to being completely dissolved, then by 8-
The zinc oxide of 16g is tuned into paste with little water, is added in beaker while stirring, stirs to being completely dissolved, obtains basal liquid；
(2) triethylene tetramine of 10-16g/L, hydroxypropyl imidazoles, the 1- of 1-10g/L is added in solution obtained in step (1)
[BMIM] PF of 5g/L6, the methenamine of 2-4g/L, 1-5g/L brightener, then plus deionized water is to 1L, is mixed equal
It is even, the alkaline non-cyanogen galvanization electroplate liquid that can thicken zinc coating thickness is made.
7. the preparation method of the alkaline non-cyanogen galvanization electroplate liquid according to claim 6 for thickening zinc coating thickness, feature
Be, further include that step (11) carries out pre-treatment to basal liquid after step (1), before step (2), be added 1-3g zinc powder into
Row processing.
8. the preparation method of the alkaline non-cyanogen galvanization electroplate liquid according to claim 7 for thickening zinc coating thickness, feature
It is, further includes that step (12) setting carries out pre-treatment to basal liquid after step (11), before step (2), 1-3g is added
Active carbon is handled.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112725849A (en) * | 2020-12-23 | 2021-04-30 | 杭州佳兴镀锌有限公司 | Environment-friendly cyanide-free alkaline galvanizing electroplating solution and preparation method and electroplating process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112725849A (en) * | 2020-12-23 | 2021-04-30 | 杭州佳兴镀锌有限公司 | Environment-friendly cyanide-free alkaline galvanizing electroplating solution and preparation method and electroplating process thereof |
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