CN105839098B - Hot-dip galvanizing sheet steel chrome-free tanning agent and preparation method thereof - Google Patents
Hot-dip galvanizing sheet steel chrome-free tanning agent and preparation method thereof Download PDFInfo
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- CN105839098B CN105839098B CN201610374261.9A CN201610374261A CN105839098B CN 105839098 B CN105839098 B CN 105839098B CN 201610374261 A CN201610374261 A CN 201610374261A CN 105839098 B CN105839098 B CN 105839098B
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- dip galvanizing
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
Abstract
Present invention relates particularly to a kind of hot-dip galvanizing sheet steel chrome-free tanning agents and preparation method thereof, belong to field of metal surface treatment technology.The hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：25 40 parts of phytic acid, 8 15 parts of sodium metasilicate, 10 18 parts of sodium citrate, 5 16 parts of rosin resin, 15 25 parts of dispersion liquid of polytetrafluoroethylene (PTFE) concentration, 6 14 parts of lignosulfonate, 18 30 parts of ethyl alcohol, 20 30 parts of water.Hot-dip galvanizing sheet steel chrome-free tanning agent has the advantages that rotproofness is strong, Scratch Resistance energy is good, and is free of Cr VI, environmentally friendly.
Description
Technical field
The invention belongs to field of metal surface treatment technology, and in particular to a kind of hot-dip galvanizing sheet steel chrome-free tanning agent and its
Preparation method.
Background technology
Generally in order to which in metal surface formation protective film, processing can be passivated after plating, to improve corrosion resistance,
Either obtain corresponding purpose color or to reduce friction coefficient.
It can effectively improve the corrosion resistance of metal using traditional Cr VI passivator, but Cr VI negative unhealthy
And pollution environment, gradually it is eliminated.In addition the implementation of RoHS instructions, people are constantly in research chrome-free tanning agent.RoHS is instructed, i.e.,
《Electrically, limitation uses certain Hazardous Substances Directives in electronic equipment》, it is desirable that limitation uses lead in electronic electric equipment product
(Pb), mercury (Hg), cadmium (Cd), Cr VI (Cr6+), six kinds of harmful substances of polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE),
Middle lead, mercury, Cr VI, polybrominated biphenyls, the maximum allowable content of polybrominated diphenyl ethers be 0.1% (1000ppm), cadmium it is maximum allowable
Content is 0.01% (100ppm).
But in existing chrome-free tanning agent either using molybdate as main component or with rare earth metal salt be mainly at
Point, but the cost of these passivator is higher, and passivation effect is also not satisfactory, can't fully meet the market demand.Up to now,
The art does not occur chrome-free tanning agents a kind of really satisfactory and with preferable market prospects also.
Therefore how overcome the deficiencies in the prior art, it has also become urgent technical problem to be solved in the field.
Invention content
There is provided the purpose of the present invention is overcome the deficiencies in the prior art a kind of hot-dip galvanizing sheet steel chrome-free tanning agent and its
Preparation method, which has the advantages that corrosion resistance is strong, Scratch Resistance energy is good, and is free of Cr VI, to environment friend
It is good.
The technical solution adopted by the present invention is as follows：
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：25-40 parts of phytic acid, silicic acid
8-15 parts of sodium, 10-18 parts of sodium citrate, 5-16 parts of rosin resin, 15-25 parts of dispersion liquid of polytetrafluoroethylene (PTFE) concentration, sulfonation are wooden
6-14 parts plain, 18-30 parts of ethyl alcohol, 20-30 parts of water.
Above-described hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：Phytic acid 32
Part, 21 parts of dispersion liquid of 11 parts of sodium metasilicate, 14 parts of sodium citrate, 10 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration, lignosulfonate 9
Part, 25 parts of ethyl alcohol, 26 parts of water.
Above-described hot-dip galvanizing sheet steel chrome-free tanning agent, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is
60%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 90-120r/min, is obtained mixed
Close object B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 3-6h,
Up to the hot-dip galvanizing sheet steel chrome-free tanning agent.
Further, mixing speed is 110r/min in the step (2).
Beneficial effects of the present invention：
First, inventive formulation is reasonable, and obtained chrome-free tanning agent corrosion resistance is strong, and has good Scratch Resistance
Energy；
Second, inventive formulation is free of Cr VI, meets European Union RoSH instructions, environmentally friendly；
Third, preparation method of the present invention is easy, low for equipment requirements, is suitble to large-scale production.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, but should not be construed as limiting the invention.
The raw material used in the present invention unless otherwise noted, can pass through acquisition purchased in market.
Embodiment 1
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：25 parts of phytic acid, sodium metasilicate 8
Part, 10 parts of sodium citrate, 5 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration 15 parts of dispersion liquid, 6 parts of lignosulfonate, 18 parts of ethyl alcohol,
20 parts of water, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is 58%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 90r/min, obtains mixture
B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 3h, i.e.,
Obtain the hot-dip galvanizing sheet steel chrome-free tanning agent.
Embodiment 2
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：28 parts of phytic acid, sodium metasilicate 9
Part, 12 parts of sodium citrate, 8 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration 17 parts of dispersion liquid, 8 parts of lignosulfonate, 23 parts of ethyl alcohol,
24 parts of water, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is 59%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 100r/min, must be mixed
Object B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 4h, i.e.,
Obtain the hot-dip galvanizing sheet steel chrome-free tanning agent.
Embodiment 3
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：32 parts of phytic acid, sodium metasilicate 11
Part, 14 parts of sodium citrate, 10 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration 21 parts of dispersion liquid, 9 parts of lignosulfonate, 25 parts of ethyl alcohol,
26 parts of water, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is 60%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 110r/min, must be mixed
Object B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 5h, i.e.,
Obtain the hot-dip galvanizing sheet steel chrome-free tanning agent.
Embodiment 4
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：36 parts of phytic acid, sodium metasilicate 13
Part, 23 parts of dispersion liquid of 16 parts of sodium citrate, 12 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration, 11 parts of lignosulfonate, ethyl alcohol 28
Part, 28 parts of water, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is 61%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 110r/min, must be mixed
Object B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 6h, i.e.,
Obtain the hot-dip galvanizing sheet steel chrome-free tanning agent.
Embodiment 5
Hot-dip galvanizing sheet steel chrome-free tanning agent includes the following raw material according to mass fraction meter：40 parts of phytic acid, sodium metasilicate 15
Part, 25 parts of dispersion liquid of 18 parts of sodium citrate, 16 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration, 14 parts of lignosulfonate, ethyl alcohol 30
Part, 30 parts of water, wherein polytetrafluoroethylene (PTFE) concentration dispersion fluid solid content is 62%.
The preparation method of above-described hot-dip galvanizing sheet steel chrome-free tanning agent, includes the following steps：
(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；
(2) phytic acid, sodium citrate and rosin resin are sequentially added in ethyl alcohol, 1-2h is stirred with 120r/min, must be mixed
Object B；
(3) mixture A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, stirs 6h, i.e.,
Obtain the hot-dip galvanizing sheet steel chrome-free tanning agent.
Passivating method
Base material washed, pickling, washed, dry after, at ambient temperature, with bar spreader by the passivation of the present invention
Agent is coated on hot-galvanized steel plate surface, and 30s is toasted at 90 DEG C -110 DEG C, and natural cooling is tested for the property afterwards for 24 hours.
Performance test
1~5 products obtained therefrom of the embodiment of the present invention is tested for the property, wherein reference examples are chromating agent, as a result
Such as following table：
1 properties of product test data of table
Note：Every percentage in upper table indicates the corroded area percentage after experiment in 72 hours.
Wherein, neutral salt spray test：Hot-dip galvanizing sheet steel test piece after passivation is subjected to neutrality according to GB/T10125-1997
Salt spray test loses the corrosion resisting property of area evaluation passivating film with surface in vain.
X- scribe tests：Hot-dip galvanizing sheet steel test piece after passivation is diagonally crossed with blade, scuffing passivating film, then into
Row neutral salt spray test, to detect the corrosion resisting property under the conditions of X- scribing line post-passivation membrane damages.
Resistance to blacking experiment：Hot-dip galvanizing sheet steel test piece after passivation is placed in climatic chamber, it is opposite 70 DEG C × 80%
Resistance to blacking experiment is carried out under damp condition, the test piece of detection passivating film anti-blackening energy is hung on the automatic rotation in moisture-heat test-box
On frame, automatic rotary rack is rotated and reverse by identical interval time.
As seen from the above table, products obtained therefrom corrosion resistance of the present invention is strong, and anti-scratch effect is good, and it is blunt to reach chromate substantially
The effect of agent, wherein 3 best results of embodiment.
Claims (4)
1. hot-dip galvanizing sheet steel chrome-free tanning agent, which is characterized in that include the following raw material according to mass fraction meter：Phytic acid 32
Part, 21 parts of dispersion liquid of 11 parts of sodium metasilicate, 14 parts of sodium citrate, 10 parts of rosin resin, polytetrafluoroethylene (PTFE) concentration, lignosulfonate 9
Part, 25 parts of ethyl alcohol, 26 parts of water.
2. hot-dip galvanizing sheet steel chrome-free tanning agent according to claim 1, which is characterized in that the polytetrafluoroethylene (PTFE) is dense
Division dispersion liquid solid content is 60%.
3. the preparation method of hot-dip galvanizing sheet steel chrome-free tanning agent described in claim 1, which is characterized in that including walking as follows
Suddenly：(1) first lignosulfonate is added to the water, adds sodium metasilicate, stirred evenly, obtain mixture A；(2) by phytic acid, lemon
Lemon acid sodium and rosin resin sequentially add in ethyl alcohol, stir 1-2h with 90-120r/min, obtain mixture B；It (3) will mixing
Object A is uniformly mixed with mixture B, is eventually adding polytetrafluoroethylene (PTFE) concentration dispersion liquid, 3-6h is to get the hot-galvanized steel for stirring
Plate chrome-free tanning agent.
4. the preparation method of hot-dip galvanizing sheet steel chrome-free tanning agent according to claim 3, which is characterized in that the step
(2) mixing speed is 110r/mi n in.
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| CN201610374261.9A CN105839098B (en) | 2016-05-31 | 2016-05-31 | Hot-dip galvanizing sheet steel chrome-free tanning agent and preparation method thereof |
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| CN201610374261.9A CN105839098B (en) | 2016-05-31 | 2016-05-31 | Hot-dip galvanizing sheet steel chrome-free tanning agent and preparation method thereof |
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| CN105839098B true CN105839098B (en) | 2018-09-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243207A (en) * | 2005-08-19 | 2008-08-13 | 日本油漆株式会社 | Surface-conditioning composition and surface conditioning method |
| CN102373453A (en) * | 2010-08-05 | 2012-03-14 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free passivation solution and hot-dip galvanized metal material |
| CN102747352A (en) * | 2012-07-03 | 2012-10-24 | 中国人民解放军国防科学技术大学 | Passivator and passivation for hot galvanized sheet |
| CN103290401A (en) * | 2013-05-10 | 2013-09-11 | 安徽工业大学 | Chromium-free self-lubricating passivation solution and preparation method thereof |
| CN104404497A (en) * | 2014-12-11 | 2015-03-11 | 天长市飞龙金属制品有限公司 | Passivant for metal coating |
| CN104451626A (en) * | 2014-11-13 | 2015-03-25 | 无锡伊佩克科技有限公司 | Galvanized steel sheet passivating agent and preparation method thereof |
-
2016
- 2016-05-31 CN CN201610374261.9A patent/CN105839098B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243207A (en) * | 2005-08-19 | 2008-08-13 | 日本油漆株式会社 | Surface-conditioning composition and surface conditioning method |
| CN102373453A (en) * | 2010-08-05 | 2012-03-14 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free passivation solution and hot-dip galvanized metal material |
| CN102747352A (en) * | 2012-07-03 | 2012-10-24 | 中国人民解放军国防科学技术大学 | Passivator and passivation for hot galvanized sheet |
| CN103290401A (en) * | 2013-05-10 | 2013-09-11 | 安徽工业大学 | Chromium-free self-lubricating passivation solution and preparation method thereof |
| CN104451626A (en) * | 2014-11-13 | 2015-03-25 | 无锡伊佩克科技有限公司 | Galvanized steel sheet passivating agent and preparation method thereof |
| CN104404497A (en) * | 2014-12-11 | 2015-03-11 | 天长市飞龙金属制品有限公司 | Passivant for metal coating |
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| CN105839098A (en) | 2016-08-10 |
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