CN107236948B - A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI - Google Patents
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI Download PDFInfo
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- CN107236948B CN107236948B CN201710421758.6A CN201710421758A CN107236948B CN 107236948 B CN107236948 B CN 107236948B CN 201710421758 A CN201710421758 A CN 201710421758A CN 107236948 B CN107236948 B CN 107236948B
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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
- C23C22/68—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 solutions with pH between 6 and 8
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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
- C23C22/34—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 containing fluorides or complex fluorides
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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
- C23C22/53—Treatment of zinc or alloys based thereon
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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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses the passivator that a kind of inhibition zinc coating trivalent chromium is oxidized to Cr VI, are made of the raw material of following mass parts: chromic salt: 80~100 parts；Other metal salts: 10~20 parts；Oxidant: 30~40 parts；Film forming accelerating: 10~20 parts；Complexing agent: 10~20 parts；Wetting agent: 1~5 part；Inhibitor: 1~5 part；Water: 200 parts.It is Cr VI that passivator of the invention, which can effectively inhibit the trivalent chromium oxidation being passivated in part, and passivation part will not generate poisonous and hazardous Cr VI long-time is placed, comply fully with the regulation of RoHS and China's relevant laws and regulations.
Description
Technical field
The present invention relates to the passivator that a kind of inhibition zinc coating trivalent chromium is oxidized to Cr VI.
Background technique
RoHS, full name " about the instruction for using certain harmful components in electronic and electrical equipment is limited in ", in July, 2006
Formal implementation on the 1st, it is therefore intended that eliminate lead, mercury, cadmium, Cr VI, polybrominated biphenyls and the polybrominated diphenyl ethers in electric equipment products
Totally 6 substances make electric equipment products be more conducive to human health and environmental protection.On 2 18th, 2006, China was by information
Estate Division, which is taken the lead, has also put into effect corresponding regulation, since on March 1st, 2007 in electronics and electrical equipment in the market this 6
Kind harmful substance is supervised.
Currently, many electronics and electrical equipment require to carry out electrogalvanizing processing, used mainstream passivator on the market
It is all the not chromyl passivating agent products based on trivalent chromium mostly.However, at by existing trivalent chromium passivator
The passivation part managed will appear micro Cr VI after placing a period of time in passivation layer, and with the extension of standing time,
Content of 6-valence Cr ions can gradually increase, this is all unfavorable for human health and environmental protection.
Therefore, it is necessary to develop a kind of trivalent chromium oxidation being able to suppress in zinc coat into the passivator of Cr VI.
Summary of the invention
The purpose of the present invention is to provide the passivator that a kind of inhibition zinc coating trivalent chromium is oxidized to Cr VI.
The technical solution used in the present invention is:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, is made of the raw material of following mass parts:
Chromic salt: 80~100 parts；
Other metal salts: 10~20 parts；
Oxidant: 30~40 parts；
Film forming accelerating: 10~20 parts；
Complexing agent: 10~20 parts；
Wetting agent: 1~5 part；
Inhibitor: 1~5 part；
Water: 200 parts.
The chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides.
Other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate.
The oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid.
The film forming accelerating is at least one of sulfuric acid, sodium sulphate.
The complexing agent is at least one of citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, sodium potassium tartrate tetrahydrate.
The wetting agent is at least one of alkyl phenol polyoxyethylene ether, polyoxyethylene aliphatic alcohol ether.
The inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
The beneficial effects of the present invention are: it is six that passivator of the invention, which can effectively inhibit the trivalent chromium oxidation being passivated in part,
Valence chromium, passivation part will not generate poisonous and hazardous Cr VI long-time is placed, comply fully with RoHS and China's correlation method
The regulation of Laws & Regulations.
Specific embodiment
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, is made of the raw material of following mass parts:
Chromic salt: 80~100 parts；
Other metal salts: 10~20 parts；
Oxidant: 30~40 parts；
Film forming accelerating: 10~20 parts；
Complexing agent: 10~20 parts；
Wetting agent: 1~5 part；
Inhibitor: 1~5 part；
Water: 200 parts.
Preferably, the chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides.
Preferably, other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate.
Preferably, the oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid.
Preferably, the film forming accelerating is at least one of sulfuric acid, sodium sulphate.
Preferably, the complexing agent be citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, in sodium potassium tartrate tetrahydrate at least
It is a kind of.
Preferably, the wetting agent is at least one of alkyl phenol polyoxyethylene ether, polyoxyethylene aliphatic alcohol ether.
Preferably, the inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
The present invention will be further explained combined with specific embodiments below and explanation.
Embodiment 1:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, raw material composition are as shown in the table:
A kind of raw material composition table for the passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI of table 1
| Raw material | Mass parts |
| Chromic nitrate | 90 |
| Nickel sulfate | 13 |
| Sodium nitrate | 35 |
| Sodium sulphate | 15 |
| Ammonium acid fluoride | 12 |
| Polyoxyethylene aliphatic alcohol ether | 2 |
| Sodium sulfite | 2 |
| Pure water | 200 |
Embodiment 2:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, raw material composition are as shown in the table:
A kind of raw material composition table for the passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI of table 2
| Raw material | Mass parts |
| Chromium sulfate | 95 |
| Cobaltous sulfate | 13 |
| Sodium nitrate | 30 |
| Sodium sulphate | 20 |
| Citric acid | 13 |
| Alkyl phenol polyoxyethylene ether | 2 |
| Sodium hydrogensulfite | 5 |
| Pure water | 200 |
Embodiment 3:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, raw material composition are as shown in the table:
A kind of raw material composition table for the passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI of table 3
Embodiment 4:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, raw material composition are as shown in the table:
A kind of raw material composition table for the passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI of table 4
| Raw material | Mass parts |
| Six hydration chromic bromides | 80 |
| Cerous nitrate | 20 |
| Nitric acid | 35 |
| Sulfuric acid | 10 |
| Sodium potassium tartrate tetrahydrate | 10 |
| Polyoxyethylene aliphatic alcohol ether | 1 |
| Thiourea dioxide | 1 |
| Pure water | 200 |
Embodiment 5:
A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, raw material composition are as shown in the table:
A kind of raw material composition table for the passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI of table 5
| Raw material | Mass parts |
| Chromium sulfate | 100 |
| Nickel sulfate | 15 |
| Potassium nitrate | 40 |
| Sodium sulphate | 15 |
| Malonic acid | 20 |
| Alkyl phenol polyoxyethylene ether | 5 |
| Thiourea dioxide | 3 |
| Pure water | 200 |
Test case:
The passivator and certain commercially available passivator that Examples 1 to 5 is respectively adopted are passivated processing to galvanized part, then put naturally
It sets, the content of 6-valence Cr ions in real-time testing galvanized part, test result is as follows shown in table:
Content of 6-valence Cr ions in passivator and the commercially available processed galvanized part of certain passivator of the table 6 Jing Guo Examples 1 to 5
As shown in Table 6: even if also not going out after placing 3 months by the processed galvanized part of passivator of the invention
The case where existing trivalent chromium oxidation is at Cr VI, passivation effect is excellent；However, existing by the commercially available processed galvanized part of certain passivator
After placing a period of time, micro Cr VI can be generated, and as the content of the extension Cr VI of standing time can gradually increase.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (1)
1. a kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI, it is characterised in that: by the raw material of following mass parts
Composition:
Chromic salt: 80~100 parts；
Other metal salts: 10~20 parts；
Oxidant: 30~40 parts；
Film forming accelerating: 10~20 parts；
Complexing agent: 10~20 parts；
Wetting agent: 1~5 part；
Inhibitor: 1~5 part；
Water: 200 parts；
The chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides；
Other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate；
The oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid；
The film forming accelerating is at least one of sulfuric acid, sodium sulphate；
The complexing agent is at least one of citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, sodium potassium tartrate tetrahydrate；
The wetting agent is at least one of alkyl phenol polyoxyethylene ether, polyoxyethylene aliphatic alcohol ether；
The inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
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| CN201710421758.6A CN107236948B (en) | 2017-06-07 | 2017-06-07 | A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI |
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| CN201710421758.6A CN107236948B (en) | 2017-06-07 | 2017-06-07 | A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI |
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| CN107236948A CN107236948A (en) | 2017-10-10 |
| CN107236948B true CN107236948B (en) | 2019-02-22 |
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| CN109267056A (en) * | 2018-11-26 | 2019-01-25 | 武汉风帆电化科技股份有限公司 | Admiro trivalent chromium black passivator and its preparation process |
| CN109536940A (en) * | 2018-12-19 | 2019-03-29 | 广州传福化学技术有限公司 | A kind of zinc-plated passivator and Zincing passivation method |
| CN110172689B (en) * | 2019-05-09 | 2021-01-29 | 东北大学 | Zinc layer trivalent chromium color passivation treating fluid used at normal temperature and preparation and use methods thereof |
| CN110205616A (en) * | 2019-06-27 | 2019-09-06 | 安徽鼎旺环保材料科技有限公司 | Ferrous metal passivator and preparation method thereof |
| CN111364034A (en) * | 2020-02-18 | 2020-07-03 | 广州传福化学技术有限公司 | Nitrogen-free galvanized trivalent chromium color passivator and preparation method thereof |
| CN111394688A (en) * | 2020-04-29 | 2020-07-10 | 郑州中原利达新材料有限公司 | Trivalent chromium passivation solution for powder zinc impregnation process |
| CN113088952B (en) * | 2021-04-16 | 2023-01-10 | 上海昕沐化学科技有限公司 | Trivalent chromium passivator for galvanized material and preparation method and use method thereof |
| CN113201730A (en) * | 2021-05-08 | 2021-08-03 | 遵义智通金属表面技术处理有限公司 | Automatic line galvanizing color passivation method |
| CN114959674A (en) * | 2022-06-14 | 2022-08-30 | 广东比格莱科技有限公司 | Trivalent chromium blue zinc water and preparation method thereof |
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| CN103898496B (en) * | 2012-12-27 | 2016-08-24 | 苏州禾川化学技术服务有限公司 | A kind of novel silane nanometer trivalent chromium deactivating liquid and preparation method thereof |
| CN103320779B (en) * | 2013-06-25 | 2015-05-20 | 上海应用技术学院 | Passivation solution capable of inhibiting formation of hexavalent chromium in trivalent chromium passivation layer as well as preparation method and application of passivation solution |
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Denomination of invention: Passivator for inhibiting trivalent chromium of zinc coating from being oxidized to hexavalent chromium Effective date of registration: 20200327 Granted publication date: 20190222 Pledgee: Bank of China Co., Ltd. Nansha Branch of Guangdong Free Trade Pilot Area Pledgor: GUANGZHOU CHUANFU CHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020440000061 |
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Date of cancellation: 20210420 Granted publication date: 20190222 Pledgee: Bank of China Co.,Ltd. Nansha Branch of Guangdong Free Trade Pilot Area Pledgor: GUANGZHOU CHUANFU CHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020440000061 |