CN108385099A - A kind of passivating treating agent for environment-friendly galvanized steel sheets - Google Patents
A kind of passivating treating agent for environment-friendly galvanized steel sheets Download PDFInfo
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- CN108385099A CN108385099A CN201810506994.2A CN201810506994A CN108385099A CN 108385099 A CN108385099 A CN 108385099A CN 201810506994 A CN201810506994 A CN 201810506994A CN 108385099 A CN108385099 A CN 108385099A
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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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
-
- 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
- C23C2222/20—Use of solutions containing silanes
Abstract
The present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, are made of the raw material of following parts by weight：The γ glycidyl ether oxygen propyl trimethoxy silicanes that parts by weight are 10 20, the mercaptobenzothiazoler salt that parts by weight are 15 20, the humic acid that parts by weight are 10 20, the anti-rust metal salt that parts by weight are 5 10, the sodium nitrate that parts by weight are 58, acrylic acid (2 acrylamide, 2 methyl propane sulfonic acid) hydroxypropyl acrylate multiple copolymer that parts by weight are 35, the sodium hydroxide that parts by weight are 24, the nitric acid that parts by weight are 57, the pH adjusting agent that parts by weight are 23, the sodium metasilicate that parts by weight are 13, the sulfonated castor oil that parts by weight are 12.The present invention is with the above mentioned technical proposal, its component is set to be different from existing passivation treating agent, without containing the metal chromium ions for having pollution to environment, after being passivated processing to galvanized steel plain sheet or aluminum-zinc alloy silicon steel plate simultaneously, the corrosion resistance requirement needed for galvanized steel plain sheet or aluminum-zinc alloy silicon steel plate can be met.
Description
Technical field
The present invention relates to environmentally friendly science and technology field more particularly to a kind of passivating treating agent for environment-friendly galvanized steel sheets.
Background technology
Zinc-plated surface of steel plate is the important means for improving steel plate anti-corrosion capability, but zinc coat is easy in wet environment
Corrosion forms hickie and greyness, therefore is generally required after zinc-plated and take Passivation Treatment to improve its corrosion resistance.
For the passivation process generally used at present to be passivated processing using chromate, this processing mode technique is simple
Single, at low cost, corrosion resistance and good, but due to wherein containing a large amount of Cr VIs, it in process of production can be to environment and people
Body causes to seriously endanger.And chromate can be replaced there is presently no ideal chromium-free passivating treatment agent, reach identical corrosion-resistant
Property.Existing galvanized steel plain sheet inorganic agent, production technology is complicated, and retention cycle is short, and required drying temperature is high (70~80 DEG C), work
Performance is undesirable, and salt-fog resistant test performance is to be not more than 5% in 96 hours.
Invention content
In order to solve the above technical problem, the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by following
The raw material of parts by weight forms：γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 10-20, parts by weight 15-20
Mercaptobenzothiazoler salt, parts by weight be 10-20 humic acid, parts by weight be 5-10 anti-rust metal salt, parts by weight be 5-8's
Sodium nitrate, parts by weight be 3-5 acrylic acid-(2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer,
PH adjusting agent that nitric acid that sodium hydroxide that parts by weight are 2-4, parts by weight are 5-7, parts by weight are 2-3, parts by weight are the inclined of 1-3
Sodium metasilicate, the sulfonated castor oil that parts by weight are 1-2；The humic acid is prepared by following methods：
The mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 10-20min；
The mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs 30-
40min；
Leonardite raw material is added, is separated by solid-liquid separation after standing 1-2h；
By the liquid storage after separation of solid and liquid at change 20-30h in tank body, and pH value is adjusted to 8-10.
Further, the weight ratio of the sodium carbonate, sodium hydroxide and sodium tripolyphosphate is 1:2-5:8-10.
Further, the volume ratio of the sour hydrogen ammonium, propyl alcohol and hexylene glycol is 1:2-4:6-9.
Further, it is made of the raw material of following parts by weight：Parts by weight are γ-glycidyl ether oxygen propyl three of 15-18
Humic acid that mercaptobenzothiazoler salt that methoxy silane, parts by weight are 15-16, parts by weight are 12-15, parts by weight are 6-8's
The acrylic acid-(2- acrylamide-2-methyl propane sulfonics)-that sodium nitrate that anti-rust metal salt, parts by weight are 6-7, parts by weight are 4-5
Nitric acid that sodium hydroxide that hydroxypropyl acrylate multiple copolymer, parts by weight are 2-3, parts by weight are 5-6, parts by weight 2-2.5
PH adjusting agent, parts by weight be 1-2 sodium metasilicate, parts by weight be 1-1.5 sulfonated castor oil.
Further, it is made of the raw material of following parts by weight：γ-glycidyl ether oxygen propyl trimethoxy that parts by weight are 16
Anti-rust metal salt that humic acid that mercaptobenzothiazoler salt that base silane, parts by weight are 15, parts by weight are 13, parts by weight are 7, again
Measure part be 6 sodium nitrate, parts by weight be 4 acrylic acid-(2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate it is polynary
PH adjusting agent that nitric acid that sodium hydroxide that copolymer, parts by weight are 2, parts by weight are 6, parts by weight are 2, parts by weight be 1 it is inclined
Sodium metasilicate, the sulfonated castor oil that parts by weight are 1.5.
Further, the passivating treating agent for environment-friendly galvanized steel sheets further includes the Ludox that parts by weight are 1-5.
Further, the passivating treating agent for environment-friendly galvanized steel sheets further includes the fluotitanic acid that parts by weight are 2-5.
Further, the passivating treating agent for environment-friendly galvanized steel sheets further includes the nano silicon dioxide that parts by weight are 1-2.
Further, the pH adjusting agent be fluoric acid, ammonium hydroxide, phosphoric acid, phosphate, boric acid, zirconic acid, carbonate, citric acid,
One or more of tannic acid, oxalic acid, formic acid, acetic acid.
The present invention by adopting the above-described technical solution, its component is made to be different from existing passivation treating agent, without containing pair
Environment has the metal chromium ions of pollution, while after being passivated processing to galvanized steel plain sheet or aluminum-zinc alloy silicon steel plate, can meet zinc-plated
Corrosion resistance requirement needed for steel plate or aluminum-zinc alloy silicon steel plate.
According to below in conjunction with the detailed description to the specific embodiment of the invention, this will become more apparent to one of ordinary skill in the art
Above-mentioned and other purposes, the advantages and features of invention.
Specific implementation mode
Embodiment 1：
An embodiment of the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by the raw material group of following parts by weight
At：Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 10, parts by weight are 20, again
Measure part be 20 humic acid, parts by weight be 5 anti-rust metal salt, parts by weight be 5 sodium nitrate, parts by weight be 3 acrylic acid-
Sodium hydroxide that (2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, parts by weight are 2, parts by weight are
The sulfonated castor oil that sodium metasilicate that pH adjusting agent that 5 nitric acid, parts by weight are 3, parts by weight are 3, parts by weight are 2；The corruption
Acid is grown to be prepared by following methods：
Step S1, the mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 10min；
Step S2, the mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs
Mix 30min；
Leonardite raw material is added in step S3, is separated by solid-liquid separation after standing 2h；
PH value by the liquid storage after separation of solid and liquid at change 20h in tank body, and is adjusted to 10 by step S4.
Embodiment 2：
An embodiment of the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by the raw material group of following parts by weight
At：Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 20, parts by weight are 15, again
Measure part be 10 humic acid, parts by weight be 10 anti-rust metal salt, parts by weight be 8 sodium nitrate, parts by weight be 5 acrylic acid-
Sodium hydroxide that (2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, parts by weight are 4, parts by weight are
The sulfonated castor oil that sodium metasilicate that pH adjusting agent that 7 nitric acid, parts by weight are 2, parts by weight are 3, parts by weight are 1；The corruption
Acid is grown to be prepared by following methods：
Step S1, the mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 20min；
Step S2, the mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs
Mix 40min；
Leonardite raw material is added in step S3, is separated by solid-liquid separation after standing 1h；
PH value by the liquid storage after separation of solid and liquid at change 30h in tank body, and is adjusted to 8 by step S4.
The weight ratio of the sodium carbonate, sodium hydroxide and sodium tripolyphosphate is 1:3:5.The acid hydrogen ammonium, propyl alcohol and two
The volume ratio of alcohol is 1:3:8.The passivating treating agent for environment-friendly galvanized steel sheets further includes the Ludox that parts by weight are 1.
Embodiment 3：
An embodiment of the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by the raw material group of following parts by weight
At：Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 15, parts by weight are 18, again
Measure part be 15 humic acid, parts by weight be 8 anti-rust metal salt, parts by weight be 6 sodium nitrate, parts by weight be 4 acrylic acid-
Sodium hydroxide that (2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, parts by weight are 3, parts by weight are
The sulfonated castor oil that sodium metasilicate that pH adjusting agent that 6 nitric acid, parts by weight are 3, parts by weight are 2, parts by weight are 2；The corruption
Acid is grown to be prepared by following methods：
Step S1, the mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 15min；
Step S2, the mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs
Mix 30min；
Leonardite raw material is added in step S3, is separated by solid-liquid separation after standing 1.5h；
PH value by the liquid storage after separation of solid and liquid at change 25h in tank body, and is adjusted to 9 by step S4.
The weight ratio of the sodium carbonate, sodium hydroxide and sodium tripolyphosphate is 1:2:7.The acid hydrogen ammonium, propyl alcohol and two
The volume ratio of alcohol is 1:2:6.The passivating treating agent for environment-friendly galvanized steel sheets further includes the Ludox that parts by weight are 5.
Embodiment 4：
An embodiment of the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by the raw material group of following parts by weight
At：Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 16, parts by weight are 15, again
Measure part be 13 humic acid, parts by weight be 7 anti-rust metal salt, parts by weight be 6 sodium nitrate, parts by weight be 4 acrylic acid-
Sodium hydroxide that (2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, parts by weight are 2, parts by weight are
The sulfonated castor oil that sodium metasilicate that pH adjusting agent that 6 nitric acid, parts by weight are 2, parts by weight are 1, parts by weight are 1.5；It is described
Humic acid is prepared by following methods：
Step S1, the mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 17min；
Step S2, the mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs
Mix 33min；
Leonardite raw material is added in step S3, is separated by solid-liquid separation after standing 1h；
PH value by the liquid storage after separation of solid and liquid at change 28h in tank body, and is adjusted to 8.5 by step S4.
The weight ratio of the sodium carbonate, sodium hydroxide and sodium tripolyphosphate is 1:2.5:8.The acid hydrogen ammonium, propyl alcohol and
The volume ratio of glycol is 1:1.5:7.The passivating treating agent for environment-friendly galvanized steel sheets further includes the Ludox that parts by weight are 3.
The passivating treating agent for environment-friendly galvanized steel sheets further includes the fluotitanic acid that parts by weight are 2.The environment-friendly type galvanized steel
Plate passivation treating agent further includes the nano silicon dioxide that parts by weight are 1.
Embodiment 5：
An embodiment of the present invention provides a kind of passivating treating agent for environment-friendly galvanized steel sheets, by the raw material group of following parts by weight
At：Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 13, parts by weight are 17, again
Measure part be 18 humic acid, parts by weight be 8 anti-rust metal salt, parts by weight be 7 sodium nitrate, parts by weight be 5 acrylic acid-
Sodium hydroxide that (2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, parts by weight are 3, parts by weight are
The sulfonated castor oil that sodium metasilicate that pH adjusting agent that 7 nitric acid, parts by weight are 3, parts by weight are 2, parts by weight are 2；The corruption
Acid is grown to be prepared by following methods：
Step S1, the mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 13min；
Step S2, the mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs
Mix 36min；
Leonardite raw material is added in step S3, is separated by solid-liquid separation after standing 1.5h；
PH value by the liquid storage after separation of solid and liquid at change 23h in tank body, and is adjusted to 9.5 by step S4.
The weight ratio of the sodium carbonate, sodium hydroxide and sodium tripolyphosphate is 1:2:10.The acid hydrogen ammonium, propyl alcohol and two
The volume ratio of alcohol is 1:3:8.The passivating treating agent for environment-friendly galvanized steel sheets further includes the Ludox that parts by weight are 2.
The passivating treating agent for environment-friendly galvanized steel sheets further includes the fluotitanic acid that parts by weight are 5.The environment-friendly type galvanized steel
Plate passivation treating agent further includes the nano silicon dioxide that parts by weight are 2.The pH adjusting agent is fluoric acid, ammonium hydroxide, phosphoric acid, phosphoric acid
One or more of salt, boric acid, zirconic acid, carbonate, citric acid, tannic acid, oxalic acid, formic acid, acetic acid.
The present invention by adopting the above-described technical solution, its component is made to be different from existing passivation treating agent, without containing pair
Environment has the metal chromium ions of pollution, while after being passivated processing to galvanized steel plain sheet or aluminum-zinc alloy silicon steel plate, can meet zinc-plated
Corrosion resistance requirement needed for steel plate or aluminum-zinc alloy silicon steel plate.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (9)
1. a kind of passivating treating agent for environment-friendly galvanized steel sheets, which is characterized in that be made of the raw material of following parts by weight：Parts by weight are
Mercaptobenzothiazoler salt that γ-glycidyl ether oxygen propyl trimethoxy silicane of 10-20, parts by weight are 15-20, parts by weight are
The propylene that sodium nitrate that anti-rust metal salt that the humic acid of 10-20, parts by weight are 5-10, parts by weight are 5-8, parts by weight are 3-5
Acid-(2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, the sodium hydroxide, again that parts by weight are 2-4
Measure part be 5-7 nitric acid, parts by weight be 2-3 pH adjusting agent, parts by weight be 1-3 sodium metasilicate, parts by weight be 1-2 sulfonation
Castor oil；The humic acid is prepared by following methods：
The mixture of sodium carbonate, sodium hydroxide and sodium tripolyphosphate is added into sedimentation basin, and stirs 10-20min；
The mixture of sour hydrogen ammonium, propyl alcohol and hexylene glycol is added into the sedimentation basin equipped with the mixture, and stirs 30-40min；
Leonardite raw material is added, is separated by solid-liquid separation after standing 1-2h；
By the liquid storage after separation of solid and liquid at change 20-30h in tank body, and pH value is adjusted to 8-10.
2. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the sodium carbonate, hydrogen-oxygen
The weight ratio for changing sodium and sodium tripolyphosphate is 1:2-5:8-10.
3. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the acid hydrogen ammonium, propyl alcohol
Volume ratio with hexylene glycol is 1:2-4:6-9.
4. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that by the original of following parts by weight
Material composition：The sulfydryl benzo that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 15-18, parts by weight are 15-16
Sodium nitrate that anti-rust metal salt that humic acid that thiazole salt, parts by weight are 12-15, parts by weight are 6-8, parts by weight are 6-7, weight
Part is acrylic acid-(2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, the parts by weight 2-3 of 4-5
Sodium hydroxide, parts by weight be 5-6 nitric acid, parts by weight be 2-2.5 pH adjusting agent, parts by weight be 1-2 sodium metasilicate, again
Measure the sulfonated castor oil that part is 1-1.5.
5. passivating treating agent for environment-friendly galvanized steel sheets according to claim 4, which is characterized in that by the original of following parts by weight
Material composition：The mercaptobenzothiazoler that γ-glycidyl ether oxygen propyl trimethoxy silicane that parts by weight are 16, parts by weight are 15
The propylene that sodium nitrate that anti-rust metal salt that humic acid that salt, parts by weight are 13, parts by weight are 7, parts by weight are 6, parts by weight are 4
Acid-(2- acrylamide-2-methyl propane sulfonics)-hydroxypropyl acrylate multiple copolymer, the sodium hydroxide that parts by weight are 2, weight
Part for 6 nitric acid, parts by weight be 2 pH adjusting agent, parts by weight be 1 sodium metasilicate, parts by weight be 1.5 sulfonated castor oil.
6. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the environment-friendly type galvanized steel
Plate passivation treating agent further includes the Ludox that parts by weight are 1-5.
7. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the environment-friendly type galvanized steel
Plate passivation treating agent further includes the fluotitanic acid that parts by weight are 2-5.
8. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the environment-friendly type galvanized steel
Plate passivation treating agent further includes the nano silicon dioxide that parts by weight are 1-2.
9. passivating treating agent for environment-friendly galvanized steel sheets according to claim 1, which is characterized in that the pH adjusting agent is fluorine
One kind or several in acid, ammonium hydroxide, phosphoric acid, phosphate, boric acid, zirconic acid, carbonate, citric acid, tannic acid, oxalic acid, formic acid, acetic acid
Kind.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109943837A (en) * | 2019-05-08 | 2019-06-28 | 兴化市华成镀锌管件有限公司 | A kind of surface treating agent for galvanized steel plain sheet |
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| CN103966593A (en) * | 2014-05-12 | 2014-08-06 | 无锡海特新材料研究院有限公司 | Antiseptic and anticorrosive treatment method for metal surface |
| CN105925971A (en) * | 2016-06-14 | 2016-09-07 | 中山市东升镇威尔特表面技术厂 | Environmental-friendly coating agent |
| CN107761088A (en) * | 2017-11-30 | 2018-03-06 | 珠海横琴思国科技发展有限公司 | A kind of corrosion-resistant neutral Chrome-free film agent and preparation method thereof |
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- 2018-05-24 CN CN201810506994.2A patent/CN108385099A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103966593A (en) * | 2014-05-12 | 2014-08-06 | 无锡海特新材料研究院有限公司 | Antiseptic and anticorrosive treatment method for metal surface |
| CN105925971A (en) * | 2016-06-14 | 2016-09-07 | 中山市东升镇威尔特表面技术厂 | Environmental-friendly coating agent |
| CN107761088A (en) * | 2017-11-30 | 2018-03-06 | 珠海横琴思国科技发展有限公司 | A kind of corrosion-resistant neutral Chrome-free film agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109943837A (en) * | 2019-05-08 | 2019-06-28 | 兴化市华成镀锌管件有限公司 | A kind of surface treating agent for galvanized steel plain sheet |
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Application publication date: 20180810 |