CN111621173A - Environment-friendly zinc coating sealing liquid and use method thereof - Google Patents
Environment-friendly zinc coating sealing liquid and use method thereof Download PDFInfo
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- CN111621173A CN111621173A CN202010392444.XA CN202010392444A CN111621173A CN 111621173 A CN111621173 A CN 111621173A CN 202010392444 A CN202010392444 A CN 202010392444A CN 111621173 A CN111621173 A CN 111621173A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- 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
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- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
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Abstract
An environment-friendly zinc coating sealing liquid relates to the technical field of steel rust prevention, and comprises the following materials in parts by weight: 5-60 parts of ethyl silicate hydrolysate (with the solid content of 30-50), 0.1-5 parts of silane coupling agent, 0.5-20 parts of acrylic resin, 1-10 parts of feldspar powder, 0.5-5 parts of zinc oxide, 0.5-5 parts of bentonite, 0-5 parts of metal powder and 5-50 parts of alcohol. The antirust coating sprayed by the sealing liquid is environment-friendly and nontoxic, has no release of any toxic VOC (VOC is an English abbreviation of volatile organic compounds), can be directly applied to a zinc coating, and plays a role in sealing and corrosion prevention.
Description
Technical Field
The invention relates to the technical field of zinc plating sealing, in particular to an environment-friendly zinc plating layer sealing liquid and a using method thereof.
Background
The zinc coating is a common corrosion prevention mode for preventing the steel from being rusted back, the common modes are hot galvanizing and cold galvanizing (electrogalvanizing), after the galvanizing is finished, in order to prevent the galvanized layer from being oxidized quickly and further rust an iron substrate, the zinc layer needs to be passivated, and after the passivation, common sealing liquid is coated in a dip mode, wherein the passivation usually involves the pollution problem of heavy metal chromium or strong acid and does not meet the environmental protection requirement; the prior traditional galvanizing technology has the following defects: sulfuric acid, hydrofluoric acid, hydrochloric acid, nitric acid and the like or mixed liquid of the sulfuric acid, the hydrofluoric acid, the hydrochloric acid and the nitric acid are used for pickling before galvanization, wherein the pickling speed of the sulfuric acid is low and cannot meet the requirement of industrial production, and the cleaning speed of other strong acids is high, but acid mist harmful to human bodies is released in the cleaning process, so that the operation risk is high; the chromizing treatment solution contains hexavalent chromium chromate or trivalent chromium chromate, but the chromium-containing sewage can seriously pollute the environment and is strictly controlled by environmental regulations.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides the environment-friendly zinc coating sealing liquid, the rust-proof coating sprayed by the sealing liquid is environment-friendly and nontoxic, does not release any toxic VOC (VOC is an English abbreviation of volatile organic compound), and can directly act on the zinc coating to play a role in sealing and corrosion prevention.
The purpose of the invention can be realized by the following technical scheme: the environment-friendly zinc coating sealing liquid consists of the following raw materials in parts by weight: 5-60 parts of ethyl silicate hydrolysate (with the solid content of 30-50), 0.1-5 parts of silane coupling agent, 0.5-20 parts of acrylic resin, 1-10 parts of feldspar powder, 0.5-5 parts of zinc oxide, 0.5-5 parts of bentonite, 0-5 parts of metal powder and 5-50 parts of alcohol.
Preferably, the environment-friendly zinc coating sealing liquid consists of the following raw materials in parts by weight: 50 parts of ethyl silicate hydrolysate, 2 parts of silane coupling agent, 5 parts of acrylic resin, 10 parts of feldspar powder, 3 parts of zinc oxide, 1 part of bentonite and 29 parts of alcohol.
Preferably, the silane coupling agent is composed of one or more of the following materials: contains methyltrimethoxysilane, gamma-aminopropyltriethoxysilane (KH-550), gamma-methacryloxypropyltrimethoxysilane (KH-570), and gamma-glycidoxypropyltrimethoxysilane (KH-560).
Preferably, the alcohol comprises one or more mixtures of methanol, ethanol, butanol, isopropanol.
Preferably, the alcohol is prepared from the following raw materials in parts by weight: 15 parts of isopropanol and 14 parts of butanol.
The invention provides a preparation method of the environment-friendly zinc coating sealing liquid, which comprises the following steps:
s1, mixing and stirring the ethyl silicate hydrolysate, 1/4-3/4 alcohol and acrylic resin to obtain a compound I;
s2, adding a silane coupling agent into the first compound prepared in the step S1, mixing and stirring to obtain a second compound;
s3, adding feldspar powder, zinc oxide, bentonite and metal powder into the compound II prepared in the step S2, uniformly stirring to obtain a mixture III, adding the rest alcohol into the mixture, and uniformly stirring.
The invention provides a using process method of the sealing liquid for galvanizing steel, which comprises the following steps:
step one, degreasing: putting the steel into degreasing fluid for soaking and degreasing;
step two, cleaning: cleaning the steel degreased in the first step with a NaCl solution;
step three, acid washing: soaking the steel cleaned in the step two in a pickling solution;
step four, galvanization: washing the steel subjected to acid washing in the third step with water, and then plating zinc;
step five, coating: and D, washing the steel subjected to the galvanizing in the fourth step with water, cooling to below 40 ℃, directly coating sealing liquid, and finally drying.
Preferably, in the fifth step, the manner of applying the sealing liquid is direct spraying, and the drying treatment is performed after the direct spraying is completed.
Preferably, in the fifth step, the manner of coating the sealing liquid is dip coating, and after the dip coating is finished, the spin-off operation treatment is performed, and after the spin-off is finished, the drying treatment is performed.
The invention has the beneficial effects that:
(1) the confining liquid takes ethyl silicate hydrolysate as a main body, the ethyl silicate hydrolysate is modified by acrylic resin, and the ethyl silicate hydrolysate and the acrylic resin are subjected to cross-linking reaction to form a composite chain structure taking Si-O bonds as a main body, namely a compound I; the compound I is mixed with a silane coupling agent to carry out crosslinking reaction again to form reticular resin taking Si-O bonds as a main body, and the Si-O bonds have higher stability, so that the sealing liquid is insoluble in water and solvents and has better weather resistance, heat resistance and compactness, therefore, the sealing liquid can directly act on a zinc coating, and the acrylic resin can stop surface cracks after the sealing liquid is formed into a film after modifying ethyl silicate hydrolysate, so that the sealing liquid has better sealing and corrosion prevention effects; the nano-scale ethyl silicate hydrolysate is used as a raw material, and is subjected to cross-linking reaction with other materials to form the reticular resin with Si-O bonds as a main body, so that the reticular resin also has nano-scale compactness, and has better corrosion and rust prevention effects.
Drawings
Fig. 1 is experimental data on the degree of rusting of example 1.
Fig. 2 is experimental data on the degree of rusting of example 2.
Fig. 3 is experimental data on the degree of rusting of example 3.
Fig. 4 is experimental data on the degree of rusting of example 4.
Fig. 5 is experimental data on the degree of rusting of example 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The environment-friendly zinc coating sealing liquid consists of the following raw materials in parts by weight: 5-60 parts of ethyl silicate hydrolysate (with the solid content of 30-50), 0.1-5 parts of silane coupling agent, 0.5-20 parts of acrylic resin, 1-10 parts of feldspar powder, 0.5-5 parts of zinc oxide, 0.5-5 parts of bentonite, 0-5 parts of metal powder and 5-50 parts of alcohol.
The invention provides a preparation method of an environment-friendly zinc coating sealing liquid, which comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate, the alcohol of 1/4-3/4 and the acrylic resin at the rotation speed of 400-2000 rpm for 5-40 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 400-2000 r/min for 5-40 min to obtain a compound II;
s3: adding feldspar powder, zinc oxide, bentonite and metal powder into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at the speed of 400 revolutions per minute for 5-40 minutes, adding the rest alcohol into the mixture, and uniformly stirring.
The sealing liquid takes ethyl silicate as a main body, utilizes acrylic acid to modify the ethyl silicate, and the ethyl silicate, the acrylic acid and the alcohol are added to generate a cross-linking reaction to form a composite chain structure taking Si-O bonds as a main body, namely a compound I; and then the compound I is mixed with a silane coupling agent to carry out crosslinking reaction again to form the reticular resin taking Si-O bonds as a main body, and the Si-O bonds have higher stability compared with C-C bonds, so that the confining liquid is insoluble in water and solvents, and has better weather resistance, heat resistance and compactness, thereby having better confining and corrosion prevention effects.
Because the film layer made of the ethyl silicate usually takes Si-O bond as the main part, if acrylic resin is not added, the film layer has a thickness of more than 6 microns and has a cracking phenomenon; therefore, after the acrylic resin is added into the sealing liquid, the coating can be free from cracking at 30 micrometers, and has better compactness and corrosion resistance.
The addition of the feldspar powder and the bentonite can reduce stress caused by shrinkage of a coating film during drying, and the fibrous structure of the feldspar powder can also increase the flexibility of the coating and reduce cracking.
The invention provides a process method for galvanizing steel by using the sealing liquid, which comprises the following steps:
step one, degreasing: putting the steel in order, putting the steel into degreasing fluid for soaking and degreasing, wherein the temperature of the degreasing fluid is kept between 40 and 50 ℃, and the soaking time is 0.1 to 1 hour;
step two, cleaning: cleaning the steel degreased in the first step by using a NaCl solution with the content of 5-10%;
step three, acid washing: soaking the steel cleaned in the step two in a pickling solution for 0.02-0.5 hours, wherein the temperature of the pickling solution is kept at 40-50 ℃, and the pickling solution is composed of environment-friendly composite organic acid;
the composite acid can be citric acid, alkylbenzene sulfonic acid, oxalic acid and other environment-friendly acids, and for example, the pickling solution comprises the following raw materials in percentage by mass: 2 parts of dodecyl benzene sulfonic acid, 12 parts of ammonium chloride, 2 parts of surfactant, 25 parts of other organic acid and 59 parts of water;
after the completion of pickling, the pickling solution is recycled by: firstly, oxidizing ferrous ions into ferric ions by using an oxygen introduction or electrochemical method, then removing the ferric ions by using a precipitation method or a membrane exchange method, and recycling the pickling solution.
Step four, galvanization: washing the steel subjected to acid washing in the third step with water, and then galvanizing, wherein galvanizing can adopt one of hot galvanizing and cold galvanizing;
step five, coating: washing the steel subjected to zinc plating in the fourth step with water, cooling to below 40 ℃, directly coating sealing liquid, and finally drying;
the method comprises the following steps of (1) coating sealing liquid, wherein the sealing liquid is coated in two modes, the first mode is direct spraying, and drying treatment is carried out after the direct spraying is finished; the second method is dip-coating, and the throwing-off operation is performed after the dip-coating is finished, so that the phenomenon that the coating is too thick is avoided, and the drying treatment is performed after the throwing-off is finished.
The first method is to dry the steel at normal temperature for at least 7 days; the second method is drying and drying, and drying is carried out for 10 minutes in an environment at 60 ℃.
The pickling solution in the galvanizing process adopts environment-friendly compound organic acid, so that the problems of gas release and operation danger in the cleaning process of the traditional pickling solution are solved; after the galvanization is finished, the sealing liquid is directly coated, a layer of compact protective film is formed on the surface layer of the zinc layer, the zinc layer is protected from air oxidation corrosion, and meanwhile, passivation after galvanization and heavy metal chromium pollution caused by cleaning after passivation are avoided.
In addition, as trivalent chromium ions are considered to be relatively environment-friendly chromizing liquid, although the chromium-containing waste liquid still needs to be treated, the surface of the chromized steel has better gloss control, and when the surface of the steel has the gloss requirement, the coating process treatment of the step five can be carried out after the trivalent chromium is chromized.
The following describes the present invention with reference to specific examples:
example 1
The environment-friendly zinc coating sealing liquid comprises the following material components in parts by mass:
and (3) ethyl silicate hydrolysate: 50 (solid content 30-50)
Silane coupling agent: 2
Acrylic resin: 4
Feldspar powder: 1
Zinc oxide: 0.5
Bentonite: 0.5
Metal powder: 0
Isopropyl alcohol: 27
Butanol: 15
A preparation method of an environment-friendly zinc coating sealing liquid comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate, half of alcohol and acrylic resin at the rotating speed of 600 revolutions per minute for 10 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 600 revolutions per minute for 10 minutes to obtain a compound II;
s3: adding feldspar powder, zinc oxide and bentonite into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at 600 rpm for 20 minutes, adding the rest alcohol into the third mixture, and uniformly stirring.
Example 2
The environment-friendly zinc coating sealing liquid comprises the following material components in parts by mass:
and (3) ethyl silicate hydrolysate: 50 (solid content 30-50)
Silane coupling agent: 2
Acrylic resin: 5
Feldspar powder: 10
Zinc oxide: 3
Bentonite: 1
Metal powder: 2
Isopropyl alcohol: 15
Butanol: 14
A preparation method of an environment-friendly zinc coating sealing liquid comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate, half of alcohol and acrylic resin at the rotating speed of 400 revolutions per minute for 20 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 400 r/min for 15 min to obtain a compound II;
s3: adding feldspar powder, zinc oxide, bentonite and metal powder into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at 400 rpm for 30 minutes, adding the rest alcohol into the third mixture, and uniformly stirring.
Example 3
The environment-friendly zinc coating sealing liquid comprises the following material components in parts by mass:
and (3) ethyl silicate hydrolysate: 60 (solid content 30-50)
Silane coupling agent: 5
Acrylic resin: 20
Feldspar powder: 10
Zinc oxide: 5
Bentonite: 5
Metal powder: 0
Butanol: 20
A preparation method of an environment-friendly zinc coating sealing liquid comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate, half of alcohol and acrylic resin at the rotating speed of 600 revolutions per minute for 30 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 600 revolutions per minute for 30 minutes to obtain a compound II;
s3: adding feldspar powder, zinc oxide, bentonite and metal powder into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at 600 rpm for 20 minutes, adding the rest alcohol into the third mixture, and uniformly stirring.
Example 4
The environment-friendly zinc coating sealing liquid comprises the following material components in parts by mass:
and (3) ethyl silicate hydrolysate: 5 (solid content 30-50)
Silane coupling agent: 0.1
Acrylic resin: 20
Feldspar powder: 0.5
Zinc oxide: 0.5
Bentonite: 0.5
Metal powder: 0
Butanol: 10
A preparation method of an environment-friendly zinc coating sealing liquid comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate, half of alcohol and acrylic resin at the rotating speed of 600 revolutions per minute for 10 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 600 revolutions per minute for 10 minutes to obtain a compound II;
s3: adding feldspar powder, zinc oxide and bentonite into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at 600 rpm for 20 minutes, adding the rest alcohol into the third mixture, and uniformly stirring.
Example 5
The environment-friendly zinc coating sealing liquid comprises the following material components in parts by mass:
and (3) ethyl silicate hydrolysate: 53 (solid content 30-50)
Silane coupling agent: 2
Feldspar powder: 1, zinc oxide: 0.5
Bentonite: 0.5
Metal powder: 0
Isopropyl alcohol: 27.5
Butanol: 15.5
A preparation method of an environment-friendly zinc coating sealing liquid comprises the following steps:
s1: mixing and stirring the ethyl silicate hydrolysate and half of alcohol at the rotating speed of 400 revolutions per minute for 35 minutes to obtain a compound I;
s2: adding a silane coupling agent into the compound I prepared in the step S1, mixing and stirring at the rotating speed of 400 r/min for 35 min to obtain a compound II;
s3: adding feldspar powder, zinc oxide and bentonite into the second compound prepared in the step S2, uniformly stirring to obtain a third mixture, stirring at 400 rpm for 25 minutes, adding the rest alcohol into the mixture, and uniformly stirring.
Example 6
The preparation process of the sealing liquid for galvanizing steel includes the following steps:
step one, degreasing: putting the steel in order, putting the steel into degreasing fluid for soaking and degreasing, wherein the temperature of the degreasing fluid is kept between 40 and 50 ℃, and the soaking time is 0.1 to 1 hour;
step two, cleaning: cleaning the steel degreased in the first step by using a NaCl solution with the content of 5-10%;
step three, acid washing: soaking the steel cleaned in the step two in a pickling solution for 0.02-0.5 hours, wherein the temperature of the pickling solution is kept at 40-50 ℃, and the pickling solution is composed of environment-friendly composite organic acid;
step four, galvanization: washing the steel subjected to acid washing in the third step with water, and then galvanizing, wherein galvanizing can adopt one of hot galvanizing and cold galvanizing;
step five, coating: and D, washing the galvanized steel in the fourth step with water, cooling to below 40 ℃, directly coating the sealing liquid in a manner of direct spraying, and drying for 10 minutes in an environment at 60 ℃ after the direct spraying is finished.
The sealing liquids prepared in examples 1 to 5 were used in the method of using the steel galvanizing of example 6, and the degree of rusting of the actual product was observed as the most intuitive experimental data, as shown in the accompanying fig. 1 to 5.
As shown in tables 1 to 5, the sealing liquid prepared according to the blending ratios and the preparation methods of examples 1 and 3 to 4 has a more prominent effect on rust prevention compared with the conventional passivation treatment process in the spray coating process after galvanization, and thus has better corrosion and rust prevention effects; after the metal powder is added into the confining liquid in the embodiment 2, the confining liquid has a metallic luster feeling, and meets the production requirement of a coating film with surface requirements after being sprayed; since the sealing liquid in example 5 does not contain an acrylic resin, a large number of cracks are generated when the film thickness exceeds 40 μm after the surface of the workpiece is sprayed, and thus, example 5 verifies the effect of the addition of the acrylic resin, so that the sealing liquid of the present application has good elasticity and further has good anticorrosive and antirust effects.
The invention has been described above with reference to preferred embodiments, but the scope of protection of the invention is not limited thereto, and all technical solutions falling within the scope of the claims are within the scope of protection of the invention. Various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict.
Claims (9)
1. The environment-friendly zinc coating sealing liquid is characterized by comprising the following raw materials in parts by weight: 5-60 parts of ethyl silicate hydrolysate (with the solid content of 30-50), 0.1-5 parts of silane coupling agent, 0.5-20 parts of acrylic resin, 1-10 parts of feldspar powder, 0.5-5 parts of zinc oxide, 0.5-5 parts of bentonite, 0-5 parts of metal powder and 5-50 parts of alcohol.
2. The environment-friendly zinc coating sealing liquid according to claim 1, wherein the silane coupling agent is composed of one or more of the following materials: contains methyltrimethoxysilane, gamma-aminopropyltriethoxysilane (KH-550), gamma-methacryloxypropyltrimethoxysilane (KH-570), and gamma-glycidoxypropyltrimethoxysilane (KH-560).
3. The environmental protection zinc coating sealing liquid according to claim 1, wherein the acid comprises one or more of acetic acid, hydrochloric acid and phosphoric acid.
4. The environmentally friendly zinc coating sealing liquid according to claim 1, wherein the alcohol comprises one or more of methanol, ethanol, butanol and isopropanol.
5. The environment-friendly zinc coating sealing liquid according to claim 4, wherein the alcohol comprises the following raw materials in parts by weight: 15 parts of isopropanol and 14 parts of butanol.
6. The preparation method of the environment-friendly galvanizing coat sealing liquid as described in the claims 1 to 5, characterized by comprising the following steps:
s1, mixing and stirring the ethyl silicate hydrolysate, 1/4-3/4 alcohol and acrylic resin to obtain a compound I;
s2, adding a silane coupling agent into the first compound prepared in the step S1, mixing and stirring to obtain a second compound;
s3, adding feldspar powder, zinc oxide, bentonite and metal powder into the compound II prepared in the step S2, uniformly stirring to obtain a mixture III, adding the rest alcohol into the mixture, and uniformly stirring.
7. The process method for galvanizing steel by using the environment-friendly galvanizing coat sealing fluid as described in the claims 1 to 5 is characterized by comprising the following steps:
step one, degreasing: putting the steel into degreasing fluid for soaking and degreasing;
step two, cleaning: cleaning the steel degreased in the first step with a NaCl solution;
step three, acid washing: soaking the steel cleaned in the step two in a pickling solution;
step four, galvanization: washing the steel subjected to acid washing in the third step with water, and then plating zinc;
step five, coating: and D, washing the steel subjected to the galvanizing in the fourth step with water, cooling to below 40 ℃, directly coating sealing liquid, and finally drying.
8. The process for galvanizing steel products by using the environment-friendly galvanizing coat sealing solution according to claim 7, wherein in the fifth step, the sealing solution is coated by direct spraying, and drying treatment is performed after the direct spraying is completed.
9. The process method for galvanizing steel products by using the environment-friendly galvanizing coat sealing solution according to claim 7, wherein in the fifth step, the sealing solution is coated by dip coating, and after the dip coating is finished, the throwing operation treatment is performed, and after the throwing operation treatment is finished, the drying treatment is performed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112725854A (en) * | 2020-12-17 | 2021-04-30 | 台州来智科技有限公司 | Processing method for electroplating pretreatment |
| CN113549905A (en) * | 2021-06-30 | 2021-10-26 | 惠州市安泰普表面处理科技有限公司 | Sealing agent suitable for chemical nickel plating layer and hole sealing method |
| CN114016692A (en) * | 2021-11-09 | 2022-02-08 | 晋江市新思维环保科技有限公司 | Honeycomb aluminum plate based on hot press molding and preparation process thereof |
| CN115233126A (en) * | 2022-08-05 | 2022-10-25 | 四川振鸿钢制品有限公司 | Steel surface galvanizing antiseptic treatment process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004160833A (en) * | 2002-11-13 | 2004-06-10 | Toppan Printing Co Ltd | Gas barrier film laminate with heat treatment resistance |
| CN104448989A (en) * | 2014-12-19 | 2015-03-25 | 常熟市董浜镇华进电器厂 | Heating tube |
| DE102016215408A1 (en) * | 2015-12-11 | 2017-06-14 | Hyundai Motor Company | ULTRAVIOLETTABSORBIEREN COATING COMPOSITION WITH IMPROVED ABRASTENING STRENGTH |
| CN108276811A (en) * | 2017-12-11 | 2018-07-13 | 安徽开林新材料股份有限公司 | Aqueous zinc-plated sealer of one kind and preparation method thereof |
-
2020
- 2020-05-11 CN CN202010392444.XA patent/CN111621173A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004160833A (en) * | 2002-11-13 | 2004-06-10 | Toppan Printing Co Ltd | Gas barrier film laminate with heat treatment resistance |
| CN104448989A (en) * | 2014-12-19 | 2015-03-25 | 常熟市董浜镇华进电器厂 | Heating tube |
| DE102016215408A1 (en) * | 2015-12-11 | 2017-06-14 | Hyundai Motor Company | ULTRAVIOLETTABSORBIEREN COATING COMPOSITION WITH IMPROVED ABRASTENING STRENGTH |
| CN108276811A (en) * | 2017-12-11 | 2018-07-13 | 安徽开林新材料股份有限公司 | Aqueous zinc-plated sealer of one kind and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112725854A (en) * | 2020-12-17 | 2021-04-30 | 台州来智科技有限公司 | Processing method for electroplating pretreatment |
| CN113549905A (en) * | 2021-06-30 | 2021-10-26 | 惠州市安泰普表面处理科技有限公司 | Sealing agent suitable for chemical nickel plating layer and hole sealing method |
| CN114016692A (en) * | 2021-11-09 | 2022-02-08 | 晋江市新思维环保科技有限公司 | Honeycomb aluminum plate based on hot press molding and preparation process thereof |
| CN115233126A (en) * | 2022-08-05 | 2022-10-25 | 四川振鸿钢制品有限公司 | Steel surface galvanizing antiseptic treatment process |
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Application publication date: 20200904 |