CN110607522A - Vitrification agent and preparation method and application thereof - Google Patents
Vitrification agent and preparation method and application thereof Download PDFInfo
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- CN110607522A CN110607522A CN201910966426.5A CN201910966426A CN110607522A CN 110607522 A CN110607522 A CN 110607522A CN 201910966426 A CN201910966426 A CN 201910966426A CN 110607522 A CN110607522 A CN 110607522A
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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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides
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Abstract
A vitrification agent and a preparation method and application thereof are disclosed, wherein the vitrification agent comprises the following components in parts by mass: 1.0 to 3.0 parts of zinc oxide; 3.0 to 5.2 portions of nitric acid; 0.5-1.3 parts of fluotitanic acid; 4.2 to 7.5 portions of fluozirconic acid; 2.0 to 3.5 portions of sodium molybdate; 1.2-2.5 parts of citric acid; 2.5 to 4.0 portions of tartaric acid; 2.0 to 3.0 portions of fluoboric acid; 0.3 to 0.5 portion of chromium-free passivation additive; 62.8 to 83.3 portions of water. The vitrification agent can generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the surface of metal to improve the corrosion resistance of the surface of the metal. The vitrification agent does not adopt a phosphorization process and does not contain phosphoric acid, so that the pollution of phosphorus can be reduced, and the environment friendliness is relatively good.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to a vitrification agent and a preparation method and application thereof.
Background
Metal corrosion has always been a problem in industrial production, and billions of dollars are lost each year in China due to corrosion, so that metal corrosion prevention is imminent. In the plate of the air conditioner outdoor unit, the air conditioner outdoor unit is usually placed outdoors, so that the requirement on corrosion resistance is inevitably high, in the prior art, in order to improve the corrosion resistance of the plate of the air conditioner outdoor unit, a phosphating process is usually adopted to improve the corrosion resistance of the plate of the air conditioner outdoor unit, and the phosphating process is to generate a layer of wear-resistant and corrosion-resistant crystalline film layer with certain hardness and certain thickness on the metal surface after a steel part is subjected to chemical phosphating treatment, so that the corrosion resistance is improved. However, the phosphating process has phosphorus pollution and poor environmental protection, and the corrosion resistance of the metal is not satisfactory.
Disclosure of Invention
Therefore, a vitrification agent which is good in environmental protection and capable of improving the corrosion resistance of the plate of the air conditioner outdoor unit, and a preparation method and application thereof are needed.
The vitrification agent comprises the following components in parts by mass:
zinc oxide as control means 1.0 to 3.0 parts by weight;
carbon dioxide as control, and 3.0 to 5.2 parts;
0.5 to 1.3 parts of as further dried particles of fluotitanic acid as further dried particles;
4.2 to 7.5 parts of fluozirconic acid as dried particles as control;
2.0 to 3.5 parts of sodium molybdate as control layer;
as carbon dioxide as control means, citric acid as control means 1.2-2.5 parts;
(ii) tartaric acid, as further defined as inorganic particles, 2.5-4.0 parts;
as little as carbon and carbon black, as less than or equal to 2.0 parts to 3.0 parts;
0.3 to 0.5 parts of chromium-free passivation additive as control particles;
28.8 to 83.3 parts as dried particles as water.
In one embodiment, the chromium-free passivation additive is Albriticct CP 30.
In one embodiment, the water is deionized water.
In one embodiment, the vitrification agent comprises the following components in parts by mass:
zinc oxide as control means 2.0 to 2.8;
carbon dioxide as control means, 4.5 to 5 parts;
0.8 to 1.2 parts of as further dried particles of fluotitanic acid as further dried particles;
as further control, fluozirconic acid, as further control, 6.5-7.2 parts;
sodium molybdate as dried particles, 2.5 to 3 parts;
as carbon dioxide as control means, citric acid as control means 1.6-1.9 parts;
(ii) tartaric acid, as further defined as inorganic particles, 3.2-3.5 parts;
as little as carbon and carbon black, as less than or equal to 2.4 parts to 2.8 parts;
0.32 to 0.4 parts of chromium-free passivation additive as control particles;
as water, carbon, and carbon black.
In one embodiment, the vitrification agent comprises the following components in parts by mass:
as carbon dioxide as carbon and carbon dioxide;
4.7 parts of nitric acid as dried particles as control layer;
as control means, fluotitanic acid, as control means 1.1 parts;
as further dried, and as further dried, and as further dried;
sodium molybdate as dried particles as control, 2.8 parts;
as further dried, carbon dioxide and carbon dioxide as dried, as further dried, as dried, etc. 1.7 parts;
as control means, tartaric acid, as control means, 3.4 parts;
as dried and dried fluoboric acid, as dried and dried, etc. 2.6 parts;
0.34 parts of chromium-free passivation additive as control particles;
as further dried water, carbon dioxide as control means 74.16.
A method for preparing a vitrification agent, the vitrification agent being as described in any one of the above embodiments, the method comprising the steps of:
adding part of water into zinc oxide, and mixing to obtain a zinc oxide suspension;
adding nitric acid, citric acid and tartaric acid into the zinc oxide suspension, and carrying out first mixing operation to obtain a first mixture;
adding fluozirconic acid, fluotitanic acid, fluoboric acid, sodium molybdate and a chromium-free passivation additive into the first mixture, and performing a second mixing operation to obtain a second mixture;
and adding the rest water into the second mixture, and performing third mixing operation to obtain the vitrification agent.
In one embodiment, the portion of water is 1/5-1/3 of the total mass of water.
In one embodiment, the portion of water is 1/4 of the total mass of water.
The use of the vitrification agent as described in any of the above embodiments in a panel for an outdoor unit of an air conditioner.
The use of the vitrification agent prepared by the method of any one of the above embodiments in a sheet material for an outdoor unit of an air conditioner.
The vitrification agent can generate a layer of nano ceramic conversion film mainly based on zirconium salt and titanium salt on the metal surface to improve the corrosion resistance of the metal surface, when the vitrification agent is applied to a plate of an air conditioner outdoor unit, namely, if the plate of the air conditioner outdoor unit is treated by the vitrification agent, the performance after coating can be obviously improved, the vitrification and 50KG impact tests can be passed, the duration of the neutral salt spray resistance test can reach 720H, and the unilateral corrosion distance is not more than 2mm, so that the corrosion rate of the air conditioner outdoor unit after the powder coating is damaged due to the action of external force is greatly slowed down, the service life of an air conditioner is prolonged, and great economic benefits are brought to national economy. The vitrification agent does not adopt a phosphorization process and does not contain phosphoric acid, so that the pollution of phosphorus can be reduced, and the environment friendliness is relatively good.
Detailed Description
In order to facilitate an understanding of the present invention, a more complete description of the present invention is provided below. Preferred embodiments of the present invention are given. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, the vitrification agent comprises the following components in parts by mass:
zinc oxide as control means 1.0 to 3.0 parts by weight;
carbon dioxide as control, and 3.0 to 5.2 parts;
0.5 to 1.3 parts of as further dried particles of fluotitanic acid as further dried particles;
4.2 to 7.5 parts of fluozirconic acid as dried particles as control;
2.0 to 3.5 parts of sodium molybdate as control layer;
as carbon dioxide as control means, citric acid as control means 1.2-2.5 parts;
(ii) tartaric acid, as further defined as inorganic particles, 2.5-4.0 parts;
as little as carbon and carbon black, as less than or equal to 2.0 parts to 3.0 parts;
0.3 to 0.5 parts of chromium-free passivation additive as control particles;
28.8 to 83.3 parts as dried particles as water.
The vitrification agent can generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the surface of metal to improve the corrosion resistance of the surface of the metal, can better improve the corrosion resistance of the conversion film and improve the binding force of the film layer by adding 1.0-3.0 parts of zinc oxide, has better slow release effect by adding 2.0-3.5 parts of sodium molybdate, can enable the conversion film formed on the surface of the metal to be more uniform, and has better compactness of the film layer. By adding 2.0-3.0 parts of fluoboric acid, the film has a better promoting effect on the formation of a film layer, and the film forming rate is improved. 1.2-2.5 parts of citric acid and 2.5-4.0 parts of tartaric acid are added to form a chelate with metal ions, so that the generation of precipitates in the using process of a vitrification agent can be reduced, the quality of a conversion film layer is improved, and a chromium-free passivation additive is added to enable a monolayer to be coated on the surface of metal so as to further improve the salt spray resistance of the metal and not influence the adhesive force of a subsequent conversion film coating. When being applied to the board of the air conditioner outer unit with above-mentioned vitrification agent, namely, if handle the back with the outer unit board of air conditioner with above-mentioned vitrification agent, performance after the application can show and improve, not only can pass through hundred check and 50KG impact test, moreover it is long can reach 720H and unilateral corrosion distance no more than 2mm to be able to reach neutral salt fog test, slow down the corrosion rate that leads to the outer unit of air conditioner after the coating damage at powder coating receives the exogenic action greatly, improve the life of air conditioner, bring huge economic benefits for national economy. The vitrification agent does not adopt a phosphorization process and does not contain phosphoric acid, so that the pollution of phosphorus can be reduced, and the environment friendliness is relatively good.
Specifically, the chromium-free passivation additive is Albriticct CP 30. Therefore, the salt spray resistance of the metal can be further improved, and the adhesive force of a subsequent conversion coating is not influenced.
In one embodiment, the water is deionized water, so that the influence of impurities in the water on the film layer can be reduced, and the quality of the film layer can be improved.
Preferably, the vitrification agent comprises the following components in parts by mass:
zinc oxide as control means 2.0 to 2.8;
carbon dioxide as control means, 4.5 to 5 parts;
0.8 to 1.2 parts of as further dried particles of fluotitanic acid as further dried particles;
as further control, fluozirconic acid, as further control, 6.5-7.2 parts;
sodium molybdate as dried particles, 2.5 to 3 parts;
as carbon dioxide as control means, citric acid as control means 1.6-1.9 parts;
(ii) tartaric acid, as further defined as inorganic particles, 3.2-3.5 parts;
as little as carbon and carbon black, as less than or equal to 2.4 parts to 2.8 parts;
0.32 to 0.4 parts of chromium-free passivation additive as control particles;
as water, carbon, and carbon black.
Therefore, the vitrification agent can better generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the metal surface by adopting the components in parts by mass, can further improve the corrosion resistance of the metal surface, and has better salt mist resistance.
More preferably, the vitrification agent comprises the following components in parts by mass:
as carbon dioxide as carbon and carbon dioxide;
4.7 parts of nitric acid as dried particles as control layer;
as control means, fluotitanic acid, as control means 1.1 parts;
as further dried, and as further dried, and as further dried;
sodium molybdate as dried particles as control, 2.8 parts;
as further dried, carbon dioxide and carbon dioxide as dried, as further dried, as dried, etc. 1.7 parts;
as control means, tartaric acid, as control means, 3.4 parts;
as dried and dried fluoboric acid, as dried and dried, etc. 2.6 parts;
0.34 parts of chromium-free passivation additive as control particles;
as further dried water, carbon dioxide as control means 74.16.
Therefore, the vitrification agent can better generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the metal surface by adopting the components in parts by mass, can further improve the corrosion resistance of the metal surface, and has better salt mist resistance. The research of the applicant finds that the salt spray resistance is better when the vitrification agent with the components in parts by mass is applied to the plate of the air conditioner outdoor unit, the neutral salt spray resistance test duration can reach more than 750H, and the unilateral corrosion distance is not more than 2 mm.
In one embodiment, the plate of the air conditioner outdoor unit is a steel plate, or the shell or the casing of the air conditioner outdoor unit is made of a steel plate. In particular, the vitrification agent of the present invention is particularly suitable for use in an air conditioner outdoor unit in which a steel plate is made of a plate material. In another example, the steel sheet is a cold-rolled steel sheet.
In another embodiment, the vitrification agent comprises the following components in percentage by mass:
as carbon and carbon, zinc oxide, as carbon and carbon, and 2.4% as carbon and carbon;
as carbon dioxide and carbon dioxide as carbon dioxide;
as control elements of fluotitanic acid, 1.1% as control elements;
as further control, and as further control, fluozirconic acid, as further control, 6.8%;
sodium molybdate as dried and dried granules, 2.8%;
as control elements, citric acid, and carbon dioxide as control elements, and 1.7% as control elements;
as control, as further, tartaric acid, as further, as control, and as further, control, and 3.4% as further;
as control elements, fluoboric acid, and as control elements, 2.6%;
chromium-free passivation additive, as dry as control, 0.34% of particles;
as water as control media, carbon dioxide as control particles 74.16.
Therefore, the vitrification agent can better generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the metal surface by adopting the components in parts by mass, can further improve the corrosion resistance of the metal surface, and has better salt mist resistance. The research of the applicant finds that the salt spray resistance is better when the vitrification agent with the components in parts by mass is applied to the plate of the air conditioner outdoor unit, the neutral salt spray resistance test duration can reach more than 750H, and the unilateral corrosion distance is not more than 2 mm.
The vitrification agent in any embodiment can generate a layer of nano-scale ceramic conversion film mainly based on zirconium salt and titanium salt on the metal surface to improve the corrosion resistance of the metal surface, and when the vitrification agent is applied to a plate of an air conditioner outdoor unit, namely, if the plate of the air conditioner outdoor unit is treated by the vitrification agent, the performance after coating can be obviously improved, the plate can pass through a Baige and 50KG impact test, the duration of a neutral salt spray resistance test can reach 720H, and the unilateral corrosion distance is not more than 2mm, so that the corrosion rate of the air conditioner outdoor unit after the powder coating is damaged due to the action of external force is greatly slowed down, the service life of an air conditioner is prolonged, and great economic benefits are brought to national economy. The vitrification agent does not adopt a phosphorization process and does not contain phosphoric acid, so that the pollution of phosphorus can be reduced, and the environment friendliness is relatively good.
The invention also provides a preparation method of the vitrification agent, wherein the vitrification agent is the vitrification agent in any embodiment, and the preparation method of the vitrification agent comprises the following steps:
s110: adding part of water into zinc oxide, and mixing to obtain a zinc oxide suspension;
specifically, zinc oxide is weighed, part of water is added, stirring is carried out for 10min by using a stirring device, the stirring speed is 100-. In one embodiment, the portion of water is 1/5-1/3 of the total mass of water. Thus, the zinc oxide suspension can be prepared well. Preferably, the portion of water is 1/4 of the total mass of water.
S120: adding nitric acid, citric acid and tartaric acid into the zinc oxide suspension, and carrying out first mixing operation to obtain a first mixture;
in this example, nitric acid, citric acid, and tartaric acid were added to the zinc oxide suspension to perform a first mixing operation, thereby obtaining a first mixture. Specifically, the first mixing operation is a first stirring and mixing operation, for example, the stirring speed of the first stirring and mixing operation is 100 rpm to 250 rpm, and the stirring and mixing time is 2 to 300 minutes; in another example, the stirring and mixing time is 10 minutes, and thus the mixing operation can be preferably performed. For example, the first stirring and mixing operation is performed using a stirring device.
S130: adding fluozirconic acid, fluotitanic acid, fluoboric acid, sodium molybdate and a chromium-free passivation additive into the first mixture, and performing a second mixing operation to obtain a second mixture;
in this example, a second mixture was obtained by adding fluorozirconic acid, fluorotitanic acid, fluoroboric acid, sodium molybdate, and a chromium-free passivation additive to the first mixture and performing a second mixing operation. In one embodiment, the second mixing operation is a second stirring operation, for example, the stirring speed of the second stirring operation is 100 rpm to 250 rpm, and the stirring and mixing time is 15 minutes, so that the mixing operation can be preferably performed. The second stirring and mixing operation is performed, for example, using a stirring device.
S140: and adding the rest water into the second mixture, and performing third mixing operation to obtain the vitrification agent.
Specifically, the third mixing operation is a third stirring and mixing operation, and for example, the stirring speed of the third stirring and mixing operation is 100 rpm to 250 rpm, and the stirring and mixing time is 15 minutes, so that the mixing operation can be preferably performed. The third stirring and mixing operation is performed, for example, by using a stirring device.
The preparation method of the vitrification agent can well prepare the vitrification agent, particularly, the vitrification agent is prepared by firstly preparing zinc oxide into suspension, then adding nitric acid, citric acid and tartaric acid to mix evenly, then adding fluozirconic acid, fluotitanic acid, fluoboric acid, sodium molybdate and chromium-free passivation additive, and then adding the rest water, so that when the vitrification agent is applied to the plate of the air conditioner outdoor unit by adopting the sample adding sequence, namely, if the plate of the air conditioner outdoor unit is treated by the vitrification agent, the performance after coating can be obviously improved, the vitrification agent can pass through a Baige and 50KG impact test, the neutral salt spray resistance test time can reach 720H, the unilateral corrosion distance is not more than 2mm, the corrosion rate of the air conditioner outdoor unit after the powder coating is damaged due to the external force is greatly slowed down, and the service life of the air conditioner is prolonged, brings great economic benefit to national economy.
Particularly, after a suspension is prepared by dissolving zinc oxide with 1/4 water based on the total mass of water to prepare a suspension, a concentrated vitrification agent is generated, and then the rest water is added to prepare the vitrification agent, particularly the combined vitrification agent comprises the following components in percentage by mass:
as carbon and carbon, zinc oxide, as carbon and carbon, and 2.4% as carbon and carbon;
as carbon dioxide and carbon dioxide as carbon dioxide;
as control elements of fluotitanic acid, 1.1% as control elements;
as further control, and as further control, fluozirconic acid, as further control, 6.8%;
sodium molybdate as dried and dried granules, 2.8%;
as control elements, citric acid, and carbon dioxide as control elements, and 1.7% as control elements;
as control, as further, tartaric acid, as further, as control, and as further, control, and 3.4% as further;
as control elements, fluoboric acid, and as control elements, 2.6%;
chromium-free passivation additive, as dry as control, 0.34% of particles;
as water as control media, carbon dioxide as control particles 74.16.
Therefore, the applicant researches and discovers that the preparation method of the vitrification agent adopts the sample adding sequence, so that the film forming effect is better, the whole solution is more uniform, and the precipitation can be effectively prevented. Of course, the mechanism thereof has yet to be studied.
The preparation method of the vitrification agent is characterized in that zinc oxide is dissolved to prepare suspension liquid, then adding nitric acid, citric acid and tartaric acid, uniformly mixing them, then adding fluorozirconic acid, fluotitanic acid, fluoroboric acid, sodium molybdate and chromium-free passivation additive, then adding the rest water, thus preparing the obtained vitrification agent by adopting the above sample adding sequence, when the vitrification agent is applied to the plate of the air conditioner outdoor unit, that is, if the air conditioner outdoor unit board is treated by the vitrification agent, the performance after coating can be remarkably improved, the board can pass not only the Baige and 50KG impact tests, and the neutral salt spray resistance test duration can reach 720H and the unilateral corrosion distance is not more than 2mm, so that the corrosion rate of the air conditioner external unit after the powder coating is damaged due to the action of external force is greatly reduced, the service life of the air conditioner is prolonged, and great economic benefit is brought to national economy.
The use of the vitrification agent as described in any of the above embodiments in a panel for an outdoor unit of an air conditioner.
The use of the vitrification agent prepared by the method of any one of the above embodiments in a sheet material for an outdoor unit of an air conditioner.
The application of the plate in the outdoor unit of the air conditioner, namely the application of the plate in the outer shell or the casing of the outdoor unit of the air conditioner, specifically means that the steel plate for manufacturing the casing is treated by the vitrification agent prepared by the preparation method of the vitrification agent of the invention in advance.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. It should be noted that "in one embodiment," "for example," "as another example," and the like, are intended to illustrate the application and are not intended to limit the application. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The vitrification agent is characterized by comprising the following components in parts by mass:
zinc oxide as control means 1.0 to 3.0 parts by weight;
carbon dioxide as control, and 3.0 to 5.2 parts;
0.5 to 1.3 parts of as further dried particles of fluotitanic acid as further dried particles;
4.2 to 7.5 parts of fluozirconic acid as dried particles as control;
2.0 to 3.5 parts of sodium molybdate as control layer;
as carbon dioxide as control means, citric acid as control means 1.2-2.5 parts;
(ii) tartaric acid, as further defined as inorganic particles, 2.5-4.0 parts;
as little as carbon and carbon black, as less than or equal to 2.0 parts to 3.0 parts;
0.3 to 0.5 parts of chromium-free passivation additive as control particles;
28.8 to 83.3 parts as dried particles as water.
2. The vitrification agent of claim 1 wherein the chromium-free passivation additive is Albritect CP 30.
3. The vitrification agent of claim 1, wherein the water is deionized water.
4. The vitrification agent according to claim 1, comprising the following components in parts by mass:
zinc oxide as control means 2.0 to 2.8;
carbon dioxide as control means, 4.5 to 5 parts;
0.8 to 1.2 parts of as further dried particles of fluotitanic acid as further dried particles;
as further control, fluozirconic acid, as further control, 6.5-7.2 parts;
sodium molybdate as dried particles, 2.5 to 3 parts;
as carbon dioxide as control means, citric acid as control means 1.6-1.9 parts;
(ii) tartaric acid, as further defined as inorganic particles, 3.2-3.5 parts;
as little as carbon and carbon black, as less than or equal to 2.4 parts to 2.8 parts;
0.32 to 0.4 parts of chromium-free passivation additive as control particles;
as water, carbon, and carbon black.
5. The vitrification agent according to claim 4, characterized by comprising the following components in parts by mass:
as carbon dioxide as carbon and carbon dioxide;
4.7 parts of nitric acid as dried particles as control layer;
as control means, fluotitanic acid, as control means 1.1 parts;
as further dried, and as further dried, and as further dried;
sodium molybdate as dried particles as control, 2.8 parts;
as further dried, carbon dioxide and carbon dioxide as dried, as further dried, as dried, etc. 1.7 parts;
as control means, tartaric acid, as control means, 3.4 parts;
as dried and dried fluoboric acid, as dried and dried, etc. 2.6 parts;
0.34 parts of chromium-free passivation additive as control particles;
as further dried water, carbon dioxide as control means 74.16.
6. A method for preparing a vitrification agent, characterized in that the vitrification agent is the vitrification agent as set forth in any one of claims 1 to 5, and the method for preparing the vitrification agent comprises the steps of:
adding part of water into zinc oxide, and mixing to obtain a zinc oxide suspension;
adding nitric acid, citric acid and tartaric acid into the zinc oxide suspension, and carrying out first mixing operation to obtain a first mixture;
adding fluozirconic acid, fluotitanic acid, fluoboric acid, sodium molybdate and a chromium-free passivation additive into the first mixture, and performing a second mixing operation to obtain a second mixture;
and adding the rest water into the second mixture, and performing third mixing operation to obtain the vitrification agent.
7. The preparation method of the vitrification agent according to claim 6, wherein the part of water is 1/5-1/3 of the total mass of water.
8. The preparation method of the vitrification agent according to claim 7, wherein the part of water is 1/4 of the total mass of water.
9. Use of the vitrification agent as set forth in any one of claims 1 to 5 in a panel for an outdoor unit of an air conditioner.
10. Use of the vitrification agent prepared by the method of any one of claims 6 to 8 in a panel for an outdoor unit of an air conditioner.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030151A (en) * | 2020-08-29 | 2020-12-04 | 合肥朗逸表面处理有限公司 | No-clean chromium-free conversion agent for continuous coil unit and preparation method thereof |
| CN113957424A (en) * | 2021-10-18 | 2022-01-21 | 烟台万华聚氨酯合成材料有限公司 | Passivation cleaning agent and preparation method and application thereof |
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| CN112030151A (en) * | 2020-08-29 | 2020-12-04 | 合肥朗逸表面处理有限公司 | No-clean chromium-free conversion agent for continuous coil unit and preparation method thereof |
| CN113957424A (en) * | 2021-10-18 | 2022-01-21 | 烟台万华聚氨酯合成材料有限公司 | Passivation cleaning agent and preparation method and application thereof |
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Application publication date: 20191224 |