CN110294947B - High-temperature-resistant coating for metal surface and preparation method and application thereof - Google Patents
High-temperature-resistant coating for metal surface and preparation method and application thereof Download PDFInfo
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- CN110294947B CN110294947B CN201910592085.XA CN201910592085A CN110294947B CN 110294947 B CN110294947 B CN 110294947B CN 201910592085 A CN201910592085 A CN 201910592085A CN 110294947 B CN110294947 B CN 110294947B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- C—CHEMISTRY; METALLURGY
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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Abstract
The invention discloses a high-temperature-resistant coating for a metal surface, and a preparation method and application thereof. The coating formed by the high-temperature-resistant coating on the metal surface has good adhesion on the metal surface, good flexibility and high hardness, and has high-temperature resistance and non-flammability.
Description
Technical Field
The invention relates to a high-temperature-resistant coating, in particular to a high-temperature-resistant coating for a metal surface, a preparation method and application thereof, and belongs to the field of metal high-temperature protection.
Background
With the development of industrial technology, especially military industry and aerospace technology, more and more special metal materials are used in high temperature work, such as high temperature steam pipelines of oil refineries and power plants, shells and nozzles of aircraft engines, etc. As the temperature gradually increases, the heat resistance stability and thermal oxidation performance of various metals greatly decrease, and at this time, it is urgently needed to develop a coating capable of protecting the metal materials under the high temperature condition. The coating not only needs to have the color protection and identification characteristics of a common coating, but also can resist high temperature of over 600 ℃ for a long time and has certain corrosion resistance.
At present, phosphate coatings and other high-temperature resistant coatings are mainly cured at high temperature and packaged in multiple components. How to provide a metal protection coating which can be cured at normal temperature and has excellent performance is a problem to be solved urgently.
Disclosure of Invention
The invention provides a high-temperature-resistant coating for a metal surface, which overcomes the defects in the prior art.
In a preferred technical scheme, the high-temperature resistant coating component for the metal surface comprises: silica sol, nano-silica dispersion liquid, an acidic medium, ethanol, siloxane, high-temperature resistant pigment, glass powder, a dispersing agent, a defoaming agent, an anti-settling agent, attapulgite and the like.
In a preferred technical scheme, the high-temperature resistant coating for the metal surface comprises the following components in parts by weight, based on 100 parts by weight:
20-45 parts of silica sol;
10-20 parts of nano silicon dioxide dispersion liquid;
1-2 parts of an acidic medium;
10-30 parts of high-temperature resistant pigment;
5-10 parts of ethanol;
5-10 parts of glass powder;
1-2 parts of a dispersant;
1-2 parts of an anti-settling agent;
2-4 parts of attapulgite;
20-35 parts of siloxane.
In the preferred technical scheme, the pH value of the silica sol is 6.5-8.5; preferably, the pH is 7.5 to 8.0.
In the preferred technical scheme, the weight fraction of the silica sol is 35-45 parts; preferably, the weight fraction is 40 parts.
In a preferred technical scheme, the particle size of the nano silicon dioxide dispersion liquid is 50nm-500 nm; preferably, the particle size is 50nm to 200 nm.
In a preferred technical scheme, the weight fraction of the nano silicon dioxide dispersion liquid is 12-18 parts; preferably, the weight fraction is 15 parts.
In a preferred technical scheme, the acidic medium is selected from one or a combination of more than two of glacial acetic acid, citric acid, hydrochloric acid and dilute nitric acid.
In a preferred technical scheme, the high-temperature resistant pigment is selected from one or a combination of more than two of titanium dioxide, copper chromium black, cobalt green, cobalt blue and titanium nickel yellow; preferably, the weight fraction of the high-temperature resistant pigment is 12-28 parts.
In a preferred technical scheme, the ethanol is analytically pure; the weight fraction of the ethanol is 6-8 parts; preferably, the weight fraction is 7 parts.
In the preferred technical scheme, the particle size of the glass powder is 2000 meshes, and the melting temperature is 700 ℃.
In the preferred technical scheme, the weight fraction of the glass powder is 6-8 parts; preferably, the weight fraction is 7 parts.
In a preferred technical scheme, the dispersant is a water-oil universal dispersant; the weight fraction of the dispersant is 1.2-1.8 parts; preferably, the weight fraction is 1.5 parts.
In the preferred technical scheme, the anti-settling agent is a water-oil universal anti-settling agent; the weight fraction of the anti-settling agent is 1.2-1.8 parts; preferably, the weight fraction is 1.5 parts.
In the preferred technical scheme, the attapulgite is modified by hydrophile, the length is 10-20 microns, and the diameter is 0.2-0.5 microns; the weight fraction of the attapulgite is 2.5-3.5 parts; preferably, the weight fraction is 3 parts.
In a preferred technical scheme, the siloxane is selected from one or a combination of more than two of methyl methoxy silane, methyl ethoxy silane and methyl propoxy silane; the weight fraction of the siloxane is 25-35 parts; preferably, the weight fraction is 30 parts.
Another object of the present invention is to provide a method for preparing a high temperature resistant coating for metal surfaces, the method comprising the steps of:
(1) adjusting the pH value of the silica sol to 2-4 by using an acidic medium, adding the nano silicon dioxide dispersion liquid, and uniformly stirring to obtain a first mixture;
(2) adding siloxane, starting a stirrer and a reflux condenser tube, setting the reaction temperature to 80 ℃, dropwise adding the first mixture, reacting for 8 hours after dropwise adding, cooling to room temperature, adding ethanol into the product, and uniformly shaking to obtain a second mixture;
(3) taking the second mixture, adding a dispersing agent, an anti-settling agent, attapulgite, glass powder and a high-temperature-resistant pigment while stirring, and mixing according to the weight ratio of 1: 1 adding zirconium beads and grinding to the fineness of less than or equal to 10 microns to obtain the high-temperature resistant coating for the metal surface.
In a preferable technical scheme, the weight fraction of the acidic medium is 1-2 parts, and the pH value of the silica sol is adjusted to 2-4; preferably, the pH of the silica sol is adjusted to 3.
The invention also aims to provide the application of the high-temperature-resistant coating for the metal surface in the high-temperature protection treatment of the metal.
In the preferred technical scheme, the high-temperature resistant coating for the metal surface is filtered by a 200-mesh filter screen, sprayed on a flat plate of SUS410 which is sandblasted to SA2.5 level, and self-dried at normal temperature for 2 hours to form a coating film of the high-temperature resistant coating for the metal surface; preferably, the metal includes various stainless steels and temperature-resistant steels.
The invention relates to a coating technology, in particular to a high-temperature-resistant coating for a metal surface. Through formula optimization, the formed coating has the advantages of good adhesion on the metal surface, good flexibility, high hardness, high temperature resistance, non-combustibility and the like.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) the coating overcomes the defects of the prior art, and can resist the high temperature of 600-1400 ℃ for a long time;
(2) the coating (paint film) formed by the paint has good adhesion with a base material, high hardness and excellent cold and hot alternation resistance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an open circuit potential curve measured after immersion of the high temperature resistant coating of example 1 of the present invention in a 3.5 wt% NaCl solution at 25 ℃ for various times after immersion in a high temperature furnace at 800 ℃ for 96 hours, a: coating/304 stainless steel; 304 stainless steel; the thickness of the refractory coating was 40 μm.
FIG. 2 is an impedance spectrum of the high temperature resistant coating of example 2 of the present invention measured after being immersed in 3.5 wt% NaCl solution at 25 ℃ for 4 days after being heated in a high temperature furnace at 800 ℃ for 96 hours, a: coating/304 stainless steel; 304 stainless steel; the thickness of the refractory coating was 40 μm.
Detailed Description
The present invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed embodiment.
The aspects, embodiments, features and examples of the present invention should be considered as illustrative in all respects and not intended to be limiting of the invention, the scope of which is defined only by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.
The use of headings and chapters in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the disclosure.
Throughout this specification, where a composition is described as having, containing, or comprising specific components or where a process is described as having, containing, or comprising specific process steps, it is contemplated that the composition of the present teachings also consist essentially of, or consist of, the recited components, and the process of the present teachings also consist essentially of, or consist of, the recited process steps.
Unless specifically stated otherwise, use of the terms "comprising", "including", "having" or "having" is generally to be understood as open-ended and not limiting.
The use of the singular herein includes the plural (and vice versa) unless specifically stated otherwise. Furthermore, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. In addition, where the term "about" is used before a quantity, the present teachings also include the particular quantity itself unless specifically stated otherwise.
It should be understood that the order of steps or the order in which particular actions are performed is not critical, so long as the teachings of the invention remain operable. Further, two or more steps or actions may be performed simultaneously.
The invention provides a high-temperature-resistant coating for a metal surface, which is characterized by comprising the following components in parts by weight of 100 parts:
20-45 parts of silica sol;
10-20 parts of nano silicon dioxide dispersion liquid;
1-2 parts of an acidic medium;
10-30 parts of high-temperature resistant pigment;
5-10 parts of ethanol;
5-10 parts of glass powder;
1-2 parts of a dispersant;
1-2 parts of an anti-settling agent;
2-4 parts of attapulgite;
20-35 parts of siloxane.
The preparation method of the high-temperature resistant coating for the metal surface comprises the following steps:
(1) adjusting the pH value of the silica sol to 2-4 by using an acidic medium, adding the nano silicon dioxide dispersion liquid, and uniformly stirring to obtain a first mixture;
(2) adding siloxane, starting a stirrer and a reflux condenser tube, setting the reaction temperature to 80 ℃, dropwise adding the first mixture, reacting for 8 hours after dropwise adding, cooling to room temperature, adding ethanol into the product, and uniformly shaking to obtain a second mixture;
(3) taking the second mixture, adding a dispersing agent, an anti-settling agent, attapulgite, glass powder and a high-temperature-resistant pigment while stirring, and mixing according to the weight ratio of 1: 1 adding zirconium beads and grinding to the fineness of less than or equal to 10 microns to obtain the high-temperature resistant coating for the metal surface.
The application of the high-temperature-resistant coating for the metal surface in the high-temperature protection treatment of the metal comprises the steps of filtering the high-temperature-resistant coating for the metal surface by using a 200-mesh filter screen, spraying the filtered high-temperature-resistant coating on an SUS410 flat plate which is sandblasted to SA2.5 grade, and forming a coating film of the high-temperature-resistant coating for the metal surface after the high-temperature-resistant coating is self-dried for 2 hours at normal temperature.
In order to ensure the thickness uniformity of the coating film, the coating mode can be spraying.
The coating formed by the high-temperature resistant coating for the metal surface can play a role in sealing and protecting a metal substrate.
Example 1
30g of silica sol (from Grace, pH 8.0) was adjusted to pH 3.0 with 1g of dilute nitric acid in a beaker, and 10g of nanosilicon dioxide dispersion (from Shaoxing chemical) was added and stirred well to give a first mixture. Adding 20g of siloxane (purchased from Dow Corning company) into a three-neck flask, starting a stirrer and a reflux condenser tube, setting the reaction temperature to be 80 ℃, slowly dropwise adding the first mixture, reacting for 8 hours after dropwise adding, cooling to room temperature, adding 5g of ethanol into the product, and shaking up properly to obtain a second mixture. The second mixture was stirred with 2g of dispersant (ex luobu), 1g of anti-settling agent (ex degussa, R972), 3g of attapulgite (ex noro technologies, usa), 10g of glass powder (ex suzu harmony, 2000 mesh) and 18g of cobalt blue pigment (ex rutabagaku) in the following proportions 1: 1, adding zirconium beads, grinding to the fineness of less than or equal to 10 microns to obtain the single-component self-drying high-temperature-resistant coating for the metal surface. The one-component self-drying high-temperature-resistant coating for the metal surface is filtered by a 200-mesh filter screen, sprayed on an SUS410 flat plate which is sandblasted to SA2.5 level, the film thickness is 15-25 micrometers, and after the coating is self-dried for 2 hours at normal temperature, a coating film of the one-component self-drying high-temperature-resistant coating for the metal surface is formed, and the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray performance of the coating formed by the coating film are shown in table 1. The high temperature resistant coating of example 1 was directly quenched 10 times at 800 ℃ to give a coating with an impact resistance of 50cm (both forward and reverse).
Example 2
43g of silica sol (from Grace, pH 8.0) was adjusted to pH 3.0 with 2g of dilute hydrochloric acid in a beaker, and 10g of nanosilicon dioxide dispersion (from Shaoxing chemical) were added and stirred well to give a first mixture. Adding 20g of siloxane (purchased from Dow Corning company) into a three-neck flask, starting a stirrer and a reflux condenser tube, setting the reaction temperature to 80 ℃, slowly dropwise adding the first mixture, reacting for 8 hours after dropwise adding, cooling to room temperature, adding 5g of ethanol into the product, and properly shaking up to obtain a second mixture. The second mixture was stirred with 1g of dispersant (ex luobu), 2g of anti-settling agent (ex degussa, R972), 2g of attapulgite (ex noro technologies, usa), 5g of glass powder (ex suzu harmony, 2000 mesh) and 10g of cobalt blue pigment (ex rutabagaku) in the following ratio of 1: 1, adding zirconium beads, grinding to the fineness of less than or equal to 10 microns to obtain the single-component self-drying high-temperature-resistant coating for the metal surface. The one-component self-drying high-temperature-resistant coating for the metal surface is filtered by a 200-mesh filter screen, sprayed on an SUS410 flat plate which is sandblasted to SA2.5 level, the film thickness is 15-25 micrometers, and after the coating is self-dried for 2 hours at normal temperature, a coating film of the one-component self-drying high-temperature-resistant coating for the metal surface is formed, and the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray performance of the coating formed by the coating film are shown in table 1.
Example 3
32g of silica sol (from Grace, pH 8.0) was adjusted to pH 3.0 with 2g of glacial acetic acid in a beaker, and 12g of nanosilicon dioxide dispersion (from Shaoxing chemical) were added and stirred well to give a first mixture. Adding 22g of siloxane (purchased from Dow Corning company) into a three-neck flask, starting a stirrer and a reflux condenser tube, setting the reaction temperature to 80 ℃, slowly dropwise adding the first mixture, reacting for 8 hours after dropwise adding, cooling to room temperature, adding 10g of ethanol into the product, and properly shaking up to obtain a second mixture. The second mixture was stirred with 1.5g of dispersant (from luobo ru), 1.5g of anti-settling agent (from degussa, R972), 4g of attapulgite (from nano european technology, usa), 5g of glass powder (from shang yang yun he, 2000 mesh) and 10g of cobalt blue pigment (from turnip lake ku) in the following ratio of 1: 1, adding zirconium beads, grinding to the fineness of less than or equal to 10 microns to obtain the single-component self-drying high-temperature-resistant coating for the metal surface. The one-component self-drying high-temperature-resistant coating for the metal surface is filtered by a 200-mesh filter screen, sprayed on an SUS410 flat plate which is sandblasted to SA2.5 level, the film thickness is 15-25 micrometers, and after the coating is self-dried for 2 hours at normal temperature, a coating film of the one-component self-drying high-temperature-resistant coating for the metal surface is formed, and the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray performance of the coating formed by the coating film are shown in table 1.
Comparative example 1 using a commercially available paint, Shuangshi brand W61-550, the coating formed therefrom had adhesion, hardness, impact resistance, high temperature quenching resistance, and salt spray resistance as shown in table 1.
TABLE 1 comprehensive physical Properties of the one-component, self-drying, high temperature resistant coating for metal surfaces of examples 1-3 of the present invention and comparative example 1
In addition, the inventors of the present invention have also made experiments with other materials, process operations, and process conditions described in the present specification with reference to the above examples, and have obtained preferable results.
While the invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.
Claims (5)
1. The high-temperature-resistant coating for the metal surface is characterized by comprising the following components in parts by weight of 100:
35-45 parts of silica sol with the pH value of 8.0, wherein the silica sol is adjusted to the pH value of 3 when in use;
12-18 parts of nano silicon dioxide dispersion liquid, wherein the particle size of nano silicon dioxide in the nano silicon dioxide dispersion liquid is 50-200 nm;
1-2 parts of an acidic medium, wherein the acidic medium is one or a combination of more than two of glacial acetic acid, citric acid, hydrochloric acid and dilute nitric acid;
12-28 parts of high-temperature resistant pigment, wherein the high-temperature resistant pigment is selected from one or a combination of more than two of titanium dioxide, copper chromium black, cobalt green, cobalt blue and titanium nickel yellow;
6-8 parts of analytically pure ethanol;
6-8 parts of glass powder, wherein the particle size of the glass powder is 2000 meshes, and the melting temperature is 700 ℃;
1.2-1.8 parts of a dispersant, wherein the dispersant is a water-oil universal dispersant;
1.2-1.8 parts of R972 anti-settling agent;
2.5-3.5 parts of attapulgite, wherein the attapulgite is modified by hydrophile, the length is 10-20 microns, and the diameter is 0.2-0.5 micron;
25-35 parts of siloxane, wherein the siloxane is selected from one or a combination of more than two of methyl methoxy silane, methyl ethoxy silane and methyl propoxy silane;
mixing the components and grinding the components until the fineness of the components is less than or equal to 10 micrometers;
the high-temperature resistant coating can resist the high temperature of 600-1400 ℃ for a long time.
2. A method of preparing a high temperature resistant coating for metal surfaces according to claim 1, comprising the steps of:
(1) adjusting the pH value of the silica sol to 3 by using an acidic medium, adding the nano silicon dioxide dispersion liquid, and uniformly stirring to obtain a first mixture;
(2) adding siloxane, starting a stirrer and a reflux condenser tube, setting the reaction temperature to be 80 +/-2 ℃, dropwise adding the first mixture, reacting at the constant temperature of 80 ℃ for 8 hours after dropwise adding, cooling to room temperature, adding ethanol into the product, and uniformly shaking to obtain a second mixture;
(3) taking the second mixture, adding a dispersing agent, an anti-settling agent, attapulgite, glass powder and a high-temperature-resistant pigment while stirring, and mixing according to the weight ratio of 1: 1 adding zirconium beads and grinding to the fineness of less than or equal to 10 microns to obtain the high-temperature resistant coating for the metal surface.
3. Use of the refractory coating for metal surfaces according to claim 1 in the high-temperature protection treatment of metals.
4. Use according to claim 3, characterized in that it comprises: filtering the high-temperature-resistant coating for the metal surface by using a 200-mesh filter screen, spraying the filtered high-temperature-resistant coating on a flat plate of SUS410 which is sandblasted to SA2.5 level, and air-drying the coating for 2 hours at normal temperature to form a coating film of the high-temperature-resistant coating for the metal surface.
5. Use according to claim 4, characterized in that: the metal comprises stainless steel or temperature resistant steel.
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| CN105062156A (en) * | 2015-07-30 | 2015-11-18 | 无锡卡秀堡辉涂料有限公司 | Ceramic paint with antibacterial function and preparation method thereof |
| CN105331155A (en) * | 2015-11-30 | 2016-02-17 | 无锡大塘复合材料有限公司 | Anti-bacterial hard non-stick coating |
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