CN110294946B - Nano high-temperature-resistant coating for metal surface and preparation method and application thereof - Google Patents
Nano high-temperature-resistant coating for metal surface and preparation method and application thereof Download PDFInfo
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- CN110294946B CN110294946B CN201910589320.8A CN201910589320A CN110294946B CN 110294946 B CN110294946 B CN 110294946B CN 201910589320 A CN201910589320 A CN 201910589320A CN 110294946 B CN110294946 B CN 110294946B
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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 nano high-temperature-resistant coating for metal surfaces, a preparation method and application thereof, wherein the nano high-temperature-resistant coating comprises a component A and a component B, and the component A comprises the following components in parts by mass, calculated by taking the total parts by mass of the component A and the component B as 100 parts: 25-45 parts of silica sol, 10-20 parts of nano silicon dioxide dispersion liquid, 1-2 parts of glacial acetic acid and 0-1 part of defoaming agent; the component B comprises the following components: 10-30 parts of high-temperature resistant pigment, 5-10 parts of ethanol, 5-10 parts of glass powder, 1-2 parts of dispersing agent, 1-2 parts of anti-settling agent, 0-1 part of thickening agent and 20-40 parts of methyl siloxane. The nano high-temperature-resistant coating for the metal surface has the advantages of good adhesion of a formed coating on the metal surface, good flexibility, excellent comprehensive corrosion resistance, high temperature resistance and non-flammability.
Description
Technical Field
The invention relates to a high-temperature-resistant coating, in particular to a nano 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.
How to provide a coating for metal protection with excellent performance is an urgent problem to be solved.
Disclosure of Invention
The invention provides a nano high-temperature-resistant coating for a metal surface, which overcomes the defects in the prior art, and comprises two components A and B, and is characterized in that the component A comprises the following components in parts by mass, calculated by taking the total parts by mass of the two components A and B as 100 parts:
25-45 parts of silica sol;
10-20 parts of nano silicon dioxide dispersion liquid;
1-2 parts of glacial acetic acid;
0-1 part of a defoaming agent;
the component B comprises the following components:
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;
0-1 part of thickening agent;
20-40 parts of methyl 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 glacial acetic acid is analytically pure.
In the preferred technical scheme, the defoaming agent is a water-oil universal defoaming agent; the weight fraction of the defoaming agent is 0.3-0.8; preferably, the weight fraction is 0.6 parts.
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 a preferred technical scheme, the thickener is a water-oil universal thickener; the weight fraction of the thickening agent is 0.3-0.8; preferably, the weight fraction is 0.5 parts.
In a preferred technical scheme, the methyl siloxane is selected from one or a combination of more than two of methyl methoxy silane, methyl ethoxy silane and methyl propoxy silane; preferably, the weight fraction of the methyl 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 nano high temperature resistant coating for a metal surface, the method comprising the steps of:
(1) adjusting the silica sol to the required pH value by using glacial acetic acid, adding the nano silicon dioxide dispersion liquid and the defoaming agent, and uniformly stirring to form a component A;
(2) mixing dispersant and methyl siloxane, adding ethanol, adding anti-settling agent, thickening agent, glass powder and high temperature resistant pigment while stirring, filling nitrogen gas, sealing, and grinding to fineness less than or equal to 10 microns to form component B;
(3) mixing the component A and the component B according to the proportion of 1: 1, mixing to obtain the nano high-temperature-resistant coating for the metal surface.
In the preferred technical scheme, the weight fraction of the glacial acetic acid 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 nano high-temperature-resistant coating for the metal surface in the high-temperature protection treatment of the metal.
In a preferred technical scheme, the method for the metal high-temperature protection treatment comprises the steps of filtering the nano high-temperature resistant coating for the metal surface by using a 200-mesh filter screen, spraying the nano high-temperature resistant coating on a flat plate of SUS410 which is sandblasted to SA2.5 level, and forming a coating film of the nano high-temperature resistant coating for the metal surface after self-drying for 2 hours at normal temperature.
Another object of the present invention is to provide a method for protecting a metal substrate, comprising: coating the nano high-temperature-resistant coating for the metal surface on the surface of the metal substrate, and curing the coating to form a film.
In a preferred technical scheme, the metal base material comprises various stainless steels and temperature-resistant steels; preferably, in order to ensure the thickness uniformity of the coating film, the coating mode is spraying.
In the preferred technical scheme, the nano high-temperature-resistant coating for the metal surface is cured to form a film at normal temperature.
The invention relates to a coating technology, in particular to a nano high-temperature-resistant coating for a metal surface. The coating formed by the nano high-temperature-resistant coating for the metal surface can play a role in sealing and protecting a metal substrate.
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, good flexibility and excellent comprehensive corrosion 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 a Nyquist curve of the nano high temperature resistant coating of example 1 of the present invention soaked in 5.0 wt% NaCl solution for different time, wherein the coating film thickness after curing is 15-20 μm, and the substrate is Q235 carbon steel.
FIG. 2 is a Bode curve of the nano high temperature resistant coating of example 1 of the present invention soaked in 5.0 wt% NaCl solution for different time periods, wherein the coating thickness after curing is 15-20 μm, and the substrate is Q235 carbon steel.
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 relates to a nano high-temperature-resistant coating for a metal surface, which comprises two components A and B, and is characterized in that the component A comprises the following components in parts by mass based on 100 parts of the total parts by mass of the two components A and B:
25-45 parts of silica sol;
10-20 parts of nano silicon dioxide dispersion liquid;
1-2 parts of glacial acetic acid;
0-1 part of a defoaming agent;
the component B comprises the following components:
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;
0-1 part of thickening agent;
20-40 parts of methyl siloxane.
The invention discloses a preparation method of a nano high-temperature-resistant coating for a metal surface, which is characterized by comprising the following steps of:
(1) adjusting the pH value of the silica sol to 2-4 by using glacial acetic acid, adding the nano silicon dioxide dispersion liquid and the defoaming agent, and uniformly stirring to form a component A;
(2) mixing dispersant and methyl siloxane, adding ethanol, adding anti-settling agent, thickening agent, glass powder and high temperature resistant pigment while stirring, filling nitrogen gas, sealing, and grinding to fineness less than or equal to 10 microns to form component B;
(3) mixing the component A and the component B according to the proportion of 1: 1, mixing to obtain the nano high-temperature-resistant coating for the metal surface.
The application of the nano 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 coating film is self-dried for 2 hours at normal temperature.
The coating formed by the nano 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 graves, pH 8.0), pH 3.5 adjusted with 1g of glacial acetic acid, 10g of nanosilica dispersion (from shaoxingda chemical) were added, stirred homogeneously and 0.5g of antifoam (from gas chemical) were added with stirring. Stirring for 15 minutes to obtain the component A. Another 30g of methyl siloxane (from shin-Etsu chemical), 1g of dispersant (from OMG), 6g of ethanol, stirring, 10g of glass powder (from Xianyanghe, 2000 mesh), 1g of anti-settling agent (from Degussa, R972), 0.5g of thickener (from Hunan Huate, trade name 140W), 10 parts of cobalt green pigment (from Utsuku), in a sample tank 1: 1 adding zirconium beads, filling nitrogen and grinding until the fineness is less than or equal to 10 microns to obtain the component B. Mixing A, B components according to a mass ratio of 1: 1, stirring at a high speed for 30 minutes, cooling to normal temperature, immediately spraying on SUS410 steel plate which is sand-blasted to Sa2.5 level and has a film thickness of 15-25 micrometers, naturally drying for 120 minutes, wherein the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray resistance of the formed coating are shown in Table 1.
Example 2
42.5g of silica sol (from graves, pH 8.0), pH 3 adjusted with 2g of glacial acetic acid, 11g of nanosilica dispersion (from shaoxingda chemical) were added, stirred homogeneously and 1g of antifoam (from gasohol chemical) were added with stirring. Stirring for 15 minutes to obtain the component A. Another 20g of methyl siloxane (ex shin-Etsu chemical), 1g of dispersant (ex OMG), 5g of ethanol, stirring, 5g of glass powder (ex Suiyang Heng, 2000 mesh), 1.5g of anti-settling agent (ex Degussa, R972), 1g of thickener (ex Huzhou Huate, trade name 140W), 10 parts of copper-chromium black pigment (ex Ussukoku), in a sample tank 1: 1 adding zirconium beads, filling nitrogen and grinding until the fineness is less than or equal to 10 microns to obtain the component B. Mixing A, B components according to a mass ratio of 1: 1, stirring at a high speed for 30 minutes, cooling to normal temperature, immediately spraying on SUS410 steel plate which is sand-blasted to Sa2.5 level and has a film thickness of 15-25 micrometers, naturally drying for 120 minutes, wherein the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray resistance of the formed coating are shown in Table 1.
Example 3
38g of silica sol (from graves, pH 8.0), pH 3.5 adjusted with 2g of glacial acetic acid, 10g of nanosilica dispersion (from shaoxingda chemical) were added, stirred homogeneously and 0.5g of antifoam (from gas chemical) were added with stirring. Stirring for 15 minutes to obtain the component A. Another 20g of methyl siloxane (ex shin-Etsu chemical), 2g of dispersant (ex OMG), 8g of ethanol, stirred well, 7g of glass powder (ex Suiyang Heng, 2000 mesh), 1.5g of anti-settling agent (ex Degussa, R972), 1g of thickener (ex Huzhou Huate, trade name 140W), 10 parts of cobalt green pigment (ex Ussukoku), in a sample tank 1: 1 adding zirconium beads, filling nitrogen and grinding until the fineness is less than or equal to 10 microns to obtain the component B. Mixing A, B components according to a mass ratio of 1: 1, stirring at a high speed for 30 minutes, cooling to normal temperature, immediately spraying on SUS410 steel plate which is sand-blasted to Sa2.5 level and has a film thickness of 15-25 micrometers, naturally drying for 120 minutes, wherein the adhesive force, hardness, impact resistance, high temperature quenching resistance and salt spray resistance of the formed coating are shown in Table 1.
Comparative example 1 using a commercially available two-lion brand W61-650 high temperature resistant coating, the adhesion, hardness, impact resistance, high temperature quenching resistance and salt spray resistance of the coating formed therefrom are shown in table 1.
TABLE 1 comprehensive physical properties of nano high-temperature coating for metal surface in inventive examples 1-3 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 (11)
1. Use of a nano refractory coating for metal surfaces in a metal high temperature protection treatment comprising: filtering the coating by using a 200-mesh filter screen, spraying the filtered coating on a flat plate of SUS410 which is sandblasted to SA2.5 level, and air-drying the coated coating for 2 hours at normal temperature to form a coating film; the coating comprises two components A and B, wherein the component A comprises the following components in parts by mass, calculated by taking the total parts by mass of the two components A and B as 100 parts:
25-45 parts of silica sol with the pH value of 8.0 purchased from Graves company, and the pH value is adjusted to 3-3.5;
10-20 parts of nano silicon dioxide dispersion liquid, wherein the particle size of the nano silicon dioxide is 50nm-200 nm;
1-2 parts of glacial acetic acid for adjusting the pH value to 3-3.5;
0-1 part of defoaming agent from gas chemistry;
the component B comprises the following components:
10-30 parts of high-temperature resistant pigment;
5-10 parts of ethanol;
5-10 parts of 2000-mesh glass powder purchased from Xianyanghe;
1-2 parts of dispersant from OMG company;
1-2 parts of R972 anti-settling agent purchased from Degussa company;
0-1 part of thickener available from Huzhou Walter under the designation 140W;
from 20 to 40 parts of methylsiloxane, believed to be more chemical.
2. Use according to claim 1, characterized in that the silica sol is present in a proportion of 35 to 45 parts by weight.
3. Use according to claim 1, characterized in that the nanosilica dispersion is present in an amount of 12 to 18 parts by weight.
4. Use according to claim 1, characterized in that the ethanol is present in a proportion of 6 to 8 parts by weight.
5. Use according to claim 1, characterized in that the defoamer is present in a quantity of 0.3 to 0.8 parts by weight.
6. Use according to claim 1, characterized in that the dispersant is present in a weight fraction of 1.2 to 1.8 parts.
7. Use according to claim 1, characterized in that the anti-settling agent is present in an amount of 1.2 to 1.8 parts by weight.
8. Use according to claim 1, characterized in that the thickener is present in a weight fraction of 0.3 to 0.8 parts.
9. The use according to claim 1, 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; and/or the high-temperature resistant pigment accounts for 12-28 parts by weight.
10. Use according to claim 1, characterized in that the parts by weight of methylsiloxane are between 25 and 35 parts.
11. Use according to claim 1, characterized in that the preparation method of the coating comprises the following steps:
(1) adjusting the pH value of the silica sol to 3-3.5 by using glacial acetic acid, adding the nano silicon dioxide dispersion liquid and the defoaming agent, and uniformly stirring to form a component A;
(2) mixing dispersant and methyl siloxane, adding ethanol, adding anti-settling agent, thickening agent, glass powder and high temperature resistant pigment while stirring, filling nitrogen gas, sealing, and grinding to fineness less than or equal to 10 microns to form component B;
(3) mixing the component A and the component B according to the proportion of 1: 1, mixing to obtain the nano high-temperature-resistant coating for the metal surface.
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| CN110294947B (en) * | 2019-07-02 | 2021-12-03 | 中国科学院宁波材料技术与工程研究所 | High-temperature-resistant coating for metal surface and preparation method and application thereof |
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| CN102675935A (en) * | 2012-05-17 | 2012-09-19 | 珠海市氟特科技有限公司 | Ceramic crystal coating for metal surfaces and preparation method thereof |
| 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 |
| CN109021726A (en) * | 2018-06-06 | 2018-12-18 | 无锡大塘复合材料有限公司 | A kind of thermally conductive wear-resisting non-sticking lining and preparation method thereof easy to clean |
| CN109749622A (en) * | 2018-12-28 | 2019-05-14 | 徐淑玲 | Aqueous high-temperature-resistant non-viscous paint and preparation method thereof |
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