Hollow ceramic oxide, salt spray corrosion resistant heat insulating coating, coating and preparation method thereof and building

Abstract

The present application provides a hollow ceramic oxide, a salt spray corrosion resistant thermal insulation coating, a coating and a preparation method thereof and a building, which relates to the field of salt spray corrosion resistant thermal insulation coatings. The raw materials of the hollow ceramic oxide include: an adsorbent, a metal compound, water and ethanol, the adsorbent includes one or more of yellow bamboo powder, bagasse powder and peanut shell powder, and the metal compound includes hydrated zirconium oxychloride and / or hydrated aluminum sulfate. The hollow ceramic oxide provided by the present application is an environmentally friendly material, which will not pollute the environment, and the free flowability of the hollow structure is excellent, which can be evenly dispersed in the material, and has an effective effect on the thermal insulation performance of the building surface.

Description

Technical Field

[0001] The present application relates to the field of salt spray corrosion resistant thermal insulation coatings, and in particular to a hollow ceramic oxide, salt spray corrosion resistant thermal insulation coating, coating, preparation method thereof and building. Background Art

[0002] With the development of economy and urbanization, the number of buildings has begun to grow rapidly. When the surface of a building is continuously radiated by sunlight, heat will accumulate, causing the indoor temperature to rise, thereby increasing the power consumption of refrigeration appliances and causing excessive power consumption. Energy conservation has become inevitable and a social consensus. In order to save electricity and reduce the use of refrigeration appliances, a heat-insulating coating needs to be applied on the surface of the building to effectively block the infrared radiation heat energy of the sun, so that the internal temperature is suitable and stable.

[0003] Thermal insulation coatings mainly refer to materials with insulating properties and shielding effects on heat flow. They are usually light, loose, and have low thermal conductivity. However, in different environments, the required thermal insulation coatings have different properties. In order to adapt to the marine atmosphere or seaside atmosphere, thermal insulation coatings need to be resistant to salt spray corrosion in order to provide long-term and stable thermal insulation effects for seaside buildings.

[0004] Corrosion resistance mainly refers to acid and alkali corrosion resistance, but the marine atmosphere environment is mainly salt spray corrosion. The corrosion principle is that the chloride ions in seawater have strong corrosion activity. The corrosion of the metal surface by salt spray is caused by the electrochemical reaction between the chloride ions penetrating the oxide layer and the protective layer on the metal surface and the internal metal. At the same time, the chloride ions contain a certain hydration energy, which is easily adsorbed in the pores and cracks on the metal surface to displace and replace the oxygen in the chloride layer, turning the insoluble oxide into a soluble chloride, and turning the passivated surface into an active surface, causing extremely bad adverse reactions to the product. Among them, the corrosion resistance introduced in patent CN107226659A is different from the salt spray corrosion resistance, and the existing corrosion-resistant heat-insulating coating is not suitable for use in the environment of marine atmosphere or seaside atmosphere. Although the existing nano-ceramic oxide has the effect of corrosion resistance, the preparation process is too long and complicated, and the nano-oxide in the coating raw material is difficult to disperse in the aqueous solution, easy to agglomerate, and has problems of uneven particle size and sedimentation. Summary of the invention

[0005] The purpose of the present application is to provide a hollow ceramic oxide, a salt spray corrosion resistant thermal insulation coating, a coating and a preparation method and a building thereof to solve the above-mentioned problems.

[0006] To achieve the above objectives, the first aspect of the present application provides a hollow ceramic oxide, the raw materials of which include: an adsorbent, a metal compound, water and ethanol;

[0007] The adsorbent includes one or more of yellow bamboo powder, bagasse powder and peanut shell powder;

[0008] The metal compound includes hydrated zirconium oxychloride and / or hydrated aluminum sulfate.

[0009] Optionally, 1000 g of the water and the ethanol correspond to 60 g-150 g of hydrated zirconium oxychloride, the mass ratio of the water to the ethanol is (2-6):1, and the mass ratio of the hydrated zirconium oxychloride to the adsorbent is (2-8):1.

[0010] The second aspect of the present application provides a method for preparing the hollow ceramic oxide, comprising:

[0011] The raw materials are mixed to obtain a mixed material, and the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product;

[0012] The hydrothermal adsorption product is dried and calcined in an oxygen-containing atmosphere to obtain the hollow ceramic oxide.

[0013] Optionally, the preparation method of the hollow ceramic oxide satisfies at least one of the following conditions:

[0014] A. The concentration of the metal compound in the mixed material is 60g / L-150g / L;

[0015] B. The temperature of the hydrothermal adsorption reaction is 130°C-180°C, and the time is greater than or equal to 8h;

[0016] C. The drying temperature is 60°C-120°C and the drying time is 12h-48h;

[0017] D. The calcination temperature is 450°C-800°C, the heating rate is 2°C / min-5°C / min, and the calcination time is at least 5 hours.

[0018] The third aspect of the present application provides a salt spray corrosion resistant thermal insulation coating, the raw materials of which, calculated with the total mass as 100%, include: 38wt%-45wt% of the hollow ceramic oxide or the hollow ceramic oxide prepared by the preparation method of the hollow ceramic oxide, 16wt%-27wt% of silica sol, 1wt%-4wt% of ethylene glycol ethyl ether and 30wt%-45wt% of water-based silicone acrylic emulsion.

[0019] The fourth aspect of the present application provides a method for preparing the salt spray corrosion resistant thermal insulation coating, comprising: mixing the hollow ceramic oxide, the silica sol, the ethylene glycol ethyl ether and the aqueous silicone acrylic emulsion to obtain the salt spray corrosion resistant thermal insulation coating.

[0020] The fifth aspect of the present application provides a coating, the raw materials of which include the salt spray corrosion resistant thermal insulation coating.

[0021] The sixth aspect of the present application provides a method for preparing the coating, wherein the salt spray corrosion resistant thermal insulation coating is disposed on a substrate and dried to obtain the coating.

[0022] Optionally, the substrate includes one or more of steel plates, glass plates, tiles and wood board materials.

[0023] A seventh aspect of the present application provides a building, the raw materials of which include the coating.

[0024] Compared with the prior art, the beneficial effects of this application include:

[0025] The hollow ceramic oxide provided in the present application has the advantages of low density, neutral pH value, thermal insulation, corrosion resistance and UV resistance, and is suitable for use as a raw material for corrosion-resistant thermal insulation materials. The hollow ceramic oxide has low density, lightweight, neutral pH value, is easily dispersed in aqueous solution, and has excellent free fluidity of the hollow structure, and can be evenly dispersed in the material. The hollow ceramic oxide is an environmentally friendly material and will not pollute the environment. The hollow ceramic oxide has excellent free fluidity and can be evenly dispersed in the material, which has an effective effect on the thermal insulation performance of the building surface.

[0026] The preparation method of hollow ceramic oxide provided in the present application is based on an adsorbent as the core under high temperature and high pressure. The adsorbent adsorbs hydrated zirconium oxychloride on its own surface to form a protective shell. After washing, separation, drying and calcination with water and ethanol, the adsorbent is decomposed at high temperature to form a hollow ceramic oxide from the hydrated zirconium oxychloride.

[0027] The salt spray corrosion resistant heat insulating coating provided by the present application has a synergistic effect among the components, wherein the silica sol can enhance the bonding strength of the coating, has a thickening effect, and improves the peeling strength of the coating; ethylene glycol ethyl ether has a film-forming effect, which can make the coating easy to apply and level, and can improve adhesion; the water-based silicone acrylic emulsion has an emulsifying ceramic powder and a defoaming effect, which can make the hollow ceramic material evenly dispersed in the coating, and will not be separated from the solvent by gravity. The defoaming effect is to remove bubbles when the hollow ceramic material and the solvent are stirred and mixed, and the coating is uniform; the hollow ceramic oxide plays the role of heat insulation, UV protection, and corrosion resistance.

[0028] The preparation method of the salt spray corrosion resistant thermal insulation coating provided in the present application has a simple preparation process.

[0029] The coating provided in the present application has the characteristics of thermal insulation, corrosion resistance and UV resistance, and the coating material is an environmentally friendly material and will not cause pollution to the environment.

[0030] The coating preparation method provided in the present application has a simple preparation process.

[0031] The building provided by this application can play a heat insulation role for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope of the present application.

[0033] Figure 1 This is a SEM image of the hollow ceramic oxide prepared in Example 1;

[0034] Figure 2 This is a schematic flow chart of the preparation method of the hollow ceramic oxide, salt spray corrosion resistant thermal insulation coating and coating provided in Example 1. DETAILED DESCRIPTION

[0035] As used herein:

[0036] "Prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0037] The conjunction "consisting of excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed-ended so that it does not include materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0038] When an amount, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values ​​and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted as including ranges "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5", etc. When a numerical range is described in this article, unless otherwise stated, the range is intended to include its end values ​​and all integers and fractions within the range.

[0039] In these examples, parts and percentages are by mass unless otherwise indicated.

[0040] "Parts by mass" refers to the basic unit of measurement for expressing the mass ratio of multiple components. 1 part can represent any unit mass, such as 1g or 2.689g. If we say that the mass of component A is a parts and the mass of component B is b parts, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it means that the mass of component A is aK and the mass of component B is bK (K is an arbitrary number, indicating a multiple factor). It should not be misunderstood that, unlike the mass parts, the sum of the mass of all components is not limited to 100 parts.

[0041] "And / or" is used to indicate that one or both of the stated situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0042] In a first aspect, the present application provides a hollow ceramic oxide, the raw materials of which include: an adsorbent, a metal compound, water and ethanol;

[0043] The adsorbent includes one or more of yellow bamboo powder, bagasse powder and peanut shell powder;

[0044] It should be noted that yellow bamboo powder, bagasse powder and peanut shell powder are natural substances and are easy to obtain.

[0045] The metal compound includes hydrated zirconium oxychloride and / or hydrated aluminum sulfate.

[0046] In some embodiments, 1000 g of the water and the ethanol corresponds to 60 g-150 g of hydrated zirconium oxychloride, the mass ratio of the water to the ethanol is (2-6):1, and the mass ratio of the hydrated zirconium oxychloride to the adsorbent is (2-8):1.

[0047] Optionally, 1000g of water and ethanol corresponds to 60g, 70g, 80g, 90g, 100g, 110g, 120g, 130g, 140g, 150g or any value between 60g and 150g of hydrated zirconium oxychloride, the mass ratio of water to ethanol can be 2:1, 3:1, 4:1, 5:1, 6:1 or any value between (2-6):1, and the mass ratio of hydrated zirconium oxychloride to adsorbent can be 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1 or any value between 2-8):1.

[0048] The second aspect of the present application provides a method for preparing the hollow ceramic oxide, comprising:

[0049] The raw materials are mixed to obtain a mixed material, and the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product;

[0050] The hydrothermal adsorption product is dried and calcined in an oxygen-containing atmosphere to obtain the hollow ceramic oxide.

[0051] In some embodiments, the method for preparing the hollow ceramic oxide satisfies at least one of the following conditions:

[0052] A. The concentration of the metal compound in the mixed material is 60g / L-150g / L;

[0053] Optionally, the concentration of the metal compound in the mixed material can be 60g / L, 70g / L, 80g / L, 90g / L, 100g / L, 110g / L, 120g / L, 130g / L, 140g / L, 150g / L or any value between 60g / L and 150g / L;

[0054] It should be noted that when the concentration of the metal compound in the mixed material is 60g / L-150g / L, it is convenient for industrial control.

[0055] B. The temperature of the hydrothermal adsorption reaction is 130°C-180°C, and the time is greater than or equal to 8h;

[0056] Optionally, the temperature of the hydrothermal adsorption reaction can be 130°C, 140°C, 150°C, 160°C, 170°C, 180°C or any value between 130°C and 180°C, and the time can be 8h, 9h, 10h, 11h, 12h, 15h, 20h, 24h, 48h or any value greater than or equal to 8h.

[0057] It should be noted that the reaction rate and generation rate are the highest when the temperature of the hydrothermal adsorption reaction is 130°C-180°C and the time is greater than or equal to 8h.

[0058] C. The drying temperature is 80°C-120°C and the drying time is 12h-48h;

[0059] Optionally, the drying temperature can be 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C or any value between 80°C and 120°C, and the drying time can be 12h, 13h, 14h, 15h, 16h, 17h, 18h, 19h, 20h, 22h, 24h, 26h, 28h, 30h, 32h, 34h, 36h, 38h, 40h, 42h, 44h, 46h, 48h or any value between 12h and 48h;

[0060] It should be noted that when the drying temperature is 60°C-120°C and the drying time is 12h-48h, the temperature rises from low temperature to high temperature, and the drying time is sufficient to allow water and ethanol to evaporate.

[0061] D. The calcination temperature is 450°C-800°C, the heating rate is 2°C / min-5°C / min, and the calcination time is at least 5 hours.

[0062] Optionally, the calcination temperature may be 450°C, 460°C, 470°C, 480°C, 490°C, 500°C, 510°C, 520°C, 530°C, 540°C, 550°C, 600°C, 620°C, 640°C, 660°C, 680°C, 700°C, 720°C, 740°C, 760°C, 780°C, 800°C or any value between 450°C and 800°C; the calcination heating rate may be 2°C / min, 3°C / min, 4°C / min, 5°C / min or any value between 2°C / min and 5°C / min; and the calcination time may be 5h, 6h, 7h, 8h, 9h, 10h or any value greater than or equal to 5h.

[0063] It should be noted that when the calcination heating rate is 2℃ / min-5℃ / min, the hollow sphere will exist stably. If the heating rate is too fast, the heat transfer will be too fast, and cracks may appear in the hollow structure, destroying the hollow structure.

[0064] The third aspect of the present application provides a salt spray corrosion resistant thermal insulation coating, wherein the raw materials thereof, calculated with the total mass as 100%, include: 38wt%-45wt% of the hollow ceramic oxide or the hollow ceramic oxide prepared by the preparation method of the hollow ceramic oxide, 16wt%-27wt% of silica sol, 1wt%-4wt% of ethylene glycol ethyl ether and 30wt%-45wt% of water-based silicone acrylic emulsion;

[0065] Optionally, the raw materials of the salt spray corrosion resistant heat insulation material are calculated with the total mass as 100%, the hollow ceramic oxide can be 38wt%, 39wt%, 40wt%, 41wt%, 42wt%, 43wt%, 44wt%, 45wt% or any value between 38wt% and 45wt%, and the silica sol can be 16wt%, 17wt%, 18wt%, 19wt%, 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt% or 16wt%. The ethylene glycol ether can be any value between 1wt%, 2wt%, 3wt%, 4wt% or any value between 1wt% and 4wt%, and the aqueous silicone acrylic emulsion can be 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, 40wt%, 41wt%, 42wt%, 43wt%, 44wt%, 45wt% or any value between 30wt% and 45wt%.

[0066] The fourth aspect of the present application provides a method for preparing the salt spray corrosion resistant thermal insulation coating, comprising: mixing the hollow ceramic oxide, the silica sol, the ethylene glycol ethyl ether and the aqueous silicone acrylic emulsion to obtain the salt spray corrosion resistant thermal insulation coating.

[0067] The fifth aspect of the present application provides a coating, the raw materials of which include the salt spray corrosion resistant thermal insulation coating.

[0068] The sixth aspect of the present application provides a method for preparing the coating, wherein the salt spray corrosion resistant thermal insulation coating is disposed on a substrate and dried to obtain the coating.

[0069] In some embodiments, the substrate includes one or more of a steel plate, a glass plate, a tile, and a wood board material.

[0070] A seventh aspect of the present application provides a building, the raw materials of which include the coating.

[0071] The embodiments of the present application will be described in detail below in conjunction with specific examples, but it will be appreciated by those skilled in the art that the following examples are only used to illustrate the present application and should not be considered as limiting the scope of the present application. If specific conditions are not specified in the examples, they are carried out according to normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0072] Example 1

[0073] In a first aspect of the present embodiment, a hollow ceramic oxide is provided, wherein the raw materials include: adsorbent yellow bamboo powder, metal compound hydrated zirconium oxychloride, water and ethanol, wherein 60g hydrated zirconium oxychloride and 30g yellow bamboo powder are added to 1000g solvent (containing 750g water and 250g ethanol);

[0074] The second aspect of the present embodiment provides a method for preparing a hollow ceramic oxide, wherein the raw materials of the hollow ceramic oxide are mixed to obtain a mixed material, the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product, the hydrothermal adsorption product is dried, and calcined in an oxygen-containing atmosphere to obtain a hollow ceramic oxide;

[0075] The concentration of the metal compound in the mixture is 60 g / L, the temperature of the hydrothermal adsorption reaction is 130°C, the time is 8 h, the drying temperature is 80°C, the time is 48 h, and the calcination temperature rise rate is 2°C / min. The SEM image of the prepared hollow ceramic oxide is as follows: Figure 1 shown.

[0076] A third aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating, wherein the raw materials thereof, calculated based on the total mass as 100%, include: 38wt% of the above hollow ceramic oxide, 16wt% of silica sol, 1wt% of ethylene glycol ethyl ether and 45wt% of water-based silicone acrylic emulsion.

[0077] A fourth aspect of the present embodiment provides a method for preparing a salt spray corrosion resistant thermal insulation coating, which is prepared by mixing the raw materials of the above-mentioned salt spray corrosion resistant thermal insulation material.

[0078] A fifth aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating and a preparation method thereof, wherein the salt spray corrosion resistant thermal insulation coating is sprayed on a steel plate and dried to obtain the salt spray corrosion resistant thermal insulation coating.

[0079] The specific preparation process is as follows: Figure 2 shown.

[0080] A sixth aspect of this embodiment provides a salt spray corrosion resistant thermal insulation building, which is located in a marine environment and whose raw materials include the above-mentioned salt spray corrosion resistant thermal insulation coating.

[0081] Example 2

[0082] In a first aspect, the present embodiment provides a hollow ceramic oxide, wherein the raw materials include: bagasse powder, hydrated aluminum sulfate, water and ethanol, wherein 60g of hydrated aluminum sulfate and 30g of bagasse powder are added to 1000g of solvent (containing 750g of water and 250g of ethanol);

[0083] The second aspect of the present embodiment provides a method for preparing a hollow ceramic oxide, wherein the raw materials of the hollow ceramic oxide are mixed to obtain a mixed material, the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product, the hydrothermal adsorption product is dried, and calcined in an oxygen-containing atmosphere to obtain a hollow ceramic oxide;

[0084] Among them, the concentration of metal compounds in the mixed material is 150g / L, the temperature of the hydrothermal adsorption reaction is 180°C, the time is 10h, the drying temperature is 120°C, the time is 12h, the calcination heating rate is 5°C / min, and the hollow ceramic oxide is prepared.

[0085] A third aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating, wherein the raw materials thereof, calculated based on the total mass as 100%, include: 40 wt % of the above hollow ceramic oxide, 27 wt % of silica sol, 3 wt % of ethylene glycol ethyl ether and 30 wt % of water-based silicone acrylic emulsion.

[0086] A fourth aspect of the present embodiment provides a method for preparing a salt spray corrosion resistant thermal insulation coating, which is prepared by mixing the raw materials of the above-mentioned salt spray corrosion resistant thermal insulation coating.

[0087] A fifth aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating and a preparation method thereof, wherein the salt spray corrosion resistant thermal insulation coating is sprayed on a steel plate and dried to obtain the salt spray corrosion resistant thermal insulation coating.

[0088] A sixth aspect of this embodiment provides a salt spray corrosion resistant thermal insulation building, the raw materials of which include the above-mentioned salt spray corrosion resistant thermal insulation coating.

[0089] Example 3

[0090] In a first aspect of the present embodiment, a hollow ceramic oxide is provided, wherein raw materials include: peanut shell powder, hydrated zirconium oxychloride, water and ethanol, wherein 100g of hydrated zirconium oxychloride and 50g of peanut shell powder are added to 1000g of solvent (containing 750g of water and 250g of ethanol);

[0091] The second aspect of the present embodiment provides a method for preparing a hollow ceramic oxide, wherein the raw materials of the hollow ceramic oxide are mixed to obtain a mixed material, the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product, the hydrothermal adsorption product is dried, and calcined in an oxygen-containing atmosphere to obtain a hollow ceramic oxide;

[0092] Among them, the concentration of metal compounds in the mixed material is 100g / L, the temperature of the hydrothermal adsorption reaction is 150°C, the time is 12h, the drying temperature is 100°C, the time is 24h, the calcination heating rate is 4°C / min, and the hollow ceramic oxide is prepared.

[0093] A third aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating, wherein the raw materials thereof, calculated based on the total mass as 100%, include: 41 wt% of the above-mentioned hollow ceramic oxide, 20 wt% of silica sol, 4 wt% of ethylene glycol ethyl ether and 35 wt% of water-based silicone acrylic emulsion.

[0094] A fourth aspect of the present embodiment provides a method for preparing a salt spray corrosion resistant thermal insulation coating, which is prepared by mixing the raw materials of the above-mentioned salt spray corrosion resistant thermal insulation coating.

[0095] A fifth aspect of the present embodiment provides a salt spray corrosion resistant thermal insulation coating and a preparation method thereof, wherein the salt spray corrosion resistant thermal insulation coating is sprayed on a steel plate and dried to obtain the salt spray corrosion resistant thermal insulation coating.

[0096] A sixth aspect of this embodiment provides a salt spray corrosion resistant thermal insulation building, the raw materials of which include the above-mentioned salt spray corrosion resistant thermal insulation coating.

[0097] Comparative Example 1

[0098] This comparative example provides a ceramic oxide, a heat insulating material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that no adsorbent is added in this comparative example.

[0099] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0100] Comparative Example 2

[0101] This comparative example provides a ceramic oxide, a heat insulating material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that the adsorbent in this comparative example is wheat germ powder.

[0102] The other conditions of this comparative example are consistent with those of the embodiment and will not be described in detail here.

[0103] Comparative Example 3

[0104] This comparative example provides a ceramic oxide, a heat insulating material, a coating, a preparation method thereof, and a building, which is different from Example 1 in that the adsorbent in this comparative example is polyacrylamide.

[0105] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0106] Comparative Example 4

[0107] This comparative example provides a ceramic oxide, a heat insulating material, a coating, a preparation method thereof, and a building, which is different from Example 1 in that the metal compound in this comparative example is titanium dioxide.

[0108] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0109] Comparative Example 5

[0110] This comparative example provides a ceramic oxide, a thermal insulation material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that the raw materials of the thermal insulation material of this comparative example do not contain silica sol.

[0111] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0112] Comparative Example 6

[0113] This comparative example provides a ceramic oxide, a thermal insulation material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that the raw materials of the thermal insulation material of this comparative example do not contain water-based silicone acrylic emulsion.

[0114] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0115] Comparative Example 7

[0116] This comparative example provides a ceramic oxide, a thermal insulation material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that the raw materials of the thermal insulation material of this comparative example do not contain ethylene glycol ether.

[0117] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0118] Comparative Example 8

[0119] This comparative example provides a ceramic oxide, a thermal insulation material, a coating, a preparation method thereof, and a building. The difference from Example 1 is that the thermal insulation material provided in this comparative example comprises raw materials including 30wt% of hollow ceramic oxide, 10wt% of silica sol, 10wt% of ethylene glycol ethyl ether, and 50wt% of aqueous silicone acrylic emulsion.

[0120] The other conditions of this comparative example are the same as those of Example 1 and will not be described in detail here.

[0121] Salt spray corrosion is a common and most destructive type of corrosion. The salt spray here refers to the chloride atmosphere, and its main corrosive component is the chloride salt in the ocean. The artificial simulated salt spray environment test uses a test equipment "salt spray test chamber" with a certain volume space. In its volume space, the paint is sprayed on the steel plate by artificial methods to participate in the experiment, creating a salt spray environment to assess the product's salt spray corrosion resistance performance quality.

[0122] Different criteria for evaluating test results may be used, for example:

[0123] a) Appearance after testing;

[0124] b) Appearance after removing surface corrosion products;

[0125] c) Corrosion defects (such as pitting, cracks, blistering, rust or the extent of rust spread at scratches on the organic coating, etc.);

[0126] d) the time when corrosion begins to occur;

[0127] e) quality changes;

[0128] f) microscopic morphological changes;

[0129] g) Changes in mechanical properties.

[0130] The thermal insulation performance test method is: through two different methods, infrared thermometer and thermocouple connected to temperature recorder, to test the temperature of the metal substrate of the sample, the temperature change curve of the metal substrate of the sample with different coating thickness, and analyze the test results in combination with the working conditions of the coating.

[0131] The coatings prepared in the above examples and comparative examples were subjected to salt spray resistance and thermal insulation performance tests.

[0132] Salt spray corrosion test refers to GB / T 10215-2021.

[0133] The thermal insulation test is: simulate a glass sun room and conduct a thermal insulation performance test (same fully enclosed glass space, same brand and same power heater, same thermometer, same glass), the ambient temperature is 20℃, the heater temperature rises to 40℃ and maintains for 30 minutes, the ambient temperature in the glass box is monitored, the thermal insulation test result is the heater temperature minus the ambient temperature in the glass box, the larger the thermal insulation test result (temperature difference), the better the thermal insulation performance.

[0134] The specific test results are shown in Table 1.

[0135] Table 1 Salt spray resistance and thermal insulation performance test

[0136]

[0137]

[0138]

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0140] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. The information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present application and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A salt spray corrosion resistant thermal insulation coating, characterized in that: The raw materials thereof, calculated based on the total mass as 100%, include: 38wt%-45wt% of hollow ceramic oxide, 16wt%-27wt% of silica sol, 1wt%-4wt% of ethylene glycol ethyl ether and 30wt%-45wt% of water-based silicone acrylic emulsion; The raw materials of the hollow ceramic oxide include: adsorbent, metal compound, water and ethanol; The adsorbent includes one or more of yellow bamboo powder, bagasse powder and peanut shell powder; The metal compound includes hydrated zirconium oxychloride and / or hydrated aluminum sulfate; 1000g of the water and the ethanol corresponds to 60g-150g of hydrated zirconium oxychloride, the mass ratio of the water to the ethanol is (2-6):1, and the mass ratio of the hydrated zirconium oxychloride to the adsorbent is (2-8):

1.

2. A method for preparing the salt spray corrosion resistant thermal insulation coating according to claim 1, characterized in that: include: The hollow ceramic oxide, the silica sol, the ethylene glycol ethyl ether and the water-based silicone acrylic emulsion are mixed to obtain the salt spray corrosion resistant thermal insulation coating; The preparation method of the hollow ceramic oxide comprises: The raw materials are mixed to obtain a mixed material, and the mixed material is subjected to a hydrothermal adsorption reaction to obtain a hydrothermal adsorption product; The hydrothermal adsorption product is dried and calcined in an oxygen-containing atmosphere to obtain the hollow ceramic oxide.

3. The method for preparing the salt spray corrosion resistant thermal insulation coating according to claim 2, characterized in that: The concentration of the metal compound in the mixed material is 60g / L-150g / L; the temperature of the hydrothermal adsorption reaction is 130℃-180℃, and the time is greater than or equal to 8h; the temperature of the drying is 60℃-120℃, and the time is 12h-48h; the temperature of the roasting is 450℃-800℃, the heating rate is 2℃ / min-5℃ / min, and the roasting time is at least 5h.

4. A coating, characterized in that: The raw materials include the salt spray corrosion resistant heat insulation coating as claimed in claim 1.

5. A method for preparing the coating according to claim 4, characterized in that: The salt spray corrosion resistant heat insulating coating is arranged on a substrate and dried to obtain the coating.

6. The method for preparing the coating according to claim 5, characterized in that: The substrate includes one of a steel plate, a glass plate, a tile and a wood board.

7. A building, characterized in that: Comprising the coating according to claim 4.

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