Corrosion and wear resistant self-cleaning insulating shingle surface membrane material and method of making

Abstract

The application discloses a kind of corrosion-resistant wear-resistant self-cleaning heat insulation tile surface diaphragm material and preparation method thereof;Preparation raw materials of heat insulation tile surface diaphragm material include the following components: polyether ether ketone fine powder 100 parts, polytetrafluoroethylene fine powder 10-20 parts, glass fiber 20-40 parts, modified silica aerogel powder 5-10 parts, crystallization nucleating agent 0.1-1 parts, lubricating aid 0.1-1 parts.This heat insulation tile surface diaphragm material, with polyether ether ketone as matrix material, polyether ether ketone has excellent temperature resistance, wear resistance, chemical corrosion resistance, ultraviolet resistance and self-lubricating property, at the same time, polytetrafluoroethylene fine powder is introduced into polyether ether ketone matrix, further improving the wear resistance of diaphragm material;At the same time, polytetrafluoroethylene also reduces the hydrophilicity of diaphragm material, and the introduced modified silica aerogel material surface is subjected to hydrophobic treatment;Both synergistic effect, construct hydrophobic micro-nano structure in diaphragm, give heat insulation tile surface good self-cleaning performance.

Description

Technical Field

[0001] This invention relates to the field of heat insulation tile surface materials, and in particular to a corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile surface membrane material. Background Technology

[0002] Aluminum alloy heat insulation tiles are a type of building material that combines the strength and heat insulation performance of metal materials. The existing aluminum alloy heat insulation tiles can be found in Chinese utility model patent CN221187715U, which is named composite heat insulation tile and was authorized on June 21, 2024. The above-mentioned composite heat insulation tile has a first polymer layer and a first heat insulation material layer on the outer layer. The first polymer layer and the first heat insulation material layer can give the heat insulation tile good decorative properties, corrosion resistance and heat insulation properties.

[0003] However, in harsh environments, such as extreme high-temperature environments, high-altitude areas, chemical industrial parks, coastal environments, and severe wind and sand environments, aluminum alloy heat insulation tiles are easily contaminated and corroded by domestic sewage, dust, organic dyes, mold, and microorganisms. These pollutants can easily adhere to the exterior surfaces of high-rise buildings, bridges, and other structures, affecting the aesthetics of the buildings. At the same time, long-term corrosion from pollutants can affect the durability and functionality of the buildings, greatly increasing the cost of cleaning and maintaining them. In addition, in severe wind and sand environments, such as the northwest region of my country, which often faces sandstorms, the sand and gravel in the air can easily damage the surface coating of the aluminum alloy heat insulation tiles.

[0004] Existing heat insulation tiles still have shortcomings in terms of corrosion resistance, wear resistance, and self-cleaning properties. Therefore, it is necessary to develop heat insulation tile surface membrane materials with better corrosion resistance, wear resistance, and self-cleaning properties. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a heat insulation tile surface membrane material with better corrosion resistance, wear resistance and self-cleaning performance.

[0006] Another objective of this invention is to provide a method for preparing a corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material.

[0007] The objective of this invention is achieved as follows:

[0008] A corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material, characterized in that the raw materials for preparing the heat-insulating tile surface membrane material include the following components:

[0009] 100 parts of fine polyetheretherketone powder

[0010] 10-20 parts of fine polytetrafluoroethylene powder

[0011] 20-40 parts glass fiber

[0012] 5-10 parts of modified silica aerogel powder

[0013] 0.1-1 part of crystallizing nucleating agent

[0014] Lubricant 0.1-1 part.

[0015] This corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile surface membrane material uses polyetheretherketone (PEEK) as the matrix material. PEEK possesses excellent temperature resistance, wear resistance, chemical corrosion resistance, UV resistance, and self-lubricating properties, meeting the requirements for product use in harsh environments (such as extreme high temperatures, windy and sandy environments in Northwest China, chemical industrial parks with severe corrosive gases, and high-altitude areas); thus, it significantly improves the environmental adaptability of the heat insulation tile. Simultaneously, the introduction of polytetrafluoroethylene (PTFE) fine powder into the PEEK matrix further enhances the wear resistance of the membrane material. PTFE also reduces the hydrophilicity of the membrane material, and the introduced modified silica aerogel material undergoes a hydrophobic treatment. The synergistic effect of these two materials constructs a hydrophobic micro-nano structure within the membrane, improving the overall hydrophobicity of the membrane and giving the heat insulation tile surface excellent self-cleaning properties. Furthermore, the introduced modified silica aerogel material can significantly improve the temperature barrier properties of the membrane material, thus significantly enhancing the heat insulation performance of the heat insulation tile surface.

[0016] The objective of this invention can also be achieved by the following technical measures:

[0017] Specifically, the particle size of the polytetrafluoroethylene fine powder is 1-20 μm.

[0018] Specifically, the glass fiber is a short-cut fiber with a diameter of 9-13 μm and an aspect ratio of 20.

[0019] Specifically, the modified silica aerogel powder is a fluorine-modified aerogel powder with a particle size of 5-50 nm.

[0020] Specifically, the nucleating agent is one of talc, titanium dioxide, or boron nitride, and the lubricating agent is one of calcium stearate or ethylene bis-stearamide.

[0021] Another object of the present invention is achieved as follows:

[0022] A method for preparing a corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material, characterized by comprising the following steps:

[0023] S1, firstly, fine powder of polyetheretherketone, fine powder of polytetrafluoroethylene, glass fiber, modified silica aerogel powder, crystallizing nucleating agent and lubricating agent are added to a high-speed mixer according to their respective proportions and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0024] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0025] Specifically, in step S1, the preparation method of the modified silica aerogel powder includes the following steps:

[0026] Step 1: Add 5g of silica aerogel powder to 32g of deionized water and stir to disperse;

[0027] Step 2: Dissolve 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane in 100g of anhydrous ethanol and stir until fully dissolved;

[0028] Step 3: After thoroughly mixing the solutions from Step 1 and Step 2, add 8g of ammonia solution and stir the mixture at room temperature for 24 hours.

[0029] Step 4: Centrifuge the solution obtained in Step 3, wash it three times with anhydrous ethanol solution, and then dry it in a vacuum oven at 80°C for 24 hours to obtain modified silica aerogel powder.

[0030] Specifically, in step S1, the extrusion temperature of the single-screw extruder is controlled at 370-390℃, and the extrusion speed is 2.0-2.5 mm / s.

[0031] Specifically, in step S2, the extrusion temperature of the extruder of the extrusion casting machine is controlled at 380-420℃, the extruder speed of the extrusion casting machine is 20-60 r / min, the speed of the casting roller on the extrusion casting machine is 2-10 m / min, and the temperature of the casting roller on the extrusion casting machine is controlled below 30℃.

[0032] The beneficial effects of this invention are as follows:

[0033] (1) This corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile surface membrane material uses polyether ether ketone as the matrix material. Polyether ether ketone has excellent temperature resistance, wear resistance, chemical corrosion resistance, UV resistance and self-lubrication, which meets the requirements of the product in harsh environments (such as extreme high temperature weather, northwest wind and sand environment, chemical industrial parks with severe corrosive gases and high altitude areas, etc.); that is, it significantly improves the environmental adaptability of heat insulation tiles.

[0034] (2) At the same time, polytetrafluoroethylene fine powder was introduced into the polyetheretherketone matrix, which further improved the wear resistance of the membrane material; at the same time, polytetrafluoroethylene also reduced the hydrophilicity of the membrane material, and the surface of the introduced modified silica aerogel material was hydrophobically treated; the two worked together to construct a hydrophobic micro-nano structure in the membrane, which improved the overall hydrophobicity of the membrane and gave the heat insulation tile surface good self-cleaning properties.

[0035] (3) Furthermore, the introduced modified silica aerogel material can significantly improve the temperature barrier performance of the membrane material, that is, significantly improve the heat insulation performance of the heat insulation tile surface. Attached Figure Description

[0036] Figure 1 This is a process flow diagram of the preparation method of the corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material of the present invention.

[0037] Figure 2 This is a process flow diagram of the preparation method of modified silica aerogel powder in this invention. Detailed Implementation

[0038] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0039] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0040] Example 1, combined with Figure 1 and Figure 2 As shown, a method for preparing a corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material is characterized by the following steps:

[0041] S1, firstly, 100 parts of polyetheretherketone fine powder, 10 parts of polytetrafluoroethylene fine powder, 20 parts of glass fiber, 5 parts of modified silica aerogel powder, 0.2 parts of talc powder and 0.2 parts of calcium stearate are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0042] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0043] As a specific embodiment, the polyetheretherketone fine powder is G-series-770G PEEK pure resin particles from Zhongyan Polymer Materials Co., Ltd.

[0044] As a specific embodiment, the modified silica aerogel powder is a fluorine-modified aerogel powder with a particle size of 5-50 nm; the preparation method of the modified silica aerogel powder includes the following steps:

[0045] Step 1: Add 5g of silica aerogel powder to 32g of deionized water and stir to disperse;

[0046] Step 2: Dissolve 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane in 100g of anhydrous ethanol and stir until fully dissolved;

[0047] Step 3: After thoroughly mixing the solutions from Step 1 and Step 2, add 8g of ammonia solution and stir the mixture at room temperature for 24 hours.

[0048] Step 4: Centrifuge the solution obtained in Step 3, wash it three times with anhydrous ethanol solution, and then dry it in a vacuum oven at 80°C for 24 hours to obtain modified silica aerogel powder.

[0049] As a specific embodiment, the particle size of the polytetrafluoroethylene fine powder is 1-20 μm; the fine powder is generally spherical, and the particle size is the diameter of the sphere.

[0050] As a specific embodiment, the glass fiber is a short-cut fiber with a diameter of 9-13 μm and an aspect ratio of 20, where the aspect ratio is the ratio of length to diameter.

[0051] More specifically, in step S1, the extrusion temperature of the single-screw extruder is controlled at 370-390℃, and the extrusion speed is 2.0-2.5 mm / s; the drying operation in step S1 can be carried out in a conventional drying oven.

[0052] More specifically, in step S2, the extrusion temperature of the extruder is controlled at 380-420℃, the extruder speed is 20-60 r / min, the speed of the casting rollers on the extruder is 2-10 m / min, and the temperature of the casting rollers on the extruder is controlled below 30℃.

[0053] More specifically, the oven is a constant temperature oven, the extruder on the extrusion casting machine is also a single-screw extruder, specifically a screw extruder from Guangzhou Putong Experimental Analytical Instrument Co., Ltd., model SJ-4525; the high-speed mixer is a high-speed mixer from Guangzhou Putong Experimental Analytical Instrument Co., Ltd., model SHR-10A; and the extrusion casting machine is a high-speed mixer from Guangzhou Putong Experimental Analytical Instrument Co., Ltd., model XH-432-3.

[0054] Example 2 is similar to the preparation method in Example 1, except that the specific products of the crystallizing nucleating agent and the lubricating agent are different, and the proportions of each component are also different. It includes the following steps:

[0055] S1, firstly, 100 parts of polyetheretherketone fine powder, 15 parts of polytetrafluoroethylene fine powder, 24 parts of glass fiber, 7 parts of modified silica aerogel powder, 0.5 parts of titanium dioxide and 0.2 parts of calcium stearate are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0056] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0057] Example 3 is similar to the preparation method in Example 1, except that the specific products of the crystallizing nucleating agent and the lubricating agent are different, and the proportions of each component are also different. It includes the following steps:

[0058] S1, firstly, 100 parts of polyetheretherketone fine powder, 20 parts of polytetrafluoroethylene fine powder, 28 parts of glass fiber, 8 parts of modified silica aerogel powder, 0.7 parts of titanium dioxide and 0.4 parts of calcium stearate are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0059] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0060] Example 4 is similar to the preparation method in Example 1, except that the specific products of the crystallizing nucleating agent and the lubricating agent are different, and the proportions of each component are also different. It includes the following steps:

[0061] S1, firstly, 100 parts of polyetheretherketone fine powder, 18 parts of polytetrafluoroethylene fine powder, 34 parts of glass fiber, 10 parts of modified silica aerogel powder, 0.9 parts of boron nitride and 0.6 parts of ethylene bis-stearamide are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0062] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0063] Example 5 is similar to the preparation method in Example 1, except that the specific products of the crystallizing nucleating agent and the lubricating agent are different, and the proportions of each component are also different. It includes the following steps:

[0064] S1, firstly, 100 parts of polyetheretherketone fine powder, 16 parts of polytetrafluoroethylene fine powder, 36 parts of glass fiber, 7 parts of modified silica aerogel powder, 0.5 parts of titanium dioxide and 0.8 parts of ethylene bis-stearamide are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0065] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0066] Example 6 is similar to the preparation method in Example 1, except that the specific products of the crystallizing nucleating agent and the lubricating agent are different, and the proportions of each component are also different. It includes the following steps:

[0067] S1, firstly, 100 parts of polyetheretherketone fine powder, 14 parts of polytetrafluoroethylene fine powder, 26 parts of glass fiber, 5 parts of modified silica aerogel powder, 0.7 parts of talc powder and 0.4 parts of ethylene bis-stearamide are added to a high-speed mixer and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules.

[0068] S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

[0069] Comparative Example 1: The preparation method of this example is similar to that of Example 1, except that polytetrafluoroethylene fine powder, glass fiber and modified silica aerogel powder are not added. All other steps are the same as those in Example 1.

[0070] Comparative Example 2: The preparation method of this example is similar to that of Example 2, except that glass fiber and modified silica aerogel powder were not added, while the other steps are the same as those in Example 2.

[0071] Comparative Example 3 is similar to the preparation method of Example 1, except that no modified silica aerogel powder was added, and all other steps are the same as in Example 1.

[0072] Comparative Example 4 is similar to the preparation method of Example 1, except that polytetrafluoroethylene fine powder was not added, and all other steps are the same as in Example 1.

[0073] Performance testing:

[0074] 1. The tensile strength and elongation at break in the table above are mechanical properties, representing whether the diaphragm on the surface of the heat insulation tile can be formed and whether it can be stable during use; the tensile strength, elongation at break and other mechanical properties are tested using an Instron 5982 mechanical testing machine, with a tensile strength of 1 mm / s for the plastic.

[0075] 2. The glass transition temperature is a thermal property that represents the temperature that the diaphragm on the surface of the heat insulation tile can withstand. The glass transition temperature is tested using a differential scanning calorimeter (DSC 250) at a heating rate of 2°C / min.

[0076] 3. The coefficient of friction and wear volume are tribological properties, representing the wear resistance of the diaphragm on the surface of the heat insulation tile;

[0077] Friction coefficient test method: The test was conducted using an Rtec friction and wear tester (MCR550). The ball-disc mode was selected. The friction pair consisted of GCr15 bearing steel balls. During the test, the diaphragm was attached to a stainless steel disk. The test load was 5N, the frequency was 6Hz, the test length was 6mm, and the test time was 15min. The value at the end of the test was taken as the final friction coefficient.

[0078] The test method for wear volume is as follows: the wear morphology is observed using a white light interferometer, and the wear volume is calculated.

[0079] 4. Thermal conductivity is the thermal conductivity property, representing the temperature barrier capability of the diaphragm on the surface of the heat insulation tile; thermal conductivity is measured using a thermal reflectance thermal conductivity meter (NANO TR).

[0080] 5. The water contact angle is the hydrophilicity and oleophilicity of the membrane surface, representing the antifouling and self-cleaning properties of the membrane on the heat insulation tile surface; the water contact angle is measured using a dynamic contact angle meter (OCA25).

[0081] The corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane materials prepared in Examples 1 to 6 and Comparative Examples 1 to 4 were subjected to performance tests according to the test methods described in 1-7 above. The test results are shown in the table below.

[0082] Tensile strength (MPa) Elongation at break (%) <![CDATA[Glass transition temperature ( o °C)]]> coefficient of friction <![CDATA[Wear volume mm 3 / (N·m)]]> Thermal conductivity (W / (m·K)) Water contact angle (°) Example 1 45.3 26.5 148 0.132 <![CDATA[3.24*10 -6 ]]> 0.132 151 Example 2 47.2 28.7 152 0.154 <![CDATA[1.79*10 -6 ]]> 0.119 153 Example 3 53.6 29.4 156 0.143 <![CDATA[5.12*10 -6 ]]> 0.187 154 Example 4 54.4 32.1 153 0.114 <![CDATA[1.34*10 -6 ]]> 0.096 151 Example 5 56.8 29.7 149 0.151 <![CDATA[2.15*10 -6 ]]> 0.127 154 Example 6 51.9 26.8 157 0.135 <![CDATA[1.96*10 -6 ]]> 0.156 152 Comparative Example 1 37.6 40.2 145 0.334 <![CDATA[7.31*10 -6 ]]> 0.28 84 Comparative Example 2 48.6 29.3 151 0.285 <![CDATA[4.67*10 -6 ]]> 0.25 132 Comparative Example 3 46.4 27.8 153 0.164 <![CDATA[2.91*10 -6 ]]> 0.42 135 Comparative Example 4 51.2 29.3 151 0.227 <![CDATA[8.12*10 -6 ]]> 0.21 97

[0083] in conclusion:

[0084] Combining the data in the table for Example 1 and Comparative Example 1, it can be seen that the compounding of polytetrafluoroethylene fine powder, glass fiber, and modified silica aerogel powder gives the prepared heat insulation tile surface membrane material more stable mechanical properties, better wear resistance, better temperature barrier ability, better anti-fouling performance, and self-cleaning performance.

[0085] Combining the data in the table for Example 2 and Comparative Example 2, it can be seen that the combination of glass fiber and modified silica aerogel powder gives the prepared heat insulation tile surface membrane material better wear resistance, better temperature barrier ability, better anti-fouling performance, and self-cleaning performance.

[0086] Combining the data in the table for Example 1 and Comparative Example 3, it can be seen that the addition of modified silica aerogel powder further improves the temperature barrier properties, anti-fouling properties, and self-cleaning properties of the membrane material on the surface of the heat insulation tile.

[0087] Combining the data in the table, it can be seen that the addition of polytetrafluoroethylene fine powder further improves the wear resistance, anti-fouling performance, and self-cleaning performance of the membrane material on the surface of the heat insulation tile.

[0088] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material, characterized in that, The raw materials for preparing the heat-insulating tile surface membrane material include the following components: 100 parts of fine polyetheretherketone powder 10-20 parts of fine polytetrafluoroethylene powder 20-40 parts glass fiber 5-10 parts of modified silica aerogel powder 0.1-1 part of crystallizing nucleating agent Lubricant 0.1-1 part; The preparation method of the modified silica aerogel powder includes the following steps: Step 1: Add 5g of silica aerogel powder to 32g of deionized water and stir to disperse; Step 2: Dissolve 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane in 100g of anhydrous ethanol and stir until fully dissolved; Step 3: After thoroughly mixing the solutions from Step 1 and Step 2, add 8g of ammonia solution and stir the mixture at room temperature for 24 hours. Step 4: Centrifuge the solution obtained in Step 3, wash it three times with anhydrous ethanol solution, and then dry it in a vacuum oven at 80°C for 24 hours to obtain modified silica aerogel powder.

2. The corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 1, characterized in that, The particle size of the polytetrafluoroethylene fine powder is 1-20 μm.

3. The corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 1, characterized in that, The glass fiber is a short-cut fiber with a diameter of 9-13 μm and an aspect ratio of 20.

4. The corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 1, characterized in that, The modified silica aerogel powder is a fluorine-modified aerogel powder with a particle size of 5-50 nm.

5. The corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 1, characterized in that, The nucleating agent is one of talc, titanium dioxide, or boron nitride, and the lubricating agent is one of calcium stearate or ethylene bis-stearamide.

6. A method for preparing a corrosion-resistant, wear-resistant, self-cleaning heat-insulating tile surface membrane material as described in any one of claims 1-5, characterized in that, Includes the following steps: S1, firstly, fine powder of polyetheretherketone, fine powder of polytetrafluoroethylene, glass fiber, modified silica aerogel powder, crystallizing nucleating agent and lubricating agent are added to a high-speed mixer according to their respective proportions and mixed. The mixed material is dried at 120°C for 2 hours, and then melt-blended and extruded through a single screw extruder to obtain granules. S2, the above granules are added into the extrusion casting machine, heated to form a melt, and then extruded and plasticized by the extruder on the extrusion casting machine. The extruded and plasticized material flows onto the casting roller on the extrusion casting machine, and is then drawn, cut, and wound to obtain the corrosion-resistant, wear-resistant, and self-cleaning heat insulation tile film material.

7. The method for preparing the corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 6, characterized in that, In step S1, the extrusion temperature of the single screw extruder is controlled at 370-390℃, and the extrusion speed is 2.0-2.5 mm / s.

8. The method for preparing the corrosion-resistant, wear-resistant, and self-cleaning heat-insulating tile surface membrane material according to claim 6, characterized in that, S2 In the process, the extrusion temperature of the extruder is controlled at 380-420℃, the extruder speed is 20-60 r / min, the speed of the casting rollers on the extruder is 2-10 m / min, and the temperature of the casting rollers on the extruder is controlled below 30℃.

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