HIGH-TEMPERATURE RESISTANT, PEELABLE AND ANTI-CORROSION COATING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Abstract

A high-temperature resistant peelable anti-corrosion coating, a preparation method therefor and an application thereof are provided. The coating includes component A and component B; the component A includes film-forming substance, pigment and filler, auxiliary agent, and solvent A; the component B includes vulcanizing agent and solvent B; the component A includes the following components in parts by weight: 100 parts of film-forming substance; 25-55 parts of pigment and filler; 0.1-3 parts of adhesion modifier; 0.5-5 parts of auxiliary agent; 20-50 parts of solvent A; the component B includes the following components in parts by weight: 10-50 parts of vulcanizing agent; 100 parts of solvent B. The coating can be completely peeled off from the substrate after being subjected to a high temperature of 200 C. for 4 hours, without affecting the state of the substrate.

Claims

1. A high-temperature resistant, peelable and anti-corrosion coating, wherein the coating comprises component A and component B; the component A comprises film-forming substance, pigment and filler, auxiliary agent, and solvent A; the component B comprises vulcanizing agent and solvent B; the component A comprises the following components in parts by weight: TABLE-US-00013 the film-forming substance 100 parts by weight; the pigment and filler 25 to 55 parts by weight; the adhesion modifier 0.1 to 3 parts by weight; the auxiliary agent 0.5 to 5 parts by weight; the solvent A 20 to 50 parts by weight; the component B comprises the following components in parts by weight: the vulcanizing agent 10 to 50 parts by weight; the solvent B 100 parts by weight; a mass ratio of the component A and the component B is 100:(1-15); the film-forming substance is fluororubber; the adhesion modifier is a mixture of expandable microsphere and polytetrafluoroethylene micro powder, with a mass ratio of 10:(1-4); the expandable microsphere has a core-shell structure, with thermoplastic polymer as a shell and liquid alkane gas encapsulated inside; a diameter range of the expandable microsphere is 10-100 m.

2. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein: the component A comprises the following components in parts by weight: TABLE-US-00014 the film-forming substance 100 parts by weight; the pigment and filler 30 to 50 parts by weight; the adhesion modifier 0.5 to 2 parts by weight; the auxiliary agent 1 to 3 parts by weight; the solvent A 25 to 40 parts byG weight; the component B comprises the following components in parts by weight: the vulcanizing agent 15 to 40 parts by weight; the solvent B 100 parts by weight.

3. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein a mass ratio of the component A and the component B is 100:(2-10).

4. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein the pigment and filler comprises reinforcing filler and anticorrosive filler; the reinforcing filler is at least one of quartz powder, fumed silica, mica powder, mica flake, calcium carbonate, barium sulfate, titanium dioxide, kaolin, dolomite, wollastonite, carbon black, and phthalocyanine blue; the anticorrosive filler is at least one of talc powder, zinc oxide, zinc phosphate, and organic bentonite.

5. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein the auxiliary agent comprises wetting dispersant and antifungal agent.

6. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein the vulcanizing agent is at least one of bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane), hydroquinone, dicumyl peroxide, and 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane.

7. The high-temperature resistant, peelable and anti-corrosion coating according to claim 1, wherein: the solvent A is at least one of propylene glycol methyl ether acetate, xylene, and butyl acetate; the solvent B is at least one of propylene glycol methyl ether acetate, xylene, and butyl acetate.

8. A preparation method of the high-temperature resistant peelable anti-corrosion coating as according to claim 1, wherein the preparation method comprises: mixing the components of the component A according to the specified parts by weight to obtain the component A; mixing the components of the component B according to the specified parts by weight to obtain the component B, and mixing the component A and the component B according to the specified dosage to prepare the high-temperature resistant peelable anti-corrosion coating.

9. An application of the the high-temperature resistant peelable anti-corrosion coating according to claim 1 in protective coatings.

Description

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] Below is a specific description of the present disclosure based on specific embodiments. It is necessary to point out that the following embodiments are only used for further explanation of the present disclosure and cannot be understood as limiting the protection scope of the present disclosure. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present disclosure still fall within the protection scope of the present disclosure.

[0048] In various embodiments of the present disclosure, the film-forming substance, pigment and filler, solvent, auxiliary agent and other raw material are conventional commercially available products. The specific information is shown in Table 1:

TABLE-US-00005 TABLE 1 Model Number Raw material specification Manufacturer 1 Fluororubber L728A Zhejiang Fluorine Chemical New Material Co., Ltd. 2 Fluororubber 2602 Zhejiang Fluorine Chemical New Material Co., Ltd. 3 Fluororubber 228 Zhejiang Fluorine Chemical New Material Co., Ltd. 4 Fluororubber H228 Zhejiang Fluorine Chemical New Material Co., Ltd. 5 Quartz powder Industrial grade Anmi Anywhere New Materials Co., Ltd. 6 Fumed silica T-3000 Liaocheng sailike new material co. LTD 7 Mica powder Industrial grade Jiangxi KingPowder New Material Co., Ltd. 8 Mica flake Industrial grade Shijiazhuang Tengbang Mineral Products Co., Ltd. 9 Calcium carbonate Industrial grade Hebei Songshi Building Materials Co., Ltd. 10 Barium sulfate Industrial grade Jiangyin Guangyuan Micro-tiny Powder Co., Ltd. 11 Titanium dioxide HA120 Nanyang Hengxiang Chemical Products Co., Ltd. 12 Kaolin Industrial grade Lingshou County Baishun Mineral Products Co., Ltd. 13 Dolomite Industrial grade Shouxin Mineral Products Processing Plant, Pailou Town, Haicheng City 14 Wollastonite Industrial grade Shanghai Tianhan Mineral Technology Co., Ltd. 15 Carbon black LT043 Shanghai Lantu Chemical Co., Ltd. 16 Phthalocyanine LT156 Shanghai Lantu Chemical Co., Ltd. blue 17 Talcum powder Industrial grade Pingdu Zhaohui Fine Powder Co., Ltd 18 Zinc oxide Analytical pure Sinopharm Chemical Reagent Co., Ltd. 19 Zinc phosphate Analytical pure Sinopharm Chemical Reagent Co., Ltd. 20 Organic bentonite Industrial grade Ruitai Chemical Products Trading Company, Jinshui District, Zhengzhou City 21 Expandable 105D Foshan Jieheng New Materials Co., Ltd. microsphere 22 polytetrafluoroethy Industrial grade GuangZhou Shinshi Metallurgical and lene micro powder Chemical CO., LTD 23 Antifungal agent KEPUYIN-M27 Foshan Kepu Yin Biotechnology Co., Ltd. 24 Antifungal agent KEPUYIN-M23 Foshan Kepu Yin Biotechnology Co., Ltd. 25 Antifungal agent KEPUYIN- Foshan Kepu Yin Biotechnology Co., M002 Ltd. 26 Bisphenol AF (2,2- Analytical pure Sinopharm Chemical Reagent Co., Ltd. bis(4- hydroxyphenyl)hex afluoropropane) 27 Hydroquinone Analytical pure Sinopharm Chemical Reagent Co., Ltd. 28 Dicumyl peroxide Analytical pure Sinopharm Chemical Reagent Co., Ltd. 29 2,5-dimethyl-2,5- Analytical pure Sinopharm Chemical Reagent Co., Ltd. di(tert- butylperoxy)hexane 30 Propylene glycol Industrial grade Tianjin Fuyu Fine Chemical Co., Ltd. methyl ether acetate 31 Xylene Industrial grade Tianjin Fuyu Fine Chemical Co., Ltd. 32 Butyl acetate Industrial grade Tianjin Fuyu Fine Chemical Co., Ltd. 33 Wetting dispersant DS-F20 Dongguan DENSON New Materials Co., Ltd. 34 Wetting dispersant DS-F63 Dongguan DENSON New Materials Co., Ltd. 35 Wetting dispersant OT-75 Guangzhou Huixiang Chemical Co., Ltd. 36 Wetting dispersant KYC-919 Guangzhou Yangu Trading Co.,Ltd

Embodiment 1

[0049] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 100 parts of fluororubber L728A, 20 parts of fumed silica, 10 parts of quartz powder, 5 parts of mica flakes, 5 parts of talcum powder, 7 parts of zinc phosphate, 1 part of carbon black, 1 part of expandable microsphere, 0.2 parts of polytetrafluoroethylene micro powder, 1 part of antifungal agent KEPUYIN-M27, 1 part of DS-F20 wetting dispersant, and 34 parts of propylene glycol methyl ether acetate; in component B, 20 parts of bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) and 100 parts of propylene glycol methyl ether acetate.

[0050] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0051] S1: adding fluororubber L728A, fumed silica, quartz powder, mica flake, talcum powder, zinc phosphate, carbon black, polytetrafluoroethylene micro powder, and propylene glycol methyl ether acetate into a high-speed mixer and mixing evenly without agglomeration; [0052] S2: pouring the evenly mixed coating material into a basket mill and grinding the coating material to a fineness of 40 um; [0053] S3: adding expandable microsphere, antifungal agent, and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0054] S4: mixing bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) with propylene glycol methyl ether acetate evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0055] S5: mixing evenly 100 parts by weight of the component A with 10 parts by weight of the component B, applying by brush coating, air spraying or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours after coating, so as to obtain a high-temperature resistant, peelable and anti-corrosion coating.

[0056] Performance tests were conducted on the coating prepared in Embodiment 1. The elongation at break and the tensile strength at break of the coating were tested according to the GB/T 528-2009 standard, the water resistance of the coating was tested according to the GB/T 1733-1993 standard, the high-temperature resistance of the coating was tested according to the GB/T 1735-2009 standard, the fungus resistance of the coating was tested according to the GJB 150.10A-2009 standard, and the salt-fog test, of the coating was tested according to the GJB 150.11A-2009 standard. The test results are shown in Table 2:

TABLE-US-00006 TABLE 2 Number Experimental project Test result 1 coating film appearance black 2 tensile strength at break, MPa 8.2 3 elongation at break, % 430 4 water resistance test at the coating film is intact, 23 C. 2 C., 24 h without bubbles or peeling 5 high-temperature resistance the coating film is intact, test at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Embodiment 2

[0057] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 100 parts of fluororubber 2602, 20 parts of calcium carbonate, 5 parts of titanium dioxide, 10 parts of talcum powder, 0.5 parts of expandable microsphere, 0.2 parts of polytetrafluoroethylene micro powder, 1 part of mold antifungal agent KEPUYIN-M23, 0.5 parts of DS-F63 wetting dispersant, and 30 parts of propylene glycol methyl ether acetate; in component B, 30 parts of dicumyl peroxide (DCP) and 100 parts of xylene.

[0058] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0059] S1: adding fluororubber 2602, calcium carbonate, titanium dioxide, talcum powder, polytetrafluoroethylene micro powder, and propylene glycol methyl ether acetate into a high-speed mixer and mixing evenly without agglomeration; [0060] S2: pouring the evenly mixed coating material into a basket mill and grinding the coating material to a fineness of 40 m; [0061] S3: adding expandable microsphere, antifungal agent, and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0062] S4: mixing dicumyl peroxide (DCP) with xylene evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0063] S5: mixing 100 parts by weight of the component A with 3 parts by weight of the component B, applying by brush coating, air spraying or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours to a high-temperature resistant, peelable and anti-corrosion coating.

[0064] Performance tests were conducted on the coating prepared in Embodiment 2. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 3:

TABLE-US-00007 TABLE 3 Number Experimental project Test result 1 coating film appearance black 2 tensile strength at break, MPa 7.6 3 elongation at break, % 450 4 water resistance test at the coating film is intact, 23 C. 2 C., 24 h without bubbles or peeling 5 high-temperature resistance the coating film is intact, test at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./ 4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Embodiment 3

[0065] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 100 parts of fluororubber 228, 5 parts of fumed silica, 3 parts of barium sulfate, 5 parts of wollastonite, 7 parts of zinc phosphate, 10 parts of organic bentonite, 1.5 parts of expandable microsphere, 0.4 parts of polytetrafluoroethylene micro powder, 1 part of phthalocyanine blue, 0.5 parts of antifungal agent KEPUYIN-M002, 0.5 parts of DS-F63 wetting dispersant, and 40 parts of butyl acetate; in component B, 25 parts of bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) and 100 parts of xylene.

[0066] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0067] S1: adding fluororubber 228, fumed silica, barium sulfate, wollastonite, zinc phosphate, organic bentonite, polytetrafluoroethylene micro powder, phthalocyanine blue, and butyl acetate into a high-speed mixer and mixing evenly without agglomeration; [0068] S2: pouring the evenly mixed coating material into a basket mill and grinding the coating material to a fineness of 40 m; [0069] S3: adding expandable microsphere, antifungal agent, and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0070] S4: mixing bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) with xylene evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0071] S5: mixing 100 parts by weight of the component A with 3 parts by weight of the component B, applying by brush coating, air spraying or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours to a high-temperature resistant, peelable and anti-corrosion coating.

[0072] Performance tests were conducted on the coating prepared in Embodiment 3. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 4:

TABLE-US-00008 TABLE 4 Number Experimental project Test result 1 coating film appearance Blue 2 tensile strength at break, MPa 7.6 3 elongation at break, % 430 4 water resistance test at the coating film is intact, 23 C. 2 C., 24 h without bubbles or peeling 5 high-temperature resistance test the coating film is intact, at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Embodiment 4

[0073] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 50 parts of fluororubber H228, 50 parts of fluororubber 228, 10 parts of fumed silica, 7 parts of kaolin, 10 parts of talcum powder, 7 parts of organic bentonite, 1.4 parts of expandable microsphere, 0.4 parts of polytetrafluoroethylene micro powder, 1 part of OT-75 wetting dispersant, 0.7 parts of antifungal agent KEPUYIN-M27, and 25 parts of xylene; in component B, 15 parts of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (DBPMH) and 100 parts of butyl acetate.

[0074] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0075] S1: adding fluororubber H228, fluororubber 228, fumed silica, kaolin, talcum powder, organic bentonite, polytetrafluoroethylene micro powder, and xylene into a high-speed mixer and mixing evenly without agglomeration; [0076] S2: pouring the evenly mixed coating material into a basket mill and grinding it to a fineness of 40 m; [0077] S3: adding expandable microsphere, antifungal agent, and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0078] S4: mixing 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (DBPMH) with butyl acetate evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0079] S5: mixing 100 parts by weight of the component A with 5 parts by weight of the component B, applying by brush coating, air spraying, or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours to a high-temperature resistant, peelable and anti-corrosion coating.

[0080] Performance tests were conducted on the coating prepared in Embodiment 4. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 5:

TABLE-US-00009 TABLE 5 Number Experimental project Test result 1 coating film appearance white 2 tensile strength at break, MPa 7.7 3 elongation at break, % 463 4 water resistance test at the coating film is intact, 23 C = 2 C., 24 h without bubbles or peeling 5 high-temperature resistance test the coating film is intact, at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Embodiment 5

[0081] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 30 parts of fluororubber L728A, 70 parts of fluororubber H228, 10 parts of fumed silica, 10 parts of mica powder, 10 parts of dolomite, 10 parts of zinc oxide, 1.25 parts of expandable microsphere, 0.25 parts of polytetrafluoroethylene micro powder, 0.3 parts of KYC-919 wetting dispersant, 1 part of antifungal agent KEPUYIN-M23, and 40 parts of xylene; in component B, 20 parts of hydroquinone and 100 parts of propylene glycol methyl ether acetate.

[0082] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0083] S1: adding fluororubber L728A, fluororubber H228, fumed silica, mica powder, dolomite, zinc oxide, polytetrafluoroethylene micro powder, and xylene into a high-speed mixer and mixing evenly without agglomeration; [0084] S2: pouring the evenly mixed coating material into a basket mill and grinding it to a fineness of 40 m; [0085] S3: adding expandable microsphere, antifungal agent, and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0086] S4: mixing hydroquinone with propylene glycol methyl ether acetate evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0087] S5: mixing 100 parts by weight of the component A with 6 parts by weight of the component B, applying by brush coating, air spraying, or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours after coating, so as to obtain a high-temperature resistant, peelable and anti-corrosion coating.

[0088] Performance tests were conducted on the coating prepared in Embodiment 5. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 6:

TABLE-US-00010 TABLE 6 Number Experimental project Test result 1 coating film appearance white 2 tensile strength at break, MPa 7.2 3 elongation at break, % 482 4 water resistance test at the coating film is intact, 23 C. = 2 C., 24 h without bubbles or peeling 5 high-temperature resistance the coating film is intact, test at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Embodiment 6

[0089] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 20 parts of fluororubber 2602, 80 parts of fluororubber H228, 12 parts of mica powder, 13 parts of barium sulfate, 20 parts of zinc phosphate, 1.15 parts of expandable microsphere, 0.35 parts of polytetrafluoroethylene micro powder, 1 part of DS-F20 wetting dispersant, 2 parts of antifungal agent KEPUYIN-M23, and 35 parts of xylene; in component B, 40 parts of hydroquinone and 100 parts of xylene.

[0090] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0091] S1: adding fluororubber 2602, fluororubber H228, mica powder, barium sulfate, zinc phosphate, polytetrafluoroethylene micro powder, and xylene into a high-speed mixer and mixing evenly without agglomeration; [0092] S2: pouring the evenly mixed coating material into a basket mill and grinding the coating material to a fineness of 40 m; [0093] S3: adding expandable microsphere, antifungal agent and wetting dispersant and mixing evenly to obtain the component A of high-temperature resistant, peelable and anti-corrosion coating; [0094] S4: mixing hydroquinone with xylene evenly using a high-speed mixer to obtain the component B of the high-temperature resistant, peelable and anti-corrosion coating; [0095] S5: mixing 100 parts by weight of the component A with 2 parts by weight of the component B, applying by brush coating, air spraying, or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours after coating, so as to obtain a high-temperature resistant, peelable and anti-corrosion coating.

[0096] Performance tests were conducted on the coating prepared in Embodiment 6. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 7:

TABLE-US-00011 TABLE 7 Number Experimental project Test result 1 coating film appearance white 2 tensile strength at break, MPa 7.4 3 elongation at break, % 500 4 water resistance test at the coating film is intact, 23 C. 2 C., 24 h without bubbles or peeling 5 high-temperature resistance test the coating film is intact, at 200 C. 2 C., 4 h without bubbles or peeling 6 fungus resistance, 28 d 0 class 7 peel test (peel off at room good peelability temperature after 200 C./4 hours) 8 salt-fog test, 500 h the coating film is intact, without bubbles or peeling

Comparative Example 1

[0097] A high-temperature resistant, peelable and anti-corrosion coating is composed of the following raw materials in parts by weight: in component A, 100 parts of fluororubber L728A, 20 parts of fumed silica, 10 parts of quartz powder, 5 parts of mica flake, 5 parts of talcum powder, 7 parts of zinc phosphate, 1 part of carbon black, 1 part of antifungal agent KEPUYIN-M27, 1 part of DS-F20 wetting dispersant, and 34 parts of propylene glycol methyl ether acetate; in component B, 20 parts of bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) and 100 parts of propylene glycol methyl ether acetate.

[0098] The preparation method of the high-temperature resistant, peelable and anti-corrosion coating includes the following steps: [0099] S1: adding fluororubber L728A, fumed silica, quartz powder, mica flakes, talcum powder, zinc phosphate, carbon black, and propylene glycol methyl ether acetate into a high-speed mixer and mixing evenly without agglomeration; [0100] S2: pouring the evenly mixed coating material into a basket mill and grinding the coating material to a fineness of 40 m; [0101] S3: adding antifungal agent and wetting dispersant and mixing evenly to obtain component A of high-temperature resistant, peelable and anti-corrosion coating; [0102] S4: mixing bisphenol AF (2,2-bis(4-hydroxyphenyl)hexafluoropropane) with propylene glycol methyl ether acetate using a high-speed mixer to obtain component B of the high-temperature resistant, peelable and anti-corrosion coating; [0103] S5: mixing 100 parts by weight of component A with 10 parts by weight of component B evenly, applying by brush coating, air spraying, or high-pressure airless spraying, and curing at a high temperature of 160 C. for 2 hours after coating, so as to obtain a high-temperature resistant, peelable and anti-corrosion coating.

[0104] Performance tests were conducted on the coating prepared in Comparative example 1. The testing method refers to the testing method in Embodiment 1. The test results are shown in Table 8:

TABLE-US-00012 TABLE 8 Number Experimental project Test result 1 coating film appearance white 2 tensile strength at break, MPa 8.4 3 elongation at break, % 395 4 water resistance test at the coating film is intact, 23 C. 2 C., 24 h without bubbles or peeling 5 high-temperature resistance fungus the coating film is intact, resistance test at 200 C. 2 C., without bubbles or peeling 4 h 6 fungus resistance test, 28 d 0 class 7 peel test (peel off at room unable to peel off temperature after 200 C./4 hours) 8 salt-fog test 500 h the coating film is intact, without bubbles or peeling

[0105] The difference between Comparative Example 1 and Embodiment 1 is that no adhesion modifier was used. After 200 C./4 h, the coating of Comparative Example 1 could not be completely peeled off from the substrate, and the peelability decreased. It indicates that the adhesion modifier of the present disclosure improves the peelable properties of the coating, so that it can be peeled off the substrate completely.