A coating material containing a resin composition, and a method for preparing and using the same

Abstract

The application relates to the field of resin coatings, and particularly discloses a coating containing a resin composition and a preparation method and application thereof. The coating containing the resin composition is prepared from raw materials including a resin composition, a curing agent and an auxiliary material mixture, and the resin composition, the curing agent and the auxiliary material mixture are used in a weight ratio of 100:30-50:50-150 of the resin composition, the curing agent and the auxiliary material mixture; wherein the resin composition is composed of isocyanuric acid triglycidyl ester, bisphenol F type ring sulfur resin and tetraglycidyl amine type epoxy resin. The preparation method is that the auxiliary material mixture is added into the resin composition and the curing agent in a certain proportion respectively, mixed uniformly and then mixed, and finally the coating containing the resin composition is obtained. The coating has good bonding strength, good high-temperature resistance, acid corrosion resistance, rapid cooling resistance and rapid heating resistance, and the surface drying time meets the construction requirement, and the coating can be applied in a wet desulfurization chimney inner wall coating.

Description

Technical Field

[0001] This application relates to the technical field of resin coatings, and in particular to a coating containing a resin composition, a method for preparing the coating, and its application. Background Technology

[0002] As a thermosetting resin, epoxy resin molecules have excellent adhesion, wear resistance, corrosion resistance and good mechanical properties after curing. At the same time, it also has the advantages of excellent processability, stability and low cost, making it one of the most widely used basic resins in polymer materials.

[0003] With the increasing implementation of national environmental protection policies in the power industry, coal-fired power generating units must be equipped with wet desulfurization devices within a specified period. Wet desulfurization is a gas-liquid reaction process, characterized by rapid reaction speed, high desulfurization efficiency, and safe and reliable operation.

[0004] However, wet desulfurization units are located at the end of the flue. Because the wet desulfurization chimney is in a high-temperature and acidic corrosive environment for a long time, the durability of its concrete structure will be significantly reduced and the equipment will be severely corroded. The existing anti-corrosion coatings are not high-temperature resistant enough. In high-temperature working environments, the coatings age, which reduces their acid corrosion resistance until the coatings fail. Summary of the Invention

[0005] The purpose of this application is to solve the above-mentioned technical problems by providing a coating containing a resin composition, a preparation method thereof, and its application. The coating containing the resin composition, when applied to the inner wall of a wet desulfurization chimney, exhibits good adhesion strength, short surface drying time, and good high-temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating. Furthermore, the coating containing the resin composition is a solvent-free system with low volatile organic compound (VOC) content, making it an environmentally friendly coating.

[0006] The technical solution of this application

[0007] In a first aspect, this application provides a coating containing a resin composition, employing the following technical solution:

[0008] A coating containing a resin composition, comprising a resin composition, a curing agent, and an auxiliary mixture, wherein the amounts of the resin composition, curing agent, and auxiliary mixture, calculated by weight ratio, are 100:30-50:50-150.

[0009] The resin composition, by weight, comprises the following raw materials and their contents:

[0010] 5-15 parts of triglycidyl isocyanurate

[0011] 25-65 parts of bisphenol F type cyclosulfide resin

[0012] 10-50 parts of tetraglycidylamine type epoxy resin;

[0013] The curing agent, by weight, has the following composition and content of raw materials used in its preparation:

[0014] 30-70 parts of aromatic amines

[0015] 10-30 parts of alicyclic amine

[0016] 5-20 parts of aminopropylcyclotetrasiloxane

[0017] Accelerator 2-4 parts;

[0018] The aromatic amines mentioned above are a mixture of diaminodiphenylmethane and diethyltoluenediamine, with the mixing ratio calculated by weight as follows: diaminodiphenylmethane: diethyltoluenediamine = 1:0.1-0.6.

[0019] The aforementioned alicyclic amine is 1,3-cyclohexanedimethylamine (1,3-BAC). Other alicyclic amines such as isophorone diamine (IPDA), 3,3'-dimethyl-4,4'-diaminodicyclohexylmethane (DMDC), and 4,4-diaminodicyclohexylmethane (DC) can also be used in coatings and are suitable for the above-mentioned coatings containing resin compositions.

[0020] The aforementioned accelerator is triethanolamine. Other accelerators such as 1-methylimidazole and 2,4,6-tris(dimethylaminomethyl)phenol (DMP-30) can be used in the coatings industry and are also suitable for the above-mentioned coatings containing resin compositions.

[0021] The composition and content of the raw materials used in the preparation of the aforementioned excipient mixture, calculated by weight, are as follows:

[0022] 1-3 parts of silane coupling agent

[0023] 0.5-3 parts of rheology modifier

[0024] 1-10 parts of wetting and dispersing agent

[0025] 50-80 glass flakes

[0026] 20-50 parts mica powder;

[0027] The silane coupling agent mentioned above is KH550. Other silane coupling agents such as KH560 and KH570 that can be used in the coatings field are also suitable for the coatings containing the above-mentioned resin compositions.

[0028] The rheology modifier mentioned above is GARAMITE-1958;

[0029] The aforementioned wetting and dispersing agent is BYK-P104S;

[0030] The glass flakes mentioned above have a particle size of 1200-1300 mesh;

[0031] The particle size of the mica powder mentioned above is 1200-1300 mesh;

[0032] The resin composition, curing agent, and auxiliary material mixture can be stored separately, or the resin composition can be mixed evenly with 10%-50% of the total mass of the auxiliary material mixture, and the curing agent can be mixed evenly with the remaining auxiliary material mixture and then stored separately. They should be mixed before use and prepared immediately.

[0033] By adopting the above technical solution, the coating containing the resin composition has been tested and found to have an adhesion strength of 6.1-7.9 MPa, a surface drying time of 1.8-3.0 h, a heat resistance performance pass rate of 90%-99%, an acid corrosion resistance performance pass rate of 90%-96%, and a rapid cooling and heating resistance performance pass rate of 90%-97%. Therefore, the coating containing the resin composition has good adhesion strength, short surface drying time, and good high temperature resistance, acid corrosion resistance, and rapid cooling and heating resistance.

[0034] Furthermore, coatings containing resin compositions have good bonding strength, short surface drying time, and good high-temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating. They solve the technical problems of existing anti-corrosion coatings, such as insufficient high-temperature resistance and easy aging in high-temperature working environments. They have good durability after coating and can play a long-term protective role when used in concrete structures in wet desulfurization chimneys, further preventing the equipment from being severely corroded.

[0035] Furthermore, coatings containing resin compositions have ultra-low volatile organic compounds (VOCs), which improve the corrosion resistance of wet desulfurization chimneys without causing additional or secondary pollution to the environment, making them environmentally friendly coatings.

[0036] Preferably, in the above-mentioned coating containing the resin composition, the amounts of the resin composition, curing agent, and auxiliary material mixture, calculated by weight ratio, are 100:40:100 for the resin composition: curing agent: auxiliary material mixture.

[0037] Preferably, the resin composition in the above-mentioned coating containing the resin composition is calculated by weight ratio as follows: triglycidyl isocyanurate: bisphenol F type epoxide resin: tetraglycidylamine type epoxy resin = 1:5:4.

[0038] By adopting the above technical solution, the coating containing the resin composition has been tested and found to have an adhesion strength of 7.9 MPa, a surface drying time of 2.8 h, a heat resistance performance pass rate of 99%, an acid corrosion resistance performance pass rate of 96%, and a rapid cooling and heating resistance performance pass rate of 97%. At the same time, the viscosity is suitable, making it easy to process and providing good operability.

[0039] Secondly, this application provides a method for preparing a coating containing a resin composition, using the following technical solution:

[0040] The above-mentioned method for preparing a coating containing a resin composition includes the following preparation steps:

[0041] S1: Preparation of excipient mixture

[0042] (1) Preparation of excipient mixture I:

[0043] Add mica powder and glass flakes sequentially, and mix at a speed of 30-60 r / min until homogeneous to obtain auxiliary mixture I;

[0044] (2) Preparation of excipient mixture II:

[0045] Add silane coupling agent, rheology modifier and wetting and dispersing agent in sequence, and mix evenly at a speed of 50-100 r / min to obtain excipient mixture II;

[0046] S2: Preparation of resin composition

[0047] Add tetraglycidylamine epoxy resin to container I, heat the tetraglycidylamine epoxy resin to 110-130℃, then control the stirring speed to 50-100r / min, add triglycidyl isocyanurate and stir evenly, then stop heating, add bisphenol F type epoxide resin and stir evenly, then cool to room temperature to obtain resin composition.

[0048] S3: Preparation of curing agent

[0049] Add aromatic amine to container II, heat to 100-110℃, and stir at 50-100r / min until the aromatic amine becomes a uniform liquid. Stop heating, and then add alicyclic amine, aminopropylcyclotetrasiloxane and accelerator in sequence under stirring. Continue stirring and mixing, and then cool to room temperature to obtain curing agent.

[0050] S4: The proportion of resin composition, curing agent and auxiliary material mixture used in the preparation of coatings containing resin compositions;

[0051] First, add 10%-50% of the total weight of excipient mixture II to the resin composition. Under room temperature conditions, stir at a speed of 50-100 r / min until homogeneous. Then, add 10%-50% of the total weight of excipient mixture I and stir at a speed of 30-60 r / min until homogeneous to obtain mixture A.

[0052] Then, add the remaining auxiliary mixture II and auxiliary mixture I to the curing agent in sequence, and stir evenly at room temperature with a speed of 30-60 r / min to obtain mixture B;

[0053] S5: Add mixture B obtained in S4 to mixture A, and stir evenly while controlling the rotation speed at 20-50 r / min to obtain a coating containing a resin composition.

[0054] By adopting the above technical solution, the preparation method of coatings containing resin compositions is simple and easy to operate due to the use of simple processes such as mixing during the preparation process, and therefore suitable for large-scale production.

[0055] Furthermore, in the method for preparing coatings containing resin compositions, by adding auxiliary mixture I and auxiliary mixture II to the resin composition in a certain proportion to obtain mixture A, and then adding the remaining portion to the curing agent to obtain mixture B, and controlling the viscosity of mixture A and mixture B to be basically the same, it is easier to mix mixture A and mixture B evenly, thereby improving the preparation efficiency of coatings containing resin compositions.

[0056] Thirdly, the application of the above-obtained coating containing a resin composition in the inner wall coating of a wet desulfurization chimney adopts the following technical solution:

[0057] The application of a coating containing a resin composition in the inner wall coating of a wet desulfurization chimney specifically includes the following steps:

[0058] The above-obtained coating containing a resin composition is applied to the inner wall of a wet desulfurization chimney, with the coating thickness controlled at 2-3 mm, and allowed to dry naturally after application.

[0059] By adopting the above technical solution, the coating containing the resin composition has good bonding strength, short surface drying time, and good high temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating. It solves the technical problems of insufficient high temperature resistance and easy aging in high temperature working environment of existing anti-corrosion coatings. The coating has good durability after application and can play a long-term protective role in the concrete structure of wet desulfurization chimney, further preventing the equipment from being severely corroded.

[0060] Preferably, in the application of the above-obtained coating containing a resin composition in the inner wall coating of a wet desulfurization chimney, the coating is applied once every 12 hours during the coating process, and the thickness of each coating is controlled at 450-550 μm.

[0061] By adopting the above technical solution, multi-layer coating of the coating containing the resin composition has better high-temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating than single coating.

[0062] Beneficial technical effects of this application

[0063] The present application discloses a coating containing a resin composition, which is composed of a resin composition, a curing agent and an auxiliary mixture. It does not contain non-reactive diluents, has a low content of volatile organic compounds (VOCs), and is environmentally friendly.

[0064] The present application discloses a method for preparing a coating containing a resin composition, which is simple, easy to operate, and highly efficient, and is therefore suitable for large-scale production.

[0065] The coating containing a resin composition of this application, after being applied to the inner wall of a wet desulfurization chimney, shows that the resulting coating can be surface-dried within 3 hours at room temperature. It also exhibits good adhesion strength, high temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating, thus providing long-term protection for the concrete structure in the wet desulfurization chimney. Detailed Implementation

[0066] The present application will be further described in detail below with reference to the embodiments.

[0067] The names, models or specifications of the raw materials used in the various embodiments of this application, as well as the information on their manufacturers or suppliers, are shown in the table below:

[0068] Raw material name Model or Specification Manufacturer or supplier Triglycidyl isocyanurate T-4005 Dongguan Longchuang New Materials Technology Co., Ltd. Bisphenol F type cyclic sulfur resin FP 9900 (EX) Complex High-Tech Materials (Shanghai) Co., Ltd. Tetraglycidylamine type epoxy resin EP 8404 Complex High-Tech Materials (Shanghai) Co., Ltd. Diethyltoluenediamine E100 Jinan Shengda Chemical Co., Ltd. diaminodiphenylmethane DDM Heze Yonghui Composite Materials Co., Ltd. 1,3-Cyclohexanedimethylamine 1,3-BAC Jiangsu Xinsu New Materials Co., Ltd. aminopropylcyclotetrasiloxane CTS103 Guangzhou Yixin Technology Co., Ltd. Triethanolamine Purity ≥ 99% Commercially available Silane coupling agent KH550 Xinke Chemical Technology Co., Ltd. rheology modifiers GARAMITE-1958 BYK Chemical wetting and dispersing agents BYK-P104S BYK Chemical glass scales 1200-1300 mesh Commercially available mica powder 1200-1300 mesh Commercially available

[0069] The structural formula of the isocyanuric triglycidyl ester is: ;

[0070] The structural formula of the bisphenol F type cyclic sulfur resin is: The degree of polymerization n is 0-1;

[0071] The structural formula of the tetraglycidylamine type epoxy resin is: ;

[0072] The structural formula of the aminopropylcyclotetrasiloxane is: .

[0073] In the various application embodiments of this application, the adhesive strength (adhesion strength with cement mortar), surface drying time, heat resistance (250℃±5℃, constant temperature for 1h), acid corrosion resistance (sample immersed in 80℃, 40% H2SO4 for 15 days), and resistance to rapid cooling and heating (sample placed at 250℃±5℃ / 23℃±2℃ + air blowing, constant temperature for 1h each, cycled 5 times) of the obtained coatings containing resin compositions were tested and qualified according to the industry standard DL / T 693-1999 "Acid-resistant and Corrosion-resistant Coatings for Chimney Concrete".

[0074] Among them, for the tests of heat resistance, acid corrosion resistance and resistance to rapid cooling and heating, there are 100 samples for each test item. After the test, each sample is considered to have passed the test and is qualified if the coating / sample has no cracks, blistering and peeling (as shown in Table 1 of DL / T 693-1999 standard).

[0075] Among them, the samples for heat resistance, acid corrosion resistance and resistance to rapid cooling and heating were prepared in Example 1 by coating once (corresponding to a coating thickness of about 2 mm), twice (corresponding to a coating thickness of about 1 mm each time, with an interval of 12 h between coatings), and four times (corresponding to a coating thickness of about 500 μm each time, with an interval of 12 h between coatings), with a total coating thickness of 2 mm, to obtain test samples of the resin composition containing the coating with different coating times in Example 1.

[0076] The sample preparation process for the other examples and comparative examples was four coatings (each coating thickness was about 500 μm, with a 12-hour interval between coatings), with a total coating thickness of 2 mm, resulting in test samples of the resin-containing coatings of different examples (default coating number was 4 times).

[0077] The equipment model and manufacturer information used in the testing process of this application are as follows:

[0078] The digital fully automatic pull-out adhesion tester used for the adhesion strength test is model PosiTest AT-A, manufactured by Defelsko Corporation, USA.

[0079] The high-temperature aging test chamber used for heat resistance testing is model LH-225, manufactured by Nanjing Huanke Testing Equipment Co., Ltd. Example 1

[0080] A coating containing a resin composition, wherein the raw materials used in its preparation consist of a resin composition, a curing agent, and a mixture of auxiliary materials;

[0081] The composition and content (kg) of each raw material used in the preparation of the above-mentioned resin composition, curing agent, and auxiliary mixture are shown in the table below:

[0082]

[0083] The amount of resin composition, curing agent and auxiliary material mixture used in the preparation of the above-mentioned coating, calculated by weight ratio, is 100:40:100 for resin composition: curing agent: auxiliary material mixture.

[0084] The above-mentioned method for preparing a coating containing a resin composition includes the following preparation steps:

[0085] S1: Preparation of excipient mixture

[0086] (1) Preparation of excipient mixture I:

[0087] Mica powder and glass flakes were added sequentially, and the mixture was stirred at a speed of 50 r / min until homogeneous to obtain auxiliary mixture I.

[0088] (2) Preparation of excipient mixture II:

[0089] Add silane coupling agent (KH550), rheology modifier (GARAMITE-1958) and wetting and dispersing agent (BYK-P104S) sequentially, and mix evenly at a speed of 80 r / min to obtain excipient mixture II;

[0090] S2: Preparation of resin composition

[0091] Add tetraglycidylamine epoxy resin to container I, heat the tetraglycidylamine epoxy resin to 120°C, then control the stirring speed to 80 r / min, add triglycidyl isocyanurate and stir evenly, then stop heating, add bisphenol F type epoxide resin and stir evenly, then cool to room temperature to obtain resin composition.

[0092] S3: Preparation of curing agent

[0093] Aromatic amines (diethyltoluene diamine and diethyltoluene diamine) were added sequentially to container II, heated to 105°C, and stirred at 80 r / min for 1.5 h to obtain a homogeneous liquid aromatic amine. Heating was stopped, and then alicyclic amines (1,3-cyclohexanedimethylamine), aminopropylcyclotetrasiloxane, and accelerator (triethanolamine) were added sequentially under stirring. Stirring was continued for 0.8 h to mix evenly, and then cooled to room temperature to obtain a curing agent.

[0094] S4: Take 100 kg of resin composition, 40 kg of curing agent and 100 kg of auxiliary material mixture;

[0095] Add 50% of the total mass of excipient mixture II, i.e. 2.5 kg of excipient mixture II, to 100 kg of resin composition. Stir evenly at room temperature with a speed of 80 r / min. Then add 50% of the total weight of excipient mixture I, i.e. 47.5 kg of excipient mixture I, and stir evenly at a speed of 50 r / min to obtain mixture A.

[0096] Then, the remaining auxiliary mixture II (2.5 kg) and the remaining auxiliary mixture I (47.5 kg) were added to 40 kg of curing agent. The mixture was stirred evenly at room temperature with a rotation speed of 50 r / min to obtain mixture B.

[0097] S5: Add the mixture B obtained in S4 to the mixture A, and stir evenly while controlling the rotation speed at 30 r / min to obtain a coating containing the resin composition.

[0098] The coating containing the resin composition obtained above was applied to the sample, and the bonding strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating were tested respectively, as shown in the table below:

[0099]

[0100] The data in the table above shows that the adhesive strength and surface drying time of the coatings containing the resin composition meet the requirements of DL / T 693-1999 "Acid-Resistant and Corrosion-Resistant Coatings for Chimney Concrete". Furthermore, after application, the coatings containing the resin composition showed a 91%-99% pass rate in heat resistance tests, a 90%-96% pass rate in acid corrosion resistance tests, and a 90%-97% pass rate in resistance to rapid cooling and heating tests. In particular, after four coats, the pass rates for heat resistance tests reached 99%, acid corrosion resistance tests reached 96%, and resistance to rapid cooling and heating tests reached 97%.

[0101] The above results indicate that applying the resin-containing coating multiple times is more effective than applying it once, which can enhance the durability of the coating in the wet desulfurization chimney and extend its service life.

[0102] Comparative Examples 1-6 of Example 1

[0103] A coating containing a resin composition is prepared using the same raw material composition and content as in Example 1, except that the composition and content (kg) of the raw materials in the resin composition differ from those in Example 1. See the table below for details:

[0104]

[0105] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0106] The coatings containing resin compositions obtained in Comparative Examples 1-6 of Example 1 were tested for adhesive strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating. The test data were compared with those of Example 1 (4 times), as shown in the table below:

[0107] Test Project Example 1 (4 times) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Bond strength (MPa) 7.9 6.4 6.8 3.3 6.7 5.9 4.5 Surface drying time (h) 2.8 6.8 1.5 2.5 4.5 1.8 4.8 Pass rate of heat resistance test (%) 99 80 70 88 82 87 84 Pass rate of acid corrosion resistance test (%) 96 76 92 19 78 55 46 Pass rate of rapid cooling and heating resistance test (%) 97 87 86 40 86 66 60

[0108] Analysis of the data from Example 1 (4 times) and Comparative Example 1 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the curing agent and auxiliary mixture remain unchanged, and the proportions of the resin composition, curing agent, and auxiliary mixture are the same, the surface drying time is longer when triglycidyl isocyanate is used alone in the resin composition. The reason for this may be that, since triglycidyl isocyanate is a solid powder, it easily absorbs moisture from the air and deliquesces. A high content of triglycidyl isocyanate leads to uneven dispersion in the coating containing the resin composition, affecting the cured product performance and coating quality.

[0109] Analysis of the data from Example 1 (4 times) and Comparative Example 2 in the table above shows that when bisphenol F type cyclic sulfur resin is used alone in the resin composition, the pass rate of its heat resistance performance is low and the cost of bisphenol F type cyclic sulfur resin is high.

[0110] Analysis of the data from Example 1 (4 times) and Comparative Example 3 in the table above shows that when tetraglycidylamine epoxy resin is used alone in the resin composition, its bonding strength is low, at 3.3 MPa, and the pass rate for acid corrosion resistance test is only 19%, while the pass rate for rapid cooling and heating resistance test is only 40%.

[0111] Analysis of the data from Example 1 (4 times) and Comparative Examples 4-6 in the table above shows that when any two of the following resin compositions—triglycidyl isocyanurate, bisphenol F type epoxidized resin, and tetraglycidylamine type epoxy resin—are used in combination, the performance of the resulting coating containing the resin composition is not as good as when all three are used in combination.

[0112] The results above indicate that when a resin composition obtained by compounding triglycidyl isocyanate, bisphenol F type epoxide resin, and tetraglycidylamine type epoxy resin is used as one of the raw material components of a coating, the resulting coating containing the resin composition exhibits better overall performance.

[0113] Comparative Examples 7-10 of Example 1

[0114] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except that the composition and content (kg) of the curing agent differs from those in Example 1. See the table below for details:

[0115]

[0116] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0117] The coatings containing the resin composition obtained in Comparative Examples 7-10 of Example 1 were applied to the samples, and tests were conducted on the adhesion strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating. The test data were compared with those of Example 1 (4 times), as shown in the table below:

[0118] Test Project Example 1 (4 times) Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Bond strength (MPa) 7.9 6.6 3.6 1.6 6.7 Surface drying time (h) 2.8 27 1.9 1.2 15 Pass rate of heat resistance test (%) 99 96 88 95 96 Pass rate of acid corrosion resistance test (%) 96 93 78 92 96 Pass rate of rapid cooling and heating resistance test (%) 97 80 71 92 89

[0119] Analysis of the data from Example 1 (4 times) and Comparative Example 7 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the resin composition and auxiliary mixture remain unchanged, and the proportions of the resin composition, curing agent, and auxiliary mixture are the same, the surface drying time required for the resulting coating containing the resin composition is longer when only aromatic amine (diethyltoluene diamine) and accelerator (triethanolamine) are used in the curing agent.

[0120] Analysis of the data from Example 1 (4 times) and Comparative Example 8 in the table above shows that when only alicyclic amine (1,3-cyclohexanedimethylamine) and accelerator (triethanolamine) are used in the curing agent, the resulting coating containing the resin composition has a low bonding strength of 3.6 MPa, and the pass rate for heat resistance test is only 88%, the pass rate for acid corrosion resistance test is only 78%, and the pass rate for rapid cooling and heating test is only 71%, all of which are lower than those in Example 1.

[0121] Analysis of the data from Example 1 (4 times) and Comparative Example 9 in the table above shows that when only aminopropylcyclotetrasiloxane and accelerator (triethanolamine) are used in the curing agent, the bonding strength is low, only 1.6 MPa.

[0122] Analysis of the data from Comparative Examples 7 and 10 in the table above shows that, among the aromatic amine components in the curing agent, when diaminodiphenylmethane is used in combination with diethyltoluenediamine, the resulting coating containing the resin composition requires a shorter surface drying time than when diethyltoluenediamine is used alone; furthermore, its acid corrosion resistance pass rate increases from 93% to 96%, and its resistance to rapid cooling and heating pass rate increases from 80% to 89%.

[0123] The above results indicate that using aromatic amines (a combination of diaminodiphenylmethane and diethyltoluenediamine), alicyclic amines (1,3-cyclohexanedimethylamine), and aminopropylcyclotetrasiloxane as curing agents in combination with an accelerator (triethanolamine) in coatings containing resin compositions yields better results.

[0124] Comparative Examples 11-13 of Example 1

[0125] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except that the raw material composition and contents of the auxiliary mixture differ from those in Example 1. See the table below for details:

[0126]

[0127] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0128] The coatings containing the resin composition obtained in Comparative Examples 11-13 of Example 1 were applied to the samples, and the bonding strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating were tested. The test data were compared with those of Example 1 (4 times), as shown in the table below:

[0129] Test Project Example 1 (4 times) Comparative Example 11 Comparative Example 12 Comparative Example 13 Bond strength (MPa) 7.9 6.6 6.5 6.9 Surface drying time (h) 2.8 3.0 2.8 2.3 Pass rate of heat resistance test (%) 99 97 97 96 Pass rate of acid corrosion resistance test (%) 96 88 85 86 Pass rate of rapid cooling and heating resistance test (%) 97 91 86 89

[0130] Based on the data from Example 1 (4 times) and Comparative Examples 11-13 in the table above, it can be seen that when the auxiliary mixture is composed of glass flakes, mica powder, silane coupling agent (KH550), rheology modifier (GARAMITE-1958), and wetting and dispersing agent (BYK-P104S), the resulting coating containing the resin composition exhibits better overall performance in terms of bonding strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating.

[0131] Examples 2-5

[0132] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except that the content (kg) of the resin composition differs from that in Example 1. See the table below for details:

[0133]

[0134] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0135] The resin-containing coatings obtained in Examples 2-5 were applied to the samples, and tests were conducted on their adhesive strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating. The results were compared with the test data of Example 1 (4 times), as shown in the table below:

[0136] Test Project Example 1 (4 times) Example 2 Example 3 Example 4 Example 5 Bond strength (MPa) 7.9 7.3 7.0 7.2 7.0 Surface drying time (h) 2.8 2.4 2.1 2.4 2.9 Pass rate of heat resistance test (%) 99 94 96 95 97 Pass rate of acid corrosion resistance test (%) 96 92 95 93 90 Pass rate of rapid cooling and heating resistance test (%) 97 93 94 94 90

[0137] Analysis of the data from Examples 1 (4 times) and Examples 2-5 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the curing agent and auxiliary material mixture remain unchanged, and the proportions of the resin composition, curing agent, and auxiliary material mixture are the same, when the resin composition contains triglycidyl isocyanate, bisphenol F type cyclic sulfur resin, and tetraglycidylamine type epoxy resin in different proportions, the coating exhibits good overall performance with a bonding strength of 7.0-7.9 MPa, a surface drying time of 2.1-2.9 h, a heat resistance test pass rate of 94%-99%, an acid corrosion resistance test pass rate of 90%-96%, and a rapid cooling and heating resistance test pass rate of 90%-97%.

[0138] In particular, when the compounding ratio of triglycidyl isocyanurate, bisphenol F type cyclic sulfur resin and tetraglycidylamine type epoxy resin in the resin composition is 1:5:4, the resulting coating containing the resin composition has an adhesive strength of 7.9 MPa, a surface drying time of 2.8 h, a heat resistance test pass rate of 99%, an acid corrosion resistance test pass rate of 96%, and a rapid cooling and heating resistance test pass rate of 97%, indicating that the resulting coating containing the resin composition has better overall performance.

[0139] Examples 6-10

[0140] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except for the content (kg) of the curing agent, as detailed in the table below:

[0141]

[0142] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0143] The coatings containing the resin compositions obtained in Examples 6-10 were applied to the samples, and tests were conducted on their adhesive strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating. The results were compared with the test data of Example 1 (4 times), as shown in the table below:

[0144] Test Project Example 1 (4 times) Example 6 Example 7 Example 8 Example 9 Example 10 Bond strength (MPa) 7.9 7.3 7.8 6.4 6.1 6.6 Surface drying time (h) 2.8 1.9 2.7 2.5 2.1 2.9 Pass rate of heat resistance test (%) 99 97 98 95 94 97 Pass rate of acid corrosion resistance test (%) 96 93 95 92 91 93 Pass rate of rapid cooling and heating resistance test (%) 97 96 95 92 91 90

[0145] Analysis of the data from Examples 1 (4 times) and Examples 6-10 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the resin composition and auxiliary mixture remain unchanged, and the proportions of the resin composition, curing agent, and auxiliary mixture are the same, and when the compounding ratio of aromatic amines in the curing agent is 1:0.1-0.6 by weight of diaminodiphenylmethane:diethyltoluenediamine, the resulting coating containing resin compositions, after application, exhibits a bonding strength of 6.1-7.9 MPa, a surface drying time of 1.9-2.9 h, a heat resistance test pass rate of 94%-99%, an acid corrosion resistance test pass rate of 91%-96%, and a rapid cooling and heating resistance test pass rate of 90%-97%, demonstrating good overall performance.

[0146] Examples 11-12

[0147] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except for the content (kg) of the curing agent, as detailed in the table below:

[0148]

[0149] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0150] The coatings containing the resin composition obtained in Examples 11-12 above were applied to the samples, and the bonding strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating were tested, as shown in the table below:

[0151] Test Project Example 11 Example 12 Bond strength (MPa) 6.6 7.1 Surface drying time (h) 2.3 3.0 Pass rate of heat resistance test (%) 96 98 Pass rate of acid corrosion resistance test (%) 91 96 Pass rate (%) of resistance to rapid cooling and heating performance tests 96 92

[0152] The data analysis in the table above shows that the coatings containing resin compositions obtained in Examples 11-12, after application, have an adhesion strength of 6.6-7.1 MPa, a surface drying time of 2.3-3.0 h, a heat resistance performance pass rate of 96%-98%, an acid corrosion resistance performance pass rate of 91%-96%, and a rapid cooling and heating resistance performance pass rate of 92%-96%, indicating good overall performance.

[0153] Examples 13-15

[0154] A coating containing a resin composition is prepared using the same raw material components and contents as in Example 1, except for the content (kg) of the auxiliary material mixture, as detailed in the table below:

[0155]

[0156] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0157] The coatings containing the resin composition obtained in Examples 13-15 were applied to the samples, and tests were conducted on the adhesion strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating, as shown in the table below:

[0158] Test Project Example 13 Example 14 Example 15 Bond strength (MPa) 6.8 7.0 7.5 Surface drying time (h) 2.7 2.6 2.7 Pass rate of heat resistance test (%) 92 95 95 Pass rate of acid corrosion resistance test (%) 90 92 92 Pass rate of rapid cooling and heating resistance test (%) 91 90 92

[0159] The data analysis in the table above shows that the coatings containing resin compositions obtained in Examples 13-15, after application, have an adhesion strength of 6.8-7.5 MPa, a surface drying time of 2.6-2.7 h, a heat resistance performance pass rate of 92%-95%, an acid corrosion resistance performance pass rate of 90%-92%, and a rapid cooling and heating resistance performance pass rate of 90%-92%, indicating good overall performance.

[0160] Examples 16-19

[0161] A resin composition is identical to that of Example 1, except for the amount (kg) of the raw materials used in its preparation, as detailed in the table below:

[0162] Dosage (kg) Example 1 Example 16 Example 17 Example 18 Example 19 Resin Composition 100 100 100 100 100 curing agent 40 30 50 40 40 Excipient Mixture 100 100 100 50 150

[0163] The preparation method of the coating containing the resin composition described above is the same as that in Example 1.

[0164] The coatings containing the resin compositions obtained in Examples 16-19 were applied to the samples, and tests were conducted on their adhesive strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating. The results were compared with the test data of Example 1 (4 times), as shown in the table below:

[0165] Test Project Example 1 (4 times) Example 16 Example 17 Example 18 Example 19 Bond strength (MPa) 7.9 6.5 6.8 7.1 6.6 Surface drying time (h) 2.8 3.0 1.8 2.9 1.9 Pass rate of heat resistance test (%) 99 90 92 95 99 Pass rate of acid corrosion resistance test (%) 96 92 90 90 91 Pass rate (%) of resistance to rapid cooling and heating performance tests 97 90 94 91 93

[0166] Analysis of the data from Examples 1 (4 times) and Examples 16-17 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the resin composition, curing agent, and auxiliary material mixture remain unchanged, and the weight ratio of the resin composition: curing agent: auxiliary material mixture is 100:30-50:100, the resulting coating containing the resin composition, after 4 coats, exhibits a bonding strength of 6.5-7.9 MPa, a surface drying time of 1.8-3.0 h, a heat resistance test pass rate of 90%-99%, an acid corrosion resistance test pass rate of 90%-96%, and a rapid cooling and heating resistance test pass rate of 90%-97%, demonstrating good overall performance.

[0167] A comparison of the data from Example 1 (4 times) and Examples 18-19 in the table above shows that, in coatings containing resin compositions, when the raw material components and contents of the resin composition, curing agent, and auxiliary material mixture remain unchanged, and the weight ratio of resin composition:curing agent:auxiliary material mixture is 100:40:50-150, the resulting coating containing the resin composition, after 4 coats, exhibits a bonding strength of 6.6-7.9 MPa, a surface drying time of 1.9-2.9 h, a heat resistance test pass rate of 95%-99%, an acid corrosion resistance test pass rate of 90%-96%, and a rapid cooling and heating resistance test pass rate of 91%-97%, demonstrating good overall performance.

[0168] Specifically, in Example 1, when the weight ratio of resin composition, curing agent, and auxiliary material mixture was 100:40:100, the resulting coating containing the resin composition exhibited better overall performance. After four coats, its bonding strength was 7.9 MPa, surface drying time was 2.8 h, heat resistance test pass rate was 99%, acid corrosion resistance test pass rate was 96%, and rapid cooling and heating resistance test pass rate was 97%. Example 20

[0169] A coating containing a resin composition, the raw materials used in its preparation having the same composition and content as in Example 1.

[0170] The above-mentioned method for preparing a coating containing a resin composition includes the following preparation steps:

[0171] S1: Preparation of excipient mixture

[0172] (1) Preparation of excipient mixture I:

[0173] Mica powder and glass flakes were added sequentially, and the mixture was stirred at a speed of 30 r / min until homogeneous to obtain auxiliary mixture I.

[0174] (2) Preparation of excipient mixture II:

[0175] Add silane coupling agent (KH550), rheology modifier (GARAMITE-1958) and wetting and dispersing agent (BYK-P104S) sequentially, and mix evenly at a speed of 50 r / min to obtain excipient mixture II;

[0176] S2: Preparation of resin composition

[0177] Add tetraglycidylamine epoxy resin to container I, heat the tetraglycidylamine epoxy resin to 130°C, then control the stirring speed to 50 r / min, add triglycidyl isocyanurate and stir evenly, then stop heating, add bisphenol F type epoxide resin and stir evenly, then cool to room temperature to obtain resin composition.

[0178] S3: Preparation of curing agent

[0179] Aromatic amines (diethyltoluenediamine and diethyltoluenediamine) were added sequentially to container II, heated to 100°C, and stirred at 50 r / min for 2 h to obtain a homogeneous liquid aromatic amine. Heating was stopped, and then alicyclic amines (1,3-cyclohexanedimethylamine), aminopropylcyclotetrasiloxane, and accelerator (triethanolamine) were added sequentially under stirring. After stirring for 1 h and mixing until homogeneous, the mixture was cooled to room temperature to obtain a curing agent.

[0180] S4: Take 100 kg of resin composition, 40 kg of curing agent and 100 kg of auxiliary material mixture;

[0181] Add 50% of the total mass of excipient mixture II, i.e. 2.5 kg of excipient mixture II, to 100 kg of resin composition. Stir evenly at room temperature with a speed of 50 r / min. Then add 50% of the total weight of excipient mixture I, i.e. 47.5 kg of excipient mixture I, and stir evenly at a speed of 30 r / min to obtain mixture A.

[0182] Then, the remaining auxiliary mixture II (2.5 kg) and the remaining auxiliary mixture I (47.5 kg) were added to 40 kg of curing agent. The mixture was stirred evenly at room temperature with a rotation speed of 30 r / min to obtain mixture B.

[0183] S5: Add the mixture B obtained in S4 to the mixture A, and stir evenly while controlling the rotation speed at 20 r / min to obtain a coating containing the resin composition. Example 21

[0184] A coating containing a resin composition, the raw materials used in its preparation having the same composition and content as in Example 1.

[0185] The above-mentioned method for preparing a coating containing a resin composition includes the following preparation steps:

[0186] S1: Preparation of excipient mixture

[0187] (1) Preparation of excipient mixture I:

[0188] Mica powder and glass flakes were added sequentially, and the mixture was stirred evenly at a speed of 60 r / min to obtain auxiliary mixture I.

[0189] (2) Preparation of excipient mixture II:

[0190] Add silane coupling agent (KH550), rheology modifier (GARAMITE-1958) and wetting and dispersing agent (BYK-P104S) sequentially, and mix evenly at a speed of 100 r / min to obtain excipient mixture II;

[0191] S2: Preparation of resin composition

[0192] Add tetraglycidylamine epoxy resin to container I, heat the tetraglycidylamine epoxy resin to 110°C, then control the stirring speed to 100 r / min, add triglycidyl isocyanurate and stir evenly, then stop heating, add bisphenol F type epoxide resin and stir evenly, then cool to room temperature to obtain resin composition.

[0193] S3: Preparation of curing agent

[0194] Aromatic amines (diethyltoluene diamine and diethyltoluene diamine) were added sequentially to container II, heated to 110°C, and stirred at 100 r / min for 1 h to obtain a homogeneous liquid aromatic amine. Heating was stopped, and then alicyclic amines (1,3-cyclohexanedimethylamine), aminopropylcyclotetrasiloxane, and accelerator (triethanolamine) were added sequentially under stirring. Stirring was continued for 0.5 h until the mixture was homogeneous, and then cooled to room temperature to obtain a curing agent.

[0195] S4: Take 100 kg of resin composition, 40 kg of curing agent and 100 kg of auxiliary material mixture;

[0196] Add 50% of the total mass of excipient mixture II, i.e. 2.5 kg of excipient mixture II, to 100 kg of resin composition. Stir evenly at room temperature with a speed of 100 r / min. Then add 50% of the total weight of excipient mixture I, i.e. 47.5 kg of excipient mixture I, and stir evenly at a speed of 60 r / min to obtain mixture A.

[0197] Then, the remaining auxiliary mixture II (2.5 kg) and the remaining auxiliary mixture I (47.5 kg) were added to 40 kg of curing agent. The mixture was stirred evenly at room temperature with a rotation speed of 60 r / min to obtain mixture B.

[0198] S5: Add the mixture B obtained in S4 to the mixture A, and stir evenly while controlling the rotation speed at 50 r / min to obtain a coating containing the resin composition.

[0199] The coatings containing the resin composition obtained in Examples 20-21 above were applied to the samples, and the bonding strength, surface drying time, heat resistance, acid corrosion resistance, and resistance to rapid cooling and heating were tested, as shown in the table below:

[0200] Test Project Example 20 Example 21 Bond strength (MPa) 7.6 7.8 Surface drying time (h) 2.9 2.8 Pass rate of heat resistance test (%) 98 96 Pass rate of acid corrosion resistance test (%) 90 91 Pass rate of rapid cooling and heating resistance test (%) 93 91

[0201] A comparison of the data in the table above shows that the coatings containing the resin composition obtained in Examples 20-21, after application, have an adhesion strength of 7.6-7.8 MPa, a surface drying time of 2.8-2.9 h, a heat resistance performance pass rate of 96%-98%, an acid corrosion resistance performance pass rate of 90%-91%, and a rapid cooling and heating resistance performance pass rate of 91%-93%, indicating good overall performance.

[0202] In summary, the coating containing a resin composition of this application has good bonding strength, short surface drying time, and good high temperature resistance, acid corrosion resistance, and resistance to rapid cooling and heating, thus solving the technical problems of insufficient high temperature resistance and easy aging in high temperature working environments of existing anti-corrosion coatings.

[0203] The specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A coating containing a resin composition, characterized by, The raw materials for preparing the resin composition, the curing agent and the auxiliary material mixture consist of resin composition, curing agent and auxiliary material mixture, and the amount of the resin composition, the curing agent and the auxiliary material mixture is 100:30-50:50-150 by weight ratio. The raw materials for preparing the resin composition consist of isocyanuric acid triglycidyl ester 5-15 parts by weight Bisphenol F type ring sulfur resin 25-65 parts by weight Tetraglycidyl amine type epoxy resin 10-50 parts by weight The raw materials for preparing the curing agent consist of aromatic amine 30-70 parts by weight Alicyclic amine 10-30 parts by weight Aminopropyl cyclotetrasiloxane 5-20 parts by weight Accelerator 2-4 parts by weight The aromatic amine is a mixture of diamino diphenyl methane and diethyl toluene diamine, and the mixing ratio of diamino diphenyl methane to diethyl toluene diamine is 1:0.1-0.6 by weight ratio. The aliphatic amine is 1,3-cyclohexane dimethyl amine. The accelerator is triethanol amine. The raw materials for preparing the auxiliary material mixture consist of Silane coupling agent 1-3 parts by weight Rheological additive 0.5-3 parts by weight Wetting dispersant 1-10 parts by weight Glass flake 50-80 parts by weight Mica powder 20-50 parts by weight The silane coupling agent is KH550. The rheological additive is GARAMITE-1958. The wetting dispersant is BYK-P104S. The particle size of the glass flake is 1200-1300 mesh. The particle size of the mica powder is 1200-1300 mesh. The resin composition, the curing agent and the auxiliary material mixture are stored separately, or the resin composition is mixed with 10%-50% of the auxiliary material mixture, and the curing agent is mixed with the remaining auxiliary material mixture, and then they are stored separately and mixed before use.

2. A coating material containing a resin composition according to claim 1, characterized by In the resin composition, the amount of isocyanuric acid triglycidyl ester, bisphenol F type ring sulfur resin and tetraglycidyl amine type epoxy resin is 1:5:4 by weight ratio.

3. The coating containing the resin composition according to claim 1, characterized by The amount of the resin composition, the curing agent and the auxiliary material mixture is 100:40:100 by weight ratio. The preparation steps include:

4. The method of producing a paint containing a resin composition according to Claim 1, characterized by, S1: preparation of the auxiliary material mixture (1) Preparation of auxiliary material mixture I: Add the mica powder and the glass flake in sequence, and mix them uniformly at a speed of 30-60 r / min to obtain the auxiliary material mixture I. (2) Preparation of auxiliary material mixture II: Add the silane coupling agent, the rheological additive and the wetting dispersant in sequence, and mix them uniformly at a speed of 50-100 r / min to obtain the auxiliary material mixture II. S2: preparation of the resin composition ​ In container I, add tetraglycidyl amine type epoxy resin, heat the tetraglycidyl amine type epoxy resin to 110-130℃, then control the stirring speed to 50-100r / min, add isocyanuric acid triglycidyl ester and stir until uniform, then stop heating, add bisphenol F type episulfide resin and stir until uniform, then cool to room temperature to obtain a resin composition; S3: Preparation of curing agent In container II, add aromatic amine, heat to 100-110℃, control the stirring speed to 50-100r / min until the aromatic amine becomes a uniform liquid, stop heating, then add alicyclic amine, aminopropyl cyclotetrasiloxane and accelerator in sequence under stirring, continue to stir until uniform, then cool to room temperature to obtain a curing agent; S4: Mix the resin composition, curing agent and auxiliary mixture used for preparing the coating containing the resin composition according to the amount ratio; First, add 10%-50% of the total weight of auxiliary mixture II to the resin composition, stir until uniform at room temperature and at a speed of 50-100r / min, then add 10%-50% of the total weight of auxiliary mixture I, stir until uniform at a speed of 30-60r / min to obtain mixture A; Then, add the remaining auxiliary mixture II and auxiliary mixture I in sequence to the curing agent, stir until uniform at a speed of 30-60r / min at room temperature to obtain mixture B; S5: Add mixture B obtained in S4 to mixture A, stir until uniform at a speed of 20-50r / min to obtain a coating containing a resin composition.

5. The use of a coating containing a resin composition according to claim 1 in the inner wall coating of a wet desulfurization chimney.

6. Use of a coating material containing a resin composition according to claim 5 for the inner wall coating of a wet desulphurization chimney, characterized in that, The coating containing a resin composition is coated on the surface of a wet desulfurization chimney with a thickness of 2-3mm.

7. Use of a coating material containing a resin composition according to claim 6 for the inner wall coating of a wet desulphurization chimney, characterized in that, During the coating process, coating is performed every 12h, and the thickness of each coating is controlled to be 450-550μm.

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