Room-temperature quick-drying type lubricating, wear-resistant and corrosion-resistant integrated coating, coating and preparation method

Abstract

The invention discloses a room-temperature quick-drying type lubricating, wear-resistant and corrosion-resistant functional integrated coating, a coating and a preparation method. The functional integrated coating comprises the following raw materials in parts by mass: 8-14 parts of mixed resin; 7-13 parts of a lubricating filler; 0.5 to 1.5 parts of reinforcing filler; and 70-80 parts of a dispersion medium. Wherein the mixed resin is a combination of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyethersulfone resin, acrylic resin and polyurethane resin; the lubricating filler is a composition of polytetrafluoroethylene and molybdenum disulfide; the reinforcing filler is a composition of nano lanthanum trifluoride and nano cerium oxide; the dispersion medium is a mixture of trichloromethane and trichloroethane. The coating has the functions of lubrication, wear resistance, corrosion resistance, weather resistance, mold resistance and the like, the salt spray resistance is improved to 240 h or above, and meanwhile the wear life is longer than or equal to 60 min and the friction coefficient is smaller than or equal to 0.15 under the high-load and high-speed conditions.

Description

Technical Field

[0001] The invention relates to a wear-resistant and anti-corrosion coating, and in particular to a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating, a coating and a preparation method thereof. Background Art

[0002] Compared with land-based equipment, offshore equipment parts are exposed to high-salt and high-humidity marine environments for a long time. In addition to being subjected to long-term strong corrosion, they also need to withstand the coupling effects of multiple factors such as impact, vibration, friction and wear, alternating dry and wet conditions, and mold. The operating conditions are more stringent, resulting in a significant reduction in the service life of the equipment compared to land-based equipment. Damage to key parts under multi-factor conditions, especially wear-corrosion problems, has become a key common problem that restricts the efficient, stable and long-life service of modern offshore equipment.

[0003] Functional coatings play an important role in solving the wear or corrosion problems of mechanical equipment in marine environments due to their high cost-effectiveness and simple construction. For example, the Chinese patent CN112521836A applied for by the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences discloses a fast-drying aluminum coating with integrated lubrication / wear-resistant and anti-corrosion functions for fasteners. The coating uses different lubricating and wear-resistant fillers and different shapes of aluminum powder (mainly spherical and flaky structures) and embedding and entanglement with the molecular chains of the base resin to construct an isolated and shielded three-dimensional space structure. When external factors (including corrosive media and loads) diffuse into the coating, the flaky aluminum powder and polytetrafluoroethylene have a good shielding and barrier effect, preventing the corrosive media from diffusing into the coating. At the same time, polytetrafluoroethylene has good lubrication properties, and the spherical aluminum powder and rare earth fluoride (nano lanthanum trifluoride) embedded in the resin have good load-bearing capacity and wear resistance. Therefore, this three-dimensional structure of isolation and shielding ensures that the coating has both lubrication / wear resistance and corrosion protection functions. The coating produced by this patent has good adhesion, high mechanical strength, good resistance to paint strippers and fluids, excellent lubrication, wear resistance and corrosion protection, and fast drying speed at room temperature, and convenient operation process. This coating is mainly used for the surface of the inner thread of fasteners and their nuts. Since it needs to be cured by high temperature heating after coating, its application is limited in special field environments where it is difficult to provide high temperature heating curing conditions.

[0004] The multi-factor changes and dynamic coupling of the marine environment have very complex effects on materials, and the protection against wear and corrosion in the marine environment remains an international problem. At present, most of the technologies for this type of materials at home and abroad are still limited to the research on the friction, wear or corrosion characteristics of a specific material, specific conditions, and specific environment. The focus of their design and performance regulation is still on a single performance. There is still a lack of comprehensive consideration of the coexistence and unity of lubrication, wear resistance, corrosion resistance and other properties, and there are still constraints between the various properties. The comprehensive properties of existing functional coating materials such as lubrication, wear resistance and corrosion resistance are still difficult to meet the application requirements of new equipment.

[0005] Therefore, the development of a room temperature quick-drying, lubricating, wear-resistant and corrosion-resistant integrated coating can provide material and technical support for solving the wear-corrosion problems of moving parts of mechanical equipment serving in the marine environment, especially the maintenance difficulties in the field environment, and further solve the bottleneck problems that restrict the reliability and life of modern marine engineering equipment.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] The purpose of the present invention is to provide a room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated paint, coating and preparation method, which solves the problem that existing materials are difficult to meet the requirements of lubrication, wear resistance, corrosion resistance and other properties at the same time, takes into account lubrication, wear resistance, corrosion resistance, weather resistance, mildew resistance and other functions, and improves the salt spray resistance of the existing lubricating coating from 100h to more than 240h, while achieving a wear life of ≥60min and a friction coefficient of ≤0.15 under high load and high speed conditions.

[0008] In order to achieve the above object, the present invention provides a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating, the functional integrated coating comprising the following raw materials in parts by mass:

[0009] 8-14 parts of mixed resin;

[0010] 7-13 parts of lubricating filler;

[0011] 0.5 to 1.5 parts of reinforcing filler;

[0012] Dispersion medium 70-80 parts.

[0013] Wherein, the mixed resin is a combination of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyethersulfone resin, acrylic resin and polyurethane resin; the lubricating filler is a combination of polytetrafluoroethylene and molybdenum disulfide; the reinforcing filler is a combination of nano lanthanum trifluoride and nano cerium oxide; and the dispersing medium is a mixture of chloroform and trichloroethane.

[0014] Preferably, in the mixed resin, the mass ratio of the polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin is (0.15-0.3):(0-0.05):(0.75-1.25):(0-1), and the polyvinyl butyral resin and alkyd resin cannot be 0 at the same time, or the mass ratio of the polyethersulfone resin, acrylic resin and polyurethane resin is (0.15-0.3):(0.1-0.2):(0.75-1.25).

[0015] Preferably, in the lubricating filler, the mass ratio of polytetrafluoroethylene to molybdenum disulfide is (0.6-1.2):(0.03-0.06); or / and, in the reinforcing filler, the mass ratio of nano-lanthanum trifluoride to nano-cerium oxide is (0.2-0.6):(0.4-0.8).

[0016] Preferably, the viscosity of the polyethersulfone resin is 0.3 dL / g; or / and, the viscosity of the acrylic resin is 150-250s, the acid value is ≤6, and the solid content is 50%; or / and, the NCO content of the polyurethane resin is 6-8%; or / and, the relative density of the polyvinyl butyral resin is 1.07-1.08 g / cm 3 ; or / and, the viscosity of the alkyd resin is 17 to 25s, and the acid value is ≤8; or / and, the purity of the polytetrafluoroethylene is greater than 99%, or / and its particle size is 2 to 5 microns; or / and, the purity of the molybdenum disulfide is greater than 99%; or / and, the purity of the nano lanthanum trifluoride is greater than 99%, or / and its particle size is 40nm; or / and, the particle size of the nano cerium oxide is 20 to 50nm.

[0017] Preferably, in the dispersion medium, the volume ratio of chloroform to trichloroethane is (0.5-1.5):(0.5-1.5).

[0018] The second object of the present invention is to provide a method for preparing the room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating, which comprises the following steps:

[0019] (S1) mixing and dissolving a polyethersulfone resin and a dispersion medium to obtain a polyethersulfone resin solution;

[0020] (S2) mixing polytetrafluoroethylene, nano-lanthanum trifluoride, nano-cerium oxide, molybdenum disulfide and a dispersion medium, and grinding and dispersing the mixture to obtain a functional filler slurry;

[0021] (S3) The polyethersulfone resin solution obtained in step (S1), the functional filler slurry obtained in step (S2) and the acrylic resin or polyvinyl butyral resin are uniformly mixed by mechanical shearing and stirring, and then sequentially mixed with a polyurethane resin and a dispersion medium, or sequentially mixed with a polyurethane resin, an alkyd resin and a dispersion medium to obtain a room temperature quick-drying, lubricating, wear-resistant and anti-corrosion functional integrated coating.

[0022] Preferably, the mass ratio of the dispersion medium used in steps (S1), (S2) and (S3) is (1-3):(6-7):(1-2) respectively.

[0023] Preferably, in step (S3), the rotation speed of the mechanical shear stirring is 4500-7000 r / min, and the mixing time is 60-120 s.

[0024] The third object of the present invention is to provide a coating obtained from the room temperature quick-drying lubricating, wear-resistant and corrosion-resistant integrated coating.

[0025] The fourth object of the present invention is to provide a method for preparing the coating, which comprises: applying the room temperature quick-drying lubricating, wear-resistant and corrosion-resistant integrated coating to the surface of mechanical parts to be protected by spraying or brushing, and obtaining the coating after curing; the curing environment is an atmospheric room temperature environment, and the surface drying time is ≤10min; wherein, when the spraying method is adopted, the pressure is adjusted to 0.05-0.15MPa, and the spraying is performed 3-5 times to reach a thickness of 20-40 microns; when the brushing method is adopted, the brushing is performed 1-2 times to reach a thickness of 20-40 microns, and the next brushing is performed after the coating surface is dry after each brushing.

[0026] The fifth object of the present invention is to provide the application of the room temperature quick-drying lubricating, wear-resistant and corrosion-resistant integrated coating or the coating in mechanical equipment serving in a marine environment.

[0027] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated paint, coating and preparation method of the present invention solve the problem that existing materials are difficult to simultaneously have lubrication, wear resistance, corrosion resistance and other properties, and have the following advantages:

[0028] (1) The present invention is based on the application of multi-component resin and filler composite and mixed dispersion medium, so that the coating has the characteristics of rapid drying and flame retardancy at room temperature, and the surface drying time is ≤10min, which can effectively solve the problem of rapid maintenance of mechanical equipment in the field, overcome the limitations of curing conditions of thermal curing and other types of coatings, and provide storage safety;

[0029] (2) The polytetrafluoroethylene introduced in the present invention has low shear properties and low surface energy properties, which not only provides excellent lubrication properties for the coating, but also provides hydrophobicity, excellent chemical stability and corrosion resistance; the introduced molybdenum disulfide as a two-dimensional layered material not only provides excellent lubrication and barrier properties, but also improves the bearing capacity of the coating;

[0030] (3) The nano-lanthanum trifluoride and nano-cerium oxide introduced in the present invention can be compounded with lubricants to exert a synergistic enhancement effect, thereby improving the wear resistance of the coating; nano-cerium oxide has excellent chemical corrosion inhibition performance. After water penetrates the coating, part of the corrosion-inhibiting filler dissolves and can undergo a passivation reaction with the metal surface. With the generation and accumulation of insoluble metal salts, it can act as a barrier to prevent the infiltration of corrosive substances, thereby effectively improving the corrosion resistance of the coating;

[0031] (4) The coating prepared by the room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating of the present invention breaks through the bottleneck of the existing coating materials that are insufficient in combining multiple functions in the marine environment. It can take into account the functions of lubrication, wear resistance, corrosion resistance, weather resistance, and mildew resistance, and improve the salt spray resistance of the existing lubricating coating from 100h to more than 240h. At the same time, it can achieve a wear life of ≥60min and a friction coefficient of ≤0.15 under high-load and high-speed conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The physicochemical properties (a, b), salt spray resistance performance photo (c) and friction coefficient curve (d) of the coating prepared in Example 1 of the present invention; wherein (a) is a coating adhesion level 0 graph; and (b) is a coating impact resistance 50cm graph.

[0033] Figure 2 This is the friction coefficient curve of the coating prepared in Example 2 of the present invention.

[0034] Figure 3 This is the friction coefficient curve of the coating prepared in Example 3 of the present invention.

[0035] Figure 4 The coating mold resistance test sample (a), the marine environment exposure sample (b) and the friction coefficient curve (c) prepared in Example 4 of the present invention.

[0036] Figure 5 This is the friction coefficient curve of the coating prepared in Example 5 of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that if the specific conditions are not specified in the examples, the experiments were carried out according to conventional conditions or the conditions recommended by the manufacturer. If the manufacturers of the reagents or instruments are not specified, they are all conventional products that can be purchased from the market.

[0039] In the present invention, all features defined in the form of numerical ranges or percentage ranges, such as values, quantities, contents and concentrations, are only for brevity and convenience. Accordingly, the description of numerical ranges or percentage ranges should be considered to have included and specifically disclosed all possible secondary ranges and individual values ​​within the range (including integers and fractions).

[0040] The features mentioned in the present invention can be combined arbitrarily, as long as there is no contradiction in the combination of these features, all possible combinations should be considered as the scope of this specification. Each feature disclosed in the specification can be replaced by any alternative feature that can provide the same, equal or similar purpose. Therefore, unless otherwise specified, the disclosed features are only general examples of equal or similar features.

[0041] The present invention provides a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating, coating and preparation method, wherein the functional integrated coating comprises the following raw materials in parts by mass:

[0042] 8-14 parts of mixed resin;

[0043] 7-13 parts of lubricating filler;

[0044] 0.5 to 1.5 parts of reinforcing filler;

[0045] Dispersion medium 70-80 parts.

[0046] Among them, the mixed resin is a combination of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyethersulfone resin, acrylic resin and polyurethane resin; the lubricating filler is a combination of polytetrafluoroethylene and molybdenum disulfide; the reinforcing filler is a combination of nano lanthanum trifluoride and nano cerium oxide; and the dispersion medium is a mixture of chloroform and trichloroethane.

[0047] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of the present invention is a suspended liquid, which needs to be fully stirred or shaken before use. The coating of the present invention is applied to the surface of mechanical parts to be protected by spraying or brushing. Since the coating is a quick-drying coating, the pressure is adjusted to 0.05-0.15MPa during spraying. A thickness of 20-40 microns can be achieved by spraying 3-5 times; a thickness of 20-40 microns can be achieved by brushing 1-2 times. The coating dries quickly after each brushing (drying in 5 minutes). The coating can be used after the surface is dry.

[0048] The materials used in the following examples and comparative examples are as follows:

[0049] (1) Polyethersulfone resin: white powder, intrinsic viscosity 0.3 dL / g, provided by Xuzhou Aviation Materials Engineering Plastics Co., Ltd.;

[0050] (2) Acrylic resin: transparent liquid, viscosity 150-250s, acid value ≤6, solid content 50%, provided by Changzhou Chenguang Resin Co., Ltd.;

[0051] (3) Polyurethane resin: transparent liquid, NCO content 6-8%, provided by Shanghai Huayi Resin Co., Ltd.

[0052] (4) Polyvinyl butyral resin: relative density 1.07-1.08 g / cm 3 , provided by Dongguan Xinhui Plastic Raw Materials Co., Ltd.;

[0053] (5) Alkyd resin: transparent liquid, viscosity 17-25s, acid value ≤8, provided by Jiangsu Sanmu Chemical Co., Ltd.;

[0054] (6) Polytetrafluoroethylene: purity greater than 99%, particle size 2 to 5 microns;

[0055] (7) Molybdenum disulfide: purity greater than 99%;

[0056] (8) Nano-lanthanum trifluoride: purity greater than 99%, particle size 40nm;

[0057] (9) Nano-cerium oxide: particle size is 20-50 nm;

[0058] (10) The epoxy resin, phenolic resin and silicone resin are the same as those in publication number CN112521836A.

[0059] The following is a detailed description of a room temperature quick-drying lubricating, wear-resistant and corrosion-resistant integrated paint, coating and preparation method provided by the present invention through examples and comparative examples.

[0060] Example 1

[0061] A room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating comprising the following raw materials in parts by mass:

[0062] Mixed resin 12.8 parts

[0063] Lubricating filler 9.4 parts

[0064] Reinforcement filler 0.67 parts

[0065] 79 parts of dispersion medium.

[0066] Wherein, the mixed resin is a composition of polyethersulfone resin, acrylic resin and polyurethane resin, and the mass ratio of polyethersulfone resin, acrylic resin and polyurethane resin is 0.25:0.1:1.25;

[0067] The lubricating filler is a composition of polytetrafluoroethylene and molybdenum disulfide, and the mass ratio of polytetrafluoroethylene to molybdenum disulfide is 0.675:0.03.

[0068] The reinforcing filler is a composition of nano-lanthanum trifluoride and nano-cerium oxide, and the mass ratio of nano-lanthanum trifluoride to nano-cerium oxide is 0.2:0.47.

[0069] The above dispersion medium is a mixture of chloroform and trichloroethane, and the volume ratio of chloroform to trichloroethane is 1:1.

[0070] The preparation method of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment comprises the following steps:

[0071] (S1) mixing 20 g of a polyethersulfone resin and 200 g of a dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) and stirring to dissolve the mixture to obtain a polyethersulfone resin solution;

[0072] (S2) 90 g of polytetrafluoroethylene, 2 g of nano-lanthanum trifluoride, 4.7 g of nano-cerium oxide, 4 g of molybdenum disulfide and 470 g of a dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) are mixed, and the mixed solution is ground and dispersed to obtain a functional filler slurry;

[0073] (S3) 220 g of the polyethersulfone resin solution obtained in step (S1), 8 g of the acrylic resin and 570.7 g of the functional filler slurry obtained in step (S2) are mixed uniformly by mechanical shear stirring at a rotation speed of 5000 r / min for 60 s, and then mixed with 100 g of a polyurethane resin and 120 g of a dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) in sequence to obtain a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating.

[0074] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating is brushed on the surface of a clean substrate. After brushing, the surface is dried at room temperature to obtain a lubricating, wear-resistant and anti-corrosion integrated coating with a thickness of about 30 μm.

[0075] The coating prepared in Example 1 was subjected to the following tests:

[0076] 1) Determination of coating surface drying time: in accordance with GB / T 1728;

[0077] 2) Adhesion test: in accordance with GB / T 9286;

[0078] 3) Flexibility determination: in accordance with GB / T 1731;

[0079] 4) Impact resistance test: in accordance with GB / T 1732;

[0080] 5) Acid salt spray resistance performance test: Test according to the method specified in GJB 150.11A, and adjust the pH of the salt solution to 3.5±0.3 with concentrated sulfuric acid;

[0081] 6) Determination of tribological properties of coatings: measured on a bolt-on-disc friction and wear tester, with a GCr15 steel ball of 12 mm in diameter as the friction material, a frequency of 10 Hz, a friction coefficient value based on the average friction coefficient, and a wear life represented by the time taken for the coating to wear through;

[0082] 7) Determination of coating mildew resistance: in accordance with GJB 150.10A;

[0083] 8) Marine environment exposure test: in accordance with JB / T 8683.

[0084] Experimental results: The coating of this embodiment has a surface drying time of 6 minutes, coating adhesion of 0 level, flexibility of 1mm, impact resistance of 50cm, acid salt spray resistance of more than 360h, coating friction coefficient of 0.11, wear life of more than 65min, mildew resistance level of 0 after 1 month mildew test, marine environment exposure test ≥ 6 months (see Figure 1 ).

[0085] Example 2

[0086] A room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating comprising the following raw materials in parts by mass:

[0087] Mixed resin 12.8 parts

[0088] Lubricating filler 9.4 parts

[0089]

[0090] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0091] In the above-mentioned reinforcing filler, the mass ratio of nano-lanthanum trifluoride to nano-cerium oxide is 0.2:0.6.

[0092] In the above dispersion medium, the volume ratio of chloroform to trichloroethane is 0.8:1.2.

[0093] The preparation method of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is basically the same as that of embodiment 1, except that:

[0094] In step (S2), the amount of nano-cerium oxide used is 6 g; and in steps (S1), (S2) and (S3), the dispersion medium is obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 0.8:1.2.

[0095] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is used to prepare the coating. The preparation method of the lubricating, wear-resistant and anti-corrosion integrated coating is the same as that of Example 1.

[0096] The coating surface dryness, adhesion, flexibility, impact resistance, acid salt spray resistance, friction coefficient, and wear life testing methods are the same as those in Example 1.

[0097] Experimental results: The coating of this embodiment has a surface drying time of 5 minutes, a coating adhesion of 0 level, a flexibility of 1mm, an impact resistance of 50cm, an acid salt spray resistance of 280h, a coating friction coefficient of 0.12, and a wear life of 65min (see Figure 2 ).

[0098] Example 3

[0099] A room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating comprising the following raw materials in parts by mass:

[0100]

[0101] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0102] In the above lubricating filler, the mass ratio of polytetrafluoroethylene to molybdenum disulfide is 0.6:0.03;

[0103] In the above-mentioned reinforcing filler, the mass ratio of nano-lanthanum trifluoride to nano-cerium oxide is 0.2:0.6.

[0104] The preparation method of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is basically the same as that of embodiment 1, except that:

[0105] In step (S2), the amount of polytetrafluoroethylene used is 80g; the amount of nano-cerium oxide used is 6g.

[0106] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is used to prepare the coating. The preparation method of the lubricating, wear-resistant and anti-corrosion integrated coating is the same as that of Example 1.

[0107] The coating surface dryness, adhesion, flexibility, impact resistance, acid salt spray resistance, friction coefficient, and wear life testing methods are the same as those in Example 1.

[0108] Experimental results: The coating of this embodiment has a surface drying time of 6 minutes, a coating adhesion of 0 level, a flexibility of 1mm, an impact resistance of 50cm, an acid salt spray resistance of 380h, a coating friction coefficient of 0.1, and a wear life of more than 60 minutes (see Figure 3 ).

[0109] Example 4

[0110] A room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating comprising the following raw materials in parts by mass:

[0111] Mixed resin 12.12 parts

[0112] Lubricating filler 9.4 parts

[0113] Reinforcement filler 0.67 parts

[0114] 79 parts of dispersion medium.

[0115] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0116] The mixed resin is a combination of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, and the mass ratio of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin is 0.3:0.018:0.75:0.75.

[0117] The preparation method of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is basically the same as that of embodiment 1, except that:

[0118] In step (S3), 1.2 g of polyvinyl butyral resin is used to replace 8 g of acrylic resin; the polyethersulfone resin solution, polyvinyl butyral resin and functional filler slurry are uniformly mixed, and then mixed with 50 g of polyurethane resin, 50 g of alkyd resin and 120 g of dispersion medium in sequence.

[0119] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is used to prepare the coating. The preparation method of the lubricating, wear-resistant and anti-corrosion integrated coating is the same as that of Example 1.

[0120] The testing methods for coating surface dryness, adhesion, flexibility, impact resistance, acid salt spray resistance, friction coefficient, wear life, mildew resistance and marine environment exposure test are the same as those in Example 1.

[0121] Experimental results: The coating of this embodiment has a surface drying time of 8 minutes, a coating adhesion of 0 level, a flexibility of 1mm, an impact resistance of 50cm, an acid salt spray resistance of 300h, a coating friction coefficient of 0.09, a wear life of more than 65 minutes, a mildew resistance level of 0 after a one-month mildew test, and a marine environment exposure test of ≥6 months (see Figure 4 ).

[0122] Example 5

[0123] A room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating comprising the following raw materials in parts by mass:

[0124] Mixed resin 12.12 parts

[0125] Lubricating filler 9.4 parts

[0126] Reinforcement filler 0.67 parts

[0127]

[0128] The components and dosages of the components are substantially the same as those in Example 4, except that:

[0129] In the mixed resin, the mass ratio of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin is 0.3:0.018:1.2:0.3.

[0130] The preparation method of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is basically the same as that of embodiment 4, except that:

[0131] In step (S3), the amount of polyurethane resin used is 80 g; the amount of alkyd resin used is 20 g.

[0132] The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating of this embodiment is used to prepare the coating. The preparation method of the lubricating, wear-resistant and anti-corrosion integrated coating is the same as that of Example 1.

[0133] The coating surface dryness, adhesion, flexibility, impact resistance, acid salt spray resistance, friction coefficient, and wear life testing methods are the same as those in Example 1.

[0134] Experimental results: The coating of this embodiment has a surface drying time of 8 minutes, a coating adhesion of 0 level, a flexibility of 1mm, an impact resistance of 50cm, an acid salt spray resistance of 360h, a coating friction coefficient of 0.05, and a wear life of more than 65 minutes (see Figure 5).

[0135] Comparative Example 1

[0136] The coating is basically the same as that of Example 1, except that:

[0137]

[0138] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0139] The mixed resin is a composition of epoxy resin, phenolic resin and silicone resin, and the mass ratio of epoxy resin, phenolic resin and silicone resin is 6:2:0.1.

[0140] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0141] In step (S1), 90 g of epoxy resin, 30 g of phenolic resin and 1.5 g of silicone resin are added to 200 g of dispersion medium, and ultrasonic stirring is performed at room temperature to completely dissolve them, thereby obtaining a dissolved resin system; in step (S3), 120.25 g of the resin system prepared in step (S1), 570.5 g of the functional filler slurry prepared in step (S2) and 100 g of dispersion medium are mixed uniformly by mechanical shear stirring at a rotation speed of 5000 r / min for 60 seconds to obtain a room temperature quick-drying coating.

[0142] The method for preparing the coating using the coating of this comparative example is the same as that of Example 1.

[0143] The coating surface drying detection method is the same as in Example 1.

[0144] The surface drying time of the coating prepared in this comparative example 1 is 60 seconds, and the internal curing of the coating is not complete after being placed in the atmosphere at room temperature for 24 hours.

[0145] Comparative Example 2

[0146] The coating is basically the same as that of Example 1, except that:

[0147] Mixed resin 12.8 parts

[0148] Lubricating filler 9.4 parts

[0149] Reinforcement filler 0.67 parts

[0150] 79 parts of dispersion medium.

[0151] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0152] The above-mentioned dispersion medium is a mixture of anhydrous ethanol, butanone and toluene, and the volume ratio of anhydrous ethanol, butanone and toluene is 25:18:57.

[0153] The above dispersion medium is a mixture of chloroform and trichloroethane.

[0154] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0155] In steps (S1) to (S3), the dispersion medium is formed by uniformly mixing the following components in volume percentage: 25% anhydrous ethanol, 18% butanone and 57% toluene. Other steps and amounts are the same as those in Example 1.

[0156] The dispersion medium in the coating preparation process of Comparative Example 2 has poor compatibility with the resin system in Example 1, and gel agglomeration occurs during the coating preparation process, making it difficult to form. In addition, anhydrous ethanol, butanone and toluene are all flammable and explosive organic solvents, and the prepared coating is difficult to have flame retardant properties.

[0157] Comparative Example 3

[0158] The coating is basically the same as that of Example 1, except that:

[0159] Resin 10 parts;

[0160] Lubricating filler 9.4 parts;

[0161] Reinforcement filler 0.67 parts;

[0162] Dispersion medium 57 parts.

[0163] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0164] The above resin is room temperature curing E6 epoxy resin.

[0165] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0166] In step (S1), 100 g of room temperature curing E6 epoxy resin and 100 g of dispersion medium are mixed and dissolved to obtain an E6 epoxy resin solution;

[0167] In step (S3), 200 g of the E6 epoxy resin solution obtained in step (S1) and 570.5 g of the functional filler slurry obtained in step (S2) are mixed uniformly by mechanical shearing and stirring at a rotation speed of 5000 r / min for 60 seconds to obtain a room temperature quick-drying coating.

[0168] The method for preparing the coating using the coating of this comparative example is the same as that of Example 1.

[0169] The coating surface drying, adhesion and flexibility testing methods are the same as those in Example 1.

[0170] Experimental results: The surface drying time of the coating prepared in comparative example 3 is 30 minutes, the coating adhesion is level 4, and the flexibility is 5 mm. It can be seen that the coating adhesion and flexibility of comparative example 3 are worse than those of the coating in embodiment 1.

[0171] Comparative Example 4

[0172] The coating is basically the same as that of Example 1, except that:

[0173] Mixed resin 12.8 parts

[0174] Lubricating filler 9.4 parts

[0175] Reinforced filler 0.2 parts

[0176] 79 parts of dispersion medium.

[0177] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0178] The reinforcing filler is nano lanthanum trifluoride.

[0179] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0180] In step (S2), 90 g of polytetrafluoroethylene, 2 g of nano-lanthanum trifluoride, 4 g of molybdenum disulfide and 470 g of dispersion medium are mixed, and the mixed solution is ground and dispersed to obtain a functional filler slurry.

[0181] The method for preparing the coating using the coating of this comparative example is the same as that of Example 1.

[0182] The coating surface drying, adhesion, flexibility, impact resistance, and acid salt spray resistance testing methods are the same as those in Example 1.

[0183] Experimental results: The surface drying time of the coating prepared in Comparative Example 4 is 5 minutes, the coating adhesion is level 0, the flexibility is 1 mm, the impact resistance is 50 cm, and the acid salt spray resistance is 161 hours. It can be seen that the acid salt spray resistance of the coating of Comparative Example 4 is significantly lower than that of the coating of Example 1 (the acid salt spray resistance of the coating of Example 1 is greater than 360 hours).

[0184] Comparative Example 5

[0185] The coating is basically the same as that of Example 1, except that:

[0186] Mixed resin 12.8 parts

[0187] Lubricating filler 9.4 parts

[0188] Reinforced filler 0.2 parts

[0189] 79 parts of dispersion medium.

[0190] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0191] The lubricating filler is polytetrafluoroethylene.

[0192] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0193] In step (S2), 94 g of polytetrafluoroethylene, 2 g of nano-lanthanum trifluoride and 470 g of a dispersion medium are mixed, and the mixed solution is ground and dispersed to obtain a functional filler slurry.

[0194] The method for preparing the coating using the coating of this comparative example is the same as that of Example 1.

[0195] The coating surface dryness, adhesion, flexibility, impact resistance, acid salt spray resistance, friction coefficient, and wear life testing methods are the same as those in Example 1.

[0196] Experimental results: The coating prepared in comparative example 5 has a surface drying time of 10 minutes, coating adhesion of level 0, flexibility of 1 mm, impact resistance of 50 cm, acid salt spray resistance of 350 hours, coating friction coefficient of 0.13, and wear life of 30 minutes. It can be seen that the wear life of the coating of comparative example 5 is significantly lower than that of the coating of example 1 (the wear life of the coating of example 1 is 65 minutes).

[0197] Comparative Example 6

[0198] The coating is basically the same as that of Example 1, except that:

[0199] Mixed resin 12 parts

[0200] Lubricating filler 9.4 parts

[0201] Reinforcement filler 0.67 parts

[0202] 79 parts of dispersion medium.

[0203] The components and dosages of the components are substantially the same as those in Example 1, except that:

[0204] The mixed resin is a composition of polyethersulfone resin and polyurethane resin, and the mass ratio of the polyethersulfone resin to the polyurethane resin is 1:5.

[0205] The preparation method of the coating of this comparative example is basically the same as that of Example 1, except that:

[0206] In step (S3), 220 g of the resin system prepared in step (S1) and 570.5 g of the functional filler slurry prepared in step (S2) are mixed uniformly by mechanical shear stirring at a rotation speed of 5000 r / min for 60 s, and then mixed with 100 g of polyurethane resin and 120 g of dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) in sequence to obtain a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating.

[0207] During the coating preparation process of Comparative Example 6, after the polyurethane resin was added in step (S3), the coating showed gel agglomeration phenomenon.

[0208] Comparative Example 7

[0209] The coating is basically the same as that of Example 4, except that:

[0210] Mixed resin 12.12 parts

[0211] Lubricating filler 9.4 parts

[0212] Reinforcement filler 0.67 parts

[0213] 79 parts of dispersion medium.

[0214] The components and dosages of the components are substantially the same as those in Example 4, except that:

[0215] The mixed resin is a composition of polyethersulfone resin, polyvinyl butyral resin and polyurethane resin, and the mass ratio of polyethersulfone resin, polyvinyl butyral resin and polyurethane resin is 1:0.06:5.

[0216] The preparation method of the coating of this comparative example is basically the same as that of Example 4, except that:

[0217] In step (S3), 220 g of the resin system prepared in step (S1) and 570.5 g of the functional filler slurry prepared in step (S2) are mixed uniformly by mechanical shear stirring at a rotation speed of 5000 r / min for 60 s, and then mixed with 100 g of polyurethane resin and 120 g of dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) in sequence to obtain a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating.

[0218] The method for preparing the coating using the coating of this comparative example is the same as that of Example 1.

[0219] The coating surface dryness, adhesion, flexibility, impact resistance, friction coefficient, and wear life testing methods are the same as those in Example 1.

[0220] Experimental results: The coating prepared in comparative example 7 has a surface drying time of 8 minutes, coating adhesion of level 0, flexibility of 1 mm, impact resistance of 50 cm, coating friction coefficient of 0.12, and wear life of 35 minutes. It can be seen that the wear life of the coating of comparative example 7 is significantly lower than that of the coating of example 4 (the wear life of the coating of example 4 is 65 minutes).

[0221] Comparative Example 8

[0222] The components and dosages are the same as those in Example 1, except that:

[0223] (S3) 220 g of the polyethersulfone resin solution obtained in step (S1), 8 g of acrylic resin and 100 g of polyurethane resin are first mixed, and then mixed with 570.7 g of the functional filler slurry obtained in step (S2) at a rotation speed of 5000 r / min for 60 s to be uniformly mixed, and then 120 g of a dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) is added and mixed to obtain a room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating.

[0224] When the preparation method of Comparative Example 8 is adopted, a large amount of foam appears in the coating, the compatibility of the filler and the resin system deteriorates, and the coating is uneven when applied.

[0225] In summary, the coating of the present invention combines the functions of lubrication, wear resistance, corrosion resistance, weather resistance, and mildew resistance, and improves the salt spray resistance of the existing lubricating coating from 100h to more than 240h. At the same time, it achieves a wear life of ≥60min and a friction coefficient of ≤0.15 under high load and high speed conditions.

[0226] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating, characterized in that: The functional integrated coating contains the following raw materials by weight: 8-14 parts of mixed resin; 7-13 parts of lubricating filler; 0.5 to 1.5 parts of reinforcing filler; 70-80 parts of dispersion medium; Wherein, the mixed resin is a combination of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyethersulfone resin, acrylic resin and polyurethane resin; The lubricating filler is a composition of polytetrafluoroethylene and molybdenum disulfide; The reinforcing filler is a composition of nano-lanthanum trifluoride and nano-cerium oxide; The dispersion medium is a mixture of chloroform and trichloroethane.

2. The room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating according to claim 1, characterized in that: In the mixed resin, the mass ratio of the polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin is (0.15-0.3):(0-0.05):(0.75-1.25):(0-1), and the polyvinyl butyral resin and alkyd resin cannot be 0 at the same time, or the mass ratio of the polyethersulfone resin, acrylic resin and polyurethane resin is (0.15-0.3):(0.1-0.2):(0.75-1.25).

3. The room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating according to claim 1, characterized in that: In the lubricating filler, the mass ratio of polytetrafluoroethylene to molybdenum disulfide is (0.6-1.2): (0.03～0.06)； Or / and, in the reinforcing filler, the mass ratio of the nano-lanthanum trifluoride to the nano-cerium oxide is (0.2-0.6):(0.4-0.8).

4. The room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating according to claim 1, characterized in that: The intrinsic viscosity of the polyethersulfone resin is 0.3dL / g; or / and, the viscosity of the acrylic resin is 150-250s, the acid value is ≤6, and the solid content is 50%; or / and, the NCO content of the polyurethane resin is 6-8%; or / and, the relative density of the polyvinyl butyral resin is 1.07-1.08g / cm 3 ; or / and, the viscosity of the alkyd resin is 17 to 25s, and the acid value is ≤8; or / and, the purity of the polytetrafluoroethylene is greater than 99%, or / and its particle size is 2 to 5 microns; or / and, the purity of the molybdenum disulfide is greater than 99%; or / and, the purity of the nano lanthanum trifluoride is greater than 99%, or / and its particle size is 40nm; or / and, the particle size of the nano cerium oxide is 20 to 50nm.

5. The room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating according to any one of claims 1 to 4, characterized in that: In the dispersion medium, the volume ratio of chloroform to trichloroethane is (0.5-1.5):(0.5-1.5).

6. The method for preparing the room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: (S1) mixing and dissolving a polyethersulfone resin and a dispersion medium to obtain a polyethersulfone resin solution; (S2) mixing polytetrafluoroethylene, nano-lanthanum trifluoride, nano-cerium oxide, molybdenum disulfide and a dispersion medium, and grinding and dispersing the mixture to obtain a functional filler slurry; (S3) The polyethersulfone resin solution obtained in step (S1), the functional filler slurry obtained in step (S2) and the acrylic resin or polyvinyl butyral resin are uniformly mixed by mechanical shearing and stirring, and then sequentially mixed with a polyurethane resin and a dispersion medium, or sequentially mixed with a polyurethane resin, an alkyd resin and a dispersion medium to obtain a room temperature quick-drying, lubricating, wear-resistant and anti-corrosion functional integrated coating.

7. The preparation method according to claim 6, characterized in that: The mass ratios of the dispersion medium used in steps (S1), (S2) and (S3) are (1-3):(6-7):(1-2) respectively.

8. A coating obtained from the room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating as claimed in any one of claims 1 to 5.

9. The method for preparing a coating according to claim 8, characterized in that: The method includes: The room temperature quick-drying lubricating, wear-resistant and anti-corrosion integrated coating as claimed in any one of claims 1 to 5 is applied to the surface of the mechanical parts to be protected by spraying or brushing, and the coating is obtained after curing; the curing environment is an atmospheric room temperature environment, and the surface drying time is ≤10min; Wherein, when the spraying method is adopted, the pressure is adjusted to 0.05-0.15 MPa, and the spraying is performed 3-5 times to reach a thickness of 20-40 microns; When the brushing method is adopted, the coating is applied 1 to 2 times to reach a thickness of 20 to 40 microns. After each brushing, the coating surface is dried before the next brushing.

10. Use of the room temperature quick-drying lubricating, wear-resistant and anti-corrosion functional integrated coating as claimed in any one of claims 1 to 5 or the coating as claimed in claim 8 in mechanical equipment serving in a marine environment.

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