A room-temperature quick-drying type lubricating wear-resistant anticorrosion function integrated coating, coating and preparation method

Abstract

The application discloses a room-temperature quick-drying type lubricating wear-resistant corrosion-resistant function integrated coating, a coating and a preparation method. The function integrated coating comprises the following raw materials in mass fractions: 8-14 parts of mixed resin; 7-13 parts of lubricating filler; 0.5-1.5 parts of reinforcing filler; and 70-80 parts of dispersion medium. The mixed resin is a combination of polyether sulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin, or a combination of polyether sulfone 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 trichloromethane and trichloroethane. The coating has the functions of lubrication, wear resistance, corrosion resistance, weather resistance, mold resistance and the like, the salt mist resistance is improved to 240 hours or more, and the wear life is greater than or equal to 60 minutes and the friction coefficient is less than or equal to 0.15 under the conditions of high load and high speed.

Description

Technical Field

[0001] This invention relates to a wear-resistant and anti-corrosion coating, specifically to a room-temperature fast-drying, lubricating, wear-resistant, and anti-corrosion integrated coating, coating layer, and preparation method. Background Technology

[0002] Compared to land-based equipment, marine engineering equipment components are exposed to the high-salt, high-humidity marine environment for extended periods. In addition to enduring prolonged and severe corrosion, they must also withstand the combined effects of impact, vibration, friction and wear, alternating wet and dry conditions, and mold growth. These harsher operating conditions result in a significantly shorter service life compared to land-based equipment. Damage to critical components under multi-factor conditions, especially wear and corrosion, has become a key common challenge restricting the efficient, stable, and long-term service life of modern marine engineering equipment.

[0003] Functional coatings play a crucial role in addressing wear and corrosion issues in marine machinery due to their high cost-effectiveness and ease of application. For example, the Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, has filed a Chinese patent (CN112521836A) disclosing a fast-drying, lubricating / wear-resistant, and corrosion-resistant integrated aluminum coating for fasteners. This coating utilizes different shapes (mainly spherical and flake-like structures) of various lubricating and wear-resistant fillers and aluminum powder, along with their embedding and entanglement with the base resin molecular chains, to construct a three-dimensional, shielding structure. When external factors (including corrosive media and loads) diffuse into the coating, the flake-like aluminum powder and polytetrafluoroethylene (PTFE) provide excellent shielding, preventing the corrosive media from diffusing into the coating. Simultaneously, PTFE exhibits excellent lubrication properties, while the spherical aluminum powder and rare earth fluorides (nano-lanthanum trifluoride) embedded within the resin possess excellent load-bearing capacity and wear resistance. Therefore, this three-dimensional shielding structure ensures that the coating combines lubrication / wear resistance with corrosion protection. The coating produced by this patent exhibits good adhesion, high mechanical strength, good resistance to paint removers and fluids, and excellent lubrication, wear resistance, and corrosion protection. Furthermore, the coating dries quickly at room temperature and is easy to apply. This coating is primarily used on the internal threads of fasteners and nuts. However, because it requires high-temperature curing after application, its application is limited in special outdoor environments where high-temperature curing conditions are difficult to provide.

[0004] The multi-factor changes and dynamic coupling of the marine environment have a highly complex impact on materials, and protection against wear and corrosion in marine environments remains an international challenge. Currently, most domestic and international technologies for such materials are limited to research on the tribological or corrosive properties of specific materials under specific conditions and environments. Their design and performance control focus on single properties, lacking comprehensive consideration of the coexistence and unity of properties such as lubrication, wear resistance, and corrosion prevention. Furthermore, there are instances where these properties mutually restrict each other. The comprehensive lubrication, wear resistance, and corrosion resistance properties of existing functional coating materials are still insufficient to meet the application requirements of new equipment.

[0005] Therefore, developing room temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coatings can provide material and technical support for solving the wear and corrosion problems of moving parts of mechanical equipment serving in marine environments, especially the maintenance challenges in outdoor environments, and thus solving the bottleneck problems restricting the reliability and lifespan of modern marine engineering equipment.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to provide a room temperature fast-drying coating, coating layer and preparation method that integrates lubrication, wear resistance and corrosion protection functions. It solves the problem that existing materials are difficult to meet the requirements of simultaneously possessing lubrication, wear resistance and corrosion protection properties. It takes into account functions such as lubrication, wear resistance, corrosion protection, weather resistance and mildew resistance. It improves the salt spray resistance of existing lubricating coatings from 100h to more than 240h. At the same time, it achieves wear life ≥60min and friction coefficient ≤0.15 under high load and high speed conditions.

[0008] To achieve the above objectives, the present invention provides a room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating, which comprises the following raw materials in parts by weight:

[0009] Mixed resin 8-14 parts;

[0010] 7-13 parts of lubricating filler;

[0011] 0.5 to 1.5 parts of reinforcing filler;

[0012] 70-80 parts of dispersion medium.

[0013] 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.

[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 both be 0, 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 polyethersulfone resin has a viscosity of 0.3 dL / g; or / and the acrylic resin has a viscosity of 150–250 s, an acid value ≤6, and a solid content of 50%; or / and the polyurethane resin has an NCO content of 6–8%; or / and the polyvinyl butyral resin has a relative density of 1.07–1.08 g / cm³. 3 ; or / and, the alkyd resin has a viscosity of 17-25s and an acid value ≤8; or / and, the polytetrafluoroethylene has a purity greater than 99% and / or a particle size of 2-5 micrometers; or / and, the molybdenum disulfide has a purity greater than 99%; or / and, the nano lanthanum trifluoride has a purity greater than 99% and / or a particle size of 40nm; or / and, the nano cerium oxide has a particle size of 20-50nm.

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

[0018] A second objective of this invention is to provide a method for preparing the aforementioned room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating, the method comprising the following steps:

[0019] (S1) Mix and dissolve the polyethersulfone resin and the dispersion medium to obtain a polyethersulfone resin solution;

[0020] (S2) Polytetrafluoroethylene, nano-lanthanum trifluoride, nano-cerium oxide, molybdenum disulfide and dispersion medium are mixed, and the mixture is ground and dispersed to obtain 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 mixed evenly by mechanical shearing and stirring. Then, they are mixed with polyurethane resin and dispersion medium in sequence, or with polyurethane resin, alkyd resin and dispersion medium in sequence, to obtain a room temperature fast-drying lubricating, wear-resistant and anti-corrosion 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).

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

[0024] A third objective of the present invention is to provide a coating obtained by the aforementioned room temperature fast-drying lubricating, wear-resistant, and corrosion-resistant integrated coating.

[0025] The fourth objective of this invention is to provide a method for preparing the aforementioned coating, comprising: applying the room-temperature fast-drying lubricating, wear-resistant, and corrosion-resistant integrated coating to the surface of mechanical parts requiring protection by spraying or brushing, and obtaining the coating after curing; wherein the curing environment is atmospheric room temperature, and the surface drying time is ≤10 min; wherein, when using the spraying method, the pressure is adjusted to 0.05~0.15MPa, and 3~5 coats are applied to achieve a thickness of 20~40 micrometers; when using the brushing method, 1~2 coats are applied to achieve a thickness of 20~40 micrometers, and the next coat is applied after each coat has dried.

[0026] The fifth objective of this invention is to provide the application of the room-temperature fast-drying lubricating, wear-resistant, and corrosion-resistant integrated coating or the coating itself in mechanical equipment serving in marine environments.

[0027] The room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating, coating layer, and preparation method of the present invention solve the problem that existing materials cannot simultaneously meet the requirements of lubrication, wear resistance, and corrosion resistance, and have the following advantages:

[0028] (1) Based on the application of multi-component resin and filler composite and mixed dispersion medium, the present invention enables the coating to have rapid drying characteristics and flame retardant characteristics at room temperature, with a surface drying time of ≤10min. It can effectively solve the problem of rapid maintenance of mechanical equipment in the field, overcome the limitations of curing conditions of thermosetting and other types of coatings, and provide storage safety.

[0029] (2) The polytetrafluoroethylene introduced in this invention has low shear properties and low surface energy properties, which not only provides excellent lubrication performance 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 shielding performance, but also improves the coating's load-bearing capacity.

[0030] (3) The nano lanthanum trifluoride and nano cerium oxide introduced in this invention can be combined with lubricants to exert a synergistic enhancement effect and improve the wear resistance of the coating. Nano cerium oxide has excellent chemical corrosion inhibition properties. After water penetrates the coating, some corrosion-inhibiting fillers dissolve and can passivate with the metal surface. With the generation and accumulation of insoluble metal salts, it can act as a barrier to prevent the penetration of corrosive substances and effectively improve the corrosion resistance of the coating.

[0031] (4) The coating prepared by the room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating of the present invention breaks through the bottleneck of existing coating materials that are not able to perform multiple functions in marine environment. It can take into account lubrication, wear resistance, corrosion resistance, weather resistance and mildew resistance, and improve the salt spray resistance of existing lubricating coatings from 100h to more than 240h. At the same time, it achieves wear life ≥60min and friction coefficient ≤0.15 under high load and high speed conditions. Attached Figure Description

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

[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 These are the coating anti-mildew test specimen (a), marine environment exposure specimen (b), and friction coefficient curve (c) prepared in Example 4 of this invention.

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

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that: for conditions not specifically specified in the examples, standard conditions or conditions recommended by the manufacturer should be followed. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0039] In this invention, all features defined by numerical ranges or percentage ranges, such as numerical values, quantities, contents, and concentrations, are used for simplicity and convenience only. Accordingly, descriptions of numerical ranges or percentage ranges should be considered as covering and specifically disclosing all possible secondary ranges and individual numerical values ​​(including integers and fractions) within those ranges.

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

[0041] This invention provides a room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating, coating layer, and preparation method, wherein the integrated functional coating comprises the following raw materials in parts by weight:

[0042] Mixed resin 8-14 parts;

[0043] 7-13 parts of lubricating filler;

[0044] 0.5 to 1.5 parts of reinforcing filler;

[0045] 70-80 parts of dispersion medium.

[0046] 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 fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating of this invention is a suspension liquid. It should be thoroughly stirred or shaken before use. The coating is applied to the surface of mechanical parts requiring protection using either spraying or brushing. Because this coating is fast-drying, the pressure should be adjusted to 0.05–0.15 MPa during spraying. 3–5 spray coats are sufficient to achieve a thickness of 20–40 micrometers; 1–2 brush coats are sufficient to achieve a thickness of 20–40 micrometers. Each brush coat dries quickly (within 5 minutes). The coating can be used after it is surface 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 with NCO content of 6-8%, provided by Shanghai Huayi Resin Co., Ltd.

[0052] (4) Polyvinyl butyral resin: relative density 1.07~1.08 g / cm³ 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 2-5 micrometers;

[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 organosilicon resin are the same as the substances with the same names in publication number CN112521836A.

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

[0060] Example 1

[0061] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating comprises the following raw materials in parts by weight:

[0062] 12.8 parts of mixed resin

[0063] 9.4 parts of lubricating filler

[0064] 0.67 parts of reinforcing filler

[0065] 79 parts of dispersion medium.

[0066] The aforementioned mixed resin is a composition of polyethersulfone resin, acrylic resin, and polyurethane resin, wherein the mass ratio of polyethersulfone resin, acrylic resin, and polyurethane resin is 0.25:0.1:1.25.

[0067] The aforementioned lubricating filler is a composition of polytetrafluoroethylene (PTFE) and molybdenum disulfide, with a mass ratio of PTFE to molybdenum disulfide of 0.675:0.03.

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

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

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

[0071] (S1) Mix 20g of polyethersulfone resin and 200g of dispersion medium (obtained by uniformly mixing chloroform and chloroethane in a volume ratio of 1:1) and stir to dissolve to obtain a polyethersulfone resin solution.

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

[0073] (S3) Mix 220g of polyethersulfone resin solution, 8g of acrylic resin, and 570.7g of functional filler slurry prepared in step (S2) by mechanical shearing and stirring at 5000r / min for 60s until homogeneous. Then mix them with 100g of polyurethane resin and 120g of dispersion medium (obtained by uniformly mixing chloroform and trichloroethane in a volume ratio of 1:1) to obtain a room temperature fast-drying lubricating, wear-resistant, and anti-corrosion integrated coating.

[0074] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating was brushed onto a clean substrate surface. After brushing, the coating was allowed to dry at room temperature, resulting in a lubricating, wear-resistant, and corrosion-resistant integrated coating with a thickness of approximately 30 μm.

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

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

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

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

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

[0080] 5) Determination of acid and salt spray resistance: The test shall be conducted in accordance with the method specified in GJB 150.11A, and the pH of the salt solution shall be adjusted to 3.5±0.3 with concentrated sulfuric acid;

[0081] 6) Tribological properties of coating: The tribological properties of the coating were measured on a pin-disc friction and wear tester. The friction material was a 12mm diameter GCr15 steel ball, the frequency was 10Hz, the friction coefficient was based on the average friction coefficient, and the wear life was expressed as the time it took for the coating to wear through.

[0082] 7) Test of coating resistance to mold: in accordance with GJB 150.10A;

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

[0084] Experimental results: In this embodiment, the coating surface drying time was 6 minutes, the coating adhesion was grade 0, the flexibility was 1 mm, the impact resistance was 50 cm, the acid salt spray resistance was greater than 360 hours, the coating friction coefficient was 0.11, the wear life was greater than 65 minutes, the mold resistance grade was grade 0 after 1 month of mold testing, and the marine environment exposure test was ≥6 months (see...). Figure 1 ).

[0085] Example 2

[0086] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating comprises the following raw materials in parts by weight:

[0087] 12.8 parts of mixed resin

[0088] 9.4 parts of lubricating filler

[0089]

[0090] The composition and dosage of each component are basically the same as 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 fast-drying lubricating, wear-resistant, and anti-corrosion integrated coating in this embodiment is basically the same as that in Example 1, except that:

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

[0095] The coating was prepared using the room temperature fast-drying lubricating, wear-resistant and corrosion-resistant integrated coating of this embodiment. The preparation method of the lubricating, wear-resistant and corrosion-resistant integrated coating is the same as that of Example 1.

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

[0097] Experimental results: In this embodiment, the coating surface drying time was 5 min, the coating adhesion was grade 0, the flexibility was 1 mm, the impact resistance was 50 cm, the acid salt spray resistance reached 280 h, the coating friction coefficient was 0.12, and the wear life was 65 min (see...). Figure 2 ).

[0098] Example 3

[0099] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating comprises the following raw materials in parts by weight:

[0100]

[0101] The composition and dosage of each component are basically the same as in Example 1, except that:

[0102] In the above-mentioned 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 fast-drying lubricating, wear-resistant, and anti-corrosion integrated coating in this embodiment is basically the same as that in Example 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 coating was prepared using the room temperature fast-drying lubricating, wear-resistant and corrosion-resistant integrated coating of this embodiment. The preparation method of the lubricating, wear-resistant and corrosion-resistant integrated coating is the same as that of Example 1.

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

[0108] Experimental results: In this embodiment, the coating surface drying time was 6 minutes, the coating adhesion was grade 0, the flexibility was 1 mm, the impact resistance was 50 cm, the acid salt spray resistance reached 380 hours, the coating friction coefficient was 0.1, and the wear life was greater than 60 minutes (see...). Figure 3 ).

[0109] Example 4

[0110] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating comprises the following raw materials in parts by weight:

[0111] 12.12 parts of mixed resin

[0112] 9.4 parts of lubricating filler

[0113] 0.67 parts of reinforcing filler

[0114] 79 parts of dispersion medium.

[0115] The composition and dosage of each component are basically the same as in Example 1, except that:

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

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

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

[0119] The coating was prepared using the room temperature fast-drying lubricating, wear-resistant and corrosion-resistant integrated coating of this embodiment. The preparation method of the lubricating, wear-resistant and corrosion-resistant integrated coating is the same as that of Example 1.

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

[0121] Experimental results: In this embodiment, the coating surface drying time was 8 minutes, the coating adhesion was grade 0, the flexibility was 1 mm, the impact resistance was 50 cm, the acid salt spray resistance reached 300 hours, the coating friction coefficient was 0.09, the wear life was greater than 65 minutes, the mold resistance grade was grade 0 after 1 month of mold testing, and the marine environment exposure test was ≥6 months (see...). Figure 4 ).

[0122] Example 5

[0123] A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating comprises the following raw materials in parts by weight:

[0124] 12.12 parts of mixed resin

[0125] 9.4 parts of lubricating filler

[0126] 0.67 parts of reinforcing filler

[0127]

[0128] The composition and dosage of each component are basically the same as in Example 4, except that:

[0129] In the above-mentioned 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 fast-drying lubricating, wear-resistant, and corrosion-resistant integrated coating in this embodiment is basically the same as that in Example 4, except that:

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

[0132] The coating was prepared using the room temperature fast-drying lubricating, wear-resistant and corrosion-resistant integrated coating of this embodiment. The preparation method of the lubricating, wear-resistant and corrosion-resistant integrated coating is the same as that of Example 1.

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

[0134] Experimental results: In this embodiment, the coating surface drying time was 8 minutes, the coating adhesion was grade 0, the flexibility was 1 mm, the impact resistance was 50 cm, the acid salt spray resistance reached 360 hours, the coating friction coefficient was 0.05, and the wear life was greater than 65 minutes (see...). Figure 5).

[0135] Comparative Example 1

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

[0137]

[0138] The composition and dosage of each component are basically the same as in Example 1, except that:

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

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

[0141] In step (S1), 90g of epoxy resin, 30g of phenolic resin and 1.5g of silicone resin are added to 200g of dispersion medium and ultrasonically stirred at room temperature until completely dissolved to obtain a dissolved resin system. In step (S3), 120.25g of the resin system obtained in step (S1), 570.5g of the functional filler slurry obtained in step (S2) and 100g of dispersion medium are mechanically sheared and stirred at a speed of 5000r / min for 60s to obtain a room temperature fast-drying coating.

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

[0143] The method for testing the surface dryness of the coating is the same as in Example 1.

[0144] The coating prepared in Comparative Example 1 had a surface drying time of 60 seconds, and the coating did not cure completely inside after being placed at room temperature for 24 hours.

[0145] Comparative Example 2

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

[0147] 12.8 parts of mixed resin

[0148] 9.4 parts of lubricating filler

[0149] 0.67 parts of reinforcing filler

[0150] 79 parts of dispersion medium.

[0151] The composition and dosage of each component are basically the same as in Example 1, except that:

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

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

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

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

[0156] In the preparation of the coating in Comparative Example 2, the dispersion medium had poor compatibility with the resin system in Example 1, resulting in gelation and clumping during the coating preparation process, making it difficult to form. Furthermore, anhydrous ethanol, methyl ethyl ketone (MEK), and toluene are all flammable and explosive organic solvents, making it difficult for the prepared coating to possess flame-retardant properties.

[0157] Comparative Example 3

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

[0159] 10 parts resin;

[0160] 9.4 parts of lubricating filler;

[0161] 0.67 parts of reinforcing filler;

[0162] 57 portions of dispersion medium.

[0163] The composition and dosage of each component are basically the same as in Example 1, except that:

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

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

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

[0167] In step (S3), 200g of the E6 epoxy resin solution obtained in step (S1) and 570.5g of the functional filler slurry obtained in step (S2) are mechanically sheared and stirred at a speed of 5000r / min for 60s to obtain a room temperature fast-drying coating.

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

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

[0170] Experimental results: The coating prepared in Comparative Example 3 had a surface drying time of 30 min, an adhesion grade of 4, and a flexibility of 5 mm. It can be seen that the coating adhesion and flexibility of Comparative Example 3 are worse than those of the coating in Example 1.

[0171] Comparative Example 4

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

[0173] 12.8 parts of mixed resin

[0174] 9.4 parts of lubricating filler

[0175] 0.2 parts of reinforcing filler

[0176] 79 parts of dispersion medium.

[0177] The composition and dosage of each component are basically the same as in Example 1, except that:

[0178] The aforementioned reinforcing filler is nano-lanthanum trifluoride.

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

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

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

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

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

[0184] Comparative Example 5

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

[0186] 12.8 parts of mixed resin

[0187] 9.4 parts of lubricating filler

[0188] 0.2 parts of reinforcing filler

[0189] 79 parts of dispersion medium.

[0190] The composition and dosage of each component are basically the same as in Example 1, except that:

[0191] The aforementioned lubricating filler is made of polytetrafluoroethylene.

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

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

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

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

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

[0197] Comparative Example 6

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

[0199] 12 parts of mixed resin

[0200] 9.4 parts of lubricating filler

[0201] 0.67 parts of reinforcing filler

[0202] 79 parts of dispersion medium.

[0203] The composition and dosage of each component are basically the same as in Example 1, except that:

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

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

[0206] In step (S3), 220g of the resin system obtained in step (S1) and 570.5g of the functional filler slurry obtained in step (S2) are mechanically sheared and stirred at a speed of 5000r / min for 60s to mix evenly. Then, it is mixed with 100g of polyurethane resin and 120g of dispersion medium (obtained by uniformly mixing trichloromethane and trichloroethane in a volume ratio of 1:1) to obtain a room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating.

[0207] In the preparation process of the coating in Comparative Example 6, after the polyurethane resin was added in step (S3), the coating exhibited a gel-caking phenomenon.

[0208] Comparative Example 7

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

[0210] 12.12 parts of mixed resin

[0211] 9.4 parts of lubricating filler

[0212] 0.67 parts of reinforcing filler

[0213] 79 parts of dispersion medium.

[0214] The composition and dosage of each component are basically the same as in Example 4, except that:

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

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

[0217] In step (S3), 220g of the resin system obtained in step (S1) and 570.5g of the functional filler slurry obtained in step (S2) are mechanically sheared and stirred at a speed of 5000r / min for 60s to mix evenly. Then, it is mixed with 100g of polyurethane resin and 120g of dispersion medium (obtained by uniformly mixing trichloromethane and trichloroethane in a volume ratio of 1:1) to obtain a room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating.

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

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

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

[0221] Comparative Example 8

[0222] The composition and dosage of each component are the same as in Example 1, except that:

[0223] (S3) Mix 220g of polyethersulfone resin solution, 8g of acrylic resin and 100g of polyurethane resin obtained in step (S1), and then mix them with 570.7g of functional filler slurry obtained in step (S2) under mechanical shearing and stirring at a speed of 5000r / min for 60s until they are uniformly mixed. Then add 120g of dispersion medium (obtained by uniformly mixing trichloromethane and trichloroethane in a volume ratio of 1:1) and mix to obtain a room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating.

[0224] Using the preparation method of Comparative Example 8, the coating produced a large amount of foam, the compatibility between the filler and the resin system deteriorated, and the coating was not applied evenly.

[0225] In summary, the coating of the present invention combines functions such as lubrication, wear resistance, corrosion prevention, weather resistance, and mildew resistance, improving the salt spray resistance of existing lubricating coatings from 100h to over 240h, while achieving a wear life of ≥60min and a friction coefficient of ≤0.15 under high load and high speed conditions.

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

Claims

1. A room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating, characterized in that, This integrated coating contains the following raw materials in parts by weight: Mixed resin 8-14 parts; 7-13 parts of lubricating filler; 0.5~1.5 parts of reinforcing filler; 70-80 parts of dispersion medium; The mixed resin is a mixture of polyethersulfone resin, polyvinyl butyral resin, polyurethane resin and alkyd resin in a mass ratio of (0.15~0.3):(0~0.05):(0.75~1.25):(0~1), wherein the polyvinyl butyral resin and alkyd resin cannot both be 0; or the mixed resin is a mixture of polyethersulfone resin, acrylic resin and polyurethane resin in a mass ratio of (0.15~0.3):(0.1~0.2):(0.75~1.25). 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 fast-drying, lubricating, wear-resistant, and corrosion-resistant 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 and nano-cerium oxide is (0.2~0.6):(0.4~0.8).

3. The room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating according to claim 1, characterized in that, The polyethersulfone resin has an intrinsic viscosity of 0.3 dL / g; or / and the acrylic resin has a viscosity of 150~250s, an acid value ≤6, and a solid content of 50%; or / and the polyurethane resin has an NCO content of 6~8%; or / and the polyvinyl butyral resin has a relative density of 1.07~1.08 g / cm³. 3 ; or / and, the alkyd resin has a viscosity of 17~25s and an acid value ≤8; or / and, the polytetrafluoroethylene has a purity greater than 99% and / or a particle size of 2~5 micrometers; or / and, the molybdenum disulfide has a purity greater than 99%; or / and, the nano lanthanum trifluoride has a purity greater than 99% and / or a particle size of 40nm; or / and, the nano cerium oxide has a particle size of 20~50nm.

4. The room-temperature fast-drying, lubricating, wear-resistant, and corrosion-resistant integrated coating according to any one of claims 1 to 3, characterized in that, In the dispersion medium, the volume ratio of trichloromethane to trichloroethane is (0.5~1.5):(0.5~1.5).

5. The preparation method of the room temperature fast-drying integrated coating with lubricating, wear-resistant, and anti-corrosion functions as described in any one of claims 1 to 4, characterized in that, The method includes the following steps: (S1) Mix and dissolve the polyethersulfone resin and the dispersion medium to obtain a polyethersulfone resin solution; (S2) Polytetrafluoroethylene, nano-lanthanum trifluoride, nano-cerium oxide, molybdenum disulfide and dispersion medium are mixed, and the mixture is ground and dispersed to obtain 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 mixed evenly by mechanical shearing and stirring. Then, they are mixed with polyurethane resin and dispersion medium in sequence, or with polyurethane resin, alkyd resin and dispersion medium in sequence, to obtain a room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating.

6. The preparation method according to claim 5, characterized in that, The dispersion medium is used in steps (S1), (S2) and (S3) with a mass ratio of (1~3):(6~7):(1~2).

7. A coating obtained from a room temperature fast-drying lubricating, wear-resistant, and corrosion-resistant integrated coating as described in any one of claims 1 to 4.

8. The method for preparing the coating as described in claim 7, characterized in that, The method includes: The room temperature fast-drying lubricating, wear-resistant and anti-corrosion integrated coating as described in any one of claims 1 to 4 is applied to the surface of the mechanical parts that need to be protected by spraying or brushing, and the coating is obtained after curing; the curing environment is atmospheric room temperature environment, and the surface drying time is ≤10min. When using the spraying method, the pressure is adjusted to 0.05~0.15MPa, and 3~5 coats are applied to achieve a thickness of 20~40 micrometers. When using the brushing method, apply 1 to 2 coats to achieve a thickness of 20 to 40 micrometers. After each coat, wait for the coating surface to dry before applying the next coat.

9. The application of the room temperature fast-drying lubricating, wear-resistant and corrosion-resistant integrated coating as described in any one of claims 1 to 4, or the coating as described in claim 7, in mechanical equipment serving in a marine environment.

Images