Composite material modified wear-resistant anticorrosive paint and preparation method thereof

Abstract

The application relates to the technical field of paint production, and particularly discloses a composite material modified wear-resistant anticorrosive paint and a preparation method thereof, which comprises the following steps: S1, raw material preparation, wherein high-performance resin, wear-resistant fillers, anticorrosive fillers and functional additives are weighed, the wear-resistant fillers are nano-aluminum oxide, silicon carbide and diamond micro powder, and the anticorrosive fillers are zinc powder, glass flake and mica powder; S2, the weighed raw materials are added into a dispersion grinding device, and are firstly stirred and mixed. The composite material modified wear-resistant anticorrosive paint and the preparation method thereof can improve the wear resistance and the anticorrosive performance of the paint by the wear-resistant fillers and the anticorrosive fillers, such as nano-aluminum oxide, silicon carbide and diamond micro powder, so that the hardness and the wear resistance of the paint are greatly improved, various abrasions can be effectively resisted, and the service life of the coated object is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paint production, in particular to a composite material modified wear-resistant and corrosion-resistant paint and a preparation method thereof. BACKGROUND

[0002] At present, the wear resistance and corrosion resistance of materials are crucial, many devices, structures and products will face various challenges of wear and corrosion during use, which not only reduces their service life, but also may cause safety hazards and economic losses, although the traditional wear-resistant and corrosion-resistant paint can meet the demand to a certain extent, it often has problems such as insufficient performance, poor environmental protection, and difficult construction, with the continuous progress of science and technology, people's requirements for the performance of paint are getting higher and higher, the development of nanotechnology brings new opportunities to the paint industry, the nano-level wear-resistant and corrosion-resistant fillers have higher specific surface area and activity, which can significantly improve the wear resistance and corrosion resistance of the paint, at the same time, the enhancement of environmental awareness also prompts people to seek more environmentally friendly solvents and functional additives.

[0003] At present, there are various kinds of wear-resistant and corrosion-resistant paints on the market, but most of the products still have great room for improvement in performance, environmental protection and construction performance, in addition, in order to increase the fineness of the slurry after stirring and dispersing, the existing wear-resistant and corrosion-resistant paint generally needs to be separately ground during production, but the grinding and stirring and dispersing in the prior art are generally carried out separately, which not only increases the cost, but also affects the efficiency, and the multiple devices also occupy a large area, which is not convenient to use.

[0004] Therefore, it is necessary to provide a composite material modified wear-resistant and corrosion-resistant paint and a preparation method thereof to solve the above problems. SUMMARY

[0005] The main purpose of the present application is to provide a composite material modified wear-resistant and corrosion-resistant paint and a preparation method thereof, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A preparation method of a composite material modified wear-resistant and corrosion-resistant paint, comprising the following steps:

[0008] S1: raw material preparation, weighing high-performance resin, wear-resistant filler, corrosion-resistant filler and functional additive, wherein the wear-resistant filler is nano-alumina, silicon carbide and diamond powder, the corrosion-resistant filler is zinc powder, glass flake and mica powder;

[0009] Solvent preparation, the solvent is an environmentally friendly organic solvent or water;

[0010] S2: the weighed raw materials are added to the dispersion grinding device, and are first stirred and mixed to make the fillers and additives fully dispersed in the resin, the stirring time is 60-90 minutes, and the reaction condition is normal temperature and pressure;

[0011] The coating slurry after stirring and mixing is also ground by the dispersion grinding device to further refine the filler particles, the grinding time is 60-120 minutes, and the reaction condition is normal temperature;

[0012] S3: the performance of the ground coating is tested, and according to the test results, an appropriate amount of solvent and functional additive is added for adjustment;

[0013] S4: the coating with adjusted performance is treated by the ultrasonic treatment equipment to further remove the tiny impurities and bubbles, the treatment time is 10-30 minutes, and the reaction condition is normal temperature and pressure;

[0014] S5: the treated coating is filtered by the filter to remove the impurities and large particle substances, and the filtered coating is loaded into a packaging container and sealed for storage;

[0015] The dispersion grinding device comprises a dispersion cavity, a grinding cavity arranged at the bottom of the dispersion cavity, and a communication port for connecting the dispersion cavity and the grinding cavity. A stirring and dispersion mechanism is arranged on the dispersion cavity, which comprises a rotating shaft arranged vertically in the middle of the dispersion cavity, a stirring blade arranged on the side wall of the rotating shaft, and a rotating drive source arranged at the top end of the dispersion cavity for driving the rotating shaft to rotate.

[0016] A grinding mechanism is arranged on the grinding cavity, which comprises a grinding medium arranged in the inner cavity of the grinding cavity, and an agitating plate arranged at the lower end of the rotating shaft and extending into the inner cavity of the grinding cavity through the communication port.

[0017] Preferably, in step S1, the functional additive is a dispersant, a leveling agent, and a defoaming agent.

[0018] The high-performance resin is a polyurethane resin or an epoxy resin.

[0019] Preferably, in step S3, the performance test includes but is not limited to the viscosity, fineness, hardness, wear resistance, and corrosion resistance of the coating.

[0020] Preferably, a guide assembly for changing the rotating path of the stirring blade is arranged in the dispersion cavity, the guide assembly comprises a limiting ring arranged on the upper end of the inner side of the dispersion cavity, an annular limiting groove is arranged on the inner side of the limiting ring, arc-shaped undulating grooves are uniformly arranged on the upper end of the annular limiting groove, the arc-shaped undulating grooves are smoothly connected with the inner wall of the annular limiting groove, the output end of the rotating driving source is provided with a positive multi-prism rotating rod, the upper end of the rotating shaft is movably sleeved on the outer side of the rotating rod, so that the rotating shaft can be displaced along the vertical direction, the upper end side wall of the rotating shaft is provided with a traction arm corresponding to the limiting ring, the end of the traction arm away from the rotating shaft is rotatably connected with a roller for movably connecting with the annular limiting groove and the arc-shaped undulating groove.

[0021] Preferably, a sealing assembly is arranged on the inner side of the grinding cavity, the sealing assembly comprises a blocking disc arranged on the upper end of the inner cavity of the grinding cavity, a sealing plug column corresponding to the communication port and used for sealing the communication port is arranged on the top of the blocking disc, the blocking disc and the sealing plug column are movably connected on the outer side of the rotating shaft, and the blocking disc and the sealing plug column are key-connected with the rotating shaft, so that the whole of the blocking disc and the sealing plug column can only be displaced along the axial direction of the rotating shaft.

[0022] An annular sealing air bag is arranged on the peripheral side of the blocking disc, and the annular sealing air bag is elastic, a through groove corresponding to and matched with the stirring plate is arranged on the inner periphery of the top of the blocking disc, a cavity communicating with the annular sealing air bag and corresponding to the through groove is arranged on the inner side of the periphery of the blocking disc, a plug plate is movably connected on the inner side of the cavity, a stress sliding block extending into the inner side of the through groove is arranged on the side of the plug plate away from the cavity, slope surfaces are arranged on the upper and lower ends of the stirring plate, a vertical part is formed between the two slope surfaces, and the stirring plate is movably connected with the through groove, so that when the slope surfaces press the stress sliding block, the plug plate can be displaced towards the annular sealing air bag, there is a gap between the annular sealing air bag and the inner wall of the grinding cavity when the stress sliding block corresponds to the slope surfaces, the annular sealing air bag is in close contact with the inner wall of the grinding cavity when the stress sliding block is located in the vertical part between the two slope surfaces, and the configuration is that the stress sliding block corresponds to the vertical part between the two slope surfaces when the sealing plug column is separated from the communication port.

[0023] Preferably, a driving assembly for driving the sealing assembly to ascend and descend is arranged on the upper end of the sealing assembly, the driving assembly comprises a lifting scraper ring movably connected with the inner wall of the dispersion cavity, a guide rod extending to the inner side of the grinding cavity is vertically arranged on the bottom of the lifting scraper ring, a traction ring is fixedly arranged on the bottom of the guide rod, a traction frame is rotatably connected with the bottom of the traction ring, and the bottom of the traction frame is fixed on the top of the blocking disc, a linear driving source for driving the lifting scraper ring to ascend and descend is arranged on the top of the dispersion cavity.

[0024] Preferably, a discharge port is arranged on the bottom of the grinding cavity, and a valve is arranged on the discharge port.

[0025] The inner lower end of the grinding cavity is provided with a gas blowing mechanism for pushing the slurry and the grinding medium upward, the gas blowing mechanism comprises a plug disc vertically movably connected to the inner lower end of the grinding cavity, and the bottom of the rotating shaft is rotationally connected to the middle part of the top of the plug disc, a plurality of through holes are vertically and penetratingly provided on the plug disc, the longitudinal section of the through holes is in an inverted conical shape, a sealing ball is provided inside the through hole for sealing the through hole, the upper end of the through hole is provided with a fixing frame, a first elastic member is arranged between the bottom of the fixing frame and the top of the sealing ball, and the lower end side wall of the grinding cavity is provided with a one-way air inlet valve located at the bottom of the plug disc.

[0026] Preferably, the inner lower end of the grinding cavity is provided with a base frame, and the top of the base frame is provided with a top pin corresponding to the through hole and having a diameter smaller than the inner diameter of the through hole.

[0027] The inner upper end of the dispersion cavity is fixedly provided with a fixed ring located above the limiting ring, the limiting ring is vertically movably connected to the upper end inner wall of the dispersion cavity, a second elastic member is arranged between the bottom of the fixed ring and the top of the limiting ring, and the lifting scraper ring and the bottom of the limiting ring are in contact in the initial state, so that the second elastic member is in a contracted state, and at this time, there is a gap between the top of the top pin and the bottom of the plug disc, when the second elastic member is in a reset state, the top of the top pin is in contact with the bottom of the sealing ball, and a gap is formed between the sealing ball and the inner wall of the through hole.

[0028] Preferably, the plug disc is provided with a relief hole penetratingly arranged thereon, and the inner upper end of the relief hole is provided with an elastic film.

[0029] The upper end of the grinding cavity is provided with a one-way air outlet valve.

[0030] Also included is an embodiment, a composite material modified wear-resistant anticorrosive coating prepared by a composite material modified wear-resistant anticorrosive coating preparation method.

[0031] Compared with the prior art, the present application provides a composite material modified wear-resistant anticorrosive coating and a preparation method thereof, which has the following beneficial effects:

[0032] 1. The composite material modified wear-resistant anticorrosive coating and the preparation method thereof, by setting the wear-resistant filler and the anticorrosive filler, such as nano-aluminum oxide, silicon carbide, diamond powder, etc., the wear resistance and corrosion resistance of the coating are improved, the hardness and wear resistance of the coating are greatly improved, various wear can be effectively resisted, and the service life of the coated object is prolonged, at the same time, the environment-friendly solvent and functional additives are selected, the pollution to the environment is reduced, an ultrasonic treatment process is added, the coating is treated by ultrasonic before filtration and packaging, further removing the tiny impurities and bubbles, and improving the quality of the coating.

[0033] 2. The composite modified wear-resistant anticorrosive coating and its preparation method, wherein the dispersion and grinding device is provided, the stirring dispersion and grinding are combined, the fillers and additives are fully dispersed in the resin, the fineness and uniformity of the coating are improved, the separate process is not needed, the efficiency is improved, and the cost is saved.

[0034] Based on the above, the rotating path of the stirring blade can be continuously changed during stirring and dispersion through the guide assembly, thereby improving the stirring and dispersion effect.

[0035] The sealing assembly cooperates with the driving assembly to seal the communication port and the grinding cavity, the communication port is opened during discharging, then the grinding cavity is sealed, the ground coating in the grinding cavity is discharged, and the mixed slurry in the dispersion cavity falls down, so that the efficiency is improved.

[0036] The air blowing mechanism is provided, the slurry and grinding medium deposited at the bottom can be continuously pushed upward during grinding, the contact opportunity of the slurry and the grinding medium is increased, the grinding effect is improved, the linkage is provided, the structure is compact, and the use is convenient, and the second elastic member and the thimble are provided to unseal the through hole during discharging, so that the material can fall and be discharged. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the preparation method flow chart of the present application;

[0038] Figure 2 It is a structure schematic diagram of the dispersion and grinding device of the present application;

[0039] Figure 3 It is a cross-sectional structure schematic diagram of the dispersion and grinding device of the present application;

[0040] Figure 4 It is the structure schematic diagram of the present application Figure 3 The structure inside the dispersion cavity is highlighted on the basis;

[0041] Figure 5 It is the structure schematic diagram of the present application Figure 3 The structure inside the grinding cavity is highlighted on the basis;

[0042] Figure 6 It is a structure schematic diagram of the present application after the dispersion cavity and the grinding cavity are removed;

[0043] Figure 7 It is a structure schematic diagram of the present application of the plug disc and the thimble;

[0044] Figure 8 It is a structure schematic diagram of the present application of the sealing ball and the through hole in the disassembled state;

[0045] Figure 9 It is a structure schematic diagram of the present application of the limiting ring and the rotating shaft in the disassembled state;

[0046] Figure 10 is the overall structure schematic diagram of the limiting ring and the fixing ring of the application;

[0047] Figure 11 is the structure schematic diagram of the plugging disc, the sealing plug column, the rotating shaft and the stirring plate in the cooperation state;

[0048] Figure 12 is the structure schematic diagram of the plugging disc in another perspective; Figure 11

[0049] Figure 13 is the structure schematic diagram of the sealing plug column and the positioning ring in the disassembled state;

[0050] Figure 14 is the overhead cross-sectional structure schematic diagram of the plugging disc;

[0051] Figure 15 is the structure schematic diagram of the rotating rod and the rotating shaft in the disassembled state.

[0052] In the figure: 1, dispersion cavity; 2, grinding cavity; 3, communication port; 4, feeding port; 5, rotary driving source; 6, linear driving source; 7, guide rod; 8, discharge port; 9, one-way exhaust valve; 10, one-way air inlet valve; 11, rotating shaft; 12, plug disc; 13, plugging disc; 14, limiting ring; 15, stirring blade; 16, lifting scraper ring; 17, fixing ring; 18, grinding medium; 19, traction ring; 20, base frame; 21, thimble; 22, fixing frame; 23, through hole; 24, sealing ball; 25, first elastic member; 26, sealing plug column; 27, second elastic member; 28, annular limiting groove; 29, arc-shaped undulating groove; 30, traction frame; 31, annular sealing air bag; 32, elastic film; 33, positioning ring; 34, avoiding hole; 35, slope surface; 36, through groove; 37, positioning block; 38, positioning groove; 39, cavity; 40, plug plate; 41, force receiving sliding block; 42, rotating rod; 43, traction arm; 44, roller; 45, stirring plate. DETAILED DESCRIPTION

[0053] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in combination with specific embodiments.

[0054] As shown in the figure, a preparation method of a composite material modified wear-resistant anticorrosive coating, comprising the following steps: Figure 1 Step 1: raw material preparation, a certain amount of high-performance resin, wear-resistant filler, anticorrosive filler and functional additive are weighed by using an electronic balance, wherein the high-performance resin is polyurethane resin or epoxy resin;

[0055]

[0056] ​​Specifically, the epoxy resin: through chemical modification, increase the active group, improve the compatibility and stability of the filler, accounting for 30%-40% of the total mass. Polyurethane resin: can be mixed with epoxy resin according to the demand, when need higher flexibility, can appropriately increase the proportion of polyurethane resin, accounting for 10%-20% of the total mass.

[0057] Wear-resistant filler is nano alumina, silicon carbide, diamond powder, wherein, nano alumina: accounting for 10%-15% of the total mass, improve the hardness and wear resistance of the coating; silicon carbide: accounting for 5%-10% of the total mass, further enhance the wear resistance; diamond powder: a small amount of addition, accounting for 1%-3% of the total mass, greatly improve the wear resistance of the coating.

[0058] Anti-corrosion filler is zinc powder, glass flake, mica powder, wherein, zinc powder: accounting for 10%-15% of the total mass, enhance the corrosion resistance; glass flake: accounting for 10%-15% of the total mass, improve the impermeability and corrosion resistance of the coating; mica powder: accounting for 5%-10% of the total mass, auxiliary anticorrosion.

[0059] Functional additives are dispersants, leveling agents, defoamers, wherein, dispersants: accounting for 1%-2% of the total mass, ensure the uniform dispersion of the filler; leveling agent: accounting for 1%-2% of the total mass, improve the leveling property of the coating; defoamer: accounting for 0.5%-1% of the total mass, eliminate the bubbles in the coating.

[0060] The solvent is prepared, and the solvent is preferably an environmentally friendly organic solvent or water, accounting for 10%-20% of the total mass;

[0061] Step 2: the weighed raw materials are added to the dispersion grinding device, and are stirred and mixed at a certain speed to make the fillers and additives fully dispersed in the resin, the stirring time is 60-90 minutes, and the reaction condition is normal temperature and pressure;

[0062] The coating slurry after stirring and mixing is also ground by the dispersion grinding device to further refine the filler particles and improve the fineness and uniformity of the coating, the grinding time is 60-120 minutes, and the reaction condition is normal temperature;

[0063] Step 3: the performance of the ground coating is tested, including but not limited to the viscosity, fineness, hardness, wear resistance and corrosion resistance of the coating, and according to the test results, an appropriate amount of solvent and functional additives are added for adjustment to meet the performance requirements of the coating;

[0064] Step 4: the coating with adjusted performance is treated by ultrasonic treatment equipment to further remove small impurities and bubbles, the treatment time is 10-30 minutes, and the reaction condition is normal temperature and pressure;

[0065] Step 5: The treated paint is filtered through a filter to remove impurities and large particles, and the filtered paint is filled into a packaging container and sealed for storage.

[0066] The above method significantly improves wear resistance: the synergistic effect of wear-resistant fillers such as nano-alumina, silicon carbide, and diamond micro-powder greatly improves the hardness and wear resistance of the paint, effectively resisting various wear and tear.

[0067] The corrosion resistance is enhanced: the combination of corrosion-resistant fillers such as zinc powder, glass flake, and mica powder improves the permeability and corrosion resistance of the coating, extending the service life of the coated object.

[0068] The construction performance is improved: the use of functional additives such as dispersants, leveling agents, and defoamers makes the paint easy to disperse, level well, and free of defects such as air bubbles during construction, improving construction efficiency and quality.

[0069] At the same time, environmentally friendly solvents and functional additives are selected to reduce environmental pollution, and an ultrasonic treatment process is added to further remove small impurities and bubbles, improving the quality of the paint.

[0070] As shown in Figures 2-6 , for the dispersion grinding device, as an embodiment, the dispersion grinding device includes a dispersion cavity 1, a grinding cavity 2 arranged at the bottom of the dispersion cavity 1, a discharge port 8 arranged at the bottom of the grinding cavity 2, and a valve arranged on the discharge port 8, a feed port 4 arranged at the top of the dispersion cavity 1, a communication port 3 communicating between the dispersion cavity 1 and the grinding cavity 2, a stirring and dispersing mechanism arranged on the dispersion cavity 1, the stirring and dispersing mechanism including a rotating shaft 11 vertically arranged in the middle of the dispersion cavity 1, a stirring blade 15 arranged on the side wall of the rotating shaft 11, a rotating drive source 5 arranged at the top end of the dispersion cavity 1 for driving the rotating shaft 11 to rotate, the rotating drive source 5 being preferably an electric motor, a grinding mechanism arranged on the grinding cavity 2, the grinding mechanism including grinding media 18 arranged in the inner cavity of the grinding cavity 2, preferably zirconia beads or glass beads, and the lower end of the rotating shaft 11 extending to the inner cavity of the grinding cavity 2 through the communication port 3 and being provided with an agitating plate 45.

[0071] Further, as shown in Figures 3-4 , Figure 6 , Figures 9-10 , Figure 15As shown, the dispersion cavity 1 is provided with a guide assembly for changing the rotating path of the stirring blade 15, the guide assembly includes a limiting ring 14 arranged on the upper end of the inner side of the dispersion cavity 1, the inner side of the limiting ring 14 is provided with an annular limiting groove 28, the upper end of the annular limiting groove 28 is uniformly provided with an arc-shaped undulating groove 29, and the arc-shaped undulating groove 29 and the inner wall of the annular limiting groove 28 are smoothly transitioned, the output end of the rotating drive source 5 is provided with a positive multi-prism rotating rod 42, the upper end of the rotating shaft 11 is movably sleeved outside the rotating rod 42, so that the rotating shaft 11 can be displaced along the vertical direction, the upper end side wall of the rotating shaft 11 is provided with a traction arm 43 corresponding to the limiting ring 14, and the end of the traction arm 43 away from the rotating shaft 11 is rotatably connected with a roller 44 for movably connecting with the annular limiting groove 28 and the arc-shaped undulating groove 29.

[0072] Further, as shown in the drawings, Figure 3 、 Figure 5 、 Figure 6 、 Figure 9 、 Figures 11-14 As shown, the inner side of the grinding cavity 2 is provided with a sealing assembly, the sealing assembly includes a sealing disc 13 arranged on the upper end of the inner cavity of the grinding cavity 2, the top of the sealing disc 13 is provided with a sealing plug column 26 corresponding to the communication port 3 and used for sealing the communication port 3, the sealing disc 13 and the sealing plug column 26 are movably connected to the outer side of the rotating shaft 11, and the sealing disc 13 and the sealing plug column 26 are key-coupled with the rotating shaft 11, so that the whole of the sealing disc 13 and the sealing plug column 26 can only be displaced along the axial direction of the rotating shaft 11, the outer peripheral side of the sealing disc 13 is provided with an annular sealing air bag 31, and the annular sealing air bag 31 has elasticity, the inner periphery of the top of the sealing disc 13 is provided with a through groove 36 corresponding to and matched with the stirring plate 45, the inner side of the outer periphery of the sealing disc 13 is provided with a cavity 39 in communication with the annular sealing air bag 31 and corresponding to the through groove 36, and the cavity 39 movably connects a plug plate 40, the side of the plug plate 40 away from the cavity 39 is provided with a stress sliding block 41 extending into the inner side of the through groove 36, the upper and lower ends of the stirring plate 45 are both provided with a slope 35, a vertical part is formed between the two slopes 35, and the stirring plate 45 is movably connected with the through groove 36, so that when the slope 35 extrudes the stress sliding block 41, the plug plate 40 can be displaced in the direction of the annular sealing air bag 31, and when the stress sliding block 41 corresponds to the slope 35, there is a gap between the annular sealing air bag 31 and the inner wall of the grinding cavity 2, and when the stress sliding block 41 is located in the vertical part between the two slopes 35, the annular sealing air bag 31 is in close contact with the inner wall of the grinding cavity 2, and is configured to correspond to the vertical part between the two slopes 35 when the sealing plug column 26 is separated from the communication port 3;

[0073] As shown in the drawings, Figure 11 Figure 13As shown, in order to reduce the wear of the sealing plug column 26 with the inner wall of the communication port 3 when rotating, a positioning ring 33 is rotatably connected to the inner side of the communication port 3. The upper end of the sealing plug column 26 is conical, which is used for inserting into the bottom of the positioning ring 33. A positioning block 37 is arranged on the conical part of the upper end of the sealing plug column 26. The positioning block 37 has a certain taper. The bottom of the positioning ring 33 is provided with a positioning groove 38 corresponding to and matching the positioning block 37. The positioning block 37 is inserted and matched with the positioning groove 38. If the positioning ring 33 is arranged, the side wall of the sealing plug column 26 does not contact the inner wall of the communication port 3. The sealing plug column 26 is sealed by the conical part of the upper end of the sealing plug column 26 and the positioning ring 33. When rotating, the positioning ring 33 can be driven to rotate synchronously, which reduces the wear of the sealing plug column 26 and the inner wall of the communication port 3. If the positioning ring 33 is not arranged, a sealing ring needs to be arranged on the outer side of the sealing plug column 26 to contact the inner wall of the communication port 3.

[0074] Further, as shown in Figures 2-6 , Figure 9 , Figures 11-13 The upper end of the sealing assembly is provided with a driving assembly for driving the sealing assembly to lift. The driving assembly comprises a lifting scraper ring 16 vertically movably connected to the inner wall of the dispersion cavity 1. The bottom of the lifting scraper ring 16 is vertically provided with a guide rod 7 extending to the inner side of the grinding cavity 2. The guide rod 7 is movably and sealingly connected with the dispersion cavity 1 and the grinding cavity 2. The bottom of the guide rod 7 is fixedly provided with a traction ring 19. The bottom of the traction ring 19 is rotatably connected with a traction frame 30. The bottom of the traction frame 30 is fixed to the top of the blocking disc 13. The top of the dispersion cavity 1 is provided with a linear driving source 6 for driving the lifting scraper ring 16 to lift. The linear driving source 6 can be a cylinder, an oil cylinder, a linear motor or other devices that can drive the lifting scraper ring 16 to lift. Preferably, the linear driving source 6 is a cylinder. The output shaft of the cylinder extends from the periphery of the limiting ring 14 to the bottom of the limiting ring 14 and is fixedly connected with the lifting scraper ring 16. The output shaft of the cylinder is movably and guidingly connected with the periphery of the limiting ring 14.

[0075] In addition, as shown in Figures 2-3 , Figures 5-8 The inner side of the lower end of the grinding cavity 2 is provided with a gas blowing mechanism for pushing the slurry and the grinding medium 18 upward. The gas blowing mechanism comprises a plug disc 12 movably connected to the inner side of the lower end of the grinding cavity 2. The bottom of the rotating shaft 11 is rotatably connected to the top middle part of the plug disc 12. A plurality of through holes 23 are vertically and penetratingly arranged on the plug disc 12. The longitudinal section of the through hole 23 is inverted conical. The inner side of the through hole 23 is provided with a sealing ball 24 for sealing the through hole 23. The upper end of the through hole 23 is provided with a fixing frame 22. The bottom of the fixing frame 22 and the top of the sealing ball 24 are provided with a first elastic member 25. The lower end side wall of the grinding cavity 2 is provided with a one-way air inlet valve 10 located at the bottom of the plug disc 12.

[0076] As shown in Figure 4 , Figures 6-9As shown, to facilitate material discharge, a base frame 20 is provided at the lower inner side of the grinding chamber 2. The top of the base frame 20 is provided with a pin 21 that corresponds one-to-one with the through hole 23 and has a diameter smaller than the inner diameter of the through hole 23. A fixing ring 17 is fixedly provided at the upper inner side of the dispersion chamber 1, located above the limiting ring 14. The limiting ring 14 is vertically and movably connected to the upper inner wall of the dispersion chamber 1. A second elastic element 27 is provided between the bottom of the fixing ring 17 and the top of the limiting ring 14. In the initial state, the lifting scraper ring 16 and the bottom of the limiting ring 14 are in contact, so the second elastic element 27 is in a contracted state. At this time, there is a gap between the top of the pin 21 and the bottom of the stopper plate 12. When the second elastic element 27 is in the reset state, the top of the pin 21 is in contact with the bottom of the sealing ball 24, and a gap is generated between the sealing ball 24 and the inner wall of the through hole 23.

[0077] like Figures 11-14 As shown, in order to adapt to the positive pressure when the annular sealing airbag 31 has not yet separated from the inner wall of the grinding chamber 2 after the valve on the discharge port 8 is closed, the sealing plate 13 can continue to move down. An obstacle hole 34 is provided through the sealing plate 13, and an elastic membrane 32 is provided on the upper inner side of the obstacle hole 34.

[0078] In addition, in order to release the positive pressure at the upper end of the platen 12 when the platen 12 moves back to its original position, a one-way exhaust valve 9 is provided at the upper end of the grinding chamber 2. At the same time, the one-way exhaust valve 9 can also solve the pressure caused by the temperature rise due to the collision of the grinding media 18.

[0079] The invention also includes an embodiment, specifically a composite material modified wear-resistant and anti-corrosion coating, which is prepared by the above-described method for preparing composite material modified wear-resistant and anti-corrosion coating.

[0080] According to the working principle of the dispersion grinding device, the raw materials and solvents can be added to the dispersion cavity 1 from the feeding port 4 in use. In the initial state, the sealing plug column 26 is in the plug sealing state with the communication port 3, there is a gap between the annular sealing air bag 31 and the inner wall of the grinding cavity 2, and the second elastic member 27 is in the contraction state. The slurry after stirring and dispersion is ground in the grinding cavity 2. During the work, the rotation driving source 5 drives the rotation of the rotating rod 42, the rotating shaft 11, the stirring blade 15, the sealing disc 13, the sealing plug column 26 and the stirring plate 45. The stirring blade 15 stirs and disperses, the stirring plate 45 stirs the slurry and the grinding medium 18 in the grinding cavity 2, and the grinding medium 18 collides with the slurry particles for grinding. Under the guidance of the annular limiting groove 28 and the arc undulating groove 29, the roller 44 drives the rotating shaft 11 and the plug disc 12 to rise and fall continuously through the traction arm 43, the stirring blade 15 changes the rotation path continuously, so as to improve the stirring effect. When the plug disc 12 rises, negative pressure is generated at the bottom of the plug disc 12, positive pressure is generated above the plug disc 12, external gas enters the bottom of the plug disc 12 through the one-way air inlet valve 10, and the air pressure above the plug disc 12 is discharged from the one-way air outlet valve 9. When the plug disc 12 descends, positive pressure is generated at the bottom of the plug disc 12, negative pressure is generated above the plug disc 12, the positive pressure pushes the sealing ball 24 to move upward, the first elastic member 25 contracts, a gap is generated between the sealing ball 24 and the inner wall of the through hole 23, and the gas enters the top of the plug disc 12 upward. The gas pushes the deposited grinding medium 18 and slurry particles upward, so as to increase the grinding effect. After the stirring, dispersion and grinding are completed, the rotation driving source 5 stops, the linear driving source 6 drives the lifting scraper ring 16, the guide rod 7, the traction ring 19 and the sealing disc 13 to move downward as a whole, the second elastic member 27 resets first, the limiting ring 14 moves downward, and then the rotating shaft 11 is driven by the traction arm 43 to move downward, the plug disc 12 moves downward, the ejector pin 21 enters the through hole 23 to lift the sealing ball 24, at this time, a gap is generated again between the sealing ball 24 and the inner wall of the through hole 23, the paint in the grinding cavity 2 can fall to the bottom of the plug disc 12 through the gap, the valve on the discharge port 8 is opened, and the paint can be gradually discharged. The linear driving source 6 continues to drive the lifting scraper ring 16, the guide rod 7, the sealing plug column 26 and the sealing disc 13 to move downward as a whole. The stressed sliding block 41 is extruded by the upper slope surface 35 of the stirring plate 45 and gradually drives the plug plate 40 to move to the direction of the annular sealing air bag 31, so as to extrude the internal gas to inflate the annular sealing air bag 31. When the annular sealing air bag 31 contacts with the inner wall of the grinding cavity 2, the sealing plug column 26 is separated from the communication port 3. At this time, the vertical part between the stressed sliding block 41 and the two slope surfaces 35 on the stirring plate 45 corresponds, the sealing disc 13 continues to move downward, the paint at the bottom can be quickly discharged under the self-weight and the pressure of the sealing disc 13, and the slurry in the dispersion cavity 1 can quickly fall to the top of the sealing disc 13 in the grinding cavity 2 under the self-weight and the negative pressure generated by the sealing disc 13. When the paint at the bottom of the sealing disc 13 is completely discharged, the valve on the discharge port 8 is closed, and the sealing disc 13 continues to move downward.Thus, the stressed sliding block 41 gradually corresponds to the slope 35 at the lower end of the stirring plate 45, the annular sealing air bag 31 can gradually contract and reset, so that the annular sealing air bag 31 is separated from the inner wall of the grinding cavity 2, and the slurry on the top of the blocking disc 13 can fall to the bottom of the blocking disc 13. Moreover, when the stressed sliding block 41 reaches the slope 35 at the lower end of the stirring plate 45, the bottom of the blocking disc 13 will generate a positive pressure, which can extrude the elastic film 32 at this time, so that the elastic film 32 is raised to adapt to the positive pressure, and the lifting scraper ring 16 can also scrape the slurry on the inner wall of the dispersion cavity 1 when it moves downward. Finally, the linear driving source 6 drives the lifting scraper ring 16, the guide rod 7, the blocking disc 13, and the sealing plug column 26 to move upward and reset as a whole, the sealing plug column 26 seals the communication port 3 again, the lifting scraper ring 16 lifts the limiting ring 14 to the contraction of the second elastic member 27 again, the ejector pin 21 is separated from the sealing ball 24, the sealing ball 24 moves downward to seal again, then the raw materials and solvents are added in the dispersion cavity 1, and finally the stirring and dispersion in the dispersion cavity 1 and the grinding in the grinding cavity 2 are continued to improve the efficiency.

[0081] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A method for preparing a composite modified wear-resistant anticorrosive coating, characterized in that, It comprises the following steps: S1: raw material preparation, weighing high-performance resin, wear-resistant filler, anticorrosive filler and functional additives, wherein the wear-resistant filler is nano-aluminum oxide, silicon carbide and diamond powder, the anticorrosive filler is zinc powder, glass flake and mica powder, the high-performance resin is polyurethane resin or epoxy resin, and the functional additives are dispersing agent, leveling agent and defoaming agent; Solvent preparation, solvent is environmentally friendly organic solvent or water; S2: the weighed raw materials are added to the dispersion grinding device, and first stirring and mixing is carried out to make the fillers and additives fully dispersed in the resin, the stirring time is 60-90 minutes, and the reaction condition is normal temperature and pressure; The coating slurry after stirring and mixing is also ground by the dispersion grinding device to further refine the filler particles, the grinding time is 60-120 minutes, and the reaction condition is normal temperature; S3: the performance of the ground coating is tested, and according to the test results, an appropriate amount of solvent and functional additives are added for adjustment; S4: the coating with adjusted performance is treated by ultrasonic treatment equipment to further remove small impurities and bubbles, the treatment time is 10-30 minutes, and the reaction condition is normal temperature and pressure; S5: the treated coating is filtered through a filter to remove impurities and large particle substances, and the filtered coating is packed into a packaging container and sealed for storage; The dispersion grinding device comprises a dispersion cavity (1), a grinding cavity (2) arranged at the bottom of the dispersion cavity (1), and a communication port (3) for communication between the dispersion cavity (1) and the grinding cavity (2). The dispersion cavity (1) is provided with a stirring and dispersing mechanism, the stirring and dispersing mechanism comprises a rotating shaft (11) vertically arranged in the middle of the dispersion cavity (1), the side wall of the rotating shaft (11) is provided with stirring blades (15), and the top end of the dispersion cavity (1) is provided with a rotating driving source (5) for driving the rotating shaft (11) to rotate; The grinding cavity (2) is provided with a grinding mechanism, the grinding mechanism comprises a grinding medium (18) arranged in the inner cavity of the grinding cavity (2), and the lower end of the rotating shaft (11) extends to the inner cavity of the grinding cavity (2) through the communication port (3) and is provided with an agitating plate (45). The dispersion cavity (1) is provided with a guide assembly for changing the rotating path of the stirring blade (15), the guide assembly comprises a limiting ring (14) arranged on the upper end of the inner side of the dispersion cavity (1), the inner side of the limiting ring (14) is provided with an annular limiting groove (28), the upper end of the annular limiting groove (28) is uniformly provided with an arc-shaped undulating groove (29), and the arc-shaped undulating groove (29) and the inner wall of the annular limiting groove (28) are smoothly connected, the output end of the rotating drive source (5) is provided with a positive multi-prism rotating rod (42), the upper end of the rotating shaft (11) is movably sleeved outside the rotating rod (42), so that the rotating shaft (11) can be displaced in the vertical direction, the upper end side wall of the rotating shaft (11) is provided with a traction arm (43) corresponding to the limiting ring (14), and the end of the traction arm (43) away from the rotating shaft (11) is rotatably connected with a roller (44) for movably connecting with the annular limiting groove (28) and the arc-shaped undulating groove (29); The inner side of the grinding cavity (2) is provided with a sealing assembly, the sealing assembly comprises a sealing disc (13) arranged on the upper end of the inner cavity of the grinding cavity (2), the top of the sealing disc (13) is provided with a sealing plug column (26) corresponding to the communication port (3) and used for sealing the communication port (3), the sealing disc (13) and the sealing plug column (26) are movably connected outside the rotating shaft (11), and the sealing disc (13) and the sealing plug column (26) are key-connected with the rotating shaft (11), so that the whole of the sealing disc (13) and the sealing plug column (26) can only be displaced in the axial direction of the rotating shaft (11); The outer peripheral side of the sealing disc (13) is provided with an annular sealing air bag (31), and the annular sealing air bag (31) has elasticity, the inner periphery of the top of the sealing disc (13) is provided with a through groove (36) corresponding to and matched with the stirring plate (45), the outer peripheral inner side of the sealing disc (13) is provided with a cavity (39) in communication with the annular sealing air bag (31) and corresponding to the through groove (36), the inner side of the cavity (39) is movably connected with a plug plate (40), the side of the plug plate (40) away from the cavity (39) is provided with a stress sliding block (41) extending into the inner side of the through groove (36), the upper and lower ends of the stirring plate (45) are provided with slope surfaces (35), a vertical part is formed between the two slope surfaces (35), and the stirring plate (45) is movably connected with the through groove (36), so that when the slope surface (35) extrudes the stress sliding block (41), the plug plate (40) can be displaced in the direction of the annular sealing air bag (31), when the stress sliding block (41) corresponds to the slope surface (35), there is a gap between the annular sealing air bag (31) and the inner wall of the grinding cavity (2), when the stress sliding block (41) is located in the vertical part between the two slope surfaces (35), the annular sealing air bag (31) is in close contact with the inner wall of the grinding cavity (2), and the configuration is that when the sealing plug column (26) is separated from the communication port (3), the stress sliding block (41) corresponds to the vertical part between the two slope surfaces (35).

2. The method for preparing a composite modified wear-resistant anticorrosive coating according to claim 1, characterized in that: In step S3, the performance test includes testing the viscosity, fineness, hardness, wear resistance and corrosion resistance of the paint.

3. The method for preparing a composite modified wear-resistant anticorrosive coating according to claim 1, characterized in that: The upper end of the sealing assembly is provided with a driving assembly for driving the sealing assembly to lift, the driving assembly comprises a lifting scraper ring (16) vertically movably connected to the inner wall of the dispersion cavity (1), the bottom of the lifting scraper ring (16) is vertically provided with a guide rod (7) extending to the inner side of the grinding cavity (2), the bottom of the guide rod (7) is fixedly provided with a traction ring (19), the bottom of the traction ring (19) is rotatably connected with a traction frame (30), and the bottom of the traction frame (30) is fixed to the top of the sealing disc (13), and the top of the dispersion cavity (1) is provided with a linear driving source (6) for driving the lifting scraper ring (16) to lift.

4. The method for preparing a composite modified wear-resistant anticorrosive coating according to claim 3, characterized in that: The bottom of the grinding cavity (2) is provided with a discharge port (8), and the discharge port (8) is provided with a valve. The inner side of the lower end of the grinding cavity (2) is provided with a gas blowing mechanism for pushing the slurry and the grinding medium (18) upward, the gas blowing mechanism comprises a plug disc (12) vertically movably connected to the inner side of the lower end of the grinding cavity (2), and the bottom of the rotating shaft (11) is rotatably connected to the top middle part of the plug disc (12), a plurality of through holes (23) are vertically and penetratingly provided on the plug disc (12), the longitudinal section of the through hole (23) is in inverted conical shape, a sealing ball (24) is arranged in the inner side of the through hole (23) for sealing the through hole (23), the upper end of the through hole (23) is provided with a fixing frame (22), the bottom of the fixing frame (22) and the top of the sealing ball (24) are provided with a first elastic member (25), and the lower end side wall of the grinding cavity (2) is provided with a one-way air inlet valve (10) located at the bottom of the plug disc (12).

5. The method for preparing a composite modified wear-resistant anticorrosive coating according to claim 4, characterized in that: The inner side of the lower end of the grinding cavity (2) is provided with a bottom bracket (20), and the top of the bottom bracket (20) is provided with a top pin (21) corresponding to the through hole (23) and having a diameter smaller than the inner diameter of the through hole (23). The inner side of the upper end of the dispersion cavity (1) is fixedly provided with a fixed ring (17) located above the limiting ring (14), the limiting ring (14) is vertically movably connected to the inner wall of the upper end of the dispersion cavity (1), the bottom of the fixed ring (17) and the top of the limiting ring (14) are provided with a second elastic member (27), and in the initial state, the lifting scraper ring (16) and the bottom of the limiting ring (14) are in contact, so that the second elastic member (27) is in the contraction state, and at this time, there is a gap between the top of the top pin (21) and the bottom of the plug disc (12), when the second elastic member (27) is in the reset state, the top of the top pin (21) is in contact with the bottom of the sealing ball (24), and a gap is formed between the sealing ball (24) and the inner wall of the through hole (23).

6. The method for preparing a composite modified wear-resistant anticorrosive coating according to claim 5, characterized in that: The sealing disc (13) is provided with an avoiding hole (34) penetratingly arranged thereon, and the inner side of the upper end of the avoiding hole (34) is provided with an elastic film (32); the upper end of the grinding cavity (2) is provided with a one-way air outlet valve (9).

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