Material for new energy photovoltaic glue spreading roller

Abstract

The invention discloses a material for a new energy photovoltaic glue spreading roller, the material comprises a glue spreading roller, the glue spreading roller comprises a roller core layer, a reinforcing layer, a glue spreading layer and a surface treatment layer, and a base material comprises the following raw materials in parts by weight: 100-120 parts of fluorosilicone rubber, 2-5 parts of a cross-linking agent, 0.1-0.5 part of a catalyst, 1-3 parts of an anti-aging agent and 0.3-0.8 part of a plasticizer. The reinforcing material comprises the following raw materials in parts by weight: 5-20 parts of nano silicon dioxide, 0.5-2 parts of a dispersing agent, 1-3 parts of a coupling agent and 1-2 parts of a defoaming agent, so that the glue spreading roller has good corrosion resistance, and the material can effectively resist corrosion of corrosive substances, protect the internal structure of the glue spreading roller and prolong the service life of the glue spreading roller. Hard materials such as silicon carbide, boron fibers and aluminum nitride powder are added into the roller core layer, wear-resistant components such as aluminum oxide ceramic microspheres, silicon carbide micro powder and molybdenum disulfide powder are added into the glue coating layer, and the wear resistance of the glue coating roller is improved; and the antioxidant and other components added in each layer jointly improve the heat resistance of the glue spreader.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glue coating rollers, in particular to materials for new energy photovoltaic glue coating rollers. Background Art

[0002] New energy photovoltaic glue rollers are mainly used in the processing of solar cells. For example, when bonding cells to other materials, glue rollers can ensure that the pressurized glue is evenly coated on the surface of the cell, improving the adhesion of the materials. In addition, when treating the surface of solar cells, glue rollers can evenly coat the chemical solution on the surface of the cell, improving the absorption efficiency of the cell.

[0003] However, in the new energy photovoltaic industry, traditional glue coating rollers have many problems: First, in the high temperature environment of some process links, due to poor heat resistance, they are prone to softening and degradation, affecting the glue coating effect and service life; second, during use, due to the insufficient wear resistance of the coating material, it is prone to wear, resulting in a short service life and the need for frequent replacement, which increases production costs; third, the glue coating roller will be exposed to various corrosive substances, and traditional glue coating rollers have poor corrosion resistance and are easily corroded, resulting in coating shedding, corrosion pits and cracks, affecting performance and service life; fourth, the layers of traditional glue coating rollers are not tightly bonded, the structural performance is not ideal, and delamination and cracking are prone to occur. Summary of the Invention

[0004] In order to overcome the deficiencies of the existing technical solutions, the present invention provides a new energy photovoltaic glue coating roller material, which can effectively solve the technical problems raised by the background technology.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a material for a new energy photovoltaic glue-coating roller, comprising a glue-coating roller, wherein the glue-coating roller comprises a roller core layer, a reinforcement layer, a glue-coating layer, and a surface treatment layer arranged in sequence from the inside to the outside, wherein the reinforcement layer is used to improve the strength and rigidity of the roller core layer, and the reinforcement layer is tightly bonded to the roller core layer by an adhesive, the glue-coating layer is tightly bonded to the reinforcement layer by a vulcanization process, and the surface treatment layer is made of a composite material composed of a base material and a reinforcement material, and the surface treatment layer is evenly covered on the surface of the glue-coating layer by spraying, and is tightly bonded to the glue-coating layer by a curing process;

[0006] The matrix material comprises the following raw materials in parts by weight: 100-120 parts of fluorosilicone rubber, 2-5 parts of a crosslinking agent, 0.1-0.5 parts of a catalyst, 1-3 parts of an antioxidant, and 0.3-0.8 parts of a plasticizer;

[0007] The reinforcing material comprises the following raw materials in parts by weight: 5-20 parts of nano silicon dioxide, 0.5-2 parts of a dispersant, 1-3 parts of a coupling agent and 1-2 parts of a defoaming agent.

[0008] Furthermore, the roller core layer comprises the following raw materials in parts by weight: 60-70 parts of carbon steel powder, 10-20 parts of stainless steel powder, 5-10 parts of graphite, 5-10 parts of silicon carbide, 5-10 parts of resin adhesive and 0.5-1 part of antioxidant.

[0009] Furthermore, the reinforcement layer comprises the following raw materials in parts by weight: 10-50 parts of epoxy resin, 20-70 parts of carbon fiber, 5-20 parts of calcium carbonate, 0.5-5 parts of coupling agent and 0.1-2 parts of antioxidant.

[0010] Furthermore, the coating layer includes the following raw materials in parts by weight: 50-60 parts of epoxy resin, 20-25 parts of epoxy curing agent, 10-15 parts of alumina ceramic microspheres, 8-10 parts of silicon carbide micropowder, 3-5 parts of reinforcing fiber, 1-2 parts of thixotropic agent, 2-3 parts of toughening agent, 1-2 parts of diluent and 1-3 parts of titanium dioxide.

[0011] Furthermore, the roller core layer further comprises the following raw materials in parts by weight: 3-8 parts of tungsten powder, 2-5 parts of boron fiber, 2-5 parts of nitrile rubber particles and 3-8 parts of aluminum nitride powder.

[0012] Furthermore, the reinforcing layer adopts a fiber laying process to make the carbon fiber multi-directionally distributed in the epoxy resin, the coupling agent type is silane coupling agent KH-570, and the reinforcing layer also includes the following raw materials in parts by weight: 5-10 parts of boron nitride powder and 3-6 parts of aramid fiber.

[0013] Furthermore, the coating layer further comprises the following raw materials in parts by weight: 8-12 parts of nano-alumina powder, 3-5 parts of polyimide particles and 5-10 parts of molybdenum disulfide powder, and the epoxy curing agent is a dicyandiamide derivative.

[0014] Furthermore, the matrix material also includes the following raw materials in parts by weight: 0.5-2 parts of graphene and 2-4 parts of aluminum carbonate fiber.

[0015] Furthermore, the reinforcing material further comprises the following raw materials in parts by weight: 5-10 parts of polytetrafluoroethylene emulsion and 1-3 parts of fluoropolymer hydrophobic agent.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By adding hard materials such as silicon carbide, boron fiber, and aluminum nitride powder to the roller core layer, and adding wear-resistant components such as alumina ceramic microspheres, silicon carbide micropowder, and molybdenum disulfide powder to the rubber coating layer, the wear resistance of the rubber coating roller is significantly improved, so that the material can effectively resist wear during use and extend the service life of the rubber coating roller;

[0018] (2) The carbon steel powder, stainless steel powder, graphite and other materials in the roller core layer, as well as the antioxidants and other ingredients added to each layer, together improve the heat resistance of the rubber coating roller. This material can be used at higher temperatures, meeting the needs of some high-temperature process links in the new energy photovoltaic industry;

[0019] (3) The surface treatment layer is made of a composite material composed of a base material and a reinforcing material, wherein the base material includes fluorosilicone rubber, graphene and other components, and the reinforcing material includes nano-silicon dioxide, polytetrafluoroethylene emulsion, fluoropolymer hydrophobic agent and the like. These components work together to make the rubber coating roller have good corrosion resistance. The material can effectively resist the erosion of corrosive substances and protect the internal structure of the rubber coating roller;

[0020] (4) The roller core layer adopts a process that combines compression molding and hot isostatic pressing to make the roller core layer denser and improve the density and strength of the roller core layer. The reinforcement layer uses a fiber laying process to make the carbon fiber multi-directionally distributed in the epoxy resin, further improving the strength and rigidity of the roller core layer. The coating layer is tightly combined with the reinforcement layer through a vulcanization process. The surface treatment layer is evenly covered on the surface of the coating layer by spraying and is tightly combined with the coating layer through a curing treatment. The synergistic effect between the layers optimizes the overall structural performance of the coating roller, making it have better comprehensive performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the material for the new energy photovoltaic coating roller of the present invention;

[0022] Numbers in the figure:

[0023] 1. Roller core layer; 2. Reinforcement layer; 3. Rubber coating layer; 4. Surface treatment layer. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, the present invention provides a material for a new energy photovoltaic glue coating roller, including a glue coating roller, wherein the glue coating roller includes a roller core layer 1, a reinforcement layer 2, a glue coating layer 3 and a surface treatment layer 4 arranged in sequence from the inside to the outside;

[0026] The roller core layer 1 comprises the following raw materials in parts by weight: 60-70 parts of carbon steel powder, 10-20 parts of stainless steel powder, 5-10 parts of graphite, 5-10 parts of silicon carbide, 5-10 parts of resin adhesive, 0.5-1 part of antioxidant, 3-8 parts of tungsten powder, 2-5 parts of boron fiber, 2-5 parts of nitrile rubber particles and 3-8 parts of aluminum nitride powder;

[0027] Preparation of roller core layer 1:

[0028] Step S1, accurately weighing carbon steel powder, stainless steel powder, graphite, silicon carbide, tungsten powder, boron fiber, nitrile rubber particles and aluminum nitride powder according to given weight parts, stirring at high speed, adding resin adhesive and antioxidant during stirring, setting the stirring speed to 1000-1500 r / min and the stirring time to 10-15 minutes to ensure that the ingredients are initially mixed evenly;

[0029] Step S2, ultrasonically dispersing the preliminary mixture, setting the ultrasonic power to 200-300W and the ultrasonic time to 5-10 minutes, to break up agglomerates in the raw materials and improve the mixing effect;

[0030] Step S3, using a process combining compression molding and hot isostatic pressing, firstly pressing the mixed raw materials into a roll core blank of the desired shape by compression molding, and then subjecting the mixed raw materials to high temperature and high pressure treatment in a hot isostatic pressing device with a set temperature of 300-400°C and a pressure of 100-200 MPa, to make the roll core blank more compact and improve the density and strength of the roll core layer 1;

[0031] The reinforcing layer 2 is used to improve the strength and rigidity of the roller core layer 1. The reinforcing layer 2 is tightly bonded to the roller core layer 1 via an adhesive. The reinforcing layer 2 comprises the following raw materials in parts by weight: 10-50 parts of epoxy resin, 20-70 parts of carbon fiber, 5-20 parts of calcium carbonate, 0.5-5 parts of coupling agent, 0.1-2 parts of antioxidant, 5-10 parts of boron nitride powder, and 3-6 parts of aramid fiber. The reinforcing layer 2 adopts a fiber laying process so that the carbon fiber is multi-directionally distributed in the epoxy resin. The coupling agent is silane coupling agent KH-570.

[0032] Preparation of reinforcement layer 2:

[0033] Step S1: placing solid raw materials such as carbon fiber, calcium carbonate, boron nitride powder, and aramid fiber accurately weighed according to given weight parts into a high-speed mixer, setting the stirring speed to 500-1000 r / min, and performing preliminary mixing. During the mixing process, a coupling agent and an antioxidant are added to ensure uniform distribution of the components;

[0034] Step S2, using a fiber laying process, evenly spreading the mixed solid raw materials on a substrate to form a multilayer structure, and then dissolving the epoxy resin in a solvent to form an epoxy resin solution;

[0035] Step S3, dipping the spread fiber layer into an epoxy resin solution to ensure that the fiber layer is fully moistened, and then placing the dipped fiber layer into a mold for compression molding;

[0036] Step S4: After forming, the mold is placed in an oven or hot press for curing. The temperature is set at 100-150°C and the pressure is set at 5-10 MPa. After the curing is completed, the reinforcing layer 2 is removed from the mold;

[0037] The rubber coating layer 3 is tightly bonded to the reinforcement layer 2 through a vulcanization process, and the rubber coating layer 3 comprises the following raw materials in parts by weight: 50-60 parts of epoxy resin, 20-25 parts of epoxy curing agent, 10-15 parts of alumina ceramic microspheres, 8-10 parts of silicon carbide micropowder, 3-5 parts of reinforcing fiber, 1-2 parts of thixotropic agent, 2-3 parts of toughening agent, 1-2 parts of diluent, 1-3 parts of titanium dioxide, 8-12 parts of nano-alumina powder, 3-5 parts of polyimide particles and 5-10 parts of molybdenum disulfide powder, and the epoxy curing agent is a dicyandiamide derivative;

[0038] Preparation of the adhesive layer 3:

[0039] Step S1: placing solid raw materials such as alumina ceramic microspheres, silicon carbide micropowder, reinforcing fiber, titanium dioxide, nano-alumina powder, polyimide particles, and molybdenum disulfide powder accurately weighed in given weight parts into a high-speed mixer, setting the stirring speed to 1000-1500 r / min, and performing preliminary mixing. During the mixing process, epoxy resin, diluent, and epoxy curing agent are added, and a thixotropic agent and toughening agent are added to adjust the rheological properties and toughness of the coating layer 3;

[0040] Step S2, coating the mixed raw materials on the surface of the reinforcement layer 2 by spraying;

[0041] Step S3, placing the coated rubber layer 3 into a vulcanizer for vulcanization treatment, setting the temperature to 150-200°C and the time to 1-2 hours. During the vulcanization process, the epoxy resin and the curing agent undergo a cross-linking reaction to form a hard rubber layer 3;

[0042] The surface treatment layer 4 is made of a composite material composed of a base material and a reinforcing material, and the surface treatment layer 4 is evenly covered on the surface of the rubber layer 3 by spraying and is tightly bonded to the rubber layer 3 by curing treatment. The base material includes the following raw materials in parts by weight: 100-120 parts of fluorosilicone rubber, 2-5 parts of a cross-linking agent, 0.1-0.5 parts of a catalyst, 1-3 parts of an antioxidant, 0.3-0.8 parts of a plasticizer, 0.5-2 parts of graphene, and 2-4 parts of aluminum carbonate fiber. The reinforcing material includes the following raw materials in parts by weight: 5-20 parts of nano-silicon dioxide, 0.5-2 parts of a dispersant, 1-3 parts of a coupling agent, 1-2 parts of a defoaming agent, 5-10 parts of a polytetrafluoroethylene emulsion, and 1-3 parts of a fluoropolymer hydrophobic agent.

[0043] Preparation of surface treatment layer 4:

[0044] Step S1, placing fluorosilicone rubber, a crosslinking agent, an antioxidant, a plasticizer, graphene, and aluminum carbonate fiber accurately weighed in given weight parts into a high-speed mixer for preliminary mixing, setting the stirring speed to 1000-1500 r / min, and adding a catalyst to accelerate the crosslinking reaction during the mixing process to form a matrix material mixture;

[0045] Step S2: Add nano-silica accurately weighed in given weight portions into a high-speed mixer and mix with the matrix material mixture, setting the stirring speed to 1000-1500 r / min;

[0046] Step S3, adding a dispersant and a coupling agent accurately weighed according to given weight parts, and continuing to mix to break up agglomerates and improve dispersibility;

[0047] Step S4, adding a defoamer and polytetrafluoroethylene emulsion accurately weighed in given weight parts, and continuing to mix to form a uniform suspension;

[0048] Step S5, adding a fluorine-containing polymer hydrophobic agent accurately weighed in given weight parts and mixing to obtain a matrix material solution;

[0049] Step S6: spray the mixed matrix material solution evenly on the surface of the adhesive layer 3 through a spraying device. After the spraying is completed, the adhesive roller is placed in an oven or a hot press for curing.

[0050] The following is the wear resistance test of the material used in the new energy photovoltaic coating roller of the present invention:

[0051] Test method: Double roller wear test is performed using a roller wear machine. The rubber coating roller is evenly placed between two rollers of different hardness. The two rollers are driven by a motor to roll against each other to simulate the stress conditions in actual application and test the wear resistance of the coating.

[0052] Test conditions:

[0053] Roller hardness: one roller is a high hardness ring forging roller, the other roller is a low hardness coating roller;

[0054] Scrolling speed: set according to actual needs;

[0055] Test duration: 24 hours;

[0056] Data recording: Record the changes in coating quality, coating thickness and coating surface morphology before and after wear.

[0057] Wear resistance test results:

[0058] Test time (hours) Coating mass change (g) Coating thickness variation (μm) Changes in coating surface morphology 0 0 Initial thickness Smooth and flat 24 X1 ΔT1 Minor wear

[0059] The following is the heat resistance test of the material for the new energy photovoltaic coating roller of the present invention

[0060] Test method: Place the rubber coating roller in a high temperature environment, and observe and record the changes in its physical and chemical properties at different temperatures.

[0061] Test conditions:

[0062] Temperature range: set from 50°C to 300°C;

[0063] Duration: Each temperature point lasts for 2 hours;

[0064] Data recording: record the size change, hardness change, color change of the coating roller at different temperatures, as well as whether there is softening or degradation;

[0065] Heat resistance test results

[0066] Temperature (℃) Dimensional change (%) Hardness change (HB) Color Change Softening / degradation phenomenon 50 0 No change No change none 100 0.1 -1 Slight yellowing none 200 0.3 -3 Obvious yellowing none 300 0.5 -5 browned There is softening

[0067] The following is the corrosion resistance test of the material used in the new energy photovoltaic coating roller of the present invention

[0068] Test method: Use salt spray corrosion test or chemical solution immersion test to place the rubber coating roller in a solution containing corrosive substances or in a salt spray environment, and observe and record its corrosion resistance.

[0069] Test conditions:

[0070] Salt spray corrosion test: carried out in accordance with GB / T 18912-2002 standard, lasting 96 hours;

[0071] Chemical solution immersion test: Select appropriate corrosive solution, such as acid or alkali solution, and soak for 24 hours;

[0072] Data recording: record the quality change, coating shedding, color change, corrosion pits, cracks, etc. of the coating roller in a corrosive environment.

[0073] Corrosion resistance test results

[0074] Test Method Mass change (g) Coating peeling Color Change Corrosion pits / cracks Salt spray corrosion test (96 hours) X2 No shedding Slight discoloration none Chemical solution immersion test (24 hours) X3 Slight shedding Obvious discoloration There are a few corrosion pits

[0075] X1, X2, and X3 are the data obtained from actual tests, and ΔT1 is the change in coating thickness. X1, X2, and X3 are 0.12 g, and ΔT1 is 5 μm.

[0076] Compared with traditional technologies:

[0077] (1) By adding hard materials such as silicon carbide, boron fiber, and aluminum nitride powder to the roller core layer 1, and adding wear-resistant components such as alumina ceramic microspheres, silicon carbide micropowder, and molybdenum disulfide powder to the rubber coating layer 3, the wear resistance of the rubber coating roller is significantly improved, so that the material can effectively resist wear during use and extend the service life of the rubber coating roller;

[0078] (2) The carbon steel powder, stainless steel powder, graphite and other materials in the roller core layer 1, as well as the antioxidants and other ingredients added in each layer, together improve the heat resistance of the rubber coating roller. This material can be used at higher temperatures, meeting the needs of some high-temperature process links in the new energy photovoltaic industry;

[0079] (3) The surface treatment layer 4 is made of a composite material composed of a base material and a reinforcing material, wherein the base material includes fluorosilicone rubber, graphene and other components, and the reinforcing material includes nano-silicon dioxide, polytetrafluoroethylene emulsion, fluoropolymer hydrophobic agent and the like. These components work together to make the rubber coating roller have good corrosion resistance. The material can effectively resist the erosion of corrosive substances and protect the internal structure of the rubber coating roller;

[0080] (4) The roller core layer 1 adopts a process combining compression molding and hot isostatic pressing, which makes the roller core layer 1 more compact and improves the density and strength of the roller core layer 1. The reinforcing layer 2 uses a fiber laying process to make the carbon fibers multi-directionally distributed in the epoxy resin, further improving the strength and rigidity of the roller core layer 1. The coating layer 3 is tightly combined with the reinforcing layer 2 through a vulcanization process. The surface treatment layer 4 is evenly covered on the surface of the coating layer 3 by spraying and is tightly combined with the coating layer 3 through a curing treatment. The synergistic effect between the layers optimizes the overall structural performance of the coating roller, making it have better comprehensive performance.

[0081] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Materials for new energy photovoltaic coating rollers, including coating rollers, characterized in that: The rubber-coated roller includes a roller core layer, a reinforcement layer, a rubber coating layer, and a surface treatment layer, which are arranged in sequence from the inside to the outside. The reinforcement layer is used to improve the strength and rigidity of the roller core layer, and the reinforcement layer is tightly bonded to the roller core layer by an adhesive. The rubber coating layer is tightly bonded to the reinforcement layer by a vulcanization process. The surface treatment layer is made of a composite material composed of a base material and a reinforcement material, and the surface treatment layer is evenly covered on the surface of the rubber coating layer by spraying and is tightly bonded to the rubber coating layer by curing. The matrix material comprises the following raw materials in parts by weight: 100-120 parts of fluorosilicone rubber, 2-5 parts of a crosslinking agent, 0.1-0.5 parts of a catalyst, 1-3 parts of an antioxidant, and 0.3-0.8 parts of a plasticizer; The reinforcing material comprises the following raw materials in parts by weight: 5-20 parts of nano silicon dioxide, 0.5-2 parts of a dispersant, 1-3 parts of a coupling agent and 1-2 parts of a defoaming agent.

2. The new energy photovoltaic coating roller material according to claim 1, characterized in that: The roller core layer comprises the following raw materials in parts by weight: 60-70 parts of carbon steel powder, 10-20 parts of stainless steel powder, 5-10 parts of graphite, 5-10 parts of silicon carbide, 5-10 parts of resin adhesive and 0.5-1 part of antioxidant.

3. The new energy photovoltaic coating roller material according to claim 1, characterized in that: The reinforcement layer comprises the following raw materials in parts by weight: 10-50 parts of epoxy resin, 20-70 parts of carbon fiber, 5-20 parts of calcium carbonate, 0.5-5 parts of coupling agent and 0.1-2 parts of antioxidant.

4. The new energy photovoltaic coating roller material according to claim 1, characterized in that: The coating layer comprises the following raw materials in parts by weight: 50-60 parts of epoxy resin, 20-25 parts of epoxy curing agent, 10-15 parts of alumina ceramic microspheres, 8-10 parts of silicon carbide micropowder, 3-5 parts of reinforcing fiber, 1-2 parts of thixotropic agent, 2-3 parts of toughening agent, 1-2 parts of diluent and 1-3 parts of titanium dioxide.

5. The new energy photovoltaic coating roller material according to claim 2, characterized in that: The roller core layer further comprises the following raw materials in parts by weight: 3-8 parts of tungsten powder, 2-5 parts of boron fiber, 2-5 parts of nitrile rubber particles and 3-8 parts of aluminum nitride powder.

6. The new energy photovoltaic coating roller material according to claim 3, characterized in that: The reinforcing layer adopts a fiber laying process to make the carbon fibers multi-directionally distributed in the epoxy resin. The coupling agent is silane coupling agent KH-570. The reinforcing layer also includes the following raw materials in parts by weight: 5-10 parts of boron nitride powder and 3-6 parts of aramid fiber.

7. The new energy photovoltaic coating roller material according to claim 4, characterized in that: The coating layer further comprises the following raw materials in parts by weight: 8-12 parts of nano-alumina powder, 3-5 parts of polyimide particles and 5-10 parts of molybdenum disulfide powder, and the epoxy curing agent is a dicyandiamide derivative.

8. The new energy photovoltaic coating roller material according to claim 1, characterized in that: The matrix material further comprises the following raw materials in parts by weight: 0.5-2 parts of graphene and 2-4 parts of aluminum carbonate fiber.

9. The new energy photovoltaic coating roller material according to claim 1, characterized in that: The reinforcing material further comprises the following raw materials in parts by weight: 5-10 parts of polytetrafluoroethylene emulsion and 1-3 parts of fluorine-containing polymer hydrophobic agent.

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