CN118222154A - Rail anti-slip coating and preparation method and application thereof - Google Patents
Rail anti-slip coating and preparation method and application thereof Download PDFInfo
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- CN118222154A CN118222154A CN202311861987.1A CN202311861987A CN118222154A CN 118222154 A CN118222154 A CN 118222154A CN 202311861987 A CN202311861987 A CN 202311861987A CN 118222154 A CN118222154 A CN 118222154A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000010410 layer Substances 0.000 claims abstract description 198
- 239000012790 adhesive layer Substances 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 33
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/576—Three layers or more the last layer being a clear coat each layer being cured, at least partially, separately
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B26/00—Tracks or track components not covered by any one of the preceding groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to an anti-skid coating for a track, and a preparation method and application thereof, wherein the anti-skid coating comprises an adhesive layer, a waterproof layer, a middle layer and an anti-skid layer, the adhesive layer is suitable for being arranged on a track body, the waterproof layer is arranged on the adhesive layer, and the anti-skid layer is arranged on one side of the waterproof layer far away from the adhesive layer; the waterproof layer is a methacrylic resin layer; the anti-slip layer includes an anti-slip resin and hard particles. According to the invention, the waterproof layer with good waterproof performance is arranged on the track body, so that track corrosion caused by falling of the anti-slip coating on the track can be avoided; meanwhile, the anti-skid layer has an uneven surface, so that the adhesion force between the wheels and the track is ensured, and the phenomenon of wheel skidding in rainy and snowy days can be effectively avoided.
Description
Technical Field
The invention belongs to the technical field of traffic, and particularly relates to a track anti-skid coating and a preparation method and application thereof.
Background
Urban rail transit vehicles are rapidly developed in recent years, and related routes for urban planning are continuously provided. The length of the urban rail transit vehicle can be changed at any time by changing the marshalling, and the urban rail transit vehicle can be mainly divided into subway trains, light rail trains, urban rapid rail trains, monorail trains, trams and the like.
The stability of the rail vehicle in the running process is very important, the driving performance and the braking performance of the vehicle can be seriously affected by the wheel slip, and particularly, serious running safety accidents can be caused to the rail traffic running when the wheel slip is serious in rainy and snowy weather conditions. Meanwhile, when the skid phenomenon occurs in the running process of the rail vehicle, larger noise in decibels can be generated, and noise harm is brought to residents around the rail line.
At present, anti-skid patterns are formed on the surface of a rail steel beam or concrete layers are paved on the surface of the rail steel beam to prevent skid. But the phenomenon of wheel slip still occurs in vehicles in rainy and snowy days.
Disclosure of Invention
The invention aims to avoid the wheel slipping phenomenon of a vehicle in rainy and snowy weather.
In order to achieve the above object, a first aspect of the present invention provides a track anti-slip coating layer, the anti-slip coating layer including an adhesive layer, a waterproof layer, an intermediate layer and an anti-slip layer, the adhesive layer being adapted to be disposed on a track body, the waterproof layer being disposed on the adhesive layer, the anti-slip layer being disposed on a side of the waterproof layer remote from the adhesive layer; the waterproof layer is a methacrylic resin layer; the anti-slip layer includes an anti-slip resin and hard particles filled in the anti-slip resin.
Optionally, the mass ratio of the anti-slip resin to the hard particles is 1 (2-8), preferably 1 (3-5).
Optionally, the hard particles have a particle size of 1-3mm.
Optionally, the anti-slip resin is silica gel modified epoxy resin; the hard particles are selected from one or more of corundum, quartz sand and corundum sand.
Optionally, the adhesive layer comprises an adhesive and an antioxidant; the adhesive is epoxy resin adhesive; the antioxidant is epoxy zinc-rich paint; the volume ratio of the adhesive to the antioxidant is 1 (2-8), preferably 1 (2-2.5).
Optionally, the adhesive layer is selected from one or more of epoxy resin adhesive, unsaturated polyester resin adhesive, acrylic resin adhesive and polyurethane adhesive.
Optionally, the anti-slip coating comprises at least 2 layers of waterproof layer.
Optionally, the middle layer is arranged between the waterproof layer and the anti-slip layer; the intermediate layer is a methacrylate copolymer.
Optionally, the thickness of the adhesive layer is 1-2mm; and/or the thickness of the waterproof layer is 2-3mm; and/or the thickness of the intermediate layer is 1-2mm; and/or the thickness of the anti-slip layer is 5-6mm.
The second aspect of the invention provides a method for preparing an anti-skid coating for a track, comprising the steps of: performing first spraying on the surface of the track body to form an adhesive layer; performing second spraying on the surface of the bonding layer to form at least one waterproof layer; and performing third spraying on the surface of the waterproof layer to form an intermediate layer, and pouring anti-slip slurry on the surface of the intermediate layer to form an anti-slip layer.
Optionally, the time interval between the completion time of the first spray and the start time of the second spray is 0.5-1 hour.
Optionally, the conditions of the first spraying include: the bonding layer comprises an adhesive and an antioxidant; the volume ratio of the adhesive to the antioxidant is 1 (2-2.8); the thickness of the bonding layer is 1-2mm.
Optionally, the waterproof layer comprises a first waterproof layer and a second waterproof layer; the first waterproof layer and the second waterproof layer are both methacrylic resin layers; the thickness of each of the first waterproof layer and the second waterproof layer is 1-1.5mm.
Optionally, the time interval between the start time of spray forming the first waterproof layer and the start time of spray forming the second waterproof layer is greater than 10 minutes.
Optionally, the intermediate layer is a methacrylate copolymer; a time interval between a time when the third spraying is started and a time when the second spraying is completed is greater than 30 minutes; the thickness of the intermediate layer is 1-2mm.
Optionally, pouring the slip-resistant slurry conditions includes: the anti-slip slurry comprises anti-slip resin and hard particles, and the temperature of the anti-slip resin is 175-185 ℃; the mass ratio of the anti-skid resin to the hard particles is 1 (2-8); the thickness of the anti-slip layer is 5-6mm.
A third aspect of the invention provides a rail beam comprising a rail body comprising a rail running surface on which the rail anti-slip coating of the first aspect of the invention is disposed.
Through the technical scheme, the waterproof layer with good waterproof performance is arranged on the track body, so that the anti-slip layer and the track water can be blocked, and track corrosion caused by falling of the anti-slip coating on the track is avoided; meanwhile, the anti-slip layer contains hard particles, an uneven surface is formed on the anti-slip coating, a long-term anti-slip function is improved, the adhesion force between the trolley wheels and the rail is ensured, and the phenomenon of wheel slip of vehicles in rainy and snowy weather can be effectively avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
Fig. 1 is a schematic view of the structure of the anti-slip coating layer provided by the invention when being coated on a rail body.
Reference numerals illustrate:
100. a track body; 210. an adhesive layer; 220. a waterproof layer; 230. an intermediate layer; 240. an anti-slip layer.
Detailed Description
The following describes specific embodiments of the present invention in detail. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
The invention provides an anti-slip coating for a track, wherein fig. 1 schematically shows the structure of the anti-slip coating according to an embodiment of the invention, and referring to fig. 1, the anti-slip coating comprises an adhesive layer 210, a waterproof layer 220, an intermediate layer 230 and an anti-slip layer 240, wherein the adhesive layer 210 is suitable for being arranged on a track body 100, the waterproof layer 220 is arranged on the adhesive layer 210, and the anti-slip layer 240 is arranged on one side of the waterproof layer 220 away from the adhesive layer 210; the waterproof layer 220 is a methacrylic resin layer; the anti-slip layer 240 includes an anti-slip resin and hard particles filled in the anti-slip resin.
Through the technical scheme, the waterproof layer with good waterproof performance is arranged on the track body, so that the anti-slip layer and the track water can be blocked, and track corrosion caused by falling of the anti-slip coating on the track is avoided; meanwhile, the anti-slip layer contains hard particles, an uneven surface is formed on the anti-slip coating, a long-term anti-slip function is improved, the adhesion force between the trolley wheels and the rail is ensured, and the problem of wheel slip in rainy and snowy days can be effectively solved.
Wherein the anti-skid resin is silica gel modified epoxy resin; the hard particles are selected from one or more of corundum, quartz sand and corundum sand.
Specifically, the hard particles are selected from carborundum, quartz sand and corundum sand, have higher hardness, can avoid being cracked because of the extrusion, simultaneously, mix anti-slip resin and hard particles, the hard particles in the anti-slip layer have certain hardness, guarantee the frictional force on anti-slip layer surface to guarantee that anti-slip coating can satisfy skid-proof demand.
In some embodiments of the present invention, the hard particles have a suitable particle size, may form an uneven surface on the surface of the anti-slip layer, and in particular, may have a particle size of 1 to 3mm.
Specifically, the anti-skid resin adopts silica gel modified epoxy resin, has better thermal stability, ageing resistance, cracking resistance and noise reduction performance, and can meet the performances of sun-proof, high temperature resistance, water resistance and acid mist resistance of the anti-skid coating.
Wherein the mass ratio of the anti-skid resin to the hard particles is 1 (2-8), so that the hard particles can be stably arranged in the anti-skid coating structure. In order to secure the impact resistance of the anti-slip coating layer and the adhesion between the wheel and the anti-slip coating layer, it is preferable that the mass ratio of the anti-slip resin to the hard particles is 1 (3-5).
In some embodiments of the present invention, the thickness of the anti-slip layer 240 is 5-6mm, and the anti-slip layer 240 has a certain thickness, so that the hard particles are stably present in the anti-slip layer while protecting the track body, thereby improving the wear resistance and friction performance of the anti-slip layer.
In the present invention, the adhesive layer 210 includes an adhesive and an antioxidant; specifically, the adhesive is epoxy resin adhesive, preferably high-toughness epoxy resin adhesive with good adhesive property, low shrinkage and chemical corrosion resistance, and the highly crosslinked three-dimensional network structure can be used for stably bonding the whole anti-skid coating on the track body.
Specifically, the antioxidant is epoxy zinc-rich paint; the epoxy zinc-rich paint is a double-component high-solid polyamide addition curing epoxy zinc-rich primer, consists of superfine zinc powder, epoxy resin and polyamide curing agent, and has the functions of corrosion resistance and oxidation resistance. The epoxy zinc-rich paint contains a large amount of zinc powder, the zinc powder can be used as an anode to be corroded to protect the track body when the bonding layer is in close contact with the track body, and meanwhile, the zinc powder is used as an oxidation product formed by a sacrificial anode to play a role in sealing the bonding layer, so that the protection effect of the bonding layer on the track body is further enhanced.
In some embodiments of the invention, the volume ratio of the adhesive to the antioxidant is 1 (2-2.8), preferably 1 (2-2.5). The epoxy zinc-rich paint has good corrosion resistance and strong adhesive force, has good adhesive property with other coatings, and can be used for stably adhering the anti-skid coating on the track body by matching high-toughness silica gel epoxy resin glue with the epoxy zinc-rich paint according to a proper proportion, effectively isolating the track body from the outside air, playing a role in protecting a cathode and enhancing the corrosion resistance of the track body. Specifically, the adhesive layer has a thickness of 1-2mm, whereby the adhesive layer has a sufficient thickness to isolate the rail body from the outside air.
Specifically, the waterproof layer is methacrylic resin, and the methacrylic resin not only has excellent weather resistance, water resistance and chemical corrosion resistance, but also can keep good performance in severe environments. When used for preparing the waterproof layer, the methacrylic resin also has better bonding performance and strength, has excellent interlayer bonding force, can be firmly bonded on the bonding layer, has good stretching resistance, tearing resistance and impact resistance, has long service life, can form a film in a short time, and improves the construction efficiency.
In some embodiments of the invention, in order to better protect the track body, the water repellency of the track body by the anti-slip coating layer is enhanced, and the anti-slip coating layer comprises at least 2 waterproof layers, namely, 2 methacrylic resin layers are contained in the anti-slip coating layer. Specifically, the thickness of the methacrylic resin layer is 1-1.5mm, namely, the total thickness of the waterproof layer is 2-3mm, so that the waterproof performance of the anti-skid coating is met.
In the present invention, the intermediate layer 230 is disposed between the waterproof layer 220 and the anti-slip layer 240; the middle layer is a methacrylate copolymer, for example, a Tack Coat No2 adhesive, is a single-component solvent type high-strength methacrylate copolymer, and can firmly adhere the anti-slip layer to the waterproof layer to prevent the anti-slip layer from falling off from the waterproof layer. Specifically, the thickness of the middle layer is 1-2mm so as to firmly bond the anti-slip layer and the waterproof layer.
The second aspect of the invention provides a method for preparing an anti-skid coating for a track, comprising the steps of:
S1, performing first spraying on the surface of a track body to form an adhesive layer;
s2, performing second spraying on the surface of the bonding layer to form at least one waterproof layer;
s3, performing third spraying on the surface of the waterproof layer to form an intermediate layer, and pouring anti-slip slurry on the surface of the intermediate layer to form an anti-slip layer.
According to the invention, the waterproof layer is covered on the track body, so that the waterproof protection of the track body can be realized, and the corrosion resistance of the track body is improved; meanwhile, an anti-slip layer is paved on the waterproof layer, the anti-slip layer has enough roughness and texture, is directly contacted with wheels of a vehicle and the atmosphere, provides a smooth and anti-slip running plane for the wheels of the vehicle, meets long-term anti-slip requirements, and can particularly avoid the wheels of the vehicle from slipping in rainy and snowy days.
In step S1, the first spraying conditions include: the bonding layer comprises an adhesive and an antioxidant; wherein the adhesive is high-toughness epoxy resin, and the antioxidant is epoxy zinc-rich paint. The high-toughness epoxy resin highly-crosslinked three-dimensional network structure can be used for stably bonding the whole anti-slip coating on the track body, has higher toughness and provides certain elasticity and shock resistance for the anti-slip coating. The epoxy zinc-rich paint has the functions of corrosion resistance and oxidation resistance, and the adhesive and the epoxy zinc-rich paint are matched for use, so that the anti-skid coating can be firmly adhered to the track for a long time.
Specifically, the volume ratio of the adhesive to the antioxidant is 1 (2-2.8); the high-toughness silica gel epoxy resin adhesive and the epoxy zinc-rich paint are matched according to a proper proportion, so that the track body can be effectively isolated from the outside air, a cathode protection effect is achieved, and the corrosion resistance of the track body is enhanced. Preferably, the thickness of the adhesive layer is 1-2mm to sufficiently protect the rail body.
In some embodiments of the present invention, the adhesive and the antioxidant are mixed according to the above volume ratio, and then sprayed onto the surface of the rail body by an automatic spraying device according to a proper spraying amount.
In step S2, the waterproof layer includes a first waterproof layer and a second waterproof layer; the first waterproof layer and the second waterproof layer are both methacrylic resin layers, and methacrylic resin is uniformly sprayed on the bonding layer by adopting automatic spraying equipment. Specifically, the thickness of each of the first waterproof layer and the second waterproof layer is 1-1.5mm, so that the waterproof layer with enough thickness is formed on the bonding layer, and the bonding intermediate layer and the bonding layer can be stably bonded by the waterproof layer.
Wherein, because the methacrylic resin has better adhesive property and strength and high film forming speed, the time interval between the starting time of spraying to form the first waterproof layer and the starting time of spraying to form the second waterproof layer is more than 10 minutes, so as to form 2 layers of methacrylic resin waterproof coating.
In the invention, in order to ensure that the bonding strength between the waterproof layer and the surface of the track body is more than 27MPa at normal temperature, the time interval between the completion time of the first spraying and the starting time of the second spraying is 0.5-1 hour. Preferably, the spraying of the waterproof layer is completed within 1 hour after the spraying of the bonding layer.
In the step S3, the intermediate layer is a methacrylate copolymer; in some embodiments of the present invention, the methacrylate copolymer is a Tack Coat No2 adhesive, and the Tack Coat No2 adhesive may be sprayed on the waterproof layer in a suitable amount by an automatic spraying device during the preparation process.
In order to sufficiently form a film of the methacrylic resin waterproof layer, a time interval between a time when the third spraying is started and a time when the second spraying is completed is greater than 30 minutes; specifically, the thickness of the intermediate layer formed by spraying is 1-2mm.
Wherein, pour the slip-resistant slurry condition includes: the anti-slip slurry comprises anti-slip resin and hard particles, and the temperature of the anti-slip resin is 175-185 ℃; the mass ratio of the anti-skid resin to the hard particles is 1 (2-8). Specifically, after the anti-slip resin (silica gel modified epoxy resin) is heated to 175-185 ℃ by adopting automatic heating equipment, hard particles with the particle size of 1-3mm in proper mass ratio are added, stirred and mixed uniformly, and then the anti-slip slurry is sprayed on the middle layer by adopting automatic pouring equipment. Because the Tack Coat No. 2 adhesive can be cured at about 23 ℃, the anti-slip slurry with the temperature is paved on the intermediate layer of the Tack Coat No. 2 adhesive, the Tack Coat No. 2 adhesive can be activated, and strong adhesion is formed between the anti-slip layer and the waterproof layer along with the temperature reduction.
Specifically, the thickness of the anti-slip layer is 5-6mm so as to meet the use conditions of high-temperature irradiation and contact with rainwater, acid mist and the like, and the anti-slip layer has sufficient heat stability, water damage resistance, cracking resistance and noise reduction performance.
The surface of the rail body to be formed with the anti-slip coating layer is also subjected to high-pressure cleaning and sand blasting before the first spraying. The high-pressure cleaning comprises the steps of adopting high-pressure water to clean oil stains, dust and other foreign matters on the surface of the track body; the sand blasting and rust removing comprises the step of spraying steel sand, a cleaning agent, zinc wires and the like on the surface of the rail body by adopting an automatic sand blaster so as to remove rust on the surface, so that the surface of the rail body meets the condition of coating an adhesive layer. Preferably, the track body indication is processed so that it reaches Sa 2 level in GB/T8923 and the roughness reaches M level in GB/T13288.
A third aspect of the invention provides a rail beam comprising a rail body comprising a rail running surface on which the rail anti-slip coating of the first aspect of the invention is disposed.
The track anti-skid coating provided by the invention is formed on the track traveling surface of the track beam, so that the reliability of a vehicle in a rainy and snowy weather during stable running on the track anti-skid coating can be enhanced, and taking a rubber-tired tramcar as an example, the traveling wheels of the tramcar respectively travel on the track traveling surface, and the track anti-skid coating is applied to the track traveling surface, so that an anti-skid layer and a track Liang Jishui can be prevented, the long-term corrosion resistance and rust resistance of the track beam are ensured, and the anti-skid layer can ensure the adhesive force of wheels and the track beam, so that the phenomenon of wheel skidding of the tramcar is avoided when the tramcar runs in the rainy and snowy weather.
In the invention, the improved anti-skid coating of the anti-skid track beam can be also suitable for anti-skid treatment of a straddle-type monorail train track, the straddle-type monorail track is a reinforced concrete or steel track beam, and an adhesive layer can be replaced by a material with strong adhesive force with reinforced concrete, and specifically, the adhesive layer is one or more selected from epoxy resin adhesives, unsaturated polyester resin adhesives, acrylic resin adhesives and polyurethane adhesives.
The present invention will be further illustrated in detail by the following examples, but the present invention is not limited to the following examples.
Example 1
The method for preparing the track anti-slip coating comprises the following steps:
Track substrate treatment: and (3) removing oil stains, dust and other foreign matters on the running surface of the rail by high-pressure cleaning, and then performing sand blasting and rust removal treatment to reach Sa 2 grade in GB/T8923 and M grade in GB/T13288.
Spraying an adhesive layer: uniformly stirring the adhesive high-toughness epoxy resin adhesive and the antioxidant epoxy zinc-rich paint according to the volume ratio of 1:2.5, and performing first spraying on the surface of the track body by adopting automatic spraying equipment to form an adhesive layer, wherein the spraying amount is 1.5kg/m 2; the thickness of the adhesive layer was 1.3mm.
Spraying a waterproof layer: within 1 hour after the completion of the spraying of the bonding layer, adopting automatic spraying equipment to carry out second spraying to complete the spraying of the waterproof layer; uniformly spraying methacrylic resin on the bonding layer for 2 times according to the spraying amount of 3.5kg/m 2, wherein the interval between the spraying and the spraying is more than 10 minutes, and forming 2 methacrylic resin layers on the surface of the bonding layer; the total thickness of the 2 methacrylic resin layers was 3mm.
Spraying an intermediate layer: after the waterproof layer is sprayed for more than 30 minutes, adopting automatic spraying equipment to spray the Tack Coat No2 adhesive on the surface of the waterproof layer according to the spraying amount of 500g/m 2 to form an intermediate layer, wherein the thickness of the formed intermediate layer is 1.5mm.
Laying an anti-slip layer: heating the anti-slip resin silica gel modified epoxy resin to 175 ℃ by using automatic heating equipment, heating hard granular silicon carbide into the silica gel modified epoxy resin, uniformly stirring, and then pouring anti-slip slurry on the surface of the middle layer by using automatic pouring equipment to form an anti-slip layer; wherein the grain diameter of the carborundum is 1-3mm; the weight ratio of the silica gel modified epoxy resin to the silicon carbide is 1:5; the thickness of the anti-slip layer is 6mm.
Example 2
The method of preparing the anti-slip coating layer for the track of this example is described with reference to example 1, with the difference that: the weight ratio of the silica gel modified epoxy resin to the silicon carbide in the anti-slip layer is 1:8.
Comparative example 1
The method for preparing the track anti-slip coating comprises the following steps:
Track substrate treatment: and (3) removing oil stains, dust and other foreign matters on the running surface of the rail by high-pressure cleaning, and then performing sand blasting and rust removal treatment to reach Sa 2 grade in GB/T8923 and M grade in GB/T13288.
Spraying an adhesive layer: uniformly stirring the adhesive high-toughness epoxy resin adhesive and the antioxidant epoxy zinc-rich paint according to the volume ratio of 1:2.5, and performing first spraying on the surface of the track body by adopting automatic spraying equipment to form an adhesive layer, wherein the spraying amount is 1.5kg/m 2; the thickness of the adhesive layer was 1.3mm.
Laying an anti-slip layer: heating the silica gel modified epoxy resin to 175 ℃ by using automatic heating equipment, heating hard granular silicon carbide to the silica gel modified epoxy resin, uniformly stirring, and then pouring anti-slip slurry on the surface of the adhesive layer by using automatic pouring equipment to form an anti-slip layer; wherein the grain diameter of the carborundum is 1-3mm; the weight ratio of the silica gel modified epoxy resin to the silicon carbide is 1:5; the thickness of the anti-slip layer is 6mm.
The performance test was performed after the track anti-slip coating of examples 1-2 and comparative example 1 was immersed in water for 10 hours, and the results are shown in table 1.
The method for the water immersion test of the track anti-slip coating comprises the following steps: the substrate having the track anti-slip coating layer was horizontally placed, and then an aqueous solution of 25 c was continuously sprayed to the surface of the track anti-slip coating layer for 10 hours, and then the test sample was taken out.
The performance test items include:
(1) Coefficient of friction (dry road surface), detection method: GB/T26987-2011.
(2) Adhesion, detection method: ASTM4541.
(3) Abrasion resistance (weight loss), detection method: GB/T1768-1979.
(4) Impact resistance, method of detection: ASTM D5265.
TABLE 1
| Coefficient of friction | Adhesive force (MPa) | Abrasion resistance (%) | Impact resistance (MPa) | |
| Example 1 | 0.85 | 3.94 | 1.3 | 52.1 |
| Example 2 | 0.81 | 3.93 | 2.4 | 48.6 |
| Comparative example 1 | 0.04 | 0.01 | 0.9 | 3.5 |
As can be seen from the table, the track anti-skid coating provided by the invention still maintains high friction coefficient, adhesive force, wear resistance and impact resistance after being soaked in water for 10 hours, so that the anti-skid performance of the track coating is greatly improved, and the problem of wheel skidding of a vehicle in rainy and snowy weather can be effectively solved.
As is clear from comparative example 1, since the waterproof layer was not provided, the friction coefficient, the adhesion, the wear resistance and the impact resistance of the anti-slip coating layer were greatly reduced after the track anti-slip coating layer was subjected to the water immersion treatment for 10 hours, which is probably due to the fact that the adhesion between the anti-slip coating layer and the substrate was reduced during the water immersion treatment for a long period of time, and the anti-slip coating layer could not be firmly adhered to the substrate.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (17)
1. The anti-skid coating for the track is characterized by comprising an adhesive layer (210), a waterproof layer (220), an intermediate layer (230) and an anti-skid layer (240), wherein the adhesive layer (210) is suitable for being arranged on a track body, the waterproof layer (220) is arranged on the adhesive layer (210), and the anti-skid layer (240) is arranged on one side, away from the adhesive layer (210), of the waterproof layer (220); the waterproof layer (220) is a methacrylic resin layer; the anti-slip layer (240) includes an anti-slip resin and hard particles filled in the anti-slip resin.
2. The track anti-slip coating according to claim 1, wherein the mass ratio of the anti-slip resin to the hard particles is 1 (2-8), preferably 1 (3-5).
3. The track non-slip coating of claim 1, wherein the hard particles have a particle size of 1-3mm.
4. The track non-slip coating of claim 1, wherein the non-slip resin is a silicone modified epoxy resin; the hard particles are selected from one or more of corundum, quartz sand and corundum sand.
5. The track non-slip coating of claim 1, wherein the adhesive layer (210) comprises an adhesive and an antioxidant;
The adhesive is epoxy resin adhesive;
The antioxidant is epoxy zinc-rich paint;
the volume ratio of the adhesive to the antioxidant is 1 (2-2.8), preferably 1 (2-2.5).
6. The track non-slip coating of claim 1, wherein the adhesive layer (210) is selected from one or more of an epoxy adhesive, an unsaturated polyester adhesive, an acrylic adhesive, and a polyurethane adhesive.
7. The track anti-slip coating of claim 1, wherein the anti-slip coating comprises at least 2 layers of waterproof layer (220).
8. The track anti-slip coating according to claim 1, wherein the intermediate layer (230) is arranged between the waterproof layer (220) and the anti-slip layer (240); the intermediate layer (230) is a methacrylate copolymer.
9. The track anti-slip coating according to claim 1, wherein the adhesive layer (210) has a thickness of 1-2mm; and/or
The thickness of the waterproof layer (220) is 2-3mm; and/or
The thickness of the middle layer (230) is 1-2mm; and/or
The thickness of the anti-slip layer (240) is 5-6mm.
10. A method for preparing an anti-slip coating for a track, the method comprising the steps of:
Performing first spraying on the surface of the track body to form an adhesive layer;
performing second spraying on the surface of the bonding layer to form at least one waterproof layer;
and performing third spraying on the surface of the waterproof layer to form an intermediate layer, and pouring anti-slip slurry on the surface of the intermediate layer to form an anti-slip layer.
11. The method of claim 10, wherein a time interval between a completion time of the first spray and a start time of the second spray is 0.5-1 hour.
12. The method of claim 10, wherein the conditions of the first spray include: the bonding layer comprises an adhesive and an antioxidant; the volume ratio of the adhesive to the antioxidant is 1 (2-2.8);
The thickness of the bonding layer is 1-2mm.
13. The method of claim 10, wherein the waterproof layer comprises a first waterproof layer and a second waterproof layer;
The first waterproof layer and the second waterproof layer are both methacrylic resin layers;
The thickness of each of the first waterproof layer and the second waterproof layer is 1-1.5mm.
14. The method of claim 13, wherein a time interval between a start time of spray forming the first water barrier and a start time of spray forming the second water barrier is greater than 10 minutes.
15. The method of claim 10, wherein the intermediate layer is a methacrylate copolymer;
a time interval between a time when the third spraying is started and a time when the second spraying is completed is greater than 30 minutes;
The thickness of the intermediate layer is 1-2mm.
16. The method of claim 10, wherein casting the slip resistant slurry conditions comprises: the anti-slip slurry comprises anti-slip resin and hard particles, and the temperature of the anti-slip resin is 175-185 ℃;
The mass ratio of the anti-skid resin to the hard particles is 1 (2-8);
The thickness of the anti-slip layer is 5-6mm.
17. A rail beam, characterized in that it comprises a rail body comprising a rail running surface on which the rail anti-slip coating according to any one of claims 1-9 is arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311861987.1A CN118222154A (en) | 2023-12-28 | 2023-12-28 | Rail anti-slip coating and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311861987.1A CN118222154A (en) | 2023-12-28 | 2023-12-28 | Rail anti-slip coating and preparation method and application thereof |
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| CN118222154A true CN118222154A (en) | 2024-06-21 |
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| CN202311861987.1A Pending CN118222154A (en) | 2023-12-28 | 2023-12-28 | Rail anti-slip coating and preparation method and application thereof |
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