Wear-resistant steel wire rope and preparation method thereof

Abstract

The invention relates to the technical field of steel wire ropes, and particularly discloses a wear-resistant steel wire rope and a preparation method thereof. A wear-resistant steel wire rope comprises a rope core, a filling layer and an outer protective layer, the filling layer is located between the rope core and the outer protective layer, a steel wire is wound around the outer side of the rope core, and the outer protective layer is prepared from, by weight, 60-80 parts of epoxy resin, 20-30 parts of hydroxyl-terminated liquid nitrile rubber, 5-8 parts of 2, 4-toluene diisocyanate and 8-15 parts of inorganic filler. 1-3 parts of a curing agent and 1-3 parts of a chain extender; the filling layer comprises carbon fibers; according to the steel wire rope, the filling layer and the outer protective layer are combined, and under the synergistic effect of all the components, the prepared steel wire rope can have good strength, abrasion resistance and impact toughness.

Description

Technical Field

[0001] The present application relates to the technical field of steel wire ropes, and in particular to a wear-resistant steel wire rope and a preparation method thereof. Background Art

[0002] With the development of modern transportation, people have higher and higher requirements for driving safety. Brake lines are mostly made of ordinary steel wire ropes, which are prone to performance degradation or even breakage due to wear during long-term use. In particular, when the steel wire rope is subjected to bending force, internal wear is more likely to occur. Wear will directly cause the diameter of the steel wire rope to decrease, and microcracks will appear on the surface of the worn steel wire. When the steel wire is bent and deformed, the microcracks will gradually expand and even break, causing the steel wire rope to fail.

[0003] The industry generally adopts a variety of methods to improve its wear resistance and life, and common methods include adding an external protective layer and optimizing the internal structure. Adding a layer of nylon sheath or other types of plastic protective layer on the outside of the wire rope can effectively reduce the impact of the external environment on the wire rope, thereby extending its service life. However, in actual applications, the friction and support between the internal steel wire layer and the outer sheath are insufficient, and relative sliding is prone to occur, and there will still be a certain degree of wear problems. Summary of the invention

[0004] In order to improve the wear problem of existing steel wire ropes, the present application provides a wear-resistant steel wire rope and a preparation method thereof.

[0005] In a first aspect, the present application provides a wear-resistant steel wire rope, which adopts the following technical solution: A wear-resistant steel wire rope comprises a rope core, a filling layer and an outer protective layer, wherein the filling layer is located between the rope core and the outer protective layer, a steel wire is wound around the outer side of the rope core, and the outer protective layer comprises the following raw materials in parts by weight: 60-80 parts of epoxy resin, 20-30 parts of hydroxyl-terminated liquid nitrile rubber, 5-8 parts of 2,4-toluene diisocyanate, 8-15 parts of inorganic filler, 1-3 parts of curing agent, and 1-3 parts of chain extender; the filling layer comprises carbon fiber.

[0006] By adopting the above technical solution, after the steel wire is wrapped around the outside of the rope core and then compounded with the carbon fiber filling layer, the rope core and steel wire can provide basic support and strength, and the carbon fiber filling layer can withstand greater stress without deformation, which helps to disperse the stress of the steel wire rope during use and reduce fatigue and breakage of the steel wire. The density of carbon fiber is much lower than that of steel, which can reduce the weight of the steel wire rope and improve operating efficiency and safety.

[0007] The use of epoxy resin in the outer protective layer provides the protective layer with better adhesion, chemical corrosion resistance and strength, and enables the outer protective layer to be firmly bonded to the outer surface of the filling layer, thereby enhancing the strength and wear resistance of the steel wire rope. Epoxy resin, hydroxyl-terminated liquid nitrile rubber, and 2,4-toluene diisocyanate can cross-link to form a polymer, thereby improving the flexibility of the outer protective layer, reducing the cracking caused by the brittleness of the single epoxy resin curing, and improving the impact toughness, stiffness and wear resistance of the steel wire rope.

[0008] Preferably, the inorganic filler is at least one of ceramic microbeads, corundum and molybdenum disulfide.

[0009] By adopting the above technical solution, ceramic micro beads, corundum and molybdenum disulfide can improve the wear resistance and scratch resistance of the protective layer by filling the gaps of the materials, while enhancing the overall wear resistance of the wire rope. Ceramic micro beads and corundum provide hardness and wear resistance, while molybdenum disulfide provides lubricity and reduces friction, thereby improving the wear resistance of the wire rope.

[0010] Preferably, the chain extender is one of tetraethylenepentamine and polyamide 651.

[0011] Preferably, the rope core is three fiber filaments, and the cellulose is formed into the rope core in a spiral twisting manner.

[0012] Preferably, the carbon fiber is polyacrylonitrile carbon fiber.

[0013] By adopting the above technical solutions, polyacrylonitrile carbon fiber has higher tensile strength, chemical corrosion resistance, hardness and wear resistance, can effectively resist external wear, and improve the strength and wear resistance of wire rope. At the same time, polyacrylonitrile carbon fiber has a low density, which makes the wire rope lighter while maintaining high strength, improving operational efficiency and safety.

[0014] Preferably, the polyacrylonitrile carbon fiber is pre-grafted with polydopamine and polyethyleneimine, and the grafting method comprises the following specific steps: dissolving trishydroxymethylaminomethane in water in advance to form a buffer solution A, adjusting the pH of the buffer solution A to 8-9 with hydrochloric acid, and then adding dopamine and polyacrylonitrile carbon fiber to the buffer solution A, stirring for reaction, and then centrifuging, washing, and drying to obtain dopamine-modified carbon fiber; Dissolve tris(hydroxymethyl)aminomethane) in water to form a buffer solution B, adjust the pH of the buffer solution B to 8-9 with hydrochloric acid, add polyethyleneimine and dopamine modified carbon fiber to the buffer solution B, stir for reaction, wash with water and vacuum dry to obtain grafted polyacrylonitrile carbon fiber.

[0015] By adopting the above technical solution, dopamine can self-polymerize on the surface of carbon fiber to form polydopamine. The hydroxyl and amino groups on the surface of polydopamine can improve the surface activity of carbon fiber. The amino and imino structures in the polyethyleneimine molecular chain can react with the epoxy resin and polydopamine of the outer protective layer, thereby promoting the carbon fiber to better combine with the outer protective layer, thereby improving the overall strength of the wire rope. By grafting polydopamine and polyethyleneimine on the surface of carbon fiber, the amino and imino groups in the polyethyleneimine molecular chain are used to enhance the interfacial bonding strength between the carbon fiber and the outer protective layer, thereby reducing the separation phenomenon between the carbon fiber filling layer and the outer protective layer; at the same time, the friction force on the surface of the outer protective layer can be effectively transferred to the carbon fiber, thereby slowing down the expansion of cracks in the wire rope and improving the wear resistance of the wire rope.

[0016] Preferably, the dopamine content in the buffer solution A is 1-3 mg / L, and the polyethyleneimine content in the buffer solution B is 1-3 mg / L.

[0017] In a second aspect, the present application provides a method for preparing a wear-resistant steel wire rope, which adopts the following technical solution: A method for preparing a wear-resistant steel wire rope comprises the following steps: twisting a steel wire into a strand, and then twisting a rope core in a right-cross twisting manner to form a steel wire rope body, and then weaving carbon fiber into a carbon fiber cloth and fixing it on the outside of the steel wire rope body by hot pressing to obtain a filling layer; then mixing hydroxyl-terminated liquid nitrile rubber and 2,4-toluene diisocyanate, heating to 80-90°C for reaction to obtain a nitrile rubber prepolymer, and then mixing the nitrile rubber prepolymer with an epoxy resin, an inorganic filler, a chain extender, and a dispersant, heating to melt, stirring evenly, adding a curing agent and stirring evenly to form an outer protective layer mixture, coating the outer protective layer mixture on the outer surface of the filling layer, and drying to form an outer protective layer to obtain the wear-resistant steel wire rope.

[0018] By adopting the above technical solution, the carbon fiber and the main body of the steel wire rope are tightly combined through high temperature and pressure to form a whole. Hot pressing can strengthen the interface between the carbon fiber and the steel wire, and improve the bonding strength and wear resistance of the composite material. Then compounded with the outer protective layer mixture, it can not only effectively resist external wear, but also withstand higher loads and increase the service life of the steel wire rope.

[0019] Preferably, the heating melting temperature of the outer protective layer is 150-170°C.

[0020] In summary, this application has the following beneficial effects: 1. Since the present application adopts the method of winding steel wire around the outside of the rope core and then compounding it with the carbon fiber filling layer, the rope core and the steel wire can provide basic support and strength, and the carbon fiber filling layer disperses the stress of the steel wire rope during use, reducing fatigue and breakage of the steel wire. The use of epoxy resin, hydroxyl-terminated liquid nitrile rubber, and 2,4-toluene diisocyanate in the outer protective layer can cross-link to form a polymer, improve the flexibility of the outer protective layer, and promote the outer protective layer to be firmly bonded to the outer surface of the filling layer, thereby enhancing the strength and wear resistance of the steel wire rope.

[0021] 2. The filling layer in this application uses polyacrylonitrile carbon fiber, which can effectively resist external wear and improve the strength and wear resistance of the steel wire rope. At the same time, the polyacrylonitrile carbon fiber is grafted with polydopamine and polyethyleneimine, and the surface active groups of polydopamine on the surface of polyacrylonitrile carbon fiber are grafted with polyethyleneimine. The amino and imino structures in the polyethyleneimine molecular chain can react with the epoxy resin of the outer protective layer to enhance the interface bonding strength between the filling layer and the outer protective layer, reduce the separation of the filling layer and the outer protective layer, and improve the overall strength of the steel wire rope. DETAILED DESCRIPTION

[0022] The present application is further described in detail below with reference to the embodiments.

[0023] All raw materials in the examples are commercially available.

[0024] The curing agent is a conventional epoxy resin curing agent. In this embodiment, the curing agent is purchased from T31-1 epoxy curing agent of Shandong Pinshang New Materials Co., Ltd. Example

[0025] Example 1 This embodiment provides a wear-resistant steel wire rope, including a rope core, a filling layer and an outer protective layer, the filling layer is located between the rope core and the outer protective layer, the filling layer is carbon fiber, the average diameter of the carbon fiber is 7μm, the length is 20-50μm, the rope core is three polyester fiber filaments in a spiral twisting manner, and the outer side of the rope core is wound with steel wire. The outer protective layer includes the following raw materials in parts by weight: 70kg of epoxy resin, 25kg of hydroxyl-terminated liquid nitrile rubber, 7kg of 2,4-toluene diisocyanate, 12kg of inorganic filler, 2kg of curing agent, and 2kg of chain extender; the inorganic filler is ceramic microbeads, the average particle size of the inorganic filler is 50μm, and the chain extender is tetraethylenepentamine.

[0026] The preparation method of the wear-resistant steel wire rope comprises the following specific steps: S1: The steel wire is twisted into one strand, and then the rope core is twisted in a right-hand alternating twist manner to form the main body of the steel wire rope. The carbon fiber is then woven into a carbon fiber cloth with a thickness of 2 mm, and hot-pressed and fixed to the outside of the steel wire rope main body at 600°C to form a filling layer.

[0027] S2: Mix terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate, heat to 85°C and react for 4 hours to obtain nitrile rubber prepolymer, then mix the nitrile rubber prepolymer with epoxy resin, inorganic filler and chain extender, heat to 170°C to melt, stir evenly and react for 3 hours, add curing agent and stir evenly to form an outer protective layer mixture, apply the outer protective layer mixture on the outer surface of the filling layer, dry to form an outer protective layer with a thickness of 2 mm, and obtain a wear-resistant steel wire rope.

[0028] Example 2 The difference between Example 2 and Example 1 is that the amount of epoxy resin used in the outer protective layer raw material is 60 kg, the amount of terminal hydroxyl liquid nitrile rubber used is 20 kg, the amount of 2,4-toluene diisocyanate used is 5 kg, the amount of inorganic filler used is 8 kg, the amount of curing agent used is 1 kg, and the amount of chain extender used is 1 kg.

[0029] Example 3 The difference between Example 3 and Example 1 is that the amount of epoxy resin used in the raw material of the outer protective layer is 80 kg, the amount of terminal hydroxyl liquid nitrile rubber used is 30 kg, the amount of 2,4-toluene diisocyanate used is 8 kg, the amount of inorganic filler used is 15 kg, the amount of curing agent used is 3 kg, and the amount of chain extender used is 3 kg.

[0030] Example 4 The difference between Example 4 and Example 1 is that the inorganic filler in the raw material of the outer protective layer is a mixture of ceramic microbeads, corundum and molybdenum disulfide, and the mass ratio of the inorganic filler to ceramic microbeads, corundum and molybdenum disulfide is 1:1:1.

[0031] Example 5 The difference between Example 5 and Example 4 is that the carbon fiber in the filling layer is polyacrylonitrile carbon fiber. The polyacrylonitrile carbon fiber is purchased from Nanjing Glass Fiber Research Institute and has a density of 1.77 g / cm 3 , with an average diameter of 7μm and a length of 20-50μm.

[0032] Example 6 The difference between Example 6 and Example 5 is that the polyacrylonitrile carbon fiber of the filling layer is pre-grafted with polydopamine and polyethyleneimine.

[0033] The preparation method of the wear-resistant steel wire rope comprises the following specific steps: S1: Dissolve tris(hydroxymethylaminomethane) in water in advance, the mass ratio of tris(hydroxymethylaminomethane) to water is 1:100, to form a buffer solution A, adjust the pH of the buffer solution A to 8.5 with hydrochloric acid, then add dopamine and polyacrylonitrile carbon fiber to the buffer solution A, the concentration of dopamine in the buffer solution A is 2 mg / L, stir the reaction for 12 hours, then centrifuge, wash, and dry to obtain dopamine-modified carbon fiber.

[0034] S2: Dissolve tris(hydroxymethylaminomethane) in water, the mass ratio of hydroxymethylaminomethane to water is 1:100, to form a buffer solution B, adjust the pH of the buffer solution B to 8-9 with hydrochloric acid, add polyethyleneimine and dopamine modified carbon fiber to the buffer solution B, the concentration of polyethyleneimine in the buffer solution B is 2 mg / L, stir the reaction, wash with water, and vacuum dry to obtain the grafted polyacrylonitrile carbon fiber.

[0035] S3: The steel wire is twisted into one strand, and then the rope core is twisted in a right-hand alternating twist manner to form a steel wire rope body. The polyacrylonitrile carbon fiber is then woven into a polyacrylonitrile carbon fiber cloth with a thickness of 2 mm, which is hot-pressed and fixed to the outside of the steel wire rope body at 600°C to form a filling layer.

[0036] S4: Mix terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate, heat to 85°C and react for 4 hours to obtain nitrile rubber prepolymer, then mix the nitrile rubber prepolymer with epoxy resin, inorganic filler and chain extender, heat to 170°C to melt, stir evenly and react for 3 hours, add curing agent and stir evenly to form an outer protective layer mixture, apply the outer protective layer mixture on the outer surface of the filling layer, dry to form an outer protective layer with a thickness of 2 mm, and obtain a wear-resistant steel wire rope.

[0037] Example 7 The difference between Example 7 and Example 6 is that the method for preparing the wear-resistant steel wire rope comprises the following specific steps: S1: Dissolve tris(hydroxymethylaminomethane) in water in advance, the mass ratio of tris(hydroxymethylaminomethane) to water is 1:100, to form a buffer solution A, adjust the pH of the buffer solution A to 8.5 with hydrochloric acid, then add dopamine and polyacrylonitrile carbon fiber to the buffer solution A, the concentration of dopamine in the buffer solution A is 2 mg / L, stir the reaction for 12 hours, then centrifuge, wash, and dry to obtain dopamine-modified polyacrylonitrile carbon fiber.

[0038] S2: The steel wire is twisted into one strand, and then the rope core is twisted in a right-hand alternating twist manner to form the main body of the steel wire rope. The polyacrylonitrile carbon fiber is then woven into a polyacrylonitrile carbon fiber cloth with a thickness of 2 mm, which is hot-pressed and fixed to the outside of the steel wire rope main body at 600°C to form a filling layer.

[0039] S3: Mix terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate, heat to 85°C and react for 4 hours to obtain nitrile rubber prepolymer, then mix the nitrile rubber prepolymer with epoxy resin, inorganic filler and chain extender, heat to 170°C to melt, stir evenly and react for 3 hours, add curing agent and stir evenly to form an outer protective layer mixture, apply the outer protective layer mixture on the outer surface of the filling layer, dry to form an outer protective layer with a thickness of 2 mm, and obtain a wear-resistant steel wire rope.

[0040] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that no filling layer is used in the wear-resistant steel wire rope.

[0041] The preparation method of the wear-resistant steel wire rope comprises the following specific steps: S1: The steel wire is twisted into one strand, and then the rope core is twisted in a right-hand alternating twist manner to form the main body of the wire rope.

[0042] S2: Mix terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate, heat to 85°C and react for 4 hours to obtain nitrile rubber prepolymer, then mix the nitrile rubber prepolymer with epoxy resin, inorganic filler and chain extender, heat to 170°C to melt, stir evenly and react for 3 hours, add curing agent and stir evenly to form an outer protective layer mixture, apply the outer protective layer mixture on the outer surface of the steel wire rope body, dry to form an outer protective layer with a thickness of 2 mm, and obtain a wear-resistant steel wire rope.

[0043] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the hydroxyl-terminated liquid nitrile rubber, 2,4-toluene diisocyanate and chain extender are not used in the raw materials of the outer protective layer.

[0044] The preparation method of the wear-resistant steel wire rope comprises the following specific steps: S1: The steel wire is twisted into one strand, and then the rope core is twisted in a right-hand alternating twist manner to form the main body of the steel wire rope. The carbon fiber is then woven into a carbon fiber cloth with a thickness of 2 mm, and hot-pressed and fixed to the outside of the steel wire rope main body at 600°C to form a filling layer.

[0045] S2: Mix epoxy resin and inorganic filler, heat to 170°C to melt, stir and react evenly for 3 hours, add curing agent and stir evenly to form an outer protective layer mixture, apply the outer protective layer mixture on the outer surface of the filling layer, dry to form an outer protective layer with a thickness of 2 mm, and obtain a wear-resistant steel wire rope.

[0046] Performance testing According to the wear-resistant steel wire ropes provided in Examples 1-7 and Comparative Examples 1-2 of the present application, the following performance tests were performed, and the specific test results are shown in Table 1.

[0047] Detection Methods 1. Wear resistance The wear resistance of the steel wire rope prepared in the present application was tested with reference to the standard GB / T9867-2008 "Determination of wear resistance of vulcanized rubber or thermoplastic rubber (rotating roller abrader method)".

[0048] 2. Tensile strength and elongation at break With reference to the standard GB / T528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber", the tensile strength and elongation at break of the steel wire rope prepared in the present application were tested.

[0049] 3. Tear resistance The right-angle tear strength of the steel wire rope prepared in the present application was tested with reference to the standard GB / T529-2008 "Determination of tear strength of vulcanized rubber or thermoplastic rubber".

[0050] Table 1: Performance test results data table It can be seen from the performance test results that the steel wire rope prepared in the present application has good wear resistance and strength. By comparing Comparative Example 1 with Example 1, it can be seen that Comparative Example 1 does not use a filling layer, and the outer protective layer is in direct contact with the steel wire rope core, resulting in a reduction in the bearing capacity and supporting force inside the steel wire rope, and the strength and wear resistance of the steel wire rope will be significantly reduced, thereby shortening the service life of the steel wire rope. By comparing Comparative Example 2 with Example 1, it can be seen that Comparative Example 2 does not use terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate, and the degree of crosslinking in the outer protective layer system is reduced. It is easy to produce insufficient toughness after curing with only a single epoxy resin, which further leads to cracking and wear of the steel wire rope. It further illustrates that epoxy resin, terminal hydroxyl liquid nitrile rubber, and 2,4-toluene diisocyanate can cross-link to form a polymer, which can promote the outer protective layer to have good flexibility and impact toughness, thereby reducing the phenomenon of wear and cracking.

[0051] It can be seen from Example 5 that polyacrylonitrile carbon fiber is used in Example 5. From the performance test results, it can be seen that the steel wire ropes prepared in Example 5 have good strength and wear resistance, which further illustrates that the use of polyacrylonitrile carbon fiber can effectively resist external wear and improve the strength and wear resistance of the steel wire rope.

[0052] By comparing Example 6 with Example 7, it can be seen that in Example 6, the tensile strength of the steel wire rope prepared by grafting polyacrylonitrile carbon fiber with polydopamine and polyethyleneimine reaches 29.4MPa, and the volume wear is reduced to 36.0mm 3. In Example 7, the carbon fiber is not grafted with polyethyleneimine. From the performance test results, it can be seen that the wear resistance, strength and tear resistance of the steel wire rope are significantly reduced. It is further explained that the carbon fiber is first grafted with polydopamine, and the hydroxyl and amino groups on the surface of polydopamine can be used to further graft polyethyleneimine. The amino and imino structures in the polyethyleneimine molecular chain can react with the epoxy resin of the outer protective layer, further enhancing the interface bonding force between the filling layer and the outer protective layer, reducing the separation phenomenon of the carbon fiber filling layer and the outer protective layer, and improving the overall strength and wear resistance of the steel wire rope.

[0053] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A wear-resistant steel wire rope, characterized in that: It comprises a rope core, a filling layer and an outer protective layer, wherein the filling layer is located between the rope core and the outer protective layer, a steel wire is wound around the outer side of the rope core, and the outer protective layer comprises the following raw materials in parts by weight: 60-80 parts of epoxy resin, 20-30 parts of terminal hydroxyl liquid nitrile rubber, 5-8 parts of 2,4-toluene diisocyanate, 8-15 parts of inorganic filler, 1-3 parts of curing agent, and 1-3 parts of chain extender; the filling layer comprises carbon fiber.

2. The wear-resistant steel wire rope according to claim 1, characterized in that: The inorganic filler is at least one of ceramic microbeads, corundum and molybdenum disulfide.

3. The wear-resistant steel wire rope according to claim 1, characterized in that: The chain extender is one of tetraethylenepentamine and polyamide 651.

4. The wear-resistant steel wire rope according to claim 1, characterized in that: The rope core is composed of three fiber filaments, and the cellulose is formed by spiral twisting.

5. The wear-resistant steel wire rope according to claim 1, characterized in that: The carbon fiber is polyacrylonitrile carbon fiber.

6. The wear-resistant steel wire rope according to claim 5, characterized in that: The polyacrylonitrile carbon fiber is pre-grafted with polydopamine and polyethyleneimine, and the grafting method comprises the following specific steps: dissolving trishydroxymethylaminomethane in water in advance to form a buffer solution A, adjusting the pH of the buffer solution A to 8-9 with hydrochloric acid, then adding dopamine and polyacrylonitrile carbon fiber to the buffer solution A, stirring for reaction, and then centrifuging, washing, and drying to obtain dopamine-modified carbon fiber; Dissolve tris(hydroxymethyl)aminomethane) in water to form a buffer solution B, adjust the pH of the buffer solution B to 8-9 with hydrochloric acid, add polyethyleneimine and dopamine modified carbon fiber to the buffer solution B, stir for reaction, wash with water and vacuum dry to obtain grafted polyacrylonitrile carbon fiber.

7. The wear-resistant steel wire rope according to claim 6, characterized in that: The dopamine content in the buffer solution A is 1-3 mg / L, and the polyethyleneimine content in the buffer solution B is 1-3 mg / L.

8. A method for preparing a wear-resistant steel wire rope according to any one of claims 1 to 7, characterized in that: The specific steps include: The steel wire is wrapped and twisted into one strand, and then the rope core is wrapped and twisted in a right-hand alternating twist manner to form a steel wire rope body, and then the carbon fiber is woven into a carbon fiber cloth and fixed outside the steel wire rope body by hot pressing to obtain a filling layer; Then, the terminal hydroxyl liquid nitrile rubber and 2,4-toluene diisocyanate are mixed, heated to 80-90°C for reaction to obtain a nitrile rubber prepolymer, and then the nitrile rubber prepolymer is mixed with an epoxy resin, an inorganic filler, and a chain extender, heated to melt, stirred evenly, a curing agent is added and stirred evenly to form an outer protective layer mixture, the outer protective layer mixture is applied to the outer surface of the filling layer, and dried to form an outer protective layer to obtain a wear-resistant steel wire rope.

9. The method for preparing the wear-resistant steel wire rope according to claim 8, characterized in that: The heating melting temperature of the outer protective layer is 150-170°C.

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