A high-strength, abrasion-resistant fiber for a traction rope

Abstract

The present application relates to the technical field of traction rope, and particularly relates to a high-strength friction-resistant fiber traction rope, which comprises a composite fiber rope core and an outer layer steel wire strand wrapped around the composite fiber rope core, and the composite fiber rope core is composed of carbon fiber and basalt fiber composite twisting; composite electroplating treatment is performed on the steel wire constituting the outer layer steel wire strand, and then a protective coating prepared by using composite nanometer silicon carbide, micron silicon dioxide and self-repairing coating containing disulfide bond is coated, so that a self-repairing super-hydrophobic wear-resistant surface is constructed on the surface of the traction rope, the traction rope is endowed with good mechanical damage resistance, and the durability of the traction rope in friction resistance and corrosion resistance is improved; a zinc-cerium metal framework with 2-methyl imidazole as an organic ligand is in-situ grown on the silicon carbide nanowire, and the zinc-cerium metal framework serves as a nano container of a sulfur-containing heterocyclic amino alcohol corrosion inhibitor prepared by using 2-thiophenemethylamine and ethylene glycol diglycidyl ether.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traction ropes, and particularly relates to a high-strength friction-resistant fiber traction rope. BACKGROUND

[0002] With the advancement of urbanization, the number of high-rise buildings in various places is increasing, and elevators are the main transport tools for vertical transportation in high-rise buildings, and the traction rope is an important part of the elevator, and the performance of the traction rope has a great influence on the safety of the elevator.

[0003] Traditional elevator traction ropes are mostly steel wire ropes, which are flexible ropes twisted by multiple or multiple thin steel wires. However, because the elevator shaft is usually dark and humid, it is easy to cause the steel wire to rust and wear, thereby greatly reducing the service life of the steel wire rope. SUMMARY

[0004] The present application aims to provide a high-strength friction-resistant fiber traction rope to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme:

[0006] A high-strength friction-resistant fiber traction rope comprises a composite fiber rope core and an outer layer steel wire strand wrapped around the composite fiber rope core, the composite fiber rope core is composed of carbon fibers and basalt fibers by composite twisting, and the steel wire strand is twisted by a plurality of modified steel wires.

[0007] Further, the composite fiber rope core is twisted by 30-40 yarns, and the mass ratio of carbon fibers to basalt fibers is 2:1.

[0008] Further, the number of outer layer steel wire strands is 8-10 strands, and each steel wire strand is twisted by 21-31 modified steel wires.

[0009] Further, the preparation of the modified steel wire comprises the following steps:

[0010] S1: taking steel wire as raw material, sequentially performing alkali washing, acid washing, drawing treatment, drying to obtain a base material;

[0011] S2: preparing a composite plating solution by using composite nanosilicon carbide;

[0012] S3: placing the base material into the composite plating solution to perform composite electroplating to obtain a pretreated base material;

[0013] S4: preparing a protective coating by using composite nanosilicon carbide, micron-sized silicon dioxide and self-repairing coating containing disulfide bonds;

[0014] S5: coating the protective coating on the surface of the pretreated base material, solidifying to form a protective layer, and obtaining a modified steel wire.

[0015] Further, the composition of the composite plating solution is: deionized water as solvent, wherein nickel sulfate 32 g / L, sodium hypophosphite 18 g / L, sodium tungstate 8 g / L, sodium citrate 42 g / L, ammonium sulfate 28 g / L, composite nanometer silicon carbide 3 g / L, sodium dodecyl sulfate 1 g / L.

[0016] Further, the working conditions of the composite electroplating are: electroplating time is 15-20 min, temperature is 50-55℃, current density is 2 A / dm2.

[0017] Further, the working conditions of the drawing treatment are: temperature is 140℃-150℃, drawing speed control is 2-3 m / s.

[0018] Further, the composition of the protective coating is: composite nanometer silicon carbide 2-4 parts, micron silicon dioxide 1-2 parts, self-repairing coating containing disulfide bond 25-27 parts by mass fraction.

[0019] Further, the preparation of the composite nanometer silicon carbide includes the following steps:

[0020] The SiC nanowire, methanol, zinc nitrate hexahydrate, cerium nitrate hexahydrate, and methanol are mixed, ultrasonic stirring is performed for 5-10 min, stirring is performed at 18-25℃ for 50-60 min, the mixture of 2-methyl imidazole and methanol is added, the temperature is raised to 30-40℃ for 5-6 h, the amino alcohol compound containing sulfur heterocycle is added, ultrasonic stirring is performed for 1-2 h, filtration, washing, and drying are performed to obtain the composite nanometer silicon carbide.

[0021] Further, the preparation of the self-repairing coating containing disulfide bond includes the following steps:

[0022] (1) D-cystine, sulfur chloride, and methanol are mixed, and the temperature is maintained at 55-60℃ for 10-12 h, rotary evaporation is performed to obtain cystine dimethyl ester dihydrochloride; cystine dimethyl ester dihydrochloride, N,N-dimethylformamide, and triethanolamine are mixed, and stirring is continued for 10-12 h, then reduced pressure filtration is performed to obtain cystine dimethyl ester;

[0023] (2) Under a nitrogen atmosphere, isophorone diisocyanate, polytetrahydrofuran, and N,N-dimethylformamide are mixed, the temperature is raised to 68-72℃, dibutyltin dilaurate is added, and the temperature is maintained for 3-4 h to obtain prepolymer A;

[0024] (3) Under a nitrogen atmosphere, the amino alcohol compound containing sulfur heterocycle, isophorone diisocyanate, and N,N-dimethylformamide are mixed, the temperature is raised to 68-72℃, dibutyltin dilaurate is added, and the temperature is maintained for 3-4 h to obtain prepolymer B;

[0025] (4) mixing prepolymer A, prepolymer B, amino-terminated polydimethylsiloxane, N,N-dimethylformamide, adding a mixture of cystine dimethyl ester and deionized water in an ice bath to 0 DEG C, and incubating for 30-40 min to obtain a self-repairing coating containing a disulfide bond.

[0026] Further, the preparation of the amino alcohol compound containing sulfur heterocycle comprises the following steps: mixing 2-thiophenemethylamine and ethylene glycol diglycidyl ether, stirring at 40-45 DEG C for 7-8 h, purifying through a silica gel column, and drying to obtain the amino alcohol compound containing sulfur heterocycle.

[0027] The present application has the following advantages:

[0028] The present application provides a high-strength friction-resistant fiber traction rope, comprising a composite fiber rope core and an outer layer of steel wire strands wrapped around the composite fiber rope core, the composite fiber rope core is composed of carbon fibers with light specific gravity, large specific rigidity, high specific modulus, good corrosion resistance, small expansion coefficient and stable mechanical properties, and basalt fibers with stable mechanical properties, good thermal stability and acid and alkali corrosion resistance are twisted and combined; the steel wires constituting the outer layer of steel wire strands are subjected to composite electroplating treatment, and then coated with super-hydrophobic protective coating with self-repairing property to obtain high-strength modified steel wires with super-hydrophobic self-repairing surface, which greatly improves the friction resistance and corrosion resistance of the traction rope, thereby reducing the maintenance cost of the elevator structure and prolonging the maintenance cycle of the elevator.

[0029] The nickel-based Ni-W-P alloy plating layer is electroplated on the surface of the steel wire by electro-deposition method, and nano silicon carbide is introduced during electroplating to improve the wear resistance. In order to improve the deposition rate of nano silicon carbide, a zinc-cerium metal framework with 2-methyl imidazole as an organic ligand is in-situ grown on the silicon carbide nanowire to seal the nanopores on the plating layer. The zinc-cerium metal framework in-situ grown on the silicon carbide nanowire can be used as a nano container for the sulfur heterocycle-containing amino alcohol compound corrosion inhibitor prepared from 2-thiophenemethylamine and ethylene glycol diglycidyl ether. The composite nano silicon carbide is introduced into the composite electroplating solution, which improves the strength, wear resistance and corrosion resistance of the traction rope.

[0030] The protective coating prepared from the composite nano silicon carbide, micron-sized silicon dioxide and self-repairing coating containing a disulfide bond is coated on the surface of the modified steel wire to construct a self-repairing super-hydrophobic and wear-resistant surface on the surface of the traction rope, thereby endowing the traction rope with good mechanical damage resistance and improving the durability of the traction rope in terms of friction resistance and corrosion resistance.

[0031] The present application is prepared by using isophorone diisocyanate and polytetrahydrofuran to prepare prepolymer A, then using the amino alcohol compound with corrosion resistance containing sulfur heterocycle to prepare prepolymer B with isophorone diisocyanate, selecting the relatively low price D-cystine as raw material, synthesizing cysteine dimethyl ester containing disulfide bond as chain extender with methanol, triethanolamine and the like, using amino-terminated polydimethylsiloxane as end-capping agent to obtain self-repairing coating containing disulfide bond, using it as the base material of protective coating to endow the traction rope with self-repairing hydrophobic surface; introducing composite nanometer silicon carbide and micron silicon dioxide into the protective coating, and synergistically endowing the traction rope with super-hydrophobic wear-resistant surface by controlling the introduction amount, and the zinc and cerium metal skeleton in the composite nanometer silicon carbide can effectively improve the self-repairing rate and self-repairing property of the coating, and the complexity of mutual interconnection of various raw materials in the coating can effectively improve the solvent resistance of the coating, so that the performance of long-lasting wear resistance and corrosion resistance is effectively achieved. DETAILED DESCRIPTION

[0032] The technical solutions in the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0033] The technical solutions of the present application will be further described in detail below in combination with specific embodiments. It should be understood that the following embodiments are only used to explain the present application, and are not used to limit the present application.

[0034] Embodiment 1: A high-strength friction-resistant fiber traction rope, comprising a composite fiber rope core and an outer steel wire strand wrapped around the composite fiber rope core, the composite fiber rope core is composed of carbon fiber and basalt fiber composite twisting; the number of outer steel wire strands is 8, and each steel wire strand is twisted by 21 modified steel wires;

[0035] The composite fiber rope core is twisted by 30 yarns, and the mass ratio of carbon fiber to basalt fiber is 2:1;

[0036] The preparation of the modified steel wire comprises the following steps:

[0037] S1: taking steel wire as raw material, sequentially performing alkali washing, acid washing, drawing treatment, drying to obtain a base material;

[0038] The working conditions of the drawing treatment are that the temperature is 140 DEG C, and the drawing speed is controlled at 3 m / s;

[0039] S2: preparing a composite plating solution by using composite nanometer silicon carbide;

[0040] The composite plating solution is composed of deionized water as a solvent, wherein the nickel sulfate is 32 g / L, the sodium hypophosphite is 18 g / L, the sodium tungstate is 8 g / L, the sodium citrate is 42 g / L, the ammonium sulfate is 28 g / L, the composite nano silicon carbide is 3 g / L, and the sodium dodecyl sulfate is 1 g / L;

[0041] S3: The substrate is placed in the composite plating solution for composite electroplating to obtain a pretreated substrate;

[0042] The working conditions of the composite electroplating are as follows: the electroplating time is 15 min, the temperature is 55℃, the current density is 2 A / dm 2 ;

[0043] S4: A protective coating is prepared by using the composite nano silicon carbide, the micron silicon dioxide and the self-repairing coating containing a disulfide bond;

[0044] The protective coating is composed of the composite nano silicon carbide 2 parts, the micron silicon dioxide 1 part and the self-repairing coating containing a disulfide bond 25 parts in terms of mass fraction;

[0045] The preparation of the amino alcohol compound containing a sulfur heterocycle comprises the following steps: 50 mL of 2-thiophenemethylamine and 39 mL of ethylene glycol diglycidyl ether are mixed, the temperature is increased to 40℃, and stirring is performed for 8 h, and then the mixture is purified by silica gel column chromatography with a volume ratio of dichloromethane to methanol being 30:1, and dried to obtain the amino alcohol compound containing a sulfur heterocycle;

[0046] The preparation of the composite nano silicon carbide comprises the following steps:

[0047] 2 g of SiC nanowires, 80 mL of methanol, 8 mmol of zinc nitrate hexahydrate, 2 mmol of cerium nitrate hexahydrate and 80 mL of methanol are mixed, ultrasonic stirring is performed for 5 min, stirring is performed at 18℃ for 60 min, and then the mixture is added into a mixed solution of 3.28 g of 2-methylimidazole and 80 mL of methanol, the temperature is increased to 30℃, and the mixture is kept for 6 h, 1.2 g of the amino alcohol compound containing a sulfur heterocycle is added, ultrasonic stirring is performed for 1 h, and then the mixture is filtered, washed and dried to obtain the composite nano silicon carbide;

[0048] The preparation of the self-repairing coating containing a disulfide bond comprises the following steps:

[0049] (1) 4.9 g of D-cystine, 4.9 g of chlorosulfuric acid and 25 mL of methanol are mixed, and the mixture is kept at 55℃ for 12 h, and then rotary evaporation is performed to obtain cystine dimethyl ester dihydrochloride; 2.2 g of the cystine dimethyl ester dihydrochloride, 100 mL of N,N-dimethylformamide and 0.13 mol of triethanolamine are mixed, and then stirring is continuously performed for 10 h, and then the mixture is filtered under reduced pressure to obtain the cystine dimethyl ester;

[0050] (2) 4.44 g of isophorone diisocyanate, 10 g of polytetrahydrofuran, 25 mL of N,N-dimethylformamide were mixed under a nitrogen atmosphere, 25 mg of dibutyltin dilaurate was added at 68°C, and the mixture was kept at 68°C for 3 h to obtain a prepolymer A;

[0051] (3) 1.6 g of an amino alcohol compound containing a sulfur-containing heterocycle, 3.3 g of isophorone diisocyanate, 20 mL of N,N-dimethylformamide were mixed, 25 mg of dibutyltin dilaurate was added at 68°C, and the mixture was kept at 68°C for 3 h to obtain a prepolymer B;

[0052] (4) 8.7 g of the prepolymer A, 1.2 g of the prepolymer B, 1 g of an amino-terminated polydimethylsiloxane, 30 mL of N,N-dimethylformamide were mixed, and 2.1 g of cystamine dimethyl ester and 500 mL of deionized water were added to the mixture in an ice bath at 0°C, and the mixture was kept at 0°C for 30 min to obtain a self-repairing coating containing a disulfide bond;

[0053] S5: The protective coating was applied to the surface of the pretreated substrate, and was cured to form a protective layer, thereby obtaining a modified steel wire.

[0054] Example 2: A high-strength friction-resistant fiber tow rope, comprising a composite fiber rope core and an outer layer of steel wire strands wrapped around the composite fiber rope core, the composite fiber rope core being composed of carbon fibers and basalt fibers twisted together; the number of outer layer steel wire strands is 8, and each steel wire strand is twisted from 21 modified steel wires;

[0055] The composite fiber rope core is twisted from 30 yarns, and the mass ratio of carbon fibers to basalt fibers is 2:1;

[0056] The preparation of the modified steel wire comprises the following steps:

[0057] S1: Steel wire was used as raw material, and was subjected to alkaline cleaning, acid cleaning, drawing treatment, and drying in sequence to obtain a substrate;

[0058] The working conditions of the drawing treatment were as follows: the temperature was 145°C, and the drawing speed was controlled at 2.5 m / s;

[0059] S2: A composite plating solution was prepared using composite nanosilicon carbide;

[0060] The composition of the composite plating solution was as follows: deionized water was used as solvent, and the contents of nickel sulfate, sodium hypophosphite, sodium tungstate, sodium citrate, ammonium sulfate, composite nanosilicon carbide, and sodium dodecyl sulfate were 32 g / L, 18 g / L, 8 g / L, 42 g / L, 28 g / L, 3 g / L, and 1 g / L, respectively;

[0061] S3: The substrate was placed in the composite plating solution for composite electroplating to obtain a pretreated substrate;

[0062] The working conditions of the composite electroplating are: electroplating time is 18 min, temperature is 52 DEG C, current density is 2 A / dm 2 ;

[0063] S4: preparing a protective coating with the composite nanometer silicon carbide, micron silicon dioxide and self-repairing coating containing disulfide bond;

[0064] The protective coating comprises, in parts by mass, 3 parts of the composite nanometer silicon carbide, 1.5 parts of the micron silicon dioxide and 26 parts of the self-repairing coating containing disulfide bond;

[0065] The preparation of the amino alcohol compound containing sulfur heterocycle comprises the following steps: mixing 50 mL of 2-thiophenemethylamine and 39 mL of ethylene glycol diglycidyl ether, stirring at 42 DEG C for 7.5 h, purifying through silica gel column chromatography with a volume ratio of dichloromethane to methanol being 30:1, and drying to obtain the amino alcohol compound containing sulfur heterocycle;

[0066] The preparation of the composite nanometer silicon carbide comprises the following steps:

[0067] Mixing 2 g of SiC nanowire and 80 mL of methanol, adding 8 mmol of zinc nitrate hexahydrate, 2 mmol of cerium nitrate hexahydrate and 80 mL of methanol, ultrasonic stirring for 8 min, stirring at 20 DEG C for 55 min, adding a mixture of 3.28 g of 2-methylimidazole and 80 mL of methanol, heating to 35 DEG C for 5.5 h, adding 1.2 g of the amino alcohol compound containing sulfur heterocycle, ultrasonic stirring for 1.5 h, filtering, washing and drying to obtain the composite nanometer silicon carbide;

[0068] The preparation of the self-repairing coating containing disulfide bond comprises the following steps:

[0069] (1) mixing 4.9 g of D-cystine, 4.9 g of chlorosulfuric acid and 25 mL of methanol, heating at 58 DEG C for 11 h, and rotary evaporation to obtain cystine dimethyl ester dihydrochloride; mixing 2.2 g of cystine dimethyl ester dihydrochloride, 100 mL of N,N-dimethylformamide and 0.13 mol of triethanolamine, continuing to stir for 11 h, and filtering under reduced pressure to obtain cystine dimethyl ester;

[0070] (2) mixing 4.44 g of isophorone diisocyanate, 10 g of polytetrahydrofuran and 25 mL of N,N-dimethylformamide under a nitrogen atmosphere, heating to 70 DEG C, adding 25 mg of dibutyltin dilaurate, and heating for 3.5 h to obtain prepolymer A;

[0071] (3) mixing 1.6 g of the amino alcohol compound containing sulfur heterocycle, 3.3 g of isophorone diisocyanate and 20 mL of N,N-dimethylformamide, heating to 70 DEG C, adding 25 mg of dibutyltin dilaurate, and heating for 3.5 h to obtain prepolymer B;

[0072] (4) 8.7 g of prepolymer A, 1.2 g of prepolymer B, 1 g of amino-terminated polydimethylsiloxane, 30 mL of N,N-dimethylformamide were mixed, and 2.1 g of cystine dimethyl ester, 500 mL of deionized water were added in an ice bath to 0°C, and incubated for 35 min to obtain a self-repairing coating containing a disulfide bond;

[0073] S5: The protective coating was coated on the surface of the pretreated substrate, and was cured to form a protective layer, thereby obtaining a modified steel wire.

[0074] Example 3: A high-strength friction-resistant fiber tow rope, comprising a composite fiber rope core and an outer layer of steel wire strands wrapped around the composite fiber rope core, the composite fiber rope core being composed of carbon fibers and basalt fibers twisted together; the number of outer layer steel wire strands is 8, and each steel wire strand is twisted from 21 modified steel wires;

[0075] The composite fiber rope core is twisted from 30 yarns, and the mass ratio of carbon fibers to basalt fibers is 2:1;

[0076] The preparation of the modified steel wire comprises the following steps:

[0077] S1: Steel wire as raw material, sequentially subjected to alkaline washing, acid washing, drawing treatment, drying to obtain a substrate;

[0078] The working conditions of the drawing treatment are: temperature of 150°C, drawing speed control of 2 m / s;

[0079] S2: A composite plating solution is prepared using composite nanosilicon carbide;

[0080] The composition of the composite plating solution is: deionized water as solvent, wherein nickel sulfate 32 g / L, sodium hypophosphite 18 g / L, sodium tungstate 8 g / L, sodium citrate 42 g / L, ammonium sulfate 28 g / L, composite nanosilicon carbide 3 g / L, sodium dodecyl sulfate 1 g / L;

[0081] S3: The substrate is placed in the composite plating solution for composite electroplating to obtain a pretreated substrate;

[0082] The working conditions of the composite electroplating are: electroplating time of 20 min, temperature of 50°C, current density of 2 A / dm 2 ;

[0083] S4: A protective coating is prepared using composite nanosilicon carbide, micron-sized silicon dioxide, and a self-repairing coating containing a disulfide bond;

[0084] The composition of the protective coating is: composite nanosilicon carbide 4 parts, micron-sized silicon dioxide 2 parts, and a self-repairing coating containing a disulfide bond 27 parts, by mass fraction;

[0085] The preparation of the amino alcohol compound containing sulfur heterocycle comprises the following steps: mixing 50 mL of 2-thiophenemethylamine and 39 mL of ethyleneglycol diglycidyl ether, stirring at 45℃ for 7h, purifying by silica gel column chromatography with the volume ratio of dichloromethane to methanol being 30:1, and drying to obtain the amino alcohol compound containing sulfur heterocycle;

[0086] The preparation of the composite nanometer silicon carbide comprises the following steps:

[0087] Mixing 2g of SiC nanowires and 80mL of methanol, adding 8mmol of zinc nitrate hexahydrate and 2mmol of cerium nitrate hexahydrate, and 80mL of methanol, ultrasonic stirring for 10min, stirring at 25℃ for 50min, adding 3.28g of 2-methylimidazole and 80mL of methanol, heating to 40℃ for 5h, adding 1.2g of the amino alcohol compound containing sulfur heterocycle, ultrasonic stirring for 2h, filtering, washing and drying to obtain the composite nanometer silicon carbide;

[0088] The preparation of the self-repairing coating containing disulfide bond comprises the following steps:

[0089] (1) Mixing 4.9g of D-cystine, 4.9g of chlorosulfoxide and 25mL of methanol, and heating at 60℃ for 10h, and rotary evaporation to obtain cystine dimethyl ester dihydrochloride; mixing 2.2g of cystine dimethyl ester dihydrochloride, 100mL of N,N-dimethylformamide and 0.13mol of triethanolamine, continuing to stir for 12h, and filtering under reduced pressure to obtain cystine dimethyl ester;

[0090] (2) Mixing 4.44g of isophorone diisocyanate, 10g of polytetrahydrofuran and 25mL of N,N-dimethylformamide under nitrogen atmosphere, heating to 72℃, adding 25mg of dibutyltin dilaurate, and heating for 4h to obtain prepolymer A;

[0091] (3) Mixing 1.6g of the amino alcohol compound containing sulfur heterocycle, 3.3g of isophorone diisocyanate and 20mL of N,N-dimethylformamide, heating to 72℃, adding 25mg of dibutyltin dilaurate, and heating for 4h to obtain prepolymer B;

[0092] (4) Mixing 8.7g of prepolymer A, 1.2g of prepolymer B, 1g of amino-terminated polydimethylsiloxane and 30mL of N,N-dimethylformamide, adding a mixture of 2.1g of cystine dimethyl ester and 500mL of deionized water in an ice bath to 0℃, and heating for 40min to obtain the self-repairing coating containing disulfide bond;

[0093] S5: coating the protective coating on the surface of the pretreated substrate, curing to form a protective layer, and obtaining the modified steel wire.

[0094] Comparative Example 1: As a control group of Example 3, no aminooalcohol compound containing sulfur heterocycle was prepared, and other procedures were normal.

[0095] Comparative Example 2: As a control group of Example 3, SiC nanowires were used to replace composite nanosilicon carbide, and other procedures were normal.

[0096] Comparative Example 3: As a control group of Example 3, no cystine dimethyl ester was prepared, and other procedures were normal.

[0097] In the examples and comparative examples, the diameter of the substrate was 1 mm, the thickness of the electroplated layer was 80 µm, and the thickness of the protective layer was 40 µm.

[0098] The sources of the raw materials used were as follows:

[0099] Steel wire (1860 grade steel wire, diameter 3 mm): 82B high-carbon steel after lead bath quenching and cold drawing; Carbon fiber SYT45S-24K: Zhongfushenying Carbon Fiber Co., Ltd.; Basalt fiber twisted yarn (single filament diameter 10 µm): Jiangsu Xuan Kun Basalt Fiber Technology Co., Ltd.; Amino-terminated polydimethylsiloxane 481696, 2-thiophenemethylamine 220884: Sigma-Aldrich (Shanghai) Trading Co., Ltd.; Nickel sulfate N100218, sodium hypophosphite S475696, sodium tungstate S305386, sodium citrate S189183, ammonium sulfate A112091, sodium dodecyl sulfate S432157, micron-sized silicon dioxide S433673, ethylene glycol diglycidyl ether G132841, SiC nanowires S196604, zinc nitrate hexahydrate Z111703, cerium nitrate hexahydrate C105376, 2-methylimidazole M104839, D-cystine C103190, chlorosulfoxide T293183, N,N-dimethylformamide D111999, triethanolamine T108151, isophorone diisocyanate I109582, polytetrahydrofuran P118599, dibutyltin dilaurate D100274: Aldrich Reagent; Dichloromethane, methanol, analytical pure: National Pharmaceutical Group Reagent.

[0100] Performance testing:

[0101] Hydrophobicity: characterized by water contact angle, test using 2 µL water droplet; abrasion resistance: reference ASTM No. G99-95 test, using a load of 15N, speed of 0.3 m / s, friction pair using ball-disc contact motion; self-repairing property: draw a cross-shaped scratch on the coating with a width of 5 µm and a length of 150 µm, incubate at 40°C for 2 h, and then measure the abrasion resistance again, using the wear change rate to characterize the performance; salt spray resistance: reference GB / T1771-2007, pH 7, temperature 36°C, sodium chloride concentration 60 g / L; the results obtained are shown in Table 1 below.

[0102] Table 1

[0103]

[0104] The application provides a high-strength friction-resistant fiber traction rope, which comprises a composite fiber rope core and an outer layer steel wire strand wrapped around the composite fiber rope core, the composite fiber rope core is composed of carbon fibers with light specific gravity, large specific rigidity, high specific modulus, good corrosion resistance, small expansion coefficient and stable mechanical properties, and basalt fibers with stable mechanical properties, good thermal stability and acid and alkali corrosion resistance, which are twisted and combined; composite electroplating treatment is performed on steel wires forming the outer layer steel wire strand, and then super-hydrophobic protective paint with self-repairing property is coated, so that high-strength modified steel wires with super-hydrophobic self-repairing surfaces are obtained, the friction resistance and corrosion resistance of the traction rope are greatly improved, so that the maintenance cost of the elevator structure is reduced and the maintenance cycle of the elevator is prolonged.

[0105] It can be known by comparing the example 3 with the comparative example 1 and the comparative example 2 that the nickel-based Ni-W-P alloy plating layer is electroplated on the surface of the steel wire by using the electrodeposition method, the nano silicon carbide is introduced during electroplating to improve the wear resistance, the zinc-cerium metal framework with 2-methyl imidazole as an organic ligand is in-situ grown on the silicon carbide nanowire to seal the nano holes on the plating layer, the zinc-cerium metal framework in-situ grown on the silicon carbide nanowire can be used as a nano container of the sulfur-containing heterocyclic amino alcohol compound corrosion inhibitor prepared from 2-thiophene methylamine and ethylene glycol diglycidyl ether, the composite nano silicon carbide is introduced in the composite electroplating solution, and the strength, wear resistance and corrosion resistance of the traction rope are improved.

[0106] It can be known by comparing the example 3 with the comparative example 1 and the comparative example 3 that the pre-polymer A is prepared from isophorone diisocyanate and polytetrahydrofuran, the pre-polymer B is prepared from the sulfur-containing heterocyclic amino alcohol compound with corrosion resistance and isophorone diisocyanate, the D-cystine is selected as a raw material, and the cystine dimethyl ester with a disulfide bond is synthesized from methanol, triethanolamine and the like as a chain extender, and the amino-terminated polydimethylsiloxane is used as a terminating agent to obtain the self-repairing paint with the disulfide bond, the self-repairing paint is used as a base material of the protective paint to give the traction rope with a self-repairing hydrophobic surface, the composite nano silicon carbide and micron silicon dioxide are introduced in the protective paint, the super-hydrophobic wear-resistant surface of the traction rope is given by controlling the introduction amount, the zinc-cerium metal framework in the composite nano silicon carbide can effectively improve the self-repairing rate and self-repairing property of the coating, and the complexity of mutual interlacing of the raw materials in the coating can effectively improve the solvent resistance of the coating, so that the performance of long-term wear resistance and corrosion resistance is effectively achieved.

[0107] In conclusion, the high-strength friction-resistant fiber traction rope is prepared in the application and has good application prospect.

[0108] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which is within the inventive concept of the present application, is included in the patent protection scope of the present application.

Claims

1. A high-strength friction-resistant fiber traction rope, characterized in that: The invention comprises a composite fiber rope core and an outer layer of steel wire strands wrapped around the composite fiber rope core, wherein the composite fiber rope core is composed of carbon fiber and basalt fiber compositely twisted; and the steel wire strands are twisted from multiple modified steel wires; The preparation of modified steel wire includes the following steps: S1: Using steel wire as raw material, sequentially performing alkali washing, pickling, drawing, and drying to obtain a substrate; S2: preparing a composite plating solution using composite nano-silicon carbide; S3: placing the substrate into a composite plating solution for composite electroplating to obtain a pretreated substrate; S4: Preparation of protective coatings using composite nano-silicon carbide, micro-silicon dioxide, and self-healing coatings containing disulfide bonds; S5: coating the protective coating on the surface of the pretreated substrate and curing the coating to form a protective layer to obtain a modified steel wire; The preparation of composite nano-silicon carbide includes the following steps: SiC nanowires and methanol are mixed, zinc nitrate hexahydrate, cerium nitrate hexahydrate, and methanol are added, ultrasonically stirred for 5-10 minutes, stirred at 18-25° C. for 50-60 minutes, added to a mixture of 2-methylimidazole and methanol, heated to 30-40° C. and kept warm for 5-6 hours, and a sulfur-containing heterocyclic amino alcohol compound is added, ultrasonically stirred for 1-2 hours, filtered, washed, and dried to obtain composite nano-silicon carbide; The preparation of the self-healing coating containing disulfide bonds comprises the following steps: (1) D-cystine, thionyl chloride, and methanol were mixed, kept warm at 55-60°C for 10-12 hours, and rotary evaporated to obtain cystine dimethyl ester dihydrochloride; cystine dimethyl ester dihydrochloride, N,N-dimethylformamide, and triethanolamine were mixed, stirred for 10-12 hours, and filtered under reduced pressure to obtain cystine dimethyl ester; (2) Under nitrogen atmosphere, isophorone diisocyanate, polytetrahydrofuran, and N,N-dimethylformamide were mixed, heated to 68-72°C, and dibutyltin dilaurate was added. The mixture was kept warm for 3-4 hours to obtain prepolymer A. (3) Under nitrogen atmosphere, a sulfur-containing heterocyclic amino alcohol compound, isophorone diisocyanate, and N,N-dimethylformamide were mixed, the temperature was raised to 68-72°C, dibutyltin dilaurate was added, and the mixture was kept warm for 3-4 hours to obtain prepolymer B; (4) Prepolymer A, prepolymer B, amino-terminated polydimethylsiloxane, and N,N-dimethylformamide were mixed, and a mixture of cystine dimethyl ester and deionized water was added in an ice bath to 0°C, and the mixture was kept warm for 30-40 minutes to obtain a self-healing coating containing disulfide bonds; The preparation of the sulfur-containing heterocyclic amino alcohol compound comprises the following steps: mixing 2-thienylmethylamine and ethylene glycol diglycidyl ether, heating to 40-45° C. and stirring for 7-8 hours, purifying by silica gel column chromatography, and drying to obtain the sulfur-containing heterocyclic amino alcohol compound.

2. A high-strength friction-resistant fiber traction rope according to claim 1, characterized in that: The composite fiber rope core is twisted from 30 to 40 yarns, wherein the mass ratio of carbon fiber to basalt fiber is 2:

1.

3. The high-strength friction-resistant fiber traction rope according to claim 1, characterized in that: The composition of the composite plating solution is: deionized water as solvent, including 32g / L nickel sulfate, 18g / L sodium hypophosphite, 8g / L sodium tungstate, 42g / L sodium citrate, 28g / L ammonium sulfate, 3g / L composite nano-silicon carbide, and 1g / L sodium dodecyl sulfate.

4. The high-strength friction-resistant fiber traction rope according to claim 1, characterized in that: The working conditions of composite electroplating are: electroplating time 15-20min, temperature 50-55℃, current density 2A / dm 2 .

5. The high-strength friction-resistant fiber traction rope according to claim 1, characterized in that: The working conditions of the drawing process are: temperature of 140°C-150°C, and drawing speed controlled at 2-3m / s.

6. The high-strength friction-resistant fiber traction rope according to claim 1, characterized in that: The protective coating is composed of 2-4 parts by mass of composite nano-silicon carbide, 1-2 parts of micron silicon dioxide, and 25-27 parts of self-repairing coating containing disulfide bonds.

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