CN110846913A - Steel wire rope for hoisting polymer rope core - Google Patents
Steel wire rope for hoisting polymer rope core Download PDFInfo
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- CN110846913A CN110846913A CN201911170277.8A CN201911170277A CN110846913A CN 110846913 A CN110846913 A CN 110846913A CN 201911170277 A CN201911170277 A CN 201911170277A CN 110846913 A CN110846913 A CN 110846913A
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- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/005—Composite ropes, i.e. ropes built-up from fibrous or filamentary material and metal wires
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
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- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
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- D07B1/00—Constructional features of ropes or cables
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- D07B1/141—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases
- D07B1/144—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases for cables or cable components built-up from metal wires
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- D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
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- C10M2201/105—Silica
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
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- C10M2205/026—Butene
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
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- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
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- D07B2201/10—Rope or cable structures
- D07B2201/1012—Rope or cable structures characterised by their internal structure
- D07B2201/102—Rope or cable structures characterised by their internal structure including a core
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- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
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- D07B2201/2009—Wires or filaments characterised by the materials used
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- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
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- D07B2201/2057—Cores characterised by their structure comprising filaments or fibers resulting in a twisted structure
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Abstract
The invention discloses a steel wire rope for hoisting a polymer rope core, which comprises a polymer rope core, a middle steel wire rope strand and an outer steel wire rope strand, wherein the middle steel wire rope strand is coated on the outer side of the polymer rope core, a nylon layer is coated on the outer side of the middle steel wire rope strand, the outer steel wire rope strand is coated on the outer side of the nylon layer, at least six steel wire rope strands are arranged in the middle steel wire rope strand, at least ten steel wire rope strands are arranged in the outer steel wire rope strand, all the steel wire rope strands are twisted in parallel, self-repairing waterproof lubricating grease is arranged between the middle steel wire rope strands and the outer steel wire rope strands, and an outer sleeve layer. The invention has good elasticity, aging resistance, acid and alkali resistance, fatigue resistance, excellent mechanical property and chemical property, can obviously reduce the friction coefficient, has self-repairing property and waterproof property, ensures that the inside of the steel wire rope can have enough grease lubrication for a long time, and can effectively slow down the corrosion and abrasion of the steel wire rope.
Description
Technical Field
The invention belongs to the technical field of steel wire ropes, and particularly relates to a steel wire rope for hoisting a polymer rope core.
Background
The hoisting machine refers to a multi-action machine that vertically lifts and horizontally carries heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes.
The steel wire rope is a spiral steel wire bundle which is formed by twisting steel wires with mechanical properties and geometric dimensions meeting requirements according to a certain rule, and can play roles in lifting, traction, tensioning, bearing and the like. If the steel wire rope is in severe environments such as high humidity, high wind speed, acid and alkali erosion and the like for a long time, the electric corrosion of the metal surface of the steel wire rope can be caused by a large amount of corrosive harmful ions contained in the water drenching and coal bed of a mine, a plurality of corrosion round pits are formed on the surface and gradually deepen to become root sources of stress concentration points and fatigue cracks, meanwhile, the cross section area of the steel wire rope is reduced due to the corrosion, and the bearing capacity of the whole steel wire rope is reduced. The steel wire rope is mainly used on hoisting machinery, and the existing steel wire rope for the hoisting machinery is not treated with any anti-corrosion performance, so that the steel wire rope has the defects of low tensile strength, easy corrosion and rusting and short service life.
Therefore, a high polymer rope core hoisting steel wire rope is provided.
Disclosure of Invention
The invention aims to provide a steel wire rope for hoisting a polymer rope core, which has good elasticity, aging resistance, acid and alkali resistance, fatigue resistance, excellent mechanical property and chemical property, can obviously reduce friction coefficient, has self-repairing property and waterproof property, ensures that the inside of the steel wire rope can have enough grease lubrication for a long time, and can effectively slow down corrosion and abrasion of the steel wire rope so as to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a steel wire rope for hoisting a polymer rope core comprises a polymer rope core, intermediate steel wire rope strands and outer steel wire rope strands, wherein the intermediate steel wire rope strands are wrapped on the outer side of the polymer rope core, a nylon layer is wrapped on the outer side of the intermediate steel wire rope strands, the outer steel wire rope strands are wrapped on the outer side of the nylon layer, at least six steel wire rope strands are arranged on the intermediate steel wire rope strands, at least ten steel wire rope strands are arranged on the outer steel wire rope strands, the at least ten steel wire rope strands are twisted in parallel, self-repairing waterproof lubricating grease is arranged between each of the intermediate steel wire rope strands and each of the outer steel wire rope strands, and an;
the high polymer rope core is formed by twisting at least three strands of strands made of high molecular weight polyethylene fibers and nano composite metal oxide-polyether amine composite fibers.
Preferably, the thickness of the nylon layer is 1.5-3 mm, and the thickness of the outer sleeve layer is 2-5 mm.
Preferably, the outer sleeve layer is made of a rubber material.
Preferably, the self-repairing waterproof lubricating grease has the following formula in parts by mass:
20-30 parts of base oil, 5-15 parts of nano particles, 0.5-1.5 parts of organic long-chain organic tri-substituted amine, 2-6 parts of fatty acid, 0.1-0.3 part of antioxidant and 0.1-0.3 part of thickener.
Preferably, the base oil is any one of paraffin base oil and naphthenic base oil, and the kinematic viscosity of the base oil at 40 ℃ is 80-300 mm2/s；
The nano particles are any one or a composition of two groups of silicon dioxide, titanium dioxide, graphite, graphene and carbon nano tubes;
the organic tri-substituted amine with the long organic chain comprises diethylene glycol octadecylamine, diethylene glycol dodecylamine or diethylene glycol octylamine, and the molecular weight is 2000-4000;
the fatty acid is one or two of hydroxystearic acid and stearic acid;
the antioxidant is diphenylamine or N-phenyl- α -naphthylamine;
the tackifier is one or two of polyisobutylene and ethylene-propylene copolymer.
Preferably, the self-repairing waterproof lubricating grease is prepared by the following steps:
adding the nanoparticles into 3-trisilanol propanesulfonic acid to carry out sulfonation on the surfaces of the nanoparticles;
adding organic tri-substituted amine with an organic long chain into the sulfonated nano-particles, quickly stirring and uniformly mixing;
adding base oil and fatty acid, stirring and heating to 70-90 ℃, and dissolving completely;
and adding an antioxidant and a thickening agent, quickly stirring, uniformly mixing, and cooling to room temperature to prepare the self-repairing waterproof lubricating grease.
Preferably, the preparation steps of the nano composite metal oxide-polyether amine composite fiber are as follows:
preparing metal hydroxide by a coprecipitation method, and calcining at 500-600 ℃ to obtain a corresponding nano composite metal oxide;
and (3) carrying out surface modification on the nano composite metal oxide by using a coupling agent, then mixing with polyether amine for granulation, and carrying out melt spinning to prepare the nano composite metal oxide-polyether amine composite fiber.
Preferably, the nano composite metal oxide is any one of magnesium aluminum oxide, zinc aluminum oxide and zinc magnesium aluminum oxide.
Compared with the prior art, the polymer rope core hoisting steel wire rope provided by the invention has the following advantages:
the high polymer rope core of the steel wire rope is formed by twisting rope strands made of high molecular weight polyethylene fibers and nanometer composite metal oxide-polyether amine composite fibers, and the high polymer rope core is wrapped by two layers of steel wire rope strands, so that the steel wire rope has good elasticity, ageing resistance, acid and alkali resistance, fatigue resistance, excellent mechanical property and chemical property, and is beneficial to improving the mechanical property, the chemical property, the elasticity and the crack resistance of the steel wire rope, a layer of nylon rope is arranged between the outer layer of steel wire rope strands and the middle layer of steel wire rope strands, the toughness of the steel wire rope is greatly improved due to the high toughness and the difficult tearing property of the nylon rope, self-repairing waterproof lubricating grease arranged between the middle layer of steel wire rope strands and the outer layer of steel wire rope can obviously reduce the friction coefficient, and has self-repairing property and waterproof property, and the steel wire rope can be ensured, and can effectively slow down the corrosion and the abrasion of the steel wire rope.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic flow chart of the preparation steps of the self-repairing waterproof lubricating grease of the invention;
FIG. 3 is a schematic flow chart of the steps for preparing the nanocomposite metal oxide-polyetheramine composite fibers of the present invention.
In the figure: 1. a polymer rope core; 2. an intermediate wire strand; 3. an outer layer wire strand; 4. a nylon layer; 5. and an overcoat layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a steel wire rope for hoisting a polymer rope core as shown in figure 1, which comprises a polymer rope core 1, a middle steel wire rope strand 2 and an outer steel wire rope strand 3, wherein the middle steel wire rope strand 2 is coated on the outer side of the polymer rope core 1, a nylon layer 4 is coated on the outer side of the middle steel wire rope strand 2, the thickness of the nylon layer 4 is 1.5-3 mm, the outer steel wire rope strand 3 is coated on the outer side of the nylon layer 4, the middle steel wire rope strand 2 is provided with at least six strands, the outer steel wire rope strand 3 is provided with at least ten strands which are all twisted in parallel, self-repairing waterproof lubricating grease is arranged between the plurality of middle steel wire rope strands 2 and the plurality of outer steel wire rope strands 3, an outer sleeve layer 5 is coated on the outer side of the outer steel wire rope strand 3, the thickness of the outer;
the self-repairing waterproof lubricating grease comprises the following components in parts by mass: 20 parts of base oil, 5 parts of nano particles, 0.5 part of organic long-chain organic tri-substituted amine, 2 parts of fatty acid, 0.1 part of antioxidant and 0.1 part of thickening agent.
The base oil is one of paraffin base oil and naphthenic base oil, and has kinematic viscosity of 80mm at 40 deg.C2The nano particles are any one or two groups of compositions of silicon dioxide, titanium dioxide, graphite, graphene and carbon nano tubes, the organic long-chain organic tri-substituted amine comprises diethylene glycol octadecylamine, diethylene glycol dodecylamine or diethylene glycol octylamine, the molecular weight is 2000, the fatty acid is any one or two groups of compositions of hydroxystearic acid and stearic acid, the antioxidant is diphenylamine or N-phenyl- α -naphthylamine, and the tackifier is any one or two groups of compositions of polyisobutylene and ethylene propylene copolymers.
As shown in fig. 2, the self-repairing waterproof lubricating grease is prepared by the following steps:
adding the nanoparticles into 3-trisilanol propanesulfonic acid to carry out sulfonation on the surfaces of the nanoparticles;
adding organic tri-substituted amine with an organic long chain into the sulfonated nano-particles, quickly stirring and uniformly mixing;
adding base oil and fatty acid, stirring and heating to 70-90 ℃, and dissolving completely;
and adding an antioxidant and a thickening agent, quickly stirring, uniformly mixing, and cooling to room temperature to prepare the self-repairing waterproof lubricating grease.
The polymer rope core 1 is formed by twisting at least three strands of strands made of high molecular weight polyethylene fibers and nanocomposite metal oxide-polyether amine composite fibers.
As shown in fig. 3, the preparation steps of the nanocomposite metal oxide-polyetheramine composite fiber are as follows:
preparing metal hydroxide by a coprecipitation method, and calcining at 500-600 ℃ to obtain a corresponding nano composite metal oxide;
and (3) carrying out surface modification on the nano composite metal oxide by using a coupling agent, then mixing with polyether amine for granulation, and carrying out melt spinning to prepare the nano composite metal oxide-polyether amine composite fiber.
The nano composite metal oxide is any one of magnesium aluminum oxide, zinc aluminum oxide and zinc magnesium aluminum oxide.
Example 2
The self-repairing waterproof lubricating grease is different from the self-repairing waterproof lubricating grease in example 1 in that the self-repairing waterproof lubricating grease comprises the following components in parts by mass: 25 parts of base oil, 10 parts of nano particles, 1.0 part of organic long-chain organic tri-substituted amine, 4 parts of fatty acid, 0.2 part of antioxidant and 0.2 part of thickening agent.
The base oil is one of paraffin base oil and naphthenic base oil, and has kinematic viscosity of 200mm at 40 deg.C2The nano particles are any one or two groups of compositions of silicon dioxide, titanium dioxide, graphite, graphene and carbon nano tubes, the organic long-chain organic tri-substituted amine comprises diethylene glycol octadecylamine, diethylene glycol dodecylamine or diethylene glycol octylamine, the molecular weight is 3000, the fatty acid is any one or two groups of compositions of hydroxystearic acid and stearic acid, the antioxidant is diphenylamine or N-phenyl- α -naphthylamine, and the tackifier is any one or two groups of compositions of polyisobutylene and ethylene propylene copolymer
Example 3
The self-repairing waterproof lubricating grease is different from the self-repairing waterproof lubricating grease in the following formula in mass components: 30 parts of base oil, 15 parts of nano particles, 1.5 parts of organic long-chain organic tri-substituted amine, 6 parts of fatty acid, 0.3 part of antioxidant and 0.3 part of thickening agent.
The base oil is one of paraffin base oil and naphthenic base oil, and has kinematic viscosity of 300mm at 40 deg.C2S; the nano particles are any one or a combination of two groups of silicon dioxide, titanium dioxide, graphite, graphene and carbon nano tubes; the organic long-chain organic trisubstituted amine comprises diglycol octadecylamine and diglycolDodecylamine or diglycol octylamine with molecular weight of 4000, fatty acid selected from hydroxystearic acid and stearic acid, antioxidant selected from diphenylamine or N-phenyl- α -naphthylamine, tackifier selected from polyisobutylene and ethylene-propylene copolymer
In summary, the following steps: the high polymer rope core 1 of the steel wire rope is formed by twisting rope strands made of high molecular weight polyethylene fibers and nano composite metal oxide-polyether amine composite fibers, and is wrapped by two layers of steel wire rope strands, so that the steel wire rope has good elasticity, aging resistance, acid and alkali resistance, fatigue resistance, excellent mechanical property and chemical property, and is favorable for improving the mechanical property, the chemical property, the elasticity and the crack resistance of the steel wire rope, a layer of nylon rope 4 is arranged between an outer layer of steel wire rope strand 3 and a middle layer of steel wire rope strand 2, the toughness of the steel wire rope is greatly improved due to the high toughness and the difficult tearing property of the nylon rope 4, self-repairing waterproof lubricating grease arranged between the middle layer of steel wire rope strand 2 and the outer layer of steel wire rope 3 can obviously reduce the friction coefficient, has self-repairing property and waterproofness, and ensures that the interior of the steel wire rope can have, and can effectively slow down the corrosion and the abrasion of the steel wire rope
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a polymer rope core wire rope for jack-up which characterized in that: the rope comprises a polymer rope core (1), middle steel wire rope strands (2) and outer steel wire rope strands (3), wherein the middle steel wire rope strands (2) are coated on the outer side of the polymer rope core (1), a nylon layer (4) is coated on the outer side of the middle steel wire rope strands (2), the outer steel wire rope strands (3) are coated on the outer side of the nylon layer (4), at least six middle steel wire rope strands (2) are arranged, at least ten outer steel wire rope strands (3) are arranged and are twisted in parallel, waterproof lubricating grease is arranged between the middle steel wire rope strands (2) and the outer steel wire rope strands (3), and an outer sleeve layer (5) is coated on the outer side of the outer steel wire rope strands (3);
the high polymer rope core (1) is formed by twisting at least three strands of high molecular weight polyethylene fibers and strands made of nano composite metal oxide-polyether amine composite fibers.
2. The steel cord for hoisting a polymer rope core according to claim 1, wherein the nylon layer (4) has a thickness of 1.5 to 3 mm, and the jacket layer (5) has a thickness of 2 to 5 mm.
3. A polymer core hoisting steel cord according to claim 1, wherein the outer jacket layer (5) is made of rubber material.
4. The steel wire rope for hoisting the polymer rope core according to claim 1, wherein the self-repairing waterproof lubricating grease is prepared from the following components in parts by mass:
20-30 parts of base oil, 5-15 parts of nano particles, 0.5-1.5 parts of organic long-chain organic tri-substituted amine, 2-6 parts of fatty acid, 0.1-0.3 part of antioxidant and 0.1-0.3 part of thickener.
5. The steel wire rope for hoisting polymer rope core according to claim 4, wherein the base oil is one of paraffin base oil and naphthenic base oil, and the kinematic viscosity at 40 ℃ is 80-300 mm2/s；
The nano particles are any one or a composition of two groups of silicon dioxide, titanium dioxide, graphite, graphene and carbon nano tubes;
the organic tri-substituted amine with the long organic chain comprises diethylene glycol octadecylamine, diethylene glycol dodecylamine or diethylene glycol octylamine, and the molecular weight is 2000-4000;
the fatty acid is one or two of hydroxystearic acid and stearic acid;
the antioxidant is diphenylamine or N-phenyl- α -naphthylamine;
the tackifier is one or two of polyisobutylene and ethylene-propylene copolymer.
6. The steel wire rope for hoisting the polymer rope core according to claim 4, wherein the self-repairing waterproof lubricating grease is prepared by the following steps:
adding the nanoparticles into 3-trisilanol propanesulfonic acid to carry out sulfonation on the surfaces of the nanoparticles;
adding organic tri-substituted amine with an organic long chain into the sulfonated nano-particles, quickly stirring and uniformly mixing;
adding base oil and fatty acid, stirring and heating to 70-90 ℃, and dissolving completely;
and adding an antioxidant and a thickening agent, quickly stirring, uniformly mixing, and cooling to room temperature to prepare the self-repairing waterproof lubricating grease.
7. The steel wire rope for hoisting the polymer rope core according to claim 1, wherein the preparation steps of the nanocomposite metal oxide-polyetheramine composite fiber are as follows:
preparing metal hydroxide by a coprecipitation method, and calcining at 500-600 ℃ to obtain a corresponding nano composite metal oxide;
and (3) carrying out surface modification on the nano composite metal oxide by using a coupling agent, then mixing with polyether amine for granulation, and carrying out melt spinning to prepare the nano composite metal oxide-polyether amine composite fiber.
8. The steel cord for hoisting high molecular weight polymer according to claim 7, wherein the nanocomposite metal oxide is any one of magnesium aluminum oxide, zinc aluminum oxide, and zinc magnesium aluminum oxide.
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| WO2022079835A1 (en) * | 2020-10-14 | 2022-04-21 | 三菱電機株式会社 | Elevator rope |
| CN115198548A (en) * | 2022-07-25 | 2022-10-18 | 江苏赛福天新材料科技有限公司 | High-strength compression-resistant composite rope core and preparation method thereof |
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