CN114960241B - High-temperature-resistant anti-aging steel wire rope - Google Patents
High-temperature-resistant anti-aging steel wire rope Download PDFInfo
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- CN114960241B CN114960241B CN202210472145.6A CN202210472145A CN114960241B CN 114960241 B CN114960241 B CN 114960241B CN 202210472145 A CN202210472145 A CN 202210472145A CN 114960241 B CN114960241 B CN 114960241B
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
- D07B1/167—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay having a predetermined shape
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2046—Polyamides, e.g. nylons
- D07B2205/205—Aramides
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/202—Environmental resistance
- D07B2401/2035—High temperature resistance
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Abstract
The invention provides a high-temperature-resistant anti-aging steel wire rope, which comprises a combined rope core and an outer layer strand, wherein the outer layer strand is spirally wrapped and twisted on the combined rope core, a water blocking layer is arranged outside the outer layer strand, a phase-change layer is arranged outside the water blocking layer, a carbon fiber layer is arranged outside the phase-change layer, and an anti-aging rubber protection layer is arranged outside the carbon fiber layer. According to the invention, the phase change layer and the ageing-resistant rubber protective layer are arranged on the steel wire rope, so that the adaptability of the steel wire rope to severe environments such as high temperature conditions and strong ultraviolet rays is improved, the steel wire rope is prevented from softening and deforming in the high temperature environments, the mechanical properties of the steel wire rope are greatly reduced, and potential safety hazards are brought.
Description
Technical Field
The invention relates to the technical field of steel wire ropes, in particular to a high-temperature-resistant anti-aging steel wire rope.
Background
The steel wire rope is a spiral steel wire bundle formed by twisting steel wires with mechanical properties and geometric dimensions meeting the requirements together according to a certain rule, and consists of the steel wires, a rope core and lubricating grease. The steel wire rope has high strength, light dead weight, stable work, difficult sudden whole root breakage, reliable work and wide application in daily life. Because of the unique properties of steel wire ropes, steel wire ropes have been indispensable materials or components in the fields of metallurgy, mining, oil and gas drilling, machinery, chemical industry, aerospace and the like so far, and therefore, the quality of steel wire ropes is also being focused on by a plurality of industries.
At present, as the use of the steel wire rope is more and more diversified, the requirements on the characteristics of the steel wire rope in all aspects are higher and higher. Aiming at specific working occasions, the used steel wire ropes have different requirements, the application environment of the steel wire ropes is very wide, and the use environment temperature of the special steel wire ropes is higher, such as industrial production environment, desert and other parts of ultra-high temperature areas. This requires good high temperature resistance of the wire rope, preventing breakage of the wire rope. In particular, the use of steel wire ropes under high temperature environmental conditions has mainly the following problems: the surface of the steel wire rope is affected by high temperature and is easy to deform, so that the steel wire rope is broken. However, the temperature rise also has an ageing effect on the outer protective layer of the steel wire rope, the ageing effect of the outer protective layer of the steel wire rope is more serious by matching with ultraviolet rays, the abrasion resistance of the steel wire rope is reduced, and the inner structure is exposed along with the ageing of the outer protective layer and is easy to be corroded to break. Therefore, the steel wire rope with good applicability to high-temperature environment can be designed, and the service life and the application range of the steel wire rope can be effectively prolonged.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant anti-aging steel wire rope and a preparation method thereof, and the steel wire rope is optimized for severe environments with high temperature and strong ultraviolet rays, so that the steel wire rope can be more suitable for the environments, the aging time of the steel wire rope is prolonged, and the service life of the steel wire rope is prolonged.
The invention provides a high-temperature-resistant and anti-aging steel wire rope, which comprises a combined rope core and an outer layer strand, wherein the outer layer strand is spirally wrapped and twisted on the combined rope core, a water-blocking layer is arranged outside the outer layer strand, a phase-change layer is arranged outside the water-blocking layer, a carbon fiber layer is arranged outside the phase-change layer, and an anti-aging rubber protection layer is arranged outside the carbon fiber layer. The phase change layer comprises a plurality of reinforcing ribs and a plurality of solid phase change heat storage strips, and the solid phase change heat storage strips comprise the following components in percentage by mass: 20-30% of high-density polyethylene, 15-20% of linear low-density polyethylene, 30-35% of paraffin, 3-5% of diatomite, 10-15% of styrene-butadiene-styrene block copolymer, 1-3% of coupling agent and 2-4% of alumina.
Preferably, the aging-resistant rubber protective layer comprises the following components in percentage by mass: 10-15% of ethylene-acrylic rubber, 30-35% of acrylic rubber, 28-32% of butadiene rubber, 10-15% of natural rubber, 0.5-1% of vulcanizing agent, 1-3% of accelerator, 2-4% of anti-aging agent, 3-8% of modified nano hydrotalcite, 4-9% of carbon black and 1-5% of stearic acid.
Further preferably, the preparation method of the modified nano hydrotalcite comprises the following steps: hydrotalcite is modified by adopting a mode of substituting hydrotalcite interlayer anions with an ultraviolet absorbent, wherein the ultraviolet absorbent is 2, 3-dihydroxynaphthalene-6-sodium sulfonate DNSA, and the hydrotalcite is magnesium aluminum hydrotalcite MgAl-NO 3 LDHs prepared by inserting 2, 3-dihydroxynaphthalene-6-sodium sulfonate anion into hydrotalcite MgAl-NO 3 The modified nano hydrotalcite MgAl-DNSA-LDHs is prepared between the LDHs layers.
Further preferably, the vulcanizing agent is hexamethylenediamine carbamate and the accelerator is Vulcofac ACT 55.
Further preferably, the anti-aging agent is N-isopropyl-N' -phenyl-p-phenylenediamine.
Preferably, the combined rope core comprises a steel wire and a plurality of aramid fiber filaments, and the aramid fiber filaments are spirally wrapped around the steel wire.
Preferably, the outer layer strand consists of a plurality of manganese-based phosphatized coated steel wires.
Preferably, the water-resistant layer is formed by twisting 3-6 layers of water-resistant yarns.
The invention also provides a preparation method of the high-temperature-resistant anti-aging steel wire rope, which comprises the following preparation steps:
step 1, preparing a solid phase change heat storage strip: preparing raw materials according to the formula amount, heating paraffin to melt into liquid paraffin for standby, adding high-density polyethylene, linear low-density polyethylene, diatomite, styrene-butadiene-styrene block copolymer and alumina into an internal mixer, and heating to 130-140 ℃ for melt blending for 10min; adding liquid paraffin into an internal mixer, and continuously blending for 5min; adding coupling agent, blending for 15-20 min, injecting by an extruder, and cooling to obtain the solid phase change heat storage strip in a fixed mode.
Step 2, preparation of an aging-resistant rubber protective layer material:
(1) Raw rubber plasticating and premixing: natural rubber and butadiene rubber are weighed according to a proportion, the natural rubber is plasticated by an open rubber mixer, the plasticating temperature is 70-75 ℃, the natural rubber is thinned and formed into sheets after the roll gap is regulated to be minimum, the roll gap is regulated to the size of a conventional sheet after thinning and passing 8 times, and the premixed raw rubber is obtained by adding the butadiene rubber, triangulating for 10 times, discharging and cooling.
(2) And (3) mixing: adding the formula amount of ethylene-acrylic rubber and acrylic rubber into an internal mixer, banburying at 40 ℃ for 5min, adding an anti-aging agent, stearic acid, banburying at 85 ℃ for 5min, continuously adding premixed raw rubber at the constant temperature, modifying nano hydrotalcite and carbon black, and mixing for 20min to obtain the first-stage rubber compound.
(3) And (3) cooling: the length of rubber compound was removed and cooled to room temperature.
(4) Two-stage mixing: and (3) adding the cooled first-stage rubber compound into an internal mixer again, adding an accelerator and a vulcanizing agent, controlling the rotation speed of a rotor of the internal mixer to be 20 revolutions per minute, stirring for 5 minutes, and discharging the second-stage rubber compound, wherein the rubber discharging temperature is 80 ℃.
(5) Open mill: and (3) putting the two-stage rubber compound into an open mill, carrying out thin pass and 6 times of triangular bag opening, and discharging the sheet to obtain the prepared rubber.
Step 3, preparing a rope core: twisting aramid fiber filaments to form aramid fiber filament yarns, and twisting a plurality of aramid fiber filament yarns to form aramid fiber filaments with a preset diameter; and (3) taking one steel wire as a core, helically wrapping a plurality of aramid fiber wires around the steel wire, and carrying out oil spraying treatment at a folding port to obtain the rope core.
Step 4, rope combination: taking a plurality of manganese series phosphating coating steel wires with preset diameters as outer strands, helically wrapping and twisting the rope cores, arranging the rope cores through a wire distributing disc, compacting the rope cores through a pre-deformer device and a folding port, eliminating strand stress through a deformer, and pre-stretching to reduce the use elongation of the steel wire rope to obtain the semi-finished steel wire rope.
Step 5, preparing the outer layer of the rope strand: twisting 3-6 layers of water-blocking yarns outside the semi-finished steel wire rope and compacting to obtain a water-blocking layer; a plurality of reinforcing ribs are arranged outside the water-resistant layer at intervals of a preset distance, and solid phase change heat storage strips are placed between the reinforcing ribs to obtain a phase change layer; weaving carbon fiber filaments into carbon fiber cloth with a certain thickness, and fixing the carbon fiber cloth outside the phase-change layer in a hot-pressing mode to enable the carbon fiber cloth to be tightly connected with the reinforcing ribs, so that a carbon fiber layer is obtained; and coating the preparation glue outside the carbon fiber layer, pressurizing and shaping, and cooling to obtain the finished product of the steel wire rope.
The invention has the following beneficial effects: according to the invention, the phase change layer and the ageing-resistant rubber protective layer are arranged on the steel wire rope, so that the adaptability of the steel wire rope to severe environments such as high temperature conditions and strong ultraviolet rays is improved, the steel wire rope is prevented from softening and deforming easily under the high temperature environments, the mechanical properties of the steel wire rope are greatly reduced, and potential safety hazards are brought. The phase change layer is internally provided with a plurality of solid phase change heat storage strips, the essence of phase change heat storage is to control the energy absorption and release by means of the phase change latent heat in the phase change process, so that the purposes of heat energy storage and temperature regulation are realized, and the solid phase change mainly depends on solid-solid phase change to realize heat storage. The solid-solid phase change heat storage has the advantages of small phase change volume change, no phase separation, long service life, no leakage, small corrosiveness and the like, polyethylene is used as a main supporting material, so that the heat storage strip has certain strength to be matched with a steel wire rope, and meanwhile, along with the temperature change, the heat storage strip can store or release heat energy, and the influence of the temperature change on the steel wire rope is reduced. The anti-aging rubber protective layer is further arranged on the outermost layer of the steel wire rope, so that the protection effect on the inner structure of the steel wire rope is achieved, and the inner steel wire is effectively protected from corrosion. The service life of the steel wire rope is prolonged. The invention also provides a preparation method of the high-temperature-resistant anti-aging steel wire rope, which is simple to operate, is suitable for large-scale industrial production and is beneficial to industrialization.
Drawings
FIG. 1 is a schematic diagram of a high temperature and aging resistant steel wire rope according to the present invention
In the figure: 1-combining rope cores; 2-outer layer strands; 3-a water blocking layer; 4-a phase change layer; a 5-carbon fiber layer; 6-an aging-resistant rubber protective layer; 201-aramid fiber filament yarn; 401-reinforcing ribs; 401-solid phase change heat storage strip.
Detailed Description
The embodiments described below are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a high-temperature-resistant anti-aging steel wire rope, which comprises a combined rope core and an outer layer strand, wherein the outer layer strand is spirally wrapped and twisted on the combined rope core, a water blocking layer is arranged outside the outer layer strand, a phase-change layer is arranged outside the water blocking layer, a carbon fiber layer is arranged outside the phase-change layer, and an anti-aging rubber protection layer is arranged outside the carbon fiber layer. The phase change layer comprises a plurality of reinforcing ribs and a plurality of solid phase change heat storage strips, and the solid phase change heat storage strips comprise the following components in percentage by mass: 20-30% of high-density polyethylene, 15-20% of linear low-density polyethylene, 30-35% of paraffin, 3-5% of diatomite, 10-15% of styrene-butadiene-styrene block copolymer, 1-3% of coupling agent and 2-4% of alumina.
Paraffin is the most commonly used phase-change energy storage material and has the characteristics of high phase-change latent heat, good chemical stability, no phase separation, no corrosion, low price and the like. The high-density polyethylene has the latent heat of phase change of 178.6KJ/kg, good heat conduction performance and excellent mechanical property, can be used as a supporting material to prepare a composite phase change material, has good flexibility, and can improve the bending property of the high-density polyethylene material. The styrene-butadiene-styrene block copolymer (SBS) has extremely strong oil absorption capability and good encapsulation property, the polybutadiene block is similar to paraffin in structure, and the polyethylene and the SBS are used as supporting materials and encapsulation materials to have extremely high coating capability on the paraffin.
Further, the aging-resistant rubber protective layer comprises the following components in percentage by mass: 10-15% of ethylene-acrylic rubber, 30-35% of acrylic rubber, 28-32% of butadiene rubber, 10-15% of natural rubber, 0.5-1% of vulcanizing agent, 1-3% of accelerator, 2-4% of anti-aging agent, 3-8% of modified nano hydrotalcite, 4-9% of carbon black and 1-5% of stearic acid. In order to protect the stability of the inner core and strand structure of the wire rope and the inner wire from corrosion, the outer part of the wire rope is usually provided with a protective layer, usually a rubber protective layer. The rubber protective layer not only can stabilize the inner structure of the steel wire rope and protect the inner steel wire from corrosion, but also can strengthen the overall wear resistance of the steel wire rope and has an important protective effect on the steel wire rope. However, oxygen, ozone, illumination and the like in daily environment can have a certain influence on rubber aging, particularly ultraviolet rays with higher energy can cause breakage and crosslinking of rubber molecular chains, and long-time illumination can cause reticular cracks of the rubber layer to cause failure of a rubber protective layer. The invention optimizes the components of the rubber protective layer, and the acrylate rubber is a special rubber with excellent heat resistance, ozone resistance, weather aging resistance, oil resistance and the like, but the vulcanized rubber has the defects of low mechanical strength, large compression set, poor processability and the like, and the main chain structure of the ethylene acrylate rubber is similar to that of the acrylate rubber, and has the advantages of good balance in tensile property, oil resistance and the like due to the soft segment, and the two can be fused after blending. The combination of butadiene rubber and natural rubber is added properly, and the combination of the butadiene rubber and the natural rubber can improve the abrasion loss of the rubber and enhance the abrasion resistance effect.
The preparation method of the modified nano hydrotalcite comprises the following steps: hydrotalcite is modified by adopting a mode of substituting hydrotalcite interlayer anions with an ultraviolet absorbent, wherein the ultraviolet absorbent is 2, 3-dihydroxynaphthalene-6-sodium sulfonate DNSA, and the hydrotalcite is magnesium aluminum hydrotalcite MgAl-NO 3 LDHs prepared by inserting 2, 3-dihydroxynaphthalene-6-sodium sulfonate anion into hydrotalcite MgAl-NO 3 The modified nano hydrotalcite MgAl-DNSA-LDHs is prepared between the LDHs layers. Hydrotalcite is also called as anionic clay, and proper addition of hydrotalcite is favorable for improving the wear resistance of rubber, and because nano-level two-dimensional laminates of hydrotalcite are longitudinally and orderly arranged to form a three-dimensional crystal structure, covalent bonds are formed among atoms in the laminates, and weak interaction is formed among the laminates, so that the hydrotalcite exhibits various adjustability. The functional layered nano material can be obtained by inserting an object meeting the requirements between hydrotalcite layers in an intercalation mode. The 2, 3-dihydroxynaphthalene-6-sodium sulfonate DNSA is an organic ultraviolet absorber, has excellent ultraviolet absorption performance, but has poor thermal stability and low light and heat tolerance, and the DNSA is inserted between hydrotalcite layers to form an organic/inorganic composite high-stability supermolecule intercalated ultraviolet absorber, so that hydrotalcite dispersed in a rubber phase has the function of absorbing ultraviolet rays, and the damage of the ultraviolet rays to a rubber protective layer is reduced.
The vulcanizing agent is hexamethylenediamine carbamate, and the accelerator is Vulcofac ACT 55. The anti-aging agent is N-isopropyl-N' -phenyl p-phenylenediamine.
The combined rope core comprises a steel wire and a plurality of aramid fiber filaments, and the aramid fiber filaments are spirally wrapped and twisted with the steel wire.
The outer layer strand consists of a plurality of manganese phosphating coating steel wires.
The water-resistant layer is formed by twisting 3-6 layers of water-resistant yarns.
The embodiment also provides a preparation method of the high-temperature-resistant anti-aging steel wire rope, which comprises the following preparation steps:
step 1, preparing a solid phase change heat storage strip: preparing raw materials according to the formula amount, heating paraffin to melt into liquid paraffin for standby, adding high-density polyethylene, linear low-density polyethylene, diatomite, styrene-butadiene-styrene block copolymer and alumina into an internal mixer, and heating to 130-140 ℃ for melt blending for 10min; adding liquid paraffin into an internal mixer, and continuously blending for 5min; adding coupling agent, blending for 15-20 min, injecting by an extruder, and cooling to obtain the solid phase change heat storage strip in a fixed mode.
Step 2, preparation of an aging-resistant rubber protective layer material:
(1) Raw rubber plasticating and premixing: natural rubber and butadiene rubber are weighed according to a proportion, the natural rubber is plasticated by an open rubber mixer, the plasticating temperature is 70-75 ℃, the natural rubber is thinned and formed into sheets after the roll gap is regulated to be minimum, the roll gap is regulated to the size of a conventional sheet after thinning and passing 8 times, and the premixed raw rubber is obtained by adding the butadiene rubber, triangulating for 10 times, discharging and cooling.
(2) And (3) mixing: adding the formula amount of ethylene-acrylic rubber and acrylic rubber into an internal mixer, banburying at 40 ℃ for 5min, adding an anti-aging agent and stearic acid, banburying at 85 ℃ for 5min, continuously adding premixed raw rubber at the constant temperature, modifying nano hydrotalcite and carbon black, and mixing for 20min to obtain the first-stage rubber compound.
(3) And (3) cooling: the length of rubber compound was removed and cooled to room temperature.
(4) Two-stage mixing: and (3) adding the cooled first-stage rubber compound into an internal mixer again, adding an accelerator and a vulcanizing agent, controlling the rotation speed of a rotor of the internal mixer to be 20 revolutions per minute, stirring for 5 minutes, and discharging the second-stage rubber compound, wherein the rubber discharging temperature is 80 ℃.
(5) Open mill: and (3) putting the two-stage rubber compound into an open mill, carrying out thin pass and 6 times of triangular bag opening, and discharging the sheet to obtain the prepared rubber.
Step 3, preparing a rope core: twisting aramid fiber filaments to form aramid fiber filament yarns, and twisting a plurality of aramid fiber filament yarns to form aramid fiber filaments with a preset diameter; and (3) taking one steel wire as a core, helically wrapping a plurality of aramid fiber wires around the steel wire, and carrying out oil spraying treatment at a folding port to obtain the rope core.
Step 4, rope combination: taking a plurality of manganese series phosphating coating steel wires with preset diameters as outer strands, helically wrapping and twisting the rope cores, arranging the rope cores through a wire distributing disc, compacting the rope cores through a pre-deformer device and a folding port, eliminating strand stress through a deformer, and pre-stretching to reduce the use elongation of the steel wire rope to obtain the semi-finished steel wire rope.
Step 5, preparing the outer layer of the rope strand: twisting 3-6 layers of water-blocking yarns outside the semi-finished steel wire rope and compacting to obtain a water-blocking layer; assembling a plurality of reinforcing ribs at intervals of a preset distance outside the water-blocking layer, and placing solid phase change heat storage strips between the reinforcing ribs to obtain a phase change layer; weaving carbon fiber filaments into carbon fiber cloth with a certain thickness, and fixing the carbon fiber cloth outside the phase-change layer in a hot-pressing mode to enable the carbon fiber cloth to be tightly connected with the reinforcing ribs, so that a carbon fiber layer is obtained; and coating the preparation glue outside the carbon fiber layer, pressurizing and shaping, and cooling to obtain the finished product of the steel wire rope.
Example 1
The embodiment provides a high-temperature-resistant anti-aging steel wire rope, which is prepared by the following steps:
step 1, preparing a solid phase change heat storage strip: preparing raw materials according to the formula amount, heating 35% paraffin to melt into liquid paraffin for later use, adding 20% high-density polyethylene, 20% linear low-density polyethylene, 5% diatomite, 15% styrene-butadiene-styrene block copolymer and 3% alumina into an internal mixer, and heating to 130-140 ℃ for melt blending for 10min; adding liquid paraffin into an internal mixer, and continuously blending for 5min; adding 2% of coupling agent, blending for 15min, injecting through an extruder, and cooling to obtain the solid phase change heat storage strip in a fixed mode.
Step 2, preparation of an aging-resistant rubber protective layer material:
(1) Raw rubber plasticating and premixing: weighing 13% of natural rubber and 28% of butadiene rubber according to a proportion, plasticating the natural rubber by using an open rubber mixing mill, regulating the plasticating temperature to 70 ℃, thinning the natural rubber into sheets after the roll gap is regulated to be minimum, regulating the roll gap to the conventional sheet discharging size after thinning the sheets for 8 times, adding the butadiene rubber, triangulating for 10 times, discharging sheets, and cooling to obtain the premixed raw rubber.
(2) And (3) mixing: adding 10% of ethylene-acrylic rubber and 35% of acrylic rubber into an internal mixer, carrying out internal mixing at 40 ℃ for 5min, adding 2% of anti-aging agent and 2% of stearic acid, carrying out internal mixing at 85 ℃ for 5min, keeping the temperature unchanged, continuously adding premixed raw rubber, 3% of modified nano hydrotalcite and 5% of carbon black, and carrying out mixing for 20min to obtain the first-stage rubber compound.
(3) And (3) cooling: the length of rubber compound was removed and cooled to room temperature.
(4) Two-stage mixing: and (3) adding the cooled first-stage rubber compound into an internal mixer again, adding 1% of accelerator and 1% of vulcanizing agent, controlling the rotating speed of a rotor of the internal mixer to be 20 revolutions per minute, and discharging the second-stage rubber compound after stirring for 5 minutes, wherein the rubber discharging temperature is 80 ℃.
(5) Open mill: and (3) putting the two-stage rubber compound into an open mill, carrying out thin pass and 6 times of triangular bag opening, and discharging the sheet to obtain the prepared rubber.
Step 3, preparing a rope core: twisting aramid fiber filaments to form aramid fiber filament yarns, and twisting a plurality of aramid fiber filament yarns to form aramid fiber filaments with a preset diameter; and (3) taking one steel wire as a core, helically wrapping a plurality of aramid fiber wires around the steel wire, and carrying out oil spraying treatment at a folding port to obtain the rope core.
Step 4, rope combination: taking a plurality of manganese series phosphating coating steel wires with preset diameters as outer strands, helically wrapping and twisting the rope cores, arranging the rope cores through a wire distributing disc, compacting the rope cores through a pre-deformer device and a folding port, eliminating strand stress through a deformer, and pre-stretching to reduce the use elongation of the steel wire rope to obtain the semi-finished steel wire rope.
Step 5, preparing the outer layer of the rope strand: twisting 4 layers of water-blocking yarns outside the semi-finished steel wire rope and compacting to obtain a water-blocking layer; a plurality of reinforcing ribs are arranged outside the water-resistant layer at intervals of a preset distance, and solid phase change heat storage strips are placed between the reinforcing ribs to obtain a phase change layer; weaving carbon fiber filaments into carbon fiber cloth with a certain thickness, and fixing the carbon fiber cloth outside the phase-change layer in a hot-pressing mode to enable the carbon fiber cloth to be tightly connected with the reinforcing ribs, so that a carbon fiber layer is obtained; and coating the preparation glue outside the carbon fiber layer, pressurizing and shaping, and cooling to obtain the finished product of the steel wire rope.
Example 2
The embodiment provides a high temperature resistant anti-aging steel wire rope, and the preparation steps are compared with the embodiment 1, and the difference is that each component and corresponding formula amount adopted in the preparation of the solid phase change heat storage strip in the step 1 are as follows: 33% paraffin wax, 25% high density polyethylene, 19% linear low density polyethylene, 5% diatomaceous earth, 13% styrene-butadiene-styrene block copolymer, 3% alumina and 2% coupling agent. The aging-resistant rubber protective layer material in the step 2 is prepared from the following components in parts by weight: 12% of natural rubber, 30% of butadiene rubber, 12% of ethylene-acrylic ester rubber, 32% of acrylic ester rubber, 2% of anti-aging agent, 2% of stearic acid, 3% of modified nano hydrotalcite, 5% of carbon black, 1% of accelerator and 1% of vulcanizing agent.
The preparation steps are the same except that the corresponding parts by weight of the components are different.
Example 3
The embodiment provides a high temperature resistant anti-aging steel wire rope, and the preparation steps are compared with the embodiment 1, and the difference is that each component and corresponding formula amount adopted in the preparation of the solid phase change heat storage strip in the step 1 are as follows: 33% paraffin wax, 28% high density polyethylene, 16% linear low density polyethylene, 5% diatomaceous earth, 13% styrene-butadiene-styrene block copolymer, 3% alumina and 2% coupling agent. The aging-resistant rubber protective layer material in the step 2 is prepared from the following components in parts by weight: 12% of natural rubber, 28% of butadiene rubber, 15% of ethylene-acrylic ester rubber, 30% of acrylic ester rubber, 2% of anti-aging agent, 2% of stearic acid, 5% of modified nano hydrotalcite, 4% of carbon black, 1% of accelerator and 1% of vulcanizing agent.
The preparation steps are the same except that the corresponding parts by weight of the components are different.
Example 4
The embodiment provides a high temperature resistant anti-aging steel wire rope, and the preparation steps are compared with the embodiment 1, and the difference is that each component and corresponding formula amount adopted in the preparation of the solid phase change heat storage strip in the step 1 are as follows: 31% paraffin wax, 30% high density polyethylene, 15% linear low density polyethylene, 5% diatomaceous earth, 14% styrene-butadiene-styrene block copolymer, 3% alumina and 2% coupling agent. The aging-resistant rubber protective layer material in the step 2 is prepared from the following components in parts by weight: 12% of natural rubber, 28% of butadiene rubber, 12% of ethylene-acrylic ester rubber, 30% of acrylic ester rubber, 2% of anti-aging agent, 2% of stearic acid, 8% of modified nano hydrotalcite, 4% of carbon black, 1% of accelerator and 1% of vulcanizing agent.
The preparation steps are the same except that the corresponding parts by weight of the components are different.
Comparative example 1
This comparative example provides a wire rope, the manufacturing steps are different from example 1 in that the solid phase change heat storage strip manufacturing in step 1 is reduced, the phase change layer is manufactured when the outer layer of the strand is manufactured in step 5, and the rest manufacturing steps are the same.
Comparative example 2
The comparative example provides a steel wire rope, the preparation steps are different from those of the example 1 in that the component of modified nano hydrotalcite is reduced when the aging-resistant rubber protective layer material is prepared in the step 2, and the rest preparation steps are unchanged.
Comparative example 3
The comparative example provides a steel wire rope, the preparation steps are different from example 1 in that the addition of the styrene-butadiene-styrene block copolymer is reduced during the preparation of the solid phase change heat storage strip in step 1, and the rest preparation steps are unchanged.
Performance tests were performed on the solid phase change heat storage strips prepared in examples 1 to 4 and comparative examples 2 and 3, and the test results are shown in table 1 below.
Table 1 is a data table for testing the performance of solid phase change heat storage strips
As can be seen from the data in table 1, the heat storage strip has good mechanical properties by using the high-density polyethylene and the linear low-density polyethylene as the supporting materials, and the polyethylene has good coating properties on paraffin after crosslinking, so that the paraffin is phase-changed and cannot leak out. From the data of comparative example 3, it can be seen that the styrene-butadiene-styrene block copolymer plays a role in matching with polyethylene in packaging paraffin, can reduce leakage of paraffin, and stabilizes the integral structure of the heat storage strip.
Performance tests were performed on the steel wire ropes of examples 1 to 4 and comparative examples 1 to 3 described above, and the test results are shown in table 2.
Table 2 is a table of data for testing the steel wire ropes of examples 1 to 4 and comparative examples 1 to 3
The test results in table 2 show that the steel wire rope prepared by the invention has high-strength breaking force, can perform high-load work, has certain ultraviolet absorption performance on the outer protective layer of the steel wire rope, can prolong the ageing time of rubber, and can prevent the rubber from generating cracks, thereby leading the rubber protective layer to lose efficacy and the inside of the steel wire rope to be corroded. The solid phase change heat storage strip is arranged inside the steel wire rope, the form of the heat storage strip cannot be changed when paraffin in the steel wire rope changes phase, the paraffin liquefying and absorbing heat can adjust the internal temperature of the steel wire rope to a certain extent, the decline of the mechanical property of the steel wire caused by rapid temperature rise is avoided, and the temperature resistance of the steel wire rope is enhanced.
The present invention has been described in detail with reference to the embodiments, and it should be noted that the specific features described in the above embodiments may be modified in combination by any suitable means without contradiction, and the present invention will not be described in any way. Further, other modifications and combinations of the features of the invention, as well as other variations and combinations of the features of the invention, are also contemplated as being within the scope of the invention.
Claims (6)
1. The utility model provides a high temperature resistant ageing resistance wire rope, includes a combination rope core and an outer strand, outer strand spiral package twists the combination rope core, outer strand is equipped with a water-blocking layer outward, the water-blocking layer is twisted by 3 ~ 6 layers of yarn packages that block water and forms, be provided with a phase transition layer outward that blocks water, the phase transition layer is provided with a carbon fiber layer outward, the carbon fiber layer is provided with an ageing resistance rubber protective layer outward, a serial communication port, the phase transition layer includes a plurality of strengthening ribs and a plurality of solid phase change heat storage strip, the component of solid phase change heat storage strip and mass fraction thereof are: 20-30% of high-density polyethylene, 15-20% of linear low-density polyethylene, 30-35% of paraffin, 3-5% of diatomite, 10-15% of styrene-butadiene-styrene block copolymer, 1-3% of coupling agent and 2-4% of alumina; the aging-resistant rubber protective layer comprises the following components in percentage by mass: 10-15% of ethylene-acrylic rubber, 30-35% of acrylic rubber, 28-32% of butadiene rubber, 10-15% of natural rubber, 0.5-1% of vulcanizing agent, 1-3% of accelerator, 2-4% of anti-aging agent, 3-8% of modified nano hydrotalcite, 4-9% of carbon black and 1-5% of stearic acid;
the preparation steps of the high-temperature-resistant anti-aging steel wire rope are as follows:
step 1, preparing a solid phase change heat storage strip: preparing raw materials according to the formula amount, heating paraffin to melt into liquid paraffin for standby, adding high-density polyethylene, linear low-density polyethylene, diatomite, styrene-butadiene-styrene block copolymer and alumina into an internal mixer, and heating to 130-140 ℃ for melt blending for 10min; adding liquid paraffin into an internal mixer, and continuously blending for 5min; adding a coupling agent, blending for 15-20 min, injecting through an extruder, and cooling to obtain a solid phase change heat storage strip in a fixed mode;
step 2, preparation of an aging-resistant rubber protective layer material:
(1) Raw rubber plasticating and premixing: weighing natural rubber and butadiene rubber according to a proportion, plasticating the natural rubber by using an open rubber mixing mill at 70-75 ℃, regulating the roll gap to be minimum, thin-passing the natural rubber into sheets, regulating the roll gap to the size of a conventional sheet after 8 times of thin-passing, adding the butadiene rubber, triangulating for 10 times, discharging sheets, and cooling to obtain premixed raw rubber;
(2) And (3) mixing: adding the formula amount of ethylene-acrylic rubber and acrylic rubber into an internal mixer, banburying at 40 ℃ for 5min, adding an anti-aging agent, stearic acid, banburying at 85 ℃ for 5min, continuously adding premixed raw rubber at the constant temperature, modifying nano hydrotalcite and carbon black, and mixing for 20min to obtain a section of mixed rubber;
(3) And (3) cooling: taking out a section of the rubber compound and cooling to room temperature;
(4) Two-stage mixing: adding the cooled first-stage rubber compound into an internal mixer again, adding an accelerator and a vulcanizing agent, controlling the rotation speed of a rotor of the internal mixer to be 20 revolutions per minute, stirring for 5 minutes, and then discharging the second-stage rubber compound, wherein the rubber discharging temperature is 80 ℃;
(5) Open mill: placing the two-stage rubber compound into an open mill, carrying out thin pass and 6 times of triangular bag opening, and discharging to obtain a prepared rubber;
step 3, preparing a rope core: twisting aramid fiber filaments to form aramid fiber filament yarns, and twisting a plurality of aramid fiber filament yarns to form aramid fiber filaments with a preset diameter; taking a steel wire as a core, helically wrapping a plurality of aramid fiber wires around the steel wire, and carrying out oil spraying treatment at a folding port to obtain a rope core;
step 4, rope combination: taking a plurality of manganese series phosphating coating steel wires with preset diameters as outer strands, helically wrapping and twisting the rope cores, arranging the rope cores through a wire distributing disc, compacting the rope cores through a pre-deformer device and a folding port, eliminating strand stress through a deformer, and pre-stretching to reduce the use elongation of the steel wire rope to obtain a semi-finished steel wire rope;
step 5, preparing the outer layer of the rope strand: twisting 3-6 layers of water-blocking yarns outside the semi-finished steel wire rope and compacting to obtain a water-blocking layer; a plurality of reinforcing ribs are arranged outside the water-resistant layer at intervals of a preset distance, and solid phase change heat storage strips are placed between the reinforcing ribs to obtain a phase change layer; weaving carbon fiber filaments into carbon fiber cloth with a certain thickness, and fixing the carbon fiber cloth outside the phase-change layer in a hot-pressing mode to enable the carbon fiber cloth to be tightly connected with the reinforcing ribs, so that a carbon fiber layer is obtained; and coating the preparation glue outside the carbon fiber layer, pressurizing and shaping, and cooling to obtain the finished product of the steel wire rope.
2. The high temperature and aging resistant wire rope of claim 1, wherein: the preparation method of the modified nano hydrotalcite comprises the following steps: hydrotalcite is modified by adopting a mode of substituting hydrotalcite interlayer anions with an ultraviolet absorbent, wherein the ultraviolet absorbent is 2, 3-dihydroxynaphthalene-6-sodium sulfonate DNSA, and the hydrotalcite is magnesium aluminum hydrotalcite MgAl-NO 3 LDHs prepared by inserting 2, 3-dihydroxynaphthalene-6-sodium sulfonate anion into hydrotalcite MgAl-NO 3 The modified nano hydrotalcite MgAl-DNSA-LDHs is prepared between the LDHs layers.
3. The high temperature and aging resistant wire rope of claim 2, wherein: the vulcanizing agent is hexamethylenediamine carbamate, and the accelerator is Vulcofac ACT 55.
4. The high temperature and aging resistant wire rope of claim 2, wherein: the anti-aging agent is N-isopropyl-N' -phenyl p-phenylenediamine.
5. The high temperature and aging resistant wire rope of claim 1, wherein: the combined rope core comprises a steel wire and a plurality of aramid fiber filaments, and the aramid fiber filaments are spirally wrapped and twisted with the steel wire.
6. The high temperature and aging resistant wire rope of claim 1, wherein: the outer layer strand consists of a plurality of manganese phosphating coating steel wires.
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