CN115679726B - Anti-biological-adhesion plastic-coated steel cable for buoy, preparation method thereof and buoy anchoring system - Google Patents
Anti-biological-adhesion plastic-coated steel cable for buoy, preparation method thereof and buoy anchoring system Download PDFInfo
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Abstract
The invention relates to the technical field of anchoring of oceanographic buoys, in particular to a plastic-coated steel cable for preventing organism adhesion for buoys, a preparation method thereof and a buoy anchoring system. The plastic-coated steel cable comprises a steel cable inner core and a plastic-coated layer coated outside the steel cable inner core; the steel wire rope inner core is a non-rotating steel wire rope twisted by three strands of steel wire strands, each strand of steel wire strand is twisted by a central wire, a middle filling wire and an outer layer wire, the central wire is one, the middle filling wire is nine, and the outer layer wire is nine; the twisting direction of the steel wire strands is opposite to that of the steel wire rope inner core; the plastic-coated layer comprises the following components: HDPE, antioxidant 1010, EVA, color master batch, silicone master batch, ultraviolet absorbent, nano-silver antibacterial agent and capsaicin. The invention has excellent biological adhesion resistance, ageing resistance and knotting resistance. The plastic-coated cable prepared by the invention can be widely applied to a buoy anchoring system, and the mooring effect of a buoy is improved.
Description
Technical Field
The invention relates to the technical field of anchoring of ocean buoys, in particular to a plastic coated steel cable for preventing organism adhesion for buoys, a preparation method of the plastic coated steel cable and a buoy anchoring system.
Background
The marine observation buoy is an unmanned automatic marine observation station, can work all weather in any severe environment, and can continuously collect required data for marine scientific research for a long time according to the specified requirements.
The anchoring system is an important component of the ocean observation buoy, wherein the upper anchoring part of the anchoring system usually adopts plastic-covered steel cables. The plastic-coated steel cable has three functions, one is a buoy mooring function, the other is to hang and fix the underwater sensor for measuring the seawater index on the plastic-coated steel cable, the third is to transmit the signal of the underwater sensor, the plastic-coated steel cable is used as a data communication channel, and the electromagnetic coupling function of the coupling coil of the underwater sensor and the water receiver is utilized to complete the data communication of the underwater sensor and the water receiver. Two ends of the plastic-coated steel cable are exposed in seawater to serve as electrodes, and the plastic-coated steel cable and the seawater form a complete closed loop by utilizing the conductive property of the seawater to form a data communication channel; and the data transmission from the underwater sensor to the water surface receiver is realized by utilizing the electromagnetic coupling effect between the coupling coils between the underwater sensor and the water surface receiver.
The technical defects of the existing plastic-coated steel cable are that the marine organism adhesion prevention performance is poor, the weight of the plastic-coated steel cable is increased after the organisms are adhered, the flow resistance is increased, the working load of an anchoring system is increased, and the use safety of the anchoring system is influenced. At present, the anti-adhesion method mainly adds a coating on the outer part of a product, so that the problems of environmental pollution, reduced anti-adhesion performance and the like caused by coating falling are easily caused.
Disclosure of Invention
Aiming at the technical problems of poor biological adhesion prevention performance and the like of the plastic-coated cable, the invention provides the biological adhesion prevention plastic-coated steel cable for the buoy, the preparation method thereof and the buoy anchoring system, which have excellent biological adhesion prevention performance, so that the plastic-coated steel cable can be used for a long time in a severe marine environment, and the service life and the safety performance of the plastic-coated steel cable are improved; meanwhile, the plastic-coated cable provided by the invention also has good ageing resistance and knotting resistance. The plastic-coated cable prepared by the invention can be widely applied to a buoy anchoring system, and the mooring effect of a buoy is improved.
In a first aspect, the invention provides a biological adhesion prevention plastic-coated steel cable for a buoy, which comprises a steel cable inner core and a plastic-coated layer coated outside the steel cable inner core;
the steel wire rope inner core is a non-rotating steel wire rope twisted by three steel wire strands, each steel wire strand is twisted by a central wire, a middle filling wire and an outer layer wire, the central wire is one, the middle filling wire is nine, and the outer layer wire is nine; the twisting direction of the steel wire strands is opposite to that of the steel wire rope inner core;
the plastic-coated layer comprises the following components: HDPE (high density polyethylene), antioxidant 1010, EVA (ethylene-vinyl acetate copolymer), color master batch, silicone master batch, ultraviolet absorbent, nano-silver antibacterial agent and capsaicin.
Further, the diameter of the inner core of the steel wire rope is 9.5mm, and the lay length is 70 to 80mm; the diameter of the central wire is 1.3mm, the diameter of the intermediate filling wire is 0.7mm, the diameter of the outer layer wire is 1.2mm, and the lay length of the steel wire strand is 35 to 40mm.
Furthermore, the diameter of the plastic-coated steel cable is 11.5 to 15.5mm.
Further, based on the amount of HDPE, the amount of the antioxidant 1010 is 0.3-0.5%, the amount of EVA is 3.5-5%, the amount of the color master batch is 1-2%, the amount of the silicone master batch is 1-1.6%, the amount of the ultraviolet absorbent is 0.5-0.8%, the amount of the nano-silver antibacterial agent is 0.5-1%, and the amount of the capsaicin is 3-5%. Furthermore, the HDPE has a melt index of 0.8 to 1.2 g/10min, tensile strength of 25 to 28 MPa and volume resistivity of more than 1 x 1015; the content of VA (vinyl acetate) in EVA is 18% -22%; the grain diameter of the nano-silver antibacterial agent is 20 to 30nm.
In a second aspect, the invention provides a preparation method of a biological adhesion prevention plastic-coated steel cable for a buoy, which comprises the following steps:
s1, drawing a carbon steel wire rod made of 70# carbon steel to obtain a central wire with the diameter of 1.3mm, a middle filling wire with the diameter of 0.7mm and an outer layer wire with the diameter of 1.2 mm;
s2, twisting the center wire, the middle filling wire and the outer layer wire in the step S1 to obtain a steel wire strand with a structure of 1+ 9;
s3, twisting the 3 steel wire strands obtained in the step S2 into a steel wire rope inner core, wherein the structure of the steel wire rope inner core is 3 multiplied by 19, and the twisting direction of the steel wire rope inner core is opposite to that of the steel wire strands during twisting;
and S4, mixing the components of the plastic coating layer, and performing melt extrusion by using a screw extruder to coat the plastic on the inner core of the steel wire rope to obtain a finished product.
Further, in the step S1, hot galvanizing treatment is carried out on the central wire, the middle filling wire and the outer layer wire, the temperature of a zinc liquid is 460 ℃, and the mass of a zinc layer is 115-120 g/m 2 。
Further, in step S4, the steel wire rope is induction preheated before being wrapped with plastic, and the steel wire rope is induction heated and then wrapped with plastic, so that the steel wire rope can be tightly combined with the plastic-wrapped layer.
Further, in the step S4, the concrete process of coating the steel wire rope inner core with plastic is that the components of the plastic coating layer are mixed and then melt-extruded through a first zone, a second zone, a third zone and a fourth zone of a cylinder of a screw extruder and a first zone, a second zone and a third zone of a die to enter a mold opening of the plastic coating; the temperatures of the first zone, the second zone, the third zone and the fourth zone of the machine barrel of the screw extruder are respectively set to be 155-165 ℃, 165-175 ℃ and 175-185 ℃, and the temperatures of the first zone, the second zone and the third zone of the die are respectively set to be 185-175 ℃, 175-165 ℃.
Furthermore, the die orifice for plastic coating adopts a customized extrusion die orifice, the diameter of an inner die orifice of the die orifice for plastic coating is 0.2 to 0.5mm larger than that of the steel wire rope inner core, and the diameter of an outer die orifice is equal to that of a finished product. The roughness Ra of the extrusion die is less than 0.032um. The length of the cooling water tank is 5 to 10m, and the water temperature is controlled to be 25 to 30 ℃. The speed ratio of the traction machine to the straightening machine is 1.5 to 2:1.
in a third aspect, the invention provides a buoy anchoring system, which comprises the anti-biological-attachment plastic-coated steel cable for the buoy.
The invention has the beneficial effects that:
(1) The plastic-coated cable adopts the steel wire rope inner core, the steel wire rope with the structure has good anti-rotation performance and excellent anti-knotting performance, and the corrosion resistance is improved after galvanization;
(2) The plastic-coated layer is a mixture obtained by modifying HDPE, and specifically comprises the following components:
(21) According to the invention, the silicone master batch is added into the HDPE, so that the surface smoothness of the plastic-coated steel cable is improved, the product quality is improved, material demoulding is facilitated, and the product processability is improved;
(22) The EVA is added into the plastic-coated layer, so that the toughness of the HDPE can be improved, and the environmental stress cracking resistance of the product is enhanced;
(23) The antioxidant 1010 and the ultraviolet absorber are added into the plastic-coated layer, so that the light resistance and the ageing resistance of HDPE are improved, and the service cycle of the product is prolonged;
(24) According to the invention, the nano silver antibacterial agent and the capsaicin are added into the plastic-coated layer, and silver ions have broad-spectrum antibacterial property, and contact reaction with cells causes the damage of inherent components of bacteria, and also can inhibit the synthesis of protein, so that the bacteria die and can not grow and reproduce; the capsaicin has special effect on barnacles with the greatest harm, also has obvious prevention and removal effects on other aquatic fouling organisms, and endows the product with antibacterial and anti-biological adhesion functions;
the plastic-coated layer component improves the biological adhesion resistance of the product and improves the service life and the safety performance of the plastic-coated cable through multiple-effect synergistic action.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a sectional view of a plastic-coated cable structure according to embodiment 1 of the present invention.
In the figure, 1-steel strand, 11-central filament, 12-middle filling filament, 13-outer layer filament and 2-plastic coating layer.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, 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. 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
With reference to fig. 1, the biological adhesion prevention plastic-coated steel cable for the buoy comprises a steel cable inner core and a plastic-coated layer 2 coated outside the steel cable inner core, wherein the diameter of the plastic-coated steel cable is 13.5mm;
the inner core of the steel wire rope is a non-rotating steel wire rope twisted by three strands of steel wires 1, the diameter of the inner core of the steel wire rope is 9.5mm, the lay length is 80mm, and the twisting direction of the inner core of the steel wire rope is in the right direction; each strand of steel wire strand 1 is formed by twisting a central wire 11, a middle filling wire 12 and an outer layer wire 13, wherein the central wire 11 is one, the middle filling wire is nine, the outer layer wire 13 is nine, the diameter of the central wire 11 is 1.3mm, the diameter of the middle filling wire 12 is 0.7mm, the diameter of the outer layer wire 13 is 1.2mm, the lay length of the steel wire strand 1 is 35mm, and the lay direction of the steel wire strand 1 is in the left direction; the structure of the steel wire strand is 1+9, and the structure of the inner core of the steel wire rope is 3 multiplied by 19.
The plastic coating layer 2 comprises the following components: HDPE (melt index 0.89 g/10 min); antioxidant 1010, the addition amount of which is 0.3 percent of the weight of the HDPE; EVA powder with VA content of 18% and added amount of 4% of HDPE weight; the color master batch is added in an amount of 1% of the weight of the HDPE; the silicone master batch contains 99 percent of active substances, and the adding amount of the silicone master batch is 1 percent of the weight of HDPE; ultraviolet absorbent UV-0, the content of active substances is 99 percent, and the addition amount is 0.5 percent of the weight of HDPE; the nano-silver antibacterial agent powder has 99 percent of active substance content and 20nm of grain diameter, and the addition amount is 0.8 percent of the weight of HDPE; capsaicin powder, capsaicin 99%, in an amount of 3% by weight based on the weight of HDPE.
The preparation method of the biological adhesion-preventing plastic-coated steel cable for the buoy comprises the following steps:
selecting a 6mm high-quality carbon steel wire rod made of 70# carbon steel, selecting a tunnel type pickling production line, and removing oxide skin on the surface of the carbon steel wire rod and forming a compact phosphating film through three processes of pickling, phosphating and neutralizing so as to meet the requirement of primary drawing;
the carbon steel wire rod is subjected to 3 drawing processes to finally obtain a steel wire with the diameter of 4.6mm, primary drawing is completed by the total reduction of 76.7%, the carbon steel wire rod subjected to primary drawing is subjected to secondary drawing after being subjected to heat treatment, 10-12 drawing processes are performed, and a central wire with the diameter of 1.3mm, an intermediate filling wire with the diameter of 0.7mm and an outer layer wire with the diameter of 1.2mm are finally obtained, wherein the tensile strength grade of the steel wire is 1870MPa;
sequentially carrying out alkali washing, hot water washing, hydrochloric acid washing, cold water washing, solvent coating and hot galvanizing processes on the three steel wires obtained by secondary drawing in the step (2), wherein the temperature of a zinc liquid is 460 ℃, and the quality of a zinc layer is controlled within 115-120 g/m 2 ；
Twisting the center wire, the middle filling wire and the outer layer wire in the step (3) to prepare a steel wire strand, wherein the structure of the steel wire strand is 1+9, and the twisting direction is the left direction; twisting 3 prepared steel wire strands into a steel wire rope inner core, wherein the structure of the steel wire rope inner core is 3 multiplied by 19, and the twisting direction is the right direction;
and (3) sequentially straightening the steel wire rope inner core prepared in the step (4), carrying out induction heating and plastic coating by a screw extruder, wherein the concrete process for plastic coating of the steel wire rope inner core comprises the steps of mixing all components of a plastic coating layer, then carrying out melt extrusion on the components in a first zone, a second zone, a third zone and a fourth zone of a cylinder of the screw extruder, carrying out melt extrusion on the components in the first zone, the second zone and the third zone of a die, and feeding the molten extruded components into a plastic coating die orifice, wherein the temperatures of the first zone, the second zone, the third zone and the fourth zone of the cylinder of the screw extruder are respectively 155 ℃, 165 ℃ and 175 ℃, and the temperatures of the first zone, the second zone and the third zone of the die are respectively 175 ℃, 175 ℃ and 165 ℃. The die orifice for plastic coating adopts a customized extrusion die orifice, the diameter of the inner die orifice is 9.7mm, the diameter of the outer die orifice is 13.5mm, and the roughness Ra of the die is less than 0.032um;
and (3) carrying out water cooling, traction and rolling on the medium-plastic cable in the step (5) to obtain a finished product, wherein the length of a cooling water tank is 8m, the temperature of the cooling water is controlled to be 25 to 30 ℃, and the speed ratio of a traction machine to a straightening machine is 2:1.
example 2
The biological adhesion prevention plastic-coated steel cable for the buoy comprises a steel cable inner core and a plastic-coated layer coated outside the steel cable inner core, wherein the diameter of the plastic-coated steel cable is 15.5mm;
the inner core of the steel wire rope is a non-rotating steel wire rope twisted by three strands of steel wires, the diameter of the inner core of the steel wire rope is 9.5mm, the lay length is 80mm, and the twisting direction of the inner core of the steel wire rope is right; each strand of steel wire strand is formed by twisting a central wire, a middle filling wire and an outer layer wire, wherein the central wire is one, the middle filling wire is nine, the outer layer wire is nine, the diameter of the central wire is 1.3mm, the diameter of the middle filling wire is 0.7mm, the diameter of the outer layer wire is 1.2mm, the lay length of the steel wire strand is 35mm, and the twisting direction of the steel wire strand is in the left direction; the structure of the steel wire strand is 1+9, and the structure of the inner core of the steel wire rope is 3 multiplied by 19.
The plastic-coated layer comprises the following components: HDPE (melt index 0.89 g/10 min); antioxidant 1010, the addition amount of which is 0.4 percent of the weight of the HDPE; EVA powder with VA content of 22% and added amount of 3.5% of HDPE weight; the addition amount of the color master batch is 2 percent of the weight of the HDPE; the silicone master batch contains 99 percent of active substances, and the adding amount of the silicone master batch is 1.6 percent of the weight of HDPE; ultraviolet absorbent UV-0, the content of effective substances is 99%, and the addition amount is 0.8% of the weight of HDPE; the nano-silver antibacterial agent powder has 99 percent of active substance content, 20nm of grain diameter and 0.5 percent of the weight of HDPE; capsaicin powder and capsaicine 99% in the amount of 5 wt% of HDPE.
The preparation method of the biological adhesion-preventing plastic-coated steel cable for the buoy comprises the following steps:
(1) Selecting a 6mm high-quality carbon steel wire rod made of 70# carbon steel, selecting a tunnel type acid pickling production line, removing oxide skin on the surface of the carbon steel wire rod and forming a compact phosphating film through three processes of acid pickling, phosphating and neutralizing so as to meet the requirement of primary drawing;
(2) The carbon steel wire rod is subjected to 3 drawing processes to finally obtain a steel wire with the diameter of 4.6mm, primary drawing is completed by the total reduction of 76.7%, the carbon steel wire rod subjected to primary drawing is subjected to secondary drawing after being subjected to heat treatment, 10-12 drawing processes are performed, and a central wire with the diameter of 1.3mm, an intermediate filling wire with the diameter of 0.7mm and an outer layer wire with the diameter of 1.2mm are finally obtained, wherein the tensile strength grade of the steel wire is 1870MPa;
(3) Sequentially carrying out alkali washing, hot water washing, hydrochloric acid washing, cold water washing, solvent coating and hot galvanizing processes on the three steel wires obtained by secondary drawing in the step (2), wherein the temperature of a zinc liquid is 460 ℃, and the quality of a zinc layer is controlled within 115-120 g/m 2 ；
(4) Twisting the center wire, the middle filling wire and the outer layer wire in the step (3) to prepare a steel wire strand, wherein the structure of the steel wire strand is 1+9, and the twisting direction is the left direction; twisting 3 prepared steel wire strands into a steel wire rope inner core, wherein the structure of the steel wire rope inner core is 3 multiplied by 19, and the twisting direction is the right direction;
(5) And (3) sequentially straightening the steel wire rope inner core prepared in the step (4), carrying out induction heating and plastic coating by a screw extruder, wherein the concrete process for plastic coating of the steel wire rope inner core comprises the steps of mixing all components of a plastic coating layer, then carrying out melt extrusion on the mixed components in a first zone, a second zone, a third zone and a fourth zone of a machine barrel of the screw extruder, carrying out melt extrusion on the first zone, the second zone and the third zone of a mold, and feeding the molten extruded components into a plastic coating mold opening, wherein the temperatures of the first zone, the second zone, the third zone and the fourth zone of the machine barrel of the screw extruder are respectively 165 ℃, 175 ℃ and 185 ℃, and the temperatures of the first zone, the second zone and the third zone of the mold are respectively 185 ℃, 185 ℃ and 175 ℃. The die orifice for plastic coating adopts a customized extrusion die orifice, the diameter of the inner die orifice is 10.0mm, the diameter of the outer die orifice is 15.5mm, and the roughness Ra of the die is less than 0.032um;
(6) And (3) carrying out water cooling, traction and rolling on the medium-plastic cable in the step (5) to obtain a finished product, wherein the length of a cooling water tank is 8m, the temperature of the cooling water is controlled to be 25 to 30 ℃, and the speed ratio of a traction machine to a straightening machine is 2:1.
example 3
The biological adhesion prevention plastic-coated steel cable for the buoy comprises a steel cable inner core and a plastic-coated layer coated outside the steel cable inner core, wherein the diameter of the plastic-coated steel cable is 11.5mm;
the inner core of the steel wire rope is a non-rotating steel wire rope twisted by three strands of steel wires, the diameter of the inner core of the steel wire rope is 9.5mm, the lay length is 80mm, and the twisting direction of the inner core of the steel wire rope is in the left direction; each strand of steel wire strand is formed by twisting a central wire, a middle filling wire and an outer layer wire, wherein the central wire is one, the middle filling wire is nine, the outer layer wire is nine, the diameter of the central wire is 1.3mm, the diameter of the middle filling wire is 0.7mm, the diameter of the outer layer wire is 1.2mm, the lay length of the steel wire strand is 35mm, and the twisting direction of the steel wire strand is the right direction; the structure of the steel wire strand is 1+9, and the structure of the inner core of the steel wire rope is 3 multiplied by 19.
The plastic coating layer comprises the following components: HDPE (melt index 0.89 g/10 min); antioxidant 1010, the addition amount of which is 0.5 percent of the weight of the HDPE; EVA powder with VA content of 22% and added amount of 5% of HDPE weight; the color master batch is added in an amount of 2 percent of the weight of the HDPE; the silicone master batch has 99 percent of active substance content and the addition amount of 2.0 percent of the weight of HDPE; ultraviolet absorbent UV-0, the content of effective substances is 99%, and the addition amount is 0.6% of the weight of HDPE; the nano-silver antibacterial agent powder has 99 percent of active substance content, 20nm of grain diameter and 1.0 percent of the weight of HDPE; capsaicin powder, capsaicin 99%, added in 4% of HDPE weight.
The preparation method of the biological adhesion-preventing plastic-coated steel cable for the buoy comprises the following steps:
(1) Selecting a 6mm high-quality carbon steel wire rod made of 70# carbon steel, selecting a tunnel type acid pickling production line, removing oxide skin on the surface of the carbon steel wire rod and forming a compact phosphating film through three processes of acid pickling, phosphating and neutralizing so as to meet the requirement of primary drawing;
(2) The carbon steel wire rod is subjected to 3 drawing processes to finally obtain a steel wire with the diameter of 4.6mm, primary drawing is completed by the total reduction of 76.7%, the carbon steel wire rod subjected to primary drawing is subjected to secondary drawing after being subjected to heat treatment, 10-12 drawing processes are performed, and a central wire with the diameter of 1.3mm, an intermediate filling wire with the diameter of 0.7mm and an outer layer wire with the diameter of 1.2mm are finally obtained, wherein the tensile strength grade of the steel wire is 1870MPa;
(3) Sequentially carrying out alkali washing, hot water washing, hydrochloric acid washing, cold water washing, solvent coating and hot galvanizing processes on the three steel wires obtained by secondary drawing in the step (2), wherein the temperature of a zinc liquid is 460 ℃, and the quality of a zinc layer is controlled within 115-120 g/m 2 ；
(4) Twisting the central wire, the intermediate filling wire and the outer layer wire in the step (3) to prepare a steel wire strand, wherein the structure of the steel wire strand is 1+9, and the twisting direction is left direction; twisting the 3 prepared steel strand ropes into a steel wire rope inner core, wherein the structure of the steel wire rope inner core is 3 multiplied by 19, and the twisting direction is the right direction;
(5) And (3) sequentially straightening the steel wire rope inner core prepared in the step (4), carrying out induction heating and plastic coating by a screw extruder, wherein the concrete process for plastic coating of the steel wire rope inner core comprises the steps of mixing all components of a plastic coating layer, then carrying out melt extrusion on the components through a first zone, a second zone, a third zone and a fourth zone of a cylinder of the screw extruder, carrying out melt extrusion on the components in the first zone, the second zone and the third zone of a die, and feeding the molten extruded components into a plastic coating die opening, wherein the temperatures of the first zone, the second zone, the third zone and the fourth zone of the cylinder of the screw extruder are respectively 160 ℃, 170 ℃ and 180 ℃, and the temperatures of the first zone, the second zone and the third zone of the die are respectively 180 ℃, 180 ℃ and 170 ℃. The die orifice for plastic coating adopts a customized extrusion die orifice, the diameter of the inner die orifice is 11.9mm, the diameter of the outer die orifice is 11.5mm, and the roughness Ra of the die is less than 0.032um;
(6) And (4) carrying out water cooling, traction and rolling on the medium-plastic cable in the step (5) to obtain a finished product, wherein the length of a cooling water tank is 8m, the temperature of the cooling water is controlled to be 25 to 30 ℃, and the speed ratio of a traction machine to a straightening machine is 2:1.
comparative example
The difference of the comparative example and the example 1 is that the components of the plastic coating layer of the comparative example do not contain antioxidant 1010, EVA, color master batch, silicone master batch, ultraviolet absorbent, nano-silver antibacterial agent and capsaicin.
Test example 1
The plastic-coated cables prepared in example 1 and comparative example 1 were subjected to the antimicrobial adhesion test by placing sterilized samples of the plastic-coated cables in cell culture plates, respectively, and adding 200ul of the pseudomonas bacteria suspension. After incubation at 30 ℃ for 4 hours, the surface was gently rinsed three times with 1ml of PBS to remove weakly adherent bacteria, the number of colonies was observed, and the antibacterial rate of the sample was calculated. The calculation formula of the antibacterial rate is as follows:
antibacterial rate = (number of colonies in control group-number of colonies in test sample)/number of colonies in control group × 100%.
Test example 2
The plastic-coated cables obtained in example 1 and comparative example 1 were subjected to a marine organism adhesion prevention test by suspending the plastic-coated steel cables in seawater, observing the surface organism adhesion after 6 months, and calculating the surface organism adhesion area.
Test example 3
The aging resistance tests were performed on the plastic-covered cables obtained in example 1 and comparative example 1 by exposing the plastic-covered steel cables to the atmospheric environment for 30 days, respectively, and then observing the surface states.
Test examples 1 to 3 the results of the experiment are shown in table 1.
Table 1 test results of performance of plastic-coated cables of example 1 and comparative example 1
| Item | Example 1 | Comparative example |
| Antibacterial rate | 99.90% | 40% |
| Attachment area | 5% | 35% |
| Surface state of | Without cracking | Has cracks |
As can be seen from the table 1, compared with the plastic-coated steel cable in the comparative example 1, the plastic-coated steel cable prepared by the invention has excellent antibacterial performance and anti-biological adhesion performance, and the aging resistance is also improved.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions should be within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the scope of the present invention.
Claims (6)
1. A biological adhesion prevention plastic coated steel cable for a buoy is characterized by comprising a steel cable inner core and a plastic coated layer coated outside the steel cable inner core;
the steel wire rope inner core is a non-rotating steel wire rope twisted by three steel wire strands, each steel wire strand is twisted by a central wire, a middle filling wire and an outer layer wire, the central wire is one, the middle filling wire is nine, and the outer layer wire is nine; the twisting direction of the steel wire strands is opposite to that of the steel wire rope inner core;
the plastic-coated layer comprises the following components: HDPE, antioxidant 1010, EVA, color master batch, silicone master batch, ultraviolet absorbent, nano-silver antibacterial agent and capsaicin; based on the amount of HDPE, the amount of antioxidant 1010 is 0.3-0.5%, the amount of EVA is 3.5-5%, the amount of color master batch is 1-2%, the amount of silicone master batch is 1-1.6%, the amount of ultraviolet absorbent is 0.5-0.8%, the amount of nano-silver antibacterial agent is 0.5-1%, and the amount of capsaicin is 3-5%;
the preparation method of the biological adhesion prevention plastic coated steel cable for the buoy comprises the following steps:
s1, drawing a carbon steel wire rod made of 70# carbon steel to obtain a central wire with the diameter of 1.3mm, a middle filling wire with the diameter of 0.7mm and an outer layer wire with the diameter of 1.2 mm;
s2, twisting the center wire, the middle filling wire and the outer layer wire in the step S1 to obtain a steel wire strand with a structure of 1+ 9;
s3, twisting the 3 steel wire strands obtained in the step S2 into a steel wire rope inner core, wherein the steel wire rope inner core structure is 3 multiplied by 19, and the twisting direction of the steel wire rope inner core is opposite to that of the steel wire strands during twisting;
s4, mixing the components of the plastic coating layer, and performing melt extrusion by a screw extruder to coat the plastic on the inner core of the steel wire rope to obtain a finished product;
in the step S1, hot galvanizing treatment is carried out on the central wire, the middle filling wire and the outer layer wire, the temperature of zinc liquid is 460 ℃, and the mass of a zinc layer is 115-120 g/m 2 ；
In the step S4, the concrete process of coating the steel wire rope inner core is that the components of the coating layer are mixed and then are melted and extruded through a first zone, a second zone, a third zone and a fourth zone of a machine barrel of a screw extruder and a first zone, a second zone and a third zone of a die, and then enter a coating die opening; the temperature of the first zone, the second zone, the third zone and the fourth zone of the machine barrel of the screw extruder are respectively set to be 155-165 ℃, 165-175℃,
165-175 ℃, 175-185 ℃, and the temperatures of the first zone, the second zone and the third zone of the die are respectively 185-175 ℃, 185-175 ℃ and 175-165 ℃.
2. The anti-biological-adhesion plastic-coated steel cable for the buoy as claimed in claim 1, wherein the diameter of the inner core of the steel cable is 9.5mm, and the lay length is 70-80 mm; the diameter of the central filament is 1.3mm, the diameter of the filling filament in the middle is 0.7mm, the diameter of the outer layer filament is 1.2mm, and the lay length of the steel wire strand is 35-40 mm.
3. The anti-biofouling plastic coated steel cable for buoys according to claim 1, wherein the diameter of the plastic coated steel cable is 11.5 to 15.5mm.
4. The method for preparing the bio-adhesion-preventing plastic-coated steel cable for the buoy as claimed in claim 1, wherein in the step S4, the steel cable core is induction preheated before being coated with plastic.
5. The method for preparing the anti-biological-adhesion coated steel cable for the buoy as claimed in claim 1, wherein the diameter of the inner die opening of the coated die opening is 0.2-0.5 mm larger than the diameter of the inner core of the steel cable, and the diameter of the outer die opening is equal to the diameter of a finished product.
6. A buoy mooring system comprising the bio-fouling resistant coated steel cable for a buoy of claim 1.
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|---|---|---|---|---|
| US6260343B1 (en) * | 1998-05-01 | 2001-07-17 | Wire Rope Corporation Of America, Incorporated | High-strength, fatigue resistant strands and wire ropes |
| CN208266567U (en) * | 2018-04-23 | 2018-12-21 | 华南农业大学 | A kind of corrosion-resistant cable of sea farming waterproof antiwear |
| CN216615290U (en) * | 2021-10-27 | 2022-05-27 | 盐城市博莱格绳网有限公司 | Ultra-high molecular weight polyethylene cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3374619A (en) * | 1966-04-27 | 1968-03-26 | United States Steel Corp | Torque balanced rope |
| CN106087497B (en) * | 2016-08-09 | 2018-04-17 | 中国水产科学研究院东海水产研究所 | A kind of dark blue fishery rete cord processing method |
| CN207468951U (en) * | 2017-09-28 | 2018-06-08 | 浙江四兄绳业有限公司 | A kind of corrosion resistant steel wire rope |
| CN109853274A (en) * | 2018-12-26 | 2019-06-07 | 天津冶金钢线钢缆集团有限公司 | HDPE hot dip allumen prestress wire production technology |
| CN113999443A (en) * | 2020-07-13 | 2022-02-01 | 苏州浩恒塑胶有限公司 | Coating material for mariculture support and preparation method thereof |
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2023
- 2023-01-05 CN CN202310009838.6A patent/CN115679726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260343B1 (en) * | 1998-05-01 | 2001-07-17 | Wire Rope Corporation Of America, Incorporated | High-strength, fatigue resistant strands and wire ropes |
| CN208266567U (en) * | 2018-04-23 | 2018-12-21 | 华南农业大学 | A kind of corrosion-resistant cable of sea farming waterproof antiwear |
| CN216615290U (en) * | 2021-10-27 | 2022-05-27 | 盐城市博莱格绳网有限公司 | Ultra-high molecular weight polyethylene cable |
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