CN110517820B - Carbon fiber composite core wire core rod for power transmission line - Google Patents
Carbon fiber composite core wire core rod for power transmission line Download PDFInfo
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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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
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Abstract
The invention discloses a carbon fiber composite core wire core rod of a power transmission line, which belongs to the technical field of power transmission line wires and is prepared from the following raw materials in parts by weight: 30-40 parts of modified carbon fiber, 12-20 parts of glass fiber, 6-12 parts of polyester fiber, 8-15 parts of silicon nitride, 20-28 parts of polyurethane resin, 210 parts of xylene 205-. The surface of the core rod is round, smooth and even, the color is consistent, no defect exists, the tensile strength is more than 2663MPa, the elastic modulus is more than 130GPa, the core rod is wound on a cylinder body with the diameter of 55D for 1 circle at the winding speed of not more than 3r/min, the core rod does not crack or break, the radial pressure resistance performance test is carried out, the pressure of not less than 30KN is borne, and the end part does not crack or peel. And in a 360-degree torsion test, the surface layer is not cracked, and the tensile strength after torsion reaches over 2511 MPa.
Description
Technical Field
The invention relates to the technical field of transmission line wires, in particular to a carbon fiber composite core wire core rod of a transmission line.
Background
The power transmission conductor is a main component of an overhead line, plays a role in transmitting electric energy from a power supply to a power load center, and occupies an extremely important position in a power transmission line. In the development process of the country, the development of the power system is very beginning to play, and the situation of power supply shortage becomes a great problem to be solved urgently. The shortage of power resources brings the situation of insufficient power utilization of long-term enterprises and individuals, and the backward construction of power transmission lines leads to insufficient distribution of power resources, cannot reasonably operate, causes resource waste, and is one of the fundamental problems of power shortage.
The occurrence of the carbon fiber wire can exactly make up the defects. The carbon fiber composite core wire is made by replacing a steel core in a traditional steel-cored aluminum strand with a composite material core, is a wire for overhead transmission lines with a brand-new concept, and is innovative application of a high-performance composite material in transmission wires. The structure of the carbon fiber composite wire is similar to that of the traditional steel-cored aluminum strand, and the difference is that the carbon fiber composite core is used for replacing the steel-cored steel strand, and the exterior of the carbon fiber composite wire generally adopts the high-conductivity soft aluminum strand. The advanced composite material core wire has the excellent performances of high strength, corrosion resistance, high conductivity, large current-carrying capacity, small linear expansion coefficient, small sag, light weight, long service life and the like, and can effectively meet the higher requirements of energy conservation, safety, environmental protection and economy in the field of power transmission and transformation. The traditional carbon fiber composite core is a resin-based composite material prepared by taking high-performance carbon fibers as a reinforcement and adopting a pultrusion process, wherein the carbon fibers are fibers with the carbon content of 90-100% formed by heat treatment and carbonization of organic fibers such as viscose fibers, polyacrylonitrile fibers or pitch-based fibers in a protective atmosphere. Carbon fibers are often used as reinforcements to be compounded with a matrix of resin, ceramic, metal, etc. to form a composite material. However, the traditional carbon fiber composite core has high brittleness and poor impact performance, can generate micro cracks in the long-term use process, is easy to crack or break, and seriously influences the safe operation of the power transmission line.
The patent with publication number CN104200911B discloses a modified carbon fiber composite core wire core rod, which comprises a thermosetting resin matrix mixed with a developer, wherein reinforced carbon fiber bundles are distributed in the thermosetting resin matrix; wherein the developer is nanoscale heavy metal or heavy metal compound powder; the addition amount of the developer is 3-20% of the mass percentage of the thermosetting resin. The invention also discloses a preparation method of the modified carbon fiber composite core wire core rod, which comprises the following steps: adding a developer into the thermosetting resin, and uniformly mixing; and (3) feeding the carbon fiber bundle into thermosetting resin mixed with a developer to realize impregnation, performing temperature rise and setting at the temperature range of 140-180 ℃ through a preforming die and a forming die, and cooling to obtain a finished product. According to the invention, the carbon fiber composite core wire core rod is developed and modified, so that a better developing effect is obtained in the X-ray nondestructive testing process, and the monitoring on whether the wire core rod is damaged or not in the construction process is facilitated. The core rod is formed by adding a developer into thermosetting resin and impregnating carbon fibers, the thermosetting resin has high brittleness, the carbon fibers also have high brittleness, and therefore the core rod and the carbon fibers are combined, and the problem that the carbon fiber composite core is easy to break cannot be solved.
Patent document with publication number CN107731351A discloses a carbon fiber composite core conductor wire and a preparation method thereof, relating to the technical field of cable conductor materials. The carbon fiber composite core conductor wire comprises a carbon fiber composite core and a metal conducting layer wrapping the carbon fiber composite core, wherein the carbon fiber composite core is prepared from carbon fibers, glass fibers, polyphenylene sulfide nano fibers, phenolic cyanate resin, methyl tetrahydrophthalic anhydride, an anion promoter, a binder and a solvent; the conductor wire has the advantages of high conductivity, large current-carrying capacity, high tensile strength, small relaxation, light weight and high bending strength, is not easy to break when bearing bending stress, and the sectional area of the carbon fiber composite core conductor wire is 1.5 times of that of a conventional wire under the same outer diameter. The composite core has the advantages that the main component of the carbon fiber is directly sprayed and injected with glue, the carbon fiber is not pretreated, and the bonding performance between the carbon fiber and the components such as a bonding agent is poor, so that the comprehensive performance is influenced, the torsional tensile strength is poor, and the service life is short.
Disclosure of Invention
In view of this, the invention provides a core rod of a carbon fiber composite core wire of a power transmission line, which can improve the brittleness of carbon fibers, solve the problem that the conventional carbon fiber composite core is easy to break, and prolong the service life of the wire.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a carbon fiber composite core wire core rod of a power transmission line is prepared from the following raw materials in parts by weight: 30-40 parts of modified carbon fiber, 12-20 parts of glass fiber, 6-12 parts of polyester fiber, 8-15 parts of silicon nitride, 20-28 parts of polyurethane resin, 210 parts of xylene 205-.
Further, the modified carbon fiber is prepared from the following components in parts by weight: 22-30 parts of carbon fiber, 130 parts of ethanol 120-.
Further, the coupling agent is a silane coupling agent.
Further, the coupling agent is KH550 or KH 551.
Further, the curing agent is one of curing agents 703, 704 or 781.
Further, the surfactant is a phosphate type surfactant.
Further, the surfactant is nonylphenol polyoxyethylene ether phosphate or potassium lauryl alcohol ether phosphate.
Further, the preparation method of the carbon fiber composite core wire core rod of the power transmission line comprises the following steps:
s1: respectively twisting modified carbon fibers, glass fibers and polyester fibers by S for 100 twists per meter, then respectively combining 1 fiber, and twisting by Z for 100 twists per meter to prepare a composite fiber wire;
s2: mixing epoxy resin, polyurethane resin and a curing agent, stirring at the rotation speed of 200-300r/min for 30-60s at normal temperature, then adding silicon nitride, dimethylbenzene and a surfactant, and continuously stirring for 3-5min while keeping the rotation speed unchanged to obtain a mixed solution;
s3: adding the composite fiber wire obtained in the step S1 into the mixed solution obtained in the step S2 for dipping;
s4: and (4) performing the composite fiber wire impregnated in the step S3 in a performing mold, then forming the composite fiber wire by a forming mold and heating for shaping, and then cooling, drawing and rolling the composite fiber wire at the outlet of the mold.
For a long time, the traditional overhead transmission conductor mainly uses steel-cored aluminum stranded wires, and in order to improve the corrosion resistance, aluminum-clad steel-cored aluminum stranded wires and the like are developed. Steel-cored aluminum alloy strands, all-aluminum alloy strands, aluminum-clad steel-cored aluminum alloy strands, and the like have been developed for the purpose of improving strength, and various heat-resistant aluminum alloy wires have been developed for the purpose of improving heat resistance and conveying capacity of the wires. In the last 90 s, the core material of the lead is made of carbon fiber composite materials instead of metal materials, and a certain result is achieved, so that several composite core leads made of composite materials are developed. In the field of novel composite core wires, it was first proposed as an improved low-sag wire; in the 90 s of the 20 th century, Japanese scholars studied to replace steel cores with carbon fiber cores, and developed a novel composite material composite core wire, namely a carbon fiber core aluminum stranded wire. The wire has the same outer diameter and strength as the common steel-cored aluminum stranded wire, and special machines and methods are not needed in the stringing construction. In the wire, the steel core of the common steel-cored aluminum strand is replaced by a composite material core wire made of carbon fiber, and the wire is an epoch-making novel wire with light weight, small linear expansion coefficient and good relaxation property. Therefore, as can be seen from the development of the wire, the carbon fiber core can replace the steel core, mainly because the carbon fiber core has the advantages of light weight and low sag. The novel overhead transmission line conductor is researched by all countries to replace the traditional steel-cored aluminum strand, the carbon fiber composite core conductor has high tensile strength and low sag, the tower span can be increased, the tower height can be reduced, and the engineering cost can be reduced. The lead has high operating temperature and large effective through-flow section, not only can realize current-carrying capacity multiplication, but also can reduce the ice coating amount of the lead; in addition, the carbon fiber wire is a composite material core, has light weight and corrosion resistance, can reduce the wire weight and the magnetic loss of the circuit, and is suitable for the circuit application in a heavy corrosion area.
Furthermore, those skilled in the art have long studied the high strength, small sag, high temperature resistance, etc. of the carbon fiber composite core wire, but have paid little attention to the influence of the defects of the carbon fibers on the composite core. For example: mechanical property research of a composite carbon fiber core wire of the old tiger, the Yunmin, the Niumuqiang, 2016,11,20: 275. the composite material wire core produced by taking carbon fiber as a reinforcing material of the wire and combining a modern pultrusion technology is externally twisted with an aluminum alloy wire to prepare the overhead wire. The research results are as follows: compared with a steel core soft aluminum stranded wire, the carbon fiber composite core wire has an inflection point when the sag is about 80 ℃, the sag increase of the carbon fiber composite core wire is large before 80 ℃, and the sag increase of the carbon fiber composite core wire is small after 80 ℃, so that the balance is achieved. The temperature-sag increment of the steel-cored soft aluminum strand has larger change amplitude, and is larger than the sag of the carbon fiber composite core wire. For another example, patent document CN103413629A discloses a method for manufacturing a carbon fiber composite core for a power transmission line, which only improves the mechanical properties of the composite core to a certain extent by improving the process, and only combines carbon fiber and glass fiber simply, thereby failing to effectively solve the technical problem that carbon fiber is easy to break and having a short service life. The carbon fiber composite core is produced by compounding carbon fiber, glass fiber and epoxy resin, and the brittleness of the carbon fiber composite core, the glass fiber and the epoxy resin is large, so that the composite core is also large in brittleness and easy to break. Those skilled in the art will appreciate that this is due to the nature of the raw material itself, which is inexpensive to manufacture and is renewed when they want to break. However, each maintenance and replacement involves a heavy workload on the operator. The inventor of the application is in order to reduce the workload of operators and ensure the electricity utilization safety of users, the raw materials and the preparation method of the carbon fiber composite core are studied with great concentration for many years, the raw materials are used, the carbon fiber, the glass fiber and the polyester fiber are combined with organic matters and inorganic matters, all the components have synergistic effects, the advantages are complementary, the composite core has better toughness, certain deformation can be generated after stress, the condition of direct fracture is avoided, the tensile and compressive performances of the composite core are improved, the service life of a wire is prolonged, the frequency of overhauling and replacing the wire is reduced, and the safe operation of a power transmission line is ensured.
The invention has the beneficial effects that:
the carbon fiber is a novel fiber material of high-strength and high-modulus fiber with the carbon content of more than 95 percent, and has the advantages of high axial strength and modulus, low density, high specific performance, no creep, ultrahigh temperature resistance in a non-oxidation environment, good fatigue resistance, small thermal expansion coefficient, good corrosion resistance and the like. Although the strength is high, the carbon fiber is a brittle material, and the carbon fiber cannot deform under overlarge stress and directly breaks, so that the carbon fiber cannot be repaired basically after being damaged and only can be replaced. The glass fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, but is brittle and has poor wear resistance. Therefore, the composite fiber wire is compounded by the polyester fiber, the polyester fiber has good wrinkle resistance and shape retention, higher strength and elastic recovery capability, firmness and durability, and excellent wrinkle resistance, elasticity and dimensional stability, and the composite fiber wire is prepared by the polyester fiber, the polyester fiber and the elastic recovery capability, and is used together to improve the mechanical strength and the toughness of the composite core. And silicon nitride with high strength is added, so that the material has excellent heat shock resistance, oxidation resistance, wear resistance and corrosion resistance, and the mechanical property of the material is improved. The polyurethane resin is matched with the epoxy resin, so that the elasticity of the material is enhanced, the brittleness of the epoxy resin is improved, and the material is deformed instead of being directly broken after being stressed. Curing agents 703, 704 or 781 are used in combination with epoxy resin, and surfactants nonylphenol polyoxyethylene ether phosphate or potassium laureth phosphate enhance the compatibility of epoxy resin and polyurethane resin with carbon fibers, glass fibers and polyester fibers, and maintain the stability of the system.
The carbon fiber composite core wire core rod of the power transmission line has good comprehensive performance: the surface of the core rod is round, smooth and smooth, the color is consistent, no defect exists, the tensile strength is more than 2663MPa, the elastic modulus is more than 130GPa, the core rod is wound on a cylinder body with the diameter of 55D for 1 circle at the winding speed of not more than 3r/min, the core rod does not crack or break, the radial pressure resistance performance test is carried out, the pressure of not less than 30KN is borne, and the end part does not crack or peel. And in a 360-degree torsion test, the surface layer is not cracked, and the tensile strength after torsion reaches over 2511 MPa.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Table 1 examples 1-8 parts by weight of each raw material of the carbon fiber composite core wire mandrel
TABLE 2 examples 1-8 parts by weight of each raw material of modified carbon fiber
Example 1
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 550. The curing agent is curing agent 703. The surfactant is nonylphenol polyoxyethylene ether phosphate.
The preparation method of the carbon fiber composite core wire core rod of the power transmission line comprises the following steps:
s1: respectively twisting modified carbon fibers, glass fibers and polyester fibers by S for 100 twists per meter, then respectively combining 1 fiber, and twisting by Z for 100 twists per meter to prepare a composite fiber wire;
s2: mixing epoxy resin, polyurethane resin and a curing agent, stirring at the normal temperature of 200r/min for 60s, then adding silicon nitride, dimethylbenzene and a surfactant, keeping the rotating speed unchanged, and continuing stirring for 5min to obtain a mixed solution;
s3: adding the composite fiber wire obtained in the step S1 into the mixed solution obtained in the step S2 for soaking for 2 hours;
s4: and (2) performing the composite fiber wire impregnated in the step S3 in a performing die, then performing forming at 120 ℃ and heating to set, wherein two temperature control areas are arranged in the forming die and are respectively at 150 ℃ and 170 ℃, and the heating setting temperature is 190 ℃, and then cooling, drawing and winding at the outlet of the die.
Example 2
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 550. The curing agent is curing agent 704. The surfactant is potassium lauryl alcohol ether phosphate.
The preparation method of the carbon fiber composite core wire core rod of the power transmission line comprises the following steps:
s1: respectively twisting modified carbon fibers, glass fibers and polyester fibers by S for 100 twists per meter, then respectively combining 1 fiber, and twisting by Z for 100 twists per meter to prepare a composite fiber wire;
s2: mixing epoxy resin, polyurethane resin and a curing agent, stirring at the rotating speed of 250r/min for 45s at normal temperature, then adding silicon nitride, dimethylbenzene and a surfactant, keeping the rotating speed unchanged, and continuously stirring for 4min to obtain a mixed solution;
s3: adding the composite fiber wire obtained in the step S1 into the mixed solution obtained in the step S2 for soaking for 2 hours;
s4: and (3) performing the composite fiber wire impregnated in the step S3 in a performing die, then performing forming at 125 ℃ by using a forming die and heating to set, wherein two temperature control areas are arranged in the forming die and are respectively at 155 ℃ and 175 ℃, and the heating setting temperature is 195 ℃, and then cooling, drawing and winding at the outlet of the die.
Example 3
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 551. The curing agent is curing agent 703. The surfactant is nonylphenol polyoxyethylene ether phosphate.
The preparation method of the carbon fiber composite core wire core rod of the power transmission line comprises the following steps:
s1: respectively twisting modified carbon fibers, glass fibers and polyester fibers by S for 100 twists per meter, then respectively combining 1 fiber, and twisting by Z for 100 twists per meter to prepare a composite fiber wire;
s2: mixing epoxy resin, polyurethane resin and a curing agent, stirring at the rotating speed of 300r/min for 30s at normal temperature, then adding silicon nitride, dimethylbenzene and a surfactant, keeping the rotating speed unchanged, and continuously stirring for 3min to obtain a mixed solution;
s3: adding the composite fiber wire obtained in the step S1 into the mixed solution obtained in the step S2 for soaking for 2 hours;
s4: and (3) performing the composite fiber wire impregnated in the step S3 in a performing die, then performing forming at a forming temperature of 130 ℃, heating to form at a temperature of 160 ℃ and 180 ℃ respectively, cooling at a die outlet, drawing, and rolling.
Example 4
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 551. The curing agent is curing agent 704. The surfactant is potassium lauryl alcohol ether phosphate.
The preparation method of the carbon fiber composite core wire core rod for the power transmission line is the same as that in the embodiment 1.
Example 5
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 550. The curing agent is curing agent 781. The surfactant is nonylphenol polyoxyethylene ether phosphate.
The preparation method of the carbon fiber composite core wire core rod for the power transmission line is the same as that in the embodiment 1.
Example 6
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 550. The curing agent is curing agent 781. The surfactant is potassium lauryl alcohol ether phosphate.
The preparation method of the carbon fiber composite core wire core rod of the power transmission line is the same as that in the embodiment 2.
Example 7
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 551. The curing agent is curing agent 704. The surfactant is nonylphenol polyoxyethylene ether phosphate.
The preparation method of the carbon fiber composite core wire core rod of the power transmission line is the same as that in the embodiment 2.
Example 8
The embodiment provides a carbon fiber composite core wire core rod for a power transmission line, which is prepared from the raw materials in parts by weight shown in tables 1 and 2. Wherein the coupling agent is KH 551. The curing agent is curing agent 781. The surfactant is potassium lauryl alcohol ether phosphate.
The preparation method of the carbon fiber composite core wire core rod for the power transmission line is the same as that in the embodiment 3.
In embodiments 1 to 8 of the present invention, the preparation method of the modified carbon fiber comprises: mixing deionized water and a coupling agent to obtain a mixture, sequentially soaking carbon fibers in ethanol, a 5% nitric acid aqueous solution and the mixture for 3min, 3min and 4min, drying in a drying device at 140 ℃ for 2h, and introducing argon.
The carbon fiber is sequentially soaked in an ethanol and nitric acid aqueous solution to remove impurities on the surface of the carbon fiber, an acid environment is created at the same time, and the carbon fiber is soaked in a mixture of deionized water and a coupling agent to accelerate the modification rate of the coupling agent to the carbon fiber. After the carbon fibers are modified, the bonding performance between the carbon fibers and epoxy resin and polyurethane resin is enhanced, load can be better transferred, and the strength and the elastic modulus of the composite fibers are improved.
The carbon fiber of the invention: the density is 1.79-1.81g/cm3The tensile strength is 5-5.8 Gpa, the elongation is 1.8-2%, and the tensile modulus is 280-294 Gpa; glass fiber: the density is 2.53-2.62g/cm3The tensile strength is 4020-; polyester fiber: the density is 1.37-1.41g/cm3The tensile strength is 19.4-22.9cN/dtex, the elongation is 2.4-3.8%, and the tensile modulus is 528-774 cN/dtex.
Comparative example 1
The comparative example provides a carbon fiber composite core wire core rod for a power transmission line, and is different from the embodiment 1 in that carbon fibers are not modified.
Comparative example 2
The comparative example provides a core rod of a carbon fiber composite core wire of a power transmission line, and is different from the example 1 in that the comparative example does not contain a surfactant.
Comparative example 3
The comparative example provides a core rod of a carbon fiber composite core wire of a power transmission line, and is different from the example 1 in that the comparative example does not contain polyurethane resin.
Comparative example 4
The comparative example provides a core rod of a carbon fiber composite core wire of a power transmission line, and is different from the example 1 in that polyester fibers are not contained in the comparative example.
Test method
The power transmission line carbon fiber composite core wire core rods of the embodiments 1 to 8 and the comparative examples 1 to 4 are subjected to performance tests and executed according to the GB/T29324-2012 standard.
Table 3 test results of carbon fiber composite core wire core rods for power transmission lines of examples 1 to 8 and comparative examples 1 to 4
With reference to table 3, the performance of the carbon fiber composite core wire core rods of the power transmission lines of examples 1 to 8 and comparative examples 1 to 4 of the invention is tested, and the carbon fiber composite core wire core rods of the power transmission lines of examples 1 to 8 all show good comprehensive performance: the surface of the core rod is round, smooth and smooth, the color is consistent, no defect exists, the tensile strength is more than 2663MPa, the elastic modulus is more than 130GPa, the core rod is wound on a cylinder body with the diameter of 55D for 1 circle at the winding speed of not more than 3r/min, the core rod does not crack or break, the radial pressure resistance performance test is carried out, the pressure of not less than 30KN is borne, and the end part does not crack or peel. And in a 360-degree torsion test, the surface layer is not cracked, and the tensile strength after torsion reaches over 2511 MPa. The carbon fiber is not modified in the comparative example 1, the comprehensive performance of the mandrel is poor, the surfactant is not contained in the comparative example 2, the polyurethane resin is not contained in the comparative example 3, the polyester fiber is not contained in the comparative example 4, and the performance of the mandrel is reduced to some extent, so that the tensile and compressive properties of the mandrel can be effectively improved, and the service life of the mandrel is prolonged.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a transmission line carbon fiber composite core wire plug which characterized in that: the feed is prepared from the following raw materials in parts by weight: 30-40 parts of modified carbon fiber, 12-20 parts of glass fiber, 6-12 parts of polyester fiber, 8-15 parts of silicon nitride, 20-28 parts of polyurethane resin, 210 parts of xylene 205-;
the preparation method of the carbon fiber composite core wire core rod of the power transmission line comprises the following steps:
s1: respectively twisting modified carbon fibers, glass fibers and polyester fibers by S for 100 twists per meter, then respectively combining 1 fiber, and twisting by Z for 100 twists per meter to prepare a composite fiber wire;
s2: mixing epoxy resin, polyurethane resin and a curing agent, stirring at the rotation speed of 200-300r/min for 30-60s at normal temperature, then adding silicon nitride, dimethylbenzene and a surfactant, and continuously stirring for 3-5min while keeping the rotation speed unchanged to obtain a mixed solution;
s3: adding the composite fiber wire obtained in the step S1 into the mixed solution obtained in the step S2 for dipping;
s4: and (4) performing the composite fiber wire impregnated in the step S3 in a performing mold, then forming the composite fiber wire by a forming mold and heating for shaping, and then cooling, drawing and rolling the composite fiber wire at the outlet of the mold.
2. The carbon fiber composite core wire core rod of the power transmission line of claim 1, characterized in that: the modified carbon fiber is prepared from the following components in parts by weight: 22-30 parts of carbon fiber, 130 parts of ethanol 120-.
3. The carbon fiber composite core wire core rod of the power transmission line of claim 2, characterized in that: the coupling agent is a silane coupling agent.
4. The carbon fiber composite core wire core rod of the power transmission line of claim 3, wherein: the coupling agent is KH550 or KH 551.
5. The carbon fiber composite core wire core rod of the power transmission line of claim 1, characterized in that: the curing agent is one of curing agents 703, 704 or 781.
6. The carbon fiber composite core wire core rod of the power transmission line of claim 1, characterized in that: the surfactant is a phosphate ester surfactant.
7. The carbon fiber composite core wire core rod of the power transmission line of claim 6, wherein: the surfactant is nonylphenol polyoxyethylene ether phosphate or potassium lauryl alcohol ether phosphate.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61129607A (en) * | 1984-11-28 | 1986-06-17 | Sumitomo Electric Ind Ltd | Production of optical fiber cable strengthened with reinforced plastics |
| CN1968907A (en) * | 2004-06-18 | 2007-05-23 | 欧文斯科尔宁格公司 | Epoxy sizing composition for filament winding |
| CN103643503A (en) * | 2013-11-25 | 2014-03-19 | 中国科学院山西煤炭化学研究所 | Processing method for silane coupling agent modified carbon fiber surface |
| CN104851497A (en) * | 2015-05-19 | 2015-08-19 | 山东大学 | Three-layer concentric high-performance fiber composite material cable core rod and manufacturing method thereof |
-
2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61129607A (en) * | 1984-11-28 | 1986-06-17 | Sumitomo Electric Ind Ltd | Production of optical fiber cable strengthened with reinforced plastics |
| CN1968907A (en) * | 2004-06-18 | 2007-05-23 | 欧文斯科尔宁格公司 | Epoxy sizing composition for filament winding |
| CN103643503A (en) * | 2013-11-25 | 2014-03-19 | 中国科学院山西煤炭化学研究所 | Processing method for silane coupling agent modified carbon fiber surface |
| CN104851497A (en) * | 2015-05-19 | 2015-08-19 | 山东大学 | Three-layer concentric high-performance fiber composite material cable core rod and manufacturing method thereof |
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