A cable and a method for preparing the same

Abstract

The present disclosure provides a cable and a preparation method thereof. The cable is a fiber-reinforced composite cable, the cable comprising a cable body and an anchor, and the anchor is located at the end of the cable body; wherein the cable body comprises a fiber material and a photocurable resin in a mass ratio of 1:0.12-1.14, and the anchor comprises a fiber material and a thermosetting resin in a mass ratio of 1:0.56-2.2. The cable body of the cable provided by the present disclosure is formed by a pultrusion process of a fiber material and a photocurable resin to meet the length requirement of the cable, and the anchor of the cable body is formed by a fiber material and a thermosetting resin by resin transfer molding to meet the high-strength mechanical property requirement of the anchor. The cable has high specific strength and specific modulus, good fatigue resistance, and the structure of the cable is integrally formed, which avoids the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables.

Description

Technical Field

[0001] The present disclosure relates to the field of composite material molding, and in particular to a cable and a preparation method thereof. Background Art

[0002] Steel strands used in bridges, photovoltaic flexible brackets, marine engineering and other fields have problems such as easy corrosion, heavy weight, and poor fatigue performance, which not only reduces the service life of such cable structures, but also brings great safety hazards. Composite cable structures have excellent corrosion resistance, high specific strength and specific modulus, and good fatigue resistance. Therefore, they have attracted widespread attention in the field of cable structures and are currently being used in bridges, marine engineering and other fields.

[0003] However, the composite cable structure needs to be anchored and connected to the metal heterostructure. There is not only a high stress concentration problem between the composite cable body and the metal parts, which can easily lead to the risk of cable body fracture failure, but also wear and tear under long-term vibration, thereby reducing the performance of the cable body. The traditional anchoring system of composite cables adopts clamping or gluing. When subjected to high loads, the connection part usually fails. Summary of the invention

[0004] In order to solve the problems existing in the related art, the present disclosure provides a cable and a preparation method thereof.

[0005] According to a first aspect of the present disclosure, a cable is provided, which is a fiber-reinforced composite cable, comprising a cable body and an anchor, wherein the anchor is located at an end of the cable body; wherein the cable body comprises a fiber material and a photocurable resin in a mass ratio of 1:0.12-1.14, and the anchor comprises the fiber material and a thermosetting resin in a mass ratio of 1:0.56-2.2.

[0006] In some embodiments of the present disclosure, in the anchor, along the length direction of the cable, the thickness of the fiber material increases according to a preset rule.

[0007] In some embodiments of the present disclosure, the cable body includes a first fiber material; the first fiber material extends to the anchor, and the anchor also includes a second fiber material, and the first fiber material and the second fiber material form a woven structure.

[0008] In some embodiments of the present disclosure, the mass ratio per unit area of ​​the first fiber material and the second fiber material is 1:0.8-8.5.

[0009] In some embodiments of the present disclosure, the anchor occupies 4%-20% of the length of the cable.

[0010] In some embodiments of the present disclosure, the fiber material includes at least one of carbon fiber, glass fiber, and basalt fiber;

[0011] The photocurable resin includes at least one of epoxy acrylate resin and polyurethane acrylate resin;

[0012] The thermosetting resin includes at least one of phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, epoxy resin, unsaturated resin, polyurethane and polyimide.

[0013] According to a second aspect of the present disclosure, a method for preparing a cable is provided, wherein the method is used to prepare the cable as described above, and the method comprises:

[0014] The cable body is prepared by light-curing pultrusion;

[0015] placing the end of the cable body in a chemical degradation liquid for degradation, so that the first fiber material of the end of the cable body is exposed;

[0016] Weaving the first fiber material exposed at the end of the cable body with the second fiber material;

[0017] The braided end of the cable body is molded by resin transfer molding to form an anchor at the end of the cable body to obtain the cable.

[0018] In some embodiments of the present disclosure, the cable body is prepared by photocuring pultrusion, including:

[0019] Using the first fiber material, photocurable resin, monomer and photoinitiator as raw materials, a preset number of fiber-reinforced composite material rods are extruded simultaneously by photocuring pultrusion;

[0020] Twisting a preset number of the fiber-reinforced composite material rods to obtain a twisted body;

[0021] The predetermined part of the twisted body is coated with thermoplastic resin to obtain a rope body; the predetermined part includes a part except the end of the twisted body, and the length of the end accounts for 4%-20% of the length of the twisted body.

[0022] In some embodiments of the present disclosure, the step of weaving the first fiber material exposed at the end of the cable body with a second fiber material comprises:

[0023] The exposed first fiber material is used as the warp structure, and the second fiber material is used as the weft structure, and the exposed first fiber material and the second fiber material are woven warp and weft to form a woven structure; wherein, in the direction from the cable body to the anchor, the thickness of the woven structure increases according to a preset rule.

[0024] In some embodiments of the present disclosure, the monomer includes at least one of isobornyl acrylate, ethoxylated oxyphenyl acrylate, dipropylene glycol diacrylate, hexanediol diacrylate, and trimethylolpropane triacrylate; and / or,

[0025] The photoinitiator includes at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester, 2-dimethylamino-2-benzyl-1-[4-(4-morpholinyl)phenyl]-1-butanone, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone and methyl benzoylformate; and / or

[0026] The concentration of the chemical degradation liquid is 3.7%-20.5%, and the chemical degradation liquid includes an acidic catalyst or a basic catalyst;

[0027] The acidic catalyst includes at least one of p-toluenesulfonic acid, acetic acid, phosphotungstic acid, trifluoroacetic acid, and trifluoromethanesulfonic acid;

[0028] The alkaline catalyst includes at least one of 4-dimethylaminopyridine, tert-butylimino-tri(pyrrolidine)phosphine, 1,8-diazabicyclo[5.4.0]undec-7-ene, and 1,5,7-triazabicyclo[4,4,0]dec-5-ene.

[0029] The beneficial effects of the present disclosure include but are not limited to: the cable body of the cable provided by the present disclosure is formed by a pultrusion process of a fiber material and a photocurable resin with a mass ratio of 1:0.12-1.14 to meet the length requirements of the cable. The anchor of the cable body is formed by a resin transfer molding method of a fiber material and a thermosetting resin with a mass ratio of 1:0.56-2.2 to meet the high-strength mechanical performance requirements of the anchor. The cable has high specific strength and specific modulus, good fatigue resistance, and the structure of the cable is integrally formed, which avoids the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present disclosure and are used together with the description to explain the principles of the embodiments of the present disclosure. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present disclosure, rather than all embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a schematic diagram of one end of a cable according to an exemplary embodiment of the present disclosure;

[0033] Figure 2 is a schematic top view of one end of a cable according to an exemplary embodiment of the present disclosure;

[0034] Figure 3 The present invention is a schematic diagram of a process for preparing a cable according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the technical solution of the present disclosure will be clearly and completely described in combination with the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other without conflict.

[0036] Composite cable structures need to be anchored and connected to metal heterogeneous structures. There is not only a high stress concentration problem between the composite cable body and the metal parts, which easily leads to the risk of cable body fracture failure, but also wear and tear under long-term vibration, thereby reducing the performance of the cable body. Traditional composite cable anchoring systems are clamped or glued. When subjected to high loads, the connection parts usually fail.

[0037] In order to solve the above technical problems, an exemplary embodiment of the present disclosure provides a cable, which is a fiber-reinforced composite cable. The cable includes a cable body and an anchor, and the anchor is located at the end of the cable body; wherein the cable body includes a fiber material and a photocurable resin in a mass ratio of 1:0.12-1.14, and the anchor includes a fiber material and a thermosetting resin in a mass ratio of 1:0.56-2.2.

[0038] The cable provided by the exemplary embodiment of the present disclosure is formed by a pultrusion process of a fiber material and a photocurable resin with a mass ratio of 1:0.12-1.14 to meet the length requirement of the cable body. In order to meet the high-strength mechanical performance requirements of the anchor, the anchor is formed by a resin transfer molding method of a fiber material and a thermosetting resin with a mass ratio of 1:0.56-2.2. The cable is a fiber-reinforced composite cable with high specific strength and specific modulus, good fatigue resistance, and the structure of the cable is integrally formed, avoiding the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables.

[0039] In this embodiment, the mass ratio of the fiber material to the photocurable resin in the cable body is 1:0.12-1.14, for example, 1:0.12, 1:0.75 or 1:1.14. Within this mass range, the bendability and mechanical strength of the cable can be guaranteed when it is used too heavy. Preferably, the mass ratio of the fiber material to the photocurable resin in the cable body is 1:0.31-0.80, for example, 1:0.31, 1:0.52 or 1:0.80. Within the mass range of 1:0.31-0.80, the fatigue resistance of the cable can be guaranteed without excessively increasing the unit weight of the cable body itself.

[0040] In this embodiment, the mass ratio of the fiber material and the thermosetting resin in the anchor is 1:0.56-2.2. For example, it can be 1:0.56, 1:1.5 or 1:2.2. Within this mass range, the shear strength of the anchor can be guaranteed, and the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables can be avoided. Preferably, the mass ratio of the fiber material and the thermosetting resin in the anchor is 1:1.05-1.8, for example, it can be 1:1.05, 1:1.25 or 1:1.8. The mass ratio of the fiber material and the thermosetting resin is within the mass range of 1:1.05-1.8, which can ensure that the fiber material in the anchor is fully infiltrated with the thermosetting resin to form an integrally formed anchor, and the connection between the anchor and the cable body is also integrally formed, and its bonding strength is high, which avoids the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables.

[0041] In an exemplary embodiment provided by the present disclosure, in the anchor, the thickness of the fiber material increases according to a preset rule along the length direction of the cable.

[0042] During the use of the cable, the stress at the anchor is relatively concentrated. Therefore, in this embodiment, along the length direction of the cable, the thickness of the fiber material in the anchor increases according to a preset rule. Figure 1 As shown, the number of layers of fiber material in the anchor can gradually increase from the cable body 10 to the end of the anchor 20, that is, from the inside to the outside of the anchor 20 (refer to Figure 2The length of the fiber material decreases layer by layer in the direction in which the cable extends (the direction pointed by the four arrows in the top view of one end of the cable). This increases the thickness of the fiber material in the direction from the cable body 10 to the end of the anchor 20, and improves the interlayer shear strength, thereby improving the fatigue resistance and reliability of the anchor 20 during the use of the cable.

[0043] In an exemplary embodiment provided by the present disclosure, the cable body includes a first fiber material; the first fiber material extends to the anchor, and the anchor further includes a second fiber material, and the first fiber material and the second fiber material form a braided structure.

[0044] In the present embodiment, the cable body is formed by a first fiber material and a photocurable resin through a pultrusion process. The first fiber material extends to the anchor. The first fiber material is used as the warp structure, and the second fiber material is used as the weft structure. The first fiber material and the second fiber material are woven together to form a woven structure. In this way, the connection between the cable body and the anchor is equivalent to one-piece molding. The connection structure is firm, avoiding the problem of breakage caused by stress concentration at the end of the cable body in traditional cables.

[0045] In an exemplary embodiment provided by the present disclosure, the mass ratio per unit area of ​​the first fiber material to the second fiber material is 1:0.8-8.5.

[0046] For example Figure 1 As shown, the thickness of the fiber material in the anchor increases according to a preset rule along the length direction of the cable. Therefore, in the anchor, the further away from the cable body, the more mass per unit area of ​​the woven second fiber material is, so as to improve the interlaminar shear strength of the anchor end, such as Figure 1 The direction indicated by the arrow in the middle indicates that the closer to the cable body, the less mass per unit area of ​​the woven second fiber material, so as to transition to the surface tangent at the connection between the anchor and the cable body, forming a gradual cross-section, so as to effectively transfer stress and reduce damage to the connection area. Therefore, in this embodiment, the mass per unit area ratio of the first fiber material to the second fiber material is limited to 1:0.8-8.5.

[0047] In the exemplary embodiment provided by the present disclosure, the anchorage accounts for 4%-20% of the length of the cable. The length ratio of the anchorage to the cable can be set according to the actual use requirements of the cable. For example, when the use scenario of the cable requires increasing the length of the anchorage, the length ratio of the anchorage to the cable is increased. Conversely, when the use scenario of the cable requires reducing the length of the anchorage, the length ratio of the anchorage to the cable is reduced. In this embodiment, the length ratio of the anchorage to the cable is limited to 4%-20%, which can meet the design requirements of the cable while ensuring the strength of the anchorage, thereby ensuring the fatigue resistance and reliability of the cable during use.

[0048] In the exemplary embodiment provided by the present disclosure, the fiber material includes at least one of carbon fiber, glass fiber and basalt fiber. The type of fiber material can be selected according to the mechanical property requirements or design requirements of the cable, for example, a single carbon fiber, a single glass fiber or a single basalt fiber can be selected, and a mixed fiber material of carbon fiber and glass fiber, or a mixed fiber material of glass fiber and basalt fiber can also be selected.

[0049] In the exemplary embodiment provided by the present disclosure, the light-curable resin includes at least one of epoxy acrylate resin and polyurethane acrylate resin. The type of light-curable resin can be selected according to the mechanical property requirements or design requirements of the cable, for example, a single epoxy acrylate resin or a single polyurethane acrylate resin can be selected, or both epoxy acrylate resin and polyurethane acrylate resin can be selected.

[0050] In the exemplary embodiment provided by the present disclosure, the thermosetting resin includes at least one of phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, epoxy resin, unsaturated resin, polyurethane and polyimide. The type of thermosetting resin can be selected according to the mechanical property requirements or design requirements of the cable, for example, a single phenolic resin, a single urea-formaldehyde resin or a single melamine-formaldehyde resin can be selected, a mixed resin of phenolic resin and urea-formaldehyde resin can be selected, or a mixed resin of epoxy resin, unsaturated resin and polyurethane can be selected.

[0051] The exemplary embodiment of the present disclosure provides a method for preparing a cable, the method is used to prepare the cable as described above, Figure 3 As shown, the preparation method comprises:

[0052] S100, preparing a cable body by photocuring pultrusion.

[0053] The cable body is prepared by light-curing pultrusion, and can be cut after pultrusion according to the application and design requirements of the cable body, so that the cable body of any length can be prepared to meet the length requirements of the cable.

[0054] S200, placing the end of the cable body in a chemical degradation liquid for degradation, so that the first fiber material at the end of the cable body is exposed.

[0055] After extrusion molding and cutting by light-curing pultrusion molding, a cable body that meets the length requirements can be obtained. The end of the cable body is placed in a chemical degradation liquid, the temperature is controlled at 80-150°C, and it is taken out after standing for 30-120 minutes to obtain a cable body with an uncured end and exposed first fiber material. The exposed first fiber material is washed with ethanol and then dried. The end of the cable body is then re-molded by resin transfer molding.

[0056] S300, weaving the first fiber material exposed at the end of the cable body with the second fiber material.

[0057] The end of the cable body is placed in a chemical degradation liquid to degrade the photocurable resin at the end of the cable body, thereby exposing the first fiber material at the end of the cable body. The exposed first fiber material at the end of the cable body is then woven with a second fiber material to increase the mechanical strength of the cable body after re-molding. This can avoid the problem of stress concentration at the end of the cable body in traditional cables that is prone to breakage.

[0058] S400, molding the ends of the braided cable body by resin transfer molding to form anchors at the ends of the cable body to obtain a cable.

[0059] After the first fiber material exposed at the end of the cable body is braided with the second fiber material, the end of the cable body is reinforced by the braiding of the fiber material, and its mechanical strength is improved. The fibers at the end of the cable body after braiding are molded with thermosetting resin by resin transfer molding. The thermosetting resin has high specific strength and specific modulus and good fatigue resistance. The molding method of resin transfer molding is one-piece molding to form an anchor. Accordingly, the connection between the anchor and the cable body is achieved by one-piece molding, and the bonding strength is high, which avoids the problem of easy fracture due to stress concentration at the end of the cable body in traditional cables.

[0060] It should be noted that, in the process of molding the fibers of the braided cable end with the thermosetting resin by resin transfer molding, when the braided cable end is placed in the molding mold, a portion of the cable body adjacent to the cable end can be placed in the molding mold together, for example, the cable body of 10-100 mm adjacent to the cable end is placed in the molding mold for vacuum infusion molding with thermosetting resin. The molding mold can be selected in different shapes according to the application and design requirements of the cable, so the cable provided by the embodiment of the present disclosure can realize diversified structural design.

[0061] The cable provided in this exemplary embodiment is prepared by photocuring pultrusion to meet the length requirements of the cable. The end of the cable body is chemically degraded to expose the first fiber material, and the second fiber material is used for weaving, so that the end of the cable body is reinforced by weaving the fiber material, and the mechanical strength is improved. The fibers at the end of the cable body after weaving are molded with thermosetting resin by resin transfer molding. The thermosetting resin has high specific strength and specific modulus and good fatigue resistance. The molding method of resin transfer molding is one-piece molding to form an anchor. Accordingly, the connection between the anchor and the cable body is achieved by one-piece molding, and the bonding strength is high, which avoids the problem of easy breakage due to stress concentration at the end of the cable body in traditional cables.

[0062] In the exemplary embodiment provided by the present disclosure, the cable body is prepared by photocuring pultrusion in step S100, including:

[0063] S110, using the first fiber material, photocurable resin, monomer and photoinitiator as raw materials, and simultaneously extruding a preset number of fiber-reinforced composite material rods by photocuring pultrusion.

[0064] The cable body can be prepared by photocuring pultrusion, and can be cut after pultrusion according to the application and design requirements of the cable body, so that a cable body of any length can be prepared to meet the length requirements of the cable. In the prepared fiber-reinforced composite rod, the mass ratio of the first fiber material and the photocurable resin is 1:0.12-1.14. Within this mass ratio range, the bendability and mechanical strength of the cable can be guaranteed during heavy use. Preferably, the mass ratio of the first fiber material and the photocurable resin is 1:0.31-0.80. Within this mass range, the fatigue resistance of the cable can be guaranteed without excessively increasing the unit weight of the cable body itself. Among them, the extrusion rate of photocuring pultrusion can be 5-15m / min, and the fiber-reinforced composite rod can be extruded quickly and continuously.

[0065] When preparing a fiber-reinforced composite material rod with the first fiber material, photocurable resin, monomer and photoinitiator as raw materials, the amount of photocurable resin can be 40-160 parts by mass, the amount of monomer can be 20-30 parts by mass, the amount of photoinitiator can be 1-3 parts by mass, and other additives such as toughening agents, UV aging agents, and anti-hydrolysis agents can be added, and the amount of other additives can be 5-10 parts.

[0066] There are two modes of photocuring pultrusion. One is pure photocuring. The initiator in the raw materials of photocuring pultrusion only includes photoinitiator. The resin can be cured by a UV light source such as high-pressure mercury lamp, metal halide lamp, electrodeless lamp or xenon lamp. The distribution length of the UV light source is 0.5-1 meter. The time for the fiber reinforced composite rod to be cured by the light source is 5-120 seconds. The other is dual photo-thermal initiation. When the initiator in the raw materials of photocuring pultrusion includes both photoinitiator and thermal initiator, the thermal initiation temperature is 100-150℃.

[0067] S120, twisting a preset number of fiber reinforced composite material rods to obtain a twisted body.

[0068] The preset number of fiber reinforced composite rods extruded at the same time are twisted to improve the strength of the cable body. The preset number of twisted fiber reinforced composite rods can be 3-100, which can be selected according to the application and design requirements of the cable. For example, when the application scenario of the cable has a high strength requirement, the preset number of twisted fiber reinforced composite rods can be increased to improve the strength of the cable body. When the application scenario of the cable has a low strength requirement, the preset number of twisted fiber reinforced composite rods can be reduced to reduce the weight of the cable body itself.

[0069] S130, coating a preset portion of the twisted body with a thermoplastic resin to obtain a cable body; the preset portion includes a portion other than an end portion of the twisted body, and the length of the end portion accounts for 4%-20% of the length of the twisted body.

[0070] After twisting a preset number of fiber reinforced composite rods to obtain a twisted body, a surface of a preset portion of the twisted body is coated with a thermoplastic resin, for example, by impregnating the thermoplastic resin and then curing the thermoplastic resin. Thermoplastic resin has good resistance to ultraviolet light and moisture and heat aging, so the coating of the thermoplastic resin can form a protective layer for the internal fiber reinforced composite twisted body, thereby extending the service life of the cable.

[0071] Illustratively, the thermoplastic resin may be at least one of high-density polyethylene, polypropylene, or polyamide.

[0072] It should be noted that the end of the twisting body needs to be chemically degraded later to decompose the photocurable resin in the twisting body so that the first fiber material at the end of the twisting body is exposed. Therefore, the end of the twisting body does not need to be coated with thermoplastic resin to avoid affecting the rate of chemical degradation and unnecessary waste of thermoplastic resin.

[0073] In this exemplary embodiment, a preset number of fiber reinforced composite rods are extruded by light-curing pultrusion and then twisted to obtain a twisted body, which can improve the strength of the cable body. The surface of a preset portion of the twisted body is coated with a thermoplastic resin to form a protective layer for the internal fiber reinforced composite twisted body, thereby enhancing the ultraviolet resistance and moisture-heat aging resistance of the cable and extending the service life of the cable.

[0074] In the exemplary embodiment provided by the present disclosure, the monomer includes at least one of isobornyl acrylate, ethoxylated oxyphenyl acrylate, dipropylene glycol diacrylate, hexylene glycol diacrylate, and trimethylolpropane triacrylate. The type of monomer can be selected according to the mechanical performance requirements or design requirements of the cable, for example, a single isobornyl acrylate, a single ethoxylated oxyphenyl acrylate, or a single dipropylene glycol diacrylate can be selected, a mixed monomer of isobornyl acrylate and ethoxylated oxyphenyl acrylate can be selected, and a mixed monomer of dipropylene glycol diacrylate, hexylene glycol diacrylate and trimethylolpropane triacrylate can be selected.

[0075] In the exemplary embodiments provided by the present disclosure, the photoinitiator includes at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester, 2-dimethylamino-2-benzyl-1-[4-(4-morpholinyl)phenyl]-1-butanone, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone, and methyl benzoylformate. The type of photoinitiator can be selected according to the mechanical property requirements or design requirements of the cable. For example, a single 2-hydroxy-2-methyl-1-phenylpropanone, a single 2,4,6-trimethylbenzoyl-diphenylphosphine oxide or a single 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester can be selected. A mixed photoinitiator of 2-hydroxy-2-methyl-1-phenylpropanone and 1-hydroxycyclohexyl phenyl ketone, or a mixed initiator of 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide can also be selected.

[0076] In an exemplary embodiment provided by the present disclosure, the step S300 of weaving the first fiber material exposed at the end of the cable body with the second fiber material includes:

[0077] The exposed first fiber material is used as the warp structure, and the second fiber material is used as the weft structure. The exposed first fiber material and the second fiber material are woven warp and weft to form a woven structure; wherein, in the direction from the cable body to the anchor, the thickness of the woven structure increases according to a preset rule.

[0078] In this embodiment, the end of the cable body is placed in a chemical degradation liquid for degradation, so that the first fiber material at the end of the cable body is exposed, and the exposed first fiber material is used as the warp structure, and the second fiber material is used as the weft structure. The exposed first fiber material and the second fiber material are woven in warp and weft to form a woven structure to improve the shear strength of the anchor. The first fiber material continuous in the warp direction and the second fiber material continuous in the weft direction can be woven in a plain weave, a twill weave, and an interlayer cross to form a woven structure. In the anchor, the farther away from the cable body, the more the unit area mass of the woven second fiber material is, so as to improve the interlayer shear strength of the anchor end. The closer to the cable body, the less the unit area mass of the woven second fiber material is, so as to transition to the tangent surface at the connection between the anchor and the cable body, forming a gradual cross-section, so as to effectively transfer stress and reduce damage to the connection area between the cable body and the anchor.

[0079] In the exemplary embodiment provided by the present disclosure, the concentration of the chemical degradation liquid is 3.7%-20.5%, and the chemical degradation liquid includes an acidic catalyst or a basic catalyst. The acidic catalyst includes at least one of p-toluenesulfonic acid, acetic acid, phosphotungstic acid trifluoroacetic acid, and trifluoromethanesulfonic acid. The basic catalyst includes at least one of 4-dimethylaminopyridine, tert-butylimino-tri(pyrrolidine)phosphine, 1,8-diazabicyclo[5.4.0]undec-7-ene, and 1,5,7-triazabicyclo[4,4,0]dec-5-ene.

[0080] The chemical degradation liquid includes an acidic catalyst or an alkaline catalyst. The concentration of the chemical degradation liquid is 3.7%-20.5%, and the solvent can be at least one of ethanol, ethylene glycol, polyethylene glycol, ethanol, ethyl acetate, methyl formate, and acetone. The acidic catalyst and the alkaline catalyst can be selected separately according to actual needs, but the acidic catalyst and the alkaline catalyst cannot be mixed to avoid catalyst deactivation and affect the degradation of the light-curing resin at the end of the cable body.

[0081] In order to more clearly explain the technical solution of the present disclosure, a specific example of a method for preparing a cable provided by an exemplary embodiment of the present disclosure is given below to prepare the cable provided by the exemplary embodiment of the present disclosure.

[0082] The first fiber material, 40-160 parts by mass of photocurable resin, 20-30 parts by mass of monomer, 1-3 parts by mass of photoinitiator, and 5-10 parts by mass of auxiliary agent are used as raw materials, and 3-100 fiber-reinforced composite rods are extruded at the same time by photocuring pultrusion. The mass ratio of the first fiber material to the photocurable resin in the fiber-reinforced composite rod is 1:0.12-1.14. The extrusion rate of the photocuring pultrusion is 5-15m / min.

[0083] 3 to 100 fiber reinforced composite rods are twisted to obtain a twisted body.

[0084] The predetermined part of the twisted body is impregnated with thermoplastic resin and then cured to obtain the rope body; the predetermined part includes the part except the end of the twisted body, and the length of the end accounts for 4%-20% of the length of the twisted body.

[0085] The end of the cable body is placed in a chemical degradation liquid, the temperature of which is controlled at 80-150° C., and taken out after standing for 30-120 minutes, so that the light-curing resin at the end of the cable body is degraded and the first fiber material at the end of the cable body is exposed;

[0086] The exposed first fiber material is used as the warp structure and the second fiber material is used as the weft structure, and the exposed first fiber material and the second fiber material are woven warp and weft to form a woven structure, wherein the thickness of the woven structure gradually increases from the cable body to the anchor.

[0087] The braided end of the cable body and a portion of the cable body adjacent to the end of the cable body are placed in a molding mold, and thermosetting resin is poured and molded by resin transfer molding to form an anchor at the end of the cable body to obtain a cable. The mass ratio of the fiber material to the thermosetting resin in the anchor is 1:0.56-2.2.

[0088] The comparison between the cable embodiment provided by the present disclosure and the cable of comparative example 1 is given below in the form of a table, and the cables of the embodiment and comparative example 1 are subjected to tensile tests.

[0089] Table 1

[0090]

[0091]

[0092] It can be seen from the data in Table 1 that the maximum tensile load of the cables provided by exemplary embodiments 1-10 of the present disclosure far exceeds the maximum tensile load of 160KN of the equal-rigidity galvanized steel strand cable in comparative example 1; and the anchors of the cables of embodiments 1-10 are integrally formed, and failure due to stress concentration at the connection points will not occur, and during the tensile test, no breakage occurs at the connection between the anchor and the cable body.

[0093] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present disclosure.

[0094] Finally, it should be noted that in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0095] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A cable, characterized in that: The cable is a fiber reinforced composite cable, which includes a cable body and an anchor, and the anchor is located at the end of the cable body; wherein the cable body includes a fiber material and a photocurable resin in a mass ratio of 1:0.12-1.14, and the anchor includes the fiber material and a thermosetting resin in a mass ratio of 1:0.56-2.

2.

2. The cable according to claim 1, characterized in that: In the anchor, along the length direction of the cable, the thickness of the fiber material increases according to a preset rule.

3. The cable according to claim 1 or 2, characterized in that: The cable body includes a first fiber material; the first fiber material extends to the anchor, and the anchor further includes a second fiber material, and the first fiber material and the second fiber material form a woven structure.

4. The cable according to claim 3, characterized in that: The mass ratio per unit area of ​​the first fiber material and the second fiber material is 1:0.8-8.

5.

5. The cable according to claim 1, characterized in that: The anchor occupies 4%-20% of the length of the cable.

6. The cable according to claim 1, characterized in that: The fiber material includes at least one of carbon fiber, glass fiber and basalt fiber; The photocurable resin includes at least one of epoxy acrylate resin and polyurethane acrylate resin; The thermosetting resin includes at least one of phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, epoxy resin, unsaturated resin, polyurethane and polyimide.

7. A method for preparing a cable, characterized in that: The preparation method is used to prepare the cable according to any one of claims 1 to 6, and the preparation method comprises: The cable body is prepared by light-curing pultrusion; placing the end of the cable body in a chemical degradation liquid for degradation, so that the first fiber material of the end of the cable body is exposed; Weaving the first fiber material exposed at the end of the cable body with the second fiber material; The braided end of the cable body is molded by resin transfer molding to form an anchor at the end of the cable body to obtain the cable.

8. The method for preparing a cable according to claim 7, characterized in that: The method of preparing the cable body by photocuring pultrusion molding includes: Using the first fiber material, photocurable resin, monomer and photoinitiator as raw materials, a preset number of fiber-reinforced composite material rods are extruded simultaneously by photocuring pultrusion; Twisting a preset number of the fiber-reinforced composite material rods to obtain a twisted body; The predetermined part of the twisted body is coated with thermoplastic resin to obtain a rope body; the predetermined part includes a part except the end of the twisted body, and the length of the end accounts for 4%-20% of the length of the twisted body.

9. The method for preparing a cable according to claim 7, characterized in that: The step of weaving the first fiber material exposed at the end of the cable body with the second fiber material comprises: The exposed first fiber material is used as the warp structure, and the second fiber material is used as the weft structure, and the exposed first fiber material and the second fiber material are woven warp and weft to form a woven structure; wherein, in the direction from the cable body to the anchor, the thickness of the woven structure increases according to a preset rule.

10. The method for preparing a cable according to claim 8, characterized in that: The monomer comprises at least one of isobornyl acrylate, ethoxylated oxyphenyl acrylate, dipropylene glycol diacrylate, hexanediol diacrylate, and trimethylolpropane triacrylate; and / or, The photoinitiator includes at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester, 2-dimethylamino-2-benzyl-1-[4-(4-morpholinyl)phenyl]-1-butanone, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone and methyl benzoylformate; and / or The concentration of the chemical degradation liquid is 3.7%-20.5%, and the chemical degradation liquid includes an acidic catalyst or a basic catalyst; The acidic catalyst includes at least one of p-toluenesulfonic acid, acetic acid, phosphotungstic acid, trifluoroacetic acid, and trifluoromethanesulfonic acid; The alkaline catalyst includes at least one of 4-dimethylaminopyridine, tert-butylimino-tri(pyrrolidine)phosphine, 1,8-diazabicyclo[5.4.0]undec-7-ene, and 1,5,7-triazabicyclo[4,4,0]dec-5-ene.

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