Cold-resistant wear-resistant cable
By using a ceramicized silicone rubber layer in the cable to crosslink with the shielding mesh layer and the outer sheath layer, combined with a sandwich insulation structure and irradiation crosslinking treatment, the problem of reduced cable elongation in cold regions is solved, and stable use at low temperatures is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN TONGYU CABLES
- Filing Date
- 2023-02-16
- Publication Date
- 2026-06-23
Smart Images
Figure CN116313264B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wire and cable technology, and in particular to a cold-resistant and wear-resistant cable. Background Technology
[0002] With the increasing application of wires and cables in production and daily life, people have higher and higher requirements for them. In particular, in cold regions, wires and cables need to have a certain degree of flexibility and cold resistance so that they will not become brittle and crack due to low temperature and become unusable. In addition, in some special environments in cold regions, such as wind power generator sets and locomotive sets, wires and cables are also required to have oil resistance and abrasion resistance.
[0003] Chinese patent CN112599289B discloses a cable with high wear resistance and ductility and its preparation method. The cable includes a sheath and a core. The core includes a conductor. The surface of the conductor is provided with a protective layer. The conductor is wrapped with mica tape. The surface of the mica tape is provided with an insulating layer.
[0004] Although the cable is prepared by mixing aluminum, magnesium, copper, iron, zinc, silicon and manganese in a certain proportion to achieve good ductility, its ductility will decrease due to low temperature when used in cold regions, which will seriously affect its service life and needs to be improved. Summary of the Invention
[0005] In view of this, the purpose of this application is to provide a cold-resistant and abrasion-resistant cable to avoid the problem of reduced elongation due to cold weather affecting its service life. The specific solution is as follows:
[0006] A cold-resistant and wear-resistant cable includes at least one cable core and a shielding mesh layer and a protective outer layer that are sequentially wrapped around the cable core. A ceramicized silicone rubber layer is disposed between the shielding mesh layer and the protective outer layer, and an outer adhesive layer for mutual cross-linking is disposed between the ceramicized silicone rubber layer and the protective outer layer. An inner adhesive layer for mutual cross-linking is disposed between the ceramicized silicone rubber layer and the shielding mesh layer.
[0007] Preferably, the ceramicized silicone rubber layer includes a plurality of elastic outer portions and elastic inner portions connected in sequence, the outer side of the elastic outer portion is cross-linked with the outer rubber layer, and the inner side of the elastic inner portion is cross-linked with the inner rubber layer.
[0008] Preferably, both the elastic outer portion and the elastic inner portion are semi-circular arc-shaped, and an inner heat insulation cavity facing the inner adhesive layer is formed on the inner side of the elastic outer portion; an outer heat insulation cavity facing the outer adhesive layer is formed on the outer side of the elastic inner portion.
[0009] Preferably, a reinforcing connecting section is provided between the end of the elastic inner connection and the end of the adjacent elastic outer connection.
[0010] Preferably, both the outer and inner adhesive layers comprise 50-60 parts by weight of polyethylene resin, 40-60 parts by weight of modified resin, 0.3-1 parts by weight of crosslinking agent, 0.2-0.8 parts by weight of silane coupling agent, and 0.2-0.5 parts by weight of light stabilizer. After obtaining the adhesive layer preform through mixing, plasticizing, melting, extrusion, casting, and cooling, the surface crosslinking degree is initially achieved by irradiation crosslinking to a degree of 8-35%.
[0011] Preferably, the irradiation is performed using an electron beam and the irradiation dose is controlled to be 1-30 KGy.
[0012] Preferably, the modified resin is... Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
[0013] Preferably, the crosslinking agent is composed of at least one of polyethylene glycol dimethacrylate, 2-butyl-2-ethyl-1,3-propanediol diacrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, bisphenol A dimethacrylate ethoxylate, 2,4,6-tris(2-propenyloxy)-1,3,5-triazine and triethylene glycol dimethacrylate mixed in any proportion.
[0014] Preferably, the silane coupling agent is composed of at least one of isobutyltriethoxysilane and vinyltris(β-methoxyethoxy)silane, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane and γ-glycidoxypropyltrimethylsilane in any proportion.
[0015] Preferably, the light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate or sebacate bis-2,2,6,6-tetramethylpiperidinol.
[0016] As can be seen from the above solutions, this application provides a cold-resistant and wear-resistant cable, which has the following beneficial effects:
[0017] 1. The ceramicized silicone rubber layer and the shielding mesh layer are cross-linked by the inner adhesive layer, and the ceramicized silicone rubber layer and the outer protective layer are cross-linked by the outer adhesive layer, so as to significantly improve the cold resistance and enable the cold-resistant and wear-resistant cable to avoid the problem of reduced elongation due to cold weather affecting its service life.
[0018] 2. The ceramicized silicone rubber layer, composed of an elastic outer part, an elastic inner part, and a reinforcing connecting section connecting the elastic outer part and the elastic inner part, forms multiple inner insulation cavities with equal arc distribution between the ceramicized silicone rubber layer and the elastic shielding mesh layer, and multiple outer insulation cavities with equal arc distribution between the ceramicized silicone rubber layer and the outer sheath layer, thereby achieving the purpose of interlayer insulation and significantly improving the cold-proof performance of the cold-proof and wear-resistant cable.
[0019] 3. The ceramicized silicone rubber layer is bonded and fixed to the outer sheath layer and the shielding mesh layer on both sides by preliminary irradiation cross-linking of the outer and inner adhesive layers, thereby maintaining stable bonding performance in cold weather conditions and avoiding the decrease in elongation capacity, which would affect the service life of the cold-resistant and wear-resistant cable.
[0020] 4. By modifying the functional group structure of the resin, the cross-linking degree and cross-linking density of the cold-resistant and wear-resistant cable are significantly improved. This enables the cable to achieve the goals of interlayer insulation, dense connection and guaranteed elongation in the connection structure with the ceramicized silicone rubber layer, thereby significantly extending the service life of the cold-resistant and wear-resistant cable. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the cold-resistant and wear-resistant cable disclosed in this application.
[0023] Explanation of reference numerals in the attached diagram: 1. Cable core; 2. Shielding mesh layer; 3. Ceramicized silicone rubber layer; 31. Elastic outer connection; 311. Inner insulation cavity; 32. Elastic inner connection; 321. Outer insulation cavity; 33. Reinforced connection section; 4. Outer sheath layer; 5. Outer rubber layer; 6. Inner rubber layer. Detailed Implementation
[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] It should be mentioned that the shielding mesh layer 2, the ceramicized silicone rubber layer 3, and the outer sheath layer 4 are all made of existing materials. Furthermore, at least one mica tape layer can be sandwiched in the ceramicized silicone rubber layer 3, thereby achieving good high-temperature resistance and flame retardancy under the action of the mica tape layer.
[0026] The following will provide a detailed description of the cold-resistant and wear-resistant cable of this application.
[0027] like Figure 1 As shown, a cold-resistant and abrasion-resistant cable includes at least one cable core 1 and a shielding mesh layer 2 and a protective outer layer sequentially wrapped around the cable core 1. It should be noted that a ceramicized silicone rubber layer 3 is disposed between the shielding mesh layer 2 and the protective outer layer. Specifically, an outer adhesive layer 5 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the protective outer layer, and an inner adhesive layer 6 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the shielding mesh layer 2. Therefore, this cold-resistant and abrasion-resistant cable achieves significant improvement in cold resistance by cross-linking the ceramicized silicone rubber layer 3 and the shielding mesh layer 2 through the inner adhesive layer 6, and cross-linking the ceramicized silicone rubber layer 3 and the protective outer layer through the outer adhesive layer 5, thus preventing a decrease in elongation capacity due to cold weather and consequently affecting its service life.
[0028] It should be noted that the ceramicized silicone rubber layer 3 includes multiple elastic outer portions 31 and elastic inner portions 32 connected in sequence. The outer side of the elastic outer portion 31 is cross-linked with the outer rubber layer 5, and the inner side of the elastic inner portion 32 is cross-linked with the inner rubber layer 6. Simultaneously, both the elastic outer portion 31 and the elastic inner portion 32 are semi-circular in shape, and an inner thermal insulation cavity 311 facing the inner rubber layer 6 is formed on the inner side of the elastic outer portion 31, while an outer thermal insulation cavity 321 facing the outer rubber layer 5 is formed on the outer side of the elastic inner portion 32. Therefore, by using the ceramicized silicone rubber layer 3, which consists of the elastic outer part 31, the elastic inner part 32, and the reinforcing connection section 33 connecting the elastic outer part 31 and the elastic inner part 32, the shielding and protective mesh layer 2 and the outer sheath layer 4 are elastically connected. At the same time, multiple inner insulation cavities 311 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the elastic shielding and protective mesh layer 2, and multiple outer insulation cavities 321 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the outer sheath layer 4, thereby achieving the purpose of interlayer insulation and significantly improving the cold resistance performance of the cold-resistant and wear-resistant cable.
[0029] Both the outer rubber layer 5 and the inner rubber layer 6 undergo preliminary irradiation crosslinking treatment. Then, after the inner rubber layer 6 is wrapped around the shielding mesh layer 2, it is further wrapped with a ceramicized silicone rubber layer 3 for irradiation crosslinking treatment. After the irradiation crosslinking treatment of the inner rubber layer 6 is completed, the outer rubber layer 5 and the outer sheath layer 4 are wrapped around it in sequence for secondary irradiation crosslinking treatment.
[0030] It should be noted that both the outer and inner rubber layers include, by weight, 50-60 parts of polyethylene resin, 40-60 parts of modified resin, 0.3-1 parts of crosslinking agent, 0.2-0.8 parts of silane coupling agent, and 0.2-0.5 parts of light stabilizer. After obtaining the rubber layer preform through mixing, plasticizing, melting, extrusion, casting, and cooling, and after preliminary irradiation crosslinking, the surface crosslinking degree of the rubber layer preform is made to be 8-35%, which is then used to coat the outer side of the shielding protective mesh layer and the ceramicized silicone rubber layer.
[0031] The irradiation process employs electron beam treatment, with the irradiation dose controlled at 1-30 kGy. The co-crosslinking agent is a mixture of at least one of polyethylene glycol dimethacrylate, 2-butyl-2-ethyl-1,3-propanediol diacrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, bisphenol A dimethacrylate ethoxylate, 2,4,6-tris(2-propenyloxy)-1,3,5-triazine, and triethylene glycol dimethacrylate in any proportion. The silane coupling agent is a mixture of at least one of isobutyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, γ-aminopropyltriethoxysilane, γ-methacryloyloxypropyltrimethoxysilane, and γ-glycidyl etheroxypropyltrimethylsilane in any proportion. The light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate or sebacate bis-2,2,6,6-tetramethylpiperidinol.
[0032] At the same time, modified resin is Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
[0033] Example 1
[0034] like Figure 1As shown, a cold-resistant and abrasion-resistant cable includes at least one cable core 1 and a shielding mesh layer 2 and a protective outer layer sequentially wrapped around the cable core 1. It should be noted that a ceramicized silicone rubber layer 3 is disposed between the shielding mesh layer 2 and the protective outer layer. Specifically, an outer adhesive layer 5 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the protective outer layer, and an inner adhesive layer 6 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the shielding mesh layer 2. Therefore, this cold-resistant and abrasion-resistant cable achieves significant improvement in cold resistance by cross-linking the ceramicized silicone rubber layer 3 and the shielding mesh layer 2 through the inner adhesive layer 6, and cross-linking the ceramicized silicone rubber layer 3 and the protective outer layer through the outer adhesive layer 5, thus preventing a decrease in elongation capacity due to cold weather and consequently affecting its service life.
[0035] It should be noted that the ceramicized silicone rubber layer 3 includes multiple elastic outer portions 31 and elastic inner portions 32 connected in sequence. The outer side of the elastic outer portion 31 is cross-linked with the outer rubber layer 5, and the inner side of the elastic inner portion 32 is cross-linked with the inner rubber layer 6. Simultaneously, both the elastic outer portion 31 and the elastic inner portion 32 are semi-circular in shape, and an inner thermal insulation cavity 311 facing the inner rubber layer 6 is formed on the inner side of the elastic outer portion 31, while an outer thermal insulation cavity 321 facing the outer rubber layer 5 is formed on the outer side of the elastic inner portion 32. Therefore, by using the ceramicized silicone rubber layer 3, which consists of the elastic outer part 31, the elastic inner part 32, and the reinforcing connection section 33 connecting the elastic outer part 31 and the elastic inner part 32, the shielding and protective mesh layer 2 and the outer sheath layer 4 are elastically connected. At the same time, multiple inner insulation cavities 311 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the elastic shielding and protective mesh layer 2, and multiple outer insulation cavities 321 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the outer sheath layer 4, thereby achieving the purpose of interlayer insulation and significantly improving the cold resistance performance of the cold-resistant and wear-resistant cable.
[0036] Both the outer rubber layer 5 and the inner rubber layer 6 undergo preliminary irradiation crosslinking treatment. Then, after the inner rubber layer 6 is wrapped around the shielding mesh layer 2, it is further wrapped with a ceramicized silicone rubber layer 3 for irradiation crosslinking treatment. After the irradiation crosslinking treatment of the inner rubber layer 6 is completed, the outer rubber layer 5 and the outer sheath layer 4 are wrapped around it in sequence for secondary irradiation crosslinking treatment.
[0037] It should be noted that both the outer and inner rubber layers comprise the following components by weight: 50 parts polyethylene resin, 40 parts modified resin, 0.3 parts crosslinking agent, 0.2 parts silane coupling agent, and 0.2 parts light stabilizer. After mixing, plasticizing, melting, extruding, casting, and cooling to obtain the rubber layer preform, and after preliminary irradiation crosslinking, the surface crosslinking degree of the rubber layer preform is made to be 8%, which is then used to coat the outer side of the shielding protective mesh layer and the ceramicized silicone rubber layer.
[0038] The irradiation process employs electron beam treatment, with the irradiation dose controlled at 1-30 kGy. The co-crosslinking agent is a mixture of polyethylene glycol dimethacrylate, 2,4,6-tris(2-propenyloxy)-1,3,5-triazine, and triethylene glycol dimethacrylate in a molar ratio of 1:1:1. The silane coupling agent is a mixture of isobutyltriethoxysilane and γ-glycidyl etheroxypropyltrimethylsilane in a molar ratio of 3:1. The light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate.
[0039] At the same time, modified resin is Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
[0040] In this embodiment, a, b, and c are all 1, R1 is a C4 alkyl group, R2 is a C8 alkyl group, X1 is a halogen, Y is an amino group, X3 is an acyl group, and R3 is a C1 alkyl group.
[0041] Example 2
[0042] like Figure 1 As shown, a cold-resistant and abrasion-resistant cable includes at least one cable core 1 and a shielding mesh layer 2 and a protective outer layer sequentially wrapped around the cable core 1. It should be noted that a ceramicized silicone rubber layer 3 is disposed between the shielding mesh layer 2 and the protective outer layer. Specifically, an outer adhesive layer 5 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the protective outer layer, and an inner adhesive layer 6 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the shielding mesh layer 2. Therefore, this cold-resistant and abrasion-resistant cable achieves significant improvement in cold resistance by cross-linking the ceramicized silicone rubber layer 3 and the shielding mesh layer 2 through the inner adhesive layer 6, and cross-linking the ceramicized silicone rubber layer 3 and the protective outer layer through the outer adhesive layer 5, thus preventing a decrease in elongation capacity due to cold weather and consequently affecting its service life.
[0043] It should be noted that the ceramicized silicone rubber layer 3 includes multiple elastic outer portions 31 and elastic inner portions 32 connected in sequence. The outer side of the elastic outer portion 31 is cross-linked with the outer rubber layer 5, and the inner side of the elastic inner portion 32 is cross-linked with the inner rubber layer 6. Simultaneously, both the elastic outer portion 31 and the elastic inner portion 32 are semi-circular in shape, and an inner thermal insulation cavity 311 facing the inner rubber layer 6 is formed on the inner side of the elastic outer portion 31, while an outer thermal insulation cavity 321 facing the outer rubber layer 5 is formed on the outer side of the elastic inner portion 32. Therefore, by using the ceramicized silicone rubber layer 3, which consists of the elastic outer part 31, the elastic inner part 32, and the reinforcing connection section 33 connecting the elastic outer part 31 and the elastic inner part 32, the shielding and protective mesh layer 2 and the outer sheath layer 4 are elastically connected. At the same time, multiple inner insulation cavities 311 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the elastic shielding and protective mesh layer 2, and multiple outer insulation cavities 321 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the outer sheath layer 4, thereby achieving the purpose of interlayer insulation and significantly improving the cold resistance performance of the cold-resistant and wear-resistant cable.
[0044] Both the outer rubber layer 5 and the inner rubber layer 6 undergo preliminary irradiation crosslinking treatment. Then, after the inner rubber layer 6 is wrapped around the shielding mesh layer 2, it is further wrapped with a ceramicized silicone rubber layer 3 for irradiation crosslinking treatment. After the irradiation crosslinking treatment of the inner rubber layer 6 is completed, the outer rubber layer 5 and the outer sheath layer 4 are wrapped around it in sequence for secondary irradiation crosslinking treatment.
[0045] It should be noted that both the outer and inner rubber layers comprise the following components by weight: 55 parts polyethylene resin, 50 parts modified resin, 0.7 parts crosslinking agent, 0.5 parts silane coupling agent, and 0.35 parts light stabilizer. After mixing, plasticizing, melting, extruding, casting, and cooling to obtain the rubber layer preform, and after preliminary irradiation crosslinking, the surface crosslinking degree of the rubber layer preform is made to be 20%, which is then used to coat the outer side of the shielding protective mesh layer and the ceramicized silicone rubber layer.
[0046] The irradiation process employs electron beam treatment, with the irradiation dose controlled at 1-30 kGy. The co-crosslinking agent is a mixture of bisphenol A dimethacrylate and 2,4,6-tris(2-propenyloxy)-1,3,5-triazine in a molar ratio of 2:1. The silane coupling agent is a mixture of isobutyltriethoxysilane and γ-methacryloyloxypropyltrimethoxysilane in a molar ratio of 4:1. The light stabilizer is bis-2,2,6,6-tetramethylpiperidinol sebacic acid.
[0047] At the same time, modified resin is Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
[0048] In this embodiment, a is 1, b is 2, c is 1, R1 is a C6 alkyl group, R2 is a C6 alkyl group, X1 is an isocyanate group, Y is a halogen, X3 is an aldehyde group, and R3 is a C4 alkyl group.
[0049] Example 3
[0050] like Figure 1 As shown, a cold-resistant and abrasion-resistant cable includes at least one cable core 1 and a shielding mesh layer 2 and a protective outer layer sequentially wrapped around the cable core 1. It should be noted that a ceramicized silicone rubber layer 3 is disposed between the shielding mesh layer 2 and the protective outer layer. Specifically, an outer adhesive layer 5 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the protective outer layer, and an inner adhesive layer 6 for cross-linking is disposed between the ceramicized silicone rubber layer 3 and the shielding mesh layer 2. Therefore, this cold-resistant and abrasion-resistant cable achieves significant improvement in cold resistance by cross-linking the ceramicized silicone rubber layer 3 and the shielding mesh layer 2 through the inner adhesive layer 6, and cross-linking the ceramicized silicone rubber layer 3 and the protective outer layer through the outer adhesive layer 5, thus preventing a decrease in elongation capacity due to cold weather and consequently affecting its service life.
[0051] It should be noted that the ceramicized silicone rubber layer 3 includes multiple elastic outer portions 31 and elastic inner portions 32 connected in sequence. The outer side of the elastic outer portion 31 is cross-linked with the outer rubber layer 5, and the inner side of the elastic inner portion 32 is cross-linked with the inner rubber layer 6. Simultaneously, both the elastic outer portion 31 and the elastic inner portion 32 are semi-circular in shape, and an inner thermal insulation cavity 311 facing the inner rubber layer 6 is formed on the inner side of the elastic outer portion 31, while an outer thermal insulation cavity 321 facing the outer rubber layer 5 is formed on the outer side of the elastic inner portion 32. Therefore, by using the ceramicized silicone rubber layer 3, which consists of the elastic outer part 31, the elastic inner part 32, and the reinforcing connection section 33 connecting the elastic outer part 31 and the elastic inner part 32, the shielding and protective mesh layer 2 and the outer sheath layer 4 are elastically connected. At the same time, multiple inner insulation cavities 311 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the elastic shielding and protective mesh layer 2, and multiple outer insulation cavities 321 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the outer sheath layer 4, thereby achieving the purpose of interlayer insulation and significantly improving the cold resistance performance of the cold-resistant and wear-resistant cable.
[0052] Both the outer rubber layer 5 and the inner rubber layer 6 undergo preliminary irradiation crosslinking treatment. Then, after the inner rubber layer 6 is wrapped around the shielding mesh layer 2, it is further wrapped with a ceramicized silicone rubber layer 3 for irradiation crosslinking treatment. After the irradiation crosslinking treatment of the inner rubber layer 6 is completed, the outer rubber layer 5 and the outer sheath layer 4 are wrapped around it in sequence for secondary irradiation crosslinking treatment.
[0053] It should be noted that both the outer and inner rubber layers include 60 parts by weight of polyethylene resin, 60 parts of modified resin, 1 part of crosslinking agent, 0.8 parts of silane coupling agent, and 0.5 parts of light stabilizer. After mixing, plasticizing, melting, extruding, casting, and cooling to obtain the rubber layer preform, and after preliminary irradiation crosslinking, the surface crosslinking degree of the rubber layer preform is made to be 35%, which is then used to coat the outside of the shielding protective mesh layer and the ceramicized silicone rubber layer.
[0054] The irradiation process employs electron beam treatment, with the irradiation dose controlled at 1-30 kGy. The co-crosslinking agent is 2-butyl-2-ethyl-1,3-propanediol diacrylate. The silane coupling agent is a mixture of isobutyltriethoxysilane, vinyltris(β-methoxyethoxy)silane, and γ-methacryloyloxypropyltrimethoxysilane in a molar ratio of 6:1:2. The light stabilizer is bis-2,2,6,6-tetramethylpiperidinol sebacic acid.
[0055] At the same time, modified resin is Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
[0056] In this embodiment, a is 2, b is 1, c is 3, R1 is a C8 alkyl group, R2 is a C4 alkyl group, X1 is an anhydride group, Y is a carboxyl group, X3 is an acyl group, and R3 is a C3 alkyl group.
[0057] Example 4
[0058] The difference between Embodiment 4 and Embodiment 1 is that a reinforcing connecting section is provided between the end of the elastic inner part and the end of the adjacent elastic outer part in Embodiment 4. This enhances the stability of the connection structure between the elastic inner part and the elastic outer part when the reinforcing connecting section connects the adjacent elastic inner part and the elastic outer part, and effectively avoids structural damage caused by the separation of the elastic inner part and the elastic outer part when the elastic inner part or the elastic outer part undergoes deformation.
[0059] Comparative Example 1
[0060] The difference between Comparative Example 1 and Example 1 is that X2 in Comparative Example 1 is a C1-C8 alkyl group.
[0061] Comparative Example 2
[0062] The difference between Comparative Example 2 and Example 1 is that the ceramicized silicone rubber layer 3 in Comparative Example 2 is cylindrical and completely covers the outside of the shielding mesh layer 2, and the outside is in complete contact with the inside of the outer sheath layer 4.
[0063] Comparative Example 3
[0064] The difference between Comparative Example 3 and Example 1 is that in the modified resin of Comparative Example 3, b is 0.
[0065] Test method:
[0066] The performance of this cold-resistant and abrasion-resistant cable was tested according to GB / T 2951, GB / T 3047 and GB / T 29631, and the following performance test results were obtained:
[0067] Table 1. Performance Test Results of Cold-resistant and Wear-resistant Cables
[0068]
[0069]
[0070] As shown in Table 1, the cold-resistant and wear-resistant cable of this application maintains good elongation at -25℃. Furthermore, its elongation is significantly better than the performance test results in Comparative Examples 1, 2, and 3. Therefore, this cold-resistant and wear-resistant cable effectively avoids the problem of reduced elongation due to cold weather affecting its service life.
[0071] In summary, this application provides a cold-resistant and wear-resistant cable. The cable is formed by initially irradiating and cross-linking a preform of adhesive layer, which is then wrapped around the outer side of the shielding mesh layer 2 and the ceramicized silicone rubber layer 3. Following sequential irradiation and cross-linking, corresponding outer adhesive layer 5 and inner adhesive layer 6 are formed. This allows the ceramicized silicone rubber layer 3 to be bonded and fixed to the outer sheath layer 4 and the shielding mesh layer 2 on both sides, respectively. This maintains stable adhesion performance in cold weather conditions, preventing a decrease in elongation and thus affecting the service life of the cold-resistant and wear-resistant cable. Furthermore, the active function of the modified resin's functional groups significantly enhances the structural cross-linking degree and density of the cold-resistant and wear-resistant cable. This achieves the goals of interlayer insulation, dense connection, and guaranteed elongation in the connection structure with the ceramicized silicone rubber layer 3, thereby significantly extending the service life of the cold-resistant and wear-resistant cable. Among them, multiple inner insulation cavities 311 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the elastic connection shielding protective mesh layer 2, and multiple outer insulation cavities 321 with equal arc distribution are formed between the ceramicized silicone rubber layer 3 and the outer sheath layer 4, thereby achieving the purpose of interlayer insulation and significantly improving the cold resistance performance of the cold-proof and wear-resistant cable.
[0072] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.
[0073] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0074] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A cold-resistant and wear-resistant cable, comprising at least one cable core and a shielding mesh layer and a protective outer layer sequentially wrapped around the cable core, characterized in that: A ceramicized silicone rubber layer is disposed between the shielding mesh layer and the outer protective layer, and an outer adhesive layer for cross-linking is disposed between the ceramicized silicone rubber layer and the outer protective layer. An inner adhesive layer for cross-linking is disposed between the ceramicized silicone rubber layer and the shielding mesh layer. Both the outer and inner adhesive layers comprise, by weight, 50-60 parts of polyethylene resin, 40-60 parts of modified resin, 0.3-1 parts of a cross-linking agent, 0.2-0.8 parts of a silane coupling agent, and 0.2-0.5 parts of a light stabilizer. After obtaining the adhesive preform through mixing, plasticizing, melting, extrusion, casting, and cooling, it undergoes preliminary irradiation cross-linking to achieve a surface cross-linking degree of 8-35%. The modified resin is... Where a, b, and c are natural numbers greater than 0; R1 and R2 are C4-C8 alkyl groups; X1 is one of halogen, carboxyl, hydroxyl, aldehyde, mercapto, acid anhydride, sulfonic acid, isocyanate, or acyl chloride groups; X2 is... Furthermore, Y is a halogen, carboxyl, or amino group, X3 is an acyl or aldehyde group, and R3 is a C1-C4 alkyl group.
2. The cold-resistant and wear-resistant cable according to claim 1, characterized in that: The ceramicized silicone rubber layer includes a plurality of elastic outer portions and elastic inner portions connected in sequence. The outer side of the elastic outer portion is cross-linked with the outer rubber layer, and the inner side of the elastic inner portion is cross-linked with the inner rubber layer.
3. The cold-resistant and wear-resistant cable according to claim 2, characterized in that: Both the elastic outer portion and the elastic inner portion are semi-circular arc-shaped, and an inner heat insulation cavity facing the inner adhesive layer is formed on the inner side of the elastic outer portion; an outer heat insulation cavity facing the outer adhesive layer is formed on the outer side of the elastic inner portion.
4. The cold-resistant and wear-resistant cable according to claim 2, characterized in that: A reinforcing connection section is provided between the end of the elastic inner connection and the end of the adjacent elastic outer connection.
5. The cold-resistant and wear-resistant cable according to claim 1, characterized in that: The irradiation is performed using an electron beam and the irradiation dose is controlled to be 1-30 kGy.
6. The cold-resistant and wear-resistant cable according to claim 1, characterized in that: The co-crosslinking agent is composed of at least one of polyethylene glycol dimethacrylate, 2-butyl-2-ethyl-1,3-propanediol diacrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, bisphenol A dimethacrylate ethoxylate, 2,4,6-tris(2-propenyloxy)-1,3,5-triazine and triethylene glycol dimethacrylate mixed in any proportion.
7. The cold-resistant and wear-resistant cable according to claim 1, characterized in that: The silane coupling agent is composed of at least one of isobutyltriethoxysilane and vinyltris(β-methoxyethoxy)silane, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane and γ-glycidoxypropyltrimethylsilane in any proportion.
8. The cold-resistant and wear-resistant cable according to claim 1, characterized in that: The light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate or sebacate bis-2,2,6,6-tetramethylpiperidinol.