462results about "Rubber insulators" patented technology

The invention provides a low-smoke halogen-free flame-retardant cable material and a preparation method thereof, and belongs to the field of cable materials. The low-smoke halogen-free flame-retardant cable material is prepared from the following chemical components: 32 to 40 parts of nitrile rubber, 22 to 27 parts of natural rubber, 8 to 12 parts of benzoxazole-siloxane copolymer containing phosphate dynamic bonds, 13 to 15 parts of core-shell-sheath three-stage structure flame retardant, 4 to 6 parts of hexaphenoxy cyclotriphosphazene modified carbon nanotubes, 2 to 3 parts of europium-doped mesoporous cerium dioxide and 3 to 4 parts of nano zinc oxide. The composite material is prepared from the following components in parts by weight: 3 to 4 parts of carbon nanotube grafted montmorillonite hybrid, 2 to 3 parts of lubricant, 0.8 to 1.2 parts of cross-linking agent, 0.3 to 0.4 part of accelerant, 0.4 to 0.6 part of dicumyl peroxide and 0.1 to 0.2 part of antioxidant. Unification of high flame retardance, low smoke, excellent mechanical property and processability of the cable material is realized.

The invention discloses a flexible fireproof cable and a preparation method thereof, and belongs to the technical field of cables. The cable comprises a conductor, a mica insulation layer, a copper protection layer, a buffer layer and a cable sheath layer. The buffer layer is made of a polyurethane foaming material; the cable sheath layer is prepared from the following components in parts by weight: 80 to 100 parts of methyl vinyl silicone rubber, 18 to 20 parts of modified carbon black, 5 to 8 parts of titanium dioxide, 1 to 2 parts of platinum catalyst, 3 to 6 parts of hydroxyl silicone oil, 0.5 to 1 part of zinc stearate and 0.8 to 1 part of dicumyl peroxide. The modified carbon black is added into the raw materials of the sheath layer, so that the compatibility, the interface bonding force and the flame retardant property of the carbon black and a silicone rubber matrix are effectively improved, and the mechanical property, the wear resistance and the fireproof property of the cable sheath layer are remarkably enhanced.

The invention relates to the technical field of high polymer materials, and provides an anti-aging cable and a preparation method thereof. The anti-aging cable comprises a conductor and a sheath layer, the sheath layer is prepared from the following raw materials in parts by weight: 40 to 60 parts of ethylene propylene diene monomer, 20 to 30 parts of ethylene-vinyl acetate copolymer, 20 to 22 parts of nano cellulose / montmorillonite composite material, 5 to 10 parts of nano silicon dioxide, 10 to 20 parts of magnesium hydroxide, 5 to 8 parts of zinc borate, 1.5 to 3 parts of composite antioxidant, 0.5 to 1.5 parts of ultraviolet light absorber, 1 to 1.2 parts of anti-aging agent and 1 to 2 parts of silane coupling agent. And 0.3 to 0.5 part of maleic anhydride grafted polypropylene. According to the anti-aging cable prepared in the invention, the high temperature resistance and the acid corrosion resistance of the anti-aging cable are improved, and the aging of the cable is effectively delayed.

The invention relates to the technical field of cables, and provides an anti-aging insulated power cable. A conductor layer and an anti-aging outer sheath layer are sequentially arranged from inside to outside. The anti-aging outer sheath layer is prepared from the following raw materials in parts by weight: 55 to 65 parts of PVC (Polyvinyl Chloride) resin, 20 to 30 parts of ethylene propylene diene monomer, 10 to 15 parts of ethylene-vinyl acetate copolymer, 10 to 12 parts of modified kaolin, 18 to 20 parts of diisononyl phthalate, 4 to 5 parts of calcium-zinc composite stabilizer, 1.5 to 2 parts of antioxidant, 0.5 to 1 part of polyethylene wax and 0.5 to 0.7 part of calcium stearate; the modified kaolin is obtained by coating the surface of kaolin with nano silicon dioxide to obtain SiO2-coated kaolin and grafting the SiO2-coated kaolin with an ultraviolet absorbent. According to the anti-aging insulated power cable prepared in the invention, the problem that the ultraviolet absorbent may be decomposed, volatilized or migrated to fail in long-term use is solved, and the anti-aging stability of the insulating material in long-term operation is improved.

The invention discloses an industrial high-temperature-resistant cable, and belongs to the technical field of cables. The cable comprises a cable core and a sheath layer wrapping the cable core. The sheath layer comprises the following components in parts by weight: 32-38 parts of alkenyl polyvinyl chloride, 38-42 parts of methyl vinyl silicone rubber, 15-20 parts of modified basalt fibers, 1-2 parts of a vulcanizing agent, 6-10 parts of a plasticizer, 1-2 parts of a lubricant, 1-2 parts of a stabilizer and 0.3-0.8 part of an antioxidant. Functional modification is performed on the surface of the basalt fiber, so that the basalt fiber and a polymer matrix of the cable sheath can form a multi-layer and firm chemical structure, and the comprehensive performance of the sheath material is effectively improved.

The invention discloses a corrosion-resistant medium-voltage power cable, which relates to the technical field of cables and comprises a cable core, a shielding layer, a fireproof layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside. The cable core is composed of a plurality of insulated wire cores which are mutually twisted. Each insulated wire core is composed of copper wires which are mutually twisted and insulating layers which are sequentially wrapped outside the copper wires which are mutually twisted. A filling material is filled between the cable core and the shielding layer; according to the corrosion-resistant medium-voltage power cable disclosed by the invention, through a synergistic effect of a multi-layer composite structure design and a special modified material, excellent comprehensive performance is realized, and the corrosion-resistant medium-voltage power cable has excellent conductivity, electrical insulativity and mechanical strength and also shows outstanding corrosion resistance, weather resistance, flame retardance and waterproofness; the cable is especially suitable for ocean, underground, chemical plants and other application scenes with strong corrosivity and severe environmental conditions, and can maintain long-term stable operation in extreme environments.

The environment-friendly cable ethylene-propylene insulation material comprises the following raw materials: ethylene propylene diene monomer, an elastomer, a reinforcing agent, a flame retardant, a vulcanizing activator, a filler, a plasticizer, an anti-aging agent, a vulcanizing agent and a silane coupling agent. 50-70 parts by mass of ethylene propylene diene monomer rubber; the elastomer is a POE (polyolefin elastomer) of 30-50 parts; the flame retardant is prepared from 30 to 50 parts of nano magnesium hydroxide, 5 to 10 parts of microencapsulated red phosphorus and 3 to 5 parts of zinc borate; and the plasticizer is paraffin oil. According to the ethylene-propylene insulating material, a halogen-free flame-retardant system is combined with an interface modification technology, so that the defects of poor mechanical property and high material toxicity of a traditional material are overcome. The oxygen index is greater than or equal to 38%, the tensile strength is greater than or equal to 10Mpa, and the material is suitable for high-risk mine environments.

The invention relates to the technical field of overhead conductors, and provides a corrosion-resistant overhead insulated conductor and a preparation method thereof. The corrosion-resistant overhead insulated wire sequentially comprises a conductor, an insulating layer and a sheath layer from inside to outside, and raw materials of the sheath layer comprise nitrile rubber, ethylene propylene diene monomer, a compatilizer, an activating agent, an anti-aging agent, filler, a softening agent, a plasticizer, a vulcanizing agent, an accelerant and a reinforcing agent; the preparation method of the reinforcing agent comprises the following steps: A1, cleaning aramid pulp, adding the aramid pulp into a calcium chloride solution, stirring, cleaning and drying to obtain pretreated aramid pulp; a2, mixing the pretreated aramid pulp and phenolic resin to obtain the reinforcing agent. According to the technical scheme, the problem of poor tensile strength of the sheath layer of the corrosion-resistant overhead insulated wire in the prior art is solved.

The invention relates to the technical field of polymer insulating materials, in particular to a flexible low-smoke halogen-free polypropylene insulating material and a preparation method thereof. The invention discloses an ultra-soft low-smoke halogen-free polypropylene insulating material, which comprises the following components in parts by weight: 50-80 parts of block co-polypropylene; 10 to 40 parts of organic silicon rubber; 0.06 to 0.24 part of a bis-2, 5 vulcanizing agent; the material further comprises an antioxidant, a compatilizer, a flame retardant, a flame retardant synergist, a lubricant and the like. The insulation material provided by the invention is good in flexibility and convenient to install and lay under the condition of ensuring that the polypropylene cable material meets flame-retardant energy absorption and electrical insulation properties. The preparation method of the insulating material adopts a dynamic vulcanization technology, and the organic silicon rubber is distributed in the polypropylene material in a'sea-island 'or'sea-sea' structure, so that the hardness of the matrix resin is reduced on the premise of ensuring the mechanical property of the material. Meanwhile, a surface modification mode of the flame retardant is optimized, so that the hardness of the material is further reduced. And the odor emission of the material in the production and use processes can be effectively reduced, so that the material is more environment-friendly.

The invention relates to the technical field of power cables, and provides an anti-freezing power cable which sequentially comprises a conductor, an insulating layer, a lining layer, an armor layer and an outer sheath from inside to outside, and the outer sheath is prepared from the following raw materials in parts by weight: 30-40 parts of butadiene styrene rubber, 25-35 parts of silicone rubber, 15-25 parts of filler, 20-25 parts of a flame retardant, 2-3 parts of a lubricant, 1-2 parts of a vulcanizing agent and 1-3 parts of a plasticizer; the filler is obtained by modifying illite powder through a modifier, and the modifier comprises an amino silane coupling agent and a phenyl-containing compound. According to the technical scheme, the problems of poor mechanical property and low temperature resistance of the power cable in the prior art are solved.

The ethylene-propylene insulating material for the 105 DEG C wind energy cable is prepared from the following raw materials in parts by weight: 100 parts of basic raw materials consisting of ethylene-propylene rubber and an elastomer, 2-4 parts of a vulcanizing agent, 1-2 parts of an assistant vulcanizing agent, 5-8 parts of an active agent, 20-40 parts of a filling agent, 60-80 parts of filler, 3-5 parts of an anti-aging agent, 3-5 parts of an antiozonant, 0.5-3 parts of a plasticizer and 0.5-2 parts of a coupling agent. The preparation method of the insulating material comprises the following steps: (1) weighing materials; (2) premixing; (3) mixing; and (4) extrusion molding. Through a specific formula and a preparation method, the insulating material not only has good high-temperature aging resistance, but also has excellent low-temperature performance and excellent processing extrusion performance, and a good extrusion effect can be achieved under a double-extrusion process.

The invention relates to the technical field of high-voltage busbars, and discloses a high-voltage busbar which comprises a core wire bar, a composite layer, a pressure-resistant layer and a wear-resistant layer are sequentially arranged on the outer side of the core wire bar, the composite layer is arranged on the outer side of the core wire bar in a plastic coating mode and used for improving insulation, high temperature resistance and flame retardance of the busbar, the pressure-resistant layer is fixed between the composite layer and the wear-resistant layer, and the wear-resistant layer is fixed between the composite layer and the wear-resistant layer. The core wire bar is used for improving the compression strength of the busbar and is one of a copper bar and an aluminum bar; the composite layer is made of a mixed material of ceramic silica gel and mica powder; the pressure-resistant layer is made of a PI material or a mica paper material; and the wear-resistant layer is made of a TPU material. According to the high-voltage busbar, the outer side of the core wire bar is coated with the composite layer, the pressure-resistant layer and the wear-resistant layer, so that the requirements of high voltage, insulation, pressure resistance, wear resistance and the like of the busbar are met, it is guaranteed that the busbar is safely used on a high-voltage line on an automobile, the use process is stable, the service life is long, the production process is easy to operate, the material cost and the process cost are low, and the production cost is low. And the actual busbar batch production requirement is met.

The invention provides a preparation method of a novel cable sheath layer. The novel cable sheath layer comprises silicone rubber, a heat-conducting insulating material, a flame-retardant material, white carbon black, a silane coupling agent, dicumyl peroxide, silicone oil, an antioxidant, a light stabilizer and the like. The preparation method comprises the following steps: firstly, modifying a heat-conducting insulating material and a flame-retardant material to improve the dispersity and interfacial compatibility, and then uniformly dispersing filler in a silicone rubber matrix through banburying, open milling and vulcanization processes to finally form a high-performance cable sheath layer. Nanometer spherical aluminum oxide grafted hexagonal boron nitride is used as a heat-conducting insulating material, so that the heat conductivity of the sheath layer is remarkably improved, and excellent electrical insulation performance is kept. Besides, modified magnesium-rich silicate is used as a flame-retardant material, so that the cable has an excellent flame-retardant effect, and an antioxidant and a light stabilizer are combined, so that the weather resistance and the aging resistance of the sheath layer are improved. The prepared cable sheath layer is suitable for the fields of high-voltage cables, 5G communication, power transmission, aerospace, military use, rail transit and the like, and has a good application prospect.

Disclosed is a high-voltage winding (130), comprising a winding body (1310), a high-voltage coil (1320), a high-voltage insulating layer (1330), and an external insulating layer (1340). The winding body (1310) comprises a plurality of winding plates (1313, 2311, 1316); the plurality of winding plates (1313, 2311, 1316) are uniformly distributed in the circumferential direction of the winding body (1310); a wire is wound on the winding plates (1313, 2311, 1316) to form the high-voltage coil (1320); two ends of the wire form two external connections (D, X); the high-voltage insulating layer (1330) wraps the high-voltage coil (1320) and the winding body (1310); and the external insulating layer (1340) wraps the side walls of the external connections (D, X). Further disclosed is a dry-type transformer (10). The high-voltage winding (130) uses the external insulating layer (1340) to wrap the side walls of the external connections (D, X), thereby preventing the permeation of water vapor, ensuring the sealing effect, and effectively avoiding the problem of discharge of a wire outlet end.

The invention relates to the field of high-performance flame-retardant materials and discloses an ultra-light flame-retardant rubber foam material and a preparation method and application thereof.The ultra-light flame-retardant rubber foam material is prepared from modified carboxy nitrile rubber, a foaming agent, a foaming aid, a cross-linking agent, a flame retardant, inorganic filler, tackifying resin and a softening agent; the modified carboxy nitrile rubber is prepared by chemically grafting hexamethylol melamine. According to the invention, a nitrogen-containing structure is introduced into a polymer molecular chain, so that the material has intrinsic flame retardant property, high foaming ratio and light weight are realized, and the problems of density increase and performance degradation caused by high filling of a flame retardant in the traditional technology are avoided. The flame retardant property of the material reaches UL-94 V0 level, and the material is suitable for the fields of building heat preservation, automotive trim, cable sheaths and household appliance shock pads.

The utility model discloses a low-temperature resistant overhead insulated cable, comprising a conductive layer, wherein at least three groups of conductive layers are arranged, the conductive layers are tightly twisted by annealing copper wires, insulating layers are arranged outside the conductive layers, a wrapping layer is fixed outside the insulating layer by overlapping wrapping, a filling layer is filled outside the wrapping layer, a wrapping layer is fixed outside the filling layer by overlapping wrapping, a shielding layer is fixed outside the wrapping layer, an inner lining layer is fixed outside the shielding layer by aligning wrapping, a low-temperature resistant layer is arranged outside the inner lining layer, an armor layer is twisted outside the low-temperature resistant layer, a protective layer is arranged outside the armor layer, cross-linked ethylene propylene rubber is used as the insulating layer, the insulating layer has good insulation itself, and at the same time, it has a large carrying capacity, does not contain halogen, and will not emit a large amount of smoke when burned; it also has flame retardant properties and ozone-resistant stability, and can be used in a low-temperature environment of -50°C to prevent the conductive layer from being easily cracked.

The invention relates to the technical field of cables, in particular to a high-flexibility ethylene-propylene insulating rubber material for a charging pile cable and a preparation process. The composite material comprises an ethylene propylene diene monomer, a thermoplastic polyolefin elastomer, an ethylene-butylene copolymer, nanoscale magnesium hydroxide, a silane coupling agent, dicumyl peroxide, a hindered phenol antioxidant and a phosphite antioxidant. The ethylene propylene diene monomer and the ethylene-butylene copolymer form a flexible network skeleton, and the ethylene-butylene copolymer and the thermoplastic polyolefin elastomer are subjected to molecular-level blending, so that the elongation at break and the bending fatigue resistance are improved; silane coupling agent modified nano magnesium hydroxide is chemically bonded with a rubber matrix, so that the flame retardance and thermal aging resistance are enhanced, and the negative influence of filler agglomeration on flexibility is reduced; the compound antioxidant system effectively inhibits thermal oxidation degradation at high temperature, avoids insulation failure, realizes collaborative optimization of high flexibility and high heat resistance, and improves the reliability and applicability of the charging pile cable.

A high-voltage cable polypropylene insulating material is provided in the present application, wherein using a polypropylene in-reactor alloy resin as a composite material skeleton can endow the high-voltage cable polypropylene insulating material with excellent heat resistance; and a thermoplastic polyolefin elastomer can induce interface shear bands or crazes, and therefore by means of the shear bands or crazes, can dissipate the energy acted by the external force, so that the high-voltage cable polypropylene insulating material can hold an excellent mechanical strength even at a high temperature. In addition, the polypropylene in-reactor alloy resin and the thermoplastic polyolefin elastomer in said insulating material have good compatibility, and thus enable the high-voltage cable polypropylene insulating material to have relatively low bending modulus and relatively high breakdown field strength. Therefore, said insulating material has excellent toughness and electrical properties, thereby satisfying application conditions of high-voltage cable polypropylene insulating materials.

The invention provides a high-hardness easy-to-cut silicone rubber material as well as a preparation method and application thereof. The high-hardness easy-to-cut silicone rubber material comprises the following components in parts by weight: 100 parts of methyl vinyl silicone rubber, 25-40 parts of fumed silica, 1.5-3 parts of hydroxyl silicone oil, 0.8-1.2 parts of a cross-linking agent, 0.05-0.1 part of a platinum catalyst and 1-2 parts of a heat-resistant stabilizer. Through screening and synergistic compounding of specific components in the silicone rubber material, synergistic optimization of shore hardness and elongation at break of the silicone rubber material is realized, and the silicone rubber material is ensured to be free of cracks after being aged at 180 DEG C for 3000 hours and still has an excellent elongation at break retention rate after being aged.

The invention discloses a special cable for a high cold-resistant control system and a processing technology thereof, the cable structure is the special cable for the high cold-resistant control system, the special cable comprises at least two insulating wire cores, a lining layer, a shielding layer and an outer sheath from inside to outside in sequence, each insulating wire core comprises a conductor, a wrapping tape and an insulating layer from inside to outside in sequence, and the inner lining layer is arranged on the outer sheath. The insulating wire cores are mutually twisted, and the twisting gap is filled with a filling rope. The inner side and the outer side of the shielding layer are respectively provided with a wrapping layer, the insulating layer is made of cold-resistant and heat-resistant ethylene propylene rubber materials, and the outer sheath is made of irradiation ethylene propylene rubber materials. According to the application, the scheme that the insulating wire cores are twisted and then the sheath layer is coated on the outer layer is adopted, and the materials of the insulating layer and the outer sheath of the insulating wire cores are made of the ethylene propylene rubber material with high cold resistance, so that the performance of the materials of the insulating layer and the outer sheath can be effectively maintained in a high and cold environment, and the electrical performance of the cable in the high and cold environment is improved.

The invention relates to the technical field of cable processing, and discloses a magnesium hydroxide-silicone rubber flame-retardant cable filling material and a preparation method thereof.The preparation method comprises the following steps that KH-570 hydrolysate is dropwise added into magnesium hydroxide dispersion liquid, and modified magnesium hydroxide is obtained through a reaction; dispersing the modified magnesium hydroxide, PCS and a first catalyst in an organic solvent, and reacting in an inert gas atmosphere for 2-4 hours to obtain PCS-coated magnesium hydroxide; modifying the PCS-coated magnesium hydroxide with a silane coupling agent to obtain modified PCS-coated magnesium hydroxide; silicone rubber, modified PCS coated magnesium hydroxide, fumed silica and hydroxyl silicone oil are mixed to form a rubber material; and adding a cross-linking agent and a second catalyst, and reacting to obtain the flame-retardant cable filling material. According to the invention, after magnesium hydroxide is coated with PCS, the silane coupling agent is adopted for modification, and when the material encounters high temperature or flame, a firm and compact ceramic protection layer can be generated, so that the effects of heat insulation, oxygen insulation and melting and dripping prevention are achieved.

The invention discloses an anti-embrittlement flexible armored cable in an extremely cold environment. The anti-embrittlement flexible armored cable comprises a conductor, an insulating layer, a buffer isolation layer, a flexible armored layer and an outer sheath layer which are sequentially arranged from inside to outside. According to the armored cable, the structure of an existing cable is improved, the material formula of the insulating layer and the material formula of the outer sheath layer are optimized, the requirements for embrittlement resistance and high flexibility can be met, the protection performance of the armored cable can be enhanced, and aging tests show that the cable has good flexibility. The cable can meet the use requirement of long-term stable operation under the extremely cold severe condition with the temperature of-60 DEG C, has important practical significance and economic value, is reasonable in design, and is worthy of popularization and use.

The invention relates to the technical field of external insulating materials for power equipment, in particular to silicone rubber, a preparation method thereof and application of the silicone rubber in a composite insulator. The silicone rubber is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 5-20 parts of hydrophobic silicon dioxide aerogel powder, 3-15 parts of conductive and heat-conducting filler, 10-30 parts of modified aluminum hydroxide, 15-35 parts of fumed silica, 1-3 parts of a silane coupling agent and 2-5 parts of a structuring control agent, 1-4 parts by weight of a low surface energy auxiliary agent, and 0.5-2 parts by weight of a vulcanizing agent. The silicone rubber provided by the invention integrates long-acting hydrophobic anti-icing, active low-power-consumption ice melting and excellent arc ablation resistance, has long-term stability, and is especially suitable for high-voltage insulators in severe environments such as heavy ice areas and heavy dirty areas.

The invention provides a high-flame-retardant cable and a preparation method thereof, and belongs to the technical field of cables, and the preparation method comprises the following steps: S1, preparing an insulating layer-conductor material; s2, preparing an insulating layer-conductor filling composite material; and S3, putting an ethylene-vinyl acetate copolymer, an ethylene-octylene copolymer, a flame retardant and montmorillonite into the internal mixer, performing internal mixing and extrusion to obtain a sheath material, and sequentially coating the insulating layer-conductor filling composite material, the semi-conductive layer, the shielding layer and the sheath along the axial direction of the conductor to obtain the high-flame-retardant cable. According to the technical scheme provided by the invention, the purposes of good flame retardance and good smoke suppression performance of the cable are achieved.

The invention belongs to the technical field of rubber products, and provides silicone rubber for a composite insulator, a preparation method of the silicone rubber and the insulator, and the preparation method comprises the following steps: S1, mixing methyl vinyl phenyl silicone rubber and glycidyl methacrylate grafted silicone rubber in parts by weight, adding fumed silica and modified magnesium hydroxide, and uniformly stirring to obtain a silicone rubber mixture; continuously mixing, adding silicone oil, triethanolamine and a vulcanizing agent, stirring and mixing, and standing to obtain a mixed rubber material; s2, the mixed rubber material is put into an open mill to be mixed, a vulcanizing agent is added, thin passing and sheet discharging are conducted, standing is conducted, and rubber sheets are obtained; s3, putting the rubber sheet into a mold for molding, and then carrying out vulcanization reaction to obtain the silicone rubber material. The silicone rubber material provided by the invention has excellent mechanical property, flame retardant property, anti-aging property and electrical insulation property. Meanwhile, the preparation process is simple, raw materials are easy to obtain, cost is low, and wide application prospects are achieved.

A silicone rubber insulator shed material, and a silicone rubber insulator and a preparation method therefor and an application thereof. The components of the silicone rubber insulator shed material comprise silicone rubber, iron oxide, nano-montmorillonite, fumed silica, aluminum hydroxide, a silane coupling agent, a vulcanizing agent, and hydroxy silicone oil, wherein the iron oxide and the nano-montmorillonite can slow down the thermal oxidation decomposition of the silicone rubber, thus improving the hydrophobicity, hydrophobic mobility and hydrophobic recovery of the silicone rubber composite insulator, thereby solving the technical problem in the prior art that the aging decomposition resistance of silicone rubber needs to be improved.

The present invention relates to the technical field of magnetic attraction lines, and in particular, to a magnetic attraction line convenient to store, including a line body and a connector, where line cores are connected into the line body, outer surfaces of the line cores are covered with an injection molding layer, an outer surface of the injection molding layer is coated with a magnetic attraction layer, an outer surface of the magnetic attraction layer is coated with a protection layer, and an isolation and protection layer is disposed between the magnetic attraction layer and the injection molding layer. Through a coating connection between the magnetic attraction layer and the injection molding layer, and under the action of the magnetic attraction layer, a magnetic attraction connection effect of the line bodies is achieved, and then a magnetic storage effect of the line bodies is achieved.

The invention relates to the field of cable materials, in particular to a wear-resistant modified rubber cable material for a new energy automobile and a preparation method of the wear-resistant modified rubber cable material, and aims to solve the problems that an existing cable material for the new energy automobile is insufficient in wear resistance and mechanical strength, so that a cable is easy to crack, and potential safety hazards are caused. And the use requirements of the new energy automobile in a complex environment are difficult to meet. According to the preparation method, wear-resistant modified rubber, styrene-butadiene rubber and low-density polyethylene are used as matrixes, the comprehensive performance of the cable material is remarkably improved by integrating the advantages of the three materials, and then modified potassium titanate whiskers are added, so that the wear resistance and mechanical strength performance of the cable material are effectively improved; the cable can meet the use requirements of a new energy automobile in a severe environment, shows excellent protection performance, effectively prolongs the service life of the cable, and provides a cable transmission system which is longer in service life, safer and more reliable for the new energy automobile.

The invention relates to the technical field of cable sheath preparation, and discloses a cable sheath which comprises the following components in parts by weight: basic rubber materials: vinyl-terminated methyl vinyl silicone rubber and crosslinked polyethylene; the synergistic flame-retardant system is prepared from zinc borate, ammonium polyphosphate, melamine, pentaerythritol and composite modified nano montmorillonite; the nano composite additive is prepared from nano silicon dioxide, nano zinc oxide, nano boron nitride and graphene; an interface compatilizer: maleic anhydride grafted polyethylene; according to the invention, through component optimization and synergistic cooperation, on the premise of not depending on a halogen flame retardant, high flame retardance, excellent mechanical properties and stable aging resistance are realized at the same time, and strict requirements of high-end cables on safety and reliability are met. Besides, the material preparation process is simple and controllable, is suitable for large-scale production, and can be widely applied to the fields of high-rise buildings, rail transit, new energy and the like with high requirements on the performance of the cable sheath.

An insulation material for a power cable of a low-voltage wind turbine generator, and a preparation method, belonging to the technical field of wind power generation. By combining the properties of multiple raw materials and leveraging the respective strengths thereof, the present invention exhibits properties such as excellent aging resistance, high and low temperature resistance and high strength. A composite of three anti-aging agents, anti-aging agent RD, anti-aging agent MB and anti-aging agent XH-3, is used to comprehensively improve the heat resistance of the insulation. Compared with a single anti-aging agent, the anti-aging agents can have a synergistic effect, resulting in superior heat resistance, and the tensile strength and elongation at break thereof can remain at a high level after thermal aging. By means of optimization of the formula, the cable meets environmental protection requirements.