1329results about "Rubber insulators" patented technology

The invention relates to technical fields of materials, chemical engineering and electronics, in particular to a cable material with a polymer substrate and CTR effect and a preparation method thereof. The temperature sensing cable material with CRT characteristics consists of thermoplastic polymer, a filling agent, a plasticizer, functional additives, a stabilizing agent, a flame retardant, a lubricant, an antioxidant and a processing agent, has the use temperature range between -30 and 150 DEG C, and can be applied on occasions such as recoverable line-type temperature sensing cables, fire prewarning and alarm devices, temperature measurement, overheating alarm and protection and the like. The temperature sensing cable material with the CRT characteristics takes a polymer material as a substrate, and is added with multiple organic and inorganic compounds with special CTR characteristics taken as the functional additives, and has the characteristics of flexibility, and capacities of being continuously processed and being used like a common cable material.

Cable coatings having effective low-smoke emission, fire resistance and moisture resistance provided by a single layer are described. The cable coatings contain an base polymer, a oxygen containing ethylene copolymer, a fire retardant and a synergistic blend of magnesium hydroxide and aluminum hydroxide. Cables coated with the described coatings have improved wet electrical performance, and satisfactory fire performance and smoke characteristics.

The invention discloses a fire-retardant cable sheath material formulation and the preparation method thereof. The formulation comprises, by weight parts, 15 to 30 parts of chloroprene rubber, 15 to 30 parts of chlorinated polyethylene, 0.5 to 3.0 parts of zinc oxide, 0.5 to 3.0 parts of magnesium oxide, 0.2 to 1.0 parts of ethylene thiourea, 0.5 to 2.0 parts of dibenzothiazyl disulfide, 0.1 to 0.5 parts of tetramethylthiuram disulfide, 0.5 to 2.0 parts of N-phenyl-2-naphthylamine, 0.5 to 2.0 parts of stearic acid, 0.5 to 3.5 parts of paraffin, 1.0 to 5.0 parts of dioctyl phthalate, 5.0 to 15 parts of carbon black with high abrasion resistance, 5.0 to 15 parts of semi-reinforced carbon black, 3.5 to 10 parts of calcium carbonate, 2.5 to 8 parts of bis(pentabromophenyl) ether, 1.0 to 3.0 parts of antimony trioxide, and 1.0 to 8.0 parts of aluminum hydroxide. The preparation method mainly comprises the following steps: plasticating, blending, mixing, thin-passing and calendaring and extruding the sheath.

The invention relates to a ceramicized silicon rubber, which comprises 1)60-100 parts of silicon rubber, wherein a general formula is (RnSiO4-n/2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 2)20-100 parts of silicon dioxide; 3)1-20 parts of silicone oil, wherein the general formula is (RnSiO4-n/2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 4)0.1-10 parts of coupling agent and 5)20-120 parts of ceramicized powder. The above raw materials are mixed in a kneader and then vacuumized, the ceramicized powder and the coupling agent are added in the kneader and then uniformly mixed to form the bulk ceramicized rubber, and the ceramicized rubber is performed roll mixing and filtered to obtain the ceramicized silicon rubber. The ceramicized silicon rubber has the advantages that the processing is easy, the production cost is low, the ceramicized silicon rubber can be performed ablation to a ceramic shell, and can protect the burned objects from damaging.

The invention provides a low-smoke halogen-free inflaming-retarding cable material and preparation method thereof. The cable material comprises 5 to 15 parts (part by weight) of compatilizer that comprises maleic anhydride functional group grafted ethylene-vinyl acetate copolymer and maleic anhydride functional group grafted ethylene propylene terpolymer; 85 to 95 parts of base material formed by blending two or more than two of linear low-density polyethylene, ethylene-vinyl acetate copolymer and ethylene propylene terpolymer granular materials; 2 to 6 parts of composite antioxidant composed of the following antioxidants in terms of weight ratio: hindered phenol antioxidants : thiol ester antioxidants = 1 : (2 to 6); 20 to 40 parts of ammonium polyphosphate; 10 to 20 parts of pentaerythritol; 8 to 15 parts of melamine; 50 to 100 parts of composite inorganic fire retardant composed of the following fire retardants: magnesium hydroxide : zinc borate = (2 to 4) : 1; 2 to 6 parts of lubricant; 0 to 0.5 parts of metal passivator; 0 to 3 parts of crosslinking assistant agent; and 0 to 5 parts of halogen-free master batch. The invention has provided a harmless halogen-free inflaming-retarding cable material having high temperature tolerance, high tension, high elongation and high fire resistance.

The invention discloses an ethylene propylene rubber insulation material for longitudinal high-voltage watertight cables of ships and warships and a production method thereof. The method comprises the following steps: adding the ethylen e-propylene-diene mischpolymere, age resister and fire retardant into a banbury for banburying for 3.5min; adding argil, white carbon black and paraffin wax for continued banburying for 2min; adding active agent, and discharging after banburying for 1.5min; filtering the rubber compound with a three-layer filter screen (namely a 60 mesh filter screen, a 60 mesh filter screen and a 80 mesh filter screen) on a rubber filter; and beating into cornucopla on a double-roller mill, adding vulcanizer and co-crosslinker, then beating into cornucopla for 7 times, grinding and slicing after finishing the steps, and then cooling, wherein the materials are as follows in parts by weight: 100 parts of ethylen e-propylene-diene mischpolymere, 1-5 parts of vulcanizer, 1-4 parts of age resister, 15-70 parts of fire retardant, 0.5-10 parts of active agent, 10-20 parts of argil and 2-4 parts of paraffin. The prepared insulation material has the characteristics of low smoke, no halogen, fire resistance, high machinery strengthen, and high insulation resistance, good flexibility, elasticity and viscosity, and can be used for the ships and warships.

The invention discloses a high temperature resistance non halogen flame retardant cable sheath material and a preparation method thereof. The high temperature resistance non halogen flame retardant cable sheath material comprises the following components with the following parts by weight: 100 parts of ethylene-propylene-diene monomer (EPDM), 1.5-6 parts of vulcanizing agent, 1.5-6 parts of co-vulcanization agent, 0.5-5 parts of coupling agent, 4-20 parts of antiager, 4-30 parts of softener and 80-250 parts of inflaming retarding filling agent. In the invention, the halogen-free material is adopted, thick smoke, corrosive halogenide gas and other harmful substances are not generated in the process of burning; the cable sheath of the invention features excellent elasticity and tenacity, not only has obvious inflaming retarding effect, but also improves heat-resisting and anti-aging properties, can resist high temperature, and has high mechanical strength and wide application range; in addition, the production process is easy and is convenient for rubber-producing enterprises to achieve self-sufficiency.

The invention discloses a high performance rubber sheath rubber material, which comprises the following raw materials by weight part: 30-60 of ethylene propylene diene monomer rubber, 30-70 of nitrile rubber, 25-60 of a reinforcing filler, 5-10 of active agents, 3-5 of anti-aging agents, 0.5-10 of a vulcanizing agent, 0.5-3 of a promoter and 5-20 of plasticizers. The raw materials are subjected to mixing by an open mill and an internal mixer to produce a mixed rubber compound, which is then prepared into a semi-finished product extruder extrusion. The rubber material not only has good ozone resistance and weathering aging resistance, but also has excellent oil resistance and bonding performance. And under the premise of satisfying comprehensive performance, the service life of the rubber material is further improved.

The invention relates to a cable jacket rubber and a preparation method, wherein the cable jacket rubber has high elastic resilience, softness and abrasive resistance at a low temperature. The cable jacket rubber is characterized in that a base material of the rubber is formed by mixing 30 to 50 weight percent of natural gum and 50 to 70 weight percent of cis-butadiene rubber; a vulcanizing system in a rubber compounding agent is a low-sulfur high-accelerant vulcanizing system, the addition of sulfur is 0.3 to 0.6 weight percent of that of the base material of the rubbere, the addition of the accelerant tetramethylthiuram disulfide is between 1.0 and 1.3 weight percent, the addition of the accelerant N-cyclohexyl-2-benzothiazole sulfonamide is between 1.8 and 2.2 weight percent, and the addition of the accelerant diphenyl disulfide benzothiazole is between 0.6 and 0.9 weight percent. The cable jacket rubber has wide range of working temperature, and can be bent and distorted randomly without cracking at a long-term usage temperature of between 50 DEG C below zero and 70 DEG C, the impact elasticity is high and can reach 42 percent, the specific elongation is more than 350 percent, and the Akron abrasion loss is less than 2 percent, thus the cable jacket rubber is particularly suitable for wind-power generated electricity tower tube cables.

The invention discloses an ultraviolet cross-linking EPDM (ethylene propylene diene monomer) rubber cable insulation material and a preparation method thereof. The method is characterized in that: by weight, 100 portions of EPDM rubber, 100 portions to 120 portions of inorganic filling, 0.5 portion to 5.0 portions of ultrasonic initiator, 0.5 portion to 5.0 portions of polyfunctional cross-linking agent, 5.0 portions to 10.0 portions of softener, 0.8 portion to 1.2 portions of silane coupling agent and 0.01 portion to 1.0 portion of complex antioxidant are evenly mixed and extruded at the temperature of 100 DEG C to 150 DEG C, thereby obtaining the ultraviolet cross-linking EPDM rubber cable insulation material; then the wire core is fused and extruded coating to form an insulation layer or a protective coating; and ultraviolet cross linking is carried out under 200nm to 400nm of wave length and 400mW/cm<2> to 2000mW/cm<2> of light intensity. The cable insulation material has tensile strength of larger than 6.5MPa, elongation at break of higher than 300 percent and volume resistivity of higher 10<12>Omega question mark cm, and can pass a thermal aging test under the temperature of 135 DEG C for 168h.

The invention discloses a halogen-free thermoplastic elastomer composition, which is characterized by consisting of the following components in percentage by mass: 30 to 40 percent of elastomer, 15 to 30 percent of thermoplastic, 2 to 8 percent of EVA (ethylene-vinyl acetate) resin, 3 to 6 percent of compatilizer, 10 to 25 percent of plasticizer, 2 to 8 percent of inorganic filler and 5 to 10 percent of auxiliary agent. In the halogen-free thermoplastic elastomer composition and a manufacturing method thereof and environment-friendly electric wires and cables using the same, the composition does not contain harmful heavy metals, halogen and chemical substances harming human health and natural environment; and the environment-friendly new material is non-toxic and pollution-free, can be recycled, has the advantage of resisting water, cold, high temperature, oil, acid and alkali, and is widely applied in high-end cables of military industry, ships, nuclear power, wind energy, railway track traffic, magnetic suspension and the like and related fields.

A solid cable provided with an insulation layer on the outer circumference of a conductor, and impregnated with insulating oil in this insulation layer. Medium-viscosity insulating oil the viscosity of which is between not less than 10 cst and less than 500 cst at 60° C. is used as the insulating oil.

An electrical conductor comprising an electrically conducting fibre comprising carbon nanotubes and/or graphene nanoribbon and a layer of insulating material coated around the electrically conducting fibre. The insulating material substantially does not penetrate the electrically conducting fibre, or penetrates the electrically conducting fibre only to a depth that leaves a continuous conductive path along a remaining part of the electrically conducting fibre.

The invention discloses a radiation-resistant halogen-free low smoke flame retardant insulating material for cables of nuclear power plants and a preparation method. The radiation-resistant halogen-free low smoke flame retardant insulating material is prepared from the following raw materials: ethylene propylene diene rubber, phenyl siloxane rubber, magnesium hydrate, aluminium hydroxide, zinc borate, white carbon black, cerium dioxide, zinc oxide, Bis(tert-butyldioxyisopropyl)benzene, tri allyl cyanurate, 2-mercaptobenzimidazole, 2,2,4-trimethyl-1,2-dihydroquinoline, Aflux A-25, stearic acid, vinyl tris(beta-methoxyethoxy) silane, and paraffin oil by heating and mixing. The formulation and the mixture ratio are scientific and reasonable, and the process is advanced. The prepared insulating material has good radiation resistance, excellent mechanical property, good electrical property and long service life, and is a good radiation-resistant halogen-free low smoke flame retardant insulating material for manufacturing the cables of the nuclear power plants.

The invention discloses an insulating ethylene propylene rubber LSOH electric power or control cable for ships and warships and a processing method thereof. Multi-strand tinned copper wires twisted conductor is adopted and an extruded ethylene propylene rubber insulating layer is covered on the outer surface of the conductor. Three-core or four-core insulating wires are twisted together. An armorlayer is arranged between three insulating cores and a jacket layer. The outer of the armor layer is provided with the jacket layer. An inner jacket layer is arranged between four insulating cores andthe armor layer. The armor layer is arranged between the inner jacket layer and the jacket layer. The processing method comprises the steps of twisting tinned copper wires with a wire twisting machine to form a conductor, manufacturing the insulating layer outside of the conductor with an extruding machine, irradiating and cross-linking the insulating layer with an electron accelerator, twistingthe insulating cores with a cable-former, braiding the armor layer with a braiding machine, and extruding an oil-proof LSOH jacket layer outside of the armor layer. The invention has the advantages that the products meet the performance demand of the cables for ships and warships, according with the GJB1916-94 general specification for low smoke cable and flexible cord for ships and warships.

The invention discloses a butyronitrile-PVC (polyvinyl chloride) compound elastomer insulation material for wires and cables and a preparation method of the butyronitrile-PVC compound elastomer insulation material. The butyronitrile-PVC compound elastomer insulation material comprises, by weight, 100-120 parts of butyronitrile rubber, 30-40 parts of PVC resin, 2-3 parts of accelerant TMTD, 1-2 parts of accelerant DM, 1-2 parts of antiager, 2-3 parts of antiager MB, 6-8 parts of paraffin, 8-12 parts of zinc oxides, 1-1.5 parts of stearic acid, 10-15 parts of DOP (dioctyl-phthalate), 2-4 parts of gas-mixed carbon black, 30-40 parts of precipitated white carbon black and 50-60 parts of modified nano calcium carbonate. The insulation material produced has the advantages of good mechanical and physical performance, insulation performance, good high and low temperature resistance, oil resistance, solvent resistance, wear resistance, ozone resistance, ageing resistance and the like, is long-lasting, durable, environment-friendly, pollution-free and capable of meeting the requirements of modern wires and cables completely.

The invention belongs to the technical field of polymer materials and relates to a halogen-free flame retardant thermoplastic elastomer cable material. The halogen-free flame retardant thermoplastic elastomer cable material is characterized by comprising the following raw materials in parts by weight: 20-60 parts of a styrene type elastomer, 20-60 parts of polyphenyl ether resin, 10-40 parts of polyolefin, 10-50 parts of a polyolefin type elastomer, 10-50 parts of a plasticizer, 20-60 parts of a complex phosphorus-nitrogen flame retardant, 1-5 parts of a lubricating agent, 0.1-1 part of an antioxidant and 0.1-1 part of an anti-ultraviolet absorbent. The invention further discloses a preparation method of the cable material. The cable material disclosed by the invention has the characteristics of excellent processing performance, high flame-retardant grade, no toxicity, light density, good anti-tear performance, good acid and alkali resistance, good weather resistance and the like, as well as particularly prominent water resistance and anti-cracking performance. After high-temperature and high-humidity long-term aging, the cable material has no precipitate, the excellent mechanical and physical properties are kept, and the electrical properties do not change obviously.

The invention discloses a composite rubber cable material and a preparation method thereof. The rubber material is prepared by blending butadiene rubber and natural rubber. Also, components such as high-wear-resistance carbon black, mixed-gas carbon black, talcum powder, paraffin wax, zinc oxide, an antioxidant D, a promoting agent CZ, stearic acid, a vulcanizing agent TMTD, an accelerating agent DM, sulfur, and the like can be added. The composite rubber cable material provided by the invention overcomes defects of non-comprehensive performances of currently commonly used rubber cable materials such as natural rubber (NR), binary composite rubber of natural rubber and styrene-butadiene rubber (NR-SBR), chlorinated polyethylene (CPE), chloroprene rubber (CR), composition of vulcanized nitrile rubber and polyvinyl chloride (NBR-PVC), and the like. The rubber cable material has more comprehensive characteristics such as good elasticity, softness, wear resistance, and the like. The material can adapt to an extreme environment with a temperature of -50 DEG to 65 DEG C. When environmental temperature is continuously reduced, the material will not be substantially hardened, and softness and elasticity are maintained.

The invention relates to a cable shield material and a preparation method, in particular to a rubber jacketed flexible cable shield material for wind generation and a preparation method thereof. The rubber jacketed flexible cable shield material for wind generation contains chloroprene rubber, anti-aging agent, a softening agent, a reinforced filler, a coupling agent and a vulcanizator. The rubber jacketed flexible cable shield material for wind generation meets the requirement of resistance on the low temperature of 40 DEG C below zero and 2000-time twisting of H07RN-F and H07BRN4-F type wind energy cables, has the good properties of inflaming resistance, weather resistance, oil resistance, ozone resistance, chemical corrosion resistance, wearing resistance, shock resistance, water prevention, ultraviolet prevention and the like, and ensures that cables can be normally and safely used at low temperature in the open air.

The invention belongs to the fields of special rubber technologies and medium and high voltage electrical equipment, is thorough improvement on the prior art, and in particular relates to a silicone rubber insulation material applied to high voltage cable accessories in European series and a preparation method for the material. The material comprises the following components in part by mass: 100 parts of crude silicone rubber, 5 to 25 parts of reinforcing agent, 80 to 130 parts of flame retardant, 0.1 to 0.8 part of internal release agent, 0.8 to 2 parts of masterbatch, 0.8 to 2 parts of anti-structuring control agent, 5 to 15 parts of zinc oxide, 1 to 2 parts of silane coupling agent, 1 to 5 parts of hydroxy silicone oil and 0.8 to 3 parts of vulcanizing agent. Compared with the conventional ethylene propylene diene monomer (EPDM) rubber, the material has the advantages that tracking resistance and electric corrosion loss can reach TMA4.5, and the material has lasting hydrophobicity and high dielectric constant, joint strength and wet electrical property, can be subjected to injection molding, avoids the phenomenon that an electric field is easily concentrated because EPDM is non-uniformly distributed, and is high in vulcanizing speed and efficiency, and cost is saved.

The invention discloses a rare earth complex modified butadiene styrene rubber cable sheath material which comprises the following raw materials in parts by weight: 60-80 parts of butadiene styrene rubber, 10-20 parts of chlorosulphonated polyethylene, 10-20 parts of silicone rubber, 3-10 parts of coupling agent, 15-30 parts of carbon nano tube/silica composite material, 5-10 parts of modified white mica, 3-8 parts of modified quartz, 5-15 parts of modified kaolin, 3-15 parts of rare earth complex, 3-15 parts of modified starch, 5-20 parts of hemp stem core powder, 2-7 parts of benzoyl peroxide, 3-9 parts of magnesium oxide, 2-4 parts of epoxy resin, 1-4 parts of p-phenylenediamine, 1-5 parts of stearic acid, 1-3 parts of accelerant and 3-8 parts of anti-aging agent. The rare earth complex modified butadiene styrene rubber cable sheath material disclosed by the invention is high in aging resistance and high in strength, and the manufactured cable sheath is good in comprehensive performance and long in service life.

The invention discloses a uv photocrosslinking halogen free flame retarding ethylene propylene diene monomer (EPDM) cable material and a preparation method thereof. The method is characterized by uniformly mixing 100 parts of EPDM, 100-150 parts of metal hydroxid, 0.5-5.0 parts of uv-light initiator, 0.5-5.0 parts of polyfunctional group cross linker, 5.0-10.0 parts of softener and 0.01-1.0 part of compound antioxidant and consequently extruding the mixture into platy material, namely, the photocrosslinking EPDM cable material; then the EPDM cable material is covered on a cable electric lead core by melt extrusion to form an insulating layer or a sheathing layer and subsequently is radiated by uv light with the dominant wavelength of 200-400nm and the light intensity of 400-4000mW/cm for crosslinking; and the tensile strength of the obtained cable insulating layer or the sheathing layer is more than 7.0MPa, the elongation at break is more than 350 percent and the electric volume resistivity is more tan 10Omega.cm. The cable material can pass the thermal aging test at the temperature of 135 DEG C for 168h.

The invention discloses a medium-voltage ethylene propylene rubber insulating material and a preparation method thereof. The medium-voltage ethylene propylene rubber insulating material comprises the following components in percentage by weight: 15-30 percent of ethylene-propylene-diene rubber, 9-20 percent of ethylene-propylene rubber, 4-10 percent of linear low-density polyethylene, 4-7 percentof zinc oxide, 0.1-0.4 percent of stearic acid, 5-35 percent of superfine talc powder, 4-7 percent of paraffin hydrocarbon oil, 0.5-3 percent of paraffin, 10-30 percent of calcining clay, 0.1-0.9 percent of surface active agent gamma-aminopropyltriethoxysilane, 0.4-1.8 percent of antiager 4,4'di(alpha,alpha dimethylbenzyl)diphenylamine, 0.5-1.5 percent of vulcanizer dicumyl peroxide and 0.3-1.4 percent of vulcanizing agent triallyl cyanurate. By synthesizing the performance of various materials and learning from strengths to offset their weaknesses, the aims of reducing the cost and improvingthe electric performance are achieved. Tests prove that the medium-voltage ethylene propylene rubber insulating material disclosed by the invention has the volume resistivity of 1014 ohm.m and the breaking-down field strength of larger than 30KV/mm and has the advantages of excellent electric performance, higher thermal ageing performance and physical and mechanical performance, simple preparation process and strong operability.

Provided is a composition comprising a polymeric material, a filler material dispersed in the polymeric material, the filler material comprising inorganic particles and a discontinuous arrangement of conductive material wherein at least a portion of the conductive material is in durable electrical contact with the inorganic particles, and conductive material dispersed in the polymeric material.

The invention discloses high-strength, tear-resisting and antiflaming sheath rubber for a cable. The high-strength, tear-resisting and antiflaming sheath rubber for the cable is prepared from, by weight, 100 parts of chloroprene rubber, 0.5-2 parts of stearic acid, 0.5-3 parts of coupling reagent, 3-12 parts of magnesium oxide, 3-8 parts of zinc oxide, 10-40 parts of white carbon black, 5-20 parts of argil, 5-10 parts of talcum powder, 8-25 parts of fire retardant, 7-16 parts of plasticizer, 1-5 parts of anti-aging agent and 2-5 parts of accelerant. According to a preparation method of the high-strength, tear-resisting and antiflaming sheath rubber for the cable, the chloroprene rubber is plasticated for 5 minutes at the temperature of 60-70 DEG C and stands for more than 12 hours at the normal temperature, then mixing is carried out, half of the white carbon black, half of the argil, half of the talcum powder and half of the plasticizer and the stearic acid are added into plastication rubber and are evenly mixed, the other half of the white carbon black, the other half of the argil, the other half of the talcum powder and the other half of the plasticizer are added 2 minutes later, then mixing is carried out for 2 minutes, finally the accelerant and the zinc oxide are added for mixing, horizontal and longitudinal cutting is carried out, thinning is carried out six times, discharging is carried out after turn-mixing is carried out for 1 minute, and the cable sheath rubber is prepared on a slicing machine. The sheath rubber for the cable has the advantages of being high in tensile strength, high in tear strength, resistant to flame, good in flexibility, resistant to ozone and the like.

The invention discloses a high-intensity fire-proof cable insulating material comprising the following ingredients according to part by weight: 100 parts of methyl vinyl silicone rubber, 4-6 parts of glass powder, 10-20 parts of kieselguhr, 25-35 parts of mica powder, 5-15 parts of talcum powder, 3-5 parts of ferric oxide powder, 10-20 parts of kaoline, 25-35 parts of white carbon black, 4-6 parts of chloroplatinic acid and 1-3 parts of zinc oxide. The invention also discloses a preparation method of the high-intensity fire-proof cable insulating material, roller spacing and corresponding temperature can be adjusted, the methyl vinyl silicone rubber is rolled and pressed by an open mill, and then the white carbon black, the mica powder, the glass powder, the kieselguhr, the talcum powder and the kaoline are added in sequence for mixing, and then the roller spacing is adjusted for 2-3min, the ferric oxide powder, the chloroplatinic acid and the zinc oxide are added for mixing, and then the mixture is sheeted and cooled. The cable insulating material has low cost, porcelainized and fire-proof performances, and the like.

The invention discloses a high-flame-retardancy high-toughness composite modified PVC (polyvinyl chloride) rubber cable material which is prepared from PVC rubber, silicon rubber, butadiene-acrylonitrile rubber, ethylene propylene diene monomer rubber, polyethylene terephthalate, chlorinated polyethylene, linear low density polyethylene, an ethylene-vinyl acetate copolymer, trichloropropyl methylsilicone oil, modified kaolin, nano silicon carbide, nano magnesium oxide, nano aluminum hydroxide, nano silicon dioxide, zinc borate, rectorite, magnesium hydroxide, stearic acid, diisooctyl phthalate, a silane coupling agent KH-570, chlorinated paraffin, calcium carbonate, antimony trioxide, terephthalic acid, ethylene glycol, hexamethylene, a stabilizer, a plasticizer and a flame retardant. The cable material disclosed by the invention has excellent toughness and flame retardancy.

This invention relates to nuclear station cable insulation materials, which comprises the following formula: EPT rubber-acrylic resin polymer for 100; aluminum hydroxide for 50 to 90; 2-mercaptobenzimidazole for 1 to 3; dysprosium oxide for 3 to 10; boron nitride for 10 to 20; wax for 1 to 6; dicumyl peroxide for 3 to 5; zinc bloom for 5 to 8.

The invention deals with insulation with improved separability from the processed broken stone designed as single-layer or multi-layer insulation surrounding an electric conductor where the principle is that at least one layer of the insulation is made of magnetic material and at the same time at least one layer is made of electrically non-conductive material. This magnetic material is beneficially produced as a mixture of the magnetic and non-magnetic main material component while it is especially advantageous if the content of the magnetic main material component in individual insulation layers is 5 to 60% of weight and the rest to 100% consists of the non-magnetic main material component, all related to the weight of individual layers, or even better, if the content of the magnetic main material component of individual insulation layers is 10 to 30% of weight, related to the weight of individual insulation layers. The magnetic main material component is beneficially produced on the basis of magnetite —Fe₃O₄, or on the basis of ferrite with the general formula Me^IIFe₂O₄, where Me represents Co, Mn, Ni, Ca, Cu, Zn, Mg, or ferrite with the general formula Ln^IIFe₂O₄, where Ln represents noble earth elements, or on the basis of noble earth elements in the oxidation degree II, or on the basis of ferric oxide in the modification γ-Fe₂O₃, or on the basis of powder iron, or on the basis of a magnetic alloy of iron or on the basis of a mixture or alloy containing the above mentioned magnetic partial components, where advantageous magnetic alloys of iron are alloys containing at least noble earth elements, or especially advantageous magnetic alloys of iron are alloys containing at least another noble earth element and B and/or Co while advantageous metallic noble earth elements are Nd and Sm. Or the magnetic main material component is made on the basis of magnetically hard materials of the AlNiCo or FeCoCr type. The non-magnetic main material component is beneficially produced on the basis of plastic material, advantageously selected from the group of polymers or copolymers, mainly from the group of elastomers as silicone or butadienstyrene rubber or plastic materials as PVC, PE, PP, or PTFE.

The invention discloses a high-voltage wear resistant rubber insulation material and a preparation method thereof. The high-voltage wear resistant rubber insulation material comprises, by weight, 50 parts of ethylene-propylene-diene monomer, 30 parts of butadiene rubber, 20 parts of chlorinated polyethylene rubber, 40 parts of furnace black, 30 parts of calcined potter's clay, 5 parts of a silane coupling agent, 2 parts of zinc stearate, 15 parts of rubber process oil P-150, 3 parts of an antioxidant N-phenyl-N'-isopropyl-p-phenylenediamine, 3 parts of sulfur, 5 parts of dicumyl peroxide, 3 parts of a vulcanization accelerant 2,2'-dithiodibenzothiazole, 5 parts of a vulcanization accelerant zinc oxide andstearic acid mixture, 15 parts of a fire retardant decabromodiphenylethane and 0.5 parts of an antioxidant 1010. The preparation method has the advantages of simplicity, flexible technology and reasonable formula design, and he prepared high-voltage wear resistant rubber insulation material has excellent mechanical performances and an excellent electric insulation performance, has a breakdown field intensity of 42kV/mm, is difficult to breakdown in a high voltage occasion, has an excellent wear resistance, and has a DIN abrasion of 100mm<3> or less, so the service life of the insulation material is effectively prolonged.