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1329results about "Rubber insulators" patented technology

Low-smoke halogen-free inflaming-retarding cable material and preparation method thereof

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.
Owner:ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI +2

Ethylene propylene rubber insulation material for longitudinal high-voltage watertight cable of ships and warships and production method thereof

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.
Owner:嘉兴君宏光学有限公司

Cable jacket rubber and preparation method

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.
Owner:WUXI HUAMEI CABLE

Insulating ethylene propylene rubber LSOH electric power or control cable for ships and warships and processing method thereof

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.
Owner:NANJING QUANXIN CABLE TECH

Halogen-free flame retardant thermoplastic elastomer cable material and preparation method thereof

InactiveCN104530626ANo significant change in electrical propertiesGood compatibilityRubber insulatorsPlastic/resin/waxes insulatorsElastomerPolymer science
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.
Owner:JIANGSU ZHONGLI GRP CO LTD

Silicone rubber insulation material applied to high voltage cable accessories in European series and preparation method for material

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.
Owner:深圳市罗庚电气有限公司

Medium-voltage ethylene propylene rubber insulating material and preparation method thereof

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.
Owner:JIANGSU HENGTONG POWER CABLE +1

High-strength, tear-resisting and antiflaming sheath rubber for cable and preparation method thereof

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.
Owner:上海驰程化工工贸有限公司

Insulation of conductors with improved separability from processed broken stone

InactiveUS20090277663A1Considerable disadvantageReduce riskRubber insulatorsPlastic/resin/waxes insulatorsMulti-layer insulationOxide
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 MeIIFe2O4, where Me represents Co, Mn, Ni, Ca, Cu, Zn, Mg, or ferrite with the general formula LnIIFe2O4, 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.
Owner:AUSTIN DETONATOR

High-voltage wear resistant rubber insulation material and preparation method thereof

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.
Owner:KUNSHAN FENFA INSULATING MATERIALS
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