30results about "Plastic/resin/waxes insulators" patented technology

Communications cable is provided for use in downhole wells wherein the cable will be exposed to a temperature of at least 280° C., the cable including as a component thereof a composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and melt flowable polytetrafluoroethylene, said polytetrafluoroethylene by itself having no tensile property and being present in said composition in an amount effective to enable the component to withstand this temperature, with the high temperature exposure of the cable component being effective to thermally transform the composition in the solid state, thereby obtaining epitaxial co-crystallization.

An electric cable for power transmission at low voltage has at least one conductor and an insulating coating surrounding the at least one conductor. The insulating coating has at least two insulating layers. In a radial direction from the inside toward the outside of the electrical cable, the insulating coating has at least one insulating layer made of a non-expanded polymeric material and at least one insulating layer made of an expanded polymeric material.

A thermoplastic resin composition with improved flame retardance, flow and heat deflection temperature includes a thermoplastic resin; resorcinol diphenyl phosphate; and an additive blend. The additive blend includes a combination of melamine polyphosphate and ferrocene. The thermoplastic composition reduces the amounts of resorcinol diphenyl phosphate required for effective flame retardancy. Moreover, the effective amounts of melamine polyphosphate and ferrocene do not deleteriously affect other properties of the thermoplastic composition such as Izod strength, flow properties, and heat deflection temperatures. A process for manufacturing a thermoplastic composition is also disclosed.

A foaming composition can be provided which is a fluororesin composition comprising a fluororesin and an electrical insulating whisker and which is foamed by being mixed with a foaming agent to reduce a diameter of cells. Thus, the diameter of cells of the foam obtained by foaming can be reduced. Further, a coaxial insulated cable can be provided in which an insulator layer made of this foam is arranged around a central conductor.

Compositions comprising a thermoplastic elastomer, e.g., a polyurethane, a nitrogen and/or phosphorus-based, intumescent flame retardant, e.g., a polyphosphate, a non-phosphorus-based burn synergist, e.g., carbon black or a metal oxide, and an optional olefin polymer, EVA are provided. Color-stable, halogen-free, flame retardant compositions comprising a thermoplastic elastomer polymer, a phosphorus-based flame retardant, at least 3 weight percent TiO2 and a UV stabilizer are also provided.

The present invention discloses a grafted blending oil-resistant halogen-free electric cable insulation material, which comprises, by weight, 10-20 parts of a vulcanized silicon resin, 40-60 parts of an EVA resin, 10-30 parts of polyamide, 10-20 parts of a POE grafted zinc maleate ionomer, 1-10 parts of low density polyethylene, 1-10 parts of calcium chloride, 60-90 parts of a modified flame retardant agent, 0.1-1 part of a coupling agent, and 0.5-5 parts of an antioxidant. According to the present invention, the grafted blending oil-resistant halogen-free electric cable insulation material uses the maleic anhydride grafted modified low density polyethylene, such that the electric cable is durable, can be used in the kitchen and other heavy oil places, and can still continuously work after encounter of various oil leakage conditions so as to win time for repair; and the process is simple, the use is safe, and the broad market application prospect is provided.

The polyvinyl chloride resin composition for automotive electric wire of the present invention comprises (A) 100 parts by weight of polyvinyl chloride and, incorporated thereinto, (B) 24.0-26.0 parts by weight of a trimellitic-acid-based ester plasticizer, (C) 5-10 parts by weight of a non-lead stabilizer, (D) 2-10 parts by weight of a reinforcing agent, (E) 2-8 parts by weight of an impact absorber, and (F) 0.3-1.2 parts by weight of a processing aid, and has a Shore D hardness of 68 or higher and a cold resistance, as a property of the material, of −10° C. or below.

An electrical component that includes a substrate and a polymeric layer oriented in working relation with the substrate, the polymeric layer including a low molecular mass polyimide.

The invention discloses a high-temperature-resistant insulation material applied to power equipment. The high-temperature-resistant insulation material is prepared from the following components in parts by weight: 10-30 parts of polyethylene, 2-10 parts of polyperfluorinated ethylene propylene, 7-10 parts of mica powder, 3-6 parts of butyl rubber, 3-5 parts of inorganic glass fiber, 7-8 parts of ethylene-propylene-diene-terpolymer rubber, 3-10 parts of polytetrafluoroethylene powder, 3-10 parts of alkali-free glass fiber cloth, 3-10 parts of ultraviolet light absorbents, 3-10 parts of epoxy resin, 1.5-3.5 parts of antioxidants and 0.5-5.5 parts of plasticizers. The invention provides a high-temperature-resistant insulation material applied to power equipment and a preparation method thereof. The prepared insulation material has excellent mechanical property, insulation property and high-temperature-resistant property, also has water resistance, weathering ageing resistance and high abrasion resistance, and can meet the requirements of the power equipment on high-temperature resistance and excellent mechanical property.

The invention discloses a high-wear-resistant transformer insulation paper, which is prepared from the following raw materials by weight part: 10-13 of nano-titanium dioxide, 3-4 of nano-silica, 2-3 of phenolic resin, 500-550 of a pulp board, 1-1.3 of sodium carboxymethyl cellulose, 2.4-2.6 of montmorillonite, 4.5-5 of polypropylene fiber, 0.5-0.7 of trihydroxy polyether, 0.3-0.5 of 1, 3-dimethyl-2-imidazolinone, 1.2-1.5 of calcium molybdate and a proper amount of deionized water. The insulation paper provided by the invention has the characteristics of simple preparation method, good insulation effect, simple operation, excellent wear-resistant, moisture-proof, sterilization and other effects, and is worth popularizing.

The invention relates to a data line and particularly relates to a flexible data line. The flexible data line includes multiple conductors, a ground wire, a filler, a shielding layer, a braiding layer and an outer sheath, wherein the multiple conductors are soft copper wires, each of the multiple conductors is provided with an insulation layer, the multiple conductors, the ground wire and the filler are externally wrapped in the shielding layer, the shielding layer is externally wrapped in the braiding layer, and the braiding layer is externally wrapped in the outer sheath. The flexible data line has advantages of good shielding effect, easy bending, small volume, convenient carrying and large tension strength.

The invention provides a high voltage direct current cable insulating material and a preparation method thereof, wherein the high voltage direct current cable insulating material comprises a main material and an auxiliary material, the main material is a low density polyethylene resin, and the auxiliary material comprises a polystyrene resin, a cross-linking agent and an antioxidant. Compared withthe common cross-linked polyethylene, the high voltage direct current cable insulating material of the invention has the following characteristics that the direct current breakdown field strength isincreased within the temperature range of 30-90 DEG C, the direct current breakdown field strength is improved by 72.9% at the temperature of 70 DEG C, and the direct current breakdown field strengthis improved by 43.7% at the temperature of 90 DEG C.

The invention belongs to the field of chemical engineering, and particularly relates to a polyurethane cable insulating material and a preparation method thereof. The polyurethane cable insulating material comprises a component A and a component B, wherein the component A is prepared from the following components by weight: polyether polyol DMN-500, polymer polyol POP-200, polyether polyol DDL-1000, water, a foam stabilizer, a tin catalyst, an amine catalyst, filler and a physical foaming agent, and the component B is a modified black material. The preparation method comprises the following steps of: adding the raw materials of the component A into a stirrer, uniformly mixing the raw materials, adjusting the constant material temperature to 25+/-2DEG C, adjusting the rotating speed of thestirrer to 4000r/min, pouring the component B preheated to 25+/-2DEG C into the component A, performing stirring for 4-5s, pouring the mixed material into a mold, and conducting curing for 24h to obtain the product. The polyurethane cable insulating material provided by the invention has the advantages of simple processing technique, high production efficiency, oil resistance, corrosion resistance, low temperature resistance, favorable flexibility, high tensile strength, high tear strength and the like.

The invention relates to a cable, and especially relates to an elevator cable. The elevator cable comprises multiple conductors and an insulator coating the conductors. The insulator is a carbon fiber insulator. Multiple accommodating cavities used for accommodating the conductors are formed in the insulator, the accommodating cavities are independent cavities which are separated from one another and are not intercommunicated, the cross section shape of the cavity body of each accommodating cavity is the same with the cross section shape of the corresponding conductor, and the inner surface of each accommodating cavity closely fits the outer surface of the corresponding conductor. Compared with the prior art, as the carbon fiber material has higher strength and better flexibility than the traditional PVC material, the insulator is effectively prevented from wearing, cracking and aging when the cable is bent, the service life of the whole cable is prolonged safely and effectively, and insulating layers coating the surfaces of the conductors are removed.