69results about How to "Good electrical insulation" patented technology

The invention discloses a fire-resistant ceramic silicone rubber, a preparation method of the fire-resistant ceramic silicone rubber and application of the fire-resistant ceramic silicone rubber and in wires and cables. The rubber comprises 100 parts of methyl vinyl silicone rubber, 30-80 parts of carbon-white, 9- 40 parts of alumina, 1.5-8 parts of structure controlling agent, 3-5 parts of sintering additive, 0.25-1.5 parts of surface treating agent and 0.5-2 parts of crosslinking agent. The preparation method is as follows: covering rubber on and milling uniformly the methyl vinyl silicone rubber, feeding the carbon-white, the alumina, the surface treating agent, the structure controlling agent, the sintering additive and the crosslinking agent in turn, remlling the stand sizing material to recover plasticity, so as to obtain the fire-resistant ceramic silicone rubber provided by the invention. The fire-resistant ceramic silicone rubber provided by the invention has the characteristics of compact ceramic body, stable structure, stable fire-resistance property and good insulation property.

The invention provides a photocuring thermocuring resin composition, dry membrane, cured product and printed circuit board. An alkali developable photocuring thermocuring resin composition contains (A) an epoxy resin, (B) a carboxyl-contained resin and (C) a photopolymerisable initiator, the epoxy resin (A) has a mixture of a bifunctional biphenyl epoxy resin (A-1) with a structure shown as the general formula (I) and an epoxy resin (A-2), the epoxy resin (A-2) is at least one epoxy resin with the softening point of 40 to 100 DEG C and the weight per epoxy equivalent of 180 to 300, selected from a bisphenol A type epoxy resin, a bisphenol A phenolic varnish type epoxy resin and a diphenol phenolic varnish type epoxy resin, The epoxy resin (A-1) is less than the epoxy resin (A-2). In the chemical formula 1, R is H or CH3.

The invention discloses high-content fiberglass-reinforced halogen-free flame-retardant PC (polycarbonate) composite and a preparation method thereof, comprising the following components according to percent by weight: 50-60% of polycarbonate, 34-45% of fiberglass, 2-5% of a toughener, 8-20% of a flame retardant, 1-3% of a flame-retardant synergist, 0.1-1% of a lubricant, and 0.1-1% of an antioxidant; the polycarbonate is a mixture of common polycarbonate and siloxane copolymer. The polymer is formed of PC (polycarbonate) and siloxane, PC is amorphous resin with good performance, and the siloxane copolymer has the advantages of low temperature resistance, chemical corrosion resistance, good dielectric property and the like; the siloxane-PC copolymer has the advantages of both the siloxane copolymer and PC and has reduced stress cracking performance and gap sensitivity, improved low temperature impact performance, and improved weathering resistance.

This invention relates to an alarm for testing fatigue of drivers composed of a glass with a reflection fiber shift sensor and an intelligent control system, which takes the expression of fatigue of the eye part as the primary standard to set up a math model to monitor the flash frequency of eyelid, the close time, running of eye balls and pupil contraction and expansion so as to emit acousto-optical warning or force it stopping.

The invention discloses an epoxy resin-enhanced laminated insulating profile. The epoxy resin-enhanced laminated insulating profile comprises modification polymers and a reinforcing material, wherein the modification polymers include epoxy resin, a curing agent, a promoting agent, a flame retardant, a wetting dispersant and a solvent; the reinforcing material is a fiber material; the components of the modification polymers are mixed to form a modification polymer solution, the reinforcing material is soaked into the modification polymer solution and is finally subjected to hot press molding to form the epoxy resin-enhanced laminated insulating profile. The epoxy resin-enhanced laminated insulating profile is integrated with lightness, flame retardance, corrosion resistance and insulativity, has extremely high mechanical property, excellent electrical insulation property and halogen-free flame retardance, is environmentally friendly, is high in use safety and can be applied to industries and fields including State Grid Corporation of China, new energy resources, energy conservation, consumption reduction and track traffic which have high requirements to material performance and special working conditions and environments.

The invention provides basalt fiber and glass fiber mixed reinforced resin, as well as a preparation method and application thereof, and relates to the technical field of composite materials. The preparation method comprises the following steps: adding a coupling agent into a graphene oxide solution to treat mixed fiber consisting of basalt fiber and glass fiber, and carrying out the low temperature plasma process to obtain a modified reinforced material; preparing the basalt fiber and glass fiber mixed reinforced resin from the modified reinforced material and nano-zirconia-blended thermosetting resin through a curing molding process. The preparation method is simple in process; a fiber reinforcing body and resin are both subjected to certain modification treatment, so that the reinforced resin is extremely high in consistency; meanwhile, with the excellent characteristics of the basalt fiber and the glass fiber, the reinforced resin is high in mechanical property and corrosion resistance, can be applied to the field of building materials, and has a good development and application prospect.

The invention relates to emulsion resin for high-humidity film resistor cathode electrophoresis paint. The emulsion resin is characterized by mainly comprising the following components of (i) functional modified epoxy resin A and (ii) functional modified epoxy resin B, wherein the functional modified epoxy resin A is obtained by amine modification of epoxy resin prepared by bisphenol A epoxy resin and 8-hydroxyquinoline and containing a quinoline structure, bisphenol A chain extension and amine modification are conducted on epoxy resin which is prepared by basic epoxy resin and toluene diisocyanate and contains oxazolidinone rings, and therefore the functional modified epoxy resin B is obtained. According to the emulsion resin and a preparing method of the emulsion resin, the functional resin containing an oxazolidinone structure is introduced to the electrophoresis paint and throwing power, measured through a Ford box method, of the emulsion resin is larger than 21 cm.

An epoxy impregnated resin and a preparation method thereof are disclosed. The epoxy impregnated resin is characterized by being composed of following raw materials in parts by weight: 32 to 35 parts of epoxy resin, 12 to 14 parts of terpolycyantoamino-formaldehyde resin, 2 to 3 parts of benzene dimethylamine tripolymer, 6 to 8 parts of phthalic anhydride, 1 to 2 parts of hydroquinone, 1 to 2 parts of tert-butyl hydroperoxide, 8 to 10 parts of methyltrichlorosilane, 1 to 2 parts of methyl tin mercaptide, 5 to 7 parts of styrene, 3 to 4 parts of vinyl carboxylate, 1 to 2 parts of nitrodracylic acid, 40 to 45 parts of xylene and 4 to 5 parts of film forming agent. The impregnated paint has the advantages of high temperature and high damp resistance, good electric insulation property, good toughness, high heatproof grade, and high mechanic strength. Heat conductivity of the impregnated resin is improved, so the expoxy impregnated resin can work at the temperature of 200 DEG C for a long term, and work at the temperature of 220 DEG C for a short term. The expoxy impregnated resin can be applied to the insulation systems, which have high requirements on heatproof grade, of motor train units motors and subway motors.

The invention discloses mica type fireproof wear-resisting air-guiding wallpaper comprising a base layer and a pattern layer. The pattern layer is arranged on the base layer. The mica type fireproof wear-resisting air-guiding wallpaper is characterized in that an air guiding layer is arranged below the pattern layer and is formed by arrangement of a plurality of rows of air guide holes; a fireproof light-transmitting film is arranged on the pattern layer, a wear-resisting layer is arranged on the fireproof light-transmitting film, an adhesive sticker layer is arranged below the base layer, and a release paper layer is arranged below the adhesive sticker layer; the base layer is made of mica sheet materials, and the wear-resisting layer is made of polyethylene materials; the thickness of the fireproof light-transmitting layer is 0.4mm, the radius of each air guide hole is 0.03mm, and the thickness of the base layer is 0.1mm. The mica type fireproof wear-resisting air-guiding wallpaper has the advantages that electrical insulating property is high, electrical conductivity is low, and safety coefficient is high; fire prevention effect is good, and property losses are reduced; light-transmitting effect is achieved, bubbles are easy to discharge, and service life is long; wear of the pattern layer of the wallpaper can be prevented.

The invention discloses a mildew-preventing rubber which comprises the following components in parts by weight: 20-50 parts of chloroprene rubber, 30-60 parts of natural rubber, 2-5 parts of asphalt, 10-15 parts of magnesium stearate, 5-10 parts of magnesium oxide, 1-5 parts of clay powder, 20-40 parts of conductive carbon black, 5-8 parts of bi-lead tetraoxide and 1-5 parts of paraffin wax. Compared with the prior art, the mildew-preventing rubber has the advantages that the chloroprene rubber and the natural rubber are adopted as main raw materials, because the natural rubber has the characteristics of excellent tensile strength, good flexibility at low temperature and good electric insulation, the chloroprene rubber has the advantages of fire resistance, atmosphere corrosion resistance, mildew prevention, heat resistance and the like; the mildew preventing effect is greatly improved due to the addition of magnesium stearate; and excellent mechanical and physical properties are achieved.

This invention relates to a process of preparing capsule-like nanometer grade material. First prepare a kind of compound nanometer formwork; then use this formwork to pack material. The compound formwork is formed by the way of CVDP which is depositing PPX or derivate on the inner wall of AAO. And it is a porosity and hollow AAO / PPX formwork. Fill it by other material and seal the extremity, drop the AAO. This material can be used for catalyst transporting, drug releasing, coaxial cable and so on.

The invention provides a preparation method of a polyfluortetraethylene medium-pressure casing pipe. The medium-pressure casing pipe prepared by the method has corrosion resistance, temperature resistance, voltage resistance, can satisfy the machining requirements on the medium-pressure casing pipe, and has low cost. The preparation method comprises the step of carrying out compression molding on suspension polyfluortetraethylene; the compression molding comprises three steps of premolding, sintering and cooling, wherein in sintering process, heat preservation is carried out for 0.8-1.2h after the temperature rises to 130-170 DEG C from the room temperature at a constant speed; then heat preservation is carried out for 0.8-1.2h after the temperature rises to 235-265 DEG C at a constant speed; subsequently heat preservation is carried out for 0.8-1.2h after the temperature rises to 310-320 DEG C at a constant speed; then heat preservation is carried out for 0.8-1.2h after the temperature rises to 325-335 DEG C; and finally heat preservation is carried out for 1.9-2.4h after the temperature rises to 360-380 DEG C at a constant speed.

The invention discloses a modified resin composite. The modified resin composite is prepared from, by weight, 31-37 parts of bismaleimide, 28-33 parts of diaminodiphenylmethane, 25-31 parts of bisphenol-A-type epoxy resin, 4-9 parts of alkali-free glass fiber cloth, 3-5 parts of silane coupling agent and 1-3 parts of antioxidant. The modified resin composite is excellent in electrical insulation property, good in toughness, resistant to high temperature, excellent in mechanical property and capable of being widely applied to electrical insulating materials, abrasion-resistant materials, aerospace materials and the like.

The invention discloses a molten tin protective agent. Based on the total weight of the protective agent, the protective agent comprises the following components: 10 to 40 percent of long-chain fat acid ester having a molecular weight between 300 and 1,000, 5 to 80 percent of long-chain fat acid having a molecular weight between 280 and 1,200, 5 to 25 percent of long-chain fatty hydrocarbon having a molecular weight between 900 and 3,500, and 5 to 30 percent of high-viscosity dimethicone, wherein the viscosity at 20 DEG C of the high-viscosity dimethicone is 2,000 to 50,000cps. The molten tin protective agent is environment-friendly, smokeless, odorless, nontoxic, noncorrosive to equipment and simple and convenient in operation, has long-lasting actual effect and antioxidant and reducing functions, and the surface insulation resistance is higher than 1*10<13>omega. When the molten tin disclosed by the invention is used, the solder and power can be saved, a molten copper ratio can be lowered, the welding quality of electronic products can be improved and the insulativity and use reliability of electronic products and electrical appliances can be guaranteed.

The invention relates to an FBG (fiber bragg grating) stay cable force monitoring sensor based on frequency method, and a sensing method. The monitoring sensor employs an FBG acceleration sensor, andthe FBG acceleration sensor consists of a fiber internal engraved optical grating, fiber signal leading-out ports, a cantilever device, and a mass block. The fiber internal engraved optical grating isfixed through the cantilever device, and two ends of the fiber internal engraved optical grating extend to form fiber leading-out lines. The fiber leading-out lines are led out of the fiber signal leading-out ports which are symmetrically disposed at two ends. One end of the cantilever device is fixedly provided with the mass block through a limiting screw. The sensor is installed on the surfaceof a stay cable through a dedicated pedestal and the limiting screw, so as to capture a vibration signal of the stay cable. Moreover, the sensor is provided with dedicated visual application software,and a set of long-term online monitoring system is formed. The sensor is convenient to install, can adapt to a complex environment and the remote signal transmission, and is good in data stability.

The invention discloses a beryllium-based liquid cladding layer based on a silicon carbide tube; a U-shaped first wall processed by low-activation steel is welded with an upper / lower cover plate, a reinforcing plate and a cooling water inlet header to form a plurality of cavities, and the cavities are supported by a back plate. A high-temperature and high-pressure water cooling agent is introducedinto a parallel first wall cooling water flow channel in the U-shaped first wall, so that the first wall of the cladding layer is cooled. A neutron multiplying agent for beryllium titanium alloy processing is arranged in the cavities, the silicon carbide lithium lead flow channel penetrates through a reinforcing plate and the neutron multiplying agent, lithium lead rapidly flows in the silicon carbide flow channel, and cladding layer tritium production and multiplication area heat removal are achieved. The cladding layer tritium propagation rate can be greater than 1.2 through reasonable proportioning of the liquid lithium lead and the beryllium titanium neutron multiplying agent; a silicon carbide tube which is resistant to high temperature and corrosion and good in electrical insulationis adopted as the lithium lead flow channel, the problems of the MHD effect and corrosion in the cladding layer can be effectively avoided, and the cladding layer outlet temperature and the fusion reactor thermoelectric conversion efficiency are improved.

The invention discloses a power distribution cabinet panel which comprises an aluminum copper alloy base plate. A glass fiber layer is adhered to the inner side of the aluminum copper alloy base plate through an engineering adhesive, and the aluminum copper alloy base plate is 3 mm to 6 mm wider than the edge of the glass fiber layer. A PE protection film is adhered to the surface of the inner side of the aluminum copper alloy base plate, and a PVC protection film is adhered to the surface of the outer side of the aluminum copper alloy base plate. The engineering plastics, namely the aluminum copper alloy base plate and the glass fiber layer, are combined, and a glass fiber reinforcement polyester material has good electrical insulating property and adhesion property and higher mechanical strength and heat resistance, is resistant to common acid-base, organic solvents and mould and is anti-ultraviolet. A power distribution box body made from the material has high strength and has the effects of impact resistance, corrosion resistance, heat preservation, heat insulation and the like, acute changes of the temperature inside and outside the box can be retarded, moisture condensation in the box body due to sudden climatic change can be effectively prevented, accordingly condensation phenomena are decreased, and the working environment of all devices in the box body is effectively ensured.

To obtain an electrically insulating polyurethane resin composition having excellent flame retardance and resistance against hydrolysis, and having little possibility to cause environmental problems. The electrically insulating polyurethane resin composition comprises an electrically insulating polyurethane resin, a halogen-free phosphorus type flame retarder, and at least one type agent for preventing hydrolysis selected from the group consisting of a metal hydroxide, a metal oxide and a metal carbonate.

The invention relates to the technical field of polyurethane pouring sealant preparation, and discloses a polyurethane pouring sealant capable of effectively improving the heat conduction efficiency and a preparation method thereof. Micrometer level aluminum nitride ceramic particles with a high thermal conductivity coefficient are added into the raw material of polyurethane resin; at the same time, micrometer level MgO particles with a gelling effect are added; and all components carry out crosslinking curing reactions under the action of a silane coupling agent, a titanate coupling agent, afumed silica anti-settling agent, and an isophorone diisocyanate curing agent to prepare the polyurethane pouring sealant. Solved is the problem that in the prior art, a conventional polyurethane pouring sealant has an excellent electro-insulation performance but cannot effectively dissipate the heat generated by an electronic component sealed by the polyurethane pouring sealant.

The invention discloses a solar battery backboard material with high weather resistance and a preparation method thereof. The solar battery backboard material comprises the following components in parts by weight: 45-50 parts of PET, 25-30 parts of PETG, 1-2 parts of glass micro-powder, 10-15 parts of a nano-material, 0.8-1.5 parts of an ultraviolet absorbent, 2.5-3 parts of a light stabilizing agent GW-540, 1-2 parts of an anti-aging agent, 0.6-1 part of antioxidant and 3-4 parts of a stabilizing agent. The solar battery backboard material with high weather resistance prepared by the invention is high and reliable in electrical insulation property, oxygen barrier performance, water barrier property and anti-aging property, so that the high weather resistance is represented, and various types of bad weather conditions can be endured. The preparation method is simple in process, and low in cost; the service life of the solar battery can be prolonged.

The invention relates to a solar cell rear panel which comprises a PET (polyester) substrate, wherein a fluorine coating layer is applied to the front surface of the PET substrate; and a modified polyvinyl chloride film layer pasted by an adhesive layer is arranged on the rear surface of the PET substrate. The solar cell rear panel is produced by the steps of stirring the fluorine coating, applying the fluorine coating, drying the fluorine coating, stirring the adhesive, applying the adhesive, stirring and drying the adhesive, compounding the modified polyvinyl chloride film, winding, slitting and checking. The solar cell rear panel has the advantages as follows: the modified polyvinyl chloride film is taken as an outer protection layer of the solar cell rear panel as the modified polyvinyl chloride film has the characteristics of good mechanical property, heat resistance, self-extinguishing property, wear resistance, chemical resistance, penetration resistance, oxygen and carbon dioxide barrier property, boiling resistance and electric insulativity, so that the overall mechanical property, the electric insulativity and the scratch resistance of the rear panel are improved; the real panel is easy to process; and the service life of the rear panel is prolonged.

The invention relates to an epoxy impregnating varnish and a preparation method thereof. The epoxy impregnating varnish is characterized by being prepared from the following raw materials in parts by weight: 32-35 parts of epoxide resin (E-51), 5-7 parts of 2-amido-2-methyl-1-propyl alcohol, 1-2 parts of morpholine, 4-6 parts of polyisobutylene, 2-3 parts of m-xylylenediamine, 6-8 parts of maleic anhydride, 1-2 parts of para-benzoquinone, 3-5 parts of methyl trichlorosilane, 2-3 parts of acrylonitrile, 1-2 parts of fatty alcohol-polyoxyethylene ether phosphate, 3-5 parts of vinyl tri(beta- methoxyl oxethyl) silane, 1-2 parts of methyl ethyl ketone peroxide, 32-35 parts of dimethylbenzene and 4-5 parts of film-forming agents. The epoxy impregnating varnish disclosed by the invention has the advantages of high temperature and high humidity resistance, good electrical insulation property and high mechanical strength, improves the heat conduction, can work at 200 DEG C for a long time and work at 220 DEG C for a short time and meets the requirements of design.

The invention belongs to the technical field of stabilizing agents, and especially relates to an environmentally friendly stabilizing agent for new energy charging cables. The stabilizing agent at least comprises following components in percentage by weight: 3 to 15% of auxiliary stabilizing agent A, 5 to 15% of main stabilizing agent B, 15 to 25% of main stabilizing agent C, 15 to 62% of hydrotalcite, 2 to 12% of antioxidant D, 1 to 15% of modifier S, and 1 to 8% of surfactant. Compared with the prior art, cables containing the stabilizing agent have an excellent high temperature resistant performance and excellent electro-insulation performance and completely meet the requirements on electro-insulation of new national standards. Moreover, a high temperature resistant polyvinyl chloride material prepared from the stabilizing agent can be used to prepare the insulation layer and sheathing layer of cables; and the prepared cables have the advantages of good wear resistant performance, high flexibility, tear resistant property, good weatherability, low cost, and environmental friendliness.

The invention discloses a phase change material for thermal management of a communication base station battery. The phase change material comprises a battery pack case, wherein a box body cover is arranged above the battery pack box body; phase-change material energy storage rods are arranged among the four battery packs. A movable groove is formed in an inner cavity of the phase-change material energy storage rod; a telescopic mechanism is arranged in an inner cavity of the movable groove; the phase change material energy storage rod comprises a first heat conduction silicon wafer, a shell, an arc wall and a phase change material. Arc walls are arranged on the four sides of the shell. First heat conduction silicon wafers are attached and fixed to the outer walls of the four arc walls. A phase change material is filled between the shell and the movable groove. According to the phase change material for thermal management of the communication base station battery, after the phase-changematerial absorbs heat and is saturated, the inner cavity of the stretching column contacted with the second heat-conducting silicon wafer is heated to expand to form an air pressure difference, the telescopic rod is pushed to move upwards in the inner cavity of the stretching column, the contact plate is contacted with the graphite layer at the bottom of the box cover for secondary heat dissipation, and heat management is performed on the battery pack.

The invention discloses an SiC-POSS-EP heat-conduction hybrid material. The SiC-POSS-EP heat-conduction hybrid material is characterized by being prepared from the following components in parts by weight: 40-80 parts of epoxy resin EP, 30-60 parts of a curing agent, 0.1-10 parts of functional POSS (polyhedral oligomeric silsesquioxane) and 1-20 parts of silicon carbide (SiC). The invention further discloses a preparation method of the SiC-POSS-EP heat-conduction hybrid material. The SiC-POSS-EP heat-conduction hybrid material and the preparation method thereof disclosed by the invention have the beneficial effects that an organic material namely a functional POSS material and an inorganic material namely SiC are adopted, and the surface of POSS contains a large quantity of functional groups, so that the POSS material can be well compatible with matrix resin or chemically reacts with the matrix resin; the SiC has the advantages of being high in hardness, resistant to high temperature, good in heat conductivity, good in electrical insulating properties and the like; besides, the POSS can improve the quality of the interface of SiC heat conduction fillers and the epoxy resin matrix, and reduce the reduction of interface thermal resistance, so that the heat conductivity of materials is improved; the POSS and the SiC are in synergistic effects, so that the heat resistance, the mechanical properties, the dielectric properties and the heat conductivity of the matrix are finally improved; besides, compared with pure epoxy resin and SiC filling epoxy resin modified by common coupling agents, the SiC-POSS-EP heat-conduction hybrid material has the advantage that the impact strength, the bending modulus, the dielectric properties and the glass transition temperature particularly the heat conduction properties are greatly improved to a certain degree.

The invention belongs to the technical field of CPU cooling, and discloses an aluminum-copper explosion cladding CPU cooling fin device. The aluminum-copper explosion cladding CPU cooling fin device comprises a fan, a cooling fin, a cooling copper plate, an explosion cladding layer, heat conduction silica gel and a CPU. The cooling copper plate is arranged over the CPU, arc notches are formed in the two sides of the lower end of the cooling copper plate, and the space between the cooling copper plate and the CPU is filled with the heat conduction silica gel. The cooling fin is arranged over the cooling copper plate and comprises a cooling fin base and cooling fin bodies, the cooling fin bodies are evenly and perpendicularly arranged on the cooling fin base, and the cooling fin base is an aluminum plate. The cooling fin bodies comprise the straight fin bodies and the forked fin bodies, and the forked fin bodies are arranged among the straight fin bodies. Each forked fin body comprises two upper short fin bodies and a lower long fin body, wherein the short fin bodies are symmetrically arranged above the long fin body. The explosion cladding layer is arranged between the cooling copper plate and the cooling fin base. The fan is arranged above the cooling fin and blows air towards the cooling fin. The aluminum-copper explosion cladding CPU cooling fin device is high in bonding strength and good in cooling effect.

The invention provides a laminated paper honeycomb composite material. The section structure thereof includes a surface layer, a transition layer, an intermediate layer and a transition layer from top to bottom, wherein the paper honeycomb material is adopted to be the intermediate layer, and the plastic sheets are adopted to be the transition layers. The invention also provides the method for preparing the laminated paper honeycomb composite material, which can satisfy the conditions such as once-forming of products, no gluewater in procedures and so on. The laminated paper honeycomb composite material has the characteristics of honeycomb structure, no gluewater in procedures and so on; and the material also has the advantages of light weight, high strength, high-temperature resistance, water resistance, corrosion resistance, environmental protection, bacteria prevention, mildew prevention and so on. The characteristics of the material, such as energy absorption, thermoplastic reforming, damping and shock absorption during collision and so on, meet the requirements of development in the prior motor industry.

The invention discloses a refractory power flexible cable. The refractory power flexible cable comprises a cable core consisting of at least one insulated wire core, a refractory layer encircled on the cable core and an external protection layer wrapping the refractory layer in an extruding manner, wherein the insulated wire core comprises a conductor produced by a conductive material and a refractory insulation layer wrapping the outer layer of the conductor in an extending manner, a gap between the insulated wire core and the refractory layer is filled with a high-temperature filling rope, the refractory layer adopts a ceramic fireproof and refractory silicone rubber and high temperature-resistant glass fiber cloth composite belt layer, and double layers are overlapped and bound on the cable core in opposite positions. The cable disclosed by the invention is excellent in electric insulation performance, good in softness, resistance to high temperature and low temperature, and excellent in fireproofness and fire resistance; the cable is further simple in processing technology and convenient to transport and mount.

The invention particularly relates to a polycarbonate insulating heat-conducting composite material. The polycarbonate insulating heat-conducting composite material particularly comprises an insulating heat-conducting composite material, an enhanced matrix material and a functional aid, wherein the insulating heat-conducting composite material is an epoxy resin and polycarbonate composition; the enhanced matrix material is glass fiber, short carbon fiber and boron carbide. The polycarbonate insulating heat-conducting composite material provided by the invention has high heat conductivity, high electric insulating property and excellent friction resistance.