19results about "Mica" patented technology

The invention discloses a production method of a high-structural-strength insulating steel tape armored multi-core power cable. The power cable comprises a conductor unit and an insulating layer from inside to outside, wherein the conductor unit is formed by twisting and pressing a conductor with a copper base material, the conductor unit is wrapped outside the conductor, the overlapping rate of the conductor unit is larger than or equal to 50%, and the insulating layer is formed by semi-conductive ceramic silicone rubber and / or crosslinked polyethylene. The double-layer wrapping tape is composed of ceramic silicone rubber filling strips and assists the insulating core wires to be twisted into a cable and is of a filling structure; an inner sheath made of a ceramic silicone rubber material; the composite armor layer is composed of an inner-layer galvanized steel band and an outer-layer stainless steel band; the buffer layer is composed of an aramid fiber woven mesh or a ceramic fiber belt; and the outer sheath is composed of ceramic silicone rubber or a low-smoke halogen-free flame-retardant material of which the oxygen index is greater than or equal to 40. The cable is high in structural strength, good in temperature resistance and high in impact resistance, high-temperature mechanical locking is achieved through tension-controlled double-layer reverse wrapping, and the performance of the cable is greatly improved.

The invention relates to the technical field of fireproof cables, in particular to a flexible fireproof cable with staggered cooling runners, which comprises a fireproof cable body, and the fireproof cable body comprises a stranded copper conductor, a conductor insulator, a cabling, an argon arc welding corrugated copper sleeve and a halogen-free flame-retardant polyolefin outer sheath from inside to outside. And the outer side of the fireproof cable body is sleeved with an externally-hung monitoring flow guide device at the joint positions at the two ends. According to the flexible fireproof cable with the staggered cooling flow channel, conductor insulation is formed by a polyester belt, a double-sided synthetic mica belt and a conductor single-sided synthetic mica belt, and a cabling is formed by a halogen-free flame-retardant filling rope, a cabling single-sided synthetic mica belt and a halogen-free flame-retardant belt to form a flame-retardant material; the flame-retardant effect of the whole cable can be greatly enhanced, and secondary pollution is avoided; and an argon arc welding corrugated copper sleeve is arranged between the cabling and the halogen-free flame-retardant polyolefin outer sheath, so that the fireproof cable body has certain flexibility, and a serial cavity can be formed in the fireproof cable body.

The application relates to the technical field of insulating materials, and particularly discloses a mica material composition, a mica tube and a preparation method and application thereof. The mica material composition provided by the application comprises the following components in parts by weight: 75-85 parts of mica powder, 35-55 parts of polyethylene, 45-55 parts of silicon powder and 25-35 parts of organic silica gel; the application also provides a mica tube prepared by using the mica material composition, and a preparation method of the mica tube, which comprises the following steps: extruding the mica material composition at an extrusion temperature of 170-190 DEG C, and then air-cooling at 20-30 DEG C for greater than or equal to 20 min to obtain a mica tube preform; and through drying, the mica tube is obtained. The mica tube is prepared by extruding the mica material composition, the mica tube is seamless, the mica tube has good insulation at room temperature and good high-temperature fire resistance, and can meet the use requirements of an electric shock rod or a waterproof sleeve tube insulating layer.

The invention provides a preparation method of an aluminum-metal-layer-free mica insulating sheet for a lithium ion battery, and relates to the technical field of electric insulating materials and insulating component forming / manufacturing processes, the preparation method comprises the following steps: S1, providing a sheet-shaped mica base material, and preparing an organic silicon resin bonding system for impregnation; according to the preparation method of the mica insulating sheet without the aluminum metal layer for the lithium ion battery, a ceramic barrier system constructed by Si sol, Zr sol and titanium dioxide is adopted, and the ceramic barrier slurry is used for surface layering and comprises silica sol, zirconium oxide sol and titanium dioxide. The scheme that the prior art depends on an aluminum reflecting layer is avoided from the process path, so that the lithium ion battery insulation protection material meets the heat resistance and insulation requirements, meanwhile, aluminum-free treatment is achieved, and the application adaptability between battery cells and between the battery cells and the shell is improved.

An electric wire is disclosed having a metal conductor, a first synthetic heat stable tape layer in direct contact with the metal conductor, wherein the first synthetic heat stable tape layer has a first edge and a second edge, wherein the first edge and the second edge are substantially parallel to one another, wherein the second edge overlaps the first edge by at least 180 degrees on a cross-sectional view, a second synthetic heat stable tape layer, wherein the second synthetic heat stable tape layer is helically wrapped around the first synthetic heat stable layer, a third synthetic heat stable tape layer, wherein the third synthetic heat stable tape layer is helically wrapped around the second synthetic heat stable layer, wherein electric wire contains no silicone, and an extruded layer, wherein the extruded layer is extruded over the second synthetic heat stable tape layer.

The invention relates to the technical field of power cable manufacturing, and particularly discloses a high-strength low-loss polyvinyl chloride power cable. The high-strength and low-loss polyvinyl chloride power cable comprises a conductor layer, a reinforcing layer is arranged outside the conductor layer, an insulating inner layer is arranged outside the reinforcing layer, an insulating middle layer is arranged outside the insulating inner layer, an insulating outer layer is arranged outside the insulating middle layer, and the insulating outer layer is arranged outside the insulating middle layer. The insulating inner layer, the insulating middle layer and the insulating outer layer jointly form an insulating layer, and the reinforcing layer is formed by spirally winding stainless steel wires; the insulating outer layer is composed of polyvinyl chloride and nano silicon dioxide; the insulating middle layer is composed of polyvinyl chloride and mica powder; the insulating inner layer is composed of polyvinyl chloride and a plasticizer. The power cable can be used for occasions with requirements for mechanical strength, flexibility and long-term electrical stability, and has the comprehensive advantages of being high in mechanical strength, excellent in fatigue resistance, low in insulation loss, uniform in electric field distribution, good in long-term operation reliability and the like.

The present application relates to the technical field of power cable, and discloses an ant termite fireproof power cable.The cable comprises a plurality of conductors wrapped with insulation layers to form an insulated core, a filling layer for covering the insulated core to form a round cable core, a conductor shielding layer for covering the filling layer, a mica tape fireproof layer for covering the conductor shielding layer, an ant termite fireproof assembly comprising a protection layer spirally wound outside the fireproof layer and an expansion strip embedded in the protection layer, a buffer layer for covering the ant termite fireproof assembly, a steel tape armoring layer for covering the buffer layer and an outer sheath for covering the steel tape armoring layer.The protection layer is formed by a plurality of fan-shaped retainers connected in an axial spiral manner, the retainers are provided with grooves for placing the expansion strips, and the outer walls of the retainers are provided with guide strips matched with guide grooves to realize stable connection.The expansion strips are expanded to fill the gaps and provide thermal insulation when a fire occurs, and the fireproof layer maintains insulation.The protection layer, the steel tape armoring layer and the outer sheath cooperate to realize ant termite prevention and structural stability, thereby ensuring the safety and reliability of the cable operation.

The invention relates to a nano-composite mineral cable insulating layer and a preparation method thereof, and belongs to the technical field of cable insulating materials. The insulating layer is composed of an inorganic composite filler subjected to surface treatment by a silane coupling agent and a low-melting-point glass powder binding phase, the inorganic composite filler comprises nanoparticles and mica sheets, and the melting temperature of the low-melting-point glass powder is 600-900 DEG C. The preparation method comprises the following steps: carrying out silane coupling agent surface modification on nanoparticles and mica sheets; and mixing with low-melting-point glass powder, filling the periphery of a cable conductor with the mixture, and performing microwave sintering. Through the synergistic effect of the inorganic composite filler and the low-temperature bonding and microwave sintering process of the low-melting-point glass powder, the toughness, compactness and insulating high-temperature-resistant performance of the insulating layer are remarkably improved, meanwhile, energy consumption is reduced, the production period is shortened, and the insulating layer is suitable for special cables in the severe environment.

This invention belongs to the field of flame-retardant materials technology, specifically relating to a flame-retardant, temperature-resistant, and overload-resistant cable material and its preparation process. The cable material is made by bonding modified high-silica glass fiber braided tape and modified mica tape; the modified high-silica glass fiber braided tape is woven from modified high-silica glass fibers; the modified mica tape is made from modified mica paper and alkali-free glass fiber cloth. The preparation process of this cable material is simple, it can effectively block external electromagnetic interference, and it has good insulation, high-temperature resistance, and flame-retardant properties.

The utility model relates to the technical field of radio frequency coaxial cables, in particular to a radio frequency coaxial cable easy to identify, which comprises a cable body, identification protrusions are arranged on the surface of the cable body, and different numbers of identification protrusions correspond to cables of different users. According to the radio frequency coaxial cable easy to identify, different numbers of identification protrusions correspond to cables of different clients, so that an operator can rapidly identify the cables in the wiring and subsequent maintenance processes, and the wiring and maintenance efficiency is improved.

To provide paper suitable for use in a battery or a battery pack as a flame barrier or a thermal insulator.SOLUTION: There is provided paper suitable for use in a battery or a battery pack as a flame barrier or a thermal insulator, the paper including 60 to 95 wt.% of aerogel powder and 5 to 40 wt.% of aramid polymer fibrils and having a thickness of 50 to 4000 μm.SELECTED DRAWING: None

The invention relates to the technical field of protection of a battery pack PACK inner connecting row, and discloses a high-temperature-resistant high-insulation mica shell structure, which comprises a mica shell, a mica adhesive tape and a PI polyimide adhesive tape, the mica shell is formed by stacking a plurality of layers of thin mica paper and then putting the mica paper into a mold with a specific shape for hot pressing, and the mica shell is firstly assembled on an injection molding shell and then is assembled on the PI polyimide adhesive tape. Fixing the battery pack in a specified protection position in the battery pack through a mica adhesive tape and a PI (polyimide) adhesive tape; according to the high-temperature-resistant and high-insulation mica shell structure, material adaptation, structure protection and fixing guarantee serve as the core, the thought of prevention-blocking-redundancy protection is followed, phlogopite is selected as the raw material, and the high-temperature-resistant and high-insulation characteristics of the phlogopite are utilized to adapt to a thermal runaway scene; a plurality of layers of thin phlogopite paper are stacked and hot-pressed to form a thick mica shell; a protective gap is formed in a joint position; a mica adhesive tape is initially fixed and forms a double interlayer with the mica shell; and a PI adhesive tape is wound on the outer side to prevent displacement and prevent protection failure, so that the protection function is ensured to be effective from the source, and a foundation is laid for subsequent protection.

The invention relates to the technical field of mineral isolation type fireproof cables, in particular to a fire early warning type temperature sensing fireproof cable which comprises a conductor, a mica tape insulating layer, an XLPE reinforcing layer, a split-phase aluminum metal sheath, a mineral isolation layer and a low-smoke halogen-free flame-retardant outer sheath. According to the invention, temperature and humidity two-parameter real-time monitoring is realized, fire hazards of different grades can be accurately identified through three-threshold grading early warning, gradient prevention and control are realized, and fire is avoided from the source; a double-wire redundant temperature measurement wire group is adopted to thoroughly solve the problem of monofilament failure, a gradient heat conduction glue layer realizes double effects of rapid conduction and high-temperature protection, and temperature and humidity composite sensing and a radio frequency identification code realize centimeter-level positioning; the overall thickness of the sensing layer is further reduced, the elastic buffer pad and the gradient heat-conducting adhesive layer relieve mechanical stress, electrostatic shielding is integrated, the strength of the isolation layer is enhanced, the fireproof, mechanical and electrical performance of the cable is integrally optimized, and the cable is completely adaptive to the production process of the existing NG-A cable.

The invention relates to the field of insulating materials, in particular to an indoor cable wire fireproof insulating material and a preparation method thereof.The insulating material comprises a basalt fiber woven layer, an interface layer and a mica tape layer which are sequentially arranged; the basalt fiber woven layer comprises three-dimensional basalt fiber skeleton cloth and nano silicon carbide loaded on the surface of the three-dimensional basalt fiber skeleton cloth; the mica tape layer comprises mica paper, high-thermal-conductivity slurry, intumescent flame-retardant slurry and ceramic precursor slurry. The interface layer is formed by compounding phase change microcapsules, thermal expansion monomers and low-melting-point glass powder, and in the high-temperature stage (300-500 DEG C) of the initial stage of a fire disaster, the thermal expansion monomers are rapidly polymerized and foamed to form an expansion thermal insulation layer; and under continuous flame firing (gt; 380 DEG C), the glass powder is softened and is co-melted with a matrix decomposition product, so that the formation of a compact ceramic protective layer is promoted. Namely, the interface layer can exert corresponding effects at different temperatures, so that the fireproof performance is improved.

The invention discloses a preparation method and application of an aramid fiber reinforced high-thermal-conductivity organic silicon mica tape, and belongs to the technical field of thermal conductive insulating materials. The problems that traditional mica paper is poor in mechanical property, a mica tape is low in heat conductivity, and heat cannot be dissipated in time are solved. The silane coupling agent is adopted to carry out surface modification on the aramid fiber, the bonding capacity of the aramid fiber and the mica sheet is improved, meanwhile, high-heat-conduction boron nitride is introduced into the mica paper to construct an internal heat conduction channel, and the mica paper and the glass wool cloth are further compounded through the organic silicon resin to prepare the mica tape. The method is applied to a traction motor main insulation system.

The present application relates to the technical field of mica tape, particularly relates to a fire-resistant mica tape and a processing method thereof, the fire-resistant mica tape comprises a mica layer in the middle, a first adhesive layer is coated on one side of the mica layer, a fiber layer is arranged on the outer side of the first adhesive layer, a second adhesive layer is coated on the other side of the mica layer, and a carbon-free film layer is arranged on the outer side of the second adhesive layer.The processing method comprises the following steps: S1, preparing a fiber cloth, a mica paper, a carbon-free film and a rope net; S2, preparing a glue solvent; S3, coating the glue solvent on one side of the fiber cloth, laying the rope net on the sprayed glue solvent, and spraying the glue solvent again; S4, laying the mica paper on the outer side of the first adhesive layer, spraying the glue solvent and the carbon-free film on the outer side of the mica paper; S4, performing compounding by a compounding machine, and performing first drying; S5, performing pressing, forming a long groove on one side of the carbon-free film layer, and forming a convex rib on the other side; and S5, performing second drying.The stability of the fire resistance of the product is improved.

The application relates to a composite insulating material and a preparation method and application thereof. The composite insulating material comprises a first polyether sulfone resin layer, an aramid fiber paper layer, a first polyurethane adhesive layer, a mica paper layer, a second polyurethane adhesive layer, an alkali-free glass cloth layer and a second polyether sulfone resin layer which are sequentially stacked, and the mica paper layer is formed by calcined mica paper impregnated with polyurethane adhesive. The composite insulating material has superior comprehensive performance, can meet the use requirements of a new type of driving motor, has better use stability compared with a new type of mica aramid fiber mixed paper and has lower production cost.

This invention discloses a puncture-resistant shielded wire, relating to the field of wire technology. It includes a wire body with an auxiliary mechanism. The auxiliary mechanism includes a circular ring block and a circular ring groove. Two symmetrical rectangular grooves are formed on one side of the circular ring block. Two locking holes are formed on the outer wall of the circular ring block. Two locking blocks are arranged inside each locking hole. A first sliding groove is formed on the inner wall of each locking hole. Two sliders are slidably connected inside each first sliding groove. A round rod is fixed inside each rectangular groove. This invention, by setting the auxiliary mechanism, enables the puncture-resistant shielded wire to have a rapid heat dissipation function, thus avoiding situations where heat cannot be quickly dissipated, affecting the insulation performance of the wire, shortening its service life, and increasing the fire hazard. This improves both the effectiveness and efficiency of the puncture-resistant shielded wire.

The invention relates to the technical field of cable materials, in particular to a mica tape special for a fire-resistant cable and a forming process of the mica tape. The invention discloses an epoxy modified mica composite material which is composed of 65-80 parts of synthetic mica powder, 12-22 parts of a composite bonding system, a zinc 2-ethylhexanoate curing agent accounting for 8% of the total mass of the composite bonding system, an alkali-free glass fiber cloth reinforcing base material with the mass per unit area being 22 g / m < 2 > and the thickness being 0.028 mm and 5-6 parts of an epoxy modified resin composition surface adhesive layer. According to the special mica tape for the fire-resistant cable and the forming process of the special mica tape, systematic optimization is carried out aiming at many defects in the prior art, leap-type improvement of the comprehensive performance of the fire-resistant mica tape is achieved, and the special mica tape has remarkable technical advantages and practical value.