32results about How to "Arc resistant" patented technology

The invention discloses an antistatic antibacterial PC (polycarbonate) / ABS (acrylonitrile-butadiene-styrene copolymer) composite material comprising the following components by weight: 63-93 parts of polycarbonate, 57-65 parts of ABS, 33-47 parts of a flame retardant agent, 29-44 parts of a nano antibacterial agent, 41-47 parts of an antiaging agent, 24-32 parts of an antistatic agent, 24-32 parts of a compatibility agent, 22-26 parts of a lubricant, 19-23 parts of a toughening agent, 15-20 parts of a synergistic agent, 10-16 parts of an insulation agent, 10-16 parts of a yellowing resistant agent and 17-24 parts of a wear-resisting agent. The antistatic antibacterial PC / ABS composite material has excellent antistatic performance, avoids the deleterious effects of electrostatic, and also has antibacterial properties, more than 99% bacteriostasis rate can be maintained for a long term, the composite material has good anti-aging properties, is flame retardant, simultaneously reduces the combustion smoke density, has excellent characteristics of wear resistance, yellowing resistance, high voltage resistance and electric arc resistance, and is suitable for different use requirements.

The invention discloses a heat insulation-type cable, which comprises a cable core. An inner sheath and an outer sheath are extruded outside the cable core; the cable core is composed of a triangular support, three insulated wire cores mutually extruded inside the triangular support and ground wires located at three vertex angles of the triangular support; a ceramic fiber is arranged between the triangular support and the inner sheath; and an elastic buffer layer with a thickness of 2 to 5 mm, a metal armored layer with a thickness of 2 to 4 mm and a rock wool heat insulation layer with a thickness of 3 to 6 mm are sequentially arranged between the inner sheath and the outer sheath. Through arranging multiple heat insulation structures, the cable of the invention has the advantages of good heat insulation performance, high temperature resistance, good heat stability, low heat conductivity and the like.

This invention relates to a silver-based rare earth alloy touch material used in low voltage switch appliance and its process method. Its chemical components are the following: rare earth metal oxide x=1~7 %; Me oxide y=1~3 %; SnO#-[2] z=(12-x-y)%; the rest is metal silver, wherein the rare earth metals are La,Ce,Pr or Nd and Me as Bi,In,Sb or T1. Its process method is as following: to use che mical co-precipitation to make powder and to shape and sinter the deposited powder.

The invention discloses a crosslinked polyethylene insulated multi-core flame retardant cable, which comprises a cable core. The gap of the cable core is provided with an inorganic mineral oxygen barrier layer; the cable core is wrapped with a first polyester tape; a semi-conductive shielding layer is extruded outside the polyester tape; a steel strip armored layer is arranged outside the inner semi-conductive shielding layer; a rock wool heat insulation layer is extruded outside the steel strip armored layer; and the outermost layer of the cable is provided with a silica fireproof sleeve; the cable core is formed by stranding a ground wire and two insulated wire cores arranged symmetrically with the ground wire as an axial center in a horizontal mode; and the cable core is internally provided with a group of through holes symmetrically with the ground wire as the axial center. The crosslinked polyethylene insulated multi-core flame retardant cable has the advantages of good flame retardancy, high temperature resistance, good cooling performance, fire resistance, good insulated performance and the like.

The invention discloses a bathtub-floor integrated super multi-coating (SMC) floor, which comprises a floor main body and a bathtub which are integrally arranged, wherein a bathtub drain hole is arranged at the bottom surface of the inner side of the bathtub, the edge of the bathtub extends downwards to form the skirt of the bathtub, a repair and maintain hole and the drain hole of a wash basin are arranged on the side edge of the skirt of the bathtub, the bottom of the bathtub is connected with the floor main body which is integrally arranged with the bathtub, and a drain ditch is arranged at the connection part of the bathtub and the floor main body, a floor drain hole and a defection hole are arranged on the floor main body, a shoulder step is arranged at the edge of the floor main body, a watertight shutter is arranged on the lateral straight edge of the shoulder step, and the bottoms of the floor main body and the bathtub are pneumatically reinforced, and are provided with adjustment bolts. The bathtub-floor integrated super multi-coating floor arranges the floor, the bathtub and the skirt of the bathtub into a whole body, so the bathtub and the skirt of the bathtub are partsof the floor, no splicing seam is generated, so the water leakage problem caused by the splicing seam of the conventional integral bathroom is solved, and the floor has an attractive and elegant overall appearance, and is easy to clean; and according to the floor, the repair and maintain hole and the drain hole of the wash basin are arranged on the skirt of the bathtub, so the subsequent fault maintenance is facilitated.

The invention provides an airplane blocking bed blocking unit top cover and a preparation method thereof, and aims to provide the airplane blocking bed blocking unit top cover which is stable in mechanical strength, low in dispersity, high in weather resistance, and high in flame retardant property. Through the technical scheme, dicyclopentadiene type unsaturated polyester resin is adopted as matrix resin, a polybutadiene-styrene copolymer is adopted as a low shrinkage agent, benzopinacole silicon alkyl ether is respectively or commonly used with benzoyl peroxide tert-butyl ester, peroxide-2-ethylhexoic acid tert-butyl ester to form an initiator, an unsaturated polyester glass fiber modeling piece SMC prepared from an ultraviolet absorbent is added, then the SMC resin paste is used for steeping and rolling an upper resin paste film layer, a middle chopped glass fiber layer and a lower resin paste film layer through a coating machine, and the SMC material containing 8 to 12 parts by weight of chopped glass fiber is prepared through curing; and then the product is molded through compression and cooled to room temperature in a laminated top cover mold with required thickness.

The invention relates to a primary fuse-operable outdoor voltage transformer assembly, which is used for fault protection of outdoor high-voltage lines, including a voltage transformer (1), a fuse and an operating rod (3), the fuse top and The voltage transformer (1) is connected through the rotating bayonet, the bottom of the fuse is connected flexibly with the top of the operating rod (3), and the fuse is fed into the voltage transformer (1) through the operating rod (3), or the fuse is fed into the voltage transformer (1) through the operating rod (3) Pull the fuse out of the voltage transformer (1). Compared with the prior art, the voltage transformer of the present invention is an epoxy resin cast insulating fully enclosed structure, which has the characteristics of arc resistance, ultraviolet resistance, aging resistance, large creepage distance, small partial discharge, and strong overvoltage resistance. Fuse replacement does not require power-off operation, flexible operation, and high safety, so as to reduce the power-off time of outdoor circuits, reduce power-off losses, and improve user satisfaction.

The invention belongs to the technical field of adhesives, and in particular relates to a room-temperature fast-curing low-stress transparent epoxy resin adhesive, which is composed of epoxy resin A component and curing agent B component in a volume ratio of 1:1; The epoxy resin A component includes: hydrogenated bisphenol A epoxy resin, bisphenol A glycidyl ether epoxy resin, functional acrylate monomer, acrylate diluent, tackifier and silane coupling agent; The curing agent B component includes: polythiol, tertiary amine accelerator, co-accelerator, stabilizer, curing accelerator 1 and curing accelerator 2. The adhesive prepared by the present invention maintains fast curing for 5 minutes, high transparency and good bonding strength, low exothermic temperature and small stress during curing, good applicability in electronic device assembly, and electrical insulation , Excellent voltage breakdown resistance, impact resistance and aging resistance, greatly expanding the application of mercaptan-epoxy resin adhesives in the manufacture of electronic devices.

The present invention relates to an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink, and preparation methods of the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment and the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink. The photoluminescence anti-counterfeiting pigment contains 60-70 parts by weight of a cross-linked melamine-formaldehyde resin, and 1.0-2.0 parts by weight of a yellow dye. The method for preparing the photoluminescence anti-counterfeiting pigment and the photoluminescence anti-counterfeiting ink comprises: adding a formaldehyde solution and triethanolamine to a reactor, and adjusting the pH value to 8-9; adding melamine to the obtained mixture, adjusting the temperature to 75-85 DEG C, and adding an alcohol solvent to obtain a colorless and transparent melamine-formaldehyde resin solution; adding a coumarin-base dye and acetic anhydride, adjusting the pH value of the reaction system to 4.0-6.0, and carrying out cross-linking curing to obtain a cross-linked and cured colored resin dye mixture; drying, crushing, and screening to obtain the organic luminescence pigment; and adding the pigment to an aqueous binder resin to obtain the luminescence anti-counterfeiting ink. The anti-counterfeiting ink has characteristics of no polluting, fire retardation, no toxicity, no odor and the like, wherein destruction of the printing industry on the ecological environment can be reduced.

The invention discloses a series gap arrester comprising an arrester body, an insulator, an upper discharge rod and a lower discharge rod. An air gap is formed between the upper discharge rod and the lower discharge rod, and the air gap between the upper discharge rod and the lower discharge rod is fixed on the insulator. The upper discharge rod and the lower discharge rod are respectively formed by pressing, by weight, 20% of carbon fiber, 40% of high-carbon graphite, 5% of copper powder, 5% of white steel powder and 30% of conductive resin. The carbon fiber is rod-shaped, circular, octagonal, elliptic or oblong. No umbrella leaf flash-down phenomenon is caused. The series gap arrester has the characteristics of high strength (five times that of steel parts), strong heat resistance (resistant to high temperature above 2000 DEG C), small thermal expansion coefficient, small specific gravity (one fifth that of steep parts), light weight, arc resistance, corrosion resistance and strong aging and UV resistance. The carbon fiber can be permanently used.

The invention relates to a method for preparing rubber. The technical problem to be solved is that the method is required to have the characteristic of low cost. The technical scheme is that a method for preparing high-strength aging-resistant vulcanized rubber comprises the following steps of: injecting raw materials which are stirred uniformly into a mould and vulcanizing to form the high-strength aging-resistant vulcanized rubber, wherein the vulcanization temperature is 120 to 130 DEG C; the vulcanization pressure is 0.3 to 0.5Mpa; and the vulcanization time is 40 to 60 minutes. The rubber consists of the following components in part by weight: 90 to 110 parts of zinc oxide, 30 to 50 parts of anti-aging agent SP-C, 12 to 14 parts of accelerator MBT, 7 to 9 parts of accelerator DPG, 19 to 21 parts of accelerator DM, 19 to 21 parts of rubber softener RX-80, 13 to 15 parts of stearic acid, 22 to 24 parts of sulfur, 3,500 to 3,700 parts of light calcium carbonate, 1,400 to 1,600 parts of natural rubber, 280 to 320 parts of styrene butadiene rubber, 190 to 210 parts of butadiene rubber, and 580 to 620 parts of machine oil No. 46.

The invention relates to an insulating spider resistant to electrical carbon mark in power cable thermal shrinkage terminal parts and components. The insulating spider is characterized by consisting of the following raw materials: low-density polyethylene or a POE (polyolefin elastomer), polyethylene-vinyl acetate or polyethylene-ethyl acrylate, an antioxidant 1010, a flame retardant, high-molecular wax and zinc stearate, wherein the flame retardant is melamine cyanurate and / or melamine isocyanuric acid salt, and also containing any one of aluminum hydroxide micro powder, magnesium hydroxide micro powder, iron oxide powder, light calcium carbonate, kaoline and talc powder, as well as color masterbatch or dye. The insulating spider has the advantages of good miscibility, easy molding, good appearance quality, high arc resistance and creepage resistance, good insulating effect, long service life and the like.

The invention relates to an electrode heating device manufactured from an epoxy plate. An epoxy plate heating box body and an epoxy plate cover plate are manufactured from an electrode heating box body and a cover plate through the epoxy plate; a plurality of mounting nuts are separately arranged in mounting holes of the epoxy cover plate by means of high temperature resistant glue; vacuum valves,pressure gages, pressure release valves and water injection valves are separately screwed into the mounting nuts; multiple groups of spiral heat exchange coils penetrate through the epoxy cover plate, and are adhered to a contact part of the epoxy cover plate by means of the high temperature resistant glue; two ends of the heat exchange coils are separately welded with a water distributor outletand a water collector inlet; combined electrodes are screwed into electrode mounting nuts in the epoxy cover plate through ceramic nuts; and the epoxy cover plate is hermetically connected with the epoxy cover plate heating box body by means of a bolt. The electrode heating device can achieve the purpose that electric energy is completely converted into heat energy, so that efficient utilization of energy is realized, a traditional fire coal and gas heating device in cities and towns and rural areas can be replaced, and the electrode heating device provides steam and heating devices for industrial units and residents, so that the purpose of energy conservation and emission reduction are achieved.

The invention relates to a sol-gel preparation method for a silver rare earth oxide contact material for a low-voltage switching device. The material chemically comprises a rare earth oxide, an oxide of Me, SnO2 and metallic silver. Mass percentage of each oxide accounting for total mass of the oxide is 1-5% of rare earth oxide, 1-5% of oxide of Me, and the balance SnO2. The mass percentage of a sum of mass of the three kinds of oxide to the mass of metallic silver is oxide: silver=85-95:15-5. The silver rare earth oxide contact material for the low-voltage switching device does not contain Cd, is not toxic and environment-friendly, prolongs service life of a contact, and has high hardness, density and conductivity, and therefore contact performance and reliability of electrical devices are improved.