16results about How to "High temperature resistance" patented technology

This utility model discloses a high-voltage DC relay with a dual-magnetic steel structure, comprising: a housing, two sets of stationary contacts arranged inside the housing with their tops extending to the outside of the housing, an inner support cover inside the housing, an outer iron core inside the inner support cover, a shaft body at the center of the outer iron core, a moving contact at the upper end of the shaft body, and a bracket at the lower part of the moving contact. This utility model uses a dual-magnetic steel structure made of ferrite and neodymium iron boron materials, which features high temperature resistance and strong magnetism. The temperature generated during relay operation has a relatively small impact on the magnets, avoiding the situation where the product's electrical life is shortened due to excessively high operating temperature. Furthermore, the structural changes of this new product broaden its applications, and the improved temperature resistance of the magnets enhances the stability of the relay during operation.

This invention discloses a surface hardening method for universal joints in screw drills and related universal joints. The method includes: performing heat treatment and finishing on a rough-machined universal joint blank to obtain the universal joint body; after preheating the universal joint body, spot welding a tungsten-cobalt alloy block wrapped with nickel-based brazing filler metal to the wear-resistant contact surface at one end of the universal joint body; spraying nickel-tungsten carbide powder and nickel-coated boron carbide composite powder onto the wear-resistant contact surface to form a hardened layer on the wear-resistant contact surface; after cooling, grinding the sprayed surface to the design dimensions; inspecting the porosity of the ground sprayed surface, filling the porosity with nickel-tungsten carbide powder and nickel-coated boron carbide composite powder, heating and melting to seal the porosity; and after cooling, precision grinding the universal joint to the design dimensions. This invention greatly improves the wear resistance and impact fracture resistance of the universal joint, enabling it to be used in conjunction with other screw drill components resistant to 350℃ high temperatures to form screw drills resistant to 350℃ high temperatures.

The application belongs to the field of paint, and particularly discloses PU white primer, a preparation method and application thereof. The PU white primer comprises A component, B component and C component. The A component comprises hydroxyl acrylic acid resin, castor oil, dispersing agent, defoaming agent, cyclohexanone, silicon dioxide, titanium white powder, talcum powder, calcium carbonate, butyl acetate, leveling agent, organic tin and propylene glycol methyl ether acetate. The B component comprises butyl acetate, HDI trimer and isocyanate prepolymer. The C component comprises dimethylbenzene, butyl acetate, propylene glycol methyl ether acetate and dimethyl carbonate. The PU white primer has the advantages of water resistance, high temperature resistance, adhesion, adhesion, hiding power and strong flexibility, and has superior comprehensive performance, is green and safe, low in cost, and is very suitable for being used as wood and stone surface primer in kitchens, bathrooms and the like.

The utility model provides a kind of submerged entry nozzle electric heating baking device, including hearth shell, the wall of hearth shell includes nanometer microporous heat insulation plate layer, light clay brick layer and high-alumina refractory brick layer in turn from outside to inside, hearth shell is equipped with one or more heat-resistant partition, for the inner cavity of hearth shell is divided into multiple baking chambers, each baking chamber is used to install submerged entry nozzle, each baking chamber is evenly arranged with multiple silicon carbide heating rods around the periphery of submerged entry nozzle, the cold end of each silicon carbide heating rod is passed through hearth shell and is connected with power supply, hearth shell is equipped with insulating sealing sleeve pipe at the wall penetration position of each silicon carbide heating rod. It can meet the high-temperature preheating demand of submerged entry nozzle, and multiple submerged entry nozzles can be simultaneously and evenly electrically heated and radiantly baked, the temperature field distribution of submerged entry nozzle is uniform, local stress concentration problem is not prone to occur, and the heat insulation effect of hearth shell is good, heat loss is small, and energy utilization rate is high.

This invention relates to a method for online crosslinking of hollow bodies using ultraviolet light through blow molding. The molding method includes the following steps: 1) Two preforms are cut into blanks, which are then positioned between two molds and an intermediate mold; an ultraviolet light emitting device is installed on the intermediate mold; 2) The molds are closed, and air is blown into the intermediate mold to preform the preforms; 3) After preforming, ultraviolet light irradiation and fixing of the internal components are performed; 4) The molds are closed, and blown needles on the molds begin blowing air, fusing the two preformed half-shells together along the parting line to form a hollow body, which is then cooled and solidified; 5) The molds are opened, and the product is removed. This method addresses the problems of low strength in plastic fuel tanks, which, in the field of high-pressure fuel tanks, cannot withstand the high fuel vapor pressure generated by temperature differences and prolonged engine inactivity, leading to large deformation of the fuel tank, as well as the high cost of existing plastic high-pressure fuel tank solutions.

The application discloses a guar gum composition for oil field exploitation and a preparation method thereof, and relates to the technical field of guar gum. The method comprises the following steps: alkalizing, cation etherizing and copolymerizing AM-AMPS with natural guar gum to obtain an organic modified guar gum; introducing active groups through a silane coupling agent KH-560; and finally, carrying out in-situ sol-gel reaction with SiO2-TiO2 composite precursors to form an organic-inorganic interpenetrating network structure. The guar gum composition has good structural stability and viscosity retention capacity at high temperatures, and is suitable for fracturing construction of deep high-temperature oil and gas reservoirs.

The application relates to a preparation method of a lithium battery diaphragm and belongs to the technical field of lithium battery preparation. The method is as follows: epoxy resin, a diluent, a curing agent 1 and an oleophilic emulsifier are uniformly mixed to obtain dispersion liquid 1; an electrolyte solution is constantly dropped into the dispersion liquid 1, constant-temperature high-speed stirring is carried out, and a water-in-oil emulsion is obtained; under constant temperature, deionized water, a hydrophilic emulsifier and a curing agent 2 are uniformly mixed to obtain dispersion liquid 2; the water-in-oil emulsion is added into the dispersion liquid 2, high-speed emulsification is carried out, and a water-in-oil-in-water emulsion system is obtained; the water-in-oil-in-water emulsion system is subjected to temperature rising and curing; after curing, centrifugal separation, washing and drying are carried out, and a solid nanometer adhesive is obtained; the solid nanometer adhesive is ground, then is uniformly coated in a mold and is subjected to high-temperature treatment, and the lithium battery diaphragm is obtained. The electrolyte solution is selected as the inner water phase of the water-in-oil emulsion, the internal osmotic pressure of the emulsion can be increased, fusion between the emulsions can be prevented, and the particle size is increased.

The utility model provides a kind of organic silicon light-transmitting leather, organic silicon light-transmitting leather is used for attaching to target object, it includes 3D mesh material layer, base layer, light-transmitting organic silicon layer that are sequentially arranged, and pattern layer is set on light-transmitting organic silicon layer or base layer, pattern layer is set on the side of light-transmitting organic silicon layer or base layer close to target object, and the material of base layer is TPU or PET.In the utility model, transparent organic silicon layer and base layer both have the nature of light transmission, pattern layer can be formed into different patterns, and part of light can be blocked, so that different patterns can be observed by light from the outside.

This invention relates to a composite material thin-walled tube and its manufacturing process. The composite material thin-walled tube is made of a high-performance fiber-reinforced resin composite material, which includes a fiber reinforcement and a resin matrix. The fiber reinforcement is an etched high-performance fiber. The composite material thin-walled tube has a certain aspect ratio and a chamfer at the end. A thin-walled layer exists within the voids of the composite material thin-walled tube. The cross-section formed by the thin-walled layer and the outer wall layer of the composite material thin-walled tube is an irregular cross-section. Structurally, this irregular cross-section is divided into a load-bearing zone and a restraining zone. The load-bearing zone and the restraining zone respectively constitute the load-bearing layer and the restraining layer of the thin-walled tube along its length. This invention features lightweight and high energy absorption, with more efficient and stable energy absorption, solving the technical problem that composite material tubes are difficult to simultaneously achieve small deformation and high energy absorption.

The application discloses a kind of carbon dioxide corrosion inhibitor based on mannich base and its preparation method and application, belong to petroleum chemical industry metal material protection technical field.Main agent mannich base is with 3-amino crotonitrile, 3-hydrazine quinoline, phenylacetone, cinnamaldehyde as main, it is prepared by condensation, mannich two-step reaction, its structure is as shown in formula A.The inhibitor includes by mass percentage:mannich base A 30~40%, alkylamine 8~16%, potassium iodide 0.3~0.6%, surfactant 10~20%, organic solvent 30~60%.Mannich base A synthesis is simple, post-treatment is convenient, molecule contains quinoline, pyrazole, carbonyl, double bond, phenyl functional group simultaneously, can be well adsorbed on carbon steel surface and form dense protective film to prevent the invasion of corrosive medium.Add alkylamine, potassium iodide, surfactant, organic solvent, water solubility increases after compounding, corrosion inhibition effect is enhanced.The corrosion inhibitor has the characteristics such as small amount, high efficiency, wide application range, and has wide application prospect in oil and gas production.

The application relates to a fine wire winding and welding machine, and relates to the technical field of wire welding equipment. The fine wire winding and welding machine comprises a wire stripping mechanism, a welding mechanism and a feeding mechanism. The welding mechanism comprises a wire winding assembly. The wire winding clamp in the wire winding assembly is composed of a pneumatic element, a clamp piece, a return spring and a fixing seat. The clamp piece comprises a first clamp block and a second clamp block which are provided with positioning shaft shoulders. The welding mechanism comprises a wire welding arm and a wire stripping arm. A spot welding gun and a striking rod are arranged on the wire welding arm. The end of the wire stripping arm is provided with a ceramic seat with a through hole. The ceramic ring in the through hole is in the form of an open ring, so that the fine wire can pass through the ceramic ring conveniently. The wire winding driving assembly adopts an electric sliding table. The wire stripping arm and the wire welding arm are slidably connected through sliding rails. The wire stripping mechanism comprises a wire stripper which is provided with a wire running seat, a wire extruding plate, a wire extruding wheel, a wire stripping knife and a plurality of auxiliary components, so that the fine wire can be processed accurately and welded efficiently. The application can improve the firmness of fine wire welding and ensure the quality of wire welding.

The utility model provides a split smoke mask with protection system and can be reused, belongs to the fire control field, the mask is connected with the protection system through the water cooling pipe, the protection system includes filter jar and backflush air bag, filter jar is sequentially provided with dust collection space, ceramic membrane, filter smoke layer and adsorbent from bottom to top, backflush air bag is arranged in the outer periphery of filter jar, and filter jar and backflush air bag below are connected with air inlet pipe, backflush air bag top is also provided with the communicating part, the communicating part leads to filter jar top, filter jar below is provided with exhaust pipe, and backflush air bag communicating part is communicated with filter jar top, and the valve is arranged on water cooling pipe, air inlet pipe and exhaust pipe, air inlet pipe is connected with air pump, and air pump is provided with automatic cleaning control circuit and automatic cleaning button, can play high temperature resistance, reusable, timely cleaning can prevent poison, dustproof, protects personnel safety evacuation fire scene, saves life.

The application relates to the technical field of coatings, and discloses a modified aerogel, a preparation method thereof and application of the modified aerogel in radiation refrigeration coatings. The method comprises the following steps: in the presence of water, a solubilizer and an acid catalyst, performing a hydrolysis reaction on a silicon source to obtain a silica sol; in the presence of an alkali catalyst, performing a gelation reaction on the silica sol and rare earth oxide with a linear average particle size of 10-100 nm to obtain a modified wet gel; performing normal-pressure drying on the modified wet gel to obtain the modified aerogel; and controlling the addition amount of the rare earth oxide and the conditions of the normal-pressure drying, so that the content of the rare earth oxide in the modified aerogel is 0.5-1 wt%. The coating prepared from a radiation refrigeration composition containing the modified aerogel prepared by the application has the characteristics of high solar reflectivity and high atmospheric window emissivity.

This utility model relates to the field of connector technology, and more particularly to a PCB board direct-connection high-current through-wall terminal, including an insulating base, a conductive sheet, a wiring assembly, and a sealing ring. An external wiring portion protrudes from the insulating base, and an internal wiring portion is recessed on the insulating base. The internal wiring portion is smaller than the external wiring portion. A sealing ring surrounds the internal wiring portion of the insulating base, and mounting holes are provided on the outer side of the insulating base. An external partition divides the external wiring portion into several external wiring slots, and the internal wiring portion similarly has an internal partition dividing the internal wiring portion into the same number of internal wiring slots as the external wiring slots. The conductive sheet is integrally injection molded with the insulating base. One end of the conductive sheet is pre-embedded in the external wiring slot, and the other end is pre-embedded in the internal wiring slot, with the middle encased within the insulating base. Wiring assemblies are provided at both ends of the conductive sheet. This utility model provides a through-wall terminal integrating high-current transmission, multi-functional modularity, rapid installation, and high reliability.

This invention relates to the field of special high-temperature resistant cable technology, and in particular to a multi-level collaborative protection high-temperature cable with self-sensing early warning and active heat dissipation functions. It includes an intelligent sensing soft conductor core, which is sequentially covered with an active oxygen barrier buffer layer, a phase change energy storage-thermal conductive composite insulation layer, and a microchannel active heat dissipation protective layer. This invention achieves precise positioning and coaxial distribution of the sensing fiber by adding an optical fiber positioning and limiting component to the intelligent sensing soft conductor core, avoiding data distortion caused by fiber misalignment and compression. Combined with a femtosecond laser micro-damage thermal regeneration grating thermal sensing fiber and a zirconia fiber oxygen sensor, it can monitor the conductor temperature field and oxygen permeation status in real time and accurately, transforming the hidden oxidation aging process into quantifiable data trends, achieving early warning of failure, and preventing sudden failures.

This invention belongs to the field of aerogel technology, specifically to a flame-retardant and heat-insulating aerogel blanket for power batteries and its encapsulation process. The process of this invention includes the following steps: (1) preparing adhesive: mixing phosphate ester flame retardant, inorganic flame retardant, nitrile rubber, epoxy resin and dicyandiamide curing agent evenly and setting aside; (2) applying the adhesive to a PET film using a coating machine, and drying to obtain PET coated with adhesive; (3) compressing and encapsulating the intermediate body through an encapsulation mold at a set temperature, and curing to obtain a flame-retardant and heat-insulating aerogel blanket for power batteries. This invention compresses and encapsulates the aerogel heat-insulating blanket, thereby reducing the volume occupied by the aerogel heat-insulating blanket in the battery pack. Moreover, it uses V-0 flame-retardant PET, applies a special adhesive film, compresses and adheres it on both sides, and encapsulates it on all four sides, thereby achieving both volume reduction and lightweight and neatness, while solving the problem of powder shedding from the aerogel blanket filler.