35results about How to "Guaranteed high temperature performance" patented technology

The invention provides a carbon fiber reinforced silicon carbide ceramic and a preparation method thereof, and belongs to the technical field of silicon carbide ceramics. The preparation method comprises the following steps: preparing functional carbon fibers, preparing modified silicon carbide microspheres, preparing a mixture, forming and calcining. The preparation method of the modified silicon carbide microspheres comprises the following steps: putting silicon carbide into an ethanol solution, adding sodium dodecyl amino propionate, carrying out ball milling treatment, and after ball milling is finished, filtering out and drying to obtain ball-milled silicon carbide; placing ball-milled silicon carbide in dimethyl sulfoxide, uniformly stirring, adding modified sodium alginate and hydroxyethyl cellulose, heating to 70-74 DEG C, adding tetrabutylammonium bromide, carrying out heat preservation reaction for 10.0-11.5 hours, and after the reaction is finished, filtering, washing and drying to obtain modified silicon carbide microspheres; the prepared ceramic product is high in strength performance and toughness, low in thermal expansion coefficient and excellent in high-temperature oxidation resistance.

The invention provides a preparation method of a biological functional agent containing bioactive components, which comprises the following steps: dispersing the bioactive components in water; adding the zeolite-loaded titanium dioxide composite material, absolute ethyl alcohol, isopropyl triisostearoyl titanate and polyvinylpyrrolidone into the mixed solution, stirring at the temperature of 65-75 DEG C to obtain a mixed solution containing bioactive components, stirring for 80-100 minutes, and centrifugally drying to obtain the composite material. According to the preparation method of the biological functional agent containing the bioactive components, the loading capacity of the bioactive components on the carrier is improved, the stability of the bioactive components is improved, and the slow release effect is enhanced, so that the preparation efficiency and performance of the biological functional agent are improved; wide prospects are provided for application in the fields of medicines, cosmetics, environmental protection and the like.

The invention relates to the technical field of fire escape devices, in particular to a fire escape device and a using method and manufacturing method.The fire escape device comprises a mouth and nose protection component set and a head and trunk protection component set, the mouth and nose protection component set is used for protecting the mouth and the nose, and the head and trunk protection component set is used for protecting the eyes and other faces and limbs; the mouth and nose protection component set comprises a mouth and nose protection cover assembly and a disposable water bag. The device can protect faces and limbs such as the mouth, the nose and the eyes, a whole set of protection equipment can be provided when a fire breaks out, certain escape time is won, and safe home entry is really achieved.

The invention provides a secondary reinforcing device and method for a reinforced concrete beam without dismantling a reinforcing steel plate, the device comprises an anchoring part, a connecting steel bar and a reinforced concrete layer, the steel plate is attached to the surface of the concrete beam and the reinforced steel plate, and the steel plate and the concrete beam are connected and anchored through bolts; the anchoring parts are connected with the concrete beam in an anchoring mode, meanwhile, the anchoring parts are arranged below the steel plate in a striding mode, the anchoring parts are connected into a whole through the connecting steel bars, and the area where the anchoring parts, the connecting steel bars and the steel plate are located is filled with the reinforced concrete pattern layer. On the basis that an existing reinforcing steel plate does not need to be dismantled, the flexural capacity and rigidity of the concrete beam are improved, construction steps are reduced, the construction efficiency is improved, meanwhile, the adopted geopolymer concrete is low in carbon emission and high in fireproof performance, and it can be guaranteed that the construction process is environmentally friendly and resistant to high temperature in the construction process.

The invention discloses a self-lubricating PEEK-based composite material and a preparation method thereof, and belongs to the technical field of PEEK composite materials. The self-lubricating PEEK-based composite material is prepared from the following raw materials in parts by mass: 100 parts of polyether-ether-ketone resin, 10 to 15 parts of polyarylene sulfide ketone, 5 to 10 parts of polyarylene sulfide amide, 15 to 25 parts of epoxy group modified MoS2atCO-SiO2 nano material, 4 to 12 parts of modified carbon fiber and 1 to 2 parts of antioxidant. Wherein the modified carbon fiber is obtained by carrying out acylation reaction on carboxylated carbon fiber and then carrying out grafting reaction on the carboxylated carbon fiber and 2-aminodiphenyl sulfide. According to the invention, polyether-ether-ketone, polyarylene sulfide ketone and polyarylene sulfide amide are blended to form a polymer matrix of the PEEK-based composite material, and the epoxy group modified MoS2atCO-SiO2 nano material and the modified carbon fiber are used as lubricating components, so that the composite material has an excellent self-lubricating effect under the combined action.

The invention discloses a soluble ceramic core for in-situ growth of mullite whiskers by using low-grade ball clay. The soluble ceramic core is prepared from the following raw materials: low-grade ball clay, sodium chloride and water. The method comprises the following steps: drying and sieving low-grade ball clay, then mixing with sodium chloride, adding water, carrying out spray granulation, putting into a mold, carrying out compression molding, transferring into a muffle furnace, heating to 300 DEG C at a rate of 5 DEG C / min, carrying out heat preservation for 0.5 h, heating from 300 DEG C to 725-775 DEG C at a rate of 3 DEG C / min, sintering for 1.0 h, then cooling to 100 DEG C, and taking out to obtain the in-situ growth mullite whisker soluble ceramic core. The core is manufactured through the pressing sintering technology, the technology is simple, mullite whiskers grow in situ in the ceramic core in the sintering process, the soluble ceramic core is reinforced and toughened, sodium chloride serves as a binder, pollution is avoided, and the comprehensive performance is excellent. The bending strength is 7-15 MPa, the tensile strength is 2-6 MPa, and the material can be collapsed at the water temperature of 90 DEG C, so that a new technology is provided for ceramic mold casting development.

The present invention provides a PFA composite laminate and a preparation method thereof, which belongs to the technical field of perfluororesins. The method includes polymerizing carbon nanotubes with tetrafluoroethylene monomers and perfluoroalkyl vinyl ether monomers to obtain a PFA emulsion containing CNTs, drying and devolatilizing to obtain a PFA powder containing CNTs; applying the PFA powder to the surface of a spun-yarn carbon fiber and drying it to form a prepreg; melt-extruding and granulating the PFA powder to obtain a PFA cast film; superimposing the PFA cast film with the spun-yarn carbon fiber prepreg in different film-forming directions, vacuum exhausting, and compression molding to obtain a laminate; superimposing the laminates in sequence, vacuum exhausting, and compression molding to obtain a PFA composite laminate. Through the processing scheme of the present application, the tensile strength of the PFA composite laminate in the x-y direction and the z-axis direction is improved, and it can be applied to semiconductor processes involving high temperature and strong oxidizing solvent environments.

The utility model discloses a high-temperature-resistant airborne optical cable, which belongs to the technical field of special optical cables and realizes buffer protection of optical fibers in the airborne optical cable by arranging an integral buffer layer structure which is hard outside and soft inside and is formed by a soft first buffer layer and a hard second buffer layer in the airborne optical cable. Attenuation loss of the optical fiber caused by external stress is reduced; meanwhile, the first buffer layer is formed in a longitudinal wrapping mode, so that the degree of freedom of the optical fibers in the optical cable and the convenience of subsequent application are improved. The high-temperature-resistant airborne optical cable provided by the utility model is simple in structure and convenient to prepare, can effectively meet the application requirements of the optical cable in an airborne environment, fully guarantees the high-temperature-resistant performance of the optical cable, improves the external acting force influence resistance of the optical fibers in the optical cable, effectively improves the stability and convenience of the airborne optical cable in the actual application process, and is suitable for popularization and application. Attenuation loss of the optical cable caused by external stress is reduced, and reliability of optical cable signal transmission is guaranteed.

The invention discloses a high-temperature-resistant flexible plugging material and a preparation method thereof, and relates to the technical field of plugging materials, the high-temperature-resistant flexible plugging material comprises the following raw materials by weight: 100 parts of a polysiloxane matrix, 5-150 parts of a thermal insulation filler, 10-150 parts of a ceramic forming filler, 0-150 parts of a flame retardant filler, 0-200 parts of a filler, and 1-20 parts of an interfacial compatibilizer; the modified polysiloxane matrix containing the anion group is used as an interface compatilizer of the plugging material and materials such as concrete, the surface binding force of the plugging material and the materials such as the concrete can be improved, construction is easy, and the plugging material does not fall off for a long time after construction.

The invention discloses a vibrating diaphragm, a sound production device and electronic equipment, and relates to the acoustics field, the vibrating diaphragm comprises at least one thermoplastic polyamide elastomer layer, the thermoplastic polyamide elastomer layer comprises a thermoplastic polyamide elastomer, the thermoplastic polyamide elastomer comprises a hard segment and a soft segment, the hard segment contains an aromatic ring and an amido bond, the soft segment comprises at least one of polyester, polyether, polyether ester, aliphatic polycarbonate or polysiloxane, and the size change rate of the thermoplastic polyamide elastomer layer after heat treatment at 120 DEG C for 1 h is less than or equal to 2%. The vibrating diaphragm provided by the invention can give consideration to rebound resilience and strength required by vibration, and is resistant to high temperature and easy to process.

The application provides a high-nitrogen nickel-saving austenitic stainless steel component preparation method. The method is based on the nitrogen-containing austenite-ferrite type stainless steel S21953, S22253, S22053, S23043, S22553, S25554 and S27603 powder recorded in GB / T 20878-2007, and high-nitrogen nickel-saving austenitic stainless steel components are prepared through in-situ MnN laser additive manufacturing, so as to solve the problems of complex traditional preparation process, high cost, long cycle and the like of the existing high-nitrogen nickel-saving austenitic stainless steel components, the problem that laser additive manufacturing powder raw materials are difficult to obtain, and the problem that special high-nitrogen nickel-saving austenitic stainless steel component development is not mature, and belongs to the field of additive manufacturing.

The present application relates to a kind of cylindrical electrode paste and its preparation method.A kind of cylindrical electrode paste, by mass parts, including 15-20 parts of anthracite main material, 25-40 parts of residual anode, 3-10 parts of graphite fragment, 25-35 parts of coke, 15-30 parts of organic binder, 6-18 parts of bio-based binder. Among them, organic binder includes medium temperature pitch, anthracene oil, beta resin. Among them, bio-based binder includes carbonized hydrophobic composite modified wood bamboo powder, sodium carboxymethyl cellulose. The carbonized hydrophobic composite modified wood bamboo powder of the present application and sodium carboxymethyl cellulose are compounded to form a bio-based binder, which cooperates with the organic binder to ensure the bonding strength, high temperature resistance and electrical conductivity of the cylindrical electrode paste, while realizing the green and low-carbon utilization of biomass, solving the problems of high temperature failure, moisture absorption and easy caking, and many pores of traditional bio-based binder, reducing the resistivity and production cost, and improving the structural density and use stability.

The invention discloses a preparation device and method of a foldable curved-surface polyimide fiber film. Pretreated crease positioning columns are installed on crease positioning holes in a mold base, and fiber fixing columns are installed on other fiber fixing holes in the mold base; the two ends of the main fiber penetrate through positioning holes of the crease positioning columns respectively and are fixed; placing the polyimide fiber in a polyamide acid solution, winding the secondary fiber on the fiber fixing column and the main fiber to prepare a polyimide fiber grid, carrying out heat setting treatment, spraying the polyimide solution on the polyimide fiber grid, and carrying out thermal imidization; the polyimide composite film subjected to thermal imidization is demolded and dried, and the fiber-reinforced foldable curved surface polyimide fiber film is obtained. The film provided by the invention has excellent high strength, high toughness, high heat resistance, corrosion resistance and the like, has good foldability and machinability, and has wide application prospects in the fields of aerospace, electronic information and the like.

The invention discloses an aerogel modified inorganic zinc-rich coating as well as a preparation method and application thereof, the aerogel modified inorganic zinc-rich coating comprises a component A and a component B, and the mass ratio of the component A to the component B is 1: (1-4); wherein the component A is an aerogel modified liquid silicate solution and consists of the following components in parts by mass: 20-40 parts of a silicate solution, 1-5 parts of aerogel and 1-10 parts of water; and the component B is a powder material and comprises the following components in parts by mass: 5-10 parts of body filler, 40-60 parts of zinc powder and 3-8 parts of antirust filler. The aerogel modified inorganic zinc-rich coating is obtained after the aerogel modified inorganic zinc-rich coating is coated on the surface of a treated steel part, dried and cured for 24 hours at normal temperature. The aerogel modified inorganic zinc-rich coating solves the problems that a traditional zinc-rich coating is high in zinc content, prone to precipitation, short in pot life, capable of discharging VOCs and the like, and the prepared aerogel modified inorganic zinc-rich coating is safe, free of pollution and long-acting in corrosion resistance and has high application prospects and market value.

The invention discloses a corrosion-resistant and high-temperature-resistant composite material based on graphene / carbon fibers and a preparation process, gamma radiation treatment and aqueous alkali treatment are used for promoting combination of graphene and zirconium oxide with carbon fibers, so that chemical stability and thermal stress stability of the graphene and the zirconium oxide on the carbon fibers are improved; the corrosion resistance and high temperature resistance of graphene and zirconium oxide can be brought to the carbon fiber, so that the carbon fiber has corrosion resistance and high temperature resistance, and the defects of insufficient corrosion resistance and high temperature resistance of a carbon fiber material in the prior art are overcome; gamma radiation treatment is carried out in an alkali solution, the interface bonding force between graphene and carbon fibers and a reinforcing compound or a matrix material can be enhanced, and compared with the prior art, the interface bonding force between graphene and carbon fibers and the matrix material can be enhanced; and a more stable protection layer is formed while the corrosion resistance of the graphene and the carbon fibers is improved, so that the material has excellent corrosion resistance.

This utility model relates to the field of tape cutting technology and discloses a tape cutting guide device for a plastic box tape wrapping and sealing machine. It includes a base, an auxiliary bonding mechanism fixedly connected to the upper right side of the base, an auxiliary bonding mechanism fixedly connected to the upper front side of the auxiliary bonding mechanism, and a cutting component arranged on the upper rear side of the auxiliary bonding mechanism for cutting the tape. A mounting column is fixedly connected to the upper left side of the base, a sliding column is slidably connected inside the mounting column, a rack plate is fixedly connected to the right side of the sliding column, and a support plate is fixedly connected to the right rear side of the mounting column. In this utility model, through the cooperation of structures such as a second motor, a rotating disk, a first motor, gears, a rack plate, a sliding column, a support plate, a mounting ring, a rotating disk, a cylinder, and a cutting blade, the cutting guide device can cut the tape after it is fully wrapped around the plastic box, improving the wrapping quality and efficiency of the plastic box tape.

The utility model discloses hot stamping reverse gloss oil alumite, which relates to the field of alumite, solves the problem that each coating in the existing alumite is poorer in antistatic property and water resistance, and adopts the following scheme that the hot stamping reverse gloss oil alumite comprises a base film layer, a stripping layer, a color layer, a color layer, an electroplated layer and a glue layer, the base film layer is coated with a stripping layer, and the stripping layer comprises a water-based release coating and a paint coating; the water-based release coating is tightly attached to the outer wall surface of the base film layer, and the base film layer is coated with the water-based release coating through a coating machine; the main material of the paint coating is waterproof paint, and the paint coating is coated on the water-based release paint in an electrostatic spraying manner; according to the hot stamping reverse gloss oil alumite, the high temperature resistance can be guaranteed through the arrangement of the water-based release coating in the stripping layer, the alumite has the waterproof performance due to the arrangement of the paint coating, and the electrostatic capacity of the alumite can be guaranteed through the electrostatic spraying mode.

The utility model belongs to the technical field of cases and cabinets, and particularly relates to a case and cabinet convenient to assemble and transport, which comprises a bottom frame, folding plates are mounted on the left side and the right side of the bottom frame, retaining doors are mounted on the front side and the rear side of the bottom frame, hinges are mounted on the bottom edges and the top edges of the folding plates, the hinges on the top edges are connected with a top frame, and the top frame is connected with the folding plates. A hinge on the bottom edge is connected to the bottom frame, a locking hinge is installed in the middle of the folding plate, the folding plate comprises a first frame and a box plate, the bottom frame and the top frame are the same devices, the box plate is a double-layer sandwich plate and comprises an inner lining plate and an anti-collision plate, compression springs are installed between the four corners of the inner lining plate and the four corners of the anti-collision plate, and the inner lining plate and the anti-collision plate are hinged to each other. Heat insulation cotton is installed between the inner lining plate and the anti-collision plate, the inner lining plate and the anti-collision plate are flame-retardant macromolecule polyethylene plates, the blocking door comprises a second frame and a maintenance door, rotating shafts are arranged on the left side and the right side of the bottom edge of the second frame, and the device is simple in structure and convenient to use.

This invention discloses a horizontal rotating fluidized bed boiler, comprising: a main furnace; a frame disposed at the lower part of the main furnace; an air distribution chamber supported on the frame by rolling bearings at its bottom; a drive mechanism fixedly disposed on the frame, its output end being connected to the air distribution chamber for transmission; multiple vertically arranged air distributors in an array, the lower parts of the multiple air distributors being cast together by heavy castable material to form an integral disc structure with a high outer side and a low center; and a dynamic water seal structure, comprising: an annular water tank; and an annular baffle; the annular water tank rotates with the air distribution chamber, while the annular baffle remains stationary, and the outer edge of the disc structure is located above the inner region of the annular water tank. The uniform fluidization of this invention ensures thorough mixing of biomass fuel and air, resulting in more complete combustion and a more uniform temperature field in the main furnace, thereby directly improving thermal efficiency and reducing heat loss from incomplete combustion.

The utility model discloses a rotary kiln combined sealing device and a rotary kiln, and belongs to the technical field of calcining equipment. The combined sealing device comprises a sealing shell arranged outside the rotary kiln cylinder in a sleeving mode, one end of the sealing shell is fixed to the fixing cover, and a sealing cavity is formed between the rotary kiln cylinder and the sealing shell. At least one airtight assembly and at least one oil-tight assembly are sequentially arranged in the sealing cavity in the direction from the fixing cover to the rotary kiln cylinder, the airtight assemblies and the oil-tight assemblies both tightly abut against the interior of the sealing cavity, a fixing ring is arranged between the adjacent airtight assembly and oil-tight assembly for separation, and the fixing rings are fixed to the inner wall of the sealing shell. Wherein all the airtight assemblies are compressed through compression bolts and fixing rings in the axial direction, the compression bolts are fixedly connected to the fixing cover, all the oil-tight assemblies penetrate through the screw rod, one end of the screw rod is fixedly connected to the fixing rings, and nuts are arranged at the other end of the screw rod to compress all the oil-tight assemblies. The sealing structure has a better sealing effect and can adapt to occasions with higher temperature.

The utility model belongs to the technical field of bottle pincers, and particularly relates to a labor-saving bottle pincer device based on the lever principle, which comprises two pincer heads, a lengthening labor-saving handle mechanism is arranged at the bottoms of the two pincer heads, and the lengthening labor-saving handle mechanism comprises two connecting plates, two rotating arms, two connecting rods and two hollow handles. The two rotating arms are arranged on the corresponding connecting plates respectively, the two connecting plates are fixedly connected to the bottoms of the corresponding tong heads, and arc-shaped plates are arranged on the inner sides of the two tong heads. The glass bottle clamp is reasonable in structural design, the power arm is increased and the resistance arm is shortened by increasing the length of the rotating arm and shortening the connecting distance between the rotating arm and the clamp head, according to the lever principle, a person can firmly clamp a glass bottle with small force, the glass bottle clamp is more labor-saving, high-temperature-resistant pads can be efficiently disassembled and assembled in a deformed mode, and the work efficiency is improved. The high-temperature-resistant pad which is greatly abraded can be conveniently replaced, and the high-temperature-resistant effect is guaranteed.

The utility model discloses a high-temperature-resistant flue gas dust remover which comprises a mounting base and a metal filter pipe mounted at the upper end of the mounting base in a clamping manner, a mounting kit is rotatably mounted at the upper end of the metal filter pipe, and a dismounting structure is arranged at the bottom of the mounting base. According to the high-temperature-resistant flue gas dust remover, when particles in flue gas are filtered by the filter sheets in the metal filter pipe, the temperature of the metal filter pipe can be increased under the influence of high temperature, and a heat dissipation structure on the outer side of the metal filter pipe can work, so that stable work of the dust remover is ensured; according to the dust remover, the limiting part can move in the fixing ring by rotating the rotating part, so that the limiting part can limit the bottom of the metal filter pipe, and on the contrary, the limiting part can be separated from the metal filter pipe by rotating the rotating part, so that the metal filter pipe is convenient to disassemble, and the use convenience of the dust remover is effectively ensured.

The preparation method comprises the following steps: 1) dissolving polycarbosilane powder and metal oligomer powder, carrying out high-temperature reflux, distillation and high-temperature crosslinking to obtain a solid, grinding the solid, dissolving the ground solid in an organic solvent to obtain a modified polycarbosilane solution, and dropwise adding a platinum catalyst; adding a silane coupling agent into the graphene oxide dispersion liquid, mixing into the modified polycarbosilane solution, heating, stirring, carrying out rotary evaporation, and grinding to obtain SiC ceramic precursor powder; 2) mixing PVG powder and metal oligomer powder in an organic solvent, performing high-temperature reflux, distillation, high-temperature crosslinking and grinding, and finally performing high-temperature cracking to obtain SiC ceramic filler powder; and 3) carrying out ball milling, tabletting, demolding and high-temperature sintering on the SiC ceramic precursor powder, the SiC ceramic filler powder and the boron powder to obtain the authigenic ultrahigh-temperature ceramic reinforced silicon carbide composite material which is low in density, high in mechanical strength, high-temperature-resistant, antioxidant and capable of being made into complex shapes.

The invention relates to a non-aqueous electrolyte and a lithium ion battery. In order to develop the sulfur-free electrolyte and the lithium ion battery with good high-temperature and cycle performance, the cycle performance, the high-temperature performance and the rate performance of the lithium ion battery are improved by compounding the additive A and the boron-containing lithium salt additive; furthermore, other components in the non-aqueous electrolyte are combined, so that the lithium ion battery still has more excellent high-temperature performance and cycle performance and more excellent safety performance and electrochemical performance when the voltage is increased to 4.5 V or even higher while the high-temperature performance and cycle performance of the lithium ion battery under conventional voltage are ensured. Wherein the structural formula of the additive A is as follows: R1 is selected from alkylene, fluoroalkylene, alkenylene or fluoroalkenylene, and R2 is selected from fluoroalkyl or fluoroalkenyl; and the additive B is boron-containing lithium salt.

The invention discloses repair powder for repairing damaged high-aluminum high-titanium nickel-based cast superalloy after service. The repair powder comprises the following components in parts by mass: 5.0 to 10.0 parts of Cr, 6.0 to 12.0 parts of Co, 2.5 to 10.0 parts of W, 1.0 to 5.0 parts of Mo, 5.0 to 6.5 parts of Al, 0 to 1.5 parts of Ti, 10.0 to 15.0 parts of Ta, 1.0 to 5.0 parts of Re, 0 to 2.0 parts of Hf and 33 to 69.5 parts of Ni. The method for repairing the damaged part of the high-aluminum high-titanium nickel-based cast superalloy after service by using the repairing powder specifically comprises the following steps: step 1, marking a damaged area; 2, removing a damaged area; 3, laser cladding repairing is carried out; step 4, a destressing process; and fifthly, profile recovery is conducted, specifically, the repaired area is machined in the modes of grinding, polishing and the like, and the three-dimensional profile of the part is recovered. The problem that when existing powder for repairing the high Al + Ti nickel-based cast superalloy is used, the high-temperature mechanical property and the environment use performance of a repaired joint cannot be considered at the same time is solved.

The application discloses a basalt fiber rope and a preparation method thereof, and comprises the following steps: selecting basalt fibers and flexible flame-retardant fibers to make the rope, ensuring that each bundle of fiber filaments is clean and tidy, without broken filaments or defects; wrapping 1-2 basalt fibers with a fineness of 500 dtex-2000 dtex with 3 flexible flame-retardant fibers with a fineness of 100 dtex-600 dtex on a doubling machine to form a core yarn; doubling the core yarn to make a twisted yarn one; combining a plurality of core yarns together, and then wrapping the core yarns with a core stranding machine to form a rope strand one with a sheath; weaving the completed rope strand one into a fiber cable one on a weaving machine; and testing the breaking tension of the fiber cable one by using a horizontal tension machine. The method can reduce the damage of the cable to the human body during weaving and is beneficial to actual operation, and can maximize the high-temperature resistance, fire resistance and mechanical properties of the basalt fibers, and meanwhile, the damage to the human body is reduced.

The invention discloses a double-sided iron nitride and titanium coating meltallizing and spraying process which comprises the following steps: 1) preparing a composite material, 2) stamping and nitriding, 3) polishing and cleaning, 4) preparing a coating, 5) meltallizing and spraying, 6) polishing and checking, stacking low-carbon steel materials on two sides of 3003 aluminum to prepare the composite material, and then carrying out 530 DEG C high-temperature nitriding treatment on the composite material to improve the anti-rust performance of the material. Then, in order to prevent heavy metal from being separated out in the using process of a finished product of the iron nitride composite material, after the composite material is formed, a titanium metal coating material is sprayed to the inner surface of the composite material through a plasma meltallizing spraying technology, and a titanium metal coating is formed; by utilizing the characteristics of good heat resistance, excellent biocompatibility and the like of titanium metal, the high temperature resistance, corrosion resistance and the like of the composite material are effectively improved through the process, the use performance of a finished product is improved, and heavy metal precipitation of the finished product is prevented.

The utility model discloses a high-temperature-resistant anti-adhesion automobile wire, which comprises a wire core, the wire core is a plurality of groups of single wire stranded wires, each group of single wires is formed by stranding a plurality of bundles of metal wires drawn at one time, the stranding direction is leftward, the metal wires are soft round copper wires or tinned soft round copper wires with the purity of more than 99.99%, the section of each metal wire is 4.0 mm < 2 >, the maximum diameter of each single wire is 0.30 mm, and the diameter of each single wire is 0.20 mm. An insulating layer is arranged on the outer side of the wire core, a high-temperature-resistant layer is arranged on the outer side of the insulating layer, a shielding layer is arranged on the outer side of the high-temperature-resistant layer, a flame-retardant layer is arranged on the outer side of the shielding layer, a sheath layer is arranged on the outer side of the flame-retardant layer, and an anti-adhesion layer is arranged on the outer side of the sheath layer. The surface of the sheath layer of the automobile wire adopts a novel separant, so that the product is prevented from adhesion in the use process, the automobile wire has good processability, the use safety and stability of the wire are ensured, and the insulating layer adopts a silicone rubber material, so that the automobile wire has high temperature resistance, bending resistance and delayed combustion resistance.

The invention relates to an alumina-based corundum mullite hollow sphere with a gradient structure and a preparation method of the alumina-based corundum mullite hollow sphere, and belongs to the field of heat-insulating refractory materials. The preparation method comprises the following steps: firstly, carrying out mineral separation and grading homogenization on high-alumina bauxite, then uniformly mixing III-grade high-alumina bauxite, silica, a mixed additive and an organic binding agent according to a certain mass percent, and carrying out granulation; the preparation method comprises the following steps: by taking spherical particles as cores, sequentially wrapping II-grade high-alumina bauxite and I-grade high-alumina bauxite under the rotation of a pelletizer, so as to obtain heterogeneous spherical particle blanks rich in SiO2 inside; and calcining at high temperature to finally obtain the corundum mullite hollow sphere with the gradient structure. The refractory hollow sphere is subjected to gradient structure design through a combined process of grading homogenization, coating forming and high-temperature calcination in-situ pore forming of high-alumina bauxite, phase performance characteristics of corundum and mullite are fully utilized, and the refractory hollow sphere which is low in heat conductivity coefficient, good in erosion resistance, high in use temperature and excellent in thermal shock resistance is developed.

The invention provides a reaction kettle and a non-ferrous smelting pressurization system, and relates to the technical field of stirring reaction equipment in the non-ferrous smelting industry, the reaction kettle comprises a kettle body, the kettle body comprises a shell and a lining structure, and the shell is a metal shell; the lining structure comprises at least one lining brick layer and a non-metal isolation layer, and the lining brick layers and the non-metal isolation layer are sequentially arranged in an inner cavity of the shell from inside to outside in a sleeving mode; each lining brick layer comprises a plurality of acid-proof bricks, all the acid-proof bricks are arranged on the same plane and connected, a brick joint is formed at the joint of any two adjacent acid-proof bricks, and a containing cavity used for containing materials is defined by the side, away from the non-metal isolation layer, of the innermost lining brick layer. The non-metal isolation layer is used for isolating materials leaking from the brick joints to the inner wall face of the shell. According to the invention, rigidity and strength can be guaranteed, and good corrosion resistance, wear resistance, impact resistance and high temperature resistance can be achieved at the same time.