272 results about "Nanoceramic" patented technology

The invention discloses a double-component reinforced 5Y-PSZ dental ceramic material and a preparation method thereof, and relates to the technical field of ceramic material preparation. The method comprises the following steps: mixing ZrCl4 and deionized water, and dropwise adding an ammonia water solution to prepare m-ZrO2 nano ceramic powder; zrOCl2. 8H2O, Y (NO3) 3.6 H2O and deionized water are mixed, the m-ZrO2 nano ceramic powder and polyethylene glycol 2000 are added, and the material is prepared through calcination, spray granulation, hot-pressing presintering and high-temperature sintering. According to the 5Y-PSZ dental ceramic material disclosed by the invention, the nano-scale m-phase ZrO2 is adopted as a reinforcing material and is dispersed and distributed inside the 5Y-PSZ, and through volume expansion generated by t-m phase change of the m-phase ZrO2, the anti-aging performance is guaranteed, and meanwhile, the reinforcement of the 5Y-PSZ dental ceramic material is realized. The invention solves the problem of insufficient strength of the 5Y-PSZ dental ceramic material in the prior art.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a multi-layer composite self-repairing anti-oxidation coating for a boiler heating surface and a preparation method of the multi-layer composite self-repairing anti-oxidation coating aiming at the technical problems that a thermal power boiler heating surface protective coating is insufficient in bonding strength, insufficient in long-term anti-oxidation capacity and concentrated in interface stress among multi-layer structures. Comprising a bonding layer, a gradient transition layer, a self-repairing functional layer and a ceramic surface layer which are sequentially arranged from inside to outside. The self-repairing functional layer is made of NiCoCrAlY alloy, the bonding layer is made of NiCrAlY alloy, the gradient transition layer comprises four layers of gradient transition layer units, each layer of gradient transition layer unit comprises a gradient composite structure of NiCrAlY and nano Al2O3, the self-repairing functional layer comprises NiCoCrAlY serving as a base body, thermal response type microcapsules are embedded in the NiCoCrAlY base body, and the ceramic surface layer comprises a nano ceramic material composed of Cr, Co, Ni, Fe, Al, Ti and B elements.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a boiler heating surface high-temperature corrosion protective coating and a preparation method thereof in order to solve the technical problems that in the prior art, a nano ceramic coating and a metal alloy coating for treating thermal power boiler heating surface high-temperature corrosion are insufficient in adhesive force, prone to falling off and short in protection service life. Through multi-layer structure design and technological parameter optimization, a coating system has continuous thermal expansion coefficient gradient distribution in the interval of 500-900 DEG C, the metal bonding layer at the bottom layer has a pore structure which can effectively absorb thermal stress, the nano ceramic layer at the surface layer can maintain high-temperature stability, and it is verified that the overall bonding strength is larger than or equal to 35 MPa, and the thermal expansion coefficient is larger than or equal to 10%. Compared with a traditional single-layer coating, the adhesive force is improved by 200% or above, and therefore the technical problems that in the prior art, adhesive force is insufficient, thermal stress is not matched, and high-temperature softening fails can be effectively solved.

The invention relates to the technical field of battery materials, in particular to a para-aramid lithium battery diaphragm and a preparation method thereof. The para-aramid lithium battery diaphragm comprises para-aramid slurry and a base membrane, the para-aramid slurry is coated on the two sides of the base membrane to form para-aramid coatings, and the para-aramid slurry comprises the following raw materials in parts by weight: 20-40 parts of modified para-aramid polymer liquid, 10-20 parts of nano ceramic composite material powder and 10-18 parts of a solvent; the nano ceramic composite material powder is prepared from the following raw materials in parts by weight: 50 to 100 parts of nano aluminum oxide, 8 to 12 parts of nano zirconium dioxide, 0.3 to 0.8 part of yttrium oxide, 1 to 5 parts of magnesium nitrate hexahydrate, 0.1 to 1 part of polyacrylic acid, 1 to 2 parts of ammonia water, 1 to 3 parts of coupling agent and 20 to 30 parts of silicon dioxide; the nano ceramic composite material powder is added into the para-aramid slurry, so that the para-aramid diaphragm has better thermal stability, and the phenomenon of thermal shrinkage of the diaphragm at high temperature is reduced.

The invention belongs to the technical field of composite material manufacturing, and discloses a structural battery integrated composite board and a forming method and application thereof. According to the composite board, carbon fiber reinforced materials are adopted as positive and negative electrodes, glass fiber materials are adopted as a diaphragm and an insulating layer, epoxy resin-based solid-state structure electrolyte is adopted as a bonding packaging medium, and a curing agent, ionic liquid, electrolyte lithium salt, nano ceramic particles and other auxiliaries of specific types and proportions are introduced into epoxy resin; the multifunctional modification of the resin matrix is realized. And meanwhile, doping and surface grafting modification are performed on the electrode material, so that the energy density and the mechanical strength of the battery are improved. And further constructing a low-temperature formed metal or carbon-based circuit layer on the outer surface of the structural battery to form an integrated complex comprising the circuit board, the structural battery and the bearing structure. The composite board satisfies dielectric insulation and reliability, realizes integrated energy supply and signal processing, and is widely applied to weight and volume sensitive fields such as aerospace and new energy automobiles.

The invention discloses a preparation method of a MgO-MgA12O4-ZrO2 nano ceramic eutectic composite material. The preparation method comprises the following steps: S1, preparing powder; s2, flash firing preparation; and S3, high-temperature melting preparation. According to the invention, two technologies of flash sintering and high-temperature melting are combined, the problems of high sintering temperature, easy growth of crystal grains, difficult densification and the like of the traditional eutectic ceramic are solved, and an excellent composite material with a nanoscale eutectic structure is finally obtained; a nanocrystalline blank obtained through flash sintering is crushed and then subjected to high-temperature melting, microdefects and air holes possibly existing in the flash sintering blank are eliminated, the chemical components and the microstructure of a final product are more uniform, and compared with traditional selective laser melting, the method is more convenient and faster to implement and lower in cost.

The invention discloses a high-temperature-resistant maintenance-free nano dust filtration system and method, and belongs to the technical field of dust filtration systems. The system comprises a dust filtering main body, a nano ceramic filter element assembly, an automatic blowback system and a control system. The nano ceramic filter element is sequentially provided with an outer coarse filter layer, a middle medium filter layer and an inner fine filter layer from outside to inside, so that a radial gradient aperture structure is formed, and graded interception of dust is realized. The automatic blowback system is configured in a way that double electromagnetic pulse valves are connected in series to form double-peak collaborative blowback airflow which is firstly subjected to high-pressure impact stripping and then is subjected to high-flow removal. The control system continuously collects pressure difference data and calculates the pressure difference change rate, the remaining time for reaching a pressure difference threshold value is predicted according to the pressure difference change rate, the back flushing triggering opportunity is judged, self-adaptive dust removal control is achieved, meanwhile, the pressure difference recovery rate before and after back flushing is calculated, and back flushing parameters are automatically adjusted. According to the invention, high-efficiency purification of high-temperature dust-containing gas and long-term maintenance-free operation of the system are realized, and the service life of the filter element is remarkably prolonged.

The application provides a preparation method of laser additive manufacturing crack-free Ni3Al-based high-temperature alloy, comprising the following steps: (1) uniformly mixing micron-sized Ni3Al-based high-temperature alloy powder and nano Hf ceramic particles, so that the nano Hf ceramic particles are uniformly wrapped on the surface of the micron-sized Ni3Al-based high-temperature alloy powder, to obtain a composite powder; (2) drying the composite powder; (3) layer-by-layer melt forming the composite powder by using a laser directional deposition device, to obtain the laser additive manufacturing crack-free Ni3Al-based high-temperature alloy. The application also provides the laser additive manufacturing crack-free Ni3Al-based high-temperature alloy prepared by the method. The preparation method of the laser additive manufacturing crack-free Ni3Al-based high-temperature alloy can prepare the crack-free Ni3Al-based high-temperature alloy by the laser additive manufacturing method, and is simple in preparation and low in cost.

This invention discloses a method for preparing high-strength aluminum-magnesium-manganese alloy materials, belonging to the field of metallic materials technology. The method uses aluminum as a matrix and adds elements such as magnesium, manganese, zinc, copper, zirconium, and titanium to prepare a master melt. A nano-ceramic suspension of yttrium oxide is prepared, atomized and dried into powder, and blown into the melt to introduce nanoparticles. Semi-continuous casting, homogenization heat treatment, intense plastic deformation such as equal-diameter angular channel extrusion, hot rolling, and aging treatment are employed to achieve nanoparticle dispersion strengthening. Optimizations include nanoparticle replacement, multiphase strengthening, parameter adjustment, and in-situ phase formation, which refine the alloy grain to 80-200 nm, significantly improving strength. Compared with existing technologies, this invention's process is environmentally friendly and precisely controlled, suitable for high-strength applications such as inverter housings, achieving a tensile strength of over 450 MPa and an elongation ≥10%.

This utility model relates to an industrial electronic wire in the field of electronic wires, comprising a split stepped conductor, an insulating layer, and a composite shielding layer. The insulating layer is disposed on the outside of the split stepped conductor, and the composite shielding layer is disposed on the outside of the split stepped conductor. The split stepped conductor comprises a corrugated conductor, a first copper core, and a second copper core, with the first and second copper cores spirally wound in opposite directions on the surface of the corrugated conductor. The insulating layer comprises a layer of nano-ceramic modified polyolefin, an aramid fiber reinforced epoxy resin layer, and a fluororubber layer, all layered and laminated. The aramid fiber reinforced epoxy resin layer has embedded protrusions. The composite shielding layer comprises a tin-plated copper wire braided mesh, an aluminum foil strip, and a hot-melt conductive adhesive, with the tin-plated copper wire braided mesh and the aluminum foil strip spirally wound alternately. This utility model enhances mechanical strength through the split stepped conductor structure, and improves interface bonding and electromagnetic shielding durability through multi-layer composite and anchoring design.

The invention discloses a gradient strengthening preparation method of a cast high-entropy alloy composite material based on a laser cladding preform, and belongs to the technical field of metal matrix composite material preparation. The method comprises the following steps: firstly, preparing composite powder of a high-entropy alloy and a nano ceramic reinforced phase by combining plasma-assisted ball milling with a pulse electromagnetic field; then constructing a prefabricated body with a gradient pore structure by adopting an intelligent regulation and control laser cladding technology; the prefabricated body and a congruent-component high-entropy alloy cast ingot are innovatively metallurgically bonded through a vacuum gradient infiltration process, and a large-size overall composite material is prepared; and finally, forming a gradient nanostructure on the surface layer of the material through ultrasonic-assisted laser surface reconstruction and small-deformation gradient heat treatment. According to the method, the technical problems that reinforcing phases are uneven in distribution, the interface bonding strength is low, and large-size components are difficult to prepare are successfully solved, the prepared composite material has the excellent gradient performance that the surface hardness is larger than or equal to 12 GPa, and the core hardness is larger than or equal to 8 GPa, ceramic particles are evenly distributed in a three-dimensional network shape, the 800-DEG C high-temperature oxidation resistance is improved by 30% or above compared with a traditional high-entropy alloy, and the composite material is suitable for large-size components. The method is particularly suitable for manufacturing high-performance key components in the fields of aerospace, national defense and military industry and the like.

The invention provides a locking ring type synchronizer conical surface composite texture optimized multi-gear gearbox structure. The locking ring type synchronizer conical surface composite texture optimized multi-gear gearbox structure is characterized in that a gearbox is composed of a shell, an input shaft assembly, an output shaft assembly, a gear transmission mechanism, a synchronous gear shifting mechanism and a lubricating and cooling system. The shell is designed by integrating light-weight aluminum alloy and nano ceramic radiating fins, the input / output shaft improves the transmission stability through a high-precision bearing and an overload protection structure, the gear transmission mechanism optimizes the efficiency through a modification straight gear and a planetary gear train, and the synchronous gear shifting mechanism is connected with an electronic sensor through a composite texture lock ring. According to the gearbox, the problems that a traditional gearbox is insufficient in heat dissipation, large in gear shifting impact, low in lubricating efficiency and the like are solved, transmission efficiency is improved, and the gearbox is suitable for high-end equipment such as new energy automobiles and heavy machinery.

The invention discloses a nano ceramic anti-corrosion heat-dissipation coating, and belongs to the technical field of coatings. Comprising a paint component A and a curing agent component B, wherein the paint component A comprises the following raw materials in parts by weight: 40-60 parts of modified epoxy resin, 15-20 parts of modified ceramic powder, 35-55 parts of a solvent, 0.6-1.2 parts of a dispersing agent, 0.3-0.6 part of a defoaming agent and 0.2-0.4 part of a flatting agent. According to the coating prepared by the invention, four ceramic fillers are introduced, so that the heat dissipation performance and the corrosion resistance of the coating can be remarkably improved; ceramic powder is subjected to surface modification through a silane coupling agent, so that the dispersity and interface bonding force of filler in a resin matrix are improved, and the overall performance is improved; the epoxy resin is modified, so that the corrosion resistance and heat resistance of the coating are further improved; in conclusion, the anti-corrosion heat dissipation coating successfully integrates the anti-corrosion function and the heat dissipation function, and the problem that the anti-corrosion performance and the heat dissipation performance of a traditional coating are difficult to consider at the same time is solved.

The invention relates to the technical field of ignition guns for coke oven ascension pipes, in particular to a quick-ignition and strong-wind-resistance nanometer ceramic heating body ignition gun for a coke oven ascension pipe. Comprising a porous protective gun head, a 90-degree bent gun body and a junction box which are connected in sequence, the nano ceramic crystal heating body is arranged in the porous protective gun head and is used for raising the temperature to 800 DEG C or above within 2 seconds; a plurality of vent holes distributed in an annular array are formed in the front end of the porous protective gun head, so that wind-resistant flames are formed; the gun body bent by 90 degrees comprises an inner heat insulation layer and an outer gun barrel arranged outside the inner heat insulation layer in a sleeving mode, and a heat insulation gap is formed between the inner heat insulation layer and the outer gun barrel. The junction box is of a modular structure and is arranged at the tail end of the gun body. The device can be quickly started, has strong wind interference resistance and extreme high temperature resistance, and is convenient to maintain.

The application discloses a control system for inhibiting coking of a heating surface of a coal-fired boiler, and the control system comprises a first temperature measuring device for monitoring the flue gas temperature at the inlet of a partition screen superheater, a second temperature measuring device for monitoring the flue gas temperature at the inlet of a final-stage superheater, a third temperature measuring device for monitoring the flue gas temperature at the inlet of a final-stage reheater, and a nano-ceramic material spraying layer arranged on a water cooling wall; wherein, based on the initial temperature data monitored by the first temperature measuring device, the second temperature measuring device and the third temperature measuring device, the area of the nano-ceramic material spraying layer is set so that the water cooling wall has a suitable range of heat absorption, the flue gas temperature at the inlet of the partition screen superheater is T1, the flue gas temperature at the inlet of the final-stage superheater is T2, and the flue gas temperature at the inlet of the final-stage reheater is T3, thereby inhibiting the coking of the heating surface of the coal-fired boiler.

The invention relates to the technical field of coatings, in particular to an MOFs enhanced nano ceramic coating material, a preparation method and application of the MOFs enhanced nano ceramic coating material to a heat insulation film. The preparation method comprises the following steps: firstly, coating the surface of Al2O3 / ZrO2 nano composite ceramic with ZIF-8 through an in-situ growth method to form MOFs enhanced nano ceramic composite powder with a core-shell structure; performing amino modification by using an amino silane coupling agent, and grafting polyacrylic acid by using an amidation reaction catalyzed by DCC / DMAP (dicyclohexylcarbodiimide / dimethylaminopyridine), so as to obtain surface carboxylated modified nano ceramic composite powder; and finally, mixing and dispersing the modified powder with organic silicon resin containing hydroxyl functional groups, a polyvinylpyrrolidone dispersing agent, a polyether modified polydimethylsiloxane flatting agent, a polyoxyethylene polyoxypropylene glycerol ether defoaming agent and ethanol to obtain the MOFs enhanced nano ceramic coating material. The coating has low thermal conductivity and high mechanical strength, and the powder has good dispersion stability in the coating, so that the coating can be widely applied to the field of heat-insulating films.

The utility model relates to the technical field of automobile film manufacturing, and discloses a PET (Polyethylene Terephthalate)-based composite coating automobile solar film laminated structure which comprises an outer laminated film layer, an inner adhesive film layer is adhered and fixed on the bottom surface of the outer laminated film layer, the outer laminated film layer comprises a PET base layer, a main grid layer is embedded in the PET base layer, and the inner adhesive film layer is adhered and fixed on the inner adhesive film layer. The upper side and the lower side of the main grid layer are connected with connecting wires, a UV absorption layer is attached to the bottom face of the PET base layer, a second grid layer is embedded into the UV absorption layer, and a groove layer is formed in the top face of the PET base layer. The PET base layer, the UV absorption layer and the nano ceramic coating are mutually overlapped and fixed, the main grid layer, the second grid layer and the third grid layer are distributed and embedded among the PET base layer, the UV absorption layer and the nano ceramic coating, and the three groups of grids are connected and fixed through the connecting wires, so that the structure between the overlapped film layers is reinforced, and the film layers are not easy to deform. And the structure use stability is kept.

The application relates to the technical field of ceramic slurry, in particular to a nano ceramic slurry for light-curing forming and a preparation method thereof. The application provides a nano ceramic slurry with high solid content and low viscosity, which comprises 35wt%-90wt% ceramic powder, 10wt%-65wt% photosensitive resin, 2wt%-5wt% dispersant of the mass of the ceramic powder and 1wt%-5wt% sintering aid of the mass of the photosensitive resin. The ceramic slurry prepared by combining mechanical mixing with ball milling has a solid content as high as 60.21vol% and a viscosity as low as 24778 mPa.s. The low viscosity is favorable for the flattening of the slurry in the printing process, improves the final printing quality, the high solid content can reduce the cracking problem of the ceramic embryo in the subsequent debinding and sintering process, and improves the ceramic density.

The nanopowder includes a nanoparticle having a core particle with a thin film coating. The core particle is formed independently of the thin film coating from at least one of a rare earth metal-containing oxide, a rare earth metal-containing fluoride, a rare earth metal-containing oxyfluoride, or a combination thereof. Thin film coatings may be formed using non-direct vision techniques such as atomic layer deposition (ALD). Also disclosed herein are nanoceramic materials formed from the nanopowders and methods of making and using the nanopowders.

The invention discloses an insulating nano ceramic coating and a preparation method thereof, relates to the technical field of coatings, and belongs to the patent classification number C09D1 / 00. The preparation method comprises the following steps: firstly, carrying out hydroxylation activation and silane modification treatment on nano aluminum oxide and nano zirconium oxide, and grafting polymer chains on the surfaces of the nano aluminum oxide and the nano zirconium oxide through a polymerization reaction to obtain grafted modified nano ceramic powder so as to enhance the dispersity and compatibility of the grafted modified nano ceramic powder in a resin matrix; meanwhile, the acrylic polysiloxane resin is subjected to epoxy modification and is subjected to a cross-linking reaction with 3-aminopropyltriethoxysilane and polyethylene glycol diglycidyl ether, so that resin with a cross-linked network structure is synthesized; and finally, mixing the modified resin, the grafted modified nano ceramic powder, a mixed solvent, polyamide wax, an organic silicon defoaming agent, an acrylate film-forming agent, gamma-aminopropyltriethoxysilane hydrolysate and other auxiliaries, stirring and fusing to obtain the final insulating nano ceramic coating. The nano ceramic coating disclosed by the invention has excellent insulating property.

The application relates to a high-temperature-resistant high-entropy ceramic battery shell and a preparation method thereof. The battery shell comprises a battery shell base material and a high-entropy oxide ceramic coating attached to the surface. The coating comprises an organic-inorganic hybrid cross-linked network and a nano ceramic powder; the powder has a single cubic phase fluorite structure, and a general chemical formula is AB2O4, wherein a rare earth element is a positive trivalent element not containing cerium. The powder particle size distribution satisfies D50 / D90 < 2.5, and a coating and a base material interface form a covalent bond. During preparation, a nano slurry is obtained through high-temperature calcination and sand milling, a bonding system is constructed by combining a silane coupling agent and an inorganic sol, and a high-adhesion coating is generated in situ through coating and low-temperature curing. The application solves the thermal mismatch combination problem of high-entropy ceramics and a metal base material, and significantly improves the limit thermal protection performance of the battery shell under a transient working condition of more than 1600 DEG C.

This invention provides a high-strength, high-toughness, and high-thermal-stability nanoparticle-reinforced AZ91 magnesium alloy and its preparation method. The preparation method includes the following steps: mixing niobium-titanium-aluminum alloy powder, BN powder, and C powder, then sealing the mixture in an aluminum tube to obtain an aluminum-powder composite tube blank containing powder particles; then subjecting the composite tube blank to cold drawing and alternating heat treatment, melting, mixing with molten pure aluminum, and twin-roll casting to obtain an intermediate alloy wire containing nano-ceramic particles; mixing the preheated intermediate alloy wire with molten magnesium alloy, followed by mechanical stirring, ultrasonic dispersion, refining and degassing, and cleaning. A high-strength, high-toughness, and high-thermal-stability nanoparticle-reinforced AZ91 magnesium alloy is obtained by slag removal, casting, homogenization treatment, air cooling, extrusion molding, and annealing. The magnesium alloy has a room temperature yield strength of 178.7-290.2 MPa, a tensile strength of 238.9-389.1 MPa, and a fracture strain of 12.4-14.6%. After serving at 150-180℃ for 30-100 hours, the yield strength is 120.3-151.8 MPa, the tensile strength is 158.1-203.6 MPa, and the fracture strain is 38.7-61.9%.

The utility model discloses a high-pressure liquid nano ceramic electric heater for an automobile, which comprises a shell, symmetrically arranged heating bodies are arranged at the bottom in the shell, round pipes are arranged in the heating bodies, one end of each heating body is connected with the shell, a first sealing ring is arranged at the joint of the shell and each heating body, and a second sealing ring is arranged at the joint of the shell and each heating body. The shell is internally provided with an integrated controller electrically connected with the heating body, the integrated controller is provided with an insulating heat-conducting fin used for heat dissipation, the shell is provided with a first pressing block used for fixing the heating body, and a top opening in the shell is provided with a second pressing block. When passing through the water channel, liquid quickly flows through the surface of the heating body to realize high-efficiency heat exchange; a blind hole is formed in the water channel and used for placing a temperature sensor to collect the liquid temperature and a heating body, and the reinforcing ribs can weaken noise generated by liquid circulation; and the pressure generated in the working process of the heater can be released through the arrangement of the waterproof ventilation valve.

This utility model relates to the field of anti-corrosion fluid distributor technology. The anti-corrosion fluid distributor device for a valley-electricity thermal storage heating system includes a distributor body, reinforcing ribs, an anti-corrosion mechanism, and a monitoring module. This utility model has the following advantages: The nanomaterial layer of this application adopts a multi-layer structure of "epoxy primer layer + nano-ceramic intermediate layer + polyurethane top layer," achieving multi-layer composite protection and solving the problem of easy peeling of traditional epoxy resin coatings at high temperatures. The corrosive elastic metal layer (such as zinc, aluminum, and other reactive metals) embedded inside the retention pipe can preferentially react with corrosive ions in the fluid through the principle of electrochemical corrosion, consuming itself to protect the metal of the distributor body. Simultaneously, the elastic material can adapt to fluid impact and temperature deformation, preventing cracking of the protective layer.

The invention provides a preparation method of an anti-oxidation coating from inside to outside, which comprises the following steps: A) preparing an MCrAlY alloy layer on the surface of a pretreated matrix, M being one or more selected from Ni, Co or Fe; b) spraying MCrAlY powder and nano ceramic powder on the surface of the MCrAlY alloy layer to obtain a nanocrystalline composite layer; c, the nanocrystalline composite layer is subjected to laser remelting and then cooled, and the anti-oxidation coating is obtained.The compact diffusion barrier layer is prepared through a controllable atmosphere spraying technology, is used for inhibiting easy-to-oxidize elements in a base body from migrating to the surface under the high-temperature service condition and is suitable for high-temperature components such as aero-engine blades and nuclear reactor components.

The invention relates to the technical field of aluminum alloy for aerospace, and discloses an aluminum alloy punching machine for aerospace, which is characterized in that liquid outlet structures are respectively arranged on the inner wall of a female die and the outer wall of a male die, the bottom of a piston pump is communicated with two one-way valves, one one-way valve is used for controlling liquid discharge, the one-way valve is horizontally arranged, and the other one-way valve is used for controlling liquid discharge. According to the device, the piston pump drives the fluorine coating containing the nano ceramic particles to be directly sprayed to an aluminum alloy forming part from liquid outlets in the female die and the male die, so that the aluminum alloy forming part can be formed, and the aluminum alloy forming part can be formed through the liquid outlets in the female die and the male die; and the fluorine coating is more uniformly covered, so that waste and covering dead angles of external spraying are avoided, meanwhile, the process of spraying the aluminum alloy from the outside is omitted, the machining process of the aluminum alloy is further simplified, and the stamping efficiency is improved.

The invention provides a cable with good wear resistance and a connecting assembly thereof, and relates to the technical field of cables, the cable with good wear resistance comprises a cable main body and an outer sheath, the cable main body is arranged at the inner side of the outer sheath, and the outer side of the outer sheath is coated with a wear-resistant layer; the cable body comprises a lining layer, three copper conductive cores are arranged on the inner side of the lining layer, the outer sides of the copper conductive cores are fixedly sleeved with an inner sheath, a gap between the inner side of the lining layer and the inner sheath is filled with a filling layer, the outer side of the lining layer is fixedly sleeved with a honeycomb sleeve, and a plurality of honeycomb holes are evenly formed in the peripheral wall of the honeycomb sleeve in a penetrating mode. The wear-resistant layer wrapping the outer side of the outer sheath of the cable is made of a nano ceramic particle enhanced fluororubber material which has excellent scratch resistance and wear resistance and can effectively resist friction between the cable and the ground, a pipeline and a wall in the laying process and external mechanical scratch in long-term use; and the risk of exposure of the internal cable main body caused by damage of the outer sheath is reduced.

The utility model relates to an ore grinding machine with specification-adjustable nano ceramic balls, which belongs to the technical field of ore grinding and comprises a grinding bin, a top cover detachably connected to the top of the grinding bin, a feed port fixedly communicated with the top of the top cover and a discharge pipe fixedly communicated with the bottom of the grinding bin. A self-adaptive grinding mechanism extending into the top cover is arranged on the upper surface of the top cover, and a cooling mechanism extending out of the grinding bin is arranged on the upper surface of the top cover. According to the ore grinding machine capable of adjusting the specifications of the nano ceramic balls, when a double-shaft motor is started, a main bevel gear and an auxiliary bevel gear are driven to be in transmission fit, and under the elastic force action of a reset spring, a sliding sleeve slides on a transmission shaft to drive a supporting rod and a movable plate to be expanded or contracted, so that the specifications of the nano ceramic balls are adjusted; and through centrifugal force and impact force generated by rotation, the ball bodies of the nano ceramic balls achieve the optimal grinding effect in the grinding bin, and the advantage of high grinding efficiency is achieved.

The present invention relates to a self-cooling nanoceramic additive in the form of an aqueous dispersion comprising emissive and reflective minerals. Said additive of the present invention is used to produce self-cooling architectural paints (single-layer coatings). The specific composition of the additive efficiently reflects sunlight, reduces heat absorption, emits thermal radiation, improves the durability of protected surfaces, reduces power consumption for cooling, and provides a formulation that is compatible with various solvents and materials, thereby facilitating its application on architectural coatings.

The invention belongs to the technical field of functional films, and discloses a water-based poly-ceramic optical film and a preparation method thereof.The water-based poly-ceramic optical film is a composite film of a compact inorganic-organic hybrid structure formed by bonding a nano-ceramic component into an organic network through a polymerization technology; the preparation method comprises the following steps: sequentially coating a pre-prepared modified resin solution and a surface layer solution containing inorganic modified particles on the surface of a pretreated matrix, and then heating and curing to obtain the water-based poly-ceramic optical thin film. By means of the preparation method, degradation of polymer molecular chains of the water-based polyceramic optical thin film due to ultraviolet radiation can be effectively avoided, internal stress generated by difference of thermal expansion coefficients between materials is reduced, and the light transmittance of the water-based polyceramic optical thin film is improved.