52 results about "Silica coating" patented technology

The application discloses an amorphous silicon dioxide coating prepared based on micro-arc oxidation, a preparation method and application thereof, and belongs to the technical field of metal surface protection and silicon dioxide coating. In the application, a magnesium alloy, an aluminum alloy, a titanium alloy, a titanium-aluminum base and a nickel-aluminum base are used as anodes and are placed in a micro-arc oxidation tank, a hydrolytic solution of organic silicon is used as an electrolyte, and an amorphous silicon dioxide coating with a thickness of more than 100 mu m can be prepared within 20 minutes through a step-by-step step-incremental constant potential control means. The application utilizes the advantages of the micro-arc oxidation process and the sol-gel process, avoids their shortcomings, and realizes the superimposed synergistic effect of "1+1>2". The process steps of the application are simple, and the application is very suitable for full-automatic operation and processing in industry. The amorphous silicon dioxide coating with the required thickness, wear resistance, corrosion resistance, erosion resistance, oxidation resistance and other characteristics can be prepared by changing the electrolyte concentration, the micro-arc oxidation time and the electric control parameters, or through the conventional micro-arc oxidation constant voltage and constant current control means.

This invention belongs to the field of tertiary oil recovery technology, specifically relating to a CO2-switched magnetically driven nanoparticle, its preparation method, and its application. The magnetically driven nanoparticles are silica-coated Fe3O4 nanoparticles. The surface of the silica coating is further modified with amidine groups to act as CO2 switches. These CO2 switches cause the hydrophilicity of the magnetically driven nanoparticles to increase with the increase of CO2 solubility in the solution in which they are located. This invention integrates emulsification and demulsification functions through the CO2 switch loaded on the surface of the magnetically driven nanoparticles. Furthermore, the particles can be recycled using their own magnetic response, reducing costs. This nano-displacement agent can solve the problems of poor efficiency, ineffective oil-water separation, high economic costs, and environmental impact associated with existing displacement agents.

The application relates to the technical field of wastewater treatment, in particular to a preparation method of a porous medium plate, a plasma device and a wastewater treatment equipment. The application dips an aluminum oxide plate into a first sol containing silicon dioxide to obtain an aluminum oxide plate loaded with a silicon dioxide coating. The silicon dioxide coating has a large specific surface area and hydroxyl groups exist on the coating surface, the hydroxyl groups can be combined with or adsorbed by low-lifetime active substances, the retention time of the low-lifetime active substances is prolonged, and the concentration and utilization rate of the low-lifetime active substances are improved. Due to the existence of the hydroxyl groups and the large specific surface area of the silicon dioxide coating, the silicon dioxide coating has strong adsorption capacity, so that the active substances adsorbed on the surface of the medium plate are increased, and then the reaction rate of the active substances and perfluorinated compounds is improved, so that the perfluorinated compounds are more completely degraded. The silicon dioxide has good dielectric properties, can enhance the dielectric constant and resistivity of the medium plate, and plays a positive role in the generation and transmission of the plasma.

The invention discloses high-speed dispersion equipment for nano silicon dioxide coating processing, and belongs to the technical field of coating processing equipment. The stirring mechanism is arranged below the driving mechanism and comprises a middle stirring assembly and a bottom stirring assembly, the middle stirring assembly comprises an inner packing auger and an outer packing auger, the outer packing auger is arranged outside the inner packing auger in a sleeving mode, and the driving mechanism is used for driving the inner packing auger and the outer packing auger to do reciprocating rotation in opposite directions; the bottom stirring assembly comprises a plurality of stirring blades, and the driving mechanism is also used for driving the plurality of stirring blades to rotate and perform planetary rotation at the same time; the bubble removing mechanism is arranged below the driving mechanism, and the bubble removing mechanism is used for collecting and breaking bubbles on the liquid surface of the coating; through the overall structure arrangement, the paint dispersing effect is improved, and meanwhile bubbles generated in the dispersing process are eliminated.

The present application belongs to the technical field of hydrogel dressings, and particularly relates to a wet compress gel and application thereof. The wet compress gel comprises a functional component and a gel component; the functional component comprises composite silica gel balls, aluminum hydroxide, calcium carbonate and magnesium carbonate; the wet compress gel is packed in a breathable outer layer of a package to obtain a wet compress gel bag. In use, the wet compress gel bag can be heated by a microwave oven or hot water to apply heat to human skin, and the mineral beneficial factors can be released to the human body through the silica coating of deep-sea mud and shell powder; the obtained wet compress gel bag has excellent cold storage and heat storage performance, and the gel material has stable performance and better durability, and still has good cold storage and heat storage performance after multiple uses; the wet compress gel bag gel of the present application combines beneficial minerals and colloids, so that the gel has a Q elastic feel, and solves the common poor feel problem of cold and hot compress gels on the market which have strong flowability or weak resilience.

The invention belongs to the technical field of touch screens, and particularly relates to a touch screen with a scratch-resistant coating. The touch screen is high in sensitivity, the coating prepared through hybridization of the organic silicon emulsion and the inorganic silica sol can form nanoscale honeycomb-shaped pores, the problem that a pure inorganic silicon dioxide coating is prone to cracking can be solved, the inorganic silica sol forms cross-linked silicon dioxide particles in the curing process, and when the surface of the touch screen is scratched, the surface of the touch screen is not prone to cracking. The particles can support each other, so that the surface hardness and the scratch resistance are improved; according to the glass substrate, alkali metal is replaced with boron oxide, the melting processing performance of glass is improved during glass melting, the problem of screen failure caused by rapid diffusion of alkali metal cations in the glass after the alkali metal is added is solved, the prepared glass substrate has excellent hardness due to high-content aluminum oxide, and the service life of the glass substrate is prolonged. Through zirconium dioxide, the hardness, wear resistance and chemical corrosion resistance of the glass are further improved, the impact resistance of the substrate is enhanced, and the service life of the touch screen is prolonged.

To provide composite coated soft magnetic metal powder in which the insulating property of a green compact is excellent without causing the reduction of magnetic permeability by combining a silicon oxide coating layer and a coating layer of a silicon compound containing an organic substance, and to provide a method for producing the same.SOLUTION: By forming a composite coating in which a silicon oxide coating layer having an average film thickness of 0.1 nm or more and 20 nm or less is provided as a first layer and a silicon-containing coating layer having a structure in which a linear alkyl group having 8 or more and 20 or less carbon atoms is bonded by a siloxane bond is provided as a second layer on the surfaces of soft magnetic metal particles containing 20 mass% or more of iron, it is possible to obtain a composite-coated soft magnetic metal powder having excellent insulating properties of a green compact without decreasing the permeability.SELECTED DRAWING: None

This invention belongs to the field of ablation-resistant thermal insulation composite material preparation technology, specifically relating to a polyacrylonitrile-based hollow carbon fiber for thermal protection materials and its preparation method. The invention first pre-oxidizes porous polyacrylonitrile precursor fibers to obtain porous pre-oxidized fibers. Then, phenolic resin is coated onto the surface of the pre-oxidized fibers through solution polymerization. After impregnation in an organosilicon source solution, rapid Joule heating at high temperature deposits both phenolic carbon microspheres with excellent ablation resistance and a silica coating on the fiber surface, forming a unique hollow carbon fiber structure with excellent thermal insulation properties. This solves the problem that polyacrylonitrile-based carbon fibers cannot simultaneously achieve both thermal insulation and ablation resistance. The thermal conductivity of the polyacrylonitrile-based hollow carbon fiber prepared by this method is about 17% lower than that of porous polyacrylonitrile carbon fibers prepared by traditional carbonization methods, making it applicable to the field of integrated ablation-resistant thermal protection materials.

The application discloses a processing technology of an aluminum-based multi-phase composite toughening reinforcing guide rail for a sunroof of a new energy vehicle, and comprises the following steps: S1, nano-aluminum nitride pretreatment; S2, nano-aluminum nitride surface coating; S3, preparation of a silica coating layer; S4, nano-aluminum nitride composite modification; S5, smelting of an aluminum alloy; S6, stainless steel fiber addition and casting; S7, homogenization treatment; and S8, subsequent treatment. The continuous skeleton structure formed by the stainless steel fiber can disperse local stress concentration and avoid local plastic deformation when force is applied. The nano-aluminum nitride@silica-silane particle is dispersedly distributed between the aluminum alloy matrix and the fiber gap, hinders dislocation movement through dispersion strengthening, and reduces fatigue crack initiation sites. Under the synergistic action of the two, the tensile strength and impact toughness of the material are greatly improved, and the guide rail is suitable for use of a large sunroof.

The invention relates to the technical field of electrochemical energy storage, in particular to an aqueous zinc ion battery negative electrode material with an amino group coating as well as a preparation method and application of the aqueous zinc ion battery negative electrode material. The preparation method comprises the following steps: adding aminated silicon dioxide and a binder into an agate mortar, and grinding to obtain mixed powder of the aminated silicon dioxide and the binder; and then transferring the mixed powder of the aminated silicon dioxide and the binder into a stirring container, then adding an organic solvent, stirring and mixing to obtain aminated silicon dioxide coating slurry, then coating the aminated silicon dioxide coating slurry on a zinc negative electrode in a blade coating manner, and drying to obtain the aminated silicon dioxide coating. The aqueous zinc ion battery negative electrode material with the amino group coating prepared by the invention can promote efficient transmission of zinc ions, reduce concentration polarization, guide uniform deposition of the zinc ions, avoid zinc dendritic crystal growth caused by overhigh local concentration, improve the capacity and coulombic efficiency of a total battery, and improve the service life of the battery. The commercialization of the water-based zinc ion battery is favorably realized.

The application belongs to the technical field of concrete materials, and particularly relates to asphalt concrete filler, asphalt concrete and a preparation method thereof. The asphalt concrete filler comprises the following raw materials in parts by weight: limestone powder 30-40 parts, slaked lime 5-15 parts, coated modified fly ash melting solidification body powder 40-100 parts and dispersing agent 0.1-0.3 parts. In the modification process of the fly ash melting solidification body powder, a continuous and dense nano-silica coating layer is formed on the surface of the powder particles by surface chemical modification, and the coating layer realizes long-term stability of the alkaline powder by multiple mechanisms, thereby ensuring stable bonding performance with asphalt. The application further provides asphalt concrete comprising the following raw materials: coarse aggregate, fine aggregate, asphalt concrete filler and asphalt. The asphalt concrete filler and asphalt provided by the application solve the problem of resource utilization of fly ash melting solidification body waste, and have a broad market application prospect.

The utility model relates to the related field of car clothing, in particular to a degradable environment-friendly car clothing with a biodegradable enzyme catalytic coating, which comprises a car clothing body, a nano-silver coating, the biodegradable enzyme catalytic coating, a silicon dioxide coating, an antifouling layer, silicon dioxide particles, an adhesive layer, a release film and the like. By arranging the biodegradable enzyme catalytic coating, the degradation speed of the waste car cover can be increased, the environment pollution caused by the waste car cover is reduced, the car cover is more environment-friendly, by arranging the silicon dioxide coating, the scratch resistance of the car cover is improved, the situation that the car cover is scratched due to external acting force is reduced, and the service life of the car cover is prolonged. The service life of the car cover can be prolonged, stain attachment can be effectively reduced through the arranged antifouling layer, and the attractiveness of the car cover can be improved.

The utility model discloses an anti-fog polarized lens which comprises a PVA (Polyvinyl Alcohol) polarized film, and nanoscale pits are formed on the surface of the PVA polarized film through ion beam etching; the resin base material is cured and molded on the upper surface and the lower surface of the PVA polarizing film; the hardening layer is coated on the surface of the resin base material; the high anti-reflection layer is plated on the surface of the hardening layer; the multi-layer anti-fog protection layer is arranged on the surface of the high anti-reflection layer and sequentially comprises a silane coupling agent bottom layer, a nano silicon dioxide coating, a wear-resistant layer and a hydrophobic outer layer. According to the utility model, the nanoscale pits are etched and formed on the surface of the PVA polarizing film, so that the interface bonding capacity with resin is enhanced; in addition, the multiple anti-fog protective layers depend on the silane coupling agent bottom layer to enhance the adhesive force between the coating and the resin substrate, the nano-silica coating is nano-silica suspension liquid and is matched with the hydrophobic outer layer to improve the waterproof effect of the lens, and the middle wear-resistant layer enhances the wear resistance of the nano-silica coating film layer and improves the durability.

The invention discloses a cement-based composite material with a gradient modulus transition interface layer and a preparation method of the cement-based composite material, and belongs to the field of high-performance cement-based composite materials and interface engineering. According to the material, a silicon dioxide coating and an organic monomer deposition polymerization layer are sequentially constructed on the surface of aggregate to form a composite interface layer with modulus continuous gradient change, so that smooth stress transition from high-modulus aggregate to a low-modulus cement matrix is realized. The method comprises the following steps: firstly, pretreating and activating aggregate, and then coating the surface of the aggregate with a silicon dioxide sol layer by adopting a sol-gel method; introducing a polymerizable organic monomer on the sol layer through a controllable deposition process; and finally, a modulus cascade structure of aggregate-silicon dioxide layer-organic layer-cement matrix is formed. The structure can effectively weaken interface stress singularity, inhibit microcrack initiation and improve the mechanical property of the composite material in a high ground stress environment. The method is suitable for harsh engineering environments such as tunnel linings, high dams and nuclear power facilities.

This invention discloses a high-speed dispersion device for processing nano-silica coatings, belonging to the technical field of coating processing equipment. It includes a drive mechanism; a stirring mechanism located below the drive mechanism, comprising a central stirring assembly and a bottom stirring assembly. The central stirring assembly includes an inner auger and an outer auger, with the outer auger sleeved outside the inner auger. The drive mechanism drives the inner and outer augers to reciprocate in opposite directions. The bottom stirring assembly includes multiple stirring blades, and the drive mechanism also drives the multiple stirring blades to rotate on their own axis while simultaneously performing planetary rotation. A defoaming mechanism located below the drive mechanism collects and breaks bubbles on the surface of the coating liquid. This invention, through its overall structural design, improves the coating dispersion effect while eliminating bubbles generated during the dispersion process.

This invention relates to the field of adhesive materials technology, specifically disclosing a polyvinyl chloride (PVC) foam tape and its preparation method. The raw materials for the PVC foam tape include PVC resin, environmentally friendly plasticizer, composite foaming agent, nano-reinforcing agent, low-temperature toughening agent, halogen-free flame retardant, calcium-zinc composite stabilizer, and adhesive. The nano-reinforcing agent is obtained through stearic acid activation, silica coating, and modification with KH-570 coupling agent. The composite foaming agent is prepared by microencapsulating azodicarbonamide and compounding it with 4,4'-oxobisbenzenesulfonyl hydrazine. The preparation method employs a segmented mixing process, first mixing PVC resin and additives at high temperature, then adding a heat-sensitive component after cooling, followed by twin-screw extrusion plasticization, three-stage gradient foaming, corona treatment of the surface, and finally coating with adhesive. This invention achieves low plasticizer migration, controllable cell structure, and excellent batch stability, making it suitable for applications in building sealing, automotive assembly, and electronics.

The invention discloses a fireproof flame-retardant basalt fiber pipeline for a large ship and a preparation method of the fireproof flame-retardant basalt fiber pipeline, and belongs to the technical field of composite material pipelines. A siloxane coating layer is constructed on the surface of basalt fiber through hydrolytic condensation reaction of tetraethoxysilane, so that the interfacial compatibility of the fiber and an organic matrix can be effectively improved; the surface roughness of the basalt fibers is improved, the fibers are prevented from being agglomerated in a matrix, ammonium polyphosphate is fixed through the silicon dioxide coating layer, the mechanical property and structural stability of the pipeline are improved, and the flame retardant effect is prolonged; ammonium polyphosphate is an efficient intumescent flame retardant, is combined with the basalt composite fiber in a nitrogen atmosphere, and can form a compact carbon layer when being heated to isolate oxygen and heat transfer; meanwhile, the basalt fibers have inorganic high-temperature-resistant characteristics, and the basalt fibers and the basalt fibers have a synergistic effect, so that the pipeline is endowed with excellent fireproof and flame-retardant effects, and the fireproof safety requirements of large ships are met.

The invention discloses a processing technology of an aluminum-based multiphase composite toughness reinforced guide rail for a new energy automobile skylight. The processing technology comprises the following steps: S1, pretreating nano aluminum nitride; s2, coating the surface of the nano aluminum nitride; s3, preparing a silicon dioxide coating layer; s4, nano aluminum nitride composite modification; s5, smelting an aluminum alloy; s6, stainless steel fiber adding and casting; s7, carrying out homogenization treatment; and S8, performing subsequent treatment. A continuous framework structure formed by stainless steel fibers can disperse local stress concentration and avoid local plastic deformation during stress, nano aluminum nitride at silicon dioxide-silane particles are dispersed and distributed in gaps between an aluminum alloy matrix and the fibers, dislocation movement is hindered through dispersion strengthening, fatigue crack initiation sites are reduced, and under the synergistic effect of the nano aluminum nitride at silicon dioxide-silane particles and the aluminum alloy matrix, the mechanical property of the composite material is improved. The tensile strength and the impact toughness of the material are greatly improved, so that the material is suitable for guide rails of large skylights.

The invention relates to a low-defect high-selection-ratio core-shell composite abrasive material, a preparation method and a polishing solution, and belongs to the technical field of chemical mechanical polishing of integrated circuits, the low-defect high-selection-ratio core-shell composite abrasive material comprises a multilayer structure formed by an inner core and an outer shell, and the inner core comprises alpha-phase aluminum oxide particles and gamma-phase aluminum oxide particles; the preparation method of the Al2O3-coated SiO2-Betaine comprises the following steps of: mixing an inner core, coating the outer shell with a silicon oxide coating layer, performing grafting modification on the surface of the silicon oxide coating layer through a betaine type zwitterionic compound to obtain Al2O3-coated SiO2-Betaine, performing mixing on the inner core, coating the outer shell, dispersing core-shell particles, preparing modifier hydrolysate and performing surface grafting to obtain the Al2O3-coated SiO2-Betaine, and the Al2O3-coated SiO2-Betaine can be used for preparing a polishing solution. Through the unique three-layer structure design of the hard core, the soft shell and the surface modification, high removal rate, low defect and controllable selection ratio are synchronously realized.

This invention discloses a method for preparing high-frequency, low-loss Fe-Ni-Mo permalloy powder using an atomization and heat treatment process, relating to the field of soft magnetic functional materials technology. The invention includes the following steps: first, electrolytic iron, electrolytic nickel, molybdenum plate, ferroboron, silicon, and sponge yttrium are smelted to obtain an alloy liquid; then, the alloy liquid is atomized and solidified to form powder; the resulting atomized powder is cleaned and treated in an argon atmosphere at 600-620℃ for 30-40 minutes; subsequently, it is coated with Y-Al-F-O sol, followed by silica coating; finally, it is treated in an argon atmosphere at 380℃ for 30-40 minutes, and after sieving, high-frequency, low-loss Fe-Ni-Mo permalloy powder is obtained. This preparation method effectively improves the insulation resistance, high-frequency low-loss capability, and frequency stability of the permeability of the Fe-Ni-Mo permalloy powder.

The invention discloses a SiC-coated SiO2 core-shell structure reinforced composite aerogel bridge fireproof material and a preparation method thereof.The SiC-coated SiO2 core-shell structure reinforced composite aerogel bridge fireproof material comprises a SiC-coated SiO2 unit layer and a composite layer, the SiC-coated SiO2 unit layer takes SiC aerogel nanoparticles as a core, a silicon dioxide wrapping layer grows on the surface of the SiC aerogel nanoparticles as a shell, and the composite layer is a composite layer. The composite layer comprises Al (OH) 3 gel sol and a high silica fiber felt. The invention discloses a preparation method of a SiC-coated SiO2 core-shell structure reinforced composite aerogel bridge fireproof material. The preparation method comprises the following steps: S1, preparing SiC aerogel; s2, uniformly coating the surface of the skeleton of the SiC aerogel with a silicon dioxide wrapping layer by adopting a chemical vapor deposition or controllable sol-gel method; and S3, dispersing the core-shell powder in silica sol containing an aluminum source, impregnating the high-silica fiber felt, and carrying out supercritical drying to obtain the product. According to the invention, the problems of infrared shielding and high-temperature stability are solved at the same time by constructing a special nano composite unit with a core-shell structure.

The present application belongs to the technical field of engineering cement-based composite materials, and particularly relates to a self-healing cement-based composite material and a preparation method thereof. Raw material composition of the self-healing cement-based composite material comprises Portland cement, fly ash, slag powder, water reducing agent, fiber, SAP and capsule type additive. The capsule type additive comprises an inner core and a silica coating shell layer, and the inner core comprises a silane modified ethylene-acrylic ester-GMA terpolymer and a sodium carbonate activator. The self-healing cement-based composite material of the present application can effectively limit cracking through fiber reinforcement ductility, and further realizes good synergistic self-healing performance through SAP and the capsule type additive. The self-healing cement-based composite material has the advantages of low cost, stable performance and easy industrialization.

The application relates to a synthesis method of AB co-doped manganese ion halide nanomaterials, which comprises the following steps: 1) mixing raw materials such as cesium bromide, A-site dopant raw materials and B-site dopant raw materials, carrying out surface activation treatment after mixing, and then carrying out high-energy ball milling to obtain a mixture; 2) adding the mixture into a mixed solution of a reaction solvent and a ligand, and carrying out reaction under the assistance of ultraviolet light to realize ligand passivation, so as to obtain a reaction product; 3) carrying out silica coating on the reaction product to obtain superparamagnetic particles; and 4) carrying out drying, ball milling and static electricity elimination treatment on the superparamagnetic particles to obtain AB co-doped manganese ion halide nanomaterials. The application synthesizes AB co-doped manganese ion metal halides with high purity by adopting a solid-phase method, and the luminous intensity is improved compared with common manganese ion metal halide nanomaterials.

The invention discloses a preparation method of a crucible, the crucible comprises a crucible body and a silicon oxide coating, the crucible body is a quartz piece, the silicon oxide coating is arranged on the inner wall of the crucible body, the preparation method of the crucible comprises the following steps: preparing electrophoresis slurry, the electrophoresis slurry comprises quartz powder and a solvent; performing electrophoretic deposition on a silicon oxide coating on the inner wall of the crucible body by using an electrophoresis device to form a green body; and the green body is dried and sintered, and the crucible is prepared and formed. According to the preparation method of the crucible disclosed by the embodiment of the invention, the thickness of the silicon oxide coating of the crucible prepared by the preparation method is controllable, the uniformity is relatively good, when the crucible is used as a container for purifying a silicon material, the silicon oxide coating can better prevent impurities in the crucible body from entering the silicon material, and the surface of the silicon oxide coating is relatively rough, so that the silicon oxide coating is more uniform. A coating, such as a silicon nitride coating, which is further processed on the outer side of the silicon oxide coating is not easy to fall off, so that the pan sticking rate is reduced.

The present invention provides: a silicon oxide coating film that has good oil repellency and / or good oil release even in an emulsifier-containing oil / fat composition; and a molded article. Specifically, the present invention provides a silicon oxide coating film for use in applications where the coating film comes into contact with an emulsifier-containing oil / fat composition, wherein the surface free energy (γ) of the surface of the silicon oxide coating film at 20°C is 27 mJ / m2 or less.

The invention relates to the field of pigment preparation, and discloses a super-hydrophobic high-weather-resistance bismuth vanadate pigment and a preparation method thereof. The method comprises the following steps: synthesizing a bismuth vanadate precursor through liquid phase coprecipitation; the preparation method comprises the following steps: preparing a dispersion liquid from a bismuth vanadate precursor, adding an aluminum source compound, forming an aluminum oxide coating layer outside the bismuth vanadate precursor at a set pH value and temperature, adding a silicon source compound, forming a silicon dioxide coating layer outside the aluminum oxide coating layer at a set pH value and temperature, and obtaining a gradient-coated bismuth vanadate precursor; and modifying the gradient coated bismuth vanadate precursor with fluorosilane, and carrying out high-temperature calcination to obtain the super-hydrophobic high-weather-resistance bismuth vanadate pigment. In the super-hydrophobic high-weather-resistance bismuth vanadate pigment, through deep synergy of gradient coating, high-temperature calcination and fluorosilane modification, the comprehensive efficiency of super-hydrophobicity and high weather resistance is achieved, and the bottleneck of simple process superposition is broken through.

The utility model discloses a broken bridge aluminum profile with low heat conduction. A first aluminum frame and a second aluminum frame which are distributed inside and outside form a main body frame and are connected through two heat insulation strips, and basic heat insulation separation is guaranteed. A coating frame is arranged between the heat insulation strips, and the coating frame is filled with aerogel strips with high porosity and a certain thickness, so that transverse conduction of heat is hindered. A vacuum heat insulation plate is fixed in each cavity of the aluminum frame, a heat conduction medium is greatly reduced in a vacuum environment, and heat is reflected back by the arc-shaped reflection grooves in the two sides of the plate according to the light reflection principle, so that permeation into the aluminum frame is reduced. Meanwhile, the nano silicon dioxide coatings on the two faces of the vacuum heat insulation plate can reflect part of heat, change the heat transfer path, block water vapor and guarantee the heat insulation stability. According to the broken bridge aluminum profile, through the synergistic effect of multiple innovative heat insulation structures, the heat insulation performance is remarkably improved, the structure is stable, the building energy-saving requirement can be effectively met, the broken bridge aluminum profile is particularly suitable for the field of doors and windows, and a high-quality material selection scheme is provided for building energy saving.

The application discloses a high-temperature-resistant insulating material for new energy batteries and a preparation method thereof, and relates to the technical field of high polymer materials.The method comprises the following steps: first, modifying o-cresol formaldehyde epoxy resin with DOPO, and then reacting the modified o-cresol formaldehyde epoxy resin with KH-560 to obtain an active compatibilizer and powderize the active compatibilizer; then, performing surface passivation, silica coating, calcination and titanate coupling treatment on aluminum nitride to obtain an AlN@SiO2 composite filler; then, performing surface modification on the filler by using an aminated hyperbranched polysiloxane and nano boron nitride to construct an interface buffer layer; finally, blending, extruding and heat-treating polyetherimide, the active compatibilizer, the modified filler and an antioxidant. The method is suitable for the insulating field of new energy batteries, and the high-temperature stability and long-term heat cycle performance of the material are significantly improved through multi-scale synergistic modification.

The invention discloses a device, configuration and storage method of a hydrogen standard oil sample for transformer oil chromatography verification, and relates to the technical field of electrical equipment state monitoring and fault diagnosis, the device comprises a standard oil configuration and storage unit, an outer layer protection unit, an inert gas supply and pressure compensation unit, a hydrogen concentration online monitoring unit and a control unit. The standard oil configuration and storage unit is a stainless steel tank body of which the inner wall is plated with a compact silicon oxide coating, so that hydrogen escape is effectively prevented; the outer-layer protection unit covers the inner tank and forms an inert gas interlayer, and the stable pressure difference between the outer-layer protection unit and the inner tank is maintained through dynamic pressure compensation; the hydrogen concentration monitoring probe monitors the hydrogen concentration in oil in real time, and the control unit automatically adjusts the interlayer pressure or the stirring speed according to data and actively maintains dissolution balance. Through the synergistic effect of the high-barrier material, dynamic pressure compensation and intelligent closed-loop control, the technical problems that hydrogen is easy to permeate and the concentration is easy to attenuate are solved, and the method can be used for on-site calibration of the transformer oil chromatography online monitoring device.

The invention discloses a silicon dioxide coating supported catalyst with high thermal stability and a preparation method of the silicon dioxide coating supported catalyst, belongs to the technical field of heterogeneous catalyst preparation, and particularly relates to an anti-sintering catalyst for inhibiting high-temperature sintering by constructing a porous silicon dioxide coating on the surface and a preparation method of the anti-sintering catalyst. The catalyst is mainly applied to petrochemical engineering and other catalytic reaction fields requiring high temperature or severe atmosphere. The method at least comprises the following steps: loading active metal on the surface of a catalyst carrier and reducing the active metal. Then, the silicon dioxide is placed in a mixed solution of ethyl alcohol and ammonia water, an ethyl alcohol solution of tetraethyl orthosilicate is slowly injected at a constant speed under continuous stirring, and a silicon dioxide coating reaction is carried out; and after the reaction is finished, filtering, washing and drying, and calcining and chambering in an air environment at 300-500 DEG C to obtain the catalyst. On the premise of controlling the cost, the thermal stability and the catalytic life of the catalyst under a high-temperature condition are remarkably improved, and the key problem that the catalyst is inactivated due to high-temperature sintering is solved.