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Thermochromic intelligent dual-band infrared stealth film
ActiveCN222618815URealize the heat dissipation functionhigh emissivityVacuum evaporation coatingSputtering coatingTarget surfaceEmissivity
The utility model relates to a thermochromic intelligent dual-band infrared stealth film, and belongs to the technical field of infrared stealth films. In order to solve the problems that an existing infrared stealth material is complex in preparation process, high in cost and narrow in application range, the utility model provides a thermochromic intelligent dual-band infrared stealth film which sequentially comprises a ZnS material layer, a VO2 material layer, a Si material layer and an Ag substrate layer from top to bottom. The infrared stealth film disclosed by the utility model has the characteristic that the infrared emissivity is reduced along with the temperature rise, the emissivity of the film can be adaptively and reversibly adjusted according to the environment temperature change, the infrared stealth film has a stealth function of double infrared bands of 3-5 microns and 8-14 microns, and meanwhile, the infrared stealth film has relatively high emissivity in a non-infrared detection band of 5-8 microns, so that the infrared stealth effect is greatly improved. And the heat dissipation function of the stealth target in the wave band can be realized. The infrared stealth film disclosed by the utility model has the characteristics of simple structure and convenient preparation method, can cover the surface of a target in a large area, and is beneficial to large-scale popularization.
Owner:ORDOS INST OF APPLIED TECH
Method for in-situ growth of large-thickness high temperature resistance / heat insulation / radiation heat dissipation integrated thermal protection coating with multistage gradient hole structure on thin-wall metal surface
ActiveCN119411198AImprove insulation performancelow thermal conductivityAnodisationElectrolytic agentPore distribution
The invention discloses a method for in-situ growth of a large-thickness high temperature resistance / heat insulation / radiation heat dissipation integrated thermal protection coating with a multistage gradient hole structure on the surface of thin-wall metal, and relates to the technical field of thermal protection coatings. The invention aims to solve the problems of how to finely regulate and control the pore size, pore content and pore distribution in the coating and how to improve the heat insulation performance and radiation heat dissipation performance of the coating. According to the method, electric parameters are regulated and controlled on the thin-wall metal surface in an electrolyte system in a multi-step grading mode, and in-situ preparation of the large-thickness high-temperature-resistant / heat-insulation / radiation heat dissipation integrated thermal protection coating with the multi-stage gradient hole structure is achieved. According to the invention, the multi-stage gradient pore structure coating is innovatively constructed by adopting multi-step hierarchical electrical parameters, so that the internal pore characteristics of the coating can be effectively controlled, the integrated improvement of heat insulation, radiation heat dissipation and high temperature resistance can be realized, and a new way is opened up for the in-situ preparation of a large-thickness and high-performance thermal protection coating.
Owner:HARBIN INST OF TECH
Heat-proof and heat-insulation paint, coating and preparation method thereof
ActiveCN119505698Asimple compositionlow thermal conductivityPolyurea/polyurethane coatingsPolyester coatingsCoatingCeramic materials
The invention discloses a heat-proof and heat-insulating coating, a coating and a preparation method thereof, and relates to the field of heat-proof and heat-insulating coatings. The self-made functional modified light heat-insulating filler, the ceramic forming filler and the photosensitive modified matrix film forming matter are mixed and cured to obtain the heat-proof and heat-insulating coating. A coating layer obtained from the prepared coating is based on the functional modified light heat insulation filler, large-size coating forming and uniform forming can be achieved on the basis that the excellent three-dimensional structure and performance are kept, high-strength combination with a base material is achieved, and the temperature resistance and heat insulation performance of the material are improved.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
Magnetic infrared radiation heat dissipation MnSe2 material, infrared radiation composite film and preparation method of magnetic infrared radiation heat dissipation MnSe2 material
PendingCN119490164AHigh infrared emissivityhigh emissivityCoatingsMetal selenides/telluridesMiddle infraredEmissivity
The invention discloses a magnetic infrared radiation heat dissipation material MnSe2, and a preparation method of the magnetic infrared radiation heat dissipation material MnSe2 comprises the following steps: 1) uniformly mixing manganese powder and selenium powder in proportion, and tabletting the obtained mixed powder to obtain a primary block 2) melting and quenching the obtained primary block under a vacuum condition; 3) grinding the quenched casting body, and tabletting to obtain a secondary block body; and 4) carrying out step-by-step melting annealing on the obtained secondary block under a vacuum condition, and then grinding to obtain the magnetic infrared radiation heat dissipation material MnSe2. Manganese powder and selenium powder are used as main raw materials, the melting quenching process and the step-by-step melting annealing process are combined, the infrared emissivity of the obtained MnSe2 material is promoted to be improved, and particularly, the high emissivity can be shown in the middle infrared band and the far infrared band; when the material is applied to preparation of a MnSe2 composite film, a good radiation refrigeration effect can be achieved, and the material has a good application prospect in the fields of thermal management of microelectronic devices and the like.
Owner:WUHAN UNIV OF TECH +1
SiO2 (at) ZnO white dustproof coating prepared based on step-by-step sol-gel method and preparation method of SiO2 (at) ZnO white dustproof coating
PendingCN119592110Ahigh emissivityImprove mechanical propertiesPretreated surfacesCoatingsAlloy substrateSlurry
The invention discloses a SiO2-coated ZnO white dustproof coating prepared based on a step-by-step sol-gel method and a preparation method of the SiO2-coated ZnO white dustproof coating, and belongs to the field of spatial special functional materials. According to the invention, stable performance of the thermal control coating under lunar dust pollution is realized. The preparation method comprises the following steps: introducing SiO2 particles on the surface of zinc oxide through a sol-gel method to construct a micro-level rough surface structure, adding a low-surface-energy modifier into a mixed solution of zinc oxide and silica sol, uniformly mixing, and drying to obtain multi-scale hydrophobic SiO2 (at) ZnO particles. The preparation method comprises the following steps: putting a SiO2 coated ZnO powder material into silica sol prepared in advance, adding a surfactant, uniformly mixing to prepare white slurry, finally covering the slurry on an alloy substrate through a blade coating technology, and curing to form the SiO2 coated ZnO white dustproof coating. The method is applied to the field of deep space exploration and has a very wide application prospect.
Owner:HARBIN INST OF TECH +1
Lamp surface composite coating and preparation method thereof as well as LED module and preparation method thereof
The invention provides a lamp surface composite coating and a preparation method thereof as well as an LED module and a preparation method thereof. The lamp surface composite coating comprises a coating mixture and a volatile solvent, the coating mixture comprises an ink mixture and modified inorganic matte powder in a mass ratio of (9-12): (0.5-1.2); wherein the ink mixture is prepared from the following components in parts by mass: 50 to 60 parts of epoxy resin, 25 to 35 parts of filler, 15 to 20 parts of organic solvent, 1 to 5 parts of flatting agent and 1 to 5 parts of dispersing agent; the filler comprises at least one of nano carbon spheres and modified nano carbon spheres; the modified inorganic matt powder comprises inorganic matt powder and a surface treating agent, wherein the inorganic matt powder comprises at least one of gas-phase SiO2, micronized wax, silica powder and talcum powder. The lamp surface composite coating disclosed by the invention can have good heat dissipation performance, and when the lamp surface composite coating is applied to an LED module, the heat dissipation performance and the optical performance in an LED display screen and the adhesive force between lamp beads and a lamp panel can be improved at the same time, so that the display effect of an LED is improved.
Owner:SHENZHEN ABSEN OPTOELECTRONIC CO LTD +1
Orange red inorganic pigment with near-infrared high reflection and infrared selective radiation characteristics as well as preparation method and application of orange red inorganic pigment
ActiveCN119529559Agood optical performanceImprove coloring performancePigmenting treatmentManganese compoundsEmissivityPhotopigment
The invention discloses an orange red inorganic pigment with near-infrared high reflection and infrared selective radiation characteristics, which is characterized in that the orange red inorganic pigment contains Li, Mn and Re elements, and the Re element is any one of Ti, Zr or Hf. According to the invention, the use of toxic heavy metals is avoided, the environmental protection is realized, the unification of high reflectivity, high emissivity and ideal color is realized through the synergistic effect of Li, Mn and Re elements, and compared with the traditional single-component pigment, the combination has more excellent optical performance.
Owner:NANJING TECH UNIV
Green low-cost high-performance radiation heat dissipation coating and preparation method thereof
PendingCN119592118Alow priceeasy to makeChemical industryReflecting/signal paintsMiddle infraredCellulose
The invention provides a radiation heat dissipation coating and a preparation method thereof. Preferably, the coating comprises the following components: methyl cellulose with a strong radiation characteristic in a wave band of 8-14 microns and diatomite with a strong reflection characteristic in a wave band of 0.25-2.5 microns and a strong emission characteristic in a wave band of 8-14 microns. The reflectivity of the coating in the visible near-infrared band (0.25-2.5 microns) reaches 92% or above, and the emissivity of the coating in the middle-infrared band (8-14 microns) can reach 0.88 or above. The radiation heat dissipation coating disclosed by the invention is excellent in performance, simple in preparation process and low in cost, deionized water can be independently selected as a solvent, preparation of a non-toxic and environment-friendly coating is completely realized, the coating can be coated on different substrate surfaces such as wood boards, cement wall surfaces, metal, glass, ceramics and plastics, and green and energy-consumption-free heat dissipation is realized.
Owner:SHENZHEN RES INST OF SHANGHAI JIAOTONG UNIV +2
High-weather-resistance transparent coating for radiation cooling and preparation method of high-weather-resistance transparent coating
PendingCN119592144AImprove transmittanceImprove cooling effectRadiation-absorbing paintsIndiumMicrosphere
The invention discloses a high-weather-resistance transparent coating for radiation cooling and a preparation method of the high-weather-resistance transparent coating, and relates to the technical field of radiation cooling. The invention relates to a fluorine-carbon resin coating which comprises the following components in parts by weight: 10-20 parts of FEVE fluorocarbon resin, 10-50 parts of an organic solvent, 0-10 parts of silicon dioxide (SiO2) microspheres, 0.1-1 part of indium tin oxide (ITO) particles and 1-2 parts of a curing agent. According to the invention, the SiO2 microspheres are added into the FEVE fluorocarbon resin, so that the coating has high emissivity while maintaining high weather resistance, and plays a role in cooling. Meanwhile, the ITO particles are added into the coating, so that the coating keeps transparency and selectively shields near-infrared light, the heat of the sun penetrating through the glass is greatly reduced, and the cooling effect is improved. Compared with a conventional transparent radiation cooling material, the transparent radiation cooling material is simple in preparation process, low in cost and excellent in weather resistance and cooling effect, and has a good market application prospect.
Owner:TIANJIN UNIV
A water-based nano-dispersion of far-infrared negative oxygen ion material
ActiveCN120682661Bpromote decompositionhigh emissivityAntifouling/underwater paintsPaints with biocidesSpectral emissionEmissivity
This solution relates to the coatings field and proposes an aqueous nano-dispersion of far-infrared negative oxygen ion material. By weight, it comprises: 300-350 parts water; 35-45 parts wetting agent; 40-60 parts dispersant; 25-35 parts defoamer; 35-45 parts multifunctional additive; 5-7 parts thickener; 400-600 parts activated far-infrared negative oxygen ion material; 1-3 parts accelerator; and 3-5 parts shielding agent. This solution designs a multi-component synergistically promoting activated far-infrared negative oxygen ion material, which can improve the hemispherical spectral emissivity in the 4-14μm band, even reaching above 0.95 in the key 8-12μm band, effectively promoting formaldehyde decomposition with a long-lasting effect, while also improving antibacterial properties.
Owner:QUZHOU TRUMPQI NEW MATERIALS TECHNOLOGY CO LTD
Perovskite quantum dot / polymer dispersed liquid crystal film and preparation method thereof
PendingCN121779751Agood fluorescence propertiesImprove stabilityMaterial nanotechnologyLiquid crystal compositionsCrystallographyQuantum dot
The invention relates to the technical field of polymer dispersed liquid crystal, and discloses a perovskite quantum dot / polymer dispersed liquid crystal film and a preparation method thereof, and the method comprises the following steps: preparing a toluene solution of perovskite quantum dots, and adding dithiol as a ligand to carry out surface modification on the perovskite quantum dots to obtain a perovskite quantum dot / polymer dispersed liquid crystal film; cleaning by using a mixed solvent of toluene and ethyl acetate in a volume ratio of 1: 2-2: 1, and centrifuging to obtain surface-modified perovskite quantum dots; uniformly mixing the surface-modified perovskite quantum dots with an ultraviolet polymerizable monomer, a cross-linking agent, liquid crystal and an ultraviolet initiator, injecting the mixture into a liquid crystal box, and performing ultraviolet curing to obtain the perovskite quantum dot / polymer dispersed liquid crystal film. The perovskite quantum dot / polymer dispersed liquid crystal film with enhanced long-wave infrared emissivity, fluorescent pattern and information encryption, provided by the invention, has wide application prospects in liquid crystal display, intelligent glass, energy-saving building materials, automobile decoration and related fields.
Owner:UNIV OF SCI & TECH BEIJING
Formula of high-emissivity resistance heating biological wave emitting chip and manufacturing method of high-emissivity resistance heating biological wave emitting chip
PendingCN119280683AEasy to process and producehigh strengthElectrotherapyOhmic-resistance heating detailsThermal dilatationProtection layer
The invention discloses a formula and a manufacturing method of a high-emissivity resistance heating biological wave emitting chip, the high-emissivity resistance heating biological wave emitting chip comprises a supporting plate, a first emitting layer is fixedly compounded on the surface of one side of the supporting plate, and a second emitting layer is fixedly compounded on the surface of one side of the first emitting layer. Aluminum strip layers are fixedly connected to the outer side faces of the first emission layer and the second emission layer, a colloid protection layer is fixedly compounded on the surface of one side of the second emission layer, the colloid protection layer is fixedly connected to the outer surface of the aluminum strip layer, a positioning groove is formed in the surface of the other side of the supporting plate, a through hole is formed in the positioning groove, and a through hole is formed in the through hole. The through holes are aligned to the surface of the back of the first emission layer, a heating plate is fixedly connected to the interior of the positioning groove, the high-strength, high-heat-conductivity, high-vacuum adaptability, high elastic modulus, low thermal expansion coefficient, excellent thermal shock resistance, corrosion resistance and oxidation resistance and the like are achieved, the high emissivity is achieved, and machining and using are facilitated.
Owner:苏州交鑫智能科技有限公司
Large dynamic range, large aperture and high precision on-board blackbody radiation source and temperature control method thereof
PendingCN122084124AImprove temperature uniformityImprove temperature stabilityRadiation pyrometryTemperature controlBlack-body radiation
This application relates to the field of infrared remote sensing instrument calibration technology, and provides a high-dynamic-range, large-aperture, high-precision on-board blackbody radiation source and its temperature control method. The main body of this on-board blackbody radiation source is temperature-controlled by a refrigerator, exhibiting a large dynamic range, capable of temperature control from 200K to 310K. Through a three-layer structure consisting of the radiation source cavity, a cooling inner shell, and an outer shell, zoned temperature control via a heat transfer bracket, and a three-layer thermal insulation installation design, the temperature uniformity and stability of the blackbody radiation source are significantly improved, with temperature uniformity exceeding 30mK. Simultaneously, it possesses high emissivity (spectral emissivity reaching 0.998) and an aperture as large as 310mm, meeting the requirements for large field-of-view, long-distance use.
Owner:SHANGHAI INSTITUTE OF TECHNICAL PHYSICS CHINESE ACADEMY OF SCIENCES
A blue light-emitting composition and an organic electroluminescent device and a display device containing the same
The present invention discloses a blue light-emitting composition and an organic electroluminescent device and a display device containing the same. The blue light-emitting composition includes a compound with a general structural formula as shown in Formula I, and a compound with a general structural formula as shown in Formula II. The present invention introduces a fluorene or heterofluorene fragment, especially a dibenzofuran fragment, into both the host and guest materials, which can improve the electron transport properties of the host and guest materials, and the fragment on the guest material has a cycloalkyl structure, which increases the distance between the host and the guest, thereby reducing concentration quenching, and the cycloalkyl structure increases the steric hindrance during the aggregation process of the host and guest materials in the film, which is beneficial to limit the free rotation of the single bonds connecting the fragments on the host and guest materials to a certain extent, which is beneficial to reduce the non-radiative transition of solid molecules in the film, increase the radiation probability of the composite exciton, and can significantly improve the performance of the organic electroluminescent device in terms of driving voltage, external quantum efficiency and life. I, II
Owner:SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
A surface-source blackbody structure with a multi-level composite cone structure and its preparation method
This invention discloses a surface-source blackbody structure with a multi-level composite cone structure and its fabrication method, belonging to the field of microstructure optical design and fabrication technology. This invention forms a multi-level composite absorbing unit by setting a periodically arranged first-level main cone structure on a basic support structure, and further constructing a second-level secondary cone structure array with gradient characteristics on its top platform. This not only increases the optical path and multiple internal reflections, but also matches different wavelengths through gradient dimensions. Since the secondary cone array contains multiple scales, energy is absorbed step by step during the transmission process from the outside to the inside; simultaneously, it can achieve efficient absorption over a wide wavelength range and large angles, thus structurally realizing a near-ideal planar blackbody target surface, which is beneficial for promoting its integrated application in infrared calibration, thermal imaging system calibration, and space remote sensing.
Owner:JILIN UNIVERSITY
Water-based radiation refrigeration coating composition and preparation process thereof
PendingCN121779980Ahigh emissivityHigh solar reflectivityPolyurea/polyurethane coatingsReflecting/signal paintsWeather resistanceFirming agent
The invention relates to the technical field of water-based radiation refrigeration coatings, and discloses a water-based radiation refrigeration coating composition and a preparation process thereof, the water-based radiation refrigeration coating composition comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 10 to 15 parts of a water-based substrate, 8 to 12 parts of a multi-effect cosolvent, 55 to 65 parts of radiation refrigeration functional filler, 10 to 20 parts of emulsion, 0.1 to 0.8 part of a hydrophobic auxiliary agent, 0.1 to 0.8 part of a wetting agent and 0.3 to 1 part of a thickening agent, and the multi-effect cosolvent is prepared from a dispersing agent, a defoaming agent and a first solvent; and the component B comprises the following raw materials in parts by weight: 65-75 parts of a curing agent and 25-35 parts of a second solvent. The water-based radiation refrigeration coating composition has good cooling performance, weather resistance and protection performance.
Owner:ZHEJIANG HUADIAN EQUIP TESTING INST +1
Mechanically reversible dual-mode glass for energy conservation
PendingCN122071897AFlexible adjustment functionHigh emissivityLight protection screensWing arrangementsDual modeTransmittance
A dual mode glass for a window includes a glass substrate having a first side and a second side, a first member disposed on the first side of the glass substrate, and a second member disposed on the second side of the glass substrate. Wherein the first component and the second component are configured to enable the dual-mode glass to present a first transmissivity / emissivity mode for light rays incident on the first side and to present a second transmissivity / emissivity mode for light rays incident on the second side. The dual-mode glass is extremely suitable for different weather conditions due to different spectral characteristics on the two sides so as to maintain indoor comfort.
Owner:CITY UNIVERSITY OF HONG KONG
Preparation method and application of white stable lignin
A method for preparing white stable lignin and its application are disclosed. This invention addresses the limitations of existing lignin decolorization processes, which are constrained by long decolorization times and difficulty in maintaining color stability under ultraviolet light stimulation after decolorization, thus failing to meet the low absorption requirements of radiative cooling materials in the visible light band. The method includes: 1. Preparation of DES; 2. Preparation of lignin solution; 3. Modification of lignin; 4. Bleaching; 5. Preparation of white stable lignin. Application: It is used in the preparation of refrigeration materials.
Owner:NORTHEAST FORESTRY UNIV
A small surface blackbody radiation source with a wide temperature range
ActiveCN115014540Bhigh emissivityImprove temperature uniformityPyrometry using electric radation detectorsBlack-body radiationInsulation layer
The present invention discloses a small-sized surface source blackbody radiation source with a wide temperature range, including an outer shell, an inner shell, a radiation outlet, a heat preservation layer, a heating body, a heating rod, a temperature detector, a heat dissipation device, a set screw, a connecting screw, and a lead connector; the heating rod and the temperature detector are buried in the heating body, the heating body is made of high temperature resistant material, and the radiation surface is a radiation surface made by a special process; a heat preservation layer is installed between the heating body and the inner shell; the outer shell and the inner shell are suspended in the air, and the four edges of the inner shell rectangular body are connected and fixed to the outer shell by insulating high temperature resistant connectors, so that the radiation surface of the heating body is separated from the outer shell surface by a certain distance; the heat dissipation device is installed at the position opposite to the outer shell and the radiation surface. The various parts and installation connection methods of the present invention can be used in conjunction with a temperature controller to realize a miniaturized surface source blackbody radiation source with the advantages of wide temperature radiation, rapid temperature rise and fall, and high emissivity.
Owner:西安应用光学研究所
A thermal radiation enhancing coating and its application, and a radiation heat exchange device using the coating
ActiveCN112126285Bhigh yieldhigh emissivityChemical industryStationary conduit assembliesEmissivityAdhesive
The present invention relates to an enhanced thermal radiation coating and its application, and a radiation heat exchange device using the coating. The enhanced thermal radiation coating comprises a reinforcing material component, a black material component, and an adhesive; the reinforcing material component is silicon and / or boron. The enhanced thermal radiation coating can be coated on the surface of a metal material and used as an enhanced thermal radiation coating. A radiation heat exchange device comprises a first metal radiation plate, a heat exchange core plate composed of a second metal radiation plate and a heat transfer channel; the heat exchange core plate is parallel to the first metal radiation plate and has a minimum spacing of 1-3mm; the surfaces of the heat exchange core plate and the first metal radiation plate are both provided with an enhanced thermal radiation coating. The coating of the present invention can form a coating on the surface of a metal material, which can greatly improve the absorptivity and emissivity of the surface of the metal material; the radiation heat exchange device can be used for cooling and / or heating, can cool in a relatively humid and hot environment without condensation, and has a high cooling capacity.
Owner:严继光
Method for improving binding force of inorganic thermal control coating on surface of carbon / carbon composite material
The invention provides a method for improving the binding force of an inorganic thermal control coating on the surface of a carbon / carbon composite material, which comprises the following steps: placing the carbon / carbon composite material in absolute ethyl alcohol, and carrying out ultrasonic cleaning and drying to finish ultrasonic cleaning; laser is adopted to continuously scan the surface of the carbon / carbon composite material, and laser cleaning is completed; spraying a surface treating agent on the surface of the carbon / carbon composite material subjected to laser cleaning; and spraying the inorganic thermal control coating on the surface of the carbon / carbon composite material sprayed with the surface treating agent, drying in the shade, curing, and forming the inorganic thermal control coating on the surface of the carbon / carbon composite material. According to the method, the binding force of the inorganic thermal control coating on the surface of the carbon / carbon composite material is improved through ultrasonic cleaning, laser cleaning and the bridging effect of the surface treating agent.
Owner:BEIJING SATELLITE MFG FACTORY
Perovskite material with microwave absorption and radiation heat dissipation functions and preparation method and application thereof
PendingCN121757928AEnhanced dielectric loss capabilityinhibitory structureOther chemical processesHeat-exchange elementsSpectral emissionElectromagnetic shielding
The invention belongs to the field of wave-absorbing materials and electromagnetic protection materials, and particularly relates to a perovskite material with microwave absorption and radiation heat dissipation functions and a preparation method and application thereof. The perovskite material provided by the invention has a chemical formula shown as the following: Sr < x > Co < y > M < z > On, m is one or more of La, Ce, Sm, Gd, Er and Lu; 0.2 < = x < = 1.2; 0.2 < = y < = 1.0; z is 0 < = z < = 0.2; 1 < = n < = 3. The perovskite material disclosed by the invention has an adjustable strong absorption characteristic in a microwave frequency band of 1-18GHz, the spectral emissivity of the perovskite material in an infrared band of 1.5-25mu m at room temperature is greater than 90%, the perovskite material shows the characteristics of high infrared emissivity and low microwave reflection loss, and the perovskite material can still keep stable performance at high temperature; the material has wide application prospects in thermal management and electromagnetic protection materials of mobile communication base stations and wave-absorbing materials of aerospace crafts.
Owner:NANKAI UNIV
High-emissivity negative ion-modified graphene heating carbon slurry and preparation method thereof
The invention discloses a high-emissivity negative ion-modified graphene heating carbon slurry and a preparation method thereof. The raw materials are composed of the following components by weight: 15% to 35% of a binder, 15% to 35% of a conductive filler, 3% to 5% of a far-infrared emitting material, 2% to 3% of an auxiliary agent, and the balance is a solvent. The conductive filler is composed of graphene powder, conductive graphite, conductive carbon black, carbon nanotubes, and silver nanomaterials; the far-infrared emitting material is composed of tourmaline, bamboo charcoal powder, and infrared emitting powder. The invention has a simple production process, high far-infrared emissivity, and good stability of the heating carbon slurry. The product can be widely used in the fields of floor heating, wall heating, heaters, physical therapy products, etc.
Owner:ZHEJIANG XIWEI NANO TECH CO LTD
Infrared stealth and radiation heat dissipation film based on Ge2Sb2Te5 and preparation method thereof
ActiveCN115747740Blow emissivityhigh emissivityVacuum evaporation coatingSputtering coatingFilm basePhysical chemistry
The present invention belongs to the technical field of material preparation, and specifically relates to an infrared stealth and radiation heat dissipation film based on Ge2Sb2Te5 and a preparation method thereof. The infrared stealth and radiation regulation selective emission film materials of the present invention are Ni and Ge2Sb2Te5, and the substrate is a high-purity silicon wafer. The selective emission film comprises a four-layer structure of Ni / crystalline Ge2Sb2Te5 / Ni / amorphous Ge2Sb2Te5, and the middle layer of crystalline Ge2Sb2Te5 is obtained by annealing after deposition. The structure can simultaneously achieve low emission in the "atmospheric window" interval of 3‑5 and 8‑13 μm, and high emission at 5‑8 μm outside the window, while achieving the dual functional effects of stealth and heat dissipation.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
A method for preparing a double-layer dynamic thermal management material
The application discloses a preparation method of a double-layer dynamic thermal management material, and comprises the following steps: step 1, preparing a radiation cooling layer: dissolving cellulose acetate in an organic solvent, uniformly dispersing nano-hexagonal boron nitride to form a mixed solution, coating the mixed solution on a substrate, and then treating the mixed solution by a non-solvent induced phase separation method to form a radiation cooling layer with a porous structure; step 2, preparing a phase change heat storage layer: immersing delignified wood in a mixed solution containing a silane coupling agent and a phase change material, and then performing vacuum treatment and drying to form the phase change heat storage layer; and step 3, compounding the radiation cooling layer and the phase change heat storage layer to form the double-layer dynamic thermal management material. The double-layer dynamic thermal management material prepared by the method realizes efficient heat radiation and dynamic temperature regulation through the synergistic effect of the radiation cooling layer and the phase change heat storage layer.
Owner:ZHEJIANG FORESTRY UNIVERSITY
Thermochromic multi-band compatible infrared stealth film and preparation method and application thereof
ActiveCN118064859BRealize the heat dissipation functionhigh emissivityVacuum evaporation coatingSputtering coatingTarget surfaceEmissivity
The present application relates to a kind of thermochromic multiband compatible infrared stealth film and its preparation method and application, belong to infrared stealth film technical field.To solve the problems of existing infrared stealth material preparation process complex, high cost, narrow application, the present application provides a kind of thermochromic multiband compatible infrared stealth film, from top to bottom in turn for ZnS material layer, VO2 Material layer, Si material layer and Ag substrate layer.The infrared stealth film of the present application has the characteristics that infrared emissivity decreases with temperature rise, can be reversibly adjusted according to the change of ambient temperature Film emissivity, with 3~5 μm and 8~14 μm dual infrared band stealth function, in non-infrared detection band 5~8 μm band has higher emissivity, can realize the heat dissipation function of stealth target in this band.The infrared stealth film of the present application has the characteristics of simple structure and convenient preparation method, and the film can be large-area covered on target surface, which is conducive to large-scale promotion.
Owner:ORDOS INST OF APPLIED TECH +1
Ag-NiCr alloy high-transmittance temperable low-emissivity coated glass
ActiveCN119638212AImprove lighting effectssmall color differenceClimate change adaptationWindows/door improvementNicr alloyProtection layer
The invention relates to Ag-NiCr alloy high-transmittance temperable low-emissivity coated glass, and belongs to the field of coated glass. A film layer of the coated glass sequentially comprises a first silicon nitride dielectric layer, a second seed protection layer, a third nickel-chromium absorption layer, a fourth Ag-NiCr alloy functional layer, a fifth nickel-chromium absorption layer, a sixth seed protection layer and a seventh silicon nitride dielectric layer from a glass substrate to the outside. According to the coated glass, a nickel-chromium material is added into a silver layer for segmentation, and atoms in the silver layer and a nickel-chromium segmentation layer are mutually permeated and diffused through heat treatment under specific conditions and are fully fused to form an Ag-NiCr alloy material layer of which the grain diameter is remarkably reduced; therefore, the hardness, the wear resistance, the corrosion resistance and the high-temperature resistance of the functional layer are improved, and the processing resistance of the film layer is remarkably improved; the coated glass has the advantages of simple structure, high visible light transmittance, low indoor reflectivity and small color difference before and after tempering, and is suitable for large-scale popularization and application.
Owner:SICHUAN NANBO ENERGY SAVING GLASS CO LTD +1
A black radiation-cooling thin film and its preparation method
PendingCN122085431AHigh average absorption rateImprove absorption rateMirrorsOptical filtersRefractive indexThin membrane
This invention discloses a black radiation-cooling thin film and its preparation method. The thin film comprises, from bottom to top, a substrate Sub, a black reflective module, and a radiation module. The structure of the black reflective module, from bottom to top, is MD1AD2, where M is a metal layer, D1 is a first dielectric layer, A is a visible light absorption layer, and D2 is a second dielectric layer. The structure of the radiation module, from bottom to top, is (A'1A'2A'3). s L, where A'1, A'2, and A'3 are the first, second, and third absorption layers, respectively, which have absorption in the 8μm-13μm band and high transmission in the 0.3μm-2.5μm band; L is a low refractive index protective layer; and s is the number of stacked periods, s≥1. This invention achieves good cooling performance while maintaining a black color.
Owner:XIAMEN UNIV
An organic white coating material with ultraviolet radiation resistance and low solar spectrum absorptivity and a preparation method thereof
The present invention discloses an organic white coating material with ultraviolet radiation resistance and low solar spectrum absorption rate and a preparation method thereof, which belongs to the field of spacecraft thermal control materials. The present invention aims to solve the problem of poor performance stability of existing thermal control coatings under ultraviolet radiation. The method of the present invention is to use ALD technology to modify the surface of ZnO powder to prepare Y2O3@ZnO, CeO2@ZnO, La2O3@ZnO powder materials, and then mix the rare earth oxide modified powder material (Y2O3@ZnO, CeO2@ZnO or La2O3@ZnO powder material) with an organic binder to form a white slurry, and finally spray the white slurry on an alloy substrate by spraying technology, and after drying, the white coating is obtained. The white coating of the present invention has a low solar absorption ratio and a high emissivity, and has stable structural performance and excellent mechanical properties under extreme conditions (pressure, temperature, and radiation). It is suitable for the actual mission environment of spacecraft and can be used in deep space exploration and other fields.
Owner:HARBIN INST OF TECH +1
Notebook computer shell with good heat dissipation performance
ActiveCN222482644UImprove cooling effectfast heat exchangeDigital data processing detailsComputers technologyMechanical engineering
Owner:HAOKAI ELECTRONIC TECH (JIANGSU) CO LTD