67 results about "Low emissivity" patented technology

The application relates to a coated glass and a laminated glass, the coated glass comprising a first glass sheet and a low-emissivity stack arranged on at least one surface of the first glass sheet, the low-emissivity stack comprising at least one transparent conductive oxide layer and at least one visible light blocking layer, the at least one visible light blocking layer being arranged on a side of the at least one transparent conductive oxide layer away from the first glass sheet, the at least one visible light blocking layer having a total physical thickness greater than 10 nm; the first glass sheet having a visible light transmittance TL1, the coated glass having a visible light transmittance TL2, TL1 and TL2 satisfying TL2 / TL1<=0.4. The coated glass can ensure low emissivity and low visible light transmittance, realize low visible light reflectivity, and make the prepared laminated glass have neutral color and lower manufacturing cost.

A display device includes a first type heat dissipation layer having a high emissivity disposed on a lower surface of a display panel, an upper surface of an inner plate and / or a lower surface of the inner plate facing to a lower frame, and a second type heat dissipation layer having a lower emissivity disposed on the lower surface of the inner plate corresponding to a driving circuit board. The heat generated in the display panel can be efficiently dissipated to an outside and heat generated in the driving circuit board can be transferred to the display panel in a minimized form.

The utility model relates to building energy -saving technical field solves the problem that traditional hollow glass depends on air layer heat insulation, but the heat conductivity coefficient is higher, and the energy -conserving effect is limited, and low emissivity coated glass needs to cooperate inert gas filling, and the process is complex and the durability is insufficient. Specifically, a glass heat insulation assembly, including outer glass, the front of outer glass is equipped with the snap -groove, the inside of snap -groove is provided with first adhesive layer, the front of first adhesive layer is provided with heat insulation assembly, the front of heat insulation assembly is provided with second adhesive layer, heat insulation assembly includes fixedly connected in first adhesive layer target flexible heat insulation core layer, the front of flexible heat insulation core layer is fixedly connected with reflection film layer, the front of second adhesive layer is fixedly installed with toughened glass, the outer surface of second adhesive layer is fixedly connected with first elastic heat conduction adhesive tape, the edge of outer glass is fixedly connected with second elastic heat conduction adhesive tape, and second elastic heat conduction adhesive tape is used for the edge of outer glass seal.

The invention relates to the technical field of textile materials, in particular to a thermal imaging and far infrared prevention fabric and a preparation method thereof.The fabric comprises a three-layer structure, the first layer is a base material bottom layer, the second layer is a reinforcing framework layer, and the third layer is a low-emissivity surface layer; the base material bottom layer comprises modified aramid fiber, the two sides of the modified aramid fiber are coated with low-emissivity slurry, and the low-emissivity slurry comprises nickel micro powder modified resin; the reinforced skeleton layer comprises a carbon fiber yarn and pre-oxidized fiber blend, and a conductive layer is attached to the surface of the carbon fiber yarn; the low-emissivity surface layer comprises nickel micro powder modified resin and ceramic micro powder. The preparation method of the fabric comprises the following steps: modifying the aramid fibers, pretreating the carbon fibers and the pre-oxidized fibers, coating by using low-emissivity slurry, bonding, and then carrying out hot press molding. The fabric can reflect 90% of radiant heat, and the emissivity lt of the spectrum at the wave band of 8-14 microns is achieved; the cable has excellent thermal imaging and far infrared prevention functions, has a flame retardant grade V0, and is suitable for various civil scenes.

The application relates to the technical field of infrared stealth, precise thermal control and electromagnetic compatibility, and particularly discloses a film system structure with visible ultra-high reflectivity, middle-infrared and far-infrared low emissivity and microwave high permeability; the medium stack layer has high reflectivity to visible light; the metal microstructure layer has low emissivity to middle-infrared and far-infrared light and high permeability to microwaves; the film system structure has visible light reflectivity greater than 60%, middle-infrared and far-infrared light emissivity lower than 30% and microwave permeability higher than 60%. The application realizes perfect compatibility of infrared stealth and microwave absorption, keeps infrared low emissivity (epsilon < 0.1) and realizes high permeability (greater than 95%) to 1-18GHz microwave bands. The application solves the thermal failure problem of the composite stealth structure, realizes average visible light reflectivity (greater than 95%) through the medium stack layer, greatly reduces the solar heat load and improves the overall optical performance.

The application provides a substrate carrier, a conveying system, a vacuum system and a method for operating the substrate carrier, the substrate carrier comprising a bearing frame, a substrate bearing surface, a groove and a heat absorbing sheet, the substrate bearing surface is used for placing a substrate, a groove is arranged on the bottom side of each substrate bearing surface, a heat absorbing sheet is arranged on the bottom surface of the groove, the emissivity of the first surface of the heat absorbing sheet is greater than the emissivity of the second surface of the groove bottom surface and / or the heat absorbing sheet, in this case, the low emissivity surface can inhibit heat dissipation, and the high emissivity surface can allow heat to pass through efficiently, therefore the first surface of the heat absorbing sheet can reabsorb the thermal radiation of the substrate and transmit to the second surface or the groove bottom surface, and good heat dissipation effect is achieved. This technology is simple and low in cost, meanwhile, the coating speed does not need to be reduced, and the problem of temperature rise of the substrate can be effectively solved without reducing the processing efficiency.

The invention provides a visible light transparent-mid-infrared low-emissivity composite material and a preparation method thereof. The visible light transparent-mid-infrared low-emissivity composite material sequentially comprises a base layer, an anti-rust paint layer, a first transparent resin layer, a plasmon nano functional filler layer and a second transparent resin layer from inside to outside, the light transmittance of the composite material at the wave band of 400-700 nm is greater than 80%, and the infrared emissivity at the wave band of 8-14 [mu] m is less than 0.55. The light transmittance of the composite material in the wave band of 400-700 nm is larger than 80%, the infrared emissivity of the composite material in the wave band of 8-14 microns is smaller than 0.55, and high visible light transparency and low intermediate infrared emissivity of the material can be both considered; and a transparent material system can be effectively introduced on the premise that the structural stability and the process feasibility of the plasmon nano functional material are ensured, so that the synergistic compatibility between the plasmon nano functional material and the transparent material system is realized.

The invention relates to a high-thermal-conductivity high-temperature solar photothermal conversion coating and a preparation method and application thereof, and belongs to the technical field of new energy materials. According to the method, a high-thermal-conductivity Sr or Ca-doped LaCoO3 oxide material is used as a main component of the coating, and double-layer spraying preparation of a body layer and a surface layer is adopted. Compared with a traditional spinel oxide-based coating, the coating prepared through the method has the advantages that the heat conductivity is remarkably higher, meanwhile, the high light absorption rate (higher than 95%) and the low emissivity (lower than 0.65) are achieved, surface heat radiation and heat convection loss are remarkably reduced under the high-temperature working condition, and therefore the photo-thermal conversion efficiency is improved. The photo-thermal conversion efficiency of the coating is remarkably higher than that of a commercial product PyroMark2500, and the preparation method is simple, low in cost and capable of achieving large-scale production.

The invention discloses a high-temperature stable spectrum selective infrared film and a preparation method thereof, and belongs to the technical field of infrared functional materials. The thin film adopts a Fabry-Perot cavity multi-layer structure and sequentially comprises a bottom infrared reflecting layer, a top infrared reflecting layer, a top infrared reflecting layer, a bottom infrared reflecting layer and a top infrared reflecting layer from bottom to top, the intermediate dielectric resonance layer is prepared from an infrared transparent semiconductor material; the upper-layer part absorption layer is a metal thin film; the top packaging protection layer is made of an infrared transparent dielectric material; wherein the intermediate medium resonance layer is of a crystalline structure formed through thermal pretreatment, and the crystalline structure fundamentally inhibits interdiffusion of elements between film layers and structural phase change at high temperature; through the design, the thin film has low emissivity in atmospheric window wave bands of 3-5 microns and 8-14 microns, has high emissivity in a non-detection wave band of 5-8 microns, and can be used at the temperature of 600 DEG C for a long time.

The application discloses a kind of heating and heat dissipation bidirectional personal thermal management fabric and preparation method thereof, belong to thermal management fabric design technical field.The main surface of fabric is sprayed with a layer of amorphous structure photonic crystal coating, the reflectivity of fabric in visible light near infrared band and the emissivity in mid-infrared band are improved, the physical coloring of no thermal burden is realized on the surface of fabric to meet the demand of diversification and beauty of textile, the MXene nanosheet of low emissivity is sprayed on the other side of fabric, the passive radiation heating performance, photothermal conversion performance and joule heating performance of MXene are used to realize the heating thermal management of fabric, the fabric of the application realizes dynamic personal thermal management, that is, compared with the temperature of simulated human skin, the temperature can be reduced by 10.2 DEG C in summer, and the temperature can be increased by 21.4 DEG C in winter by combining the heating effect of multiple modes, to provide greater flexibility for personal thermal management under different environmental conditions.

A tungsten-doped vanadium dioxide layer radiant heat management film comprises a metal base layer; the tungsten-doped vanadium dioxide layer is arranged above the metal base layer; the first germanium layer is arranged above the tungsten-doped vanadium dioxide layer; the zinc sulfide layer is arranged above the germanium layer; the quasi-periodic structure layer is arranged above the zinc sulfide layer, and the quasi-periodic structure layer is formed by alternately stacking calcium fluoride layers and second germanium layers; through the room temperature phase change characteristic of the tungsten-doped vanadium dioxide layer, passive switching of the tungsten-doped vanadium dioxide layer radiant heat management film between relatively high emissivity cooling in the daytime and relatively low emissivity heat preservation at night is achieved. Through the room temperature phase change characteristic of W-VO2, passive switching between daytime high-emissivity cooling and night low-emissivity heat preservation is achieved, and the problems that in the prior art, a radiant heat management device is low in emissivity and cannot be manufactured on a large scale are solved.

The invention discloses a narrow-temperature-zone and high-regulation-ratio thermal control system suitable for a deep space environment. The thermal control system can automatically regulate a thermal control object to be in a comfortable temperature range of 0-40 DEG C in a deep space extreme high-low-temperature environment. A binary two-phase heat transfer device is adopted to be uniformly connected with a controlled object and a radiation heat dissipation surface, and a thermally induced variable emissivity coating is arranged on the radiation heat dissipation surface, so that a temperature self-adaptive controllable radiator is formed. When the system faces an environment with large self-heating and strong heat flow outside the space, the temperature of the system is above a high temperature point Th, the binary two-phase heat transfer device is conducted to transfer heat, and the thermally induced variable emissivity coating is at high temperature and high emissivity to efficiently transfer and dissipate the heating amount of the equipment; when the system faces an environment with small self-heating and weak heat flow outside the space, the temperature of the system is below a low-temperature point Tc, the binary two-phase heat transfer device is blocked, the thermally-induced variable emissivity coating is in a low-temperature and low-emissivity state, heat is stored in the equipment, and it is guaranteed that the lower temperature limit of the electronic equipment is maintained in a comfortable working range.

The present application relates to a kind of hot switch intelligent phase change wall, including heat transfer control board block with heat pipe as core, energy storage board block with phase change wall as core, characterized by: the indoor and outdoor sides of the hot switch intelligent phase change wall are heat transfer control board block, and gravity heat pipe is arranged in, the working medium is in the heat pipe, the inner surface of the heat transfer cavity is provided with low emissivity material, the heat transfer cavity of the heat pipe is provided with control device, control device is made of multiple groups of connecting pieces, can be switched by changing the space position state of connecting piece and heat pipe disconnect or connection state, to control the heat transfer of heat pipe start-stop and the heat transfer direction of heat pipe when working.The phase change energy storage board block is located in the middle of heat transfer control board block on the inside and outside of wall, can store / release heat using the high latent heat performance of phase change material, and the phase change wall is provided with metal fin.

The application discloses a thermal spraying flame heat recovery and recycling device based on emissivity regulation, and aims at solving the problems of serious flame heat dissipation, low energy utilization rate and insufficient melting of high melting point powder in the existing plasma thermal spraying process. The thermal spraying flame heat recovery and recycling device is provided with a heat recovery cover at the outlet end of a plasma thermal spraying device, the heat recovery cover is a high-temperature-resistant shell, the high-temperature-resistant shell is internally provided with a hollow cavity, the hollow cavity forms a vacuum heat insulation interlayer, the inner surface of the cover of the high-temperature-resistant shell is provided with a high-emissivity coating, the high-emissivity coating is a perovskite coating, a spinel coating or a pyrochlore / defect fluorite coating, the outer surface of the cover of the high-temperature-resistant shell is provided with a low-emissivity coating, and the low-emissivity coating is a metal-doped ZnO coating. The thermal spraying flame heat recovery and recycling device can not only significantly improve the energy utilization rate of the thermal spraying flame, but also improve the coating quality and service protection performance.

A glass article comprising: at least one transparent substrate comprising a first major surface and an opposing second major surface, wherein the first major surface is coated with a conductive layer, wherein the conductive layer is absent in one or more regions of the first major surface, wherein i) the one or more regions of the first major surface, and / or ii) at least a portion of a corresponding region of the opposing second major surface, are coated with a low emissivity material, and wherein the one or more regions allow electromagnetic radiation to pass through the glass article.

This invention relates to the field of coated glass technology, and discloses a temperable coated glass, its preparation method, and its applications. The temperable coated glass provided by this invention achieves the highest level of film adhesion by introducing a Zr-Si-N substrate layer and optimizing the interface design, solving the problem of easy film peeling and ensuring the product can withstand high-temperature tempering processes. A composite protective layer composed of nickel-chromium alloy and aluminum-doped zinc oxide is used to encapsulate the Ag functional layer, resulting in extremely low performance degradation after rigorous dual 85 testing, and a breakthrough improvement in weather resistance and oxidation resistance. By introducing multiple light-absorbing adjustment layers, the indoor reflectivity of the tempered glass product is successfully reduced to below 15% and the outdoor reflectivity to below 9% without significantly affecting the light transmittance, greatly reducing light pollution and visual glare. The product possesses excellent energy-saving characteristics such as low emissivity and low shading coefficient while maintaining excellent optical uniformity and color stability.

The invention discloses a preparation method of a broadleaf plant leaf imitating camouflage coating fabric. The problem of compatibility of hyper-spectrum and thermal infrared camouflage is solved through the design of a multi-layer composite structure. The fabric is composed of a base fabric layer, a high-reflection layer, a hyper-spectral camouflage layer and a low-emissivity layer, wherein the high-reflection layer compensates near-infrared band absorption and maintains vegetation spectral characteristics; the hyperspectral camouflage layer simulates a spectral curve of a broad-leaved plant leaf in a 400-2500nm wave band, the fitting degree reaches 0.95 or above, and the GJB 1411A-2015 primary standard is met; the low-emissivity layer realizes 8-14 [mu] m band thermal infrared low emissivity while visible light is highly transparent, and the temperature difference between the low-emissivity layer and plant background radiation in a daily period is less than 5 DEG C. According to the method, near-infrared absorption of the silver nanowires is counteracted through optical path cooperative regulation and control, unification of visible light-near infrared high-precision vegetation imitation and thermal infrared stable camouflage is achieved, the environmental stability is good, humidity and heat resistance, high and low temperature resistance and mold resistance are achieved, the 60-degree glossiness of visible light is smaller than or equal to 5, and the full-time camouflage requirement of a complex battlefield is met.

The application belongs to the technical field of metamaterials, and particularly relates to a stealth super surface with synergistic regulation of infrared and microwave emissivity, comprising a plurality of periodically arrayed basic units, wherein the basic unit comprises an infrared emissivity regulation layer and a microwave emissivity regulation layer which are sequentially stacked from top to bottom, and the microwave emissivity regulation layer comprises a second ITO layer, a third ITO layer and a fourth ITO layer which are sequentially stacked from top to bottom; the application can simultaneously realize low emissivity in the infrared frequency band and high emissivity in the microwave frequency band, thereby reducing the visibility of the target in the infrared thermal imager and the microwave radiometer.

Head-up display glass and a head-up display system are provided. The head-up display glass includes outer glass, inner glass, an interlayer, and a reflective coating. The interlayer is disposed between a second surface of the outer glass and a third surface of the inner glass. The reflective coating is disposed on a fourth surface of the inner glass. The reflective coating can reflect P-polarized light. The reflective coating includes at least one low-emissivity layer and at least one laminated structure that are stacked in sequence. Each laminated structure includes a high-refractive-index layer and a low-refractive-index layer that are stacked in sequence. In each laminated structure, the high-refractive-index layer is closer to the fourth surface than the low-refractive-index layer. A refractive index of the high-refractive-index layer is greater than or equal to 1.8. A refractive index of the low-refractive-index layer is less than 1.8.

A resonator device includes: a resonator element; a heat generating unit; a first package including a first base at which the resonator element and the heat generating unit are disposed, and a first lid bonded to the first base so as to accommodate the resonator element between the first lid and the first base; and a low emissivity layer that is disposed at an inner surface of the first lid and that has an emissivity lower than an emissivity of the first lid. In addition, a constituent material of the first lid is silicon, and the emissivity of the low emissivity layer at room temperature is less than 0.5.

The present application relates to a kind of preparation methods of non-iridescent structural color film with infrared anti-fake features. First, the aqueous solution of monodisperse microspheres is configured, then a small amount of MXene and carbon black material is added, and a mixed colloidal particle suspension is obtained. By using spray, spin coating or roll coating method, three-dimensional amorphous photonic crystal film is formed on the surface of the substrate by rapid evaporation of solvent. The black material absorbs light and scatters multiple times in the amorphous photonic structure, improving the color quality of the amorphous photonic crystal film and showing good non-iridescent structural color display. By using the better absorption in the solar spectrum and the extremely low emissivity in the mid-infrared band of MXene material, as well as the optical characteristic difference with carbon black and other materials, the structural color film realizes the thermal anti-fake property. After micro-heating, the hidden information can be read by an infrared camera.

The application discloses a preparation method of infrared and radar stealth fabric, comprising the following steps: S1, fabric is ultrasonically immersed, and is soaked by using an alkaline solution, is washed and dried, and a pretreated fabric is obtained; S2, wave-absorbing powder and coating glue are mixed, a thickening agent is added, and the mixture is coated on the fabric, and the fabric is dried, and a composite fabric is obtained; S3, a MAX phase material is etched, and an MXene dispersion liquid is obtained; S4, coating glue is coated on the composite fabric, the MXene dispersion liquid is coated, and the fabric is dried, and the coating is repeated 1-3 times, and an MXene / wave-absorbing powder / fabric is obtained. By using the wave-absorbing powder to form a radar stealth layer, and by coating polyurethane coating glue and then coating MXene, the stability and continuity of the MXene film are ensured, the emissivity is reduced, and infrared stealth is realized, that is, the integrity of the MXene structure is not damaged by traditional mixed coating, and by accurately controlling the amount of MXene, the infrared low emissivity and radar wave absorption performance are balanced, and high-performance infrared and radar dual-band stealth is realized.

The utility model relates to the technical field of heat preservation windows, in particular to an integrated window with a heat preservation function, which comprises a mounting outer frame, a heat preservation window frame is movably mounted on one side of the mounting outer frame through hinges, a heat preservation mechanism is mounted in the heat preservation window frame and comprises an inner frame, two strip-shaped mounting grooves are formed in the inner frame, and the two strip-shaped mounting grooves are arranged in the inner frame. First heat preservation glass and second heat preservation glass are fixedly mounted in the two strip-shaped mounting grooves correspondingly, the space between the first heat preservation glass and the strip-shaped mounting grooves and the space between the second heat preservation glass and the strip-shaped mounting grooves are coated with sealant, and a cavity between the first heat preservation glass and the second heat preservation glass is filled with inert gas. Through the material characteristics of the low-radiation first heat preservation glass and the low-radiation second heat preservation glass, the window has the performance of reflecting far infrared rays, heat flow radiation from a high-temperature field to a low-temperature field can be effectively blocked, heat energy in summer can be effectively prevented from entering a room, heat energy in winter can be effectively prevented from leaking out, and the bidirectional energy-saving effect is achieved.

The utility model discloses high-transparency light-color card green double-silver low-emissivity coated glass which comprises a glass substrate, a base dielectric layer, a base second dielectric layer, a first barrier layer, a first silver layer, a first dielectric protective layer, a middle dielectric layer, a middle third dielectric layer, a second barrier layer, a second silver layer, an upper dielectric protective layer, an upper dielectric layer and an outer protective layer are sequentially arranged on one side of the glass substrate from inside to outside; the film surface, the glass surface and the color cast are all light-color cards which are green, the color is novel, and the light-color card has the characteristics of high transmittance, low reflection and low radiation, and can be widely popularized and applied to civil buildings and commercial buildings.

The invention provides a device and method for accurately predicting the heat insulation performance of a thermal protection material in an arc wind tunnel environment, and the device comprises an arc wind tunnel and a near one-dimensional heat insulation test device. The near one-dimensional heat insulation test device comprises a water cooling tool, a test piece, a rectangular-ambulatory-plane metal back plate, efficient heat insulation aerogel, a low-emissivity film and groove type heat insulation aerogel, the surface temperature of the test piece is obtained through non-contact temperature measurement, and temperature sensors are arranged on a center ring of the rectangular-ambulatory-plane metal back plate and the center position of the efficient heat insulation aerogel. Temperature data of the center under the near one-dimensional adiabatic condition are obtained, and the equivalent thermal conductivity of the thermal protection material under the current load is obtained through back temperature data anti-identification. By applying the technical scheme, the technical problems that an existing heating mode cannot simulate a real flight environment, a test scheme leaks heat, and accurate and reliable heat insulation performance data cannot be obtained are solved.

The application provides a laminated glass and a vehicle. The laminated glass comprises a first glass sheet, a bonding layer, a second glass sheet and a low-transmittance heat insulation layer, the low-transmittance heat insulation layer comprises at least one absorption functional layer, the visible light transmittance TL1 of the laminated glass is less than or equal to 15%, the total solar energy transmittance TTS of the laminated glass is less than or equal to 20%, and the emissivity e of the laminated glass measured from the side of the low-transmittance heat insulation layer is less than or equal to 0.5. The low-transmittance heat insulation layer is arranged, the laminated glass has low visible light transmittance TL1 and low emissivity e, the deep-colored PVB film in the related art can be omitted, the laminated glass has the advantages of low cost, simple manufacturing and production and privacy protection effect, the laminated glass is used together with an infrared reflection layer, the total solar energy transmittance TTS of the laminated glass is lower, the laminated glass can more excellently block heat, the setting of a sunshade curtain in the vehicle can be omitted, and a larger internal height space of the vehicle is obtained.

The utility model relates to a toughened glass technical field, more particularly, relate to a kind of low emissivity hollow toughened glass, low emissivity hollow toughened glass includes the first toughened glass plate and the second toughened glass plate of parallel arrangement, and hollow cavity is formed therebetween and fills inert gas.Sealing assembly is arranged around hollow cavity perimeter side, and the core is frame spacer.First wing plate and second wing plate are respectively extended out in frame spacer two sides, first wing plate abuts first toughened glass plate, and second wing plate abuts second toughened glass plate.Frame spacer is close to one side of hollow cavity and sets up sealant layer, and it is set up structural adhesive layer in the side away from hollow cavity, and the design of the first wing plate and second wing plate's spring piece, can be actively adapted to glass plate thermal expansion and cold shrinkage deformation by self elastic bending, greatly reduce the risk that sealing area produces microcrack or gap due to repeated temperature change.Obvious promotion glass in complex thermal environment under long-term sealing reliability and service life.

This invention relates to the field of infrared radiation materials, specifically to a flexible infrared radiation / reflection control material and its preparation method. This invention improves the poor bonding strength between layers in existing flexible infrared radiation / reflection control materials caused by the rough surface of the flexible substrate by adding a MgF2 transition layer between a flexible rough polyimide (PI) substrate and an infrared radiation multilayer film. Furthermore, the patterned morphology of the flexible rough substrate is designed to enhance the low specular reflection effect in infrared radiation, resulting in superior overall material performance. The flexible infrared radiation / reflection control material of this invention achieves low emissivity in the mid-wave infrared detection band (3-5 μm) and the long-wave infrared detection band (8-14 μm), as well as effective radiative heat dissipation in the non-atmospheric window (5-8 μm), and exhibits superior low specular reflection characteristics. It also features a simple structure, easy manufacturing process for industrial production, and good flexibility to effectively accommodate diverse application scenarios.

The application discloses a high-temperature stable spectrum-selective infrared film and a preparation method thereof, and belongs to the technical field of infrared functional materials. The film adopts a Fabry-Perot cavity multilayer structure, and from bottom to top, the film comprises a bottom infrared reflection layer prepared from a high-infrared reflectivity metal, an intermediate medium resonance layer prepared from an infrared transparent semiconductor material, an upper partial absorption layer which is a metal film, and a top encapsulation protective layer prepared from an infrared transparent dielectric material. The intermediate medium resonance layer is a crystal structure formed through heat pretreatment, and the crystal structure fundamentally inhibits the mutual diffusion of elements between film layers and the structural phase change at high temperatures. The design makes the film have low emissivity in the 3-5 mu m and 8-14 mu m atmospheric window wave bands, high emissivity in the 5-8 mu m non-detection wave band, and can be used at a temperature of 600 DEG C for a long time.