182 results about "Low emissivity" patented technology

The invention belongs to the technical field of camouflage materials, and particularly relates to a natural vegetation imitating visible light-laser-infrared compatible camouflage film. Comprising a substrate, a thermal infrared dual-band camouflage and near infrared spectrum regulation and control layer and a visible light-laser-near infrared regulation and control layer which are arranged in sequence. The upper-layer natural vegetation imitating structure is mainly used for simulating spectral characteristics of natural vegetation, and meanwhile, the extremely low reflectivity at the position of 1.06 mu m near-infrared laser wavelength is achieved by controlling the thickness of a film layer; the thermal infrared camouflage structure in the middle realizes low emissivity of medium-wave infrared and long-wave infrared; the substrate provides a bearing function. The multilayer film not only can realize refined simulation of a reflection spectrum of natural vegetation in a visible light-near infrared wavelength range, but also has the functions of adjusting different visible light spectrum colors and resisting an infrared detector and a 1.06 [mu] m laser detector; and a visible light-laser-infrared multi-band compatible camouflage performance covering a wide wavelength range of 0.4-14 microns can be realized.

The invention relates to a Janus flexible super fabric capable of dynamically regulating and controlling infrared emissivity as well as a preparation method and application of the Janus flexible super fabric, and belongs to the technical field of high-performance fiber products. In order to solve the problem that the existing fabric capable of dynamically regulating and controlling the infrared emissivity cannot realize stepless wide-range infrared reflectivity dynamic regulation and control, the invention provides a Janus flexible super fabric capable of dynamically regulating and controlling the infrared emissivity, which has a sandwich structure, the hydrophobic nanofiber thin film layer, the low-emissivity coating and the hydrophilic nanofiber thin film layer are sequentially arranged from bottom to top. An anti-gravity unidirectional carrier transfer channel is constructed through surface binding energy difference of hydrophilic-hydrophobic Janus porous fabrics on two sides, a hydrophilic low-emissivity coating with ultralow infrared emissivity and the Janus porous fabrics form a sandwich structure, dielectric constants are adjusted through continuous and reversible change of carrier content, and accordingly, the infrared emission performance of the fabric is improved, and the infrared emission performance of the fabric is improved. Stepless regulation and control of humidity response self-adaptive ultra-wide range infrared emissivity at normal temperature are realized.

The invention provides a microwave-transmitting and infrared-compatible low-emissivity coating, and belongs to the technical field of camouflage materials. The microwave-transmitting and infrared-compatible low-emissivity coating is of a double-layer structure composed of a bottom microwave transparent layer and a surface infrared functional layer. The microwave transparent layer is made of hollow dielectric microbeads and polyvinylidene fluoride; the infrared functional layer is made of modified flaky aluminum powder, modified hexagonal boron nitride nanosheets and polyvinylidene fluoride. The microwave-transmitting compatible infrared low-emissivity coating provided by the invention has an infrared radiation inhibition effect in two atmospheric window wave bands of 3-5 microns and 8-14 microns, and has high transmissivity in an electromagnetic wave band of 2-18 GHz; the method is especially suitable for the scenes, such as stealth unmanned aerial vehicles, ship decks and 5G base station shells, where infrared characteristics need to be suppressed and microwave signal transmission needs to be kept at the same time.

The invention discloses a visible light and infrared dual-band laser multi-spectrum compatible stealth super-structure film which is of an A / B / A / C basic structure, and a dielectric layer A on the uppermost layer, a dielectric layer A on the middle layer and a metal reflecting layer C on the bottom layer are asymmetrically arranged on the two sides along a central defect film layer B. The invention further discloses a preparation method of the visible light and infrared dual-band laser multi-spectrum compatible stealth super-structure film. According to the invention, the basic structure of the thin film is designed, and the optical resonant cavity is utilized to couple metal defect intercalation and interference effect, so that the full-band selective spectrum regulation and control from the visible light nanometer wavelength to the infrared and laser micron wavelength is realized; the super-structure heterogeneous thin film has the disguise capability of visible light with wide color gamut, full color and high saturation, low emissivity of wide-range infrared band and high absorption of dual-band laser, can realize infrared high-temperature thermal disguise, and breaks through the multi-band compatible stealth performance which can be obtained by complicated and expensive technical means such as photoetching; the method has an excellent military camouflage application prospect.

The invention discloses a preparation method of an infrared and radar stealth fabric, which comprises the following steps: S1, ultrasonically impregnating a fabric, soaking with an alkaline solution, washing and drying to obtain a pretreated fabric; s2, mixing wave-absorbing powder with a coating adhesive, then adding a thickening agent, coating a fabric with the mixture, and drying the fabric to obtain a compound fabric; s3, the MAX phase material is etched, and an MXene dispersion liquid is obtained; and S4, coating the composite fabric with the coating adhesive, coating the composite fabric with the MXene dispersion liquid, drying the composite fabric, and repeatedly coating the composite fabric for 1-3 times to obtain the MXene / wave-absorbing powder / fabric. The radar stealth layer is formed by utilizing the wave-absorbing powder, meanwhile, MXene is coated after the polyurethane coating adhesive is coated, it is ensured that the MXene forms a stable and continuous film, the emissivity is reduced to achieve infrared stealth, it is avoided that the integrity of the MXene structure is damaged by traditional mixed coating, the infrared low emissivity and the radar wave absorbing performance are balanced by accurately controlling the using amount of the MXene, and the infrared stealth effect is improved. And high-performance infrared and radar dual-band stealth is realized.

The invention provides an infrared shielding flexible composite phase change film and a preparation method thereof. The composite phase change film is a flexible composite film material synthesized by taking a cellulose acetate porous film as a framework and a phase change material as a core material and doping a high-reflectivity nanoparticle material. The preparation method of the composite phase change membrane comprises the following steps: forming pores by a phase inversion method, carrying out gravity settling to obtain a cellulose acetate porous membrane with low emissivity, and dipping to obtain the flexible composite phase change membrane. The prepared flexible composite phase change film is a bendable film with certain mechanical strength, the system has the infrared emissivity reducing performance and the temperature control performance, and the composite phase change material under the dual-mode function can efficiently achieve the infrared shielding effect.

The embodiment of the invention provides a sunshade curtain and a preparation method thereof and a vehicle, the sunshade curtain comprises a base cloth layer, a first functional layer and a second functional layer, the first functional layer and the second functional layer are located on the front face and the back face of the base cloth layer respectively, and the first functional layer comprises an optical enhancement layer, a weather-proof hot melting layer and an antifouling layer which are stacked in sequence; the second functional layer comprises 30 wt%-40 wt% of second film-forming resin, 30 wt%-60 wt% of second heat reflection filler, 0.5 wt%-1 wt% of a second dispersing agent, 0-5 wt% of color paste and 30 wt%-60 wt% of a second solvent. Through the second functional layer, the optical enhancement layer, the weather-proof hot melting layer and the antifouling layer which are stacked, the sunlight reflectivity can be improved, the temperature in the vehicle is reduced, the riding comfort is improved, and the service life of the vehicle is prolonged. And the second functional layer is in the parameter range of the scheme, so that the emissivity can be reduced, heat can be controlled to be radiated to the glass side, the head burning feeling of a driver and passengers is reduced, and the comfort in the vehicle is further improved.

The invention provides coated glass and vehicle window glass. The coated glass comprises a substrate and a low-permeability heat insulation layer arranged on at least one surface of the substrate, the low-permeability heat insulation layer comprises at least two dielectric layers and at least two absorption function layers which are arranged in a stacked mode, and each absorption function layer is located between the two adjacent dielectric layers; the visible light transmittance of the coated glass is less than or equal to 15%. By arranging the low-transmittance heat insulation layer, the coated glass has lower visible light transmittance TL and lower radiance e, and can replace a dark PVB (Polyvinyl Butyral) membrane in related technologies, so that the coated glass has the effects of low cost, simplicity in manufacturing and production and privacy protection. Moreover, the coated glass can be independently used as the vehicle window glass and can also be made into the vehicle window glass, heat can be blocked, a sunshade curtain in a vehicle is omitted, and therefore a larger height space in the vehicle is obtained, and the use experience of a user is improved.

The invention relates to a preparation method of a flexible film for dynamically adjusting infrared emissivity, and belongs to the technical field of dynamic adjustment of infrared radiation characteristics. The preparation method comprises the following operation steps: (1) uniformly mixing the basic component A and the reaction component B at room temperature; (2) defoaming the mixed solution, and pouring the mixed solution on a flat plate for self-leveling; (3) curing to obtain a polymer film; (4) stretching and fixing the polymer film, and sequentially plating an adhesion layer film and a functional layer film on the surface of the polymer film by using an electron beam evaporation coating technology; the functional layer film is made of a low-emissivity material; and (5) reducing the strain spontaneous release polymer film to an initial length to obtain the variable-emissivity flexible film with a wrinkle structure on the surface. The size and morphology change of the wrinkle structure changes the propagation path of the electromagnetic wave, and changes the area ratio of the high-emissivity material to the low-emissivity material, thereby changing the surface emissivity of the material. The infrared radiation temperature adjustment amplitude of the flexible film is 40 DEG C, and the flexible film has a good dynamic infrared camouflage function.

The invention discloses an electrochromic intelligent window with a precise mode regulation and control function and a preparation method and application of the electrochromic intelligent window, and belongs to the technical field of intelligent buildings. In order to solve the problems that an existing electrochromic intelligent window is insufficient in energy-saving effect, poor in warm mode regulation and control performance and the like, the electrochromic intelligent window is made of a lithium / viologen-based electrolyte and tungsten oxide (WO3) bi-component electrochromic material, zoning regulation of visible light (380-780 nm) and near-infrared light (780-2500 nm) is independently achieved through voltage regulation and control, and the three modes of brightness, warm and darkness are achieved. In a warm mode, the visible light transmittance (TVIS < = 10%) is extremely low, the near-infrared light transmittance modulation range (delta TNIR < = 10%) is small, and excellent privacy protection and heat preservation performance is provided; and in the dark mode, visible light (TVIS < = 5%) is synchronously reduced, near-infrared light (DeltaTNIR > = 30%) is significantly modulated, and the energy-saving effect is significantly improved. Besides, high-emissivity and low-emissivity materials are designed on the outer layer of the device, and long-wave infrared light (2.5-25 microns) radiation is regulated and controlled in combination with mechanical overturning, so that the energy efficiency performance of the intelligent window in cooling in summer and heat preservation in winter is further enhanced.

The invention relates to a thin film antenna and solar wing integrated structure. A thermal control coating is adopted on the outer surface of a thin film antenna layer to realize temperature control on the outer side of an antenna; heat flow diffusion and temperature self-adjustment of a high heating device in the antenna are realized by adopting the high-heat-conductivity flexible patch and the energy storage patch; the mutual heat radiation influence between the thin film antenna layer and the solar cell layer is reduced by adopting a plurality of thermal control heat insulation layers; and the temperature influence of the solar cell layer on the structural frame and the thin film antenna layer is further reduced through the low-emissivity thin film layer and the heat insulation connecting device. Under different sun irradiation conditions, the film antenna ensures that internal devices work in a preset temperature range; the problems of local heating and heat dissipation of high-heating devices in dot matrix distribution in the thin film antenna are solved. When the solar cell layer works, the thermal radiation influence on the thin film antenna caused by temperature rise is reduced, and finally the thermal compatibility design of the thin film antenna and the solar wing is achieved.

The invention belongs to the technical field of functional coatings and composite materials thereof, and particularly relates to a low-infrared-emissivity coating based on aluminum powder pretreatment and a preparation method of the low-infrared-emissivity coating. Nanometer CeO2 with a porous structure and Al powder are calcined to form an interface heterojunction under the combined action of nanoparticles and nanowires, and then the interface heterojunction is used as a filler to be prepared into a low-infrared-emissivity coating with fluorocarbon resin and an auxiliary agent; after pretreatment, the aluminum powder with the interface heterojunction structure can greatly promote electron migration, so that the conductivity is improved by 2 orders of magnitude compared with that of a traditional metal oxide; and according to the Hagen-Rubens law, the conductivity is in negative correlation with the emissivity, so that the emissivity is reduced. The infrared emissivity of the final coating at the wave band of 8-14 microns is as low as 0.16, the coating has high stability, light weight, high temperature resistance and environmental erosion resistance, the preparation process is simple, the coating is suitable for the fields of aerospace thermal management, military stealth and industrial energy saving, and an innovation direction is provided for the next generation of infrared stealth coatings.

The invention discloses high-performance ultralow-emissivity neutral color coated glass and a preparation process thereof.The high-performance ultralow-emissivity neutral color coated glass comprises a coated glass body, the coated glass body comprises a glass part, a first film coating part and a second film coating part, the top end of the glass part is fixedly connected with the bottom end of the first film coating part, and the bottom end of the glass part is fixedly connected with the top end of the second film coating part; by arranging the first film coating piece and the second film coating piece, the first film coating piece and the second film coating piece are laid on the two sides of the glass piece, compared with common single-piece transparent glass, ultraviolet ray transmission is reduced, meanwhile, light pollution is avoided, the visible light transmittance is high, and indoor lighting and privacy of owners are guaranteed to a greater extent; by arranging the first film coating piece and the second film coating piece, the ultra-low emissivity coating and the color plating coating are mutually combined, the phenomenon that the coatings fall off or are damaged due to hard object scratching or chemical substance erosion is avoided, and the using effect and the service life of the glass are guaranteed.

The invention discloses an energy-saving dimming assembly and a manufacturing method, and relates to the technical field of building energy-saving facilities, and the energy-saving dimming assembly is sequentially provided with a first transparent layer, a second transparent layer, a third transparent layer and a fourth transparent layer from outside to inside, the temperature response functional layer comprises a mixture of at least two thermochromic high polymer materials and is configured to realize adjustment of light transmittance in a preset temperature interval; the second transparent layer is used for supporting the temperature response functional layer; and an optical regulation and control layer configured to have a low-radiation characteristic in a long-wave infrared region. According to the invention, the transmittance of visible light and infrared light of the window can be changed along with the change of temperature at 20-38 DEG C. Meanwhile, programmed adjustment of the corresponding temperature response interval can be achieved through temperature change; and the gradual change of the transmittance of visible light and infrared light can be regulated and controlled in a programmed manner through the temperature change, so that the effects of regulating the indoor brightness and temperature and protecting the visual comfort of a user are realized, and the aim of saving energy is fulfilled.

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.

The invention discloses a self-adaptive thermal management device of a shape memory Janus array structure, a preparation method of the self-adaptive thermal management device and application of the self-adaptive thermal management device in a deep space probe, and belongs to the technical field of self-adaptive thermal management. The problem that the heat dissipating capacity of a traditional radiation radiator with the single heat radiation characteristic cannot be adjusted is solved. The temperature response shape memory Janus array is adopted as a driver of the self-adaptive thermal management device, and switching of different thermal management modes under the condition of no external energy consumption is achieved. When the temperature is lower than the phase change temperature, the shape memory Janus array is in a pressed-down state, the low-emissivity coating coated on one side of the comb teeth is exposed, and the heat loss of infrared radiation is effectively inhibited by utilizing lower infrared emissivity. When the temperature is higher than the phase change temperature, the shape memory Janus array is in an inclined state, and the high-emissivity coating coated on the other side of the comb teeth is exposed, so that energy increase caused by solar radiation is prevented, and effective heat release is promoted.

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 invention provides laminated glass and a vehicle. The laminated glass comprises a first glass plate, a bonding layer, a second glass plate and a low-transmittance heat insulation layer, the low-transmittance heat insulation layer comprises at least one absorption function layer, the visible light transmittance TL1 of the laminated glass is smaller than or equal to 15%, the total solar transmittance TTS of the laminated glass is smaller than or equal to 20%, and the radiance e of the laminated glass measured from one side of the low-transmittance heat insulation layer is smaller than or equal to 0.5. According to the laminated glass, the low-transmittance heat insulation layer is arranged, so that the laminated glass has lower visible light transmittance TL1 and lower radiance e, and a deep colored PVB (Polyvinyl Butyral) membrane in the related technology can be omitted, so that the laminated glass has the effects of low cost, simplicity in manufacturing and production and privacy protection; according to the laminated glass provided by the utility model, the laminated glass is matched with the infrared reflecting layer for use, so that the laminated glass has lower total solar transmittance TTS, the laminated glass can better block heat, the arrangement of a sunshade curtain in a vehicle is omitted, and a larger height space in the vehicle is obtained.

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 invention provides a middle-infrared-band low-infrared-emissivity material and a preparation method thereof. The middle-infrared-band low-infrared-emissivity material comprises a low-emissivity composite layer, an anti-rust paint layer and a base layer which are sequentially connected. The low-emissivity composite layer is one of a first low-emissivity layer, a second low-emissivity layer and a second low-emissivity layer; the raw material of the first low-emissivity layer is one or more of polyurethane resin, fluorocarbon resin and epoxy resin; the raw material of the second low-emissivity layer is one of a conductive film and compound slurry; the conductive thin film is one or more of antimony-doped tin oxide, fluorine-doped tin oxide, indium tin oxide, aluminum-doped zinc oxide and a silver nanowire transparent thin film. The polyurethane resin provided by the invention can reduce the introduction of oxygen-containing functional groups, so that the polyurethane resin has lower emissivity and good light transmittance in the wave band of 8-14 microns, and the low emissivity of the material can be controlled by regulating and controlling the thickness of the polyurethane resin layer.

The tunable infrared selective thermal emitter based on a cylindrical structure array belongs to the field of micro-nano optoelectronic technology; it is composed of multiple tunable structural units arranged periodically. Sunlight is incident in the form of a plane wave. Each tunable structural unit includes a substrate layer, a buffer layer, and an antenna from bottom to top. The substrate layer and the buffer layer are square in shape, and the antenna is a three-layer cylindrical structure. The structure of the present invention is simple. In the atmospheric windows of 3-5μm and 8-14μm, the average emissivities are about 0.20 and 0.18 respectively, and the average emissivity in the non-atmospheric window of 5-8μm is about 0.80. Moreover, it is not affected by the polarization of the light source and has good emission effects within the incident angle range of 0°-60°. The addition of GST enables the thermal emitter to not only meet the requirements of low emissivity in the atmospheric window and radiative heat dissipation in the non-atmospheric window, but also tune the infrared emissivity spectrum to achieve switching between the infrared "stealth" and "non-stealth" states.

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 relates to a low-layer-number one-dimensional infrared low-emissivity film system structure insensitive to polarization and an incident angle. According to the technical scheme, the low-layer one-dimensional infrared low-emissivity film system structure is formed by compounding a one-dimensional lambda / 4 periodic photonic crystal structure and a quasi-periodic photonic crystal structure, and the tail layer of the one-dimensional lambda / 4 periodic photonic crystal structure is connected with the top layer of the quasi-periodic photonic crystal structure. The structure of the low-layer-number one-dimensional infrared low-emissivity film system is expressed by the following formula: (AB) 2 (CD) 5, wherein (AB) 2 represents a one-dimensional lambda / 4 periodic photonic crystal structure, and (AB) represents a sub-periodic photonic crystal structure formed by sequentially arranging Ge and ZnO; (CD) 5 represents a quasi-periodic photonic crystal structure, and (CD) represents a sub-quasi-periodic photonic crystal structure formed by sequentially arranging Ge and ZnO. The dual-band low-emission antenna has the advantages of being small in layer number, short in production period, high in reliability, capable of achieving dual-band low emission and insensitive to polarization and incidence angles.

The invention discloses a crystal-amorphous composite Zr-Si-O barrier layer material and a preparation method and application thereof, and belongs to the technical field of functional coating materials. The material of the crystal-amorphous composite Zr-Si-O barrier layer comprises zirconium oxide crystal grains and amorphous SiO2, and the amorphous SiO2 covers the surfaces of the zirconium oxide crystal grains to form a coating layer. The crystal-amorphous composite Zr-Si-O barrier layer material can make up for the defects of phase change, cracking, poor surface compactness and the like of the existing barrier layer material at high temperature, and has high-temperature stability and low emissivity performance at the same time. The crystal-amorphous composite Zr-Si-O barrier layer material provided by the invention adopts an electron beam evaporation process, and has the advantages of high oxide deposition rate, uniform prepared surface layer, high compactness, low process temperature, simple method, short period, low cost and the like.

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 present invention provides a low-emissivity film, a coated laminated glass and a coated hollow glass, wherein the low-emissivity film comprises a first composite layer, a second composite layer, a third composite layer, a fourth composite layer, and an outermost protective layer; the first composite layer, the second composite layer, the third composite layer, and the fourth composite layer respectively comprise a dielectric layer, a functional layer, and a transition layer; the first dielectric layer is configured to block diffusion of destructive atoms into the first functional layer during heat treatment, and the second dielectric layer, the third dielectric layer, and the fourth dielectric layer are configured to increase an optical path of visible light; the first functional layer and the fourth functional layer are made of a silver-indium alloy material, and the second functional layer and the third functional layer are made of a silver material; the transition layer is made of a mixture material of a zinc- aluminum alloy and a zinc-tin alloy; the outermost protective layer comprises a third sub-layer prepared according to a single-rotating magnetron sputtering cathode equipped with a Hipims power supply, which can improve the surface mechanical properties and thermal stability of the film layers.