21results about How to "Low emissivity" patented technology

The invention discloses light gray low-emissivity coated glass for near-zero energy consumption buildings and a preparation method thereof, the light gray low-emissivity coated glass comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on the common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light gray in the sun and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.

The invention relates to the technical field of high-temperature infrared stealth resin-based composite materials, and particularly discloses a resin-based heat-proof composite material coated with a low-temperature curing high-temperature infrared stealth coating on the surface, which sequentially comprises a resin-based heat-proof composite material and a high-temperature infrared stealth coating from inside to outside, according to the high-temperature infrared stealth coating, nano metal and flaky metal powder serve as low-emissivity filler, and a glass phase and organic resin serve as binding phases. The preparation method of the composite material has the characteristics of low cost and low energy consumption, and the damage to the resin-based heat-proof composite material is reduced. The high-temperature infrared stealth coating on the surface of the composite material has the characteristics of wide temperature range, low emissivity and high combination, so that falling and stripping of the high-temperature infrared stealth coating caused by decomposition of the composite material in a use environment are avoided, and the stealth problem of an aircraft in a wide temperature range is solved.

The present disclosure provides a coated glass and a laminated glass. The coated glass includes a first glass substrate, a low-emissivity layer, a metal absorption layer and an anti-reflection layer; the low-emissivity layer is deposited on one surface of the first glass substrate and comprises at least one transparent conductive oxide layer; the metal absorption layer is deposited on the low-emissivity layer; and the anti-reflection layer is deposited on the metal absorption layer. The present disclosure provides a low-emissivity glass, with a simple production process, a low emissivity, a low visible light reflectivity and a neutral color, which can be used in the fields of building and vehicle glass. The low- glass having the coated glass and the laminated glass of the present disclosure, which emissivity value and the visible light reflectivity are reduced, and the inner surface of the laminated glass with the low-emissivity layer has a beautiful color.

The present invention relates to a wearable visible and infrared dual-band stealth material and a preparation method thereof, which specifically comprises the following steps: using a double-pass porous material as a substrate, evaporating gold particles on the substrate material by electron beam evaporation to form a composite device of the substrate material and gold; placing the formed composite device in a reaction liquid to react, dissolving the substrate material in the reaction liquid, leaving a gold structure; depositing a high-temperature resistant metal oxide on one side where a gold column is set, and the deposition thickness is nanometer-scale. The obtained stealth material has dual stealth characteristics of visible and infrared through the localized plasmon effect between the gold particles, and at the same time, because of its large number of pores, it provides comfortable wearing characteristics.

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.

The present invention relates to a transparent conductive oxide with an embedded film. A substrate is coated with an underlayer having a first underlayer film made of a first high refractive index material. A transparent conductive oxide layer is over at least a portion of the underlayer. An embedded film is embedded in the transparent conductive oxide layer, wherein the embedded film comprises a second high refractive index material.

This application provides a delivery pump, a fluid delivery device, and a nuclide synthesis system, belonging to the field of fluid delivery technology. It includes: a pump body, a liquid guide pipe, a diverter pipe, a regulating mechanism, and a flushing mechanism. The liquid guide pipe is connected to the pump body and is connected to a three-way valve. The diverter pipe includes a first pipe body, a control valve, and a second pipe body. The first pipe body is connected to the inlet of the control valve, and the outlet of the control valve is connected to the second pipe body. A filter screen is installed inside the first pipe body. The first pipe body has a first branch pipe and a second branch pipe. The first branch pipe is located on the side of the filter screen closer to the control valve, and the second branch pipe is located on the side of the filter screen farther from the control valve. There are two diverter pipes, each connected to one outlet of the three-way valve via the inlet end of the first pipe body. This effectively reduces the probability of particulate impurities entering the delivered liquid and maintains stable particulate impurity filtration for a long time without the need for manual cleaning.

The invention relates to a preparation method and application of a microwave absorption and low infrared emission multifunctional flexible device, in particular to a preparation method and application of a microwave absorption and low infrared emission multifunctional flexible device. The method comprises the following steps: 1, preparing carbonized melamine foam; 2, preparing a FeCo PBA precursor; 3, preparing FeCo PBA powder with a magnetoelectric double-loss hollow structure; 4, preparing a product I; and 5, preparing the multifunctional flexible FeCo PBA-MF device with microwave absorption and low infrared emission, the multifunctional flexible FeCo PBA-MF device has the characteristics of lightness, thinness, softness, good wave absorption performance, low infrared emissivity and the like, when the thickness of the FeCo PBA-MF device is 2.0 mm and the frequency is 10.77 GHz, the minimum reflection loss reaches-70.37 dB, the maximum effective wave absorption bandwidth reaches 4.21 GHz, the FeCo PBA-MF device shows excellent wave absorption performance, and in the aspect of infrared performance, the microwave absorption and low infrared emission functions of the FeCo PBA-MF device are greatly improved. And the minimum emissivity of the wave band of 8-12 microns is 0.5.

The invention discloses a non-Van der Waals artificial solid material as well as a preparation method, a thin film, a dispersion liquid and application of the non-Van der Waals artificial solid material. According to the preparation method, effective stabilization and structural transformation of a conventional MXene material are realized through a two-step method of first zinc vapor electron injection stabilization and then metal vapor bonding transformation, irreversible transformation of MXene to a rock salt structure at a high temperature can be prevented, the MXene can react with various active metal vapor, and the performance of the MXene material is improved. The invention provides a general way for controllably synthesizing a series of ultrathin non-Van der Waals artificial solid materials, solves the problem that the conventional MXene is unstable at high temperature, can be used for preparing a series of ultrathin layered materials including Al-Ti3C2 and large-area flexible films thereof, and the obtained material has high conductivity, mechanical flexibility and high-temperature oxidation resistance, and has a wide application prospect. The method has a wide application prospect in the fields of flexible electronics, high-temperature electromagnetic shielding and infrared stealth.

The invention relates to heat-retaining rolling equipment. The heat-retaining rolling equipment according to an embodiment of the present invention comprises a heat-retaining cover which covers the outside of a material to be transferred along a transfer line to retain heat, wherein the heat-retaining cover comprises: an upper cover part which covers the upper side of the material; a first and a second side cover part which cover the lateral sides of the material and are rotatably connected to both sides of the upper cover part, respectively; and at least one driving part for rotating the first or the second side cover part to control unfolding of the first or the second side cover part.

The present invention relates to the field of conversion technology, and specifically to an equipment and method for preparing combustible gas from domestic waste. The equipment comprises a shell, a V-shaped baffle is installed inside the shell, two crankshafts are symmetrically rotated and connected inside the shell, the upper surfaces of the two inclined surfaces of the V-shaped baffle are both in contact with shovel plates, fixed plates are installed in the middle of the upper ends of the two shovel plates, the two fixed plates are movably installed on the outer ends of the curved parts on the two crankshafts, the front end surfaces of the two shovel plates are both recessed backwards to form a first through groove, two auxiliary shafts are symmetrically arranged inside the shell, a first linkage part is installed at the left end of the shell, and the upper part of the first linkage part is connected to the auxiliary part, and the left ends of the two crankshafts are connected to the lower part of the first linkage part. This design realizes a flipping up and down tossing motion of granular domestic waste, improves the uniform heating effect of the granular domestic waste, effectively reduces the preparation time of combustible gas, and effectively ensures the rapid preparation of combustible gas.

The utility model discloses a glass film with low hemispherical radiance and glass, the film comprises a release film layer (00), a pressure-sensitive adhesive layer (10), a resin film layer (20) and a magnetic control metal layer, the magnetic control metal layer is located on the upper surface of the resin film layer (20), and the magnetic control metal layer is of a multi-layer structure and comprises 1-4 metal reflecting layers (30) and an outermost low-radiation anti-oxidation layer (40). The low-radiation anti-oxidation layer (40) can protect the surface of the glass film from being scratched in the transportation and construction process, meanwhile, the low-radiation anti-oxidation layer (40) has the low radiation rate, and when the indoor temperature is high, radiation is mainly transmitted from the interior of a room, and the low-radiation anti-oxidation layer (40) can reflect heat back to the interior of the room.

The invention provides a heat radiator based on a miniature parabolic mirror array and a preparation method of the heat radiator. The heat radiator based on the miniature parabolic reflector array comprises a miniature parabolic reflector array part and a multilayer film absorption part which are arranged up and down, the miniature parabolic reflector array part comprises a plurality of parabolic reflectors arranged in an array, the lower end of each parabolic reflector is provided with a focal plane opening at the focal plane position, and the multilayer film absorption part is arranged on the lower end of each parabolic reflector. The multi-layer film absorption part comprises a wavelength selective absorption multi-layer film, and the upper surface of the wavelength selective absorption multi-layer film is attached to the edges of all focal plane openings. According to the invention, the directivity of emitted light is regulated and controlled, and polarization insensitive heat radiation is concentrated in the small-angle direction of vertical emission, so that small-angle broadband high emissivity matched with a thermophotovoltaic cell is realized, and low emissivity is realized at other angles; meanwhile, the TPV system is not sensitive to light polarization, the angle selection efficiency of the system is improved, and the energy conversion efficiency of the TPV system is effectively improved.

The utility model relates to three-silver and silver-free hollow glass, and belongs to the technical field of functional glass. Comprising three-silver coated glass on the outer layer and silver-free coated glass on the inner side, and a warm edge spacing bar is arranged between the three-silver coated glass and the silver-free coated glass. Wherein the three-silver coated glass is provided with a film layer structure with three silver layers, and the silver-free coated glass is provided with a film layer structure without a silver layer. According to the utility model, the three-silver coated glass and the silver-free coated glass are combined, so that the overall heat insulation effect is achieved, and the cost of profiles and other materials is greatly reduced. The glass has good light transmission and sunshade effect, and has good heat insulation and heat preservation effect.

The application belongs to the technical field of infrared camouflage materials, and particularly relates to a kind of imitated vegetation PAAS / PVA composite camouflage material based on transpiration and a preparation method thereof. The camouflage material is composed of a high-hygroscopic composite base material, a colorant, a metal pigment and a "bridging" material. The high-hygroscopic composite base material is composed of a hygroscopic inorganic substance and a hygroscopic polyacrylic acid sodium (PAAS) and polyvinyl alcohol (PVA) composite. The "bridging" material is a medium that plays a bridging role between colorants, between a colorant and a metal pigment, and between metal pigments. The composite camouflage material has low emissivity in the mid-infrared band, is highly regenerative and reversible, can be recycled and reused, has low preparation cost, high practicality and other characteristics, and can be used in the field of infrared camouflage for reducing the detectability of weapons and equipment.

The utility model discloses yellow-green double-tone light blue 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 functional silver layer, a first dielectric protective layer, a middle dielectric layer, a middle third dielectric layer, a second functional silver layer, a second barrier layer, an upper dielectric layer, an upper second dielectric layer and an outer protective layer are sequentially arranged on one side of the glass substrate from inside to outside; the color cast of the glass surface of the product is light blue, and the film surface is slightly yellow-green, so that a dark-tone glass product is brought to the market, and a building main body is relatively stable and elegant; and the LED lamp has low radiance, is very practical in performance and appearance, and can be popularized to civil buildings.

The invention relates to an infrared stealth material based on thermal insulation and low emissivity collaborative strategy regulation and a preparation method thereof. The infrared stealth material based on heat insulation and low emissivity synergistic strategy regulation and control comprises a polyimide PI aerogel fiber braided fabric, a styrene-acrylic emulsion SA or polyvinyl alcohol transition layer attached to the surface of the polyimide PI aerogel fiber braided fabric, and a Ti < 3 > C < 2 > T < x > MXene / tannic acid TM composite low infrared emission layer attached to the surface of the transition layer.

The invention provides a wave-absorbing metamaterial with an infrared / radar compatible function, and relates to the technical field of wave-absorbing materials, and the wave-absorbing metamaterial comprises an infrared reflection layer, a first bearing layer, a broadband impedance matching layer, a wave-absorbing layer and a second bearing layer which are sequentially arranged from top to bottom; the infrared reflecting layer is used for reflecting infrared radiation to realize low infrared emissivity; the first bearing layer is used for bearing the infrared reflecting layer; the broadband impedance matching layer is used for improving the broadband impedance matching performance of a radar band; the wave absorbing layer is used for absorbing electromagnetic energy of a radar wave band; the second bearing layer is used for bearing the wave absorbing layer. The wave-absorbing metamaterial with the infrared / radar compatible function provided by the invention has both infrared low emission performance and radar broadband absorption performance.

The utility model relates to the technical field of stealth bionics, and discloses a stealth cloak which adopts a one-piece pullover type design and a pullover head opening cylinder design. And snap fasteners and air holes are arranged on the side edges. The invisible cloak comprises a cloak body, a hidden pocket, a cap and a storage bag. The invisible cloak is formed by cutting and sewing infrared invisible fabric; the infrared stealth fabric is made of photonic crystal coating base cloth; the cloak body and the cap are of an integrated structure. The inner layer of the photonic crystal coating base cloth is coated to form a waterproof layer; a flame-retardant layer is also arranged between the base cloth and the waterproof layer; a plurality of groups of three-dimensional bionic layers are sewn on the outer surfaces of the cloak body and the cap, and the three-dimensional bionic layers are made of the same material as the cloak body and the cap. The multifunctional invisible clothes have visible light and infrared stealth, waterproof and flame-retardant functions, and also have the advantages of being convenient to put on, take off, store and carry.

The application discloses a kind of low infrared emission composite coating and its preparation method and application.The composite coating includes functional filler and matrix, functional filler is the inorganic particle of refractive index not less than 2.0 in 8-14 μm wave band, and the inorganic material of matrix is the infrared transmittance not less than 80% and the refractive index lower than functional filler in 8-14 μm wave band.The optical property difference of filler and matrix is used to construct scattering environment in 8-14 μm wave band, and the infrared emissivity of coating surface is reduced.The experimental results show that, with ZnSe as representative filler, KBr as representative matrix, the emissivity of ZnSe-KBr (20vol%) coating can be as low as 0.430, which is significantly better than that of organic matrix coating (0.668).Filler can be prepared into spherical or flaky morphology by hydrothermal method, and the optical properties can be further optimized by annealing.The coating is formed by hot pressing.The disclosed technical solution is not limited to a specific material combination, and any filler-matrix combination that meets the optical conditions can achieve low emission effect.

This invention discloses a mid-to-far-infrared narrowband light source for MEMS, comprising a substrate, a suspension support layer, a heating resistor layer, and a radiation functional layer. The substrate is a silicon substrate. The suspension support layer is fixed to the substrate by anchor points. The heating resistor layer is disposed on the suspension support layer, and the radiation functional layer is disposed above the heating resistor layer. The suspension support layer and the heating resistor layer have Y-shaped grooves forming a Y-beam suspension structure. The Y-beam suspension structure is connected to the substrate by anchor points to form thermal isolation. The surface of the radiation functional layer has a periodically arranged array of micro / nano structures. The period and size of the micro / nano structure array are on the same order of magnitude as the target infrared wavelength, forming an artificial interface with specific equivalent refractive index and resonance characteristics to achieve narrowband spectral output. This invention can reduce heat conduction from the radiation region to the substrate, reduce heat conduction loss, reduce heat leakage, improve thermal isolation performance, and reduce heat capacity, thereby enabling the beam to heat up and cool down rapidly.