18 results about "Low emittance" patented technology

The invention discloses a functional fabric capable of synchronously achieving electric heating and infrared stealth and a preparation method and application thereof.The fabric is of a sandwich structure, the outer layer is an infrared stealth layer, cellulose is used for modifying the fabric, the porosity is reduced, the capillary action is improved, a low-emissivity material and the fabric are tightly combined, the surface is smooth, the problem that inorganic materials fall off is solved, and the fabric has the function of infrared stealth. The infrared stealth effect is enhanced; the interlayer is a heat insulation layer, the aerogel is subjected to silanization modification, rigid chain segments are introduced to form a rigid-flexible physical cross-linked network, the hydrogen bond strength and mechanical performance are improved, heat loss of the inner layer is slowed down, collaborative stealth is achieved, and infrared stealth of the thin aerogel under heating is achieved; the inner layer is an electric heating layer, PEDOT: PSS and CF are compounded, and the pi-pi conjugation action of the PEDOT: PSS and the CF changes the arrangement of macromolecular chains, reduces the contact resistance of the CF, improves the conductivity of the PEDOT: PSS and enhances the electric heating performance.

The invention discloses an infrared invisible clothes design method based on region segmentation and patch size, which comprises the following steps: carrying out region segmentation processing on infrared invisible clothes, and dividing the infrared invisible clothes into a plurality of camouflage splicing units; aiming at different sweating areas of the human body, the camouflage splicing units respectively adopt low-emissivity fabric, medium-emissivity fabric and high-emissivity fabric, the low-emissivity fabric is applied to the areas where the human body sweats much, the medium-emissivity fabric is applied to the areas where the human body sweats moderately, and the high-emissivity fabric is applied to the areas where the human body sweats moderately, and the high-emissivity fabric is applied to the areas where the human body sweats moderately; and designing patch sizes of the low-emissivity fabric, the medium-emissivity fabric and the high-emissivity fabric. Therefore, by applying the image segmentation technology and the patch size design, the problem of region segmentation and background fusion of the infrared invisible clothes under different distances is solved, and the infrared camouflage effect is improved.

The present disclosure relates to a composition for providing a camouflage coating, the composition including an aqueous polyolefin binder dispersion; a low-emissive pigment; and a matting agent. The matting agent is a thermoplastic polymer matting agent. The disclosure further relates to a method of producing a low-emissive textile product using such a composition, as well as low-emissive textile products and camouflage products produced using the composition.

The invention provides a method of making an article including steps of providing a solvent on a major surface of a glass sheet and positioning a face of an aerogel sheet onto the major surface of the glass sheet to create a glass-aerogel article, such that the solvent on the major surface of the glass sheet facilitates adhesion of the aerogel sheet to the glass sheet. In some cases, the glass sheet can also have a coated surface comprising a low-emissivity coating.

The invention discloses a reactor vacuum reflective thermal insulation device and nuclear reaction equipment. The reactor vacuum reflection heat insulation device comprises a shell, a reactor core assembly and a heat insulation reflection part, the shell is provided with a containing cavity and a vacuumizing opening, the vacuumizing opening is formed in the side wall of the shell, and the vacuumizing opening is used for vacuumizing the containing cavity; the reactor core assembly is arranged in the accommodating cavity, and a gap is formed between the reactor core assembly and the inner wall of the accommodating cavity; and the heat insulation reflection part is arranged between the reactor core assembly and the inner wall of the accommodating cavity. The low-emissivity and high-reflectivity radiation heat insulation mode of the heat insulation reflection part and the double heat insulation mode of combining the heat insulation reflection part with the vacuum interlayer are utilized, an obvious temperature gradient is formed in a compact space, the temperature of the outer surface of the shell of the pressure-bearing container is effectively reduced, and heat leakage of the reactor core assembly is reduced.

A method for manufacturing low-emissivity easy-clean glass and the resulting low-emissivity easy-clean glass and low-emissivity easy-clean composite glass. The method involves using RF (Radio Frequency) sputtering of a silicon oxide target while simultaneously introducing nitrogen gas, and simultaneously using DC (Direct Current) sputtering of a silver target to co-deposit nitrogen-doped silicon oxide silver (Si, O, N: Ag) on a clear glass substrate. This low-emissivity easy-clean glass can avoid oxidation issues, improve conductivity, hardness, water contact angle, and reduce hemispherical emissivity.

A vacuum insulated glass (VIG) unit, and a window having the same, the VIG unit including paired glass sheets separated by support structures maintaining a gap between the paired glass sheets, a dense edge sealing peripherally arranged creating a sealed cavity between the paired glass sheets, a getter placed in the gap between the glass sheets, where the pressure in the sealed cavity is no higher than 0.001 mbar, where at least one of the first glass sheet and the second glass sheet includes a low-emission coating, where the edge sealing is made from low temperature glass frit powder material, and includes less than 0.1 wt % lead, less than 1 wt % solvent and less than 1 wt % binder, where gaseous inclusions in the edge sealing constitutes less than 5% of the total volume, and where the glass frit powder material includes tellurium oxide and vanadium oxide.

A high-temperature resistant selective emission infrared stealth material, which has a layered structure and successively includes a base layer, a metal layer and a silicon nitride layer; the thickness of the metal layer is 50 nm - 1000 nm; the thickness of the silicon nitride layer is 1.2 μm - 1.8 μm. Preparation method of the infrared stealth material: (1) Clean and dry the base material; (2) Deposit the metal material on the base by magnetron sputtering, chemical vapor deposition or atomic layer deposition to form a metal layer; (3) Then deposit silicon nitride on the surface of the metal layer by magnetron sputtering or chemical vapor deposition to complete the preparation of the infrared stealth material. The selective emission infrared stealth material of the present invention, through the optimization of the thickness of the metal layer and the silicon nitride layer, takes into account the requirements of low emissivity and radiative heat dissipation, and has important significance for better realizing infrared stealth.

The application provides a composite coating based on ultrahigh-temperature ceramic material and a preparation method and application thereof, and belongs to the technical field of coating materials. The low-emission solar energy absorption coating based on ultrahigh-temperature ceramic material is constructed through scientific and reasonable material design and advanced and precise preparation process, the ultrahigh-temperature ceramic material is innovatively introduced into the solar energy absorption coating system, the performance bottleneck of the traditional coating in the air environment application can be broken through, the high absorption rate, the low emission rate and the excellent thermal stability of the coating in the high-temperature air environment can be realized, and a solid material foundation for efficient and reliable utilization of solar energy in the high-temperature and complex air environment is laid.

A heat-resistant member comprises: a substrate made of isotropic graphite; a single-layered dense low-emissivity layer covering part of surfaces of the substrate; and a single-layered or multi-layered dense high-emissivity layer covering all or part of the remaining surfaces of the substrate. The dense low-emissivity layer has an outermost surface with an emissivity of εA, and has a relative density of 97% or more. The dense high-emissivity layer has an outermost surface with an emissivity of εB (>εA), and has a high-density region with a relative density of 97% or more in any portion between the outermost surface and the interface with the substrate. Preferably, an emissivity difference (εB−εA) is 0.1 or more.

This invention relates to a composite coating with low thermal expansion coefficient and low emissivity, its preparation method, and its application, belonging to the field of functional coating materials technology. The composite coating of this invention sequentially comprises a Si binder layer, a Ta₂O₅ stress buffer layer, and a Pt metal layer. The Si binder layer serves as the binder layer, the Ta₂O₅ stress buffer layer as the low thermal expansion stress buffer layer, and the Pt metal layer as the low emissivity functional layer. The thermal expansion coefficient of Si is 3~4×10⁻⁶. ‑6 / ℃, while the coefficient of thermal expansion of Ta2O5 material is 6~7×10. ‑6 At ℃, the coefficient of thermal expansion of Pt material is 8~9×10⁻⁶. ‑6 / ℃, through gradient coating design, the Pt metal layer can have excellent thermal cycling life and maintain low emissivity performance, which is suitable for substrates with low thermal expansion coefficient, and meets the future requirements of lightweight hot-end components and infrared signal shielding.

A lightweight, multilayer cryogenic insulator is formed by successive layers of low-emissivity sheeting and a separating truss-structure operating to resist circumferential deflection of the low-emissivity sheeting.

A monolithic dielectric coating composed of microscale periodic high-contrast gratings on multilayers of high and low refractive index optical materials is described, which is deposited on metal thin-films of flexible polymer insulation sheeting. The emittance can be minimized to any blackbody temperature, using parameter optimization of high-contrast grating phase-shift mode conditions. The high-low refractive index infrared-transparent multilayer is based on Fabry-Pérot cavity, but with non-quarter-wave thicknesses to achieve multilayer insulation conductance below that of metal films. This ultralow emittance coating is most relevant to thermal management of refrigeration and electronic components.

Described is a composition tailored in particular for automotive and flat glass applications as a glaze and / or enamel composition. Moreover, the present invention relates to a method of applying the composition on a Low-e coated side of a glass surface, in particular in the field of laminated automotive windshields, sunroofs, backlights produced via press bending process as well as architectural glass. Notably, composition according to the present invention facilitates Low-e coating dissolution and direct fusion to the glass substrate while preserving essential optical properties, and adhesion-meeting industry standards.

A lightweight, multilayer cryogenic insulator is formed by successive layers of low-emissivity sheeting and high elastic modulus mesh, the latter which provide thermal separation of the sheets while resisting high hoop stresses.

The invention belongs to the technical field of functional materials, and particularly discloses a coating with airplane grey and infrared stealth functions and a preparation method of the coating, and the coating comprises the following raw materials in parts by weight: 4.9-5.0 parts of low-emissivity filler, 18.3-18.5 parts of toning resin and 1.4-1.6 parts of curing agent. Wherein the low-emissivity filler adopts sheet-shaped aluminum powder or sheet-shaped silver powder with the particle size of 20 [mu] m-50 [mu] m; the toning resin is composed of BC05 resin, an inorganic black pigment, an inorganic blue pigment and an inorganic yellow pigment in a weight ratio of (30-32): (14.8-15.2): (2.9-3.1): (0.9-1.1). The coating provided by the invention has airplane gray and infrared stealth dual performances, has good adhesive force, is mainly formed by an air spraying technology and a low-temperature curing technology during preparation, is simple to operate and is convenient for industrial large-scale production.

This invention provides an optimization method for a magnetic compressor decompression device in an energy recovery accelerator, comprising: sequentially setting first to sixth bends along the beam direction to establish a chicane-structured magnetic compressor decompression device; determining the structure of the reverse-optimized beamline based on the decompression device; establishing constraints for a total deflection angle of 0, an anti-dispersion constraint, and a transfer matrix constraint, and solving the constraint conditions; establishing corresponding criteria with minimizing the slice center shift caused by coherent synchrotron radiation as the optimization objective; optimizing the variables of the reverse-optimized beamline based on the constraints and criteria; and reversing the placement of the reverse-optimized beamline to obtain the decompression device. This invention retains the advantages of conventional chicanes, such as a smaller deflection angle, which prevents over-compression, effectively reducing peak current intensity and helping to suppress slice center shift caused by CSR effects, thereby achieving lower emittance.