39results about How to "Improve thermal insulation properties" patented technology

The invention discloses a nano-porous aerogel / fiber composite super thermal insulation material and a preparation method thereof. The aerogel / fiber composite super thermal insulation material comprises silicon dioxide aerogel, alumina micro powder, zirconium oxide fibers and opacifying agent of titanium dioxide. The preparation method comprises that organic solvent, cross-linking agents and organic monomers make up pre-mixed solution according to a certain proportion, the silicon dioxide aerogel, the alumina micro powder, the zirconium oxide fibers, pore-forming agents, suspending agents and the titanium dioxide make up slurry through a ball milling process according to a certain proportion, then a certain amount of initiating agents and a certain amount of catalytic agents are dropwise added into the slurry through vacuum bubble removal, composite material in-situ solidification is achieved through a gel injection moulding process, and then demoulding, vacuum drying and degreasing glue discharging are conducted. The nano-porous aerogel / fiber composite super thermal insulation material has a nano-porous / reinforced fiber composite microstructure, the heat conductivity is 0.040-0.046W*m<-1>*K<-1> (298K), and the flexure strength is as high as 12-14MPa. Preparation processes are simple, industrialized application is easily achieved on a large scale, and the nano-porous aerogel / fiber composite super thermal insulation material is suitable for thermal protection of aerospace, military affairs and severe rugged environments.

A method of preparing aerogels / nonwoven composites fireproof and heat-insulating materials with a hydrophobic or hydrophilic surfaces and includes steps as follows. A mixture solution in which alkoxysilane, silicones and silane coupling agents are mixed and stirred is instilled by acidic catalysts for a hydrolysis reaction during which a silane coupling agent solution is added for continuous stirring; a hydrous alkali catalytic (anhydrous alkali catalytic) organic solution is added in the mixture solution for a condensation reaction and development of a 'silicones-silica aerogels-silane coupling agents' aerogel mixture solution; a non-woven felt is impregnated with the mixture solution for development of soft hydrophobic (hydrophilic) aerogels / nonwoven composites fireproof and heat-insulating materials after curing and natural drying. The aerogels / nonwoven composites materials with softness and surface hydrophobicity / hydrophilicity available in mass production are applicable to thermal-insulating materials for high-temp industrial facilities or indoor heat-insulating and fireproof panels of a building structure.

An exhaust gas-carrying tubular body (1) is provided for an exhaust system (2) of an internal combustion engine, especially of a motor vehicle. The tubular body (1) is provided on its inside (5) facing the exhaust gas and / or on its outside (6) facing away from the exhaust gas with a coating (7, 8), which is formed of a composite ceramic based on nanoparticles.

The invention provides a nano multifunctional outer wall heat preservation coating. The coating consists of the following components in percentage by mass: 10 to 20 percent of nano aluminum silicate, 5 to 15 percent of calcium silicate nanowires, 10 to 20 percent of nano calcium carbonate, 15 to 30 percent of vinyl acetate / acrylic emulsion or styrene-acrylate emulsion, 20 to 40 percent of water, 4 to 10 percent of nano titanium dioxide, 0.1 to 1 percent of film coalescing aid, 0.1 to 2 percent of antifoaming agent, 0.1 to 0.5 percent of wetting dispersant, 0.5 to 1 percent of anti-freezing agent and 0.1 to 2 percent of flatting agent. A preparation method for the coating comprises the following steps of: adding the water, the nano aluminum silicate, the calcium silicate nanowires, the nano calcium carbonate, the wetting dispersant and half of the antifoaming agent with low-speed stirring, and stirring for 1 to 3 hours at a high speed; adding other inorganic nano-powder with stirring; stirring the mixture on a multifunctional dispersion machine at the high speed for 1 to 3 hours; dropwise adding an emulsion slowly at a low stirring speed; adding residual antifoaming agent, the filmcoalescing aid, the anti-freezing agent and the flatting agent and stirring for 3 to 5 hours at the low speed; and finally canning to obtain a finished product of the coating. The outer wall heat preservation coating of the invention has the characteristics of high heat preservation and thermal insulation properties, strong adhesive force, high washability and anti-bacterial self-cleaning property, non-toxicity and odorless.

This invention relates to a lightweight housing module comprising at least one stretched fabric intended to form the roof of said module and fixed along its lower edge on a rigid frame maintained at a distance from the ground by a plurality of lateral posts, remarkable in that it comprises vertical panels and / or opening frames in order to close in a substantially sealed manner its vertical facades and a false ceiling arranged in order to be arranged under said fabric inside said lightweight housing module and fixed to the frame. This invention also relates to a modular building remarkable in that it comprises a plurality of lightweight housing modules, according to the invention, arranged next to one another, and a system for sealing between the adjacent lightweight housing modules. This invention also relates to their method of assembly.

A power storage device, while absorbing expansion of the battery cells, prevents inducing thermal runaway by blocking heat conduction between battery cells, and is provided with: a battery stack formed by stacking multiple battery cells (1); separators (2) arranged between the battery cells (1); and a fixing member for fastening the battery stack in the stacking direction. The separator (2) is formed from a perimeter frame (3) and a thermal insulation base material (4) provided in the opening (3X) of the perimeter frame (3). The perimeter frame (3) is arranged on the outer periphery of the stacking surface (1A) of the battery cell (1) and has an opening (3X) on the inside, and the thermal insulation base material (4) has flexibility that allows deformation when pressed by the expanding stacking surface (1A) of the battery cell (1). The perimeter frame (3) is more rigid than the thermal insulation base material (4), the perimeter frame (3) specifies the interval between adjacently stacked battery cells (1), and the flexible thermal insulation base material (4) has a structure that absorbs expansion of the stacking surface (1A) of the battery cell (1).

The invention relates to a method for sintering building spoils into foamed ceramics, comprising the following steps: (1) collecting building spoils, and processing the building spoils to prepare sintered aggregate; (2) preparing materials according to the following formula, and sintering 70-80 parts of aggregate, 5-7 parts of animal foaming agent, 5-7 parts of bentonite, 5-7 parts of glass fragments, 20-60 parts of water; (3) Put the components of step (2) into a ball mill for ball milling , adding water to smelt the mud, pouring it into a mold, forming it under pressure, and demoulding to obtain a green body; (4) drying the green body to obtain a dried green body, and then putting the dried green body into a muffle furnace for sintering to prepare foamed ceramics. Compared with the prior art, the invention processes and recombines the difficult-to-use building waste soil so that it can be used as raw material for sintered foamed ceramics, and at the same time improves the performance of traditional foamed ceramics.

A flexible direct-LED backlight device and a display apparatus comprising the same. The backlight device comprises a graphene heat dissipation coating (1), a flexible circuit board (2), a mini light-emitting diode (3), a bubble adhesive layer (4), an optical film layer (5), and a flexible liquid crystal display screen (6) which are sequentially disposed. At least two bubbles (41) are provided in the bubble adhesive layer (4). The bubble adhesive layer (4) having the tiny bubbles (41) is disposed between the optical film layer (5) and the mini light-emitting diode (3), such that light emitted by the mini light-emitting diode (3) is reflected when passing through the bubble adhesive layer (4), thereby effectively diffusing the light emitted by the mini light-emitting diode (3), and reducing the thickness of the bubble adhesive layer (4). The configuration can improve thermal insulation properties of the bubble adhesive layer (4), increase thermal resistance, reduce heat transferred from the backlight device to the liquid crystal display screen, reduce the temperature of the liquid crystal display screen, increase the viscosity of liquid crystal materials, and reduce light leakage. The configuration can also improve flexibility of the backlight device. When the backlight device is in a bent state, good shrinkage properties of the bubbles can offset the material deformation caused by a portion of the materials being bent, such that the backlight device can meet the demand for improved curvature.