66results about How to "Improve infrared radiation performance" patented technology

The invention discloses a composite graphene infrared radiation and heat conduction film and a manufacturing method of the composite graphene infrared radiation and heat conduction film, and is characterized in that a substrate is provided with a composite graphene infrared radiation coating layer. According to the manufacturing method of the composite graphene infrared radiation and heat conduction film disclosed by the invention, a thin film manufactured by utilizing good infrared radiation capacity and good heat conduction capacity of a composite graphene infrared radiation material has the good heat conduction capacity in both directions which are parallel to and vertical to the substrate, so that heat can be rapidly transferred from a heating part to a heat sink device or an environment, the heat conduction efficiency is increased, local hot points in a device are removed, and temperature gradient in a heat conduction path is reduced; the composite graphene infrared radiation and heat conduction film disclosed by the invention has the advantages that the manufacturing is simple and convenient, and a powerful support is provided for high integration of electronic devices and rapid heat conduction of heating devices.

The invention belongs to the technical field of heat dissipating materials and discloses an isocyanate modified graphene containing heat-dissipating coating material and a preparation method. The heat-dissipating coating material is prepared from a main agent and a curing agent, wherein the mole ratio of hydroxyl radicals of the main agent to isocyanate radicals of the curing agent is 1: (1 to 1.1); the main agent is prepared from a film forming matter, a solvent, adjuvants and heat conducting fillers according to a mass ratio; the curing agent is an isocyanate trimer modified low-temperatureoxygen plasma activated graphene solution. The invention simultaneously discloses the preparation method. The heat-dissipating coating material disclosed by the invention has excellent heat-conductingproperty and high infrared radiance, and heat can be rapidly conducted to a whole coating and is dissipated in an infrared radiating manner; graphene is activated by plasma, the hydroxyl radicals areintroduced to the surface of the graphene under the condition of not carrying in a large number of defects, and can be subjected to a cross-linking reaction with isocyanate, and after isocyanate is grafted, the graphene still reserve original heat-conducting property.

The invention relates to a far-infrared radiation nano material and a preparation method thereof, and belongs to the technical field of far-infrared radiation materials. The components and the mol ratio of the nano material are as follows: (Mg1-xMx)O:Al2O3:SiO2:TiO2:ZrO2:Re2O3=1:1:(4-6):(4-5):(1-2):(0.01-0.03), wherein, M is one or two of Fe and Ni, x equals 0-0.3, and Re is one of the rare earth elements Y, La and Dy. In the method, metal alkoxide and metal inorganic salt are taken as raw materials, citric acid is taken as a complexing agent, ethylene glycol is taken as a polymerizing additive, and polyethylene glycol is taken as a dispersant, sol is formed by heating the materials in water bath, and the sol is washed with absolute ethyl alcohol and dried to obtain precursor powder. Far-infrared radiation powder with the particle diameter of 20-50nm can be obtained by calcining the precursor powder. The power obtained by the method has small and even particle diameter, and higher infrared radiation rate at normal temperature and a broader waveband scopes (2-25mum).

The invention relates to a preparation method of a multi-component-doping modified zirconium diboride-silicon carbide coating, and belongs to the technical field of composite powder and coating preparation. The method comprises the following steps: preparing ZrB2-SiC agglomerated powder doped with MoSi2 and TaSi2 through spray granulation and induction plasma spheroidization, and forming a coatingon a substrate by adopting an atmospheric plasma spraying process. By doping MoSi2 and TaSi2 at the same time, firstly, the two components serve as low-melting-point phases to fill pores and cracks in the powder, so that the compactness of the coating is improved; secondly, the two components serve as high-emissivity components to effectively radiate out heat in the coating, so that the high-temperature resistance of the coating is improved. The coating has good temperature resistance, infrared radiation performance, oxidation resistance, scouring resistance and thermal shock resistance. Thecoating can bear 300s oxyacetylene ablation examination at the surface temperature of 2000 DEG C and breaks through the technical bottleneck of 1800 DEG C.

The invention discloses multiphase composite system infrared radiation ceramic powder applicable to products, such as infrared radiation energy-saving coating, an infrared radiation heater and the like, of a high-temperature industrial kiln (boiler). The multiphase composite system infrared radiation ceramic powder is prepared from the following raw materials in percentage by mass: 20 to 80 percent of spinel type solid melt ceramic powder, 6 to 60 percent of Al2O3, 5 to 56 percent of SiO2, 0 to 10 percent of MgO, 0 to 3 percent of BaO, 0 to 3 percent of CaO and 0 to 6 percent of TiO2, whereinthe spinel type solid melt ceramic powder is prepared from the following raw materials in percentage by mass: 0 to 60 percent of Fe2O3, 0 to 60 percent of MnO2, 0 to 12 percent of CuO, 0 to 10 percent of Co2O3, 0 to 6 percent of Mo2O3, 0 to 6 percent of NiO, 0 to 5 percent of V2O5 and 0 to 5 percent of WO3. The invention also discloses a preparation method of the multiphase composite system infrared radiation ceramic powder. All the raw materials are the common raw materials with wide sources; a spinel-silicate multiphase composite system has a stable structure, excellent infrared radiation property, can adjust the structure and the property of the materials easily by controlling the components, and has a wide application prospect.

The invention discloses a powder material with high infrared radiance in a broadband and the preparation method of the powder material. The powder material is of a cordierite material doped with Ba<2+> or/and Fe<3+>. The preparation method of the powder material comprises the steps of: firstly dissolving pioneer raw materials and doped raw materials which form the cordierite into an alcohol-water mixture solvent, stirring, drying, and then prefiring at the temperature of 600-1,000 DEG C under air atmosphere; and forging at the temperature of 1,150-1,350 DEG C; and finally cooling to room temperature along with a furnace. The powder material disclosed by the invention has radiance higher than 0.8 in the infrared waveband of 5-24mu m when being heated to 100 DEG C, especially, the most of infrared radiance is higher than 0.9 in the waveband of 14-20mu m and obviously higher than that of cordierite matrix, thus meeting application requirements in the fields of infrared interior wall insulating coating, infrared ceramic glazed bricks, industrial furance insulating coating and the like.

The invention discloses a preparation method of a high-entropy oxide with good infrared radiation performance, wherein the preparation method comprises the steps: by taking any four of CuO, MnO2, Fe2O3, Cr2O3, Co3O4, TiO2, ZnO and MgO powder as raw materials, carrying out ball-milling mixing, drying and grinding, then carrying out high-temperature calcination in an air atmosphere, and cooling and grinding a product to obtain the high-entropy oxide with a spinel structure. The high-entropy oxide is prepared by combining a mechanical wet grinding method and a solid-phase synthesis method, metal elements can be guaranteed to be sufficiently and uniformly mixed, the method has the advantages of simple preparation technology, high repeatability, high production efficiency, suitability for industrial production and the like, and the prepared high-entropy oxide is single in phase, high in purity, small in particle size, uniform in element distribution, has high infrared emissivity and good thermal stability, and is used as an infrared radiation material in the field of infrared radiation heating and heat dissipation materials.

The invention discloses a reversible dynamic macroporous elastomer polymer material and a preparation method and applications thereof. A polymerizable precursor (or a crosslinkable polymer precursor)and a template liquid that is insoluble in the precursor are mixed and evenly stirred, and the prepared emulsion is cured to obtain the reversible dynamic macroporous elastomer polymer material. The synthesis technology is simple, green, and environmentally friendly, is easy to perform and popularize, and has a high yield and a low preparation cost. The reversible dynamic macroporous elastomer polymer material has an adjustable reversible multilayer porous structure, has a good convertible sunlight reflection performance, an infrared irradiation performance, a strong liquid storage performance, and adjustable surface roughness, belongs to macroporous polymer materials, and has a wide application prospect in fields such as radiation refrigeration, solar heating, intelligent interface, and the like.

The invention discloses an energy-saving inner surface high-temperature radiation coating of a high-temperature furnace. The coating comprises infrared radiation powder, a bonding agent, a suspending agent and a deflocculation agent, and is characterized in that the infrared radiation powder comprises the following components in percentage by mass: 55%-70% of Cr2O3, 10%-22% of NiO, 0%-4% of TiO2, 0%-3% of SiO2, 0%-3% of Y2O3, 0%-6% of ZrO2, 1%-3% of Fe2O3 and 2%-5% of Nb2O3; the coating is 0.2-3 mm in thickness. The agglomerated infrared radiation powder is prepared by a paste spray-drying and milling process, and then the energy-saving inner surface high-temperature radiation coating of the high-temperature furnace is prepared by a plasma spraying process. The prepared coating is stable in performance, overcomes the shortcoming of instable performance of a conventional brushing coating at high temperature, and is good in infrared radiation performance at full waveband, high in strength of bonding with a metal base body on the surface of the high-temperature furnace and unlikely to cause cracks and drop in the using process.

The invention provides a spinel ceramic material with an infrared radiation function and a preparation method of the spinel ceramic material. The material comprises the following raw materials in percentage by mass: 62%-83% of Fe2O3, 5%-22% of a transition metal oxide A, 12%-33% of MgO, and 0%-10% of a rare-earth oxide B, wherein the transition metal oxide A is one or a mixture of more of Ni2O3, Co2O3 and MnO2; and the rare-earth oxide B is one or a mixture of Gd2O3, La2O3, Sm2O3, Y2O3, Pr6O11 and Dy2O3. The preparation method comprises the following steps: putting the Fe2O3, the transition metal oxide A, the MgO and the rare-earth oxide B into a ball milling jar, adding deionized water and carrying out ball-milling treatment; drying and pre-sintering; and then carrying out ball-milling treatment, secondary drying and ball milling, sieving, tabletting and calcining. The infrared radiation ceramic prepared by the method is stable in structure, and compared with other infrared radiation materials, the infrared radiation property at a waveband of 3-5 microns is excellent.

The invention relates to a preparation method of a far infrared heating bandage. The preparation method is characterized by comprising the following specific steps: step 1: after washing a bandage with a non-ionic detergent, airing at room temperature; step 2: mixing tourmaline powder and de-ionized water, wherein the mass percent of the tourmaline in a mixture is 2 to 15 percent; stirring at roomtemperature for 5 to 10min; then adding a dispersant, wherein the mass percent of the dispersant in the mixture is 1 to 5 percent; stirring for 1 to 2h to obtain a tourmaline dispersion solution; step 3: adding the tourmaline dispersion solution prepared by step 2 into a mixture of an adhesive and the de-ionized water, wherein the mass percent of the tourmaline dispersion solution is 30 to 80 percent and the mass percent of the adhesive s 5 to 25 percent; stirring for 2 to 3h to prepare a tourmaline after-finishing solution; step 4: carrying out one-padding and one-rolling on the washed and aired bandage in step 1 in the tourmaline after-finishing solution obtained by step 3, wherein the pick-up rate is 30 to 80 percent; drying and then baking at 120 to 140 DEG C for 0.5 to 2min to obtainthe far infrared heating bandage. The far infrared heating bandage prepared by the preparation method has the advantages of excellent temperature-rising performance, high temperature-rising value andsimple preparation method and is applicable to industrial production.

The invention discloses a normal-temperature high-radiance infrared ceramic material prepared through rapid laser self-propagating sintering and a preparation method thereof. The preparation method comprises the steps that CuO, Fe2O3, MnO2 and other transition metal oxides are adopted to be subjected to ball milling according to a certain proportion, drying, compacting and tabletting are conducted after ball milling is conducted, then the obtained product is placed in a copper crucible or on other matrixes, laser spot, power, time and other parameters are adjusted to carry out laser irradiation or sintering to enable the raw material mixture to be subjected to high-temperature solid-phase reaction, and thus the AB2O4 type ferrite material is obtained; secondly, the prepared ferrite is crushed, the crushed ferrite is mixed with cordierite according to a certain proportion, a proper amount of a pore-forming agent and a sintering aid are added, long-time ball milling, drying is carried out, and compacting and tabletting are carried out; and high-temperature sintering is carried out by using laser to finally obtain the high-radiance composite ceramic material. The method has the advantages of short sintering time, low energy consumption and the like, and the obtained composite ceramic material has high normal-temperature infrared radiance and wide application prospects.

The invention discloses a functional heat-insulating and environmentally friendly coating material and a preparation method thereof, belonging to the technical field of coatings. The functional and environmentally friendly coating material includes the following main raw materials: 15% to 45% of acrylic resin, 4% to 4% of titanium dioxide nanotubes 18%, heavy calcium powder 5%~22%, kaolin 2%~8%, hollow filler 10%~20%, silicone resin 5%~14%, silicon carbide powder 3%~12%, magnesium fluoride 1%~ 5%, water 10% ~ 30%, and appropriate amount of dispersant, toughener, thickener, defoamer. The coating preparation method comprises the following steps: adding titanium dioxide nanotubes, heavy calcium powder, and kaolin into water, and stirring uniformly; adding hollow filler and acrylic resin, stirring evenly; adding silicon carbide powder and magnesium fluoride, stirring evenly; adding silicone resin, stirring Obtain heat insulation and environmental protection coating material. The material's thermal insulation is a significant improvement over conventional reflective materials.

The invention discloses a room-temperature rapid-curing coating material with a high-infrared-radiation coating as a cured product, and a preparation method thereof, wherein the curing coating material is prepared by mixing and stirring an epoxy resin, a high-infrared-emissivity substance, an amine curing agent, imidazole, a coupling agent, an accelerant, a surfactant and a solvent, wherein the mixed solution is good in environmental protection property, has proper working life and paint film initial curing time at a room temperature, and is suitable for rapid curing at a room temperature. According to the invention, with the application of the curing coating material to perform surface treatment on parts, the defects of too long or too short working life and too long or too short initialcuring time of the coating materials in the prior art are overcome.

The invention discloses a building sunscreen heat insulation coating and a preparation method thereof. The preparation method comprises the following steps: mixing waterborne acrylic resin, modified silicon dioxide sol, zinc phosphate, organic fluorine epoxy resin and organic silicon resin to obtain a blended material, adding the blended material into a stirring tank, uniformly stirring, and filtering. Boric acid microparticles and an inorganic filler are doped into a SiO2 sol precursor, so defects in the nonlinear optical crystal are filled, the infrared radiation performance is further regulated and controlled, and the function of enhancing the infrared radiation performance of the atmospheric window wave band is achieved; and a dispersing agent is added the molecular chain of the dispersing agent can be completely expanded in an aqueous solution, and forms a surface adsorption layer with a certain thickness on the surfaces of SiO2 aerogel particles, and a steric hindrance effect is generated, so that the aims of promoting the development of high-grade green buildings and improving the dispersion stability of a SiO2 aerogel system are fulfilled.