98results about How to "Strong heat insulation" patented technology

The invention discloses a making method of nanometer whisker and inorganic nanometer particle compound, which is characterized by the following: adapting random copolymerization polypropylene (PP-R) as base material; improving the heat-durability for PP-R pipe specific resin and breakage extension rate and anti-bent strength through layer-shaped mica and modified nanometer whisker and inorganic nanometer particle compound; forming hollow network structure for nanometer whisker in the base; making the layer-shaped mica compound with plug-layer; combining distribution property of nanometer dimension for zero-dimension nanometer particle in the base with layer-shaped mica to improve heat property and mechanic property of PP-R pipe resin.

The invention relates to an autoclaved aerated concrete building block and a preparation method thereof, in particular to an autoclaved aerated concrete building block containing industrial solid waste and a preparation method thereof. The autoclaved aerated concrete building block containing industrial solid waste comprises, by weight percent, 35%-47% of base material, 35%-39% of magnesium chloride solution, 10%-15% of magnesium oxide, 2%-5% of binder, 2%-3% of industrial hydrogen peroxide, 1%-2% of lanthanide rare earth, and 5%-7% of additive. The autoclaved aerated concrete building block has the advantages of fire prevention, water proofing, moth prevention, lightness, crush resistance, bending resistance, high strength, moss avoidance and the like. The proportion of the materials determines the water proofing and moth prevention. The fire prevention meets the standard (class A) of nonflammable materials. The crush resistance is larger than 53Mpa. The bending resistance is larger than 80Mpa. In addition, the industrial solid waste is effectively utilized, wastes are utilized, environment is protected, and the wastes are turned into wealth.

The invention belongs to the technical field of polymer composite materials, and particularly relates to a solar evaporator with a hollow structure and a preparation method and application thereof. According to the solar evaporator provided by the invention, the interior of the solar evaporator is of a hollow structure, the exterior of the solar evaporator is a shell layer of a two-layer structure, and the two-layer structure is composed of a porous polymer skeleton inner layer and an outer layer formed by a photo-thermal material. Under the irradiation of simulated sunlight (wherein one sunlight intensity is 1 KW / m<2>), the maximum value of the evaporation rate of the solar evaporator can reach 1.476 kg / m<2> / h, and the maximum value of the evaporation efficiency of the solar evaporator can reach 92.9%.

The invention relates to a hot mould centrifugal cast iron pipe mold paint and a preparation method thereof. The invention mainly solves the technical difficulties of poor quality and low yield and poor economic benefit of a cast iron pipe produced by the traditional paint. The technical scheme is achieved as follows: the hot mould centrifugal cast iron pipe mold paint comprises the following components in percentage by weight: 14-16 percent of kaoline, 14-16 percent of burned diatomite, 2-4 percent of sodium base bentonite, 2-3.5 percent of talcpowder and 64-68 percent of water. The preparation method comprises the following steps: firstly, adding the kaoline, the burned diatomite, the sodium base bentonite and the talcpowder in percentage by weight into a mixing pan for dry mixing; secondly, adding 1 / 4 of water with weight percentage of 64-68 percent into the mixing pan; thirdly, mixing and rolling into a hard paste material for storage for later use; fourthly, when in use, putting the material into a wheel-rolling mixer, adding the left 3 / 4 of water into the wheel-rolling mixer for mixing-rolling and obtaining the mold paint when the concentration reaches 1.2.

The invention relates to an anticorrosion environment-friendly building water-based coating material and a preparation method thereof. The high-strength environment-friendly building water-based coating material contains raw materials such as graphene, hydroxypropyl methylcellulose, polyamide, magnesium phosphate, fatty acid sorbitan, polysorbate, sodium hexametaphosphate, organic silicon emulsion, epoxy silane modified silicon sol, cross-linked polyethylene, tert-butyl peroxybenzoate, sodium silicate, melamine polyphosphate, N-dodecyl mercaptan, pentaerythritol, alumina silicate fiber, silicon dioxide, 2,4,5,6-tetrachloro-3-benzenedicarbonitrile, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, water-based polyurethane resin, acrylate, tung oil, titanium dioxide, polyvinyl alcohol, light calcium carbonate, talcum powder, titanium dioxide, silicon carbide, glass fibers, fluorine resin, water-based epoxy modified resin, styrene-acrylic emulsion and a siloxane defoaming agent. The anticorrosion environment-friendly building water-based coating material has high temperature resistance and corrosion resistance and is suitable for the coating requirements of various fields; moreover, the anticorrosion environment-friendly building water-based coating material contains no toxicity and organic solvents, has no pollution and also has the advantages of no fracturing of a coat, aging resistance, corrosion resistance and the like.

The invention relates to a heat insulation polyimide nanofiber aerogel and a preparation method thereof. The heat insulation polyimide nanofiber aerogel is prepared from the raw material components ofpolyamide acid nanofibers and water soluble polyamide acid, wherein the mass ratio of the polyamide acid nanofibers to the water soluble polyamide acid is (1-5) to 1. According to the heat insulationpolyimide nanofiber aerogel, the good compression returning performance is achieved, the heat conductivity coefficient is low, the good heat insulation capability is still achieved under the high temperature and compression, the combination property is excellent, the preparation process is simple and easy to operate, environmental protection is achieved, and the insulation polyimide nanofiber aerogel can be used in various heat insulation scenes.

The invention discloses a pesticide packaging bottle and a preparation method thereof. The pesticide packaging bottle contains the following components (by weight): 40-50 parts of PE resin, 8-15 partsof LLDPE, 5.5-8.5 parts of nanometer tin antimony oxide, 0.7-1.4 parts of nano titanium dioxide, 5-10 parts of modified hollow glass beads, 1-3 parts of a cross-linking agent, 0.3-0.6 part of an antioxidant, 1-3 parts of butyl stearate, 1-3 parts of a compatilizer, 1-5 parts of a plasticizer, 1-3 parts of a reinforcing agent, and 5-10 parts of zinc borate. The preparation method comprises the following steps: S1: calcination; S2: melt blending extrusion; S3: vacuum reaction; and S4: blow molding. The pesticide packaging bottle of the invention has the advantages of good heat resistance and heat insulation, and high toughness and strength; in addition, the preparation method of the invention has the following advantages: the bottom of the prepared packaging bottle has no joint line, and the bottle body and the bottom are integrated as a whole.

The invention relates to a high-sealing mechanism applied to a box / cover. The high-sealing mechanism comprises a housing composed of at least three panels, and the housing is provided with an inner containing cavity. The high-sealing mechanism is characterized in that the housing is provided with a ventilation window, wherein the ventilation window is provided with a self-sealing type heat dissipation ventilation window; the self-sealing type heat dissipation ventilation window comprises a frame, a soluble part, an elastic part and sliding windows; the frame is mounted in the inner containingcavity of the housing and distributed on the ventilation window; the frame is provided with an upper mounting area and a lower mounting area; the sliding windows are mounted between the upper mountingarea and the lower mounting area; the soluble part abuts against the lower abutting faces of the sliding windows; the elastic part abuts against the upper abutting faces of the sliding windows; the sliding windows are provided with ventilation openings; and a front shielding face is formed between every two ventilation openings of the sliding windows. The fireproof heat dissipation ventilation window is kept in a normal state when no fire happens, air convection ventilation in the fireproof cover can be achieved, external flames, heat or other combustion products are prevented from entering the fireproof cover, the temperature and humidity in the cover are kept, and normal use and operation of protected products or equipment are guaranteed.

The invention relates to a movable hard rescue capsule emergency door, which comprises a door wall plate, a door plate, a heat insulating material, a crossed latch, a fixed sleeve, a conical sleeve, a door shaft, two hand wheels, an inner lining plate, a door frame, a first limiting pin and a second limiting pin, wherein a cavity between the inner lining plate and the door plate is filled with the heat insulating material; the crossed latch is positioned outside the inner lining plate; a through hole is formed in the centers of the door plate, the inner lining plate and the heat insulating material; the fixed sleeve is welded in the through hole of the door plate; the door shaft penetrates through the conical sleeve, the crossed latch and the fixed sleeve from inside to outside of a capsule in sequence; the conical sleeve corresponds to a conical hole in the top of a nut and the sizes are the same; the two ends of the door shaft are provided with one hand wheel respectively; the door plate is provided with the first limiting pin on the inner side of the capsule; and the door wall plate is provided with the second limiting pin on the inner side of the capsule. The movable hard rescue capsule emergency door has the characteristics of better heat insulating and sealing effects and high reliability and can be widely applied to the field of mining.

The invention discloses a solid carrier rocket sub-stage capable of being recycled and reused. The solid carrier rocket sub-stage comprises a sub-stage body, an inflatable heat protection structure and a solid rocket engine; the inflatable heat protection structure comprises a front-end airbag which covers the windward side of a front cabin section under an expanding state and is in a shape of a rotating body, and the front-end airbag comprises a flexible heat-insulating layer and a heat-proof coating which are sequentially arranged from inside to outside; and the solid rocket engine comprisesa combustion chamber shell with a cavity allowing a grain to be placed, and a combustion chamber heat protection structure is arranged on the inner wall of the combustion chamber shell. By adopting the inflatable heat protection structure with heat protection, deceleration and buffering combined, the front-end airbag can maintain the good aerodynamic shape, the sub-stage is not damaged due to pneumatic heating and large landing impact force in the reentry process, and can be recycled, through re-charging, replacing of disposable parts and the like of the rocket engine, the sub-stage and the engine thereof can be reused, and thus the launching cost of a solid carrier rocket is lowered.

The invention belongs to the technical field of preparation of organic macromolecule compounds and discloses a polyurethane all-water-based organic foaming material. The polyurethane all-water-based organic foaming material is prepared from a liquid material A and a liquid material B, wherein the mass ratio of the material A to the material B is 1:(1 to 1.5); the material A is prepared from the following components in percentage by mass: 30 to 40 percent of amino resin, 35 to 40 percent of polyester polyethylether, 1 to 6 percent of high-activity crosslinking agent, 0.1 to 0.8 percent of silicone oil, 15 to 20 percent of nitrogen-phosphorus halogen-free flame retardant, 1 to 4 percent of catalyst and 1 to 3 percent of water; the material B is isocyanate. The polyurethane all-water-based organic foaming material disclosed by the invention has the advantages of strong heat insulating property, good dimensional stability, low possibility of being brittle and excellent flame-retardant effect.

The invention provides a cable bridge having a fireproof function. The cable bridge comprises a bridge main body. The cross section of the bridge main body is isosceles trapezoid. The bridge main body comprises a bottom plate and side plates. Two sides of the bridge main body are provided with connection members. The bridge main body is provided with a fire-resistant coating. The fire-resistant coating comprises, by weight, 100 to 120 parts of an inorganic filler, 20 to 40 parts of a binder, 50 to 80 parts of n-butanol, 10 to 20 parts of a plasticizer, 10 to 20 parts of a drier, 20 to 40 parts of a flame retardant and 10 to 20 parts of a preservative. The prepared fireproof coating has excellent flame retardancy, excellent heat insulation performances, excellent fire resistance and small environmental pollution. The fireproof coating and the bridge base have strong adhesion and good comprehensive performances. The lower surface of the base plate is provided with a smoke sensor and a temperature sensor. When the cable produces abnormity, a management staff is able to find the abnormity timely and makes the appropriate treatment so that the fire hazard is avoided.

The invention relates to a waterborne ultrathin steel structured fireproof coating and a preparation method thereof. In the fireproof coating, by adopting a mixed waterborne emulsion consisting of epoxy emulsion, vinyl chloride-vinylidene chloride copolymer and organosilicone modified styrene-acrylic emulsion in a specific mass ratio as the base of matrix emulsion and adding ammonium polyphosphate, melamine, pentaerythritol, pigment filler, a strengthening agent, an antirust agent, an anti-cracking agent, a thickening agent and water as raw materials, the prepared waterborne ultrathin steel structured fireproof coating has the advantages of good flame retardance, strong heat insulating property, excellent fire resistance and low environmental pollution; and moreover, when applied to a steel structure, the waterborne ultrathin steel structure fireproof coating has strong adhesion with the matrix and good comprehensive performance. The waterborne ultrathin steel structure fireproof coating provided by the invention is a fireproof coating applicable to thin steel structures inside and outside, and conforms to the standard of General Specifications of Fire Resistive Coating for Steel Structure of GB14907-2002; and the duration of fire resistance reaches 2-2.5h.

The invention relates to a light reusable thermal insulation material and a preparation method thereof. The thermal insulation material comprises an anti-scouring matrix material and an ablative composite material which is compounded with the anti-scouring matrix material and comprises an ablative resin, a gel curing agent and an ablative filler, wherein the anti-scouring matrix material comprisesan anti-scouring prefabricated body and a ceramic base body compounded with the anti-scouring prefabricated body, and the anti-scouring prefabricated body comprises an upper fiber prefabricated bodylayer, a lower fiber prefabricated body layer and a middle fiber base body layer. The method comprises the following steps: combining an upper fiber prefabricated body layer, a lower fiber prefabricated body layer and a middle fiber matrix layer to prepare an anti-scouring prefabricated body, and then compounding the anti-scouring prefabricated body with a ceramic matrix to prepare an anti-scouring matrix material; impregnating the anti-scouring matrix material with an ablative composite material mixed solution; and sequentially carrying out gelatinization and solidification on the anti-scouring matrix material to obtain the thermal insulation material. The thermal insulation material has the advantages of being excellent in ablation thermal insulation performance, high in shape maintaining capacity and capable of being repeatedly used.

The invention discloses a thermal insulation ceramic bowl with low heat conductivity coefficient and a preparation method thereof. The thermal insulation ceramic bowl is prepared from the following raw materials, by weight, 27-39 parts of dolomite, 20-30 parts of spodumene, 16-24 parts of vermiculite, 13-21 parts of fluorite, 10-15 parts of asbestos wool, 15-25 parts of magnesite, 14-22 parts of pitchstone, 4-8 parts of alumina hollow microspheres, 7-14 parts of floating beads, 5-8 parts of poly(ethylene oxide), 3-6 parts of sodium humate, 2-4 parts of calcium stearyl lactylate, 4-7 parts of hydroxypropyl distarch phosphate and 6-9 parts of antimicrobial powder. The heat conductivity coefficient of the prepared ceramic bowl is less than 0.3W / m.K. As the heat conductivity coefficient is low and heat-insulating property is excellent, heat conduction between the ceramic bowl and a hand is greatly reduced. Thus, the problem that a previous ceramic bowl is easy to burn hands when holding high-temperature food is well solved.

The invention discloses a regular-hexagon honeycomb core with detachable circular noise-reducing structures. The regular-hexagon honeycomb core comprises regular-hexagon honeycomb main structures, circular honeycomb structures and Y-shaped aluminum components, wherein the circular honeycomb structures are added among the regular-hexagon honeycomb main structures; part of wall plates at the positions, where the circular honeycomb structures and the Y-shaped aluminum components are mounted, of the regular-hexagon honeycomb main structures are lacking; the extra spaces are suitable for the mounting of the detachable circular honeycomb structures; the radiuses, the heights and the mounting density of the circular honeycomb structures can be adjusted as required; once one circular honeycomb structure is not needed, the circular honeycomb structure can be replaced by one Y-shaped aluminum component; not only the regular-hexagon honeycomb main structures and the circular honeycomb structures but also the regular-hexagon honeycomb main structures and the Y-shaped aluminum components can be fastened by adopting the mutually active force generated from material plasticity deformation; and accordingly, the Y-shaped aluminum components can also be detached.

The invention concerns a method for calefaction densification of a porous structure (mixed liquid-gas process) (5) which consists in immersing the porous structure in a liquid precursor, for example a hydrocarbon, and in heating the whole assembly to deposit the product for decomposition of said liquid precursor, for example of carbon, in the pores of said porous structure. The invention is characterised in that it consists in reducing the flow rate of liquid precursor penetrating into the porous structure, for example by means of a polytetrafluoroethylene filter (52) enclosing the structure, so as to reduce the vaporization phenomena of the liquid precursor around the porous structure to be densified.

The invention discloses an intelligent bidirectional roller blind type window, and relates to the field of building closing devices. The intelligent bidirectional roller blind type window comprises a window frame, the window frame is divided into two window bodies by a stand column, each window body is provided with a vertical rod and a roll shaft in a matched mode, a roll core is arranged in the stand column, the roll core is provided with transparent soft plastic film in a rolled mode, the transparent soft plastic film comprises two free ends, and the two free ends extend to different window bodies respectively. The intelligent bidirectional roller blind type window further comprises a power mechanism, and the two free ends of the transparent soft plastic film can be simultaneously furled in the roll core or unfolded in the window under the action of the power mechanism. The intelligent bidirectional roller blind type window further comprises a control circuit which enables the window to be automatically closed. The intelligent roller blind type window has the advantages that the transparent soft plastic film which can be furled is utilized to serve as a window sash and has the advantages that inner side cleaning and outer side cleaning are easy and others are not prone to being hurt; when the window is closed, two layers of the transparent soft plastic film which are separated from each other are formed in the window, and the transparent soft plastic film has stronger sound insulation and thermal insulation functions; the window can be automatically closed during wind blowing or raining, and the lives of people are more convenient.

The invention discloses an anti-aging texture stone-like paint. The stone-like paint comprises the following raw materials in parts by weight: 30 to 40 parts of quartz sand, 18 to 25 parts of coloredsand, 7 to 12 parts of modified styrene-acrylic emulsion, 6 to 10 parts of SiO2 aerogel powder, 4 to 6 parts of a thickening agent, 1 to 2 parts of butyl cellosolve, 0.2 to 0.3 part of methyl alcohol,1 to 2 parts of a wetting agent, 1 to 2 parts of a defoaming agent, 0.5 to 1 part of chitin and 0.1 to 0.2 part of a water repellent. The stone-like paint disclosed by the invention has preferable anti-aging performance, and simultaneously is high in cracking resistance, heat stability, heat insulation and mechanical property.

The invention discloses a lifting movable heat treatment bell-type furnace. The furnace comprises furnace tables, a furnace lining, heating elements, a shell supporting structure, tracks, motor base frames, driving motors, rolling wheels and lifting devices; the two furnace tables are arranged, and are laterally arranged at an interval; the furnace lining is arranged above the furnace tables, andan embedded part is prefabricated in the furnace lining; the heating elements are wrapped around and suspended from the inner wall of a side furnace plate and the inner wall of a top furnace plate through corundum ceramic nails, and the shell supporting structure is wrapped around the outer wall of the furnace lining; and the tracks are arranged on the two sides of the furnace tables and are symmetrically arranged in parallel, the bottom surface of the track on each side is fixedly connected to the ground through bolts, the motor base frames are arranged on the top surfaces of the tracks in the same direction, the rolling wheels rotate with the motor base frames through rotating shafts, the driving motor is arranged on one side of the motor base frame of each side, and the lifting devicesare arranged on the two sides of the top surfaces of the motor base frames. According to the furnace, the same furnace cover is provided with two furnace table structures, the working efficiency is high, the heat preservation effect of the furnace tables is strong, the lifting devices are stable in structure, and the shell supporting structure is firm in structure.

The invention relates to a surface thermal insulation structure of a high temperature device. The surface thermal insulation structure is particularly applicable to surface thermal insulation of a steam turbine. The surface thermal insulation structure comprises insulation pins welded on the surface of the high temperature device and an internal thermal insulation layer formed by at least one group of composite thermal insulation structures; the internal thermal insulation layer comprises a spraying ceramic fiber layer, a nano hole aerogel thermal insulation layer and a steel wire mesh layer from inside to outside; the spraying ceramic fiber layer is formed by spraying ceramic fiber mixed with a high temperature resistant binding agent, and can be firmly absorbed to the surface of the high temperature device, and the influence from the surface unevenness of the high temperature device and a phenomenon that the root of a connecting pipe can not be applied with cut thermal insulation cotton in place easily are eliminated. The surface thermal insulation structure is simple in structure and reasonable in design, and has the advantages that the thermal insulation integrity is good, the connection is firm, the required insulation thickness is low, the construction is easy, the surface thermal insulation structure is free from the influence from the surface unevenness, and the construction of a special-shape part is facilitated.

The invention belongs to the technical field of labour insurance protective suit, and particularly relates to a biodegradable flame retardant protective suit fabric. Aiming at the deficiencies of theexisting aramid fiber flame retardant protective suit for nuclear industry that an aramid fiber fabric cannot be dissolved in water, more energy is consumed in incineration, more toxic and harmful substances are generated, and more combustion residue is caused, the following technical scheme is adopted: the biodegradable flame retardant protective suit fabric is prepared by performing after finishing padding on polyvinyl alcohol spunlace non-woven fabric, and an after finishing padding solution contains: chlorine (diisopropylamino) methoxy phosphine, high molecular weight ammonium polyphosphate, a flame retardant, kieselguhr, an acrylic ester binder, polyethylene glycol, amino silicone oil, polyoxyethylene ether wetting agent and water. The protective suit fabric has the following benefits: water solubleness, environment friendliness, high molten metal resistance, and good heat insulation property.

The invention discloses a communication cable. The communication cable comprises a cable core which comprises an H-shaped rubber framework. Wire cores are placed on the left side and the right side of the H-shaped rubber framework respectively. Elastic bars are respectively arranged between each wire core and the front end of the H-shaped rubber framework and between each wire core and the rear end of the H-shaped rubber framework. Each wire core comprises a conductor, and each conductor is sequentially covered with a fluorinated ethylene propylene insulation layer, a tin-coated steel wire braiding shielding layer and an inner sheath. The cable core is sequentially covered with a glass wool rope winding layer, an aluminum-plastic composite film shielding layer, a thermal insulating layer and an outer sheath. According to the communication cable, the cable core is sequentially covered with the glass wool rope winding layer, the aluminum-plastic composite film shielding layer, the thermal insulating layer and the outer sheath, so that the insulating and shielding effect is good, the thermal insulating performance is high, and the service life is long.

The invention relates to a face plate sealing structure applied to a flameproof enclosure. The face plate sealing structure comprises a casing formed by a plurality of face plates, splicing surfaces are arranged on the peripheries of the face plates, the splicing surfaces are arranged along the edges of the face plates to form sealing rings connected end to end, each splicing surface consists of multiple step surfaces, a stepped splicing structure is formed, and every two face plates are in mutual close fit through the splicing surface to form the sealing structure. The sealing structure prevents outside flame, heat or other combustion products from entering, keeps temperature and humidity in the enclosure, and guarantees normal use and operation of a protected product or equipment.

The invention discloses a splicable solar roof. The splicable solar roof comprises a body. The body is composed of a photovoltaic cell piece, a polyurethane foam layer and a roof backboard layer. The photovoltaic cell piece is fixed to the upper portion of the polyurethane foam layer through a pressing strip frame and pulling rivet nuts. The pressing strip frame is arranged on the edge side of the top of the photovoltaic cell piece. A heat collection layer is arranged on the polyurethane foam layer. A groove is formed in one end of the polyurethane foam layer. A protrusion is arranged at the other end of the polyurethane foam layer. A connection part is arranged in the polyurethane foam layer. The roof backboard layer is arranged on the lower portion of the polyurethane foam layer. According to the splicable solar roof, heat generated by shining the roof by the sun is discharged by heat conduction pipes in the heat collection layer, so that the heat is effectively prevented from entering a room, the splicable solar roof has the good heat insulation capacity, connection between bodies can be closer, and the splicable solar roof has the good water prevention capacity; and the body can be made to have high structure fastness, so that the physical life of the solar roof is prolonged.

The invention relates to a microporous refractory heat-insulating material and a manufacturing method thereof. The microporous refractory heat-insulating material comprises the following materials proportioned by weight portion: 40 to 70 portions of aggregate, 20 to 50 portions of base material, 2 to 8 portions of foaming agent and not more than 5 portions of water, wherein the base materials consists of the following materials proportioned by weight portion: 20 to 30 portions of coagulant ingredient, 2 to 5 portions of coagulant, 2 to 4 portions of expansion agent, 3 to 5 portions of reinforcing agent, 0.2 to 0.6 portion of water reducing agent, 4 to 6 portions of bonding agent, and 2 to 7 portions of foaming agent which is an animal foaming agent or a vegetal animal foaming agent. The manufacturing method is characterized by comprising the following steps: according to the weight mixture ratio of the materials, adding water to the base material; putting the mixture into a foaming mechanical equipment to mix and uniformly stir the mixture; then adding the foaming agent to form uniform foamed mud through stirring; adding the aggregate into uniform foamed mud, uniformly stirring theaggregate and the uniform foamed mud to prepare castable of the microporous refractory heat-insulating material; and subjecting the castable to injection dry molding or in-situ casting framework molding. The microporous refractory heat-insulating material has bending strength greater than 2.0 MPa, compressive strength greater than 3.5 MPa, ultra-low thermal conductivity, volume density between 250 and 300 kg / m<3>, heat conductivity coefficient between 0.03 and 0.18 w / m.k, as well as strong refractory heat-insulating performance.

The invention discloses a preparation method of a vacuum-packaged / microporous powder composite high-temperature thermal insulation material. The preparation method comprises the following steps: adding 5-10% of ZrO2 fibers and 0-20% of a TiO2 opacifier into 75-95% of SiO2-Al2O3 composite microporous powder, uniformly mixing the components, pressing the mixture to obtain a microporous powder composite plate blank, hot-pressing the sides by using SiO2 ceramic membranes as a packaging material, and packaging the composite plate blank into the packaging material to complete first-time vacuum-pumping pre-packaging; and heating to 600 DEG C in a vacuum hot-pressing furnace, carrying out second-time vacuumizing, heating to 1200 DEG C, and hot-pressing the last side to finish vacuum packaging, thereby obtaining the vacuum-packaged / microporous powder composite high-temperature heat-insulating material. Vacuum pumping is carried out twice on the product at 600 DEG C, so that the high vacuum degree in the packaging material in a high-temperature working environment can be maintained; and meanwhile, Al2O3 and TiO2 micro-powder is added into the SiO2 micro-powder, so that the thermal stabilityof the microporous powder is improved, and the thermal insulation property at high temperature is ensured. The product is applied to a thermal insulation layer of a high-temperature kiln, can effectively reduce heat loss during working of the kiln and improve the energy utilization rate, and is a new generation of high-performance high-temperature thermal insulation material.

The invention provides an aerogel composite structure material as well as a preparation method and application thereof and a structure or a device comprising the same. In the aerogel composite structure material provided by the invention, by combining the materials such as aerogel, hollow glass beads and reinforced fiber web, the compression resistance of the material can be effectively improved while original properties of good thermal insulation and low density of aerogel can be maintained; and furthermore, the aerogel composite structure material provided by the invention also can be used for preparing a pressure-resisting thermal insulation material or a pressure-resisting thermal insulation structure or device comprising the aerogel composite structure material. In the method provided by the invention, by physically combining the aerogel, hollow glass beads and reinforced fiber web, a convenient and fast novel material with high compression resistance can be provided, the preparation cost is low, and large-scale production is facilitated.

The invention belongs to the preparation field of nano coating powder and in particular relates to a preparation method of small-sized ultra-dispersed nano zirconium oxide-based coating powder. The preparation method is primarily finished by two reactions: room temperature settlement and high-temperature calcining by taking zirconium or inorganic salt of zirconium and rare earth, caustic soda and organic alcohol as raw materials. Nano hydroxide precipitate particles associated with salt crystals are generated by room temperature settlement. The salt crystals cover the periphery of the nanoparticles, so as to prevent growth and agglomeration of the nanoparticles in the high-temperature calcining and decomposing reaction process. The raw materials are low in price, the process is simple to operate, and the method of preventing growth and agglomeration of the nanoparticles is novel and skillful. The obtained nano zirconium oxide-based coating powder has the characteristics of excellent heat isolating ability, phase stability and high-temperature oxidization resistance. The invention provides a novel method for industrially producing the nano zirconium oxide-based coating powder, thereby providing more novel alternative materials for development of long-service life nano thermal barrier coatings.