47results about How to "Stable heat retention" patented technology

The invention discloses a polyphenylene granular thermal-insulation mortar. Construction waste regenerated powder is added as an inert filler into common thermal-insulation mortar. The polyphenylene granular thermal-insulation mortar comprises ordinary Portland cement, construction waste regenerated powder, sierozem powder, silica fume, polyphenylene granule, wood fiber, polystyrene fiber, redispersible latex powder and cellulose ether. The thermal-insulation mortar has the advantages of low heat conductivity coefficient, stable thermal-insulation properties, high softening coefficient, freeze-thawing resistance and aging resistance, and is suitable for thermal insulation of various walls.

The invention discloses a portable thermal-insulation cup, and belongs to the technical field of articles of daily use. The portable thermal-insulation cup comprises a cup body, an inner cup lid, an outer cup lid, a locking device, a detection device, a base, an infrared sensing switch and a controller; the cup body is internally provided with an inner cavity, the inner cup lid is arranged at the upper portion of the cup body, and the outer cup lid is hinged to the upper portion of the inner cup lid, and is provided with a first lug which is matched with the locking device to lock the outer cup lid; the locking device comprises a second lug, a pressing rod, an electromagnet, an elastic part and a second overturn shaft; the detection device is inset at the upper edge of the inner cup lid; the base is arranged at the bottom of the cup body, and is provided with an electric appliance mounting cavity; the infrared sensing switch is arranged at the outer circumference surface of the base; the controller is arranged in the electric appliance mounting cavity. According to the portable thermal-insulation cup, automatic opening and locking of the outer cup lid are achieved, and the problem that the cup opening is easily contaminated when a lid of a traditional thermal-insulation cup needs to be unscrewed with hands is solved.

The invention discloses a guide shell which is simple to produce, has a good insulation effect and is made from a high-strength carbon/carbon composite material. The guide shell provided by the invention comprises a cylindrical shell and is characterized in that the cylindrical shell comprises an outer cylinder (2) and an inner cylinder (3); one end of the outer cylinder (2) and that of the inner cylinder (3) are connected by a flange (1); the other ends are connected by a connecting ring (5) to form an integral body; carbon felt (4) is disposed between the outer cylinder (2) and the inner cylinder (3); the outer cylinder (2), the inner cylinder (3), the flange (1) and the connecting ring (5) are all prepared by the carbon/carbon composite material with the density being 1.0g/cm<3>-1.4g/cm<3>; and the density of the carbon felt (4) is 0.1g/cm<3>-0.2g/cm<3>. A production method of the guide shell comprises the following steps of: (1) processing for molding; (2) assembling of the cylindrical shell; and (3) purifying step. The production method is simple and easy to operate; in addition, by the adoption of the production method, the prepared guide shell provided by the invention has stronger thermal insulation performance and mechanical properties than graphite guide shells, the scour resistance and corrosion resistance of the guide shell surface is improved, and the slag-and-block dropping phenomenon on the surface of the guide shell is prevented.

The invention provides a cast-in-site rigid bone self-heat-preservation wall body, building blocks and a wall building method. The building blocks comprise concrete self-heat-preservation building block bodies, wherein trenches are formed in the concrete self-heat-preservation building block bodies; through holes running through the self-heat-preservation building block bodies are formed in the middle parts of the self-heat-preservation building block bodies; openings are formed in the side walls of the through holes. By the adoption of the self-heat-preservation building block bodies, the wall body is stable in heat preservation performance; furthermore, due to the openings, the mounting and the on-site construction are facilitated.

The invention relates to a thermal insulation system with long service life for a silicon carbide crystal growth furnace. On the basis of composite thermal insulation of soft/hard felts, a C/C composite material is innovatively selected as an innermost layer thermal insulating material, excellent characteristics that the mechanical properties are increased with temperature raised, the linear expansion coefficient is small, the ablative resistance is excellent, the damage tolerance is high, and adhesion does not occur under a high temperatures are utilized, a cylinder with a thickness of 0.5mmis adopted, the upper and lower ends are cut, two fractures exist per round, the fracture width is 1-1.5mm, so that formation of a closed circuit is avoided, because the C/C composite material has anextremely small linear expansion coefficient, the fractures are not closed under a high temperature, and a low obstruction to alternating magnetic field penetration is realized; and damage on thermalinsulation of each layer at an outer side caused by thermal corrosion, thermal shock, chemical corrosion and the like is fully reduced, the overall service life and stability of the thermal insulationsystem are improved, the stability period of a thermal insulation system can be increased from previous 800h to 1500h or more, and people only need to replace an innermost layer thermal insulating soft felt to restore a stable state, and the overall service life is extended by 1 time or more.

The invention relates to the technical field of a building construction wall brick, and particularly relates to a novel composite wall brick. The novel composite wall brick comprises a first foam concrete layer, a foam polyurethane layer, a second foaming concrete layer and a surface plastic spraying layer; the first foaming concrete layer, the foam polyurethane layer, the second foaming concrete layer and the surface plastic spraying layer are sequentially compactly arranged from inside to outside; and the inner surfaces of the contact face of the first foaming concrete layer and the second foaming concrete layer, and the foam polyurethane layer are in the shape of a tooth-shaped groove. With the adoption of the structural manner, the wall brick, a thermal insulating layer and an outer wall waterproof decoration can be organically combined to be a compound whole body, so that the working amount of the field construction can be simplified, the labor and the materials can be saved, the labor productivity can be improved, the knock-off operation is rapider and safer, and the thermal-insulating property is stable.

The invention relates to the technical field of polyurethane thermal insulation materials, in particular to an organic fireproof foaming material applied to thermal insulation of a water tank of a solar water heater. The material adopts the technical scheme that the material is formed by mixing and foaming isocyanate and a polyether composite, and the polyether composite contains main raw materials such as composite polyether, dimethyl ether, chitosan, an organic flame retardant and expanded perlite. The polyurethane hard foaming thermal insulation material overcomes the defect of great shrinkage after foaming forming, prevents the water tank from deformation, bulking, barring and even cracking, and ensures the thermal insulation property and the flame retardancy of the water tank of the water heater.

The invention relates to a thermal-insulation material, and discloses a polyurethane hard foam thermal-insulation material. The thermal-insulation material is prepared by mixing and foaming the following raw materials in parts by weight: 70-100 parts of dimer acid diisocyanate, 40-80 parts of polyether glycol I, 10-30 parts of polyether glycol II, 3-6 parts of expanded vermiculite, 5-8 parts of nano silicon dioxide, 10-20 parts of monofluorodichlorohexane, 1-5 parts of catalyst and 1-5 parts of foam stabilizer. The polyether glycol I is lignin polyether glycol, and the polyether glycol II is polyether glycol formed by carrying out polymerization on a polymerizable monomer epoxypropane by using modified soybean oil as an initiator. The thermal-insulation material has higher compression strength, tensile strength and impact strength, and avoids the phenomena of deformation, bulging, edging and even cracking of the water tank.

The invention relates to an organic polyurethane fireproof and heat insulating material for a solar water tank. The material is mainly prepared from a component A and a component B through mixing, wherein the component A comprises isocyanate, polyvinyl alcohol and a foaming agent; the component B comprises polyether glycol, gelatin powder, activated aluminum oxide, calcium carbide, tributyl phosphate and deionized water. According to the organic polyurethane fireproof and heat insulating material for the solar water tank, uniformly distributed and fine pores are formed, and the material is stable in heat insulating property, high in foaming speed and convenient to use; sepiolite is added to a white material, calcium powder enables the prepared heat insulating material to have a good flameretardant effect and a fireproof function; a proper amount of gelatin powder is added to the white material, the problem of poor flexibility of the heat insulating material can be effectively solved,and the prepared heat insulating material is convenient to use; a proper amount of tributyl phosphate is added to the white material, the problem of higher water absorbency of the heat insulating material can be effectively solved, and the prepared heat insulating material is low in water absorption.

The invention discloses internal wall thermal insulating mortar which is prepared from the following raw materials in parts by weight: 45-55 parts of slag cement, 3-6 parts of citric acid residue, 15-25 parts of quick lime, 10-15 parts of volcanic rock, 2-4 parts of asbestos fiber, 20-30 parts of hollow microsphere, 10-15 parts of calcined zeolite, 3-5 parts of soybean protein powder, 2-3 parts of sodium hexametaphosphate, 4-6 parts of guar gum powder, 2-3 parts of polyoxyethylene, 1-2 parts of sodium acetate, 2-3 parts of sugar calcium and 3-6 parts of composite packing. Compared with conventional thermal insulating mortar, the thermal insulating mortar disclosed by the invention has the characteristics of low volume-weight, high strength, stable thermal insulation property, freeze-thawing resistance, aging resistance, anti-cracking property, good anti-mold effect and the like, is green and environment-friendly, safe and reliable, simple and convenient to construct, low in cost, and can be widely applied to internal wall heat preservation systems.

The invention relates to a thermal insulation material and discloses a solar polyurethane thermal insulation material. The thermal insulation material is prepared by mixing and foaming the following raw materials in parts by weight: 70-100 parts of diphenylmethane diisocyanate, 40-80 parts of polyether polyol I, 10-30 parts of polyether polyol II, 3-6 parts of expanded vermiculite, 5-8 parts of nano silicon dioxide, 10-20 parts of dichlorofluoroethane, 1-5 parts of catalyst and 1-5 parts of foam stabilizer, wherein the polyether polyol I is lignin polyether polyol; and the polyether polyol II is polyether polyol polymerized by taking modified olive oil as an initiator and epoxy propane as a polymerization monomer. The thermal insulation material has better compressive strength, tensile strength and impact strength while the phenomena of water tank deformation, bulking, ridging and even cracking are avoided.

The invention relates to the technical field of wall bricks for construction, and specifically relates to a novel composite wall brick. The novel composite wall brick comprises a first foamed concrete layer, a foamed polyurethane layer, a second foamed concrete layer, and a surface sprayed plastic layer; the first foamed concrete layer, the foamed polyurethane layer, the second foamed concrete layer, and the surface sprayed plastic layer are tightly arranged from inner to outer; and the contact surface between the first foamed concrete layer/second foamed concrete layer and the foamed polyurethane layer has a tooth liked groove shape. Through the structure mentioned above, the wall brick, thermal insulation layer, and outer wall waterproof decoration are organically combined to form a composite whole body, which can replace the conventional wall materials. Moreover, the procedure of on-site construction is simplified, a large amount of resources and labor is saved, the work efficiency is improved, the construction becomes more convenient and safer, and the thermal insulation property of the wall brick is stable.

The invention discloses a high-performance metal reflecting type heat preservation layer, and belongs to high-performance heat preservation equipment. The problems that for a non-metal heat preservation material, the degradation phenomenon exists, the pit filter screen blocking risk is prone to occurring, and dust can be generated to harm health of construction personnel are solved. The high-performance metal reflecting type heat preservation layer is formed by assembling and connecting high-performance metal reflecting type heat preservation blocks, and connectors have two modes of detachableconnection and non-detachable connection and have the better high temperature resistance, corrosion resistance and thermal insulation resistance; the containment circulation pit filter screen blocking risk is effectively reduced; the nuclear power plant maintenance and replacement time is shortened; the mechanical strength is high, and the anti-seismic property and the shock resistance are good;the service life is long, and the heat preservation performance is stable in the service life; no dust is generated, no pollutant diffusion occurs, and harm of radioactive substances to operation andmaintenance personnel can be avoided or reduced; and no corrosivity is generated to the equipment or pipelines.

The invention provides an enamel heat-insulation tube which comprises an inner-layer tube and an outer-layer tube. The inner-layer tube is made of metal materials, and the outer-layer tube is made of enamel materials. The enamel heat-insulation tube is low in cost and stable in heat-insulation performance, and is not easy to deform.

The invention provides graphene oxide-based insulating mortar which is prepared from the following raw materials and water: the raw materials include graphene oxide, glass beads, cement, ground calcium carbonate, latex powder, hydroxypropyl methyl cellulose, wood fibers and polypropylene fibers. The invention also provides a preparation method of the graphene oxide-based insulating mortar. The preparation method comprises the following steps: dispersing graphene oxide in water; then adding mixed dry powder of glass beads, cement, ground calcium carbonate, latex powder, hydroxypropyl methyl cellulose, wood fibers and polypropylene fibers into the graphene oxide dispersion liquid; and uniformly stirring the mixture for 5-10min at a uniform speed to obtain the graphene oxide-based insulatingmortar. As the glass beads are replaced fully or massively by a small doping amount of graphene oxide, the inorganic insulating mortar has relatively good mechanical property and durability while ensures the insulating effect, so that the performance of the insulating mortar is integrally improved.

The invention discloses an oil-resistant and wear-resistant modified PVC resin nanometer environment-friendly construction materials and a preparation method. The construction material comprises organic silicon resin, organic solvent, vitrified micro-beads, titanium dioxide, quartz sand, silicon carbide micropowder, nanometer cerium oxide, ethanedioic polyester, light calcium carbonate, water-retaining resin polyvinyl alcohol, dispersant, thickener, brightener, zinc sulfide, foamed aluminum, hydroxy propyl methyl cellulose, nanosilicone dioxide, adhesive, cobalt naphthenate, molybdenum, nickel, propylene glycol, and chromium. The construction material is used for exterior walls of buildings specially, all performances of the exterior walls are effectively improved, nitrile rubber modifled bakelite, is mixed with the raw material and cured after being heated, melted resin turns into unmelted body structure rapidly from the linear structure. Mechanical performance is improved, and performance of high temperature resistance and low expansion is achieved. With pitch-based carbon fibers, mechanical performance of the material is enhanced, harmful gas and dust in the tail gas can be greatly absorbed and removed.

The invention discloses a heat preservation and decoration integrated construction process for a passive heat-bridge-free pitched roof with the thickness of 300 mm. The heat preservation and decoration integrated construction process comprises the following steps of (1) acceptance and cleaning of a base layer; (2) arrangement of a waterproof vapor-proof layer; (3) arrangement of a heat preservation layer; (4) arrangement of a fine aggregate concrete protection layer; and (5) laying of roof tiles. By applying the heat preservation and decoration integrated construction process, energy loss in an operation stage is reduced, thermal insulation performance is stable, waterproofness is good, various experimental results meet the design requirements, good economic benefits and social benefits are obtained, the building energy-saving efficiency can be greatly improved, and a national energy-saving strategy is greatly promoted.

The invention relates to a graphite heater. The graphite heater is provided with a cylindrical graphite heating cylinder body (1) as well as anode fixing holes (2) and cathode fixing holes (3) formed at the top of the graphite heating cylinder body (1); through grooves (4) are formed in the heating cylinder body; and the heating cylinder body is evenly segmented into 28 parts through the through grooves. The graphite heater of the invention has the advantages of simple structure, reasonable design, stable thermal insulation performance and excellent heating performance.

The invention provides a preparation method of a thermal insulation hard felt for a silicon carbide single crystal growth furnace, which comprises the following steps: carrying out first pretreatment on a carbon fiber felt matrix, and carrying out first carbonization treatment in a carbonization furnace to obtain a carbonized felt; preparing a treatment solution, and carrying out second pretreatment on the treatment solution to obtain a pretreatment solution; and cutting the carbonized felt, fixing a mold, spraying a pretreatment solution, and carrying out curing treatment, secondary carbonization treatment and machining to obtain the heat-preservation hard felt for the silicon carbide single crystal growth furnace. By optimizing the formula of the treating fluid and optimizing the process steps and the process parameters, the obtained heat preservation hard felt for the silicon carbide single crystal growth furnace has the advantages of stable heat preservation performance, excellent heat insulation performance and long service life.