47results about How to "Reduce heat insulation" patented technology

The invention relates to a device and method for performing jet spinning by means of melt-blown ultrafine fiber. The device comprises a melt-blowing device, a cooling bundling device, a jet spinning device and a collection device. The melt-blowing device is used for preparing melt-blown ultrafine fiber and conveying the melt-blown ultrafine fiber to the cooling bundling device; the cooling bundling device is arranged below the melt-blowing device and used for performing cooling and bundling on the melt-blown ultrafine fiber blown by the melt-blowing device; the jet spinning device is used for manufacturing the bundled melt-blown ultrafine fiber into ultrafine fiber yarn by means of the jet spinning method; the collection device is used for collecting the ultrafine fiber yarn. The melt-blown ultrafine fiber is directly spun into yarn or covering yarn, so that the melt-blown fiber is high in content and has the high specific surface area and low fineness and quality and has the good heat insulation, sound absorption, filtering, adsorption and other functions. In addition, due to the fact that the fiber has the good cohesion friction, and the spun yarn has little yarn hairiness and good evenness.

The invention discloses a geopolymer fiber reinforced concrete. The geopolymer fiber reinforced concrete comprises the following components: geopolymer, recycled concrete aggregate and carbon fiber, wherein the geopolymer is a cementing material prepared from fly ash, slag, spontaneously combusting gangue and alkaline activator. According to the invention, industrial waste resources are made full use of; environmental destroy and pollution are reduced; production cost for the geopolymer fiber reinforced concrete is reduced; and the geopolymer fiber reinforced concrete has superior physical and chemical performances.

The invention relates to a multifunctional phosphating solution and a preparation method and application thereof. The multifunctional phosphating solution comprises liquid A and liquid B and is characterized in that a ratio of the liquid A to the liquid B in the multifunctional phosphating solution is 1: 0.1-1. The liquid A comprises the following substances, by mass, 26 to 48 parts of diammonium phosphate, 0.9 to 12 parts of phosphoric acid with a concentration of 85%, 0.8 to 1.8 parts of metal powder, 0.6 to 1.4 parts of animal glue, 0.4 to 10 parts of calcined gypsum powder and 0.3 to 0.8 part of alum, with the balance being water. The liquid B comprises the following substances, by mass, 20 to 46 parts of zinc dihydrogen phosphate, 38 to 55 parts of zinc nitrate, 2 to 3.8 parts of sodium fluoride, 2 to 4 parts of zinc oxide and 2 to 6 parts of phosphoric acid with a concentration of 85%, with the balance being water. The multifunctional phosphating solution provided by the invention is composed of the liquid A and the liquid B, can realize removal of oil and rust at the same time and has the efficacy of rust protection, heat insulation, high temperature resistance, heat preservation, flame retardation, noise abatement, shock prevention, isolation, pollution cleaning and resistance to fire. The multifunctional phosphating solution has the following beneficial effects: a fast rust removal speed, great thickness of a formed film, long antirust time, etc.

The invention discloses an ultralow-temperature moulding device and method for aluminum and lithium alloy complex curved-surface thin-walled components. The moulding device comprises a copious coolingtank, a control cabinet, a liquid nitrogen container, a solenoid valve group, a male mould, a female mould, a temperature detector and an edge pressing device; the male mould, the female mould, the temperature detector and the edge pressing device are arranged in the copious cooling tank; the solenoid valve group is arranged on a pipeline which connects the liquid nitrogen container and the copious cooling tank; the solenoid valve group and the temperature detector are both electrically connected to the control cabinet; the edge pressing device is arranged to be capable of pressing a plate blank between the male mould and the female mould; and a tank door is arranged on the copious cooling tank. By adopting a cooling device of the ultralow-temperature moulding device, temperature can be maintained unchanged at any temperature between 0 DEG C to minus 180 DEG C during a moulding process; an ultralow-temperature energy field is provided for the moulding process, so that moulding capability of aluminum and lithium alloy thin plates is greatly improved; deforming is more uniform; thinning and partial corrugating during the moulding process are reduced; and breakage of the components during the moulding process is avoided.

The invention discloses an impact-resistant curved rod dot-matrix sandwiching board structure. A curved rod dot-matrix structure and a sandwiching board structure are combined to obtain the sandwiching board structure having light weight, high strength and strong impact resistance. The impact-resistant curved rod dot-matrix sandwich board structure consists of an upper surface board, a lower surface board, and a curved rod dot-matrix structure core layer, wherein the curved rod dot-matrix structure core layer is formed by single curved rod substructures extending in a space, and each single curved rod substructure is formed by a plurality of same-shaped curved rods crossed at equal angles. The curved rod dot-matrix structure is light in weight and high in strength, has good deforming capability and energy absorption efficiency under the effect of impact load, is combined with the sandwiching board structure to have good flexural rigidity and impact resistance and has broad applicationprospects in the fields of aerospace, civil engineering, machinery manufacturing and the like.

The invention discloses a hollow microsphere wood plastic composite board and a manufacturing method of the hollow microsphere wood plastic composite board. In order to achieve the aims of manufacturing of a high-strength sound suction heat isolation wood plastic composite board and solving the problem that a vacuum environment cannot be formed in the wood material, the manufacturing method of the hollow microsphere wood plastic composite board is provided. The method comprises steps of material preparation, raw material pretreatment, plastic sheet preparation, roller mixing, vacuum tube paving, slab layered paving, hot pressing and cold pressing and later-period machining. The method has the beneficial effects that the sealed vacuum environment is formed in the wood plastic composite board, and therefore the wood plastic composite board has the part of characteristics of a vacuum material, the temperature and sound isolation property of the wood plastic composite board can be improved, the manufactured hollow microsphere wood plastic composite board has the effects of low density, and temperature and sound isolation, the board has the low average density and high surface density, and it is ensured that the board is small in weight, high in strength and good in surface machining property.

The invention relates to a heat flow heater with wall insulating property, which structurally comprises a heater shell and a copper core, wherein the interior of the heater shell has a multilayer box body structure made of metal, the box body layers are fixedly connected by metal columns or bolts to form a support framework and a conductive path for leaking heat among the box body layers, and the positions of the adjacent double box body layers fixed by the metal columns or the bolts are different; the adjacent box body layers are provided with gaps; each box body layer is provided with a separate insulating cover; the copper core is in shape of a plurality of grids and is fixed in the center of the heater shell; the exposed part of the copper core is a heating surface; a heating plate is arranged in each grid of the copper core, and the left side and the right side of the heating plates are wound with electric heating wires; and small porcelain tubes are sleeved outside the electric heating wires so as to achieve electric insulation under high temperature. A space for arranging heating elements is compact, and more heat exchange surfaces can be arranged in the efficient space, so heat leakage is reduced to minimum so as to achieve the electric insulation of the heating elements under high temperature and achieve high-power heating so that the heating surfaces can reach high heat flow density.

A thermal paid having a high temperature side located nearest a source of heat and a low temperature side. The thermal panel includes a corrugated composite material core having hot side ridges and cold side ridges. A hot side skin is attached to the hot side ridges to form a plurality of first cells. A cold side skin is attached to the cold side ridges to form a plurality of second cells. The first cells and second cells are substantially filled with an insulating material that has a thermal conductivity which is lower than the thermal conductivity of the composite material.

A double-vacuum-layer ceramic composite vacuum heat-insulation plate with the edge sealed by a seal strip comprises a face plate, a connecting layer and a vacuum cavity and is characterized in that the face plate is a ceramic plate or is made of ceramic tiles, the vacuum cavity is a closed cavity formed by welding a low-carbon steel plate and sealing the edge by utilizing a glass solder under the constant pressure and high temperature and performing high-temperature sealing under the vacuum condition, the seal strip is arranged at the welding position of the edge portion of the low-carbon steel plate, and the low-carbon steel plate is matched with the coefficient of thermal expansion of the glass solder. The sealing is automatic sealing performed by utilizing an air exhaust opening pre-formed in the vacuum cavity and a low-temperature solder in a vacuum furnace according to a liquid seal principle, a partition plate is arranged in the vacuum cavity and divides the vacuum cavity into two to form double vacuum layers, and supports are arranged in the vacuum layers. A manufacturing method of the double-vacuum-layer ceramic composite vacuum heat-insulation plate is simple in process, the manufactured double-vacuum-layer ceramic composite vacuum heat-insulation plate can overcome the shortcomings of existing heat preservation plates and vacuum heat-insulation plates, and strength and heat-insulation, sound-insulation and fireproof performance can be improved.

A shoe for ski boots, including a breathable portion with a first outer layer, suitable to interface with an inner wall of an associable ski boot, and a second inner layer, at least partially overlapped and fastened to the first outer layer, said layers being at least partially pierced and comprising through holes through the same layers is provided. Advantageously, at overlapped portions of the first and second layer, the relevant holes, of the first and second layer are aligned with each other to completely pass through the succession of said layers of the breathable portion. At an inner side of the shoe, the shoe comprises a waterproofing portion shaped to allow the exit of vapour or water towards the outside of the shoe and of the containment volume and so as to prevent the entry of water or vapour from the outside of the shoe within said containment volume.

The invention discloses an efficient energy-saving aluminum-clad copper steam generator, and aims to solve the problems of high cost, high heat emission to the environment and high energy consumptionof a steam generator of a garment steamer. The steam generator comprises a steam generator body, a heating cavity is formed in the steam generator body, a steam outlet is formed in the upper end of the steam generator body, a drain outlet is formed in the lower end of the steam generator body, and a water inlet nozzle communicating with the heating cavity is formed in the steam generator body. Thesteam generator body comprises a copper inner sleeve and an aluminum outer sleeve wrapping the copper inner sleeve, and an electric heating wire is installed between the copper inner sleeve and the aluminum outer sleeve. According to the efficient energy-saving aluminum-clad copper steam generator, the cost is greatly reduced, heat emission to the environment is low, energy consumption is reduced, and high efficiency and energy conservation are achieved.

The invention discloses an inorganic functional slurry with ultrahigh weather resistance, low light transmittance and high heat insulation. The inorganic functional slurry comprises 0.1-3 wt% of a dispersant, 10-30 wt% of a high-weather resistance and low-light transmittance inorganic heat insulation pigment nano-powder having an average particle size of 40 nm or below, and 67-89.9 wt% of a solvent. The slurry has the advantages of high clearness, ultrahigh weather resistance, low light transmittance, high heat insulation and high ultraviolet barrier, and can be widely applied to the fields ofcoatings, inks, window films, textiles, plastic plates, plastic greenhouses and glass laminated films. The invention also relates to a preparation method of the inorganic functional slurry with ultrahigh weather resistance, low light transmittance and high heat insulation.

The invention belongs to the field of industrial solid waste resource comprehensive utilization and particularly relates to an environment-friendly foamed ceramic insulation plate prepared by utilizing electrolytic manganese residues and a preparation method thereof. The foamed ceramic insulation plate is prepared from the following raw materials in percentage by mass: 30-65 percent of electrolytic manganese residues, 20-35 percent of sodium-potassium feldspar, 10-25 percent of kaolin, 5-10 percent of talc powder, 0.5-1.5 percent of desoxidant and 0.05-0.10 percent of a reducing agent. According to the foamed ceramic insulation plate, industrial waste residues electrolytic manganese residues are used as a main raw material, resource utilization for manganese residue waste can be realized, and the electrolytic manganese residues have high utilization and high additional value. The foamed ceramic insulation plate prepared by the method has a fine and uniform closed-cell structure, and has the excellent characteristics of light weight, heat insulation, sound isolation, flame retardance, corrosion resistance and the like.

The preparation method of the fly ash energy-saving brick comprises the following steps: (1) using a high-humidity material dryer to dry biological sludge and river bottom sludge; (2) taking the dried biological sludge and The river bottom mud is mixed with fine sand, fly ash and shale, and the mixing time is 10-20 minutes to make a dry mixture; (3) The dry mixture is conveyed to the pressure molding machine by an empty feeder for extrusion molding, Cut into bricks, put them into a wheel kiln, and after drying, fire them at high temperature to make finished products. The invention can effectively utilize solid waste such as sludge and fly ash, and can produce energy-saving sintered bricks with excellent performance, and the obtained products have light weight, sound insulation, heat insulation, heat preservation, and radioactive indicators are lower than national standards, and are suitable for building energy-saving bricks. The characteristics of large-scale buildings; it has the advantages of short production cycle, low production cost, simple process, energy saving, soil saving, SO2 and other waste gas emissions, and clean production.