55results about How to "Guaranteed Thermal Performance" patented technology

The invention belongs to the technical field of architectural decoration, and discloses an external heat insulating system of an external wall thinly plastered with a polyphenyl plate and a construction method thereof. The external heat insulating system of the external wall thinly plastered with the polyphenyl plate comprises the polyphenyl plate, a protecting layer and a finishing coat which are arranged on the foundation wall body sequentially; a gap is reserved between two adjacent heat insulating plates; air exhaust grooves with openings towards the foundation wall body are arranged in the gaps, and the air exhaust grooves at the intersecting part of the gaps are communicated with each other; the back of the air exhaust groove is provided with a filler; and the air exhaust groove is provided with vents so that the air exhaust groove is communicated with the gap between the polyphenyl plate and the foundation wall body. The external heat insulating system of the external wall has the advantages that hydrosphere inside a building can be released to the atmosphere in time, so as to avoid vapor from condensing between the polystyrene heat insulating plate and the wall body, and between the heat insulating layer and the protecting layer; the finishing coat is effectively prevented from frothing and cracking; and the thermal performance of the external heat insulating system is ensured.

The invention relates to a graphite-metal heat conduction composite material and a preparation method thereof. The graphite-metal heat conduction composite material comprises a metal base body and a graphite composite body distributed in the interior and/or the surface of the metal base body. The graphite composite body comprises graphite particles, a carbide layer and a carbide forming element layer, wherein the carbide layer is combined to the surfaces of the graphite particles, and the carbide forming element layer is combined to the surface of the carbide layer; carbide forming elements comprise B, Si, Cr, W and Mo; carbides comprise a boron carbide, a silicon carbide, a tungsten carbide, a chromium carbide and a molybdenum carbide; and the graphite composite body is combined with the metal base body through the carbide forming element layer. The composite material has the excellent performance and is widely applied.

The invention provides a copper-plated graphite film reinforced copper-based laminated block composite material and a preparation method thereof. The composite material is the laminated block composite material composed of a copper-plated graphite film and a copper foil. The preparation method of the copper-plated graphite film adopts improved electroless plating to obtain a coating with good bonding and being controllable and uniform and clean; and the preparation method of the composite material adopts vacuum hot pressing sintering, so that requirements on equipment are low, and the operation is simple. The thermal conductivity of the composite material prepared by the preparation method exceeds 1000 W/(m.K), a coefficient of thermal expansion can be lower than 10 ppm/K, and the composite material is a promising thermal management material with both bending strength and advantages of metal materials and graphite materials.

The invention belongs to the technical field of organic compounds, and relates to a diacid monomer containing a diphenylamine-fluorene structure, a preparation method and application thereof for preparing polyamide with the electrochromism performance. The synthetic method comprises the two steps that 2-aminofluorene with a substituent group at the bit 9 and p-fluorobenzonitrile are subjected to a nucleophilic substitution reaction under the effect of cesium fluoride to obtain a nitroamiline compound containing the diphenylamine-fluorene structure; then, under the effect of potassium hydroxide, basic hydrolysis is performed to obtain the diacid monomer containing the diphenylamine-fluorene structure. The diacid monomer and various diamine monomers are subjected to a reaction to obtain polyamide with the electrochromism performance. Due to the specific structure of the diacid monomer, the obtained polymer has the good solubility and unique photoelectric property; the diacid monomer and the polyamide prepared by the diacid monomer have the huge application prospect in the fields such as electrochromism.

The invention relates to a novel light aggregate concrete building block and a using method thereof. The building block comprises a light aggregate concrete small-sized cavity block provided with a cavity bore. The building block is characterized in that: an insulation board is inserted into the cavity bore. The novel light aggregate concrete building block has the advantages of high strength, high thermal insulation performance, capability of consuming local waste, convenient transportation and masonry, and fewer common faults of wall quality, is the novel wall building block, is suitable for large-scale popularization and application, and has obvious economic benefit.

A liquid-cooled LED (light-emitting diode) lamp comprises a lampshade, a light source component and a radiating device. The lampshade covers a radiator and encloses a sealed space, the light source component is contained in the sealed space, the radiating device comprises a heat conductor, a radiator and radiating fins, the light source component is fixedly arranged in the heat conductor, the lampshade is connected with the radiator, the radiator is provided with a containing cavity filled with radiating liquid, the heat conductor is hermetically connected with the containing cavity, at least part of the heat conductor is inserted into the containing cavity, and the radiating fins are arranged on the radiator. As the radiating liquid is high in uniformity and heat capacity, heat generated by an LED bulb in operation can be uniformly absorbed by the radiating liquid, and damage to the LED lamp caused by incapability of dissipating a large amount of heat in a short time due to small heat capacity is avoided.

The invention relates to the inversion power module and particularly relates to a three-phase inversion power module based on a two-way spiral flow channel water cooling heat radiation substrate. The three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate solves problems that a present heat radiation flow channel is not reasonable, poor in heat radiation, big in size and weight and not easy to perform fast plug-pull installation. In the scheme of the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate, a three-phase inversion power circuit is arranged on the two-way spiral flow channel water cooling heat radiation substrate; a T-shaped composite mother board and a drive board are stacked on the two-way spiral flow channel water cooling heat radiation substrate; a support seat is arranged in the front edge of the two-way spiral flow channel water cooling heat radiation substrate; water connectors and fixed blocks are arranged on two sides of the two-way spiral flow channel water cooling heat radiation substrate; and screw rods and a handle go through the fixed blocks. The advantages of the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate has advantages that flow resistance of a cooling liquid is small and heat radiation is uniform; the water connectors are easy to mount and dismount without affecting processing accuracy; and the layout is not affected by the flow channel; circuit electric inductance is small and working reliability of a thermal performance power module is high. Furthermore, the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate is compact in layout, small in volume and light in weight, saves cost; the interfaces are preposed in sequence, which is easy to maintain and saves external fast connection device; and a driving signal is high in anti-interference.

The invention provides a thermal superconducting plate and a thermal superconducting heat sink. A plurality of mutually independent closed cavities is formed in the thermal superconducting plate, andeach of the closed cavities is extended from one side of the thermal superconducting plate to the opposite side, and is internally provided with a thermal superconducting heat transfer channel which is filled with a heat transfer working medium. The thermal superconducting plate is internally provided with a plurality of mutually independent closed cavities to form a plurality of mutually independent thermal superconducting heat transfer channels, even though one thermal superconducting heat transfer channel generates the problem of leakage of the heat transfer working medium, the normal heatdissipation of the other thermal superconducting heat transfer channels cannot be influenced, the heat dissipation performance of the thermal superconducting plate is ensured, and the reliability of the thermal superconducting plate is improved.

The invention provides a polyimide precursor, a polyimide film, a preparation method of the polyimide film and a display device; the polyimide precursor is synthesized in ionic liquid by using sulfonated diamine, dianhydride and hydrophilic nano silicon dioxide, and the polyimide film containing nano silicon dioxide is prepared by using the polyimide precursor. The polyimide film has good mechanical properties and heat resistance, the 1% thermal weight loss temperature is 430-540 DEG C, the glass transition temperature is 330-480 DEG C, the tensile strength is 220-450 MPa, the transmittance at400 nm is 60-86%, and an effective solution is provided for the defects of polyimide as a transparent substrate or a transparent cover plate at the present stage.

The invention relates to a blank formula of a fuse ceramic shell using a waste material recycled from isostatic pressing electroceramics and a preparation method thereof. The blank comprises following components in parts by mass: 85-90 parts of waste material recycled from isostatic pressing electroceramics, 10-15 parts of feldspar, 0.3-0.5 part of water reducing agent and 0.8-1.2 parts of additive. The fuse ceramic shell is prepared from the raw materials through steps of grinding, sieving, deironing and so on. Due to adoption of the waste material recycled from isostatic pressing electroceramics, the water reducing agent and additive as well as the feldspar as the fluxing agent, the performance of the ceramics is effectively guaranteed, the costs of the raw materials and manufacture are lowered, the performance requirements of the ceramics are met, and excellent effects of the ceramics are achieved.

The invention discloses an integral double-pressure-bearing solar water heater which comprises a support, a water tank shell, a thermal insulating layer, a heat exchange jacket, a heat-conducting interfacial packing layer and an inner heat storage container, wherein a short heat-exchange working medium circulating tube used for connecting a pressure-bearing solar vacuum heat collecting tube is arranged on the heat exchange jacket, the heat exchange jacket is provided with a heat-exchange working medium filling port and a heat-exchange working medium overflow port, and the heat-exchange working medium circulating tube communicates the pressure-bearing solar vacuum heat collecting tube and an cavity of the heat exchange jacket. A cold water inlet tube and a hot water outlet tube are connected on the inner heat storage container. The heat exchange jacket is tightly attached too the inner heat storage container through the heat-conducting interfacial packing layer. Heat collection and heat storage of the integral double-pressure-bearing solar water heater provided by the invention respectively and independently operate in a closed type, use water is used by bearing pressure, the use water can not be polluted due to the seepage of a heat exchange working medium, the use water is sanitary, and the system is safe and reliable. The entire system has reasonable structural design, low cost, high cost performance and long service life.

The invention provides a network signal transmitter-receiver set comprising a shell, an antenna connected with the shell, and a main board installed in the shell, wherein a wifi module is integrated on the main board, the antenna is connected with the wifi module, and a plurality of heat dissipation holes are formed in the upper end face of the shell. The network signal transmitter-receiver set also comprises an installation board extending leftwards and rightwards, bristles fixed on the lower end face of the installation board, and support boards fixed on left and right sides of the shell, wherein the installation board is positioned on the upper side of the shell, the lower end of the bristles are in contact with the upper end face of the shell, and the installation board can move horizontally in forward and backward directions; sliding blocks are fixed on left and right sides of the installation board, sliding chutes extending in forward and backward directions are formed on the inner sides of the support boards, and the sliding blocks are matched with the sliding chutes. In the network signal transmitter-receiver set, the installation board moves horizontally in forward and backward directions, so as to drive the bristles to move in forward and backward directions, so that dust accumulated on the upper end face of the shell is automatically cleared away, the heat dissipation holes are effectively prevented from being blocked by the dust, and thus the heat dissipation performance of the network signal transmitter-receiver set is ensured.

The invention discloses a preparation method of a cement-based paraffin phase change energy storage material, which comprises the following steps: emulsifying paraffin, uniformly dispersing the emulsified paraffin with small particle size in water to prepare an oil-in-water emulsion with stable performance, diluting the emulsion, compounding the diluted emulsion with a cementing material, adding a water reducing agent to improve the flowability of the phase-change energy storage material, and packaging the phase change material through hydration hardening of the cementing material, so as to prepare the phase change energy storage material. The phase change material in the cement-based phase change energy storage material prepared by the invention is uniform in dispersion, excellent in mechanical and thermal properties, good in packaging effect and excellent in durability.

The invention discloses a case. A first containing cavity and a second containing cavity are arranged in the case. The case comprises a partition board located between the first containing cavity and the second containing cavity, the first containing cavity is used for holding a first module, the second containing cavity is used for holding a second module, and the partition board is provided with a ventilation hole for communicating the first containing cavity with the second containing cavity. The case further comprises a wind shielding plate connected to the partition board in a sliding mode, the wind shielding plate is used for shielding the ventilation hole when the second module leaves the second containing cavity, and when the second module is inserted into the second containing cavity, the second module drives the wind shielding plate to slide relative to the partition board to leave the ventilation hole. The invention further provides a communication product. According to the case and the communication product, air return can be prevented, and radiating performance of the case is guaranteed.

The invention discloses a high-temperature-resistant anti-corrosion air inlet manifold sealing ring material. The material is prepared from the following raw materials: polyaryl ether nitrile, china stone powder, fluoroether rubber, a flame retardant, polyphosphazene, a surfactant, a plasticizer, a catalyst, a vulcanization accelerator, a vulcanizing agent, a stabilizer, xanthorrhoea australis gum, tung oil calcium rosinate, tremolite asbestos, barium sulfate, serpentine powder, nano zinc oxide, konjac glucomannan and phthalocyanine resin. The high-temperature-resistant anti-corrosion air inlet manifold sealing ring material is prepared by taking the polyaryl ether nitrile and a fluorine ether rubber matrix as main raw materials, rubber and plastic blending is adopted, and auxiliary raw materials such as the tremolite asbestos, the barium sulfate, the serpentine powder, a cross-linking agent, a coupling agent and the like are added, so that the prepared air inlet manifold sealing ringmaterial has composite functions such as flame retardancy, high-temperature resistance, corrosion resistance and the like, production cost is saved, and the material can be popularized and used in a large scale.

The invention relates to the technical field of sofa cloth and particularly relates to warm-keeping sofa cloth. The warm-keeping sofa cloth is woven by virtue of warp yarns and weft yarns, wherein the warp yarns are formed by blending polyester yarns, spandex yarns and cotton yarns, and the weft yarns are formed by blending aramid yarns, the cotton yarns and acrylic yarns; and the mass ratio of the polyester yarns to the spandex yarns to the cotton yarns in a unit length of the warp yarn is 1 to 1 to 3, the mass ratio of the aramid yarns to the cotton yarns to the acrylic yarns in a unit length of the weft yarn is 1 to 4 to 2, and the surfaces of the warp yarns and the weft yarns are adhered with nano-activated carbon particles. According to the warm-keeping sofa cloth, by reasonably blending the yarns, the firmness of the yarns can be guaranteed, and the warm-keeping performance of the yarns can be guaranteed; and meanwhile, the surfaces of the yarns are adhered with the nano-activated carbon particles, and therefore, the roughness of the surfaces is formed, so that the contact area between the yarns and a human body is greatly reduced, and the warm-keeping sofa cloth has no ice-cold feel and has relatively good warm-keeping performance and warmness.

The invention relates to a poly (cyclohexene carbonate) copolymer and a preparation method thereof, the poly (cyclohexene carbonate) copolymer is a B-(AB) n type segmented copolymer composed of a chain segment A and a chain segment B, and n = 1, 3 or 5; the chain segment A is a biodegradable aliphatic polyester chain segment, and the chain segment B is a polycarbonate cyclohexene ester chain segment; the chain segment B is formed by carrying out copolymerization reaction on carbon dioxide and 1, 2-cyclohexene oxide by taking biodegradable aliphatic polyester C with double-side active terminals (double-side hydroxyl or double-side carboxyl) as a macromolecular chain transfer agent; according to the preparation method, the chain segment B is synthesized in a block polymerization mode of adding the macromolecular chain transfer agent for K times, and the poly (cyclohexene carbonate) copolymer is obtained. According to the invention, the problem that the thermal performance of the material is deteriorated while the toughness of the polycarbonate cyclohexene ester is improved in the prior art is effectively solved.

The invention discloses a refrigerator, comprising a refrigerator body and a stopping part; the stopping part is arranged on the refrigerator body; one end of the stopping part is suitable for being abutted against a wall, so a gap is remained between the refrigerator body and the wall. According to the refrigerator disclosed by the embodiment of the invention, one end of the stopping part arranged on the refrigerator body can be abutted against the wall, so a space is remained between the refrigerator body and the wall, and the refrigerator is enabled to have a certain radiating space, the radiating performance of the refrigerator is ensured and the refrigerating effect of the refrigerator is guaranteed.

The invention discloses a heat dissipation device with efficient heat dissipation performance for a computer mainboard. The device comprises a mounting frame, blowers fan and exhaust fans. Two air blowing pipelines and three air draft pipelines are arranged on the mounting frame, the air draft pipelines are distributed on the two sides of the air blowing pipelines, the blowers are fixedly installed in the air blowing pipelines, the exhaust fans are fixedly installed in the air draft pipelines, air guide covers are fixedly installed at the tops of the air draft pipelines, and the ends, away from the air draft pipelines, of the air guide covers are communicated with one ends of small air pipes. According to the heat dissipation device for the brain main board, air is blown through the blowers, heat of a computer main board is taken away along with air, the heat near the computer main board is pumped out of a computer through the exhaust fans, and the heat dissipation performance of the computer main board is guaranteed.