131results about How to "Reduce through" patented technology

The invention relates to the technical field of photovoltaic module packaging adhesive films, in particular to a three-layer co-extrusion composite adhesive film for packaging a photovoltaic module and a preparation method thereof. The composite adhesive film comprises EVA layers, a POE anti-polarization layer and an EVA layer which are sequentially arranged from top to bottom, wherein EVA resin has a melt flow rate of 5 g/10 min-30 g/10 min, light transmittance of larger than 85%, volume resistivity of larger than or equal to 1.0 * 10<14>, melting temperature of 30-80 DEG C, and VA content of5-30%; POE resin has a melt flow rate of 3 g/10 min-20 g/10 min, light transmittance of greater than 86%, volume resistivity of greater than or equal to 1.0 * 10<15> and melting temperature of 30-80DEG C. The EVA layers are adopted on the two sides of the composite adhesive film, the compatibility of the EVA layers and polar auxiliaries is good, and the problems of bubbles, slippage and piece combining during assembly laminating can be solved.

The invention provides a drum-shaped evaporator and a cabinet air conditioner with the drum-shaped evaporator. The drum-shaped evaporator comprises a drum-shaped evaporator body, one of the inner circumference side and the outer circumference side of the evaporator body is the air inlet side, and the other is the air outlet side. The cabinet air conditioner comprises a casing, the upper portion of the casing is provide with an air outlet, the lower portion of the casing is provided with an air inlet, and the drum-shaped evaporator located between the air inlet and the air outlet is further arranged in the casing in the vertical direction. By arranging the evaporator into the drum shape, enabling one of the inner circumference side and the outer circumference side to be the air inlet side and enabling the other to be the air outlet side, even if air flow flows into the drum-shaped evaporator from the periphery of the drum-shaped evaporator or flows out of the drum-shaped evaporator to the periphery of the drum-shaped evaporator, a heat exchange area between the air flow and the evaporator is the whole circumference, the heat exchange area of the evaporator is effectively enlarged, the speed of the air flow penetrating through the evaporator is reduced, the air flow and the evaporator perform heat exchange fully, and the heat exchange effect is improved.

The invention provides a carbazole-containing compound and an organic electroluminescent device thereof, and belongs to the technical field of organic photoelectric materials. In order to improve theluminous efficiency of the device and prolong the service life of the device, the carbazole-containing compound provided by the invention has high temperature resistance and ultraviolet light resistance, has good film stability and durability when being used as a covering layer, can effectively reduce the adverse effect of ultraviolet light in sunlight on organic materials in the device, thereby delaying the aging of the organic material and further prolonging the service life of the device; meanwhile, the carbazole-containing compound has a high refractive index, so that total reflection of light in the device can be reduced, and the luminous efficiency of the device is further improved. Therefore, the carbazole-containing compound provided by the invention is an OLED material with excellent performance.

The invention discloses an electrolyte diaphragm for a vanadium cell and a preparation method thereof. The method comprises the following steps of: (1) soaking a porous polyfluortetraethylene film in a mixed liquid consisting of methanol and water to obtain a mixed liquid I; and (2) uniformly mixing the mixed liquid consisting of methanol and ethyl orthosilicate with the mixed liquid I obtained in the step (1), reacting, taking an obtained porous polyfluortetraethylene film out after reacting, drying in vacuum, and soaking into a proton conductive polymer solution to obtain the electrolyte diaphragm for the vanadium cell. In the electrolyte diaphragm for the vanadium cell provided by the invention, the using amount of the proton conductive polymer with high price is reduced on the whole, and the cost of the electrolyte diaphragm is lowered; and nano-silicon dioxide is added, so that the pore diameter structure of an ion film can be effectively controlled, the permeation of vanadium ions is reduced, and the conservation of cell capacity is facilitated.

The invention belongs to the technical field of building materials and in particular relates to a PVA-ECC (Polyvinyl Acetate-Engineered Cementitious Composite) high-toughness fiber cement based composite material and a preparation method thereof. The PVA-ECC high-toughness fiber cement based composite material is prepared from the following components in parts by weight: 25 to 35 parts of 525 white cement, 40 to 60 parts of quartz sand, 18 to 20 parts of titanium white, 1 to 10 parts of pitchstone vitrified microspheres, 0.5 to 2 parts of PVA cellulose, 6 to 8 parts of ionic liquid, 10 to 12 parts of crop straw powder, 3 to 6 parts of clay, 3 to 5 parts of diatomite, 3 to 5 parts of maleic anhydride, 1 to 3 parts of crystal whiskers, 3 to 6 parts of a silane coupling agent, 0.5 to 2 partsof cellulose ether, 0.3 to 2 parts of redispersible latex powder, 0.1 to 3 parts of a high-efficiency water reducing agent, 0.5 to 2 parts of an inorganic pigment and 90 to 100 parts of water. The preparation method comprises the following steps: taking the maleic anhydride, the clay, the diatomite and the PVA cellulose as raw materials to prepare a PVA fiber/clay/diatomite nano composite material, and then mixing and stirring the PVA fiber/clay/diatomite nano composite material with other raw materials.

The invention relates to a graphene-containing vanadium dioxide composite powder and a preparation method and application thereof. The graphene-containing vanadium dioxide composite powder consists ofcore-shell particles and graphene dispersed between the core-shell particles, each core-shell particle consists of a vanadium dioxide particle and metal, the metal wraps the surface of the vanadium dioxide to form a metal shell, and the mass ratio of the vanadium dioxide particles, the metal and the graphene is (70 to 98) to (1 to 20) to (1 to 10). Through the synergistic effect of the metal shells and the graphene of the graphene-containing vanadium dioxide composite powder, the high conductivity of the graphene-containing vanadium dioxide composite powder can be achieved, and the electron transfer capability and infrared transmission and reflection capability of the graphene-containing vanadium dioxide composite powder are increased. When temperature increases, plasma resonance is generated inside the vanadium dioxide particles, a conductive network formed by the vanadium dioxide particles, the metal shells and the graphene carries out the total reflection of infrared light, at themoment, the transmission and absorption of infrared rays can be greatly reduced, consequently, temperature rise is decreased, and the objective of energy saving is achieved.

The invention discloses smearing type intradermal injection capable of directly reaching the dermis layer and a preparation method thereof. The smearing type intradermal injection comprises, by weight, 10-30 parts of hyaluronic acid and 10-30 parts of collagen. The smearing type intradermal injection has the advantages that the smearing type intradermal injection is high in activity, appropriate in component and reasonable in combination, the smearing type intradermal injection can permeate the epidermis to reach the dermis layer when the smearing type intradermal injection is applied to the face or smeared to the epidermis of the skin, the hyaluronic acid and collagen lost due to aging are injected to allow the skin to absorb and store moisture with the weight being 1000 times of the weight of the skin, the regenerative function of cells is awakened, the withered and fractured cells of the skin are repaired again, the compact, smooth and elastic skin can be achieved again in a short time, effects of removing yellowness and whitening and resisting wrinkles and tightening the skin are achieved, the skin can restore elasticity, be transparent, bright and compact and form a moisture shield, different mechanisms are coordinated to bring an anti-ultraviolet effect into play, ultraviolet permeation can be reduced, the skin damage caused by the ultraviolet can be repaired, dual-protection and a good effect are achieved, and the smearing type intradermal injection has a quite good anti-allergic function.

The invention discloses a structure of self-fit splicing for assembled walls. The structure comprises self-fit keels which are strip profiles; the self-fit keel comprises a base board and two wing boards installed at two sides of the base board; the base board, in the length direction, is provided with a projection trip protruding from the base board and a groove recessing in the base board; the self-fit splicing structure is provided with two identical self-fit keels which are vertically arranged between adjacent wall units, wherein one self-fit keel is embedded in one wall unit and the other one is horizontally rotated for 180 DEG and embedded in adjacent wall unit; the projection strip and groove of each self-fit keel are spliced with the groove and projection strip of another self-fit keel to form a self-fit splicing structure. The invention also discloses a method for splicing the above structure. The method comprises following steps: the self-fit keels are embedded and spliced. The invention relates to the field of buildings and provides a self-fit connecting structure for assembled walls, aiming at achieving better sealing performance and convenient splicing among assembled walls.

The invention relates to a polymer-based composite structure diffuse reflection material. The material is characterized in that: the diffuse reflection material, which is formed by multi-layer structures, comprises a microstructure surface layer material, a single layer or multi-layer intermediate material and a reflecting layer material. Specifically, the surface microstructure is a microlens array having a linear or non-linear geometrical characteristic; and the surface microstructure is in a microgroove type, a ball type, an ellipsoid type, a polygonal type, a paraboloidal type, a hyperboloidal type or a combined type. According to the invention, the prepared diffuse reflection high polymer material with the composite structure has advantages of high reflectivity and good diffuse reflection effect.

The invention relates to a high-impermeability cement-based composite material and a method for preparing the same. The high-impermeability cement-based composite material comprises, by weight, 20-30parts of 525 white cement, 40-60 parts of quartz sand, 18-20 parts of titanium dioxide powder, 10-12 parts of fly ash, 5-15 parts of chitosan nanogel, 3-5 parts of polyacrylate emulsion, 1-10 parts ofpitchstone vitrified micro-spheres, 0.5-2 parts of PVA (polyvinyl alcohol) celluloses, 6-8 parts of ionic liquid, 10-12 parts of crop straw powder, 3-6 parts of clay, 3-5 parts of diatomaceous earth,3-5 parts of maleic anhydride, 1-3 parts of whiskers, 3-6 parts of silane coupling agents, 0.5-2 parts of cellulose ether, 0.3-2 parts of redispersible latex powder, 0.1-3 parts of superplasticizers,0.5-2 parts of inorganic pigment and 60-70 parts of water. The method includes preparing composite materials from the maleic anhydride, the clay, the diatomaceous earth and the PVA celluloses; mixingand stirring the composite materials and other raw materials with one another to obtain the high-impermeability cement-based composite material which is a product.

The invention relates to a method for synthetizing carbon-doped monoclinic phase mesoporous bismuth vanadate. The method comprises the steps of mixing silica aerogel microspheres, glucose and water according to the mass fraction ratio of 1 to (0.02-0.2) to (20-200), drying to obtain a compound as a template; taking nitric acid, ethanol and bismuth nitrate according to the mass fraction ratio of 1 to 15 to 0.5, and carrying out ultrasonic treatment to obtain bismuth nitrate solution; taking nitric acid, ethanol and ammonium metavanadate according to the mass fraction ratio of 1 to 15 to 0.125, and carrying out ultrasonic treatment to obtain ammonium metavanadate solution; slowly dripping the ammonium metavanadate solution into the bismuth nitrate solution to obtain a mixed solution; adding the template to the mixed solution, vacuuming to fully inject the mixed solution into the template, and reacting for 6-24 hours at 60-110 DEG C to obtain a solid product; heating the solid product to 200-600 DEG C at the heating speed of 0.5-10 DEG C.min<-1> in a tube furnace under the protection of nitrogen, and keeping constant temperature for 0.5-5 hours; and naturally cooling to room temperature and then removing the silica aerogel microspheres by sodium hydroxide solution to obtain carbon-doped monoclinic phase mesoporous bismuth vanadate. Carbon-doped monoclinic phase mesoporous bismuth vanadate disclosed by the invention has good photocatalytic performance within the range of a visible light.

The invention relates to a multi-layer thermal insulation element for thermally insulating a battery, comprising a first cover layer, a second cover layer and a compressible and/or flexible intermediate layer arranged between the cover layers, said intermediate layer having at least one heat-resistant fiber layer, wherein the fiber layer is formed from a needled nonwoven fabric and/or wherein thecover layers are flexurally weak and the thermal insulation element is overall compressible and flexible.

The invention discloses a composite steel fireproof roller shutter door, and relates to the technical field of fireproof roller shutter doors. According to the technical scheme, the composite steel fireproof roller shutter door is characterized by comprising a door frame and a shutter plate, wherein a reel is rotatably connected to the upper end of the door frame; the upper end of the shutter plate is fixedly connected to the reel; guide grooves allowing the two ends of the shutter plate in the horizontal direction to be embedded and move are formed in the opposite inner sides of the door frame in the vertical direction; fireproof sealing pieces are arranged on the inner side walls of the guide grooves; each fireproof sealing piece comprises a fireproof sealing strip and a fireproof air bag; the fireproof sealing strip is arranged on the inner side wall of the corresponding guide groove in the vertical direction; the section of the fireproof sealing strip is in a U shape; the fireproofair bag is arranged in a U-shaped cavity of the fireproof sealing strip; and sodium bicarbonate is arranged in the fireproof air bag. The fireproof sealing pieces are arranged, when fire is close tothe fireproof roller shutter door, the fireproof air bags are heated to expand, so that the fireproof sealing strips are tightly attached to the end face of the shutter plate, the sealing performanceof the shutter plate and the guide grooves is enhanced, thus smoke penetrating from the two sides of the roller shutter door is reduced, and the smoke isolation effect is enhanced.

The invention relates to a permanent magnet auxiliary synchronous reluctance type motor rotor structure. A rotor core is provided with a plurality of U-shaped grooves, wherein the inner layer and theouter layer of each U-shaped groove are correspondingly arranged; each inner-layer U-shaped groove is divided into two L-shaped grooves through a reinforcing rib; every two outer-layer U-shaped grooves form a group and are arranged corresponding to one inner-layer U-shaped groove to form a magnetic space; and the inner U-shaped groove and the outer U-shaped groove are respectively provided with asecond permanent magnet and a first permanent magnet which are biased leftwards, so that the flux linkage of the rotor deviates, and the second permanent magnet of the inner U-shaped groove plays a role in magnetic conduction and corrects the deviation angle of the magnetic line of force passing through the first permanent magnet. The torque of the permanent magnet is improved, and the lengths andthe widths of the first permanent magnet and the second permanent magnet are the same, so that the utilization rate of the permanent magnets is increased, magnetic lines of force are gathered to theleft side, the offset of a rotor flux linkage is achieved, the reluctance torque is increased, and the material cost of the motor can be greatly reduced under the same torque requirement.

The invention relates to a bearing structure. It is characterized in that the dust-proof cover is insulated from the outer ring, and an electrostatic dust-absorbing device is provided on the dust-proof cover, and the electrostatic dust-absorbing device includes an electrostatic brush and an electrostatic dust-absorbing net. There are bristles in contact with the electrostatic dust collection net, and the electrostatic brush is connected with the inner ring. In the present invention, by adopting the above technical scheme, the dust cover has no contact with the inner ring or outer ring of the bearing, and has no influence on the normal operation of the bearing. The bearing and the dust cover are insulated and matched, so static electricity can be generated by friction on the dust cover. When the electrostatic device works through the bearing, the inner ring rotates. The brushes fixed on the inner ring and the electrostatic dust collection net on the dust cover rub each other to generate static electricity. The friction between the bristles and the electrostatic dust collection net is very small and can be ignored. Regardless, the generated static electricity absorbs nearby dust, reducing the probability of dust passing through the gap between the dust cover and the bearing, and the dustproof effect is good.

The invention discloses a drying-pyrolysis integrated vertical furnace. According to the vertical furnace, a 3-30 section three-dimensional space inner baffled (in the shape of continuous S) operation conveyor belt is used as a material conveying device, high-temperature gas (or high temperature flue gas) is used as a gas heat carrier for multiple-step staggered countercurrent-type heat exchange with material coal or biomass, and drying, low temperature pyrolysis and medium-high temperature pyrolysis of the material coal or biomass are realized from top to bottom step by step through bottom-to-top temperature gradient of the gas heat carrier. The vertical furnace has a wide material particle size application range, realizes drying-pyrolysis integration of the material coal or biomass in the same furnace, effectively uses flue gas produced by material coal or biomass pyrolysis to cool hot semicoke at the outlet of the vertical furnace or to adjust and control the temperature of the gas heat carrier, improves a thermal energy utilization rate of the vertical furnace, has a simple design, can be flexibly and simply operated, realizes a low investment cost and is easy to industrialize.

The invention relates to the technical field of photovoltaic module packaging adhesive films, in particular to a multilayer coextruded anti-polarization composite adhesive film. The composite adhesivefilm comprises a POE layer, an anti-polarization layer and an EVA layer arranged from top to bottom sequentially. After adoption of the structure, the composite adhesive film has the benefits as follows: 1, the EVA layer making contact with a battery surface has better compatibility with a polarity aid, and bubble, non-melting and piece combining problems during module lamination can be solved; 2, ethylene segments contained in copolymer resin in the anti-polarization layer have better compatibility with POE and EVA, and higher surface bonding can be formed; besides, acrylate has higher polarization performance, and negative voltage values produced by modules through outer frames can be reduced, so that the anti-PID performance of modules is improved; 3, the POE layer making contact witha back plate and glass has better vapor barrier performance, the light transmittance and volume resistivity of the adhesive film can be increased, thus, electric potential on battery pieces can be increased, the power generation efficiency of the modules can be improved, and the service life of the modules can be prolonged.

The invention relates to graphene-containing heat-insulating energy-saving composite powder, and a preparation method and application thereof. The graphene-containing heat-insulating energy-saving composite powder comprises nuclear shell particles and graphene dispersing among the nuclear shell particles. The nuclear shell particles comprise infrared high-reflectivity particles and metal. The metal covers the infrared high-reflectivity particles to form metal shells. The mass ratio of the infrared high-reflectivity particles, the metal to the graphene is (70-98):(1-20):(1-10). The graphene-containing heat-insulating energy-saving composite powder has the advantages that high electric conductivity of the graphene-containing heat-insulating energy-saving composite powder can be realized, and electric transmission ability and infrared-ray reflection ability of the composite powder can be improved; total reflection, not normal diffuse reflection, of an electricity-conducting network, formed by the infrared high-reflectivity particles, the metal shell and the graphene, to infrared rays can be realized, absorption and transmission of base materials to the infrared rays can be reduced remarkably, and accordingly, the objectives of temperature rise reduction and energy conservation are achieved.

The invention relates to an electrode applied to an electrochemical energy storage device. The electrode comprises a current collector and an electrode active material structural body arranged on the current collector, wherein the electrode active material structural body comprises a porous buffering layer and a nano-sheet array; the porous buffering layer is arranged on the surface of the current collector; the nano-sheet array is vertically arranged on the surface of the porous buffering layer and comprises multiple nano sheets; each nano sheet is of a porous structure, and at least one nano sheet comprises multiple single nano layers.