39results about How to "Increase mutual contact" patented technology

The invention relates to an insulating and heat-conducting polyamide composite material, which is prepared from the following components in part by weight: 60 to 90 parts of polyamide (PA) resin, 10 to 40 parts of polyphenylene sulfide (PPS) resin, 30 to 100 parts of lamellar heat-conducting filler, 10 to 80 parts of whisker-like heat-conducting filler, 1 to 10 parts of nanometer heat-conducing filler, 10 to 20 parts of glass fiber, 1 to 3 parts of coupling agent, 0.2 to 0.5 part of antioxidant and 0.5 to 2 parts of processing aid. The polyamide composite material prepared according to the formula has high heat-conducting property and thermalphysical and mechanical properties.

The invention discloses a conductive agent combined type lithium ion battery positive pole piece, which comprises a current collector and a positive pole film adhered to the current collector. The positive pole film comprises a positive pole active material, a conductive agent and a binding agent, wherein the conductive agent is a combination of CB and CNTs or CB and GNPs or CNTs and GNPs or CB, CNTs and GNPs. A manufacture method comprises the steps of (1) adding the binding agent into solvent and evenly stirring and mixing; (2) adding the conductive agent combination of two or three of CB, CNTs and GNPs into the solvent and evenly stirring and mixing; (3) adding the positive pole active material and evenly stirring and mixing to obtain positive pole slurry; (4) coating the positive pole slurry on the current collector and obtaining the lithium ion battery positive pole piece after roasting and rolling. The positive pole piece is high in energy density, low in expansion rate, high in coulombic efficiency and high in compaction.

The invention discloses a fuel cell catalyst taking multi-element compound as a carrier and a preparation method thereof, relating to a fuel cell catalyst and a preparation method thereof. The fuel cell catalyst of the invention adopts the mixed material of a granular carbon material (C1) and a linear carbon material (C2) as a carbon basal material; a precipitation thermal decompositing method is carried out on the two basal materials to prepare a compound carrier MOx-(C1+C2) of a carbon carrier and an oxide; an in-situ chemical reduction method is carried to prepare a Pt / MOx-(C1+C2) catalyst; MOx is CeO2, SnO2, Co3O4 or NiO; C1 is carbon black, carbon microsphere or mesoporous carbon; C2 is carbon fiber or carbon nanometer tube; the linear carbon material is combined with the granular carbon material to form a three-dimensional compound network structure, so as to increase the three-phase reaction activity area of the catalyst; and the doped metal oxide enhances the anti-CO capacity of the catalyst, and improves the use ratio of platinum.

The invention discloses an anode material of a lithium iron phosphate battery. The anode material comprises an anode active material composed of, by mass, 0.1% of titanium, 0.2% of magnesium and 0.1% of silver-modified lithium iron phosphate. A preparation method of the anode active material specifically includes 1) preparing first lithium iron phosphate; 2) dividing the first lithium iron phosphate into two equal parts so as obtain first preliminary lithium iron phosphate and second preliminary lithium iron phosphate; 3), preparing to obtain second lithium iron phosphate and uniformly mixing the first preliminary lithium iron phosphate, the second preliminary lithium iron phosphate and the second lithium iron phosphate so as to obtain the anode active material. The anode material of the lithium iron phosphate battery is higher in electric conductivity and tapping density, so that power generation voltage stability of the battery is improved and service life of the battery is prolonged.

The invention relates to a fuel-cell catalyst and a preparation method thereof, in particular to a fuel-cell catalyst using a complex carbon material as a carrier and a preparation method thereof. The catalyst is expressed as Pt / (C1+C2), and the carbon carrier is a mixture of a granular carbon material (C1) and a linear carbon material (C2). By using the mixture of the granular carbon material (C1) and the linear carbon material (C2) as the carbon basis materials, the invention prepares the Pt / (C1+C2) catalyst from the two basis materials by an in-situ chemical reduction method. The granular carbon material comprises carbon black, carbon microspheres or mesoporous carbon. The linear carbon material comprises carbon fibers or carbon nano tubes. The combination of the linear carbon material and the granular carbon material forms a three-dimensional complex network structure, thereby enlarging the three-phase reaction active region of the catalyst and improving the utilization ratio of platinum.

The invention discloses a three-dimensional composite material having a high thermal conductivity and a low dielectric constant, a preparation method and an application thereof, a substrate and an electronic device. The preparation method of the three-dimensional composite material comprises the following steps: mixing a thermally conductive filler with a pyrolysis material, and pressing the obtained mixture to obtain a pressed product; thermally treating the pressed product to remove the pyrolysis material to obtain a three-dimensional network skeleton; and filling the three-dimensional network skeleton material with a polymer material, and performing curing, wherein the particle size of the pyrolysis material is at least 8 times the particle size of the thermally conductive filler. The construction and the effective regulation of the three-dimensional network skeleton are realized by selecting the particle sizes of the thermally conductive filler and the pyrolysis material. Pressurization enhances the mutual contact between the fillers for the three-dimensional skeleton, and reduces the thermal resistance of the interface, and the three-dimensional composite material can rapidlyconduct heat in the three-dimensional skeleton heat conduction path formed by the thermally conductive filler to achieve the effect of greatly improving the thermal conductivity. The method has the advantages of simplicity in operation, low requirements for production devices, and facilitation of large-scale production.

The invention relates to the technical field of lithium batteries, in particular to a preparation method of a tungsten oxide / carbon flower-ball-shaped lithium battery composite negative electrode material, which comprises the following steps: dissolving a soluble tungstate in a polyether F127 water solution with the concentration of 5-50g / L, adding a dopamine solution, and conducting mixing, centrifuging, drying and calcining to obtain the tungsten oxide / carbon flower-ball-shaped lithium battery composite negative electrode material. According to the preparation method, a method of mutual promotion of tungstate precipitation and dopamine polymerization is adopted, in the presence of polyether F127, precipitation of tungsten oxide, adjustment of microstructure and coating of dopamine are realized at the same time through one-step reaction, and the lithium battery negative electrode material with a flower-ball-shaped micron-sized tungsten oxide / carbon structure is prepared.

The invention discloses a solid-liquid spiral separation press machine in the technical field of press machines. The solid-liquid spiral separation press machine comprises a shell, wherein a baffle plate is arranged in an inner cavity of the shell; the baffle plate is used for dividing the inner cavity of the shell into a solid-liquid separation tank and a stirring tank from top to bottom in sequence; a separation motor is arranged on the outer wall of the left side of the solid-liquid separation tank; a conveying and extruding shaft is arranged in an inner cavity of the solid-liquid separation tank; the bottom part of the right side of the solid-liquid separation tank is provided with a solid outlet; a stirring motor is arranged at the top part of a supporting block; a stirring shaft is arranged in an inner cavity of the stirring tank; the bottom part of the right side of a filter tank is provided with a water flow outlet. The solid-liquid spiral separation press machine disclosed bythe invention is simple in structure, solid-liquid separation is carried out on sewage and slurry through the solid-liquid separation tank, and liquid can be filtered into the stirring tank for carrying out stirring and precipitating and can be finally discharged after being deeply filtered in the filter tank, so that pollution emission is reduced; a scraper and a hairbrush are arranged at the outer side of a spiral pushing piece, meanwhile, filter holes in the baffle plate are also prevented from being blocked, and the working efficiency is improved.

The invention discloses a processing method of enhancing and recycling waste wrapping paper. The processing method comprises the following steps: (1) smashing; (2) deinking; (3) weighing raw materials; (4) preparing paste; and (5) preparing a finished product. The processing method disclosed by the invention remarkably improves the comprehensive performance of recycled, remanufactured wrapping paper, guarantees security and service life of the wrapping paper, and improves quality of the wrapping paper, thereby having high economic benefit and market promotion value.

The invention discloses Mn <4+> activated aluminophosphate red fluorescent powder and application of a preparation method of the Mn <4+> activated aluminophosphate red fluorescent powder in a plant growth light-emitting diode, and belongs to the technical field of light-emitting materials. A compound containing Al <3+>, a compound containing Ca <2+> and a compound containing P <5+> are used as rawmaterials, a compound containing Mn <4+> is used as an activator, and the Mn <4+> activated aluminophosphate red fluorescent powder is prepared by an improved high-temperature solid-phase method. Thepreparation method has the advantages of easily available raw materials, simple process, convenient operation, low preparation cost and environmental protection; and a prepared sample has the advantages of excellent luminescence property, high color purity and good stability. The Mn <4+> activated aluminophosphate red fluorescent powder can be widely applied to lighting and display devices and plant growth light-emitting diodes, is especially suitable for white light LEDs based on Mn <4+> ions, and is a promising red light-emitting material.

The invention provides a preparation method of high-purity rhodium iodide. The preparation method comprises the following steps: reacting rhodium chloride water solution with hydroiodic acid under a microwave radiation condition to obtain rhodium iodide, wherein the heat conduction process is not required in microwave radiation heating, the heating is uniform, and mutual contact and collision of molecules are increased, the conversion rate of the reaction product, namely rhodium iodide, is improved greatly, and the reaction process is easy to operate, quick and energy-saving; after the reaction is finished, continuously blowing oxidizing gases in reaction liquid to convert excess free I<-> ions in solution into I2 simple substances; and then filtering to obtain rhodium iodide, and washing I2 simple substances blended in rhodium iodide by organic solvent according to the characteristic that the I2 simple substances are easily dissolved in the organic solvent to obtain high-purity rhodium iodide. Rhodium iodide with high yield and high purity can be prepared by the preparation method, and the preparation method is simple to operate and low in cost.

The invention provides an environment-friendly production process of reclaimed rubber from a tire. The process comprises the following steps: (1) waste rubber is smashed into waste rubber powder; (2)the waste rubber powder and reclaiming auxiliary materials are jointly conveyed to a microwave reclaimer, are subjected to microwave desulfurization and reclaiming treatment in a pipe of the microwavereclaimer and move from a feed port of the pipe to a discharge port under the conveying and mixing actions of a conveying screw in the pipe, wherein the reclaiming auxiliary materials comprise a reclaiming activator, a reclaiming softener and lemon essential oil, the reclaiming activator accounts for 0.2%-1.1% of the mass of the waste rubber powder, the reclaiming softener accounts for 2%-30% ofthe mass of the waste rubber powder, and the lemon essential oil accounts for 2%-3% of the mass of the waste rubber powder; (3) the rubber powder subjected to desulfurization treatment is refined andformed by a refiner, extrusion and filtration are performed, and the reclaimed rubber from the tire is obtained. The novel production process of the reclaimed rubber from the tire is energy-saving andenvironmentally friendly, and the produced reclaimed rubber has the advantages of high strength, stable quality and the like.

The invention discloses a drying device for meat products. The drying device is characterized in that a drying cylinder is fixedly mounted at the upper part of a base through a base, a circulating belt wheel is movably mounted at the bottom of the drying cylinder through a rotating shaft, a circulating impeller is further fixedly mounted on a wheel shaft of the circulating belt wheel, the circulating impeller is arranged in a drying lifting cylinder, the drying lifting cylinder is fixedly installed at the bottom of the drying cylinder, a discharging channel is formed in the side, away from thecirculating impeller, of the drying lifting cylinder, overturning blades are arranged in the tangential direction of drying air outlet holes, an air inlet hole communicates with an air outlet of a circulating fan, and an upper driving belt wheel and a lower driving belt wheel are fixedly connected with a driving shaft of a driving motor. According to the drying device for the meat product, the meat products can be dried, seasonings can be added to the meat products in the drying process, the drying uniformity of the meat products is effectively guaranteed in a circulating air-drying mode, meanwhile, mutual contact of the meat products is promoted in the circulating process, and the mixing uniformity of the seasonings is ensured.

A water-lifting aeration water quality improving device enhanced through bubble cutting and bio-contact oxidation is provided. A lifting center cylinder is disposed in a cabin body of a bio-contact oxidation unit. The cabin body, the lifting center cylinder and a rising cylinder unit are coaxially arranged. A chamber between the cabin body and the lifting center cylinder is a filler filling chamber. The filler filling chamber is provided with a plurality of double-layer punched plates along the axial direction. The double-layer punched plates partition the filler filling chamber. A resistancereducing slot is disposed between two layers of each double-layer punched plate. A plurality of meshed ball shells are disposed in the filler filling chamber and contain a filler. The device combinesa bubble cutting aeration process and a bio-contact oxidation process, oxygen-rich water aerated by a water lifting aerator is brought into contact with a bio-contact oxidation gear in a process thatwater is lifted by the water lifting aerator, and concentrations of COD, N, P and other pollutants in water of a water source can be more effectively reduced, thus overcoming a water source pollutionproblem from the source.

The invention discloses an alkali metal charge compensation type Mn<4+> activated aluminophosphate luminescent material as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The chemical composition is CaAl<11.9-x-y>P0.1O19.1: xMn < 4 + >, yR < + >, wherein R is Li, Na, K, Rb or Cs < + >, x is greater than or equal to 0.001 and less than or equal to 0.15, and y is greater than or equal to 0 and less than or equal to 1.0. According to the invention, aluminate, phosphate and calcium salt are used as raw materials, lithium salt, sodium salt, potassium salt, rubidium salt and cesium salt are used as charge compensation agents, manganese salt is used as an activating agent, and an improved high-temperature solid phase method is adopted to prepare the material. The preparation method is easy in raw material obtaining, simple in process, convenient to operate, low in cost and environmentally friendly, and the prepared sample is excellent in luminescence property, long in fluorescence lifetime, high in color purity and good in stability. The aluminophosphate luminescent material can be widely applied to lighting and display devices and plant growth light-emitting diodes, and is a promising red luminescent material.