110results about How to "Good mixing and dispersing" patented technology

A method for producing a cathode material for a cathode of a galvanic cell, such as a lithium or natrium sulfur cell. In order to improve the electric and ionic conductivity, the sulfur accessibility and utilization, elemental sulfur, at least one electrically conductive component and a solvent or a solvent mixture are mixed in method step a), the elemental sulfur being completely dissolved in the solvent or in the solvent mixture, and the solvent or solvent mixture is removed in a method step b).

The invention relates to a multilayer cross-linking organic doped fluoric ion film with reinforced fiber and preparation method thereof, belonging to the field of functional high molecule composite material, which is composed of a fluoric ion exchange film and reinforced fiber. The ion exchange film prepared by this invention has high proton conductivity, high mechanical performance, good chemical and mechanical stability, which can effectively prevent penetration of hydrogen and methanol.

The invention discloses an intensification method and a device for a continuous banburying process of high polymer materials based on eccentric helix. The method utilizes two helical rotors which are eccentric with a rotating axis thereof rotating in a heterodromously meshing mode. The period of the internal clearance between each rotor and the inner wall of a stator, and the periods of the radial meshing clearance and the axial clearance between two rotors clearance change from big to small and then from small to big. The method enables materials to be intensified during the axial circulation continuous banburying process of the two rotors. The helical axises of the two helical rotors are fixed in a mutually parallel mode. An outer surface of the rotors is in an eccentric meshing type convex-edge structure, wherein a certain eccentric quantity exists between the central axis and the rotating axis of each rotor. When the two rotors rotate in an inner meshing mode, contained materials are plasticized and extruded to convey along with the period change of the internal clearance between each rotor and the inner wall of a stator, the radial meshing clearance and the axial clearance between two rotors clearance so as to achieve an intensive banburying effect. The intensification method and the device for the continuous banburying process of high polymer materials based on the eccentric helix can achieve the continuous banburying process of high polymer materials, and have the advantages of improving the production efficiency and the product quality, and meanwhile reducing the energy consumption and the like.

The present invention relates to a method for producing a carbon nanotube aggregate whose bulk density is easily controllable. Therefore, the present invention provides a carbon nanotube aggregate suitable for use in various fields.

The invention discloses a nylon / graphene / carbon fiber composite powder and a preparation method thereof, and application of the composite powder to selective laser sintering technology. The preparation method comprises the following steps: subjecting nylon powder and graphene powder to double-liquid-phase mixing so as to prepare nylon / graphene composite powder; and then mechanically mixing the nylon / graphene composite powder with carbon fibers, a flow promoting agent and an antioxidant so as to obtain the nylon / graphene / carbon fiber composite powder. The invention provides the preparation method for the nylon / graphene / carbon fiber composite powder. A laser-sintered member prepared from the nylon / graphene / carbon fiber composite powder through selective laser sintering has good conductivity,good thermal conductivity and excellent mechanical properties.

The invention relates to a rapid continuous flow synthesis process of fluoroethylene carbonate and an integrated continuous flow reactor for realizing the process. The continuous flow synthesis process is characterized in that a raw material to be fluorinated and fluorine gas are used as reactants, and are continuously and successively subjected to steps of mixed dispersion, fluorination reaction,gas-liquid separation, so as to obtain the fluoroethylene carbonate; and the synthesis process is carried out in the integrated continuous flow reactor, the raw material to be fluorinated and the fluorine gas are continuously added to a feed inlet of the integrated continuous flow reactor, and the fluoroethylene carbonate is continuously obtained from a discharge port of the integrated continuousflow reactor with the reaction time equal to or less than 600 s. The process is a rapid, safe, efficient, highly versatile and easy for mass production continuous synthesis process of the fluoroethylene carbonate.

The invention relates to the technical field of preparation of polypropylene and especially relates to a high-blackness polypropylene composition and a preparation method thereof. The high-blackness polypropylene composition is composed of following components, by weight, 55-99 parts of polypropylene resin, 0-40 parts of inorganic filling materials, 0.2-1.3 parts of crosslinked polymethyl methacrylate microspheres, 0.3-3 parts of nano carbon black and 0.4-1.5 parts of other additives. The preparation method includes the steps of feeding the polypropylene resin, the crosslinked polymethyl methacrylate microspheres and the nano carbon black into a high-speed stirrer, stirring the materials uniformly, adding other additives and filling materials, stirring the materials uniformly, and performing extrusion pelletization, melt extrusion and granulation to the uniformly-mixed materials through a double-screw extruder to prepare the high-blackness polypropylene composition. The composition is high in blackness and low in cost.

The invention discloses an extrusion method and die achieving the synergistic effect of ultrasonic vibration and uniform tensile stress. The extrusion die comprises a die body, a first ultrasonic vibration device and a second ultrasonic vibration device. The first ultrasonic vibration device and the second ultrasonic vibration device each mainly comprise an amplitude-change rod, a vibration transmission rod, a transducer, a signal line and an ultrasonic generator; through holes are symmetrically formed in the die body; the small ends of the amplitude-change rods of the first ultrasonic vibration device and the second ultrasonic vibration device communicate with a die runner through the through holes; and the amplitude-change rods extend into the through holes of the extrusion die in the mode of being perpendicular to flanges. Through the extrusion process that ultrasonic vibration is perpendicularly overlapped on a melt, the pressure action of pulse change acts on the melt, and the synergistic effect of ultrasonic vibration and uniform tensile stress is achieved. According to the extrusion method and die, the pressure fluctuation during extrusion of the plastic melt is reduced, the apparent viscosity of the melt is reduced, the compatibility of polymer blends is improved, the flow uniformity of materials is improved, and thus the combination property of a finished product is improved.

The invention relates to a multilayer cross-linking organic doped fluoric ion film with reinforced fiber and preparation method thereof, belonging to the field of functional high molecule composite material, which is composed of a fluoric ion exchange film and reinforced fiber. The ion exchange film prepared by this invention has high proton conductivity, high mechanical performance, good chemicaland mechanical stability, which can effectively prevent penetration of hydrogen and methanol.

The invention discloses a double-screw extruder which comprises an extruder barrel, two screw units, an independent section and a filling section, wherein two screw units are positioned in the extruder barrel; a screw unit section in one screw unit is meshed with that in the other screw unit to form a meshed section; a discharging hole is formed in the tail end of the meshed section; two independently communicated flow channels are formed in the extruder barrel; the independent section, the filling section and the meshed section are arranged in sequence along the conveying directions of the screw units; both screw units of each of the independent section and the filling section are in non-meshed states and are positioned in the flow channels respectively; heaters are arranged on the whole section of the extruder barrel; a filler is arranged on the filling section. According to the double-screw extruder, the independent section and the filling section are equivalently two independent single screws; molten materials in the screw grooves of the screws have relatively good sealing effects, so that the loss of added gas and supercritical fluid is avoided; the meshed section has a relatively good dispersive mixing effect on the materials, so that the polymer melt foaming is facilitated.

The invention discloses a mechanical agitation desulphurization method for molten iron desulphurization pretreatment. The desulphurization method includes five steps including prior sample taking for temperature measurement, prior slag scrabbling, desulfurizing agent adding and agitation, later slag scrabbling and later sample taking for temperature measurement. In the steps of desulfurizing agent adding and agitation, an agitation device is inserted into a molten iron tank containing molten iron, and is composed of an agitator and a guide plate, and the guide plate and the agitator are both vertically instead into the molten iron; and the vertical distance between the bottom of the guide plate and the top of a blade of the agitator is H. Compared with the rotating speed of a conversional KR method, the rotating speed of the agitator is decreased by 10% to 20%; and the insertion depth of the agitator is increased by 10% to 30% compared with the insertion depth of the conversional KR method.

The invention relates to a thickness-adjustable high-thermal-conductivity graphene heat dissipation film and a preparation method thereof. Hydrogen bonds between graphene oxide are destroyed by addinga doping agent, and the viscosity of a system is reduced, so that graphene oxide slurry with high solid content (4-15%) can be prepared, dispersion and stirring are facilitated by reducing the viscosity, and after uniform dispersion, through addition of an alkali, hydrogen bonds of graphene oxide in a system under alkalinity are partially recovered, the viscosity is increased, and stirring is stopped when the viscosity is increased to a required value, thereby obtaining graphene oxide slurry with moderate viscosity (30-150 thousand mPa.s). The graphene heat dissipation film is prepared by adopting a coating method, the graphene oxide film with the thickness of 15-2500 microns can be prepared after the prepared graphene oxide slurry is smeared and dried, and the graphene heat dissipation film with the thickness of 10-500 microns, the density of 1.6-2.2 g / cm<3> and the heat conductivity coefficient of more than 1,000 W / m.K can be prepared after sintering and calendering.

The invention discloses offset ink and a preparation method thereof.The offset ink comprises, by weight parts, 10-20 parts of pigment, 40-50 parts of binder, 5-8 parts of antiwear agent mixture, 3-4 parts of cerate and 2-10 parts of auxiliaries, wherein the antiwear agent mixture comprises, by weight parts, 20-30 parts of resin oil, 35-45 parts of silane coupling agent and 3-4 parts of antiwear agent.By adoption of the antiwear agent mixture and the adding of the silane coupling agent, through reaction and self-blend crossover, as well as crossover with solidified resin, a network shape is formed in the offset ink, and the antiwear performance of the entire offset ink is improved; and the offset ink is simple in preparation steps and low in process cost.

The invention discloses a screening type spiral conveying device capable of heating and drying. The screening type spiral conveying device comprises a base, a drying and screening mechanism is installed at the top end of the base, the drying and screening mechanism comprises a transfer box, an auger, a motor, a feeding box, a rotating wheel, a screening plate, a damping telescopic rod, a damping spring, a fixing box, a protection plate, an air heater, a first dust filtering plate, a waste box and a vibration motor, the transfer box is connected to the top end of the base, and the auger is connected to the top end of the transfer box. According to the screening type spiral conveying device, by means of the drying and screening mechanism, materials can be screened and dried, workers can disperse and stir the materials conveniently, the workers can conduct vibration screening on the materials conveniently, then the drying and screening effect of the device is improved, therefore, the processing rate of the device on the materials is increased, and the material quality is prevented from being affected by insufficient drying and screening of the materials due to stacking and mixing of the materials.

The invention provides a preparation method of a copper powder carrier catalyst for a bromamine acid Ullman condensation reaction. By using powder-shaped sepiolite as a carrier of copper powder, the copper powder is loaded on the sepiolite which is treated by sulfuric acid. The powder-shaped sepiolite is dispersed in water and stirred, and is slowly added with the sulfuric acid to adjust the pH value to 3 until no bubble is discharged from the mixture; the final pH value is controlled to be 3 to obtain a sepiolite-water mixture treated by the sulfuric acid; copper sulfate is dissolved in the sepiolite-water mixture, and then is added with a complexing agent to complex for 30-60 minutes; then, formaldehyde is added to reduce for 30-60 minutes at the temperature of 45-60 DEG C to obtain the catalyst loaded with the copper powder on the surface of the sepiolite for the bromamine acid Ullman condensation. The catalyst is prepared in site, and is used for the bromamine acid Ullman condensation reaction in site, so that the catalytic activity is higher, and the complex pre-treatment to the copper powder is avoided; the yield of Ullman condensation products being 93% above is higher.

The invention belongs to the field of light-emitting materials and discloses a blue-light-excited fluorine manganite red-light-emitting material and a preparation method and application thereof. The chemical formula of the blue-light-excited fluorine manganite red-light-emitting material is A2MnF6, wherein A is optional one of or the combination of more than two of Li, Na, K, Rb, Cs and NH4. The preparation method includes: dissolving AHF2 into a hydrofluoric acid solution, adding KMnO4, stirring to achieve uniform dissolving, dropwise adding a hydrogen peroxide solution to perform coprecipitation reaction, filtering to collect precipitates, and washing and drying to obtain the A2MnF6 red-light-emitting material. The fluorine manganite red-light-emitting material is good in light-emittingperformance, capable of effectively improving the photochromic performance of a white-light LED, capable of lowering color temperature and increasing color rendering index and applicable to the fieldsof white-light LED lighting and backlight display.

The invention belongs to the technical field of functional fiber materials, and discloses compound deodorizing, antibacterial and antiviral multifunctional fiber and a preparation method thereof. PVA and an organosilicon quaternary ammonium salt antibacterial agent are added into a traditional Chinese medicine antiviral extracting solution to obtain a mixed solution, then a catalyst and a sodium silicate or silicate ester compound are added for a condensation reaction, PVA-SiO2 interpenetrating network particles coating a traditional Chinese medicine antiviral component and the organosilicon quaternary ammonium salt antibacterial agent are obtained, and the obtained functional particles and a fiber matrix are subjected to mixed spinning, so that the product is obtained. The PVA is used as a coating agent of the traditional Chinese medicine antiviral component and the organosilicon quaternary ammonium salt antibacterial agent, so that mixing and dispersion of the traditional Chinese medicine antiviral component and the organosilicon quaternary ammonium salt antibacterial agent in the fiber matrix are promoted; and further an interpenetrating network enhanced structure is formed with SiO2. The long-lasting deodorizing, antibacterial and antiviral effects can be achieved and the fiber strength can be enhanced by introducing the multifunctional fiber into the fiber matrix.

The invention relates to a reciprocating-type single screw pin extruder with one-cycle rotation for three times reciprocating and a high efficiency mixing element. The extruder screw employs a unique drive unit, when the screw enables one-cycle rotation, the screw performs three-time reciprocating motion. According to the invention, 12 rows of pins are arranged on inner wall of a machine cylinder, the screw flights are regularly interrupted, and the screw flights and the pins perform relative motion for stirring and cleaning screw flights. The rotation direction of the screw flights can employ dextrorotation or levorgyration according to practical condition, when dextrorotation screw flight is changed to levorgyration screw flight, the voltage buildup capability is increased. Through the improvement of a traditional reciprocating-type single screw pin extruder, shunting frequency of fluid in an element flow field can be increased, distribution mixing performance of the mixing element can be increased, a high shear area of the material flow field in the mixing element can be increased, and the dispersion-mixing performance of the mixing element can be increased.

The invention discloses a silicon-containing acrylic resin based on catechol structural functionalization and preparation and an application thereof. Alkyl acrylate, a vinyl compound containing a catechol ether structure functionalized group and a vinyl silicon-containing compound are subjected to copolymerization reaction to obtain a prepolymer, then the prepolymer undergoes a reaction with a hydrogen halide compound to prepare the functionalized silicon-containing acrylic resin based on the catechol structural functionalization, and an organic solution of the resin is composited with a plasticizer, a filler and an antifouling agent to prepare a marine antifouling coating. The beneficial effects comprise that the catechol structure functionalized group is introduced into a side chain of silicon-containing acrylic resin, the adhesive force of the resin is increased, and the coating construction complexity degree and use costs of the antifouling coating are reduced; the catechol functionalized group has relatively high activity, the resin is optimized and modified by introducing the group with special functions, the composited marine antifouling coating is a marine antifouling coating, having the advantages of strong adhesive force and excellent decontamination ability, of the silicon-containing acrylic resin based on catechol structural functionalization.

The invention discloses a discarded leather superfine fiber, a high electromagnetic shielding material combined with the discarded leather superfine fiber and polyvinyl alcohol and preparation methodsof the discarded leather superfine fiber and the high electromagnetic shielding material. The high electromagnetic shielding material is prepared in the way that leather-manufacturing solid waste (LSW) is added into a solid phase force chemical reactor for circulation grinding at first; then the obtained discarded leather superfine fiber and the polyvinyl alcohol are mixed in a fusion mode, and casting is performed to form films; and afterwards, film pieces are dipped into a chemical plating solution to be subjected to surface silvering reacting, flattening and air drying are also conducted,or the film pieces are spliced into a multilayer composite material. By adoption of the method, the LSW can be smashed into superfine loose short fibers which can be well compounded with the polyvinylalcohol, the dissipation effect on electromagnetic waves by leather collagenous fibers can be kept, the obtained composite material can show excellent electromagnetic shielding performance with the help of the high-efficiency reflection action of a surface silvered layer, and high-value recycling of the LSW is realized; and moreover, the advantages that operation is simple and convenient, energycan be saved, pollution is small, cost is low and mass production can be facilitated are achieved.

The invention discloses a graphene lithium battery material and a preparation method thereof. The battery material comprises the following raw materials based on part by weight: 100 parts of lithium titanate, 3-6 parts of graphene, 0.5-2 parts of binding agent, 0.5-1.5 parts of rare-earth compound, 2-5 parts of dispersing agent, 1-3 parts of defoaming agent and 30-50 parts of organic solvent. In the prepared graphene lithium battery, the graphene and other constituents can be mixed and dispersed very well, each constituent is good in compatibility, the battery has the advantages of large electrical capacity, excellent conductivity, long service lifetime, no heat generation during the charge-discharge process and the like, the preparation process is simple, industrial production is easy toimplement, and the battery has relatively good economic benefit and social benefit.

The invention provides a mixing device, comprising: a housing; a mixing component arranged in the housing and comprising a rotary shaft and a blade component arranged on the same, wherein the blade component includes blades; an adjusting portion for connecting the blades and the rotary shaft to adjust the angle of the blades relative to the rotary shaft. By using the mixing device, the problem ofthe prior art can be solved that since powder mixing efficiency is low due to poor powder dispersibility and the powder has uncontrollable statistical dimensions in polymer matrix, a modified polymerhas poor spinnability.

The present invention relates to the technical field of polyurethane coating, and particularly a production process of polyurethane coating. The process includes 1) mixing fumed silica, nano calcium carbonate, ultrafine ground calcium carbonate and a plasticizer to obtain a first material the water content of which is not more than 0.05%, mixing polyether polyol with isocyanate to obtain a secondmaterial, with the water content of the polyether polyol being not more than 0.05%; 2) mixing the first material with the second material to obtain a third material; 3) mixing the third material witha solvent, a catalyst, an additive and a dispersant to obtain the polyurethane coating. The process enables uniform dispersion and mixing of materials of the polyurethane coating, and reduces a skinning phenomenon of the materials, and the production efficiency of the polyurethane coating is increased.

The invention relates to the technical field of paint dispersion. The invention discloses an anti-blocking water-based paint dispersing and filtering device. The device comprises a hydraulic cylinder,a base is fixedly connected to the bottom end of the hydraulic cylinder, a cross arm box is fixedly connected to the top end of the hydraulic cylinder, a hoop is fixedly connected to the lower end ofthe outer side of the hydraulic cylinder, a guide sleeve is fixedly connected to the upper end of outside the hydraulic cylinder, a guide rod is slidably connected to the inner side of the guide sleeve, and a positioning frame is fixedly connected to one end of the hoop. A first rotating rod of a dispersing mechanism drives a first stirring impeller to stir and disperse one side of a filter screen piece in a stirring barrel, the dispersed water-based paint enters one side of a filter screen barrel through the filter screen piece, a second stirring impeller is driven by a second rotating rod to stir the water-based paint on one side of the filter screen barrel, the rotating speed of the second stirring impeller is higher than that of the first stirring impeller through speed regulation ofa large gear and a small gear, and dispersion of the water-based paint is facilitated, therefore the solubility of the water-based paint is better.

The invention discloses an automatic fermentation tank for tea processing and production. According to a technical scheme in the invention, the automatic fermentation tank comprises a frame, a tank body and an agitating rod rotatably arranged in the tank body, wherein a motor is arranged on the outer side of the closed end of the tank body; the rotating shaft of the motor is connected with the rotating shaft of the agitating rod in the tank body in a linkage manner; a humidifier is arranged on the tank body; the outlet of the humidifier is communicated with a humidifying hole; an oxygen-rich membrane oxygen generator is arranged on the tank body; the gas outlet of the oxygen-rich membrane oxygen generator is communicated with a vent hole; an air suction machine is arranged on the tank body; the air suction port of the air suction machine is communicated with an air exchanging hole; a detection sensor is arranged in the tank body; a controller is arranged on the frame; the output end ofthe detection sensor is connected with the input end of the controller; and the output end of the controller is separately connected with the control ends of the humidifier, the oxygen-rich membraneoxygen generator and the air suction machine. The automatic fermentation tank for tea processing and production in the invention can automatically carry out tea fermentation and improves production efficiency and product quality.

The invention discloses a mixing device of dyestuffs for clothing fabrics. The mixing device comprises a loading tank, a charging pipe, draught fans, air inlet pipes, adjusting bolts, an observation window, a water feeding pipe, a liquid discharging pipe, a connector, a first motor, a transmission belt, supporting legs, mounting rods, baffle plates, mesh holes, a rotary rod, a belt wheel, filtering screens, a second motor, a receiving hopper, wind direction plates and rotary shafts. The mixing device disclosed by the invention has the beneficial effects that the two filtering screens and the two air inlet pipes are mounted in the loading tank so that when the dyestuffs fall off from the upper part in a working process, the two filtering screens can be used for dispersing and stirring the dyestuffs. The wind direction plates and the rotary shafts in the air inlet pipes can be used for adjusting the direction of wind entering the filling tank according to actual requirements in the working process and various wind directions can be selected according to different amounts of the dyestuffs, so that the dispersion and mixing effect of the dyestuffs is better. The device disclosed by theinvention is convenient to use and the speed of dispersing and mixing the dyestuffs can be increased; the quality of dispersing the dyestuffs can be improved and the fabrics are more uniformly rendered.

The invention belongs to the technical field of rubber mixing, and relates to a planetary gear type mixing device. A feeding section and a planetary section are combined in a split manner and are connected through a flange; a sun gear screw, planetary gear screws and an internal tooth cylinder of the planetary section are all in helical cylinder gear transmission; six planetary gear screws are connected by a left planetary carrier and a right planetary carrier into a whole body; each planetary gear screw is engaged with external teeth of the sun gear screw and internal teeth of the internal tooth cylinder respectively; the feed section and the planetary section are provided with cooling water passages respectively for filling a cooling medium or a heating medium; the left planetary carrier is provided with a scraper which contributes to discharge of a material from a discharge hole of the internal tooth cylinder; the length of the planetary section is moderate, so machining and mounting are facilitated, and proper mixing time is guaranteed; the device has the advantages of rational structure, scientific design, reliable principle, easiness and convenience in assembly, good dispersive mixing effect and wide application range.

The invention relates to a composition containing polyvinyl alcohol. The composition includes components by weight in parts in the specification. The composition allows an obtained polyvinyl alcohol film to have good rigidity and stiffness.