13results about How to "Improve electrostatic adsorption capacity" patented technology

The invention discloses a film covering and packaging machine for plastic parts with arc-shaped surfaces, and relates to the technical field of film covering, the film covering and packaging machine for the arc-shaped plastic parts integrates transmission and packaging, and a transmission part of the film covering and packaging machine comprises a mounting plate, a transmission roller, a transmission belt and a driving device; and the packaging part is provided with a leveling roller, an ion fan, a negative pressure dust collector, an electrostatic generator, a steering roller, a film covering roller and a laminating roller, the diameter of the laminating roller is adjustable, the laminating roller adapts to different arc-shaped plastic parts, it is ensured that the film is completely electrostatically adsorbed and attached to the surfaces of the plastic parts, and the laminating quality is guaranteed.

The present invention discloses a core material for concrete and its application in ultra-high performance concrete, belonging to the technical field of concrete. The core material for concrete provided by the present invention comprises, by weight, 20 to 50 parts of fly ash, 20 to 40 parts of mineral powder, 20 to 30 parts of bauxite powder, 10 to 20 parts of nano calcium carbonate, 5 to 10 parts of alumina, 5 to 10 parts of zeolite powder, 5 to 10 parts of kaolin, and 8 to 30 parts of water reducing agent powder. The present invention provides a core material for concrete, which is obtained by mixing a self-made water reducing agent with active powders such as fly ash, mineral powder, bauxite powder, nano calcium carbonate, alumina, zeolite powder, and kaolin, and can be directly applied to ultra-high performance concrete during construction, so that the concrete can achieve the effects of high strength, low shrinkage, and resistance to chloride ion penetration under standard curing conditions.

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

The utility model relates to the technical field of textile processing, and discloses a yarn tensioning mechanism for a textile elasticizer, which comprises a bottom plate body, a sawtooth sleeve is fixedly mounted on the top wall surface of the bottom plate body, a sawtooth column is arranged in the sawtooth sleeve, a fixing plate is fixedly mounted at the top of the sawtooth column, and a tensioning mechanism is arranged on the top wall surface of the fixing plate. The tensioning mechanism comprises a concave frame, a sliding rod, a tensioning spring and a tensioning wheel, a fixing frame is fixedly installed on the right side wall face of the sawtooth sleeve, a driving mechanism used for moving the sawtooth column is arranged in the fixing frame, and the driving mechanism comprises a worm, a worm gear, a first driving rotating rod and a transmission gear. When tensioning adjustment is needed, the worm gear is started, the first driving rotating rod drives the transmission gear to rotate through transmission of the transmission shaft, the transmission gear drives the sawtooth column and the tensioning wheel to move up and down, tensioning adjustment is achieved, yarn breakage is avoided through elastic buffering of the sliding rod and the tensioning spring, operation is easy, and practicability is high.

This invention provides a stabilizer composition and its preparation method. The stabilizer composition comprises, by mass percentage: 50%–99.9% alkane oil solvent, 0.01%–40% fatty acid salt compound, and 0.01%–20% modified fumed silica; wherein the modified fumed silica is fumed silica surface-treated with organohalosilanes. The stabilizer composition of this invention exhibits high dispersibility and low impurities, and can meet the stringent requirements of metallocene catalysts.

The utility model discloses an electrostatic wiping material, which relates to the technical field of non-woven fabrics, aims to solve the problems that the wiping material is easy to fluff, poor in adsorption effect, low in dust sticking efficiency and poor in cleaning effect, and comprises a three-dimensional fluffy fiber layer, and the bottom surface of the three-dimensional fluffy fiber layer is connected with a spunbond layer. The other side of the spunbond layer is connected with the plain fiber layer, the top surface of the three-dimensional fluffy fiber layer is of a convex structure, and a weak cation high-molecular polymer assistant is sprayed on the top surface of the three-dimensional fluffy fiber layer. Compared with an existing product, friction between the protruding parts of the cloth cover and a contact body is increased, the resistivity of the product can be improved to 1015 (omega) from 1010 (omega), the electrostatic adsorption effect is further enhanced, the dust attaching capacity is enhanced, and the wiping effect is good.

The invention discloses in-mold film pasting equipment and a working method thereof, and the in-mold film pasting equipment comprises a film taking mechanism in which a plurality of plastic films are placed and stacked; the conveying mechanism is provided with a mechanical arm assembly, and the mechanical arm assembly takes the plastic films to the assembling area one by one; and the static electricity generating device is connected with the film taking mechanism, the static electricity generating device is used for completing static electricity attachment on the plastic film conveyed by the mechanical arm assembly, and the plastic film obtained after static electricity attachment is completed is conveyed to the assembling area through the mechanical arm assembly to be stamped and attached to the surface of the to-be-machined mold.

The invention discloses a filtering device of an intelligent extractor hood, the intelligent extractor hood and a control method, and the filtering device of the intelligent extractor hood is used for being arranged in an oil smoke channel of the extractor hood; the filtering device comprises an electret pre-charged filter screen and a filter element, the piezoelectric transducer assembly comprises a first piezoelectric transducer and a second piezoelectric transducer which are arranged on the two opposite sides in the oil smoke channel; the electret pre-charged filter screen and the piezoelectric transducer assembly are sequentially arranged from upstream to downstream along a lampblack flowing path.

The invention discloses a chilling system alcohol-based coating for cast iron and a preparation process thereof, and belongs to the technical field of cast iron alcohol-based coatings, the chilling system alcohol-based coating comprises a refractory aggregate, a composite modified suspending agent, a composite binder and a solvent, based on 100 parts by weight of the refractory aggregate, 3-5 parts of the composite modified suspending agent, 1.5-25 parts of the composite binder and 30-70 parts of industrial ethanol. The coating is applied to the surfaces of phenolic resin precoated sand for large cast iron and sand mold embedded chilling blocks in a brush coating mode, excellent brushing performance and coating performance are shown, the suspending agent does not need to be added with water for expansion, ignition is conducted immediately after brushing, the surface of the coating can be promoted to be rapidly dried, the strength of a completely dried coating is high, and the coating can be applied to large-scale cast iron. The coating has good coating performance on the surfaces of resin sand molds and iron blocks, is easy to peel off after being sintered, and can effectively avoid the phenomena of sand burning and iron melting, so that the surface smoothness of castings is remarkably improved, the cleaning workload in the later period of demolding of the castings is greatly reduced, and the quality of the castings is fundamentally improved.

The application discloses a kind of multilayer biomass cellulose adsorption materials and its preparation method and application, belong to biomass material and sewage treatment technical field.The application first obtains PEI-cellulose by polyethyleneimine modification to biomass cellulose;Then PEI-cellulose and chitosan are crosslinked to prepare surface layer adsorption liquid;While unmodified biomass cellulose and polyvinyl alcohol are mixed to prepare middle layer adsorption liquid;Finally, by layer liquid nitrogen freeze forming, freeze drying and alkali washing treatment, obtain the biomass cellulose adsorption material with sandwich multilayer structure.The multilayer adsorption material prepared by the application has positive electricity on outer layer, can be efficiently adsorbed by electrostatic effect in water with negative electricity micro / nano plastic;Middle layer is neutral, can be used to adsorb organic pollutants carried by micro / nano plastic.The material of the application is low in cost, simple in preparation process, fast in adsorption rate, high in removal rate and reusable, and has good application prospect in water treatment field.

The curtain cloth comprises a surface layer, the bottom of the surface layer is connected with a middle layer, and the bottom of the middle layer is connected with a bottom layer; according to the curtain fabric with the dustproof lower hem, the polypropylene fibers also have a good electrostatic adsorption effect, the adsorption performance of the surface layer can be further improved, and the situation that dust shakes in wind and drifts into a room, and consequently indoor dust pollution and accumulation are caused is prevented; the wear resistance of the curtain cloth can be improved while the electrostatic adsorption performance is not reduced, the polyethylene bubbles can form bubble isolation layers on the two sides of the curtain cloth and keep balance of the curtain cloth, and the nylon fibers can reduce part of heat transmitted by the polypropylene fibers and provide additional heat insulation protection, so that the curtain cloth has better heat insulation performance, and the service life of the curtain cloth is prolonged. A counterweight shot can be added at the bottom, so that the stability of the curtain cloth is kept, the performance of a sound insulation material is effectively exerted, the sound insulation effect is improved, a quiet environment is created, and the curtain cloth is more comfortable to use.

The invention belongs to the technical field of alumite detection, and particularly relates to a laser alumite colorant testing method and tool, the laser alumite colorant testing tool comprises a detection box, a detector and a gas supply unit are installed in the detection box, the detector is used for testing a colorant in alumite, and the gas supply unit supplies gas to the detection box to maintain the environment state in the detection box; after installation is completed, the rotating belt drives the head end of the chain to rotate reversely and drives the other parts of the chain to return to the surface of the rotating belt along the guide plate, the clamping rod is inserted into the clamping groove again, the top of the chain is squeezed by the rotating shaft in the rotating process, the chain drives the clamping block to descend through the clamping groove, and the clamping block slides in the clamping groove. And the clamping blocks can cross the tops of the clamping rods to clamp and fix the clamping rods again, so that the purpose of fixing the chain on the surface of the rotating belt is achieved, the situation that the alumite shakes too much in the transportation process to cause creases is avoided, and the protection degree of the alumite is improved.

The invention discloses an antibacterial anti-ultraviolet adhesive-free electrostatic adsorption protective film and a preparation method thereof, and relates to the technical field of polymer protective films, the protective film sequentially comprises a layer A, a layer B, a layer C and a layer D from top to bottom; wherein the layer A is made of LDPE (Low-Density Polyethylene); the layer B is a mixed layer of LDPE (low-density polyethylene) and LLDPE (linear low-density polyethylene) in a mass ratio of 1: 1; the layer C is a mixed layer of LDPE (low-density polyethylene) and LLDPE (linear low-density polyethylene) in a mass ratio of 3: 7; the D layer is a bonding layer; the bonding layer comprises electrostatic adsorption fibers and an antistatic material. Compared with the currently used protective film material, the product does not need to use an adhesive, the polyethylene material film is adsorbed on the surface of a protected matrix material through electrostatic interaction, the protection effect on related commodities is achieved, and certain improvement of ultraviolet resistance, antibacterial performance and mechanical performance is achieved through doping of specific nanoparticles.