68results about How to "Uniform coating effect" patented technology

The invention relates to a high-capacity SiOx based composite negative electrode material, a preparation method and a battery, wherein the negative electrode material comprises a silicon oxide material, a carbon material and an amorphous carbon coating layer; the silicon oxide material is silicon oxide or silicon oxide material modified in a carbon coating manner; surfaces of carbon material particles are coated with the silicon oxide material. A preparation method of the high-capacity SiOx based composite negative electrode material comprises the steps of performing physical processing or carbon coating modification on a silicon oxide raw material, thus obtaining a micron-sized silicon oxide material; and then mechanically fusing, coating with a solid phase and sintering at a high temperature to obtain the high-capacity negative electrode material. Through the high-capacity SiOx based composite negative electrode material, the effect of uniform dispersing and coating of the micron-sized silicon oxide particles on the surfaces of the carbon material particles can be achieved by virtue of the combination of mechanical fusion and solid-phase coating processes. The silicon oxide particles are well dispersed on the surface of the carbon material particle; the strength of bonding between the silicon oxide particles and the carbon material particles is high; the recycling performance of the material can be greatly improved; and meanwhile, the high-capacity SiOx based composite negative electrode material is high in first efficiency (breaking through the theoretical efficiency of SiOx), low in expansion rate, long in service life, environmental-friendly, pollution-free and low in cost.

The invention discloses a preparation method of modified ultrafine bentonite, prepared modified ultrafine bentonite and application thereof. The preparation method comprises the following steps: (1), drying and crushing crude bentonite; performing multi-stage water washing, and removing sander; purifying the bentonite till the montmorillonite content is above 95wt%; adding water, and regulating PH to 7 plus or minus 1; stirring and reacting for 1-12 hours; purifying the bentonite secondarily till the montmorillonite content is above 98wt%; and pulverizing to obtain 3000-5000-mesh ultrafine bentonite powder; and (2), at a temperature of 100-150 DEG C, pressurizing, and performing surface activation modification by using a boric acid ester modifier to obtain the modified ultrafine bentonite product. The problems of the compatibility and the dispersibility of the ultrafine bentonite and a polymer material are solved; and when the prepared modified ultrafine bentonite can be applied to processing of a rubber or plastic product, the prepared modified ultrafine bentonite can be used as a reinforcing agent and the service life of the produced rubber or plastic product can be prolonged by more than 30%.

The invention relates to the technical field of lithium ion batteries, and discloses a positive electrode material, a preparation method thereof and a lithium ion battery. The positive electrode material comprises a high-nickel cobalt-free multi-element positive electrode material intermediate and a cobalt-containing compound coating the outer surface of the high-nickel cobalt-free multi-element positive electrode material intermediate, and the total mole number of nickel and manganese in the high-nickel cobalt-free multi-element positive electrode material intermediate is taken as a reference, the content of the cobalt-containing compound in terms of cobalt element is 0.5-5 mol%. The positive electrode material is stable in structure, high in energy density, good in rate capability, high in capacity retention ratio, simple in preparation method and low in cost.

The invention relates to a preparation method of a lithium iron phosphate/carbon nanocomposite, which comprises the steps of preparing nanoscale iron phosphate; uniformly mixing the nanoscale iron phosphate with a lithium source, and introducing CO2 gas or adding soluble carbonate for a deposition reaction to obtain a nanoscale lithium iron phosphate precursor; performing chemical vapor deposition (CVD) coating on the lithium iron phosphate precursor to obtain a carbon-coated lithium iron phosphate material. According to the method provided by the invention, lithium is uniformly deposited on the surface of iron phosphate, and molecular-level uniform and consistent mixing can be realized; compared with a process of preparing lithium iron phosphate directly by a hydrothermal process, the reaction time is short, the energy consumption is low, and the process and appearance are easier to control; finally, carbon reduction and coating are performed by a CVD process, the coating effect is more uniform than that of the traditional carbon coating process, and the electric conductivity of lithium iron phosphate is improved perfectly.

The invention discloses a coating-structure sodium-ion battery anode material as well as a reparation method and application thereof. The method comprises the following steps: selecting/preparing coating liquid, wherein the coating liquid contains coated precursor formed by metal salt and/or hydrate of the metal salt; putting a to-be-coated anode material into a coating furnace, heating to 200-1000 DEG C, introducing the coating liquid into the coating furnace through compressed air or nitrogen or argon, heating to decompose the coated precursor into oxide uniformly coating the surface of theanode material; and taking out the prepared anode material with an oxide coating layer, so as to obtain the coating-structure sodium-ion battery anode material.

The invention discloses a core-shell structure multi-component composite material, a preparation method thereof and a lithium ion battery comprising the multi-component composite material. The multi-component composite material comprises a graphite core and an outer shell coating the surface of the core, and the outer shell comprises a chain-shaped hard carbon layer and a soft carbon layer from the inside to the outside. The method comprises the following steps: 1) mixing an amorphous carbon precursor, a solvent and a surfactant to obtain a liquid phase first precursor; 2) mixing the core material graphite and the chain polymer material, and carrying out surface modification treatment to obtain a second precursor; 3) adopting a second precursor and the first precursor of the liquid phase to prepare a composite third precursor through coating treatment, and carry out carbonization to obtain a core-shell structure multi-component composite material. The method of the invention is simple,the process is short, the cost is low, the environment is friendly and pollution-free, and the obtained multi-component composite material has the characteristics of high compaction density, high first reversible capacity and first coulomb efficiency, and excellent processing performance and low temperature performance.

There is a Vinyl chloride-acrylonitrile copolymer fiber and fiber-glass coving yarn and its jet spinning preparation method. The characteristic of it is that the continuous fiber-glass yarn is the core line of the coving yarn, Vinyl chloride-acrylonitrile copolymer fiber homogeneously covered and twisted around the continuous fiber-glass yarn. This Vinyl chloride-acrylonitrile copolymer fiber and fiber-glass coving yarn is made by jet spinning preparation method. The technology processes are as fellows: the chloride-acrylonitrile copolymer fiber is through cleaning, scotching or firstly, secondly and thirdly drawing process, it is lonely made the strip of 2g/m-4g/m. Then the strip of Vinyl chloride-acrylonitrile copolymer fiber and the continuous glass-fiber yarn feed into the discharge nozzle of the jet spinning machine at the same time, the Vinyl chloride-acrylonitrile copolymer fiber and fibre-glass coving yarn can be coiled out from the second nozzle. Jet spinning preparation method is a new preparation method, and the feather of covering yarn formed by this method is short and rare. It has the ability to resist the forming of hair and hair bulb, and the outer fibre covers uniformly.

The invention discloses a preparation method of novel zirconium-aluminum coated titanium dioxide. The preparation method includes the steps that rutile type titanium dioxide screened to meet the particle size requirement is dissolved in an organic solvent for slurrying, organic zirconium salt is added into slurry for coating, zirconium salt obtained after coating is filtered, dried and dispersed, and filter liquor is cooled, filtered and volatilized and then is recycled; organic aluminum salt is dissolved in an organic solvent to prepare organic aluminum sol, zirconium-coated crystals and organic aluminum sol are in contact in a spraying mode, and zirconium-coated crystals obtained after contact are dried and dispersed again. According to the preparation method, reaction conditions are mostly mild, many washing procedures are omitted, the process is simplified, and modified titanium dioxide which is more uniform in coating effect and has both an inorganic film and an organic film can be obtained at a low cost through the coating method; meanwhile, by treating waste liquor and recycling the treated organic solvents, the cost can be further reduced, and secondary pollution to the environment can be prevented.

The invention discloses an automatic gluing device for ceramic tiles, and belongs to the technical field of building decoration. The automatic gluing device comprises a picking part, an overturning part, a gluing part and a platform. Adsorption and overturning of the ceramic tiles are achieved by utilizing a simple mechanical principle, the workload of manual carrying is omitted, automatic gluing is conducted in cooperation with the gluing part, glue outlet holes arranged in a line can effectively and uniformly coat the ceramic tiles in all directions, so that the coating effect is more uniform, and the ceramic tile glue can be attached to the surfaces of the ceramic tiles as much as possible; and by using the device, ceramic tile gluing can be quickly, accurately, economically and cleanly completed, the construction efficiency and the construction quality are greatly improved, the labor intensity of workers is reduced, and the construction cost is reduced.

The invention discloses a method for coating the surface of a lithium-ion ternary positive electrode material with an oxide. The method comprises the steps of firstly dispersing lithium-ion ternary positive electrode material powder into a certain amount of deionized water; dispersing the powder evenly, adding a certain amount of organic acid or salt and an insoluble metal salt to the powder and reacting for a certain period of time; and drying the treated ternary positive electrode material and carrying out thermal treatment at certain temperature for a certain period of time to obtain an oxide-coated lithium-ion ternary positive electrode material. According to the method disclosed by the invention, a whole-wet method is adopted and the lithium-ion ternary positive electrode material iscoated with liquid, so that the process of coating modification is short, the used raw materials are common, the cost is low, the ternary positive electrode material can be greatly and efficiently modified, the coating degree is uniform and the effect is good.

The invention provides a coating device and method for a waterproof roll coating. The coating device comprises a winding mechanism, a roll coating mechanism, a drying mechanism and a bottom plate. Thewinding mechanism is mounted on the end face of the front portion of the bottom plate. The roll coating mechanism is mounted on the end face of the rear portion of the bottom plate. The drying mechanism is arranged between the roll coating mechanism and the winding mechanism and mounted on the bottom plate. The problems that in order to require uniform coating at present, a spray head large-areaspraying processing mode is adopted, so that an anti-corrosion coating material becomes highly-dispersed spray bodies, the spray bodies are prone to being exposed and dispersed in air, volatilized solvents are often pungent in taste, the processing environment is severe, the physical health of workers is threatened if the processing mode goes on like this, waste of coatings is prone to being caused by spraying, and economic losses are generated are solved; and in addition, natural airing needs to be conducted after spraying, so that the processing time is prolonged, an aired waterproof roll needs to be manually wound and collected, and the labor intensity of workers is increased.

The invention discloses an automatic clothing material surface glue coating device. The automatic clothing material surface glue coating device comprises a supporting frame and a fixed block. Conveying rolls are arranged at the lower end of the supporting frame. A motor is arranged on the outer side of one end of the supporting frame. The supporting frame is transversely provided with a rotary shaft. The fixed block is in threaded connection with the rotary shaft. The upper end of the fixed block is fixedly connected with a T-shaped sliding block. The upper end of the supporting frame is provided with a sliding groove. The T-shaped sliding block is slidably connected with the sliding groove at the upper end of the supporting frame. The two sides of the supporting frame are fixedly providedwith limiting switches. The lower end of the fixed block is fixedly connected with a glue coating device body. The glue coating device body is internally provided with a glue storage cavity and a glue coating cavity. Glue discharge ports are formed at the joint between the glue storage cavity and the glue coating cavity. A partition board is arranged at the lower end of each glue discharge port.One end of each partition board is hinged to the sidewall of the glue coating cavity. Each partition board is internally provided with a sliding groove. An L-shaped connecting rod is slidably connected to the interior of each sliding groove. Supporting bases are arranged at the lower end of the glue coating cavity. The lower ends of the L-shaped connecting rods are rotatably connected with the corresponding supporting bases. A glue coating roller is rotatably arranged at the lower end of the glue coating device body. The automatic clothing material surface glue coating device is reasonable instructure, high in automation degree, uniform in glue coating and high in practicality.

The invention relates to the technical field of water pipe installation, in particular to an installation device for a PVC water pipe connector. Connecting plates are fixedly arranged on the two sides, in the width direction, of each connector clamping plate, wherein the two connecting plates are symmetrically arranged, and every two corresponding connecting plates are fixedly connected under cooperation of multiple fixing bolts and nuts. Multiple water pipe clamping mechanisms coaxially arranged with the connector clamping plates are fixedly installed on the other side of the upper surface ofa worktable, a side plate is telescopically arranged on the surface of the tail end of one side, in the length direction, of the worktable, and the side plate and a water pipe clamping mechanism arecorrespondingly arranged. Threaded pillars are arranged on the side plate in a threaded penetrating manner, and the threaded pillars and the water pipe clamping mechanism are coaxially arranged. A sleeve is fixedly installed at the tail end of the inner side of each threaded pillar, and a rotating disc is fixedly installed at the tail end of the outer side of each threaded pillar. A second slidinggroove is formed in the position, between the water pipe clamping mechanism and the connector clamping plates, on the upper surface of the worktable in the length direction, and a glue spraying mechanism is installed in the second sliding groove in a sliding manner. The installation device has the beneficial effects that time and labor are saved, and installation is convenient.

The invention discloses a carbon coated metal doped lithium titanate composite material as well as preparation and application thereof. According to the carbon coated metal doped lithium titanate composite material disclosed by the invention, the gas generation problem of a lithium titanate material is improved by an appropriate metal doping amount and an appropriate carbon coating amount, so thatthe electronic conductivity of the lithium titanate material is enhanced, and the advantage that the lithium titanate material has long service life is brought into full play. The invention further provides a lithium ion battery. The carbon coated metal doped lithium titanate composite material is utilized as a negative electrode material of the lithium ion battery. The lithium ion battery has good cyclic stability, and the capacity retention ratio of the lithium ion battery can be kept at 90% or more after 8000-week charge-discharge cycles under the 3 C rate.

The invention discloses a solar photovoltaic glass plate coating device which comprises a base, clamping and fixing mechanisms, a first motor, an electric liquid inlet valve and an electric spray valve, self-locking rollers are fixed to the left side and the right side of the lower end face of the base, the clamping and fixing mechanisms are arranged on the left side and the right side of the top of a bearing table, and a suction cup is fixed to the upper side of a suction pump. A bearing frame is arranged on the outer side of the bearing table, a first sliding block is slidably connected to the inner top of the bearing frame, a second sliding block is slidably connected to the interior of a sliding rail, the electric liquid inlet valve penetrates through the top of a bearing plate and communicates with a liquid passing channel, and the liquid passing channel is formed in the bearing plate. The electric spray valve penetrates through the bottom of the bearing plate to communicate with the liquid passing channel, and the electric spray valve is located on the outer side of a rotary disc. According to the solar photovoltaic glass plate coating device, in the process that the electric spray valve is used for spraying coating liquid, the rotating disc rotates, the coating liquid can be evenly dispersed conveniently, and the coating effect is more comprehensive and even.

The invention discloses a preparation method of anhydrous iron phosphate and a preparation method of a lithium iron phosphate carbon composite material, a green vanadium product is purified from titanium dioxide to synthesize an iron phosphate product, and APP is utilized to replace DAP or MAP, so that on one hand, the cost can be reduced to a certain extent, and on the other hand, the pollution can be reduced. In addition, a two-step aging mode or a multi-step aging mode is controlled, and the dehydration temperature and time are adjusted, so that primary particles of iron phosphate can be controlled at a relatively small level of about 100nm, and meanwhile, a relatively normal Fe/P ratio is obtained. The lithium iron phosphate carbon composite material is prepared by adopting the anhydrous iron phosphate, and composite carbon source and composite carbon coating is performed by a rheological phase method, so that the sintering temperature can be reduced, the sanding and sintering time can be shortened, the coating uniformity can be improved, and meanwhile, the electrical property, especially the rate capability, of lithium iron phosphate can be enhanced.