30results about How to "Control coating thickness" patented technology

The invention relates to a method for coating a coat onto a substrate for effectively controlling surface of the coat spraying liquid medium on the substrate through a nozzle, effectively controlling formation of thickens of the coat forming through the liquid medium, and maintaining quality control of the coat with high production efficiency, comprising the following operation steps of: firstly installing a distance sensor 6a-6c, for measuring the distance between a medium layer surface LS forming on substrate 1S and 1P and a nozzle 4; putting a measuring substrate 1S on a work bench 2, and undergoing coat measurement for the measuring substrate 1S through the liquid medium sprayed by the nozzle when a nozzle clamp holder 5 moves forwards related to the work bench, performing measurementoperation by the distance sensor when the nozzle clamp holder moves backward related to the work bench, starting a nozzle positioner 3a-3c according to a result of measurement operation performed by the distance sensor, as the device setting nozzle position for forming suitable coat, so as to coat the liquid medium L onto the substrate 1P.

The invention relates to a coating device used for a polymer conduit surface. The coating device is characterized in that: the coating device comprises a first support plate; the first support plate is provided with a plurality of through holes and a groove; the first support plate is connected to a first support pillar through a first driving mechanism; a liquid storage tank containing a coating liquid is disposed right below the first support plate; a second support pillar is disposed in parallel with the first support pillar; a second support plate is disposed at the second support pillar through a second driving mechanism; the second support plate is provided with a plurality of limiting holes used for limiting a conduit to be coated; the second support plate is provided with a clamping and fixing device used for positioning the conduit to be coated; the second support pillar is also provided with a baffle plate used for controlling the length penetrating through the second support plate of the conduit, and the baffle plate is rotatablely connected to the second support pillar. A novel coating method is provided. The thickness of the coating is uniform. The coating has strong adhesive force with the surface of the conduit. Waste of the coating liquid is avoided. The coating process is free of contamination to the inner wall of the conduit, thus guaranteeing production sanitation and safety.

The invention provides a lithium ion battery anode functional coating and a preparation method thereof. A dispersing agent NMP (N-methyl-pyrrolidone) is stirred by a planetary stirrer at a high speed till the temperature reaches 40 to 50 DEG C; a certain proportion of a binding agent PVDF (Polyvinylidene Fluoride) is added to enable the solid content of a binding agent solution to be 1.2 to 3.5 percent; low-speed revolution is performed and then high-speed rotation is started; cold circulating water is received to control the temperature of the slurry below 50 DEG C; stirring is preformed for 2 to 6 h; a carbon black conductive agent (conductive carbon) is added to enable the solid contend of the slurry to be 20 to 30 percent; stirring is performed for 2 to 4 h; the slurry is transferred into a high-efficiency dynaflow ultrasonic slurry mixer to be subjected to ultrasonic dispersion for 1 to 2 h; after the preparation is finished, the slurry passes through a 200-mesh screen stencil and is sprayed through a spraying machine, wherein the spraying thickness is controlled within 3 to 5 Mum; and after the spraying is finished, a coated pole piece is baked for 12 to 14 h at 110 plus or minus 3 DEG C, wherein dry nitrogen is filled for replacement once each two hours, so as to obtain the lithium ion battery anode functional coating. The replacement of a current collector with an anode aluminium foil material by a current collector with the functional coating can greatly improve the electrochemical properties of lithium ion batteries.

The invention discloses a spinneret for preparing an enhanced hollow fiber membrane and a membrane preparation method. The spinneret comprises a primary coating spinneret. A pre-coating device is arranged on the baffle of the primary coating spinneret; the pre-coating device comprises a cover plate and a pre-coating cavity arranged below the cover plate; the bottom of the cavity wall of the pre-coating cavity is arranged on the baffle; an air inlet hole is arranged in the cover plate; an atomizing hole is arranged in the surface in contact with the cover plate of the pre-coating cavity; the atomizing hole is communicated with the air inlet hole; a liquid inlet hole is arranged in the cavity wall of the pre-coating cavity; a gas-liquid discharge hole is arranged in the lower part of the pre-coating cavity; a liquefied droplet leakage-proof table is arranged at the bottom of the pre-coating cavity on the baffle, a positioning hole and a fixing hole are arranged in the cover plate and thewall of the pre-coating cavity in the thickness direction respectively, a rope penetrating hole is arranged in the middle of the cover plate and in the top of the leakage-proof table respectively, and the positioning hole, the fixing hole and the rope penetrating hole correspond to the positioning hole, the fixing hole and the rope penetrating hole respectively of the primary coating spinneret. The enhanced hollow fiber membrane with super-strong falling resistance and high bursting strength can be prepared.

The invention discloses a method for preparing a boride solid solution modified silicon-based coating on the surface of a carbon material, which belongs to a method for preparing an anti-oxidation coating on the surface of a carbon material. First configure boride solid solution NB with controllable content 2 Modified silicon-based composite ceramic slurry, wherein N=Zr x Ta 1‑x , Hf x Ta 1‑x or Zr x f 1‑x , x=0~1; Secondly, brush, dip or spray NB on the surface of the carbon material substrate with SiC inner coating 2 The pre-set layer of slurry is then heat-treated and sintered to form a coating. The present invention controls the solid solubility of the solid solution phase in the coating by using the boride solid solution powder as the raw material; through the regulation and design of the composite ceramic slurry powder ratio, the component content of the coating can be controlled; by brushing , dipping or spraying times control, can realize the control of coating thickness. After the pre-set layer is heat-treated in the later stage, the density of the coating and the bonding strength of the interface of the inner coating can be improved. The invention has simple preparation process, dense and uniform coating, and low production cost, and is suitable for carbon material parts with various shapes and sizes.

The invention discloses a novel cataplasm coating forming device. The novel cataplasm coating forming device mainly comprises a device main body, a constant-temperature discharging hopper, a constant-temperature speed control wheel, a discharging control opening, a cloth releasing device, a double-compression-roller feeding device, a longitudinal cutting device, a transverse cutting device, a control panel and a conveying device; the cloth releasing device, the constant-temperature discharging hopper, the double-compression-roller feeding device and the longitudinal cutting device are sequentially arranged on the upper top surface of the device main body from left to right, the transverse cutting device is fixed at the upper end of the right side surface of the device main body through a lower supporting plate, and a water bath interlayer is arranged on the periphery of the outer side of the constant-temperature discharging hopper; and the constant-temperature speed control wheel is arranged below the inner part of the constant-temperature discharging hopper, and the discharging control opening is formed in the bottom end of the constant-temperature discharging hopper. According tothe novel cataplasm coating forming device, structure is simple, and design is reasonable; the parameters of the paste content, the coating width, and the coating thickness are realized; and more uniform and smooth of the coating are guaranteed.