115results about How to "Avoid uneven coating" patented technology

According to the present invention, since the gravure roller with no load has a radial run out of 15 μm or less in all places of a pattern part in which cells are formed (the gravure plate cylinder) on the surface of the gravure roller, liquid accumulations (beads) are hardly affected by the radial run out of the roller surface, thereby making it possible to prevent coating nonuniformity.

Belonging to the technical field of lithium ion battery anode materials, the invention relates to a method for uniform carbon coating on a lithium iron phosphate surface. The method includes the steps of: (1) preparation of an emulsion: preparing an organic carbon source and water into an aqueous solution, conducting heating to 50-100DEG C, adding an additive, and performing stirring to form an emulsion; (2) coating of the lithium iron phosphate surface with the organic carbon source: adding spherical iron phosphate into the emulsion, performing mixing for 0.5-8h to obtain a rheological body, and conducting drying to obtain iron phosphate powder; and (3) preparation of a lithium iron phosphate/carbon composite cathode material: mixing iron phosphate powder with a lithium source according to a Fe-Li mole ratio of 1:1-1:1.2, placing the mixture into an argon protective atmosphere sintering furnace, conducting heat preservation at 250-400DEG C for 2-6h, then raising the temperature to 550-700DEG C and performing heat preservation for 6-16h, and carrying out furnace cooling and sieving so as to obtain the lithium iron phosphate/carbon composite cathode material. The method provided by the invention has the advantages of stable process, simplicity and easy control, low cost, safety and environmental protection, high utilization ratio of the organic carbon source, high volumetric specific energy of the material, and easy industrialization, etc.

A dry nail tip appliqué for applying nail enamel to a nail tip. The nail tip appliqué is configured to conform to the size and shape of a respective nail tip and allows for a convenient and neat application of a French-style manicure.

A peripheral surface of a coating rod has an area where grooves (convex portions) are formed. This area is ground by a grinding apparatus by which a maximum height Ry of the rod surface is adjusted to 15 μm or less. Further, a ratio of D/W is adjusted to 0.01 or more, wherein D is a total distance of the convex portions of the rod actually abutting on a web in an axial direction of the rod, and W is a coating width of the web. Furthermore, straightness of the rod is adjusted to 30 μm or less per 1 m, and roundness of the rod is adjusted to 10 μm or less. Micro-projections are removed by grinding so that scratches of a coating surface are prevented from occurring. Coating unevenness is prevented by improving the straightness and the roundness.

The invention relates to a novel silica membrane for packaging a solar cell module and a preparation method. The preparation method of the silica membrane comprises the following steps: dissolving 15 to 50 parts of silicone resin into 30 to 50 parts of silicone oil, and adding 5 to 15 parts of curing agent, 0.5 to 1 part of catalyst and 1 to 10 parts of reinforcing agent, and preparing a membrane forming rubber solution; and smearing the rubber solution onto a base material by utilizing a smearing device, and heating and curing for 1 to 5 min at 120 to 160 DEG C to form a membrane. The silica membrane prepared by the invention is used for packaging a solar cell, and compared with the traditional EVA rubber membrane, the ultraviolet permeability and aging resistance are higher, and the high temperature and low temperature resistance and the adhesive property are excellent.

The invention discloses a threaded catheter with a coating. The threaded catheter comprises a catheter body, a balloon is arranged at the position of the catheter body close to the front end of the catheter body, threaded projections are arranged at the position of the outer surface of the catheter body close to the balloon to form a threaded section, grooves are formed in the threaded section along the length direction of the catheter body and the periphery of the threaded section at intervals, a Se-SiO2 coating is sprayed on the periphery of the threaded section of the catheter body, nano-Se-SiO2 materials and chitosan are mixed to form the Se-SiO2 coating, and porous SiO2 wraps Se particles to form the nano-Se-SiO2 materials. According to the threaded catheter with the coating, on one hand, the coating area of the coating is increased, on the other hand, oxidative stress of a prostate wound surface is restrained, the toxic dose caused by rapid releasing of the Se particles is avoided, and rapid rehabilitation of postoperative prostate is facilitated.

The present invention relates to a copper-indium-gallium-selenium co-evaporation linear source apparatus and a use method thereof, particularly to a segmented copper-indium-gallium-selenium co-evaporation linear source apparatus with adjustable curvature, and a use method thereof. The apparatus comprises plural sets of parallel linear sources, wherein the linear source is a segmented linear source with adjustable curvature. According to the present invention, the problem that drooping due to glass substrate self-weight causes change of the distance between the glass substrate and the liner source so as to cause the non-uniform plated film is well solved with the apparatus, the process effect is improved, and the apparatus has characteristics of simple structure and easy performing, and is suitable for industrial production.

The invention discloses a coating method of a nickel cobalt lithium manganate ternary positive electrode material, and belongs to the technical field of preparation of lithium ion battery electrode materials. The method comprises the following steps of: 1) adding the nickel cobalt lithium manganate ternary positive electrode material into a cavity of a fluidized bed for fluidization to obtain a fluidized nickel cobalt lithium manganate ternary positive electrode material; 2) atomizing a coating solution at an atomizing port of the fluidized bed to obtain an atomized coating solution; and 3) adding the atomized coating solution into the cavity of the fluidized bed, carrying out mist flow coating on the fluidized lithium nickel cobalt manganese oxide ternary positive electrode material, anddrying to obtain a coated lithium nickel cobalt manganese oxide ternary positive electrode material. The catalyst prepared by the method is high in activity, easy to separate after reaction, reusable,simple in preparation process and low in cost.

In a process for manufacturing a coated steel sheet such as a coated electromagnetic steel sheet using a water-based coating liquid containing an organic resin, to perform steps subsequent to an annealing step continuously at high speed without causing appearance defects such as coating unevenness; to provide an electromagnetic steel sheet having an insulating film thereon, in which properties of the film are satisfactory, superior weldability and punchability can be obtained without deteriorating the space factor, and the satisfactory film properties can be maintained even if the electromagnetic steel sheet having the insulating film thereon is temper-rolled. A coating liquid is applied onto an untreated steel sheet. The applied liquid is heated on the side close to the steel sheet in such a manner that the time elapsed until the steel sheet temperature is increased to 100° C. after the application is completed is 10 seconds or less, thereby drying the coating liquid. The steel sheet temperature is further increased to a predetermined temperature, thereby forming a coating film. When insulating films for electromagnetic steel sheets are formed, the coating liquid preferably further contains a water based inorganic component.

The invention relates to a urinary catheterization device for promoting wound healing and facilitating drainage. The urinary catheterization device includes a catheter body, and the two ends of the catheter body are respectively a head end and a tail end; The tail end of the urinary catheter body is provided with three cavities, namely the water injection cavity, the drug injection cavity and the liquid discharge cavity; a balloon is provided on the urinary catheter tube body near the head end; The outer surface of the tube is provided with striped protrusions close to the position of the balloon, and the striped protrusions are radially distributed along the outer peripheral surface of the catheter tube and form a striped section, and the adjacent striped protrusions form a The diversion groove is distributed axially along the tube body of the urinary catheter, and the outer periphery of the striped section of the tube body of the urinary catheter is also coated with a coating. Its advantages are as follows: increasing the surface area of ​​the outer coating of the urinary catheter, so that the coating material can obtain a longer action time, thereby achieving a stronger effect, and at the same time, it can drain urine and avoid infection.

The invention relates to the field related to construction, and particularly discloses a cement troweling device for a building foundation. The cement troweling device for the building foundation comprises a vehicle frame, a cement mixing barrel is mounted on the vehicle frame, a cement feeding mechanism and a cement troweling mechanism are mounted on the vehicle frame respectively, the cement feeding mechanism includes a cement conveying pump and a feeding rack, the feeding rack is provided with a feeding channel, a feeding roller shaft is mounted in the feeding channel in a built-in mode, aspiral feeding auger is mounted on the feeding roller shaft, a lifting frame is mounted in the cement troweling mechanism in a built-in mode, a work frame is mounted at the bottom of the lifting frame, a troweling roller is mounted on the work frame, the lifting frame is externally connected with an outer edge rod, a threaded sleeve is mounted at the rod end of the outer edge rod, a lifting screwis arranged at the side edge of the cement troweling mechanism, and the threaded sleeve is arranged on the lifting screw lifting in threaded fit in a sleeving mode. According to the cement troweling device for the building foundation, uniformity of spreading of cement can be improved, and the cement troweling device for the building foundation adapts to cement foundations of various heights

The invention discloses a lithium ion battery cathode material and a preparing method thereof, and particularly relates to a phosphate-coated lithium ion battery cathode material and a preparing method thereof. The chemical constitution of a coating layer is M1M2PO4, wherein the M1 is Ni, Mn and Co, and the M2 is Cr, Al, Mg, Fe, Ti, V, Ga, Cu, Zn, Be, Sc, Ca, Sr, Ba, Zr, Li and La. The cathode material can be normally used under a high cut-off voltage for charging (4.4-4.7 V), and has high thermal stability. A lithium ion battery using the cathode material has a higher volume energy density and better cycle performance. The preparing method of the cathode material includes mixing a cathode material core and a salt solution at least comprising Ni, Mn or Co, adding a phosphate, reacting, forming the phosphate coating layer at least comprising the Ni, the Mn or the Co on at least a part of the surface of the cathode material, and performing heat treatment to obtain the lithium ion battery cathode material.