82results about How to "Coating thickness controllable" patented technology

The invention discloses silica / tin oxide composite nanoparticles with nuclear shell structure which contain nano-silica inner cores and a tin oxide shells which are coated on the surface of the nano-silica inner cores. The invention also discloses a preparation method of the silica / tin oxide composite nanoparticles with nuclear shell structure, comprising the following steps: adopting nano-silica, soluble tin salt and amine precipitant as raw materials, dispersing the materials, preparing a precursor and finally obtaining the composite nanoparticles through drying and roasting. The silica / tin oxide composite nanoparticles have wider adjustment range for extinction wave length and effectively improve the usability of the SnO2 nanometer material. The preparation method of the invention has cheap cost, simple process, uniform product size, controllable thickness and high proportion for forming and coating films on the surface of silica with tin oxide.

The invention relates to a weather-resistant heavy-duty anticorrosive powder coating comprising the raw materials in parts by weight: 450-500 parts of hydrogenated bisphenol A epoxy resins, 50-99 parts of curing agents, 0.5-1 part of catalysts, 50-100 parts of zinc-rich fillers, 10-20 parts of self-repairing conductive macromolecule compounds, 190-240 parts of weather-resistant pigments and fillers and 30-50 parts of additives. A preparation method of the coating comprises the steps of putting the raw materials into a high-speed mixer, putting in an extruder after subjecting to dry mixing, carrying out fusion, mixing, cooling and preforming at an extrusion temperature of 80-90 DEG C, grinding by utilizing a grinder, grading, sieving and packaging to obtain finished products of the powder coating. The powder coating disclosed by the invention is mainly applied in the coating of outdoor heavy-duty anticorrosive environments, has excellent anticorrosive performance and weather-resistant performance and is an ideal heavy-duty anticorrosive coating capable of being used for outdoors. Proved by customer use and detection of relevant authoritative departments, the anticorrosive performance and the weather-resistant performance of the coating are excellent and can be completely up to indexes of imported similar products and certain indexes even exceed those of foreign products; the price of the coating is superior than that of the imported products; and therefore, the coating is well received by customers.

The invention discloses a metal-organic framework material coated ternary positive electrode material and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly dispersing a ternary positive electrode material in a mixed solution of absolute ethyl alcohol and N, N-dimethyl formamide; (2) sequentially adding zirconium salt and an organic ligand into the dispersion liquid under a stirring condition, and performing complete stirring; (3) transferring the uniform dispersion obtained at the step (2) into a reaction kettle, and carrying out solvothermal reaction; (4) taking out the reaction kettle, collecting a bottom product, performing centrifugal washing, and drying the centrifuged product to obtain the metal-organic framework material coated ternarypositive electrode material. According to the method provided by the invention, a layer of metal can be uniformly coated on the surface of the ternary positive electrode material, and the thickness of the coating can be controlled. Through the ternary positive electrode material modified on the surface of the organic framework material, the method can effectively reduce corrosion and decomposition of the ternary positive electrode material in an electrolyte and improve the cycle stability of a battery.

The invention discloses a fabrication method of a quantum dot lens-type direct LED backlight source. The method comprises the following steps of firstly preparing a fluorescent adhesive A and dropping the fluorescent adhesive A into an LED bracket; preparing a quantum dot fluorescent adhesive B and coating the surface of an LED lens with the quantum dot fluorescent adhesive B and then coating the surface of the quantum dot fluorescent adhesive B with an ultraviolet-curing adhesive protection layer. A quantum dot fluorescent material is adopted by the quantum dot fluorescent adhesive B and the half-wave width is small, so that the color gamut value of the LED backlight source can be greatly improved and the color gamut value can reach over 96% of NTSC. Quantum dot fluorescent powder is prepared in the fluorescent adhesives, so that the problem of agglomeration and failure of the quantum dot fluorescent powder is solved. The fabrication method is simple in process and low in cost, and industrial production is easy to implement. Meanwhile, the quantum dot fluorescent adhesive B coats the LED lens, and is coated with packaging glue for protection, so that erosion of moisture and oxygen to the quantum dot fluorescent material is reduced, meanwhile, the quantum dot fluorescent material is prevented from being in direct contact with a light-emitting chip and being affected by a high temperature of the light-emitting chip, and the reliability of a lamp bead is improved.