42results about How to "Have density" patented technology

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 present invention provides continuously crimped propylene polymer nonwoven fabrics as well as processes for forming crimped multicomponent propylene polymer fibers by melt-attenuating extruded multicomponent fibers with heated or unheated air wherein the fibers spontaneously crimp without the need for additional heating and / or stretching steps.

The invention relates to an electrical cabinet with a temperature adjusting function. The electrical cabinet with the temperature adjusting function comprises the electrical cabinet, a solar energy supply system mounted at the top of the electrical cabinet and a temperature control system mounted at the upper part of the electrical cabinet. Foaming agent fillers and an external interlayer are arranged in the electrical cabinet. The solar energy supply system comprises a dye-sensitized solar cell, a controller and a storage cell.

The invention discloses toughened environmental-friendly back mesh glue as well as a preparation method and application thereof. A component A is prepared from the following components in parts by weight: 45-65 parts of dicyclopentadiene modified unsaturated polyester resin, 25-40 parts of bisphenol-A epoxy vinyl ester resin, 10-15 parts of hyperbranched unsaturated polyester, 1-2.5 parts of a dispersant, 5-10 parts of a core-shell particle toughening agent, 25-40 parts of spherical fine silicon powder, 15-25 parts of nano calcium carbonate, 0.2-0.8 part of an accelerator and 0.02-0.08 part of a polymerization inhibitor. A component B is prepared from the following components in parts by weight: 10-70 parts of a solidifying agent, 30-40 parts of a blending agent, 30-50 parts of an inorganic filler and 3-10 parts of a stabilizer. After the component A and the component B are mixed, the solidifying agent accounts for 0.5-3.5 percent of the total weight of the mixture. The back mesh glue is small in viscosity, good in permeability, moderate in rheology and low in content of total volatile organic compounds (VOCs); and the mechanical strength, particularly the impact resistance, of a back mesh stone is remarkably superior to that of the existing product.

The invention relates to a micro-machining method of a silicon nitride ceramic component, which relates to a processing technology of a micro-component of a silicon nitride ceramic with high temperature resistance, oxidation resistance and high hardness. The method mainly includes three parts: (1) using hot pressing or plasma discharge sintering technology to pre-sinter the Si powder and control the density at 70-85%; (2) using precision machining or micro electric discharge machining Or photolithography and reactive ion etching and other silicon micromachining techniques are used to micro-process the Si powder pre-sintered body; (3) heat the micro-processed Si powder pre-sintered body parts in nitrogen to cause nitriding reaction to occur, Thus reaction sintering to obtain Si 3 N 1 Ceramic micro components. The invention combines the characteristics of micromachining and reaction sintering of silicon nitride ceramics, thereby realizing the micromachining and micromolding of silicon nitride ceramic microcomponents, and can increase the density by about 22%. It is very suitable for the preparation of microcomponents.

A method for manufacturing a staple fiber based on natural protein fiber, the method comprising the steps of: - providing a protein suspension, - the protein suspension comprising fibrils of said natural protein fiber, - directing the protein suspension through a nozzle (520) onto a surface (500), - drying the protein suspension on the surface for forming a protein based fiber, - extracting the fiber from the surface and providing the staple fiber.

The invention discloses an isotropic graphite material and a manufacturing method. Intermediate-phase carbon microspheres subjected or not subjected to pre-treatment, is moulded into green pressing through cold isostatic pressing and subjected to multi-step carbonation to effectively shorten processing time and obtain isotropic graphite material with excellent isotropic properties, intact and flawless surface and excellent mechanical, thermal and electric properties.