37results about How to "Good anti-oxidation" patented technology

The invention relates to a novel deodorizing device. According to the novel deodorizing device, four threaded mounting studs are uniformly distributed on a rear shell at intervals along the peripheral direction, a screw is mounted in each threaded mounting stud, so that the rear shell is connected to a control circuit board in a meshing manner, an ozone dissipation hole is formed in a front shell, a small fan and air vent holes are also arranged, ozone produced by an ozone generator escapes from the ozone dissipation hole, and the threaded mounting studs adopt the multi-section compound drawing angles. According to the novel deodorizing device, the ozone generator is arranged, directly contacts the air, and is of open type, so that the ozone production efficiency is high, the heat dissipation is extremely good, the produced ozone has extremely good diffusibility and good deodorizing effect, and the deodorizing efficiency is improved; in addition, the threaded mounting studs adopt the multi-section compound drawing angles, the structure enables a mold to be smoothly drawn out after a workpiece is formed, the side wall surface of the workpiece is prevented from being damaged, the areas of round holes in the tops of the threaded mounting studs can not be too large, so that the artistic appearance can not be influenced, the stability of the workpiece is also prevented from being influenced, and the threaded mounting studs are simple in structure, and convenient to manufacture, use and mount.

The invention discloses a high-temperature smoke exhaust fan, which solves the problems that in the prior art, due to environments of high temperature, thick smoke and the like, the service life of the fan is shortened, or even safety accidents can be caused. The high-temperature smoke exhaust fan disclosed by the invention comprises a fan case, wherein a protection layer coats the inner wall of the fan case and is formed by spraying protection paint; the protection paint is prepared from the following raw materials in parts by weight: 70 to 95 parts of high-temperature-resistant resin, 10 to15 parts of nanometer graphene, 5 to 10 parts of nanometer carbon tubes, 5 to 10 parts of polytetrafluoroethylene, 0.1 to 1 part of asbestos fiber, 0.1 to 1 part of lanthanum oxide and 0.1 to 1 part of degassing agents. The high-temperature smoke exhaust fan disclosed by the invention has the advantages that the design is scientific; the structure is simple; and the inner wall of the fan case is coated with one protection layer, so that the effects of promoting heat dissipation, preventing corrosion and resisting oxidization are effectively achieved, and the service life of the fan is ensured.

The invention discloses a high-temperature lubricating agent and a preparation process thereof. The high-temperature lubricating agent comprises the following components in parts by weight: 25-35 parts of graphite micro powder, 0.1-0.5 part of acid dispersant, 5-10 parts of xanthan gum, 2-10 parts of hexagonal boron nitride, 0.5-1 part of lithium-based bentonite, 10-20 parts of aluminium dihydrogen phosphate powder, 0.1-0.5 part of kathan and 90-95 percent of purified water, wherein the surface of the graphite micro powder is subjected to nickel-plated treatment. The preparation process for preparing the high-temperature lubricating agent comprises the following steps of: preparing nickel-coated graphite micro powder; and preparing a pre-mixed solution; and adding the hexagonal boron nitride, the graphite micro powder obtained in the first step and the pre-mixed solution prepared in the second step into a ball milling machine to obtain the high-temperature lubricating agent. The invention aims at providing the high-temperature lubricating agent capable of providing high-temperature oxidation resisting protection for the surface of a sliding plate and the preparation process of the high-temperature lubricating agent.

The invention relates to a device and method for in-situ preparation of refractory metal carbide nanowires / tubes by template method and thermal evaporation technology. The template used is carbon nanotubes (CNT), and the nanotubes are placed in a horizontal tube furnace, and then Evaporate the refractory metal carbide precursor into a tube furnace, and at a certain temperature, use argon or nitrogen as the dilution gas and carrier gas, and then reduce it with hydrogen to prepare refractory metal carbide nanowires in situ / Tube. The method of the invention is simple to prepare, has no pollution, is safe and stable, can greatly increase the output of the carbide nanowire tube, and effectively avoids damage to the modified matrix due to the introduction of external factors. It can be widely used in ceramic matrix composite materials (carbon / carbon, carbon / ceramic, magnesium-based, aluminum-based composite materials), resin-based composite materials, field emitter shoe materials and hard alloys, and has good economic and social benefits .

The invention discloses a method for producing 1'-acetoxyl chavicol acetic ester, comprising the following steps of: by using a multifunctional reaction kettle provided with a purpose-made kettle bottom valve as a reactor and using a purpose-made filter as refining equipment, reacting hydroxyl benzaldehyde with propenyl lithium to generate 4-(1-hydroxyl-4-butene)-phenol, then performing acetylation reaction, and refining and drying to produce the 1'-acetoxyl chavicol acetic ester. Compared with the traditional method for producing the 1'-acetoxyl chavicol acetic ester by using synthesis equipment, the production method of the 1'-acetoxyl chavicol acetic ester has the advantages of few reaction steps, mild reaction condition, convenient refining, simple operation, and good heat preservation, oxidation prevention, tightness and environmental protection effect of the used purpose-made equipment and complete reaction, and the reaction equipment has the advantages of simple structure, convenient operation, easy disassembly, assembly and cleaning, high filtering efficiency, reaction quality and yield and stable product quality.