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242results about How to "Improve close contact" patented technology

Vacuum evaporation system capable of controlling evaporating airflow distribution and components

The invention relates to a vacuum evaporation system capable of controlling evaporating airflow distribution and components. The system comprises an evaporation gun, a high-temperature evaporation crucible and a storage tank filled with an evaporating material, wherein a nozzle with an upper conical surface and a lower conical surface is formed on the evaporation gun, and a movable airflow guidance plug is arranged inside the nozzle; a substrate to be evaporated is opposite to the front of the nozzle; the evaporation gun is connected with the high-temperature evaporation crucible which is provided with a cross baffle through a heat pipeline or a surge flask, and the other side of the crucible is connected with the storage tank through a pipeline which is provided with a feed valve; heating coils are arranged on the evaporation gun, the heat pipeline, the high-temperature evaporation crucible and the outer wall of the pipeline, and a heat coil is arranged on the outer wall of the storage tank as well; the evaporating material in the storage tank is delivered into the high-temperature evaporation crucible through the feed valve and the pipeline, so that the evaporating material to be evaporated is immediately turned to be vapor delivered to the evaporating gun; and the volume and the direction of the vapor can be controlled by changing the relative position of the airflow guidance plug and the nozzle, and the vapor is evaporated to the substrate to form an evaporating film, which is uniform and has set area and multiple components. The vacuum evaporation system has simple structure, can improve the utilization rate of the organic evaporating material, and can improve the production efficiency.
Owner:SHANGHAI UNIV

Solid polymer membrane-type water-electrolysis apparatus

A solid polymer membrane-type water-electrolysis apparatus according to the present invention includes a solid polymer electrolyte membrane, an oxygen electrode mounted in contact with one side of the solid polymer electrolyte membrane, a hydrogen electrode mounted in contact with the other side of the solid polymer electrolyte membrane, separator plates mounted adjacent the outsides of the oxygen electrode and the hydrogen electrode and serving as current collector plates having passages for water and generated gasses, fixing plates disposed outside the separator plates and made of a non-conductive material, and reservoirs disposed outside said fixing plates for storing water and the generated gasses. The fixing plates include pressing members build therein for pressing the oxygen electrode and the hydrogen electrode against the solid polymer electrolyte membrane, and flow passages are included in the pressing members. The reservoirs are fixed integrally by tie bolts by clamping the solid polymer electrolyte membrane, the oxygen electrode, the hydrogen electrode, the separator plates and the fixing plates together from outside the fixing plates. Further, the reservoirs have water supply bores provided at locations higher in level than the position of the water electrolysis level, and discharge bores for discharging the generated gasses. In this apparatus, storage tanks for the produced oxygen and hydrogen gasses are formed integrally into a compact structure. Thus, the apparatus is convenient for movement and preservation, and the oxygen and hydrogen gasses stored can be brought into a pressure equal to or higher than the atmospheric pressure and supplied to a remote place.
Owner:DAIDO METAL CO LTD

Hollow structure potassium magnesium titanate whisker material and method for preparing the same

The invention relates to a hollow structure potassium magnesium titanate whisker material and a method for preparing the same. The technical scheme is that the method comprises evenly mixing a titanium-containing raw material, a magnesium-containing raw material and a binding agent, performing forming, performing heat treatment and then grinding the mixture to obtain a material A with the particle size of 0.088-1 mm and a material B with the particle size smaller than 0.088 mm; evenly mixing a potassium-containing raw material, a titanium-containing raw material and a binding agent, performing forming, performing heat treatment and then grinding the mixture to obtain a material C with the particle size smaller than 0.088 mm; evenly mixing the material A, the material B, the material C and a potassium-containing raw material, performing heat treatment and then grinding the mixture to obtain a ground material; finally adding the material C, the potassium-containing raw material and water to the ground material, mixing the mixture, pressing the mixture into green bodies, drying the green bodies, performing heat treatment, and then performing washing, filtration and drying to obtain the hollow structure potassium magnesium titanate whisker material. The external diameters of whiskers of the prepared hollow structure potassium magnesium titanate whisker material are 0.1-5 microns, the internal diameters of the whiskers are 0.05-1 micron, and the lengths of the whiskers are 3-30 microns. The hollow structure potassium magnesium titanate whisker material is high in crystallinity and uniform in size.
Owner:WUHAN UNIV OF SCI & TECH

High-infrared reflectivity high-aluminum light fire-resistant thermal insulating material and preparation method thereof

The invention relates to a high-infrared reflectivity high-aluminum light fire-resistant thermal insulating material and a preparation method thereof. According to the technical scheme of the High-infrared reflectivity high-aluminum light fire-resistant thermal insulating material and the preparation method thereof, 20-40 wt% of potassic raw material, 50-70wt% of titaniferous raw material and 5-10 wt% of binding agents are uniformly mixed, grinding is conducted after molding and thermal treatment are conducted, and A material with particle size ranging from 0.088-1 mm and B material with particle size smaller than 0.088 mm are obtained. 20-40 wt% of alumina particles, 10-25 wt% of alumina fine powders, 5-15 wt% of A material, 5-15 wt% of B material, 5-15 wt% of aluminiferous raw material and 2-10 wt% of potassic raw material are used as mixture, water containing 2-8 wt% of the micture are added, a green body is made by stirring, drying is conducted, cooling is conducted after the thermal treatment is conducted, the green body is soaked with water, then drying is conducted, and the high-infrared reflectivity high-aluminum light fire-resistant thermal insulating material is obtained. The high-infrared reflectivity high-aluminum light fire-resistant thermal insulating material has the advantages that the volume density is low, the compression strength is high, and the high-temperature heat conductivity coefficient is low. The high-infrared reflectivity high-aluminum light fire-resistant thermal insulating material can also be applied to the heat insulation field within 1300 DEG C for a long time.
Owner:苏安能建筑新材料(苏州)有限公司

Cooking vessel processing method and cooking vessel provided thereby

The present invention relates to a cooking vessel processing method and a cooking vessel provided thereby, and more specifically, to a cooking vessel processing method, which involves forming a base-coating layer over a base that is formed at the bottom of the cooking vessel; forming a printing layer over the base-coating layer by pad printing or screen printing; and forming a top-coating layer over the printing layer, and to a cooking vessel provided by the processing method. Conventional cooking vessels commonly use fluorine resin based materials as a non-stick coating material, but they have a weak surface strength (H 2~3) and the coating comes off during use or can be plasticized at high temperature (400? or above), thereby deforming the base materials.; However, a ceramic coating method using a sol-gel technique provides a high surface strength (H 8~9) and a coating provided thereby does not come off even when cleaned with a scrubbing sponge or pad or scraped down by a metal spatula such that a cooking vessel having such a coating can be washed with water and used continuously in a hygienic manner. Further, the coating provided by the sol-gel technique gets plasticized at a low temperature (200? or below), thereby preventing the base materials from being deformed, and the coating is possible over a variety of materials.; In the cooking vessel thus configured according to the present invention, the printing layer formed over the base-coating layer has various patterns, and the color of the printing layer changes depending on a heating temperature being transferred to the cooking vessel, which in turn helps a user determine the temperature being transferred to the cooking vessel with the naked eye. In addition, the top-coating layer formed over the base-coating layer contains a blend of magnetic elements such as iron, magnesium, cobalt and the like, and displays various patterns on the top of the cooking vessel depending on the angle of view and attracts the interest of users.
Owner:河相薰

Rolling connection method for dissimilar refractory metal molybdenum and stainless steel composite board

A rolling and connecting method of heterogeneous refractory metal molybdenum and stainless steel clad plates relates to a composition method of a heterogeneous refractory metal molybdenum and the stainless steel clad plate, aiming at the problems that owing to the great difference between the physical properties of molybdenum and stainless steel, the welding stress is high, great amount of intermetallic compounds with high hardness and great brittleness can be easily produced due to direct connection, and the impact ductility of molybdenum is low in the condition of low temperature, etc. The method comprises the steps that: the connecting surface of a stainless steel plate and a molybdenum plate is milled to be flat; after the acid cleaning of the stainless steel plate, the molybdenum plate and purple copper foil, the purple copper foil is placed and fixed between the stainless steel plate and the molybdenum plate to form the clad plate which is then placed into a vacuum chamber; the vacuity is (1 to 3) multiplied by 10<-3>Pa, the heating temperature is 850 to 1050 DEG C, and the heating speed is 300 to 600 DEG C/h; after the insulation for 10 to 45 minutes, the clad plate is rolled and connected; the rolling temperature is 850 to 1050 DEG C, the compression rate is 15 to 35 percent and the rolling speed is 0.038 to 0.2m/s; the clad plate after being rolled is cooled to be below 200 DEG C in vacuum and then the clad plate is taken out. The method can realize the purpose of the high strength connection between the molybdenum, the ductility of which is low in the condition of low temperature, and the stainless steel.
Owner:HARBIN INST OF TECH
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