37results about How to "Barrier corrosion" patented technology

The invention relates to a construction method based on a shield method for an anti-seepage anticorrosion sewage pipe segment lining. The method comprises the following steps that (a) holes in shield segments and gaps between the segments are blocked through epoxy resin; (b) the inner cambered faces of the shield segments are polished to expose inner pores of the shield segments; and (c) polyaniline / epoxy resin mixed coating is sprayed on the inner cambered faces of the shield segments and cured to form protecting coatings. Through the construction steps of epoxy resin blocking, shield segment inner cambered face polishing and protecting coating forming through curing, the construction process is more economical, simpler and rapider, the effective utilized area in pipes is increased, flow resistance of the coatings to sewage is smaller, and the pollution discharge speed is increased. In addition, the protecting coatings have excellent film-forming performance and corrosion resistance and can effectively resist corrosion of acid, alkali and salts in the sewage pipes to the reinforced concrete segments.

The invention relates to a marine atmosphere control type vegetable and fruit fresh-keeping storehouse which comprises an airtight refrigeratory, a refrigeration drier, a humidifier and a nitrogen making machine. The fresh-keeping storehouse is provided with a storehouse door, a storehouse plates and a door lock, wherein every two adjacent storehouse plates are connected through a locking part, a PVC plug is arranged at the position of a lock hole of each locking part, a silica gel sealing strip is arranged on the seam of the outer surfaces of every two adjacent storehouse plates, and a foaming sealing layer is arranged on the contact surface of every two adjacent storehouse plates. Due to the fact that the silica gel sealing strip is arranged on the connecting surface of every two adjacent storehouse plates and a sealing glue layer is arranged on the connecting seam of every two adjacent storehouse plates, leakage between the storehouse plates is effectively prevented. A wire mesh cement layer, a stainless steel plate layer and a damp-proof plywood layer are sequentially arranged between the storehouse plate on the bottom of the refrigeratory and a deck of a ship, the wire mesh cement layer effectively guarantees the airtightness of the bottom of the refrigeratory, the stainless steel plate layer and the damp-proof plywood layer effectively prevent seawater from corroding the bottom of the refrigeratory, and the service life of the storehouse plates is prolonged.

The invention discloses a method for treating the base of a corrosion-resistant steel silo; it relates to the technical field of steel silo equipment and includes the following steps: (1) cleaning and polishing; (2) pretreatment of the base of the steel silo; (3) preparation of a coating solution; ( 4) Coating treatment; in the method of the present invention, after the pretreatment liquid is coated on the surface of the steel silo base, a dense and uniform covering film can be formed, and the covering film formed by the pretreatment liquid in the present invention on the surface of the steel silo base Thick and not easy to damage.

The invention provides a manufacturing method of an electrolytic manganese metal alloy lead-plastic composite anode. The alloy lead-plastic composite anode comprises a conductive rod, a copper bar embedded inside the conductive rod and a male tab at the lower part, wherein the materials for fabricating the male tab comprise the following ingredients (by weight ratio): 0.06-0.10% of silver Ag, 0.1-0.4% of stibium Sb, 1-3% of stannum Sn, 0.3-0.6% of arsenic As, 0.1-0.3% of calcium Ca, 0.1-0.3% of strontium Sr and the balance of lead Pb. By adopting the method, an anode product is mainly prepared by optimizing an alloy element formula, and then a layer of tightly wrapped anti-corrosive protecting coating is formed on the three-item interface (the three-item interface refers to a juncture interface of an electrolyte surface, air and an anode plate) in an injection molding manner. Thus, corrosion to the lead alloy caused by chlorine and fluorine in the electrolyte at the three-item interface can be avoided.

The invention discloses a casting blank oxidation resisting coating and a spraying method thereof. The casting blank oxidation resisting coating is characterized in that the casting blank oxidation resisting coating is composed of main components including silicon nitride or silicon carbide or silicon nitride plus silicon carbide and iron, and other components including one or more of Al2O3, SiO2, MgO and Cr2O3; the oxidation resisting coating is sprayed at high temperature in a powder electrostatic mode, a double-layer protection structure for a low melting point glass phase and a ceramic phase is formed on the surface of a casting blank in the heating process, oxidation of the casting blank by burner gas and corrosion of the casting blank by the low melting point glass phase can be effectively restrained, and the steel yield is remarkably improved.

The present application discloses a monolithic catalyst. The monolithic catalyst includes a carrier and an active material loaded on the carrier; the active material includes nitrogen-doped carbon nanowires wrapping tricobalt tetroxide particles. The application also discloses a preparation method of the monolithic catalyst. The cobalt trioxide nanowires in the monolithic catalyst are wrapped by a nitrogen-doped carbon layer, and the product has good quality, high conductivity and long service life.

The invention discloses a high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating, which comprises main components with proportions by weight: silicon carbide 5-15%, brown fused alumina 10-20%, boron nitride 3-8%, boron carbide 2-8%, zirconia 5-10%, potassium titanate 1-3%, chromium oxide 5-10%, iron oxide 5-10%, ball clay 3-10% and high temperature inorganic binder 30-50%, wherein the total weight of the components is 100%. The granularities of all solid components of the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating are less than or equal to 2 microns, parts of components achieve nanometer scales, and the granularities of the parts of components are less than or equal to 100 nanometers. The high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating adopts water as solvent, adopts modified high temperature modified inorganic binder as a film forming matter, and determines the addition of the water according to different construction methods, the construction methods comprises a brush coating and a spraying methods, and the volume density of the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating is in 1650-1850kg / m3. The invention discloses a method for making the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating simultaneously.

The invention provides a filling agent and a surface treatment method of chip components. A filler comprises the following components in parts by mass: 15-30 parts of vinyl silane coupling agent; 60-75 parts of alcohol; 5-10 parts of water; 1-5 parts of organic carboxylic acid. The above-mentioned filler can seal the micropores on the surface of the chip component.

The present invention discloses production equipment of a sucker rod continuously coated with ultrahigh molecular weight polyethylene, and the production equipment is prepared by connecting the components of a hydraulic pushing mechanism unit-1, a hydraulic pushing mechanism unit-2, a fixed limit wheel-1, a front tractor unit, an extrusion coating unit, a spray water tank cooling unit, a hydraulic pushing mechanism unit-3, a fixed limit wheel-2, a rear tractor unit and a piling frame in sequence. The extrusion coating unit includes an extruder, a split-type mold and a hydraulic mechanism, after the ultra high molecular weight polyethylene is plasticized and melted in the special extruder, the small diameter part of a standard sucker rod with large diameter two ends and a small diameter middle part is coated with the ultra high molecular weight polyethylene. Compared with the prior art, the small diameter part of the standard sucker rod with larger diameter difference (the maximum and minimum diameter difference may be up to 28.2mm) can be continuously coated, and the coating thickness can be adjusted.

The invention discloses a grid oxidation layer manufacturing method and a semiconductor device manufacturing method. Ozone-containing solution is used for processing a grid oxidation layer before photoetching, and oxygen ions in ozone can be bonded with silicon dangling bonds in the grid oxidation layer. In other words, the oxygen ions in ozone serve as filling atoms which are used for filling the silicon dangling bonds in the grid oxidation layer, thereby enabling the grid oxidation layer to be compact, preventing the inward diffusion of developing solution from causing the corrosion of a trench region of a semiconductor substrate under the grid oxidation layer in a photoetching process, and improving the reliability of a field effect transistor.

The invention discloses a safety airbag suitable for a car following, which comprises an airbag cushion, a gas generator and a retainer located between the airbag cushion and the gas generator, and the retainer includes a blocking sill and a downwardly curved bend part, the blocking sill is quadrangular and the two opposite corners of the blocking sill are respectively connected with a first blocking sheet and a second blocking sheet, and both sides of the first blocking sheet and the second blocking sheet are provided with high temperature In the impurity adsorption layer, the curved portion is larger than a quarter arc and smaller than a half arc, which not only has a stable structure, but also can completely block the corrosion of the airbag buffer by high-temperature impurities.