34 results about "Corrosion engineering" patented technology

The invention relates to a composition design, a preparation method and application of a hot spraying zinc-aluminum-magnesium-rare earth multi-element alloy material, and belongs to the technical field of anti-corrosive metal anticorrosion. The zinc-aluminum-magnesium-rare earth multi-element alloy material comprises the following components in percentage by weight: 5.0 to 15.0 percent of aluminum, 0.1 to 1.0 percent of magnesium, 0.1 to 0.5 percent of rare earth (lanthanum and cerium), less than 1.0 percent of impurities and the balance of zinc. The preparation method comprises the following steps of: heating to smelt zinc ingots and aluminum ingots in an alloy smelting furnace, adding an intermediate alloy, stirring until the melt is clear, standing, slagging off, and casting; and performing homogenizing annealing on cast ingots, extruding to obtain zinc-aluminum-magnesium-rare earth multi-element alloy blank thick wires, and performing homogenizing annealing, drawing, diameter reducing, and wire surface cleaning to obtain zinc-aluminum-magnesium-rare earth multi-element alloy wire products. A corrosion resistant multi-element alloy coating prepared from the alloy wires prepared by the method through a hot spraying technology has the corrosion resistance obviously higher than that of a pure zinc coating, is suitable for protection construction of steel structural parts, and has important significance and wide application prospect for anti-corrosion engineering of water conservancy and hydropower, ports, bridges, ships and the like.

The invention discloses aluminum oxide-containing polyaniline zinc powder flake epoxy heavy anti-corrosion coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component A comprises the following components in parts by mass: 35-85 parts of epoxy resin, 0.5-25 parts of polyaniline zinc powder flake, 0.1-10 parts of aluminum oxide, 0.1-5 parts of pigment, 1-15 parts of packing, 0.01-2 parts of anti-sag agent, 0.01-0.5 part of dispersant, 0.01-2 parts of flatting agent, 0.01-0.5 part of deforming agent and 5-40 parts of mixed solvent; and the component B comprises the following components in parts by mass: 40-90 parts of amine curing agent and 10-60 parts of solvent; and the coating is prepared by mixing and stirring the component A and the component B for 1-5 minutes according to a mass ratio being 1: (0.1-1):1. The corrosion resistance, seawater erosion and abrasion resistance, ageing resistance and anti-penetrating property of the coating system are obviously improved; and the coating can be applied to heavy anti-corrosion engineering in fields of petrochemical equipment, pipelines, offshore oil platforms, berthing facilities, ships and the like.

The invention discloses a reinforced concrete cathode protection system and method. The reinforced concrete cathode protection system comprises reinforcing steel bars, concrete, a titanium net, a graphene/carbon fiber cement base material and a power source. The reinforcing bars are connected with the negative electrode of the power source to serve as cathodes; a hole solution of the concrete serves as an electrolyte; the titanium net is connected with the positive electrode of the power source to serve as a main anode; the graphene/carbon fiber cement base material serves as an auxiliary anode; and the reinforcing bars, the concrete, the titanium net, the graphene/carbon fiber cement base material and the power source form a loop of the cathode protection system. The reinforced concrete cathode protection system is low in cost, low in energy consumption and durable, an existing cathode protection technology is improved and optimized, an economical and effective corrosion protection technology is provided for domestic large-amount and large-range chlorine salt corrosion engineering, and obvious economic benefits and application prospects are achieved.

The invention discloses a metal organic formwork corrosion inhibitor-hydrogel compound with a Fe2+ response characteristic, and a preparation method and application thereof. The metal organic formworkcorrosion inhibitor-hydrogel compound is composed of polyvinyl alcohol hydrogel and a copper-based carboxylic acid metal organic formwork doped in the hydrogel and encapsulated with a 1H-1,2,4-triazole-3-thiol corrosion inhibitor. The preparation method includes the steps that firstly, in-situ encapsulation of a corrosion inhibitor guest in a metal organic formwork encapsulation solution is achieved through a one-pot synthesis method, then an encapsulation precursor is doped into the polyvinyl alcohol hydrogel, the growth rate of a nanoshell is decreased through the coordination effect of a hydrogel monomer and a metal center in the metal organic formwork, thus the integration of a formwork structure is improved, high-capacity encapsulation of the corrosion inhibitor is achieved finally,and the high-load hydrogel compound of the metal organic formwork encapsulation corrosion inhibitor is formed. The corrosion inhibition compound can be applied to a seawater corrosion engineering structure, a main characteristic product of carbon steel corrosion in a seawater environment is free divalent iron ions, the ions are replaced with the center of cetyl trimethyl ammonium positive ions ofthe metal organic formwork, thus the outer surface hole diameter of a frame can be enlarged, the corrosion inhibitor encapsulated inside is released, and target protection of the corrosion area is achieved. By adopting a corrosion inhibition system, the targeting ability is high, the efficient and durable effects are achieved, cost performance is high, and significant application value and broad market prospects are achieved.

The invention relates to a chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating and a preparation method thereof, and belongs to the field of coatings. The cold-coating zinc coating is prepared from the following components in parts by mass: 5 to 25 parts of synthetic resin, 0.1 to 3 parts of a chlorohydrocarbyl silane coupling agent, 60 to 98 parts of zinc powder and 10 to 40 parts of a solvent. The preparation method comprises the following steps: firstly, sequentially adding synthetic resin, a chlorohydrocarbyl silane coupling agent and a solvent into a reaction kettle, and dispersing for 15-50 minutes at the rotating speed of 300-1500 rpm; and then adding the modified zinc powder, dispersing for 30-100 minutes at the speed of 300-1500 rpm, filtering, and discharging, so as to obtain the chlorohydrocarbyl silane coupling agent modified cold-coating zinc coating. After the chlorohydrocarbyl silane coupling agent is added into the cold-coating zinc coating, the adhesive force of a coating and a hot-dip galvanized base material can be greatly improved, and the corrosion resistance of the coating on hot-dip galvanized steel is improved. The modified cold-coating zinc coating can be widely applied to anti-corrosion engineering of outdoor steel structures, and can conveniently and quickly solve the problem of corrosion protection of power transmission and transformation facilities, high-speed rail facilities, highway facilities and the like.

The invention provides a high-temperature-resistant anti-corrosion rotational flow shear type gas-liquid separator. The gas-liquid separator comprises first rotational flow shearing type separation standard module assemblies or second rotational flow shearing type separation standard module assemblies, each first rotational flow shearing type separation standard module assembly comprises a first tray body, a second tray body and a third tray body, or each second rotational flow shearing type separation standard module assembly comprises a first tray body, a second tray body, a third tray body,a fourth tray body and a fifth tray body; the first rotational flow shearing type separation standard module assemblies or the second rotational flow shearing type separation standard module assemblyassemblies are connected to a main shaft at intervals in the axial direction of the main shaft; when the rotating separator rotates at a high speed, liquid is continuously and circularly impacted bythe centrifugal force of the rotating separator and gas countercurrent, a solute and a solvent are separated efficiently and efficiently, the disc bodies, a main body and the main shaft of the gas-liquid separator are all made of corresponding anti-corrosion engineering materials, and the gas-liquid separator has the advantages of being good in anti-corrosion performance, easy to operate, low in energy consumption and the like, and is a novel efficient rotational flow shearing type gas-liquid separator suitable for resisting high temperature and preventing corrosion of various acid types.

The invention discloses a marine corrosion resistant coating material containing nickel-manganese. The marine corrosion resistant coating material containing the nickel-manganese is prepared from the following raw materials in parts by weight: 50-60 parts of nickel-manganese alloy powder, 5-12 parts of organic solvent, 5-15 parts of nano oxide particle reinforcing agent, 1-5 parts of leveling agent, 1-5 parts of epoxy solid enhancer, 10-15 parts of defoamer, 3-8 parts of deionized water, 1-5 parts of binder, 1-5 parts of corrosion inhibitor, 1-5 parts of dispersant and 1-5 parts of thickener. The marine corrosion resistant coating material containing the nickel-manganese has the advantage of meeting the urgent need of solving the problem of marine corrosion of engineering parts, and has an important application prospect in the corrosion engineering of industrial equipment of ocean engineering, offshore wind power and the like.

The invention discloses a marine corrosion resistant coating material containing magnesium-manganese. The marine corrosion resistant coating material containing the magnesium-manganese is prepared from the following raw materials in parts by weight: 50-60 parts of magnesium-manganese alloy powder, 5-12 parts of organic solvent, 5-15 parts of nano oxide particle reinforcing agent, 1-5 parts of leveling agent, 1-5 parts of epoxy solid enhancer, 10-15 parts of defoamer, 3-8 parts of deionized water, 1-5 parts of binder, 1-5 parts of corrosion inhibitor, 1-5 parts of dispersant and 1-5 parts of thickener. The marine corrosion resistant coating material containing the magnesium-manganese has the advantage of meeting the urgent need of solving the problem of marine corrosion of engineering parts, and has an important application prospect in the corrosion engineering of industrial equipment of ocean engineering, offshore wind power and the like.

The invention discloses a preparation method of long-oil alkyd resin anticorrosive enamel paint with high corrosion potential, which comprises the steps of by taking dry long-oil alkyd resin and zincabietate synthesized by the method as film-forming substances and isobutanol as a solvent, adding organic kaolin, organic bentonite, carbon black, simethicone and aluminum naphthenate serving as a drier, and stirring at a high speed to obtain the simple rosin-based long-oil alkyd resin anticorrosive enamel paint. The enamel paint has low corrosion current, high corrosion potential and large electrochemical impedance, that is, the enamel paint has good local corrosion resistance, and can be applied to anti-corrosion engineering in the fields of house balcony metal base railings, petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, ships and the like.

The invention discloses a marine corrosion resistant coating material containing rare earth. The marine corrosion resistant coating material containing the rare earth is prepared from the following raw materials in parts by weight: 50-60 parts of rare-earth alloy powder, 5-12 parts of organic solvent, 5-15 parts of nano oxide particle reinforcing agent, 1-5 parts of leveling agent, 1-5 parts of epoxy solid enhancer, 10-15 parts of defoamer, 3-8 parts of deionized water, 1-5 parts of binder, 1-5 parts of corrosion inhibitor, 1-5 parts of dispersant and 1-5 parts of thickener. The marine corrosion resistant coating material containing the rare earth has the advantage of meeting the urgent need of solving the problem of marine corrosion of engineering parts, and has an important application prospect in the corrosion engineering of industrial equipment of ocean engineering, offshore wind power and the like.

The invention provides a system and a method for producing high-silicon sulphoaluminate cement through biomass power plant ash pretreatment, and belongs to the fields of metallurgy, electric power, chemical engineering, building material technologies and resource comprehensive utilization and environmental protection and treatment of biomass power plant ash. According to the biomass power plant ash treatment system and method, the economic benefits are high, industrial solid waste such as biomass ash, desulfurized gypsum and carbide slag can be comprehensively utilized, high-value products are produced by utilizing the industrial solid waste through the low-cost production process, the production raw materials are wide in source and low in price, and the economic benefits are high. The produced high-silicon sulphoaluminate cement clinker can be used for producing additives of special cement or conventional cement, and can be applied to first-aid repair, rush building engineering, winter construction engineering, anti-corrosion engineering and the like, so that the high-silicon sulphoaluminate cement clinker has good practical application value, especially large-scale industrialization and industrial application value.

The invention discloses a marine corrosion resistant coating containing magnesium. The coating is prepared from the following raw materials in parts by weight: 50-60 parts of magnesium alloy powder, 5-12 parts of organic solvent, 5-15 parts of nano oxide particle reinforcing agent, 1-5 parts of levelling agent, 1-5 parts of epoxy curing agent, 10-15 parts of defoaming agent, 3-8 parts of deionized water, 1-5 parts of binding agent, 1-5 parts of corrosion inhibitor, 1-5 parts of dispersing agent and 1-5 parts of thickening agent. The coating meets the urgent need for solving the problem of marine corrosion of engineering parts, and has important application prospects in marine engineering and corrosion engineering of industrial equipment such as offshore wind farms and the like.