14results about How to "Corrosion resistant" patented technology

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof, in the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, the modified composite material is added into a polyvinylidene fluoride-hexafluoropropylene copolymer, fibers are formed through an electrostatic spinning method, the fibers are deposited on a polyester net base lining, and the multifunctional composite hydrophobic membrane is prepared. Nano-silica and hydroxyl multi-walled carbon nanotubes are modified, agglomeration is effectively avoided, the hydrophobic membrane has good mechanical strength and toughness, and microcosmic multi-dimensional roughness of the surface of the membrane can be achieved by introducing an inorganic-organic nano hybrid material. Fluorine atoms in a perfluorooctyl ethyl acrylate structure have relatively low surface energy, so that the surface energy of the film can be remarkably reduced, the surface of the film has low surface energy and a rough structure, and the film is high in hydrophobicity and good in chemical stability.

The invention relates to a whole intestine flora transplantation strategy and a nanometer packaging method and application thereof. According to the method disclosed by the invention, the transplantation of the whole intestinal flora is realized by mainly utilizing the combined transplantation of the intestinal fluid flora and the fecal flora, so that the micro-ecology of the whole intestinal tract is more comprehensively, accurately and efficiently regulated and controlled, and a better flora transplantation treatment effect is achieved. The microflora (microcapsules) is encapsulated by a safe biological material, the encapsulating process is simple in process and short in time consumption, intestinal bacteria in different shapes can be simultaneously encapsulated, and the method is not only suitable for encapsulating oxygen-resistant bacteria and facultative anaerobic bacteria, but also suitable for encapsulating intestinal flora including strict anaerobic bacteria, and has the advantages of being simple in process and low in cost. According to the preparation method, death of intestinal bacteria in the preparation process can be reduced, erosion of gastric acid and the like to the intestinal bacteria can be resisted, the survival rate of the bacteria and the colonization efficiency of the bacteria in host intestinal tracts can be remarkably improved, and the microbial transplantation treatment effect is further enhanced.

The invention relates to the technical field of coatings, discloses a high-pressure anti-pollution flashover coating and a refined preparation system thereof, and solves the problems that a coating structure is not stable enough due to the fact that an existing high-pressure anti-pollution flashover coating is low in mechanical strength and adhesive force, and a coating preparation device is not refined enough and cannot be used for uniformly and effectively preparing the coating. The formula of the high-pressure anti-pollution flashover coating comprises the following components in percentage by mass: 3-28% of fluorinated silicone rubber; 3-7% of an anti-arc agent, wherein the anti-arc agent is made of aluminum oxide; the organic composite solvent comprises 1.2 to 3.5 percent of trichloroethylene and 1.2 to 3.5 percent of tetrachloroethylene; the nanoscale high-insulation reinforcing material comprises the following components in percentage by weight: 1-4% of nano aluminum oxide and 1.2-4.2% of nano silicon dioxide; 0.3 to 0.6 percent of a curing agent; 0.02 to 0.05 percent of a catalyst; the high-pressure anti-pollution flashover coating has good mechanical strength and adhesive force, the stability of the coating structure is improved, the coating preparation device is more refined, and the coating can be uniformly and effectively mixed and stirred.

This utility model relates to the field of textile fabrics, and more particularly to a green and environmentally friendly fabric, comprising a reinforcing surface layer and an environmentally friendly base layer. A heat-melting yarn is disposed between the reinforcing surface layer and the environmentally friendly base layer. The environmentally friendly base layer is made of regenerated cellulose fibers. The top and bottom ends of the heat-melting yarn are fixedly connected to the reinforcing surface layer and the environmentally friendly base layer, respectively. The heat-melting yarn is woven from heat-melting fibers. The reinforcing surface layer is woven from fiber bundles, which include tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers. The tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers are bundled together to form a tight structure. This invention solves the technical problems of insufficient environmental performance and functionality in traditional fabrics.

The invention discloses carboxylated ferroferric oxide magnetic nano microspheres and a preparation method thereof, and belongs to the technical field of magnetic nano microsphere preparation.The preparation method comprises the following steps that cellulose and ferroferric oxide magnetic nano microspheres are prepared into composite magnetic nano microspheres through a gel method; the preparation method comprises the following steps: preparing ferroferric oxide magnetic nano-microspheres with strong magnetism and high stability, coating the surfaces of the ferroferric oxide magnetic nano-microspheres with a layer of cellulose gel layer containing hydroxyl groups, and carrying out combined action on hydroxyl and carboxyl introduced by amide reaction to obtain the carboxylated ferroferric oxide magnetic nano-microspheres. The dispersity and the stability of the carboxylated ferroferric oxide magnetic nano-microspheres during sewage treatment are improved, and the removal rate of heavy metals in sewage is increased.

The utility model provides a rolling mill bearing miniature temperature monitoring device based on thread sealing, comprising a miniature temperature sensor, the miniature temperature sensor is installed in an oil hole of a lubricating oil groove on a bearing outer ring, a sensor installation thread is processed in the oil hole of the lubricating oil groove, and the miniature temperature sensor is fixed in the oil hole through threaded connection; four lead grooves are formed in the inner ring of the bearing seat along the axis, a signal transmission line of the micro temperature sensor is led out from the lead grooves, and the leading-out end of the signal transmission line is connected to signal acquisition equipment; and temperature calibration is carried out on the miniature temperature sensor (2) before use. According to the device, the sensor and the bearing are integrated through the structural design of the embedded microsensor, a high-temperature-resistant fixing mode is adopted, long-term stable temperature measurement can be achieved under the high-temperature, high-humidity and high-speed rolling working conditions, the running temperature change of the rolling mill bearing can be monitored in real time, and multi-source dynamic data support is provided for fault early warning and service life prediction of the rolling mill bearing.

This invention discloses a galvanized steel sheet with good adhesion to an electron beam-cured coating, comprising a galvanized steel sheet, at least one surface of which has a composite coating. The composite coating contains the following effective components: an aqueous cationic polymer resin A, comprising 45-75 parts by weight; a compounded organosilane coupling agent B, comprising 15-45 parts by weight; the compounded organosilane coupling agent B is formed by the mixed hydrolysis and condensation of at least one organosilane coupling agent B1 containing an epoxy functional group and at least one organosilane coupling agent B2 containing an amino functional group; a silane coupling agent C containing unsaturated bonds, comprising 3-10 parts by weight; a water-soluble fluorine-containing compound D, wherein the fluorine element comprises 1.5-5 parts by weight; and a water-soluble phosphorus-containing compound E, wherein the phosphorus element comprises 2-5 parts by weight. This invention also discloses a surface treatment agent for galvanized steel sheets and a method for manufacturing a galvanized steel sheet with good adhesion to an electron beam-cured coating.

The invention discloses a trenchless lining repair polyethylene composite pipe for water supply and a preparation method thereof, and relates to the field of pipeline repair. The preparation method comprises the following steps: step 1, extruding food-grade polyethylene granules by an extruder, casting to form a film, and compounding the film on the surface of a reinforced polyester knitted felt to form a food-grade polyethylene film layer, so as to prepare an outer-layer composite hose; by utilizing the flexibility, excellent scratch resistance, corrosion resistance and high strength performance of polyethylene (PE), the flexible pipe (the flexible pipe is of a flexible structure before being cured) is fully connected with the inner wall of the repaired pipeline in the repaired pipeline, and pipelines with different shapes such as round, oval, square or special-shaped pipelines and elbows with the angle smaller than or equal to 45 DEG C can be repaired; the medium conveying pipeline is used for drinking water; and the lining pipe has the advantages of corrosion resistance and wear resistance, the material strength is high, the problem of underground water infiltration is thoroughly solved, the sectional area loss of the pipeline is small, the surface is smooth, the water flow friction is reduced, and the flow capacity of the pipeline is improved.

The utility model discloses a process gas pipeline degreaser based on a novel adsorption material, which comprises a first-stage filter, a second-stage filter, a second-stage filter, a third-stage filter, a fourth-stage filter, a fourth-stage filter and a fifth-stage filter, a second adsorption layer is arranged in the secondary filter, and a second external thread welding joint is arranged at the top; the utility model relates to the technical field of oil removers, on the basis of two-stage filtering design, a first adsorption layer of a first-stage filter can effectively remove large-particle oil drops, suspended solids and part of emulsified oil, and a second adsorption layer of a second-stage filter can effectively remove large-particle oil drops, suspended solids and part of emulsified oil; a second adsorption layer of the secondary filter is made of a nanoscale adsorption material, the adsorption capacity on tiny oil drops and soluble oil is extremely high, and the adopted adsorption material has the characteristics of high temperature resistance and corrosion resistance, can adapt to high-temperature, high-pressure, corrosive and other complex working conditions in the industries of chemical engineering, petroleum and the like and is not prone to failure, the service life of the degreaser is effectively prolonged, and the service life of the degreaser is prolonged. And the equipment replacement frequency is reduced.

The utility model relates to the technical field of batteries, and discloses an energy storage high-voltage battery safety isolation device which comprises an expansion maintenance structure, a protection structure is arranged at the upper end of the expansion maintenance structure, and a main body is arranged in the protection structure located at the upper end of the expansion maintenance structure. A high-pressure joint and a low-pressure joint are respectively arranged at the center of the upper end surface of the main body close to two side edges; the protection structure comprises a shell, a first protection layer is arranged in the shell, a second protection layer is arranged in the first protection layer, a third protection layer is arranged in the second protection layer, and a fourth protection layer is arranged in the third protection layer. According to the utility model, the protection structure is arranged, and multiple protection layers are arranged, so that the whole body has corrosion resistance, moisture resistance, high temperature resistance and insulativity, and the internal main body is ensured not to be influenced by external environmental factors in the use process.

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof. In the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, which is added to a polyvinylidene fluoride-hexafluoropropylene copolymer, and formed into fibers by an electrostatic spinning method. The fibers are deposited on a polyester mesh substrate to obtain the multifunctional composite hydrophobic membrane. The nano silicon dioxide and the hydroxyl multi-walled carbon nanotubes are modified to effectively avoid agglomeration. The hydrophobic membrane has good mechanical strength and toughness. The introduction of inorganic-organic nano hybrid materials can realize microscopic multidimensional roughness of the membrane surface. The fluorine atoms in the perfluorooctyl ethyl acrylate structure have low surface energy and can significantly reduce the surface energy of the membrane. The membrane surface has low surface energy and a rough structure, strong hydrophobicity and good chemical stability.

This invention discloses a method for preparing a lightweight spinel-corundum-aluminate refractory material. First, by simulating the microstructure of sintered magnesia, a multiphase material is constructed with magnesia-alumina spinel as the main crystalline phase and calcium aluminate as the intergranular and secondary crystalline phases. This results in a spinel-calcium aluminate-calcium disaluminate multiphase material with controllable crystalline phase distribution and pore composition. Next, using this multiphase material as aggregate and corundum-spinel as the matrix, the materials are batched according to a specific particle size distribution, pressed into shape, and fired at high temperature. By introducing the spinel-calcium aluminate-calcium disaluminate multiphase material and utilizing calcium ion migration, this invention enables the preparation of a lightweight spinel-corundum-aluminate refractory material with microporous aggregate and a dense matrix. The material's load-bearing capacity at both room temperature and high temperature is not lower than (or even higher than) that of heavy refractory materials of the same material. This synergistically improves the thermal insulation, high-temperature load-bearing capacity, and resistance to media erosion of this type of lightweight refractory material.

The utility model relates to an aluminum alloy fence, belongs to the technical field of stage car safety protection, and particularly relates to a stage car aluminum alloy fence which comprises a stage car body and a carriage bottom plate, a plurality of fence frames are arranged on the carriage bottom plate, split type fence ground feet are arranged on two sides of the bottom of each fence frame, and each split type fence ground foot is composed of a supporting foot and a fixing sleeve. A detachable aluminum alloy connecting piece is arranged between every two adjacent fence frames. According to the split type fence foot margin structure, a simple and ingenious split type fence foot margin structure is adopted, rapid and stable installation of the fence frame is achieved, and installation safety is greatly improved; the aluminum alloy connecting piece enables the connection to be more flexible and convenient. The effects of simple and convenient installation, stable connection and flexible use are achieved, and the problems that an existing stage car aluminum alloy fence is complex in installation, not firm, poor in flexibility and incapable of meeting diversified activity scene requirements are solved.

This utility model discloses a folding table in the field of folding furniture technology, aiming to solve the problems of heavy weight, the need to press the folding device for folding, and friction noise generated during folding in the prior art. It includes an aluminum honeycomb tabletop and table legs; the aluminum honeycomb tabletop includes a first aluminum honeycomb tabletop and a second aluminum honeycomb tabletop, which are hinged together by a folding connector. A folding lock is provided between the two aluminum honeycomb tabletops for locking when unfolded or folding them up; the table legs are provided in two sets, each set of table legs is connected to the aluminum honeycomb tabletop by a rotating connector. The rotating connector allows the table legs to rotate around it and rest against the inner folding surface of the folded aluminum honeycomb tabletop, and the table legs within each set are rotatably connected; a sound-insulating washer is provided between the contact surface of the rotating connector and the table legs; this utility model achieves the functions of being lightweight, easy to operate, and reducing friction noise during folding.