5185 results about "Corrosion prevention" patented technology

The present invention discloses an anti-corrosion and anti-seepage anchor structure for new buildings, which includes multiple steel strands arranged in an anchor hole. The top of the anchor hole includes a cushion layer, a bottom plate and a surface layer from bottom to top; a tension end anchor assembly is arranged at the top ends of the multiple steel strands and is located in the bottom plate below the surface layer. The tension end anchor assembly includes a settlement type winged anchor backing plate, which is arranged at the top of the multiple steel strands and is located at the top surface of the bottom plate. The settlement type winged anchor backing plate has a cylindrical structure, and the cylindrical structure includes a cylinder head part, a cylinder body part and a cylinder tail part from top to bottom. Among them, the tension anchor of the tension end anchor assembly is arranged at the cylinder head part; a connecting pipe is sleeved outside the multiple steel strands, and the upper end of the connecting pipe is hermetically connected to the lower end of the cylinder tail part; a water-stop steel ring assembly is embedded in the bottom plate and the cushion layer at the same time, and the lower end of the connecting pipe extends into the water-stop steel ring assembly; a front anchor carrier assembly is arranged at the other ends of the multiple steel strands. It can solve the problem of upward seepage of underground foundation water.

The present invention discloses a sunken winged anchor backing plate for construction, which is applied to an anti-corrosion and anti-seepage anchor rod structure for construction. The body of the sunken winged anchor backing plate is in a cylindrical structure, and the body includes a cylinder head part, a cylinder body part, a cylinder tail part, an inner hole part and a plurality of reinforcing wing plates; the cylinder head part is arranged at the uppermost part of the body; the cylinder body part is coaxially connected to the lower part of the cylinder head part; the cylinder tail part is coaxially connected to the lower part of the cylinder body part; wherein the outer dimensions of the cylinder head part, the cylinder body part and the cylinder tail part gradually decrease; the inner hole part is coaxially arranged on the body with the cylinder head part, the cylinder body part and the cylinder tail part; and the plurality of reinforcing wing plates are evenly spaced along the axial direction and are arranged around the outer wall of the cylinder tail part. It can solve the problem of upward seepage of underground foundation water.

The invention discloses a disilane mixed gas dissolving and mixing system and a control method, and relates to the technical field of gas mixing preparation, the disilane mixed gas dissolving and mixing system comprises seven modules, a storage module realizes accurate pressure control through a honeycomb gas storage tank matrix, and the tank wall adopts a nano composite structure for corrosion prevention; the premixing module forms a chaotic flow field by using a double-helix micro-channel and pulse injection; the reaction module is combined with supercritical and electromagnetic resonance to accelerate the reaction; the monitoring module fuses multispectral detection; the control system is based on deep reinforcement learning, in addition, a gradient condensation-membrane distillation separation module, a bionic safety interlocking module and other modules are further arranged, and all the modules cooperate to achieve efficient mixing and production. According to the device and the method, high-precision preparation of disilane mixed gas, precise pressure-controlled material storage, molecular-level efficient mixed reaction, multispectral precise monitoring, intelligent regulation and control, stability guarantee, high safety interlocking and intelligent maintenance are realized, faults can be reduced, the product quality and the production efficiency are improved, and the cost is reduced.

The invention provides a polyaniline / modified graphene oxide composite material and a preparation method thereof. The preparation method comprises the following steps: dispersing purified graphene oxide, performing ultrasonic treatment, heating, adding a modifier for modification, centrifuging, taking precipitate, freezing, drying and grinding to obtain modified graphene oxide powder; mixing the powder with an aniline solution in doped acid to form a modified graphene oxide / aniline acid solution; dissolving ammonium persulfate in the doped acid to prepare an ammonium persulfate acid solution; and slowly dropwise adding the solution into the solution, carrying out in-situ polymerization, and carrying out suction filtration, washing and drying to obtain the composite material. According to the method, through chemical modification and in-situ polymerization processes, the problems that a single filler is poor in dispersity, a conductive network is discontinuous, and anti-corrosion and anti-static performance is difficult to synergistically improve are solved, and the process is simple and convenient and suitable for industrialization.

The invention discloses a scratch repair coating and a preparation method thereof, and relates to the technical field of high polymer materials. When the scratch repair coating is prepared, hydroxylated boron nitride reacts with 1-(3-triethoxysilylpropyl)-2-imidazoline to prepare pre-modified boron nitride, and then the pre-modified boron nitride and 4-chloro-1-butene are subjected to quaternization to prepare modified boron nitride; the preparation method comprises the following steps: reacting styryl phosphonic dichloride with 4, 4, 5, 5, 6, 6, 7, 7, 7-nonafluoro-1, 2-heptanediol to prepare a hydroxyl-terminated phosphorus-fluorine-containing polymer; the preparation method comprises the following steps: reacting isophorone diisocyanate with a hydroxyl-terminated phosphorus and fluorine-containing polymer to prepare a polyurethane prepolymer; reacting the polyurethane prepolymer with hydroxyl-terminated coumarin to generate modified polyurethane; and uniformly mixing the modified polyurethane, the modified boron nitride and a photoinitiator to prepare the scratch repair coating. The scratch repairing coating prepared by the invention has good self-repairing performance, flame retardant property, corrosion resistance and mechanical property.

The invention relates to the technical field of electric corrosion prevention of motors, and discloses an electric corrosion prevention mechanism of a motor bearing, which comprises a motor, the motor is provided with a shell and a bottom cover which are matched with each other, a first bearing cover is fixed on the outer side of the shell, and a second bearing cover is integrally formed on the outer side of the bottom cover. Matched bearings are limited in the first bearing cover and the second bearing cover; a conduction mechanism is arranged between the shell and the bottom cover and is used for reducing the risk that the bearing matched with the bearing is electrically corroded; the outer sides of the two matching bearings are provided with conduction matching parts, and the conduction matching parts are internally provided with lubricating oil. Lubricating oil at the lower end of the rectangular block enters the annular groove to be in contact with the matched bearing through rotation of the rotating shaft, current is prevented from passing through a bearing raceway, and shaft voltage is prevented from puncturing a lubricating film to cause discharge; the motor vibrates to replace the lubricating oil in the annular groove, so that a continuously updated lubricating film is formed on the surface of the rotating element, and the insulation performance is prevented from being reduced.

The invention belongs to the technical field of steel pipe welding, and particularly relates to a welding device for a large-diameter plastic-coated steel pipe, the welding device comprises a base, a support, a first air cylinder and a welding gun, the support is fixedly arranged at the top of the base, the first air cylinder is arranged on the support, the welding gun is fixedly arranged at the moving end of the first air cylinder, and the first air cylinder is arranged on the support. The two clamping mechanisms are arranged between the two sides of the top of the base and the two sides of the top of the support correspondingly, and the two clamping mechanisms can clamp and fix the two large-diameter plastic-coated steel pipes which are in butt joint; and the transverse moving mechanism is arranged at the top of the bracket. The PLC is used for controlling and coordinating actions of all the mechanisms, it is guaranteed that welding, cooling and smoke removal are conducted synchronously, the welding efficiency and the quality stability are improved, the problems that an existing welding device is insufficient in heat input regulation and control, a coating is prone to damage, and the working environment is poor are solved, and the corrosion resistance and the service life of the large-diameter plastic-coated steel pipe are guaranteed.

The invention relates to the technical field of comprehensive corrosion prevention and pollution prevention of ships, in particular to a marine high-power ultrasonic pipeline pollution prevention device and a control method thereof. The contact type ultrasonic transducer is mounted on the outer wall of the seawater pipeline and is matched with the high-power driving controller, so that high-power ultrasonic waves can be used for repelling, preventing and treating contaminated marine organisms, and attached marine organisms can be removed to a certain extent; the transducer is arranged on the outer wall of a ship seawater pipeline or a valve box in a contact type installation mode and is connected through a profiling base stud to be installed, so that the whole device is convenient to disassemble, assemble, arrange and maintain, and flowing of seawater in the pipeline is not affected; according to the ultrasonic pipeline anti-fouling device, wheel control logic is adopted, automatic adjustment and alternate intermittent operation are achieved by adding the switching circuit, the power consumption and heat production can be effectively controlled while the ship seawater pipeline anti-fouling effect is guaranteed, the reliability of the device is improved, the size of the device is reduced, and the application prospect is wide.

The invention discloses a buried pipeline multi-source stray current interference coupling test system and test method. The system comprises a test pipeline module, a stray current simulation module, a cathode protection module, a multi-dimensional monitoring module, an intelligent protection module and a data analysis module. A comprehensive system integrating multi-source interference, a full-size pipeline, intelligent protection and real-time monitoring integrates static direct current interference, dynamic direct current interference and alternating current interference into the same system, and the problem that multi-source stray current superposition cannot be truly simulated in the prior art is solved. The comprehensive test of static direct current, dynamic direct current, alternating current stray current and anticorrosive coating defect coupling interference can be simulated, online monitoring of pipe-to-ground potential, current distribution and corrosion rate is realized, the timeliness and accuracy of test data are improved, cooperative work and data linkage analysis of multiple modules are realized, and the test efficiency is improved. A powerful basis is provided for optimizing a protection strategy, and the corrosion protection effect of the buried pipeline is improved.

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

The invention discloses a waste gas washing spray tower with an anti-corrosion structure, and relates to the technical field of waste gas treatment.The waste gas washing spray tower comprises a tower body, a liquid storage tank formed in the tower body, a gas inlet pipe installed on the side wall of one side of the tower body and a gas outlet pipe installed at the top of the tower body; spraying assemblies are mounted in the tower body above the two filler purification assemblies, a demister is mounted on the inner wall of the tower body below the gas outlet pipe, and an anti-corrosion lining is laid on the inner wall of the tower body. By arranging the filler purification assembly, the effect that blocked filler can be automatically discharged from the rectangular grid during cleaning is achieved, manual scraping is not needed, the labor burden of workers is reduced, and the speed of taking the filler out of the spray tower is increased; and by arranging the traction mechanism, the effect that the traction rope pulls and drives the two filler purification assemblies to synchronously turn over is achieved, and simultaneous discharging of filler in the two filler purification assemblies is facilitated.

The invention provides a preparation method of an h-BN / PI high-temperature-resistant anticorrosive coating, and relates to the technical field of polymer composites.The preparation method of the h-BN / PI high-temperature-resistant anticorrosive coating comprises the steps that under the protection of inert atmosphere, aromatic diamine containing impurity element five-membered rings and aromatic dianhydride containing ether bonds are taken and subjected to a polymerization reaction in a polar aprotic solvent, and the h-BN / PI high-temperature-resistant anticorrosive coating is obtained. A polyamide acid solution is obtained; performing ultrasonic-assisted liquid phase stripping on the micron-sized hexagonal boron nitride to obtain single-layer hexagonal boron nitride; adding the single-layer hexagonal boron nitride into the polyamide acid solution for multiple times, and uniformly stirring to obtain a hexagonal boron nitride / polyimide composite solution; and coating the hexagonal boron nitride / polyimide composite liquid on a to-be-coated surface, and carrying out gradient heating curing to obtain the h-BN / PI high-temperature-resistant anticorrosive coating. The h-BN / PI high-temperature-resistant anticorrosive coating based on interaction of multiple hydrogen bonds has relatively good high temperature resistance, relatively good resistance mechanical property and excellent corrosion resistance.

The invention discloses a corrosion prevention and control method and system for a seawater pipeline, and relates to the technical field of seawater corrosion prevention. The method comprises the following steps: acquiring basic parameters of an electronic transmission module of each seawater pipeline section, seawater temperature of each seawater pipeline section and basic parameters of each seawater pipeline section; determining a target protection potential of each seawater pipeline section according to the basic parameter of the electron transmission module of each seawater pipeline section, the seawater temperature of each seawater pipeline section, the basic parameter of each seawater pipeline section and a preset potential adjustment algorithm model; and adjusting the potential of each seawater pipeline section according to the target protection potential of each seawater pipeline section. According to the method, the protection potential of each seawater pipeline section of the seawater pipeline can be dynamically adjusted according to the seawater temperature of each seawater pipeline section of the seawater pipeline and the preset potential adjustment algorithm, intelligent anti-corrosion control is achieved, and the method is suitable for ship seawater pipeline application under the polar region environment condition and is wide in application range and high in flexibility.

The invention provides a long-acting rust converting agent for metal surfaces, and relates to the technical field of marine metal surface rust prevention and conversion, tannic acid, gallic acid and salicylic acid are matched with each other and can form a firm complex layer with formed metal oxide or metal through chelation, and the metal surface rust conversion effect is improved. The synergistic effect of the tannic acid corrosion inhibitor, the gallic acid corrosion inhibitor and the salicylic acid corrosion inhibitor enhances the exertion of the synergistic migration protection effect, a relatively compact and smooth conversion film can be formed on the rusted metal surface, the formed conversion film can effectively prevent a corrosion medium from permeating into the metal surface to make contact with the metal, and the metal corrosion inhibitor is suitable for steel structures, especially suitable for steel structure connecting parts and has good corrosion resistance and corrosion resistance. The rust remover has the advantages that the rust remover is good in permeability and high in rust conversion efficiency, harmful rust can be converted into a protective layer beneficial to corrosion prevention, effective protection is provided for a metal matrix, the corrosion prevention effect can reach 20 years or above, frequent maintenance is omitted, resources, manpower and material resources are saved, and remarkable economic benefits are achieved.

The invention relates to the technical field of cathode protection, in particular to a method for optimizing cathode protection of a complex buried pipe network under current interference, which comprises the following steps of: collecting data of soil resistivity, pipeline material and environment humidity from differentiated industrial areas by adopting an on-site sampling mode, and analyzing the variation and relevance of the data to obtain the cathode protection of the complex buried pipe network. And obtaining environmental parameter characteristics. According to the invention, through the scene test adjustment model of the simulation environment, various complex interference conditions can be accurately corresponding, the distribution of current and potential can be optimized, the stability of the cathode protection system in the variable interference environment is improved, and through the simulation of the electromagnetic field data and the multi-round simulation test, the fine adjustment of the current and potential parameters is realized; the anti-corrosion effect of the buried pipe network and the overall efficiency of the system are remarkably improved, long-term safety and stability of the buried pipe network in a complex current interference environment are ensured through real-time monitoring and adjustment, and the service life of facilities is remarkably prolonged.

The invention provides low-carbon premixed concrete based on industrial solid waste synergistic activation and a preparation method of the low-carbon premixed concrete. The low-carbon premixed concrete is prepared from the following components: a nano silicon-based anti-corrosion early strength agent, a cementing material, recycled aggregate, electric furnace tailings, waste carbon fibers, a polycarboxylate superplasticizer and water, the preparation method comprises the following steps: S1, preparing a nano silicon-based anti-corrosion early strength agent through silane hydrolysis and modification reaction of nano silicon dioxide; s2, preparing a cementing material: mixing fly ash, steel slag, mineral slag and Portland cement, calcining, grinding, spraying a composite alkali activator, and aging; s3, mixing and forming: wet-mixing the cementing material, the recycled aggregate, the iron tailing sand, the waste fibrilia, the nano silicon-based anti-corrosion early strength agent, the polycarboxylate superplasticizer and water, and pre-injecting and forming; and S4, carbonization curing. According to the invention, efficient utilization of industrial solid waste is realized, and the low-carbon environmental protection performance and mechanical property of the concrete are improved.

The invention relates to the technical field of cables, and discloses an anti-torsional fatigue and corrosion-resistant wind power cable and a manufacturing process thereof, the anti-torsional fatigue and corrosion-resistant wind power cable comprises a three-phase cable core main body, a dynamic compensation anti-torsion layer, a multifunctional corrosion-resistant barrier layer and an outer sheath, the three-phase cable core main body comprises a stranded conductor, a filling inner layer and an insulating layer; the dynamic compensation anti-torsion layer comprises an incongruous spiral supporting layer and a shape memory alloy compensation layer, and the incongruous spiral supporting layer comprises aramid fiber bundles and a nickel-cobalt alloy wire woven mesh; the multifunctional anti-corrosion barrier layer is arranged on the outer side of the dynamic compensation anti-torsion layer and sequentially comprises an anti-corrosion barrier bottom layer, an anti-corrosion barrier middle layer and an anti-corrosion barrier bottom layer surface layer from inside to outside. Through the gradient composite structure design, the problem of failure of a traditional wind power cable under long-term dynamic load and severe environment is effectively solved, and the torsional fatigue resistance, the corrosion resistance and the environmental adaptability are remarkably improved.

The invention belongs to the technical field of cement concrete surface coatings, and discloses a cement concrete surface coating structure with acid-resistant and corrosion-resistant functions, which has the advantages that the acid resistance is improved: a composite coating structure is adopted, and the advantages of modified epoxy resin, nano filler and polyurea are combined, so that the acid resistance and durability of the coating are remarkably improved. The modified epoxy resin primer has good permeability, so that the adhesive force between the coating and a concrete base layer can be effectively enhanced, and the falling risk is reduced. And compared with a traditional epoxy resin coating, the preparation method of the composite coating simplifies the curing process and reduces the construction difficulty. And the cost is reduced: the nanofiller is adopted to replace part of the polyurea material, so that the cost of the coating is reduced, and the performance is improved. The coating is endowed with excellent hydrophobicity and self-cleaning capability through surface hydrophobic treatment, dirt adhesion is reduced, and the service life is prolonged.

The invention provides wear-resistant and corrosion-resistant lubricating oil and a preparation method thereof. The wear-resistant and corrosion-resistant lubricating oil is prepared from the following raw materials in parts by weight: 88-92 parts of base oil, 3-6 parts of phosphate and ammonium phosphate co-grafted graphene oxide, 0.5-1 part of a purification dispersant, 0.5-1 part of an antirust agent, 2-4 parts of an antioxidant, 0.5-1 part of a defoaming agent and 0.5-1 part of a pour point depressant. The phosphate and the ammonium phosphate are jointly grafted with the graphene oxide, and the wear resistance and the corrosion resistance of the lubricating oil are synergistically improved by utilizing the'nano bearing 'effect of a phosphate group, an ammonium phosphate group and the graphene oxide; meanwhile, by utilizing the capacity of ammonium phosphate groups for neutralizing acidic substances and the chelation of phosphate groups and combining the high specific surface area and barrier property of the graphene oxide, the anti-corrosion and anti-oxidation effects are further enhanced. Through a multifunctional synergistic effect, the problem that a traditional additive is single in function is solved, and the service life of the lubricating oil in high-temperature, high-load and extreme environments is remarkably prolonged.

The invention relates to the technical field of pipeline welding, in particular to a welding structure for a reinforcing ring on the outer surface of an anti-corrosion pipe, which comprises a frame body, two semicircular supports for supporting the anti-corrosion pipe are arranged above the frame body, the axes of the two semicircular supports are the same, and a fixing structure for fixing the reinforcing ring is arranged between the two semicircular supports. Welding guns used for welding the reinforcing ring are arranged on the two sides of the fixing structure correspondingly, semicircular arc-shaped sliding rails are arranged on the two sides of the reinforcing ring, arc-shaped sliding rods are slidably connected into the arc-shaped sliding rails, the welding guns are connected to one ends of the arc-shaped sliding rods, and the effect of improving the welding efficiency of the reinforcing ring is achieved.

The invention discloses a preparation method of an efficient antibacterial and anticorrosive titanium implant / MXene-based functional surface. The method comprises the following steps: 1, preparing an MXene-based multifunctional nano hybrid material; 2, pretreating the surface of the titanium implant; 3, preparing a compact film; and 4, functional surface preparation. According to the method, a nano hybrid material of the two-dimensional MXene nanosheet and the metal oxide is deposited on the surface of the titanium implant subjected to chemical pretreatment to form a functional surface with corrosion resistance, antibacterial performance and near-infrared light response performance, so that the corrosion resistance of a coating on the surface of the titanium implant is improved; the MXene-based multifunctional nano-hybrid material and the titanium implant / MXene-based functional surface have the advantages that the MXene-based multifunctional nano-hybrid material can be used for preparing the MXene-based functional surface, the growth of bacteria can be effectively inhibited by generating local heat effects under the irradiation of near-infrared light, excellent antibacterial performance can be given to titanium implantation, and the MXene-based multifunctional nano-hybrid material and the preparation method of the titanium implant / MXene-based functional surface have wide application prospects in functional application of biomedical coatings and titanium implants.

The invention relates to the technical field of cement-based anticorrosive materials, and particularly discloses a modified magnesium phosphate cement anticorrosive material as well as a use method and application thereof. The anticorrosive material comprises the following components in parts by weight: 100 parts of modified magnesium phosphate cement, 3-15 parts of a retarder, 1-10 parts of an epoxy resin glue solution, 0.5-5 parts of metakaolin and 15-20 parts of water. The modified magnesium phosphate cement comprises dead burned magnesium oxide and modified phosphate in a mass ratio of (1-4): 1. The modified phosphate is prepared from the following raw materials: nano aluminum oxide, sodium citrate and phosphate in a mass ratio of (0.5-1.5): (0.5-1.5): (20-25). The epoxy resin glue solution comprises uncured epoxy resin glue and a curing agent. The anti-corrosion material provided by the invention has the technical advantages of strong adhesive property and excellent anti-corrosion property, and can better provide protection for a steel structure serving in a marine environment.

The invention provides a preparation method of a self-repairing waterborne polyurethane coating based on a synergistic effect of a dynamic disulfide bond and a pH response microcapsule. The preparation method comprises the following steps: step 1, preparing a dynamic disulfide bond-containing waterborne polyurethane (D-WPU) emulsion; step 2, preparing a pH response microcapsule; step 3, preparing a self-repairing waterborne polyurethane coating; a dynamic disulfide bond of the self-repairing waterborne polyurethane coating rapidly repairs macrocracks at 50-60 DEG C through mercaptan catalysis, and pH < lt > is caused by local corrosion of a pH response microcapsule; when the pH value is 4.0, cysteine is released, sulfydryl accelerates recombination of dynamic bonds, and amino enhances cohesive force of the coating and neutralizes H < + >. And in combination with a hydrogen bond network of the nanocellulose, the coating has low-temperature repair (the mechanical strength recovery rate is greater than or equal to 90%), high toughness (the water absorption rate is less than or equal to 2.1%) and long-acting corrosion resistance (the salt spray resistance life is greater than or equal to 600 hours), and is suitable for severe environments such as ocean engineering and new energy equipment.

The invention discloses a preparation method of a bio-based epoxy resin anticorrosive coating, and relates to a preparation method of a bio-based epoxy resin coating. The bio-based epoxy resin anticorrosive paint mainly comprises an anticorrosive filler COFs-AA, bio-based epoxy resin and a curing agent. Wherein the anticorrosive filler COFs-AA is prepared from a two-dimensional covalent organic framework COFs and a bio-based material arachidonic acid (AA) through a covalent condensation reaction; the bio-based epoxy resin is prepared by epoxidizing a bio-based material galangin serving as a raw material through epichlorohydrin, and the curing agent is a common curing agent for epoxy resin. The bio-based epoxy resin anticorrosive paint is compounded by taking biomass as a basic component, and has the characteristics of greenness, environmental protection, no toxicity, good hydrophobicity and good corrosion resistance; the bio-based epoxy resin anticorrosive paint can be applied to the field of corrosion protection of materials such as various metals and woodware.

The invention belongs to the technical field of stainless steel surface treatment, and particularly relates to a stainless steel passivation solution and a preparation method thereof. The water-based cutting fluid is prepared from the following raw materials: cerium salt, copper sulfate, citric acid, sodium dihydrogen phosphate, ammonium molybdate, sodium tungstate, aminated-silane modified SiO2 nanoparticles, polyethylene glycol, L-ascorbic acid, polyaspartic acid, an anti-settling agent, a surfactant and the balance of deionized water. According to the invention, a three-dimensional network skeleton is constructed by using aminated-epoxy group silane modified SiO2 nanoparticles, so that the problem of weak interface bonding force of a traditional passivation layer is solved; according to the formula, the proportion of biodegradable components such as citric acid and polyaspartic acid is extremely high, cerate adopts a low-toxicity rare earth compound, molybdenum / tungsten elements are fixed in a stable oxide form, the dosage of EDTA is remarkably reduced through a compounding technology, residual ions are adsorbed in combination with a three-dimensional network, and the balance of environment friendliness and long-acting corrosion resistance is achieved.

Provided in the present application are a bio-based fluoride-free waterproof agent, and a preparation method therefor and the use thereof. In the present application, firstly, a bio-based monomer is added into a reaction; secondly, a rosin-based amino acid surfactant is introduced, which is a bio-based ampholytic surfactant, has the advantages of good decontamination, resistance to hard water and being stable to an acid and an alkali and has the performances of sterilization, corrosion prevention, static electricity resistance, etc.; and finally, a lignin-furfural bio-based resin is added after the reaction, which resin is a new furfural bio-based resin, can be uniformly cross-linked on the surface layer of a yarn to adhere fiber ends to the yarn, and has a relatively strong adhesive force, such that the resin can bond the fibers, thereby limiting the movement of the fibers. The raw materials of the fluoride-free waterproof agent prepared in the present application are derived from bio-based products and are completely biodegradable in the natural environment, such that the fluoride-free waterproof agent is environmentally friendly and safe, thereby increasing the regenerative and environmentally friendly values of the product and having significant social benefits and wide market prospects.

The present invention relates to the field of corrosion prevention materials. Disclosed are anticorrosive oil and an anticorrosive material, and preparation methods therefor and the use thereof. The anticorrosive oil contains a monoalkoxy titanate, a dihydroxypropyl octadecanoate, an organosilicon defoaming agent, an antioxidant, modified nano silicon dioxide, nano titanium dioxide, graphene and aluminum tripolyphosphate, wherein the hydroxyl content of the modified nano silicon dioxide is 0.1-0.5 / nm2, and the particle size of the modified nano silicon dioxide satisfies: calculated on the basis that the particle size interval width is 5 nm, the range of particle size having the maximum proportion is 10-15 nm, and the proportion thereof is 45-55 wt%. There are no gaps between the layers of an anticorrosive material formed by means of the anticorrosive oil of the present invention, and the anticorrosive material has good sealing and good corrosion resistance, impact resistance and ultraviolet aging resistance, and can provide long-acting corrosion prevention for ocean steel piles.

Provided in the present invention are a prefabricated shear wall and a building room module including same. The prefabricated shear wall comprises a lightweight formwork assembly, a steel skeleton and embedded columns, wherein the steel skeleton comprises a plurality of horizontal connecting members arranged in parallel in the direction of the height of the prefabricated shear wall and a plurality of vertical reinforcing bars penetrating the horizontal connecting members, the horizontal connecting members being configured to provide the stiffness for the building room module when the prefabricated shear wall serves as a wall structure of the building room module. For the prefabricated shear wall and the building room module including same provided in the embodiments of the present invention, using the lightweight formwork assembly can greatly reduce the amount of steel used and the weight of the shear wall, thereby avoiding corrosion prevention and electron shielding problems. Moreover, because the horizontal connecting members and the vertical reinforcing bars are used in the steel skeleton, the problem of a traditional reinforcement cage skeleton structure being difficult to connect to a lightweight formwork assembly and embedded columns is solved; and when the prefabricated shear wall serves as a prefabricated part of a wall structure of the building room module, the horizontal connecting members can provide enough stiffness for the building room module after concrete pouring.

The invention discloses a vehicle corrosion management method, device and equipment, a medium and a product, and relates to the field of supervision and management. The method comprises the following steps: acquiring information data of a to-be-tested project vehicle; based on a preset mapping relation, determining initial material process data according to the anticorrosion grade; performing parameter mapping matching with a preset applicable parameter range according to the target environment parameter, and determining a risk parameter; determining a virtual corrosion level according to the risk parameters and the initial material process data; judging whether to adjust the material process data or not according to the virtual corrosion level and the anti-corrosion level, and if yes, performing ascending modification according to the position serial number of the initial material process data in a set anti-corrosion process library based on the anti-corrosion level according to the anti-corrosion level; and if not, determining management information based on the risk tracing result information. The management information is used for representing the corrosion resistance of the project vehicle to be tested. Through precise positioning of anticorrosion management, the technology is adjusted, and the anticorrosion performance is improved.

The invention discloses a novel high-temperature-resistant and corrosion-resistant aluminum alloy plastic-lined PP-RCT composite pipe, and relates to the technical field of composite pipelines. The composite pipe is of a five-layer gradient composite structure, wherein the outer layer is an anodized aluminum alloy base body, and the inner surface is provided with laser micro-texture anchoring points; the secondary layer is a chromium-free Dacromet anti-corrosion layer, and the interface bonding force is improved through a three-dimensional network structure; the third layer is a gradient curing bonding layer which is cured by stages to eliminate thermal stress; the fourth layer is a dynamic stress compensation layer for absorbing the thermal expansion difference between the metal layer and the plastic layer; and the inner layer is a PP-RCT functional layer which has high temperature resistance and corrosion resistance. The end of the composite pipe is sealed through laser welding, an embedded intelligent monitoring system is integrated, and axial stress and temperature are monitored in real time. Compared with the prior art, the invention is suitable for pipeline systems under extreme working conditions of petrochemical engineering, ocean engineering, high-temperature fluid transportation and the like.