188 results about "Corrositex" patented technology

The invention discloses a high-temperature-resistant nylon composite material and a production process thereof, and belongs to the technical field of nylon composite material preparation. The high-temperature-resistant nylon composite material is prepared from the following components in parts by weight: 35-48 parts of nylon resin, 7-12 parts of a heat-resistant agent, 3-8 parts of a modified anticorrosive agent, 1-3 parts of calcium stearate, 1-3 parts of a flame retardant and 2-10 parts of glass fibers, and the heat-resistant agent is prepared from 2, 4-dinitrophenol, hydrazine hydrate, p-nitrobenzoic acid, triethylamine, polyphosphoric acid and 2, 4-dinitrophenol. The nylon composite material is prepared from 2, 2 '-bis (3, 4-dicarboxylic acid) hexafluoropropane dianhydride, and the modified anticorrosive agent is prepared from fluororubber, benzyltriethylammonium chloride, lithium aluminum hydride and isophorone diisocyanate. The nylon composite material prepared by the method has excellent high temperature resistance and corrosion resistance.

The invention discloses an underwater cement-based double-liquid grouting material as well as a preparation method and application thereof. The grouting material is prepared by mixing a component A and a component B according to a mass ratio of 1: 1, the component A comprises the following raw materials: Portland cement, an admixture, a water reducing agent, a viscosity modifier, a composite flocculant, a composite thickening time control agent, a plastic expanding agent and a defoaming agent; the component B is prepared from the following raw materials in parts by mass: sulphoaluminate cement, an admixture, a water reducing agent, a viscosity modifier, a compound flocculating agent, an underground water-resistant multi-ion coupling corrosion agent, a compound thickening time control agent and a defoaming agent. The material provided by the invention has the advantages of good fluidity, good non-separability in water, strong dynamic water impact resistance, rapid hardening, high strength, high bonding strength, good corrosion resistance and the like, and is suitable for grouting and leaking stoppage of water spraying and gushing in the fields of coal mines and the like, and repairing and reinforcing of underwater concrete structures of projects such as hydraulic facilities, ocean engineering, bridges, tunnels and the like.

The invention relates to a corrosive agent and a corrosion method for displaying a 32CrNi3MoVE crystal boundary of alloy steel, which are characterized in that a common chemical product is used as an electrolytic corrosive agent after being simply proportioned, and the 32CrNi3MoVE steel quenched and tempered state original austenite crystal boundary is clearly displayed by a proper corrosion method. Chemical reagents used by the corrosive are economical and applicable, the corrosive is composed of alum, oxalic acid, dishwashing liquid, distilled water and the like which are existing in a laboratory, the proportioning of the corrosive is the key, the electrolytic corrosion method is simple to operate, alum can effectively display the grain boundary, oxalic acid provides a weak acid environment for oxidation reduction, and the corrosion effect is good. The dishwashing liquid slows down the corrosion rate of weak acid electrolyte to a metallographic specimen, weakens structure display, and improves the definition of crystal boundary display. The corroded sample is lightly polished in a polishing machine, and the corrosive agent ratio and the electrolytic corrosion method are combined to form an efficient novel corrosion method. The traditional corrosive agent capable of completely replacing saturated picric acid and a proper amount of detergent and the corrosion method effectively solve the problem of 32CrNi 3MoVE steel quenched and tempered state original austenite grain boundary display.

The invention relates to a corrosive agent for a 9Cr18 high-carbon martensitic stainless steel grain boundary. The corrosive agent comprises 49-51 ml of a nitric acid solution, 4.5-5.5 ml of a hydrochloric acid solution and 14-16 ml of an ethanol solution. According to the corrosive agent for the 9Cr18 high-carbon martensitic stainless steel grain boundary, the 9Cr18 high-carbon martensitic stainless steel grain boundary can be clearly observed under an optical microscope, and the corrosive agent has the advantages that operation is convenient, reagents are easy to obtain, the corrosion process is stable, and the corrosion effect is good.

The invention relates to the technical field of metallographic analysis, and discloses a dendritic segregation measurement method of large ingot type hot work die steel, which comprises the following steps: heat treatment; preparing a sample; and carrying out chemical corrosion and measurement analysis. During chemical corrosion, the metallographic sample is put into a beaker filled with a nitric acid alcohol solution to be corroded for 12-18 seconds, and when the surface of the metallographic sample has light gray lines, the metallographic sample is paused for 2-3 seconds, taken out, washed and blow-dried; during measurement and analysis, a scanning electron microscope is used for measurement, in the same field of view of the electron microscope, 10 points are randomly taken from the dendritic crystal trunk and the dendritic crystal respectively, the mass percentage of to-be-measured elements on each point is measured in a point scanning mode, and the segregation coefficient K is calculated. According to the method, a conventional heat treatment process is combined with the most common 4% nitric acid alcohol corrosive agent, the process is simple, and the success rate is 100%; compared with the prior art, the requirements on the formula, action time and action temperature of the corrosive agent are not required, and the method is simple and practical.

The utility model provides an anticorrosive agent spraying device for a water supply pipeline, and relates to the technical field of pipeline corrosion prevention. The top of the main body is communicated, a through pipe is mounted in the top of the main body, two sealing bearings are mounted outside the through pipe, and the sealing bearings are located in the main body; the outside of the through pipe is connected with two spraying pipes, the outer ends of the spraying pipes are connected with hoses, and the hoses are connected with the through pipe; check rings are fixedly mounted on two opposite sides of the outer part of the main body, one check ring is in contact with the sealing bearing, and the other check ring is in contact with the through pipe. The spraying pipe can be moved and adjusted according to different diameters of the water supply pipeline, the spacing distance between the spray head and the outer wall of the water supply pipeline is changed, the spacing distance between the spray head and the outer wall of the water supply pipeline is kept within a proper range, and the situation that the spraying covering effect of the outer wall of the water supply pipeline is affected by too short and too long distance is avoided; and the use requirements of water supply pipelines with different specifications can be better met.

The invention discloses a corrosion method for the prior austenite grain size of a high-carbon pearlite steel rail, which comprises the following steps of: grinding and polishing a test surface of a sample, completely immersing the polished surface into a corrosive agent during corrosion, paying attention to not contacting the bottom of a container so as to avoid influencing the corrosion effect, and taking out and observing the corrosion surface at any time in the corrosion process. After the corroded surface is in a uniform dark grey frosted state, taking out, washing and drying, and finally, slightly polishing on a polishing machine to remove a redundant corrosion layer for observation; the corrosive agent comprises hydrochloric acid, acetic acid, ferric trichloride, benzalkonium bromide, shampoo and deionized water. According to the corrosion method for the original austenite grain size of the high-carbon pearlite steel rail, the original austenite grain boundary of the high-carbon pearlite steel rail can be clearly displayed, the problem that the original austenite grain size is difficult to corrode is solved, and meanwhile the used reagent is stable, safe and easy to store.

The invention discloses an anti-freezing solution suitable for a hydraulic support and a preparation method of the anti-freezing solution, and belongs to the field of mining mechanical engineering and industrial fluid. The water-based cutting fluid comprises the following raw materials in parts by weight: 25-45 parts of an anti-freezing agent, 1-3 parts of an anti-rust agent, 5-10 parts of a nano-composite lubricant, 2-5 parts of an anticorrosive agent, 1-3 parts of a stable buffer agent, 0.1-0.5 part of an acid-base regulator, 0.5-2 parts of a surfactant, 0.02-0.1 part of an anti-foaming agent and 30-65 parts of softened water. Wherein the nano composite lubricant is composed of molybdenum disulfide nanosheets, boron nitride nanosheets and carboxymethyl chitosan, and the mixing mass ratio of molybdenum disulfide to boron nitride to carboxymethyl chitosan is 1: 1: (3-10). The preparation method comprises the step of uniformly mixing the raw materials at 40-50 DEG C to obtain the anti-freezing solution finished product suitable for the hydraulic support. The anti-freezing solution integrating excellent anti-freezing, lubricating, rust-proof and environment-friendly properties is obtained, and the preparation method is simple and suitable for large-scale production.

The invention provides a CO2 anticorrosive agent, an anti-CO2-corrosion self-repairing cement slurry system and a preparation method and application of the anti-CO2-corrosion self-repairing cement slurry system. The CO2 anticorrosive agent is prepared from the following components in parts by weight: 43 to 47 parts of calcite, 35 to 38 parts of calcium carbonate whisker and 15 to 22 parts of nano silicon dioxide. The CO2 corrosion resistant self-repairing cement paste system is prepared from the following components: 46 to 62 parts of G-grade oil well cement, 30 to 37 parts of superfine fly ash, 8 to 17 parts of phosphoaluminate cement, 4 to 6 parts of a CO2 self-repairing agent, 5 to 10 parts of a CO2 anticorrosive agent, 0.4 to 0.8 part of a fluid loss agent, 0.2 to 0.5 part of a dispersing agent, 0.05 to 0.10 part of a retarder, 0.05 to 0.10 part of a de-foaming agent and water. The CO2 corrosion resistant self-repairing cement slurry system not only has good CO2 corrosion resistance, but also has a sensitive CO2 response repairing function.

The application provides a corrosion agent and method for displaying G20CrNi4 granular bainite structure, the corrosion agent is prepared by 2%-4% nitric acid alcohol solution, hydrochloric acid and ferric chloride in the proportion of 100ml:0.3-0.7ml:0.4g-0.6g; the method for displaying granular bainite structure comprises sample preparation, corrosion agent preparation, granular bainite structure corrosion and metallographic microscope observation. The corrosion agent provided by the application is simple to prepare, the method for displaying granular bainite structure is stable and reliable, simple to operate, and can realize corrosion and clear display of granular bainite structure of carburizing bearing steel.

The invention relates to the field of material defect detection, in particular to a method for distinguishing TSD and TMD defects in silicon carbide. The distinguishing method comprises the following steps: A) etching a silicon carbide single crystal by using a corrosive agent, and then judging whether etching is qualified or not; the determination method comprises the following steps: observing the dislocation morphology of a sample by using a microscope, measuring the width of a silicon carbide silicon surface defect corrosion pit, and if the width is 70-100 [mu] m, determining that etching is qualified; b) observing the width and depth information of the corrosion pits of the to-be-detected sample which is qualified in corrosion in the step A) through a depth-of-field microscope, forming a three-dimensional image by utilizing the height difference of the corrosion pits, and distinguishing TSD and TMD defects according to the color depth of the corrosion pits in the three-dimensional image; wherein the defect with the deeper color of the corrosion pit is the TSD defect, and the defect with the lighter color of the corrosion pit is the TMD defect. The method provided by the invention can visually and clearly distinguish TSD and TMD defects with similar sizes in the silicon carbide single crystal.

The invention relates to the technical field of shield engineering materials, and discloses dry-mixed mortar for synchronous grouting of shield construction and a preparation method of the dry-mixed mortar. The dry-mixed mortar is prepared from functional preset phosphogypsum and steel slag co-calcined clinker, carbide slag micro powder, gasification slag micro powder, a pressure-sensitive gel precursor, an ion concentration sensitive latent activator, a heat sensitive self-crosslinking water reducing agent, a pH gradient response type dual anticorrosive agent and the like. The preparation method comprises the following steps: co-calcining phosphogypsum and steel slag under the condition of introducing a sulfur dioxide atmosphere to prepare a core clinker, and uniformly mixing the core clinker with other components. Through cooperation of pressure-sensitive, ion concentration and heat-sensitive multiple response systems, long open time and high-pressure instantaneous condensation of the slurry are realized, and the performance contradiction is solved; the heat-sensitive self-crosslinking water reducing agent forms an interpenetrating network to improve the early strength; and the combination of the functional preset clinker and the anticorrosive agent endows the hardened body with later-stage micro-expansion and self-adaptive corrosion resistance, so that the long-term service performance is improved.

The invention relates to the technical field of steel and iron material performance detection, in particular to a corrosion method for displaying the original austenite grain boundary of martensitic steel, a corrosion solution does not contain picric acid, a nitric acid alcohol solution and an aqua regia solution, the danger is low, raw materials are easy to obtain, the corrosion process is easy to operate, and the efficiency is high. The original austenite grain boundary of the martensitic steel can be clearly displayed without using electrochemical corrosion complex equipment; a mixed solution of hydrofluoric acid and hydrogen peroxide is selected as a corrosive agent for the austenite grain boundary of the martensitic steel, the corrosivity of the corrosive agent is just matched with the corrosion resistance of the grain boundary of the martensitic steel with medium and low carbon and the Cr content smaller than or equal to 15 wt%, the corrosive agent has sensitivity to the grain boundary, the grain boundary can be clearly displayed, the corrosive agent is not sensitive to an intragranular martensitic structure, and the good inhibition effect is achieved; therefore, a perfect austenite grain boundary display effect is obtained.

The application belongs to the technical field of glass product manufacturing, and specifically provides high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof. The fireproof glass comprises two layers of glass and a fireproof material layer arranged in the glass interlayer. The fireproof material layer is prepared from the following raw materials in parts by weight: 20-35 parts of nano-silicon liquid, 10-15 parts of modified polydimethylsiloxane, 8-16 parts of alkaline solution, 4-10 parts of polyol, 3-8 parts of carbonization agent, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of corrosion inhibitor, 0.1-0.4 parts of curing agent, 0.1-0.3 parts of leveling agent, 0.05-0.2 parts of defoaming agent, and 30-50 parts of deionized water. The nano-silicon liquid has a solid content of 30-40%. The fireproof glass has excellent fireproof performance, and has good light transmittance and impact strength.

The invention discloses a high-strength corrosion-resistant plastic bucket and a preparation method thereof, and belongs to the technical field of high-performance plastic buckets, and the preparation method comprises the following steps: preparing coated modified calcium carbonate, reinforced fibers, a corrosion-resistant agent, activated resin and mixed resin, pelletizing, and carrying out injection molding to obtain the high-strength corrosion-resistant plastic bucket. The plastic bucket has excellent and stable mechanical properties through preparation of the coating modified calcium carbonate, pretreatment of the chopped glass fibers and adjustment of the ratio of all the components. The tensile strength is high, the impact resistance is high, common scenes such as falling and collision in logistics transportation can be easily handled, the breakage rate in the transportation process is greatly reduced, and the after-sales loss of enterprises and the use risk of users are reduced; meanwhile, the lifting handle is good in hanging load stability and not prone to deformation even if loaded with heavy objects, the requirement for long-term repeated use in the fields of industry, chemical engineering and the like can be met, the service life of products is prolonged, and user experience is improved.

The invention discloses a copper-molybdenum metal etching solution as well as a preparation method and application thereof, and relates to the technical field of etching solutions. Comprising urea peroxide, a urea peroxide stabilizer, an acidic composition, a self-assembled membrane compound, a corrosion inhibitor, a complexing agent and the balance of water. Urea peroxide is used as a main oxidizing agent, an acid composition is used as a main corrosive agent, and a complexing agent and a urea peroxide stabilizer are matched to ensure the use safety in the etching process, so that safe and effective etching of copper and molybdenum metals can be realized. Furthermore, a self-assembled film is generated through a reaction of a self-assembled film compound and a corrosion inhibitor, and the self-assembled film is adsorbed on the surface of the metal oxide oxidized by urea peroxide to control the corrosion rate of the acidic composition, so that the etching precision of the product is ensured, and the problems of chamfering, etching indentation, large unilateral etching variation and the like are avoided; and the stability of the etched taper angle is improved.

The invention provides a metallographic detection method for the grain size of an AZO target material, and belongs to the technical field of detection. The AZO target material is ground through coarse grinding, fine grinding and polishing, impurities on the to-be-observed face of the AZO target material can be removed through coarse grinding, meanwhile, the roughness of the AZO target material is preliminarily reduced, the roughness of the to-be-observed face of the AZO target material can be further reduced through fine grinding, the smooth surface can be obtained through polishing, and therefore follow-up corrosion is facilitated; the salpeter solution is used as the acid corrosive agent, so that the grain structure of the AZO target material can be shown, and the AZO target material cannot be damaged; corrosion is carried out at 18-30 DEG C, so that the corrosion rate can be increased; by controlling the corrosion time, grains can be completely displayed, the boundary is clear, a grain boundary image can be clearly and rapidly captured under a metallographic microscope, and then the grain size of the AZO target material can be rapidly measured.

The application discloses a kind of ultra-wear-resistant high molecular sliding materials ZMSM, belong to high polymer composite material and structural bearing technical field;The sliding material is made by ultra-high molecular polyethylene and a variety of functional additives by blending, forming process;The additive includes one or more of glass bead / glass fiber, carbon fiber, graphite, carbon black, coupling agent, stabilizer, lubricant, anti-wear agent, anti-aging agent and anti-chemical corrosion agent;The material of the application has excellent sliding characteristics, high allowable pressure, wide temperature range adaptability, very low friction coefficient and ultra-long service life, especially suitable for high-speed, high-load, wide-temperature-range working conditions under structural bearing, sliding plate, support and other fields.Compared with traditional polytetrafluoroethylene sliding material, the allowable pressure of the material of the application is increased by 2 times, the cumulative sliding displacement life is increased by more than 5 times, the applicable temperature range is expanded to-50°C~+70°C, and the wear rate is significantly reduced under high-speed motion conditions;The application also discloses the preparation process of the material, and the process is simple and easy to industrial production.

The siloxane-based corrosion resistant adhesive is prepared from a reaction mixture such that after curing in the form of a layer, the formed siloxane-based adhesive has a stable modulus and a shear storage modulus at a frequency of 1 Hz of no more than 0.2 MPa as measured by DMA (Dynamic Mechanical Analysis). In addition, the cured siloxane-based adhesive layer is optically transparent, and after lamination to a silver nanowire film, the silver nanowire film has a change in resistance of less than 10% after aging for 500 hours at a relative humidity of 65 DEG C / 90%. The reaction mixture forming the siloxane-based adhesive includes at least one vinyl-functionalized siloxane, at least one hydrogen-functionalized siloxane, at least one hydrosilylation catalyst, at least one siloxane tackifying resin, and at least one anticorrosive agent.

The invention discloses a corrosion device suitable for metallographic inspection in a severe environment and a use method, relates to the technical field of metallographic inspection, and solves the problem that a field environment has great influence on a metallographic corrosion process and a corrosion effect. The device comprises an isolation layer, a breathable layer, a heating reagent layer, an isolation bonding layer and a corrosive agent adsorption layer, the breathable layer, the heating reagent layer, the isolation bonding layer and the corrosive agent adsorption layer are sequentially connected from bottom to top, and the breathable layer and the heating reagent layer are coated with the isolation layer; the corrosion device is packaged in a sealing bag, and the corrosion device is protected when not in use. The corrosion device for metallographic inspection can automatically heat, the corrosive agent does not flow, and the corrosion device has self-adhesion, can be firmly attached to the metal surface and has the advantages of being capable of adapting to the severe field environment, convenient to carry, easy to operate, safe and the like.

Provided is a glass-coated product having excellent corrosion resistance while being easy to manufacture.　The glass-coated product that is provided comprises a metal product and a glass layer (GL) bonded to a surface of the metal product with the glass layer being baked onto the metal product. The metal product is provided with a base part (BP) formed from an iron-based metal and a highly corrosion-resistant part (HP) formed from a highly corrosion-resistant metal having a higher content of at least one of nickel and chromium than the iron-based metal. The surface of the metal product is provided with a base surface (SB) which is a surface of the base part (BP) and a highly corrosion-resistant surface (SH) which is a surface of the highly corrosion-resistant part (HP). When an end edge part of the glass layer (GL) is viewed from the thickness direction of the glass layer (GL), the highly corrosion-resistant surface (SH) is provided so as to extend from an end edge of the metal product, and an end edge (GLe) of the glass layer is positioned on the highly corrosion-resistant surface (SH).

The invention relates to the technical field of cable sheath materials, in particular to a preparation method of an ocean engineering mud-resistant cable sheath material which comprises the following raw materials in parts by weight: 50-80 parts of base resin, 5-15 parts of a wear-resistant reinforcing agent, 10-20 parts of a chemical corrosion-resistant agent, 9-12 parts of a flame retardant and 0.5-1 part of an anti-aging agent, 15-30 parts of ethylene propylene diene monomer; the wear-resistant reinforcing agent is prepared from 15 to 22 parts of carbon fiber and 5 to 10 parts of nano silicon dioxide; the chemical corrosion resistant agent comprises 30-33 parts of barium sulfate and 5-10 parts of organic silicon modified polyester resin; the flame retardant comprises 100 parts of magnesium hydroxide and 15 parts of zinc borate. According to the invention, the high-density polyethylene and the ethylene propylene diene monomer are selected and added as basic resin, so that the slurry resistance required by use in ocean engineering can be effectively improved.

The invention discloses low-shear lubricating oil for a gearbox of a wind turbine generator, and relates to the technical field of industrial lubricating oil, and the low-shear lubricating oil for the gearbox of the wind turbine generator comprises the following components in percentage by weight: 0.5-5% of an anti-wear agent, 0.05-2% of an antioxidant, 0.05-2% of a corrosion inhibitor, 0.01-0.5% of a defoaming agent and the balance of base oil, the anti-wear performance of the lubricating oil is improved by preparing the anti-wear agent and adding the anti-wear agent into the lubricating oil, and the shear value of the lubricating oil is reduced, the oxidation process of the lubricating oil is delayed, the corrosion resistance of the lubricating oil is improved and the lubricating effect of the lubricating oil is optimized by combined addition of the antioxidant, the corrosion inhibitor and the defoaming agent; therefore, the service life of the gearbox is prolonged.

The invention discloses a steel / copper foil dissimilar metal laser welding lap joint microstructure corrosive, and relates to the technical field of metallographic corrosion. The corrosive agent is composed of 100-200 mL of ethyl alcohol, 50-100 mL of hydrochloric acid and 5-10 g of copper sulfate powder, synchronous apparent corrosion of grain boundaries on the two sides of a steel / copper foil dissimilar metal interface is achieved through an optimized proportion, and the corrosive agent is particularly suitable for microstructure characterization of a steel / copper foil lap joint formed through laser welding. The corrosive agent disclosed by the invention can complete double-phase grain boundary corrosion in a normal-temperature environment, synchronously shows grain morphology of a weld zone, a heat affected zone and a base material within 20-40 seconds, and solves the problem of structure contrast distortion caused by traditional step-by-step corrosion; and a key analysis means is provided for researching metallurgical reaction, grain growth orientation and element diffusion behavior of the dissimilar metal welding interface. The method has the characteristics of convenience in operation, low cost, good reproducibility and the like.

This application relates to the field of magnesite concrete, and specifically discloses a magnesite concrete with high sulfate erosion resistance and a preparation method thereof. The magnesite concrete comprises the following components in parts by weight: 360 - 430 parts of cement, 1128.5 - 1146.6 parts of coarse aggregate, 663 - 689 parts of fine aggregate, 11.52 - 13.76 parts of silica fume, 160 - 185 parts of mixing water, 3.2 - 3.8 parts of water reducer, 17.28 - 20.64 parts of gneiss powder, and 6.12 - 7.36 parts of sulfate corrosion inhibitor; the preparation method is: first, mix and stir all raw materials except mixing water and water reducer, and then add mixing water and water reducer and continue to stir to obtain the magnesite concrete with high sulfate erosion resistance. The magnesite concrete of this application has strong mechanical properties and sulfate erosion resistance, and excellent durability.

The application discloses a kind of corrosion methods for revealing alloy sample metallographic structure, comprising: step S1, preparation electrolytic etchant: using oxalic acid, sodium bicarbonate and concentrated nitric acid preparation final concentration is 0.25-0.5mol / L sodium oxalate and 0.15-0.3mol / L nitric acid mixed aqueous solution;Step S2, electrolytic etching of corrosion piece: electrolytic etchant is poured into electrolytic etching instrument, and the alloy sample to be corroded is placed in electrolytic etching liquid and electrolytic etching is carried out.The electrolytic etchant of the application uses oxalic acid, sodium bicarbonate and concentrated nitric acid as reactant, and is prepared by chemical ion reaction.After the preparation of etchant is finished, a small amount of carbonate ions and hydrogen ions are still stored in the etchant, so that a small amount of carbonate ions and hydrogen ions will continue to react when the alloy sample is electrolyzed, and micro-bubbles are attached to the alloy sample, so that the metallographic photo taken has stereoscopic imaging effect, and the grain boundary is clear and identifiable.

The application discloses an environment-friendly and energy-saving diesel engine clean fuel, and particularly relates to the technical field of clean fuel.The environment-friendly and energy-saving diesel engine clean fuel is prepared from an additive and kerosene in a mass ratio of 1:(300-430).The additive comprises the following raw materials in parts by mass: a cetane improver 40-62 parts, an anti-knock agent 5-10 parts, an anti-corrosion agent 15-30 parts, dimethyl silicone oil 8-10 parts, and a cleaning agent 3-6 parts.The additive is mixed with kerosene, the stability of the fuel is further improved, the utilization rate of the fuel is improved, so that the prepared clean fuel can be effectively combusted in use, and environmental pollutants generated in the combustion process are reduced.

The invention discloses aerospace-grade wide-temperature-range anti-radiation lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease. The perfluoropolyether lubricating oil comprises the following components in parts by weight: 80-85 parts of perfluoropolyether base oil, 12-16 parts of a polytetrafluoroethylene thickening agent, 0.8-1.5 parts of an anti-radiation additive, 1.5-2.5 parts of a nano extreme pressure anti-wear agent and 0.2-0.5 part of an anticorrosive agent. Through innovative design and synergistic effect of a material system, the high-performance lubricating grease which is excellent in three core indexes of wide temperature range, radiation resistance and long service life is successfully developed, the comprehensive technical effect is remarkable, and the blank in the prior art is filled.

The application discloses an anti-stress corrosion material based on an oil slurry steam generator tube plate and a preparation method thereof, and belongs to the technical field of anti-stress corrosion material preparation. The preparation method of the anti-stress corrosion material based on the oil slurry steam generator tube plate comprises the following steps: step one, adding deionized water to a water-based polytetrafluoroethylene resin dispersion liquid, stirring and mixing, then adding a composite high-temperature stabilizer and an anti-stress corrosion agent in sequence, continuing to mix, then adding a surfactant and a coupling agent, stirring, dispersing and treating to obtain a composite coating; step two, cleaning the surface of a Q345R steel plate with ethanol, then performing sand blasting treatment, cleaning and preheating to obtain a pretreated steel plate; step three, loading the composite coating into a spray gun tank, spraying, solidifying, sintering and cooling to obtain the anti-stress corrosion material based on the oil slurry steam generator tube plate. The material prepared by the method has excellent anti-stress corrosion performance and high-temperature stability.

The invention relates to the technical field of power cables, and provides a corrosion-resistant cross-linked polyethylene insulated power cable which comprises a conductor, a cross-linked polyethylene insulating layer, a metal shielding layer, an armor layer and an outer sheath layer from inside to outside. The outer sheath layer comprises the following components in parts by weight: 55-65 parts of polyethylene, 12-18 parts of polyvinyl chloride, 2-4 parts of ethylene-vinyl acetate, 20-24 parts of carbon black, 15-20 parts of a filler, 10-12 parts of a plasticizer, 2-4 parts of a corrosion inhibitor, 2-4 parts of an anti-aging agent, 12-15 parts of magnesium hydroxide, 24-30 parts of aluminum hydroxide and 1-2 parts of dicumyl peroxide; the filler comprises talcum powder, barium carbonate and pretreated magnesium oxide in a mass ratio of 2: 1: (0.6-1.3); the pretreated magnesium oxide is lithium fluoride coated magnesium oxide. Through the technical scheme, the problem of insufficient corrosion resistance of the crosslinked polyethylene insulated power cable in the prior art is solved.