93results about How to "Insulation erosion" patented technology

The invention discloses a lithium ion battery composite negative electrode material and a preparation method thereof. The surface of nanometer silicon is subjected to oxidization treatment to obtain nanometer silicon coated with silicon dioxide on the surface; the nanometer silicon coated with silicon dioxide on the surface is mixed with a lithium source uniformly to obtain a precursor; and the obtained precursor is placed into inert gas to be heated to obtain a nanometer silicon material coated with lithium silicate, and the product is subjected to washing, centrifugal separating and drying to obtain the lithium ion battery composite negative electrode material. By taking a uniform primary oxide layer on the surface of the nanometer silicon material as the substrate, an in-situ chemical reaction is performed to realize uniform coating of lithium silicate, so that stability between nanometer silicon and air or an electrolyte interface is improved effectively, thereby greatly improvingelectrochemical performance of the nanometer silicon material.

An environment-friendly nano-epoxy silicone heavy anti-corrosion coating comprises a component A and a component B, wherein the component B is polyamide, and the component A is prepared by water-borne epoxy resin, a solvent, silicon carbide, aluminum oxide, nano-quartz powder, titanium dioxide power, zinc powder, aluminum powder, ceramic powder, cobalt-nickel ultrafine metal powder and graphite. A using method of the environment-friendly nano-epoxy silicone heavy anti-corrosion coating is that the component A and the component B are mixed evenly according to the weight ratio of 30-50:1 and then directly sprayed or brushed on the surface of an anti-corrosion object at the normal temperature. A coating layer formed by the coating has good abrasion resistance, corrosion resistance, impact resisting performance and flexibility and can effectively isolate corrosion of acid, alkali, salt and sea water. The surface of the coating layer is compact and smooth and has small resistance to a transmission medium. The coating can be widely applied to oil transportation pipelines, oil storage tanks, chemical equipment, ships, grinding wheel blades, pumps, dust removers, offshore steel structures and the like. In addition, the environment-friendly nano-epoxy silicone heavy anti-corrosion coating is water-based coating, does not contain harmful ingredients and is convenient and efficient in use.

A metal ceramic anticorrosive paint mainly includes kaolin, nanometer aluminium powder, nano alumina, silicon carbide, nano quartz powder, ceramic powder, asbestos powder, graphite powder, a pigment, a filler, epoxy resin, an additive and a mixed organic solvent. The solid powders are subjected to nano ultrafine treatment to reach a granularity of 20-200 nm. The paint provided by the invention is a single-component paint, which is simple in manufacturing process, economical and environment-friendly. The coating of the paint does not require a primer and can be used alone without adding special finish. The coating has excellent wear resistance, corrosion resistance, impact resistance, stability, strong adhesion, compactness and stability, and can effectively prevent erosion by acid, alkali, salt and seawater. In addition, the paint can be widely applied to oil pipeline, oil storage tank, chemical equipment, ships, bridges, offshore platforms and other steel structure buildings.

The present invention provides a positive active material comprising a core material and a coating layer. The core material comprises a lithium salt which is one or more selected from the group consisting of LiFeBO3, Li2FeSiO4, Li5FeO4, Li6CoO4, Li6MnO4, Li2NiO2 and Li2CuO2. The coating layer coats the core material and comprises carbon and metal carbide. The invention also provides a positive electrode containing the positive active material and a lithium-ion battery, the coating layer of the positive active material can isolate the influence of water in the air on the core material, the stability and conductivity of the material are improved, and the electrical conductivity and stability of the battery are improved.

The invention belongs to the technical field of graphite electrodes, and provides a graphite electrode nanometer antioxidant and a preparation method thereof. The graphite electrode nanometer antioxidant is prepared from the following components in parts by weight: 20 to 30 parts of water, 20 to 30 parts of nano-oxide ceramic powder, 15 to 20 parts of graphene, 10 to 20 parts of dispersant, 10 to15 parts of film-forming additive, 6 to 12 parts of stabilizer and 5 to 10 parts of polyhedral oligomeric silsesquioxane, wherein the dispersant is polyethylene glycol; the film-forming additive is thiol-based chitosan; the stabilizer is a mixture of zinc borate and polyetherimide in the mass ratio of 2 to 1. By adopting the graphite electrode nanometer antioxidant, the problem of conductivity decrease of a graphite electrode after introduction of the graphite electrode under the risks of peeling and falling off due to cracks generated in the heating process of a generated antioxidation layersince the antioxidation temperature is not high during use of the graphite electrode nanometer antioxidant in the prior art is solved.

The invention relates to a binder with a three-dimensional network structure and a preparation method and an application thereof. The binder is formed by cross-linking a low-molecular-weight polyurethane prepolymer by taking high-molecular-weight polyacrylic acid and high-molecular-weight polyurethane as chain-shaped brackets. The binder has the cohesiveness of polyacrylic acid and the high elasticity of polyurethane, and can firmly bind an active material and a conductive agent together. In the charging and discharging process, the active material expands and contracts, and the binder can expand and contract along with the expansion and contraction of the active material. Thus, the structural stability of an electrode material can be well maintained, the electrode does not come off in thecharging and discharging process, and the cycling stability and the rate capability can be improved.

The invention provides a positive active material. The positive active material comprises a core and a coating layer, wherein the coating layer is arranged on a surface of the core, the material of the core comprises Li5FeO4, and the material of the coating layer comprise Mo2C and carbon. A preparation method of the positive active material, a positive electrode comprising the positive active material and the high-specific energy power battery are also provided. With the positive active material provided by the invention, the influence of water in air on the core layer Li5FeO4 can be isolated,the material stability is improved, and the conductivity and the stability of the battery are improved.

The invention discloses a pipeline under-pressure leakage stoppage repairing and multi-layer long-acting anti-corrosion device and a construction method thereof and belongs to the technical field of surface engineering. A six-layer protection system including a leakage stoppage and strengthening layer, anticorrosive paste, an inflaming retarding anti-corrosion belt, an oily blocking layer, an anti-corrosion protection cover and a contamination-preventing and weather-proof face coating is adopted, due to the extremely good tracing ability of the six-layer protection system, the six-layer protection system can be tightly combined with a base material, a protection film composed of the anticorrosive paste and the inflaming retarding anti-corrosion belt and surface oxide of the base material can be subjected to complexation so as to prevent secondary corrosion, meanwhile, the erosion of a corrosive medium on the base material is isolated, sealing protection on anti-corrosion components isachieved through an external oily material insulation layer and the nonmetal protection cover, it is ensured that the anti-corrosion components are not lost, the contamination-preventing face coatingof the inflaming retarding nonmetal protection cover has prominent dirt-preventing performance and good weather-resisting performance, and a permanent outer protection function is provided for the protection cover.

The invention discloses an anchor bolt for a marine wind power base, which comprises a screw rod (1), wherein both ends of the screw rod (1) are respectively provided with a thread section (2); at least one end of the screw rod (1) is provided with a protective nut (3), a gasket (4) and an antirust cover (5) capable of covering the exposed thread section (2); the surfaces of the screw rod (1), the nut (3) and the gasket (4) are respectively provided with a chromium-free Dacromet coating (6); an epoxy glass lamella coating (7) is arranged on the chromium-free Dacromet coating (6) of the screw rod (1); and an anticorrosion sleeve (8) matched with the outer diameter of the screw rod (1) is also sheathed on the screw rod (1). The thread section (2), the gasket (4) and the nut (3) at the end provided with the antirust cover are respectively coated with an epoxy zinc-rich primer which performs the functions of shielding and cathodic protection. The thickness of the chromium-free Dacromet coating (6) is 10.0-11.9 micrometers, and the thickness of the dry film of the epoxy glass lamella coating (7) is 50-80 micrometers.

The invention discloses a three-base-point roof separation layer monitor, and relates to a coal mine production field monitoring instrument. The three-base-point roof separation layer monitor comprises a guide pipe, a mechanical shell, an electrical shell and three sets of independent separation layer monitoring mechanisms same in structure, and is used for respectively monitoring a shallow base point A and a deep base point B of a separation layer and a deep base point C in a steady rock layer, which is 8-14 meters from a tunnel roof. A mechanical and electrical combined monitoring device isdesigned in the invention; displacement between an anchor fluke and the top of a device due to the separation layer is converted into an electrical signal of a potentiometer; displacement of the separation layer is displayed after processing; the measurement effectiveness and accuracy can be improved; the three sets of mutually independent separation layer monitoring mechanisms are designed; the deep base point in the steady rock layer, which is 8-14 meters from the tunnel roof, is increased in the monitoring base points; the base point is used as the stationary reference point, and used as amovement reference of the roof separation layer; and thus, the accuracy and the reliability of the measured separation layer data are ensured.

The invention relates to a repair method for a steel storage tank corrosion pit and belongs to the technical field of welding. A pit after repair comprises three parts, including aluminum for filling up the pit, an aluminum-sprayed erosion resistant coating on the inner surface and a carbon fiber sheet back-up coat on the outer surface. In the repair method, the aluminum for filling up the pit plays the roles of smoothing tank wall and facilitating construction of the erosion resistant coating in later period and delaying of tank wall corrosion because the erosion resistant coating is used as a positive pole after corrosion perforation; the aluminum-sprayed erosion resistant coating on the inner surface can isolate direct contact between stored matter and steel of the tank wall and play the roles of delaying or even stopping further erosion and protecting the tank wall; the carbon fiber sheet back-up coat on the outer surface plays the roles of solidifying the tank body and shearing internal pressure so as to prevent discarding of the storage tank caused by the fact that the tank wall is thinned and cannot bear internal pressure. The combined use of the three parts can lastingly and effectively protect and solidify the storage tank.

The invention discloses an anti-decarbonizing agent for bearing steel thermal treatment for preparing a bearing. The anti-decarbonizing agent is prepared from the following raw materials in parts by weight: 5-10 parts of borax, 5-15 parts of water glass with modulus of 1.5, 1-3 parts of defoamer and 72-89 parts of water. The preparation method comprises the following steps: first, heating water to 60-70 DEG C; adding borax to stir and dissolve; adding the defoamer till borax is fully dissolved; and uniformly stirring and gradually adding water glass with modulus of 1.5 to obtain the anti-decarbonizing agent. The anti-decarbonizing agent disclosed by the invention can form a compact chemical protective film on the surface of bearing steel to prevent a decarbonizing layer from being formed on the surface of the bearing steel due to thermal treatment, so that the grinding allowance can be reduced by 20-30%, thereby improving the processing efficiency. As the compact chemical protective film on the surface of a steel product can isolate corrosion of oxygen and water vapor in a put process after thermal treatment, anti-rust treatment is reduced or avoided. The anti-decarbonizing agent disclosed by the invention is particularly suitable for thermal treatment of a mesh belt furnace.

The invention discloses an efficient silicon solar module, which comprises a tempered glass layer, an ethylene-vinyl-acetate (EVA) layer I, a silicon layer, an EVA layer II and a back plate, wherein at least one antireflection film also coats the outer surface of the tempered glass layer; the thickness of each antireflection film is d; d=(n+0.25)lambda; lambda is 400-760nm; the exposed surface of the EVA layer I is a high-transmittance modified EVA plastic layer coated with an oxygen barrier layer; the exposed surface of the EVA layer II is a thermally stably modified high-heat dissipation EVA plastic layer coated with the oxygen barrier layer; and the back plate is in a multi-layer structure. The efficient silicon solar module has the advantages of stable structure, high solar utilization efficiency and high generation efficiency, and simultaneously has good heat dissipation property.

The invention relates to a paint, in particular to a corrosion-inhibiting and crust-promoting paint of the internal wall of a garbage incinerator. Talcum powder with the proportion of 5 percent to 20 percent, aluminous powder with the proportion of 50 percent to 80 percent, silica powder with the proportion of 1 percent to 5 percent, bentonite with the proportion of 1 percent to 10 percent and fluorite powder with the proportion of 1 percent to 10 percent are taken as raw materials, borax with the proportion of 1 percent to 10 percent and sodium tripolyphosphate with the proportion of 1 percent to 5 percent are taken as bonding agents, tartaric acid conservant occupies the proportion of 5 percent to 10 percent, a proper amount of water is added, and a paste paint is formed after mixing, grinding and stirring. The paint has the advantages of being capable of preventing the castable of the internal wall of the garbage incinerator from corrosion and prolonging the service life of the internal wall of the garbage incinerator, and the paint is simple to be prepared and easy to be applied.

A high-performance quantum dot white light LED and a preparing method thereof belong to the field of semiconductor illumination. The high-performance quantum dot white light LED is based on an electroluminescent blue light LED chip. The high-performance quantum dot white light LED is obtained through successively coating a CdSe/CdS/ZnS quantum dot thin-film layer which emits red light and a Cu:ZnInS/ZnS/ZnS:Al quantum dot thin-film layer that emits green light. According to Cu:ZnInS/ZnS/ZnS:Al quantum dot which emits green light, Al3<+> can be packaged through kernel doped Cu2<+> and an external ZnS housing layer, thereby improving light/thermal stability. The CdSe/CdS/ZnS gradient alloy quantum dot which emits red light supply multiple-housing-layer protection, thereby reducing defects caused by surface crystal lattice mismatch and preventing light degeneration. The coating manner of layered structure can remarkably suppress energy transmission and re-absorption between quantum dots and furthermore improves light emitting efficiency. The prepared quantum dot white light LED is suitable for an occasion wherein low color temperature, high color rendering index and high light emitting efficiency are required, and is particularly suitable for the displaying and illuminating field with relatively high requirement for light emitting stability.

The invention discloses a new lattice type pile leg of a self-elevating offshore platform, comprising a pile leg body arranged in parallel with a triangle, and is characterized in that: the pile leg body comprises a square steel pipe, and the inside of the square steel pipe is arranged along the length direction The stiffening rib is welded with a circular steel pipe, the interior of the circular steel pipe is hollow with water, and the space between the square steel pipe and the circular steel pipe is filled with concrete. The novel lattice type pile legs of the self-elevating offshore platform of the invention have the characteristics of high stability, strong bearing capacity, low cost, strong corrosion resistance, excellent seismic resistance, convenient maintenance and long service life.

The invention discloses a matched protection device for a new energy charging facility. The device comprises a bottom supporting seat, the upper surface of the bottom supporting seat is fixedly connected with a charging box, the upper surface of the bottom supporting seat is fixedly connected with an anti-collision fence, the front surface of the charging box is provided with a sealing groove, a sealing partition plate is arranged in the sealing groove, and one side of the sealing groove is hinged with a sealing door. An observation window is arranged on the sealing door, a convenient lockingmechanism is arranged on the sealing door and located on one side of the observation window, a sealing ring is fixedly connected to the back face of the sealing door, a man-machine exchange module isfixedly connected to the side face of the sealing groove, and a charging connecting wire is arranged on the side face of the sealing groove and located below the man-machine exchange module. Accordingto the matched protection device for the new energy charging facility, through cooperative arrangement of the sealing groove, the sealing door and the sealing ring, rainwater erosion can be more properly isolated when the device is in cloudy and rainy weather in the using process, and through arrangement of the anti-collision fence, a driver can be reminded when the sight line effect is poor in the using process.

The invention discloses a flexible machining clamp for an automobile hub. The clamp comprises a clamping jaw, a clamping jaw driving seat and a clamping jaw disc, the clamping jaw driving seat is movably arranged in the hollow position of the middle of the clamping jaw disc, and a plurality of driving grooves which are obliquely formed in the axial direction of the clamping jaw disc are evenly distributed in the outer wall of the clamping jaw driving seat. The clamping jaws are connected to the clamping jaw disc in a sliding mode in the radial direction of the clamping jaw disc, a sliding arm is arranged on each clamping jaw, each clamping jaw is connected with the corresponding driving groove in a sliding fit mode through the corresponding sliding arm, and arc clamping jaw grooves distributed in a multi-step mode are formed in each clamping jaw and used for being matched with hubs of various sizes. Each clamping jaw is provided with a plurality of arc clamping jaw grooves distributed in a step shape, hubs of different sizes can be clamped without disassembly, the machining efficiency is improved, and the use cost is reduced. The designed clamping jaw driving seat structure adopts a hexahedron structure, so that the indexing is more accurate.

The invention discloses a making method of a nutritional rice cake for infants. The making method comprises the following steps that 1, sardine powder is prepared; 2, the rice cake is prepared, wherein the sardine powder is processed with moderate flame microwaves for 10-15 seconds, glutinous rice flour, ginger juice, ground seaweed, Chinese olive powder, walnut powder, wheat meal, sesame powder, spinach juice, crude salt and pickled cabbage juice are added and mixed, rolling and forming are formed to obtain a cake blank, the surface of the cake blank is coated with a layer of rice cake protective agent and then is brushed with a layer of plant oil mixed liquid after air-drying, the cake blank is put in a baking oven, baking is performed under the conditions of the upper flame temperature of 130-150 DEG C and the lower flame temperature of 145-157 DEG C for 40-48 minutes, cooling is performed for 6-10 hours, then ultraviolet sterilization is performed for 15-20 minutes, and a rice cake finished product is obtained after sealing and package. The made nutritional rice cake for infants has the advantages of being attractive in appearance, good in taste and rich in nutrition, promotes infant growth and has a wide market popularization value.

The invention belongs to the technical field of rubber composite materials, and particularly relates to an anti-aging rubber material and a preparation method thereof. The anti-aging rubber material is prepared from the following components in parts by weight through high-temperature vulcanization: butadiene styrene rubber, butadiene rubber, chlorinated polyethylene, zinc oxide, stearic acid, a flame retardant, a modified reinforcing anti-aging agent, a vulcanizing agent sulfur, an accelerant and a softening agent. The preparation method comprises the following steps: sequentially adding the styrene-butadiene rubber, the butadiene rubber and the chlorinated polyethylene for plastifying and uniform mixing; and sequentially adding the other raw materials, carrying out uniform mixing, and carrying out high-temperature vulcanization. According to the invention, a silane coupling agent is subjected to grafting reaction with an antioxidant and white carbon black at the same time, the micromolecular antioxidant is chemically grafted to the white carbon black through the silane coupling agent, and the silane coupling agent and a rubber chain are cross-linked through high-temperature vulcanization to form a net structure; and thus, the dispersing performance of the white carbon black is improved, and meanwhile, the migration of the anti-aging agent in the rubber is avoided, so the anti-aging performance of the rubber is enhanced.

The invention discloses a slag ladle lining heat-insulation coating system and a construction process, the heat-insulation coating system structurally comprises a modeling material layer, a wear-resistant material layer and a heat-resistant coating layer, the modeling material layer is directly coated on a slag ladle lining to serve as a bottom layer of the coating system; the wear-resistant material layer is coated on the modeling material layer to serve as a middle layer of the coating system; the heat-resistant coating layer is coated on the wear-resistant material layer and is used as a surface layer of the coating system. High-quality raw materials are adopted, the proportion is optimized, meanwhile, through material structure design, the heat-resistant coating layer, the wear-resistant material layer and the modeling material layer adopt material systems with different temperature bearing properties according to different positions of the heat-resistant coating layer, the wear-resistant material layer and the modeling material layer, and a gradient heat-conducting material system is formed; a slag ladle lining heat insulation coating system with hierarchical optimization heat insulation, high strength, high corrosion resistance and ultra-long service life is formed, the one-time ladle overturning rate can be increased to 99% or above, and the service life of the slag ladle lining heat insulation coating system is almost the same as that of a slag ladle body.

The invention discloses an insect preventing device of litchi, and relates to the field of an insect preventing device. The Insect preventing device of litchi comprises several first vertical rods, several second vertical rods, several cross rods and a compound gauze; several first vertical rods are vertically mounted on the ground at the periphery of a fruit garden at intervals; several second vertical rods are vertically mounted on the ground in the fruit garden at intervals, and several cross rods are arranged at the top part of the fruit garden; both ends of the cross rods are connected with several first vertical rods and several second vertical rods; the compound gauze is sleeved on the several cross rods and several first vertical rods, one end of the compound gauze far from the cross rods is extended to the ground of the fruit garden. The insect preventing device of litchi can effectively prevent injurious insects and is free from pollution.