59results about How to "Protect structural stability" patented technology

The invention discloses a high-nickel ternary lithium ion power battery electrolyte and a high-nickel ternary lithium ion power battery. The electrolyte includes a non-aqueous organic solvent, a lithium salt, a conductive additive, a film forming additive and an infiltration additive, wherein the conductive additive is lithium difluorophosphate, the film forming additive is ethylene sulfate, and the infiltration additive is at least one of fluorophosphazene and fluoroethylene carbonate; and synergism and mutual promotion of the three additives makes an excellent SEI film be formed on the surface of an electrode and effectively promotes all dynamic processes in the lithium ion battery. The power battery electrolyte has the advantages of good lithium ion transmission characteristic, good oxidation resistance, guaranteeing of high power characteristic and good cycle performances of the power battery, and high safety.

The invention discloses a lithium ion secondary battery positive electrode material and a preparation method thereof. Doping of a lithium secondary battery positive electrode active substance is carried out by virtue of the synergistic effect among specific elements so as to realize simultaneous protection for a lithium-oxygen layer and a transitional metal-oxygen layer in a lithium cobalt oxide layered structure. By virtue of the optimal design of a secondary sintering technology, gradient doping or wrapping of the specific elements can be realized, so that the structural stability of large-particle lithium cobalt oxide of the material in a circulating process, particularly under a high-voltage condition, is better protected, and more excellent electrochemical performance is obtained; therefore, the lithium ion secondary battery positive electrode material can simultaneously meet the requirements on a high-discharge-voltage platform, high capacity and good circulating performance.

The invention belongs to the technical field of lithium ion battery preparation, and specifically relates to nickelic ternary anode material power lithium ion battery electrolyte and a preparation method thereof. The electrolyte consists of electrolyte lithium salt, a non-aqueous organic solvent and functional additives, wherein the functional additives comprise an alkyl nitrile additive, fluorinated chain carboxylate, a lithium salt additive and a cathode film forming additive; and the content of the functional additives is 0.5-10% of the weight of the electrolyte. The electrolyte provided bythe invention interacts with transition metal in a nickelic ternary anode material through the functional additives and is decomposed on the surfaces of the anode and cathode to form stable interfacefilms, so as to inhibit the metal ionic catalysis activity and decrease battery side reactions, so that the electrolyte has favorable anti-oxidant and film forming characteristics, is capable of effectively improving the high-temperature storage performance, safety performance and cycle life of nickelic ternary anode material power lithium ion batteries, effectively inhibiting the generation of battery expansion and ensuring the high power characteristic of the batteries at the same time.

The invention provides a conductive fabric and a preparation method thereof. The conductive fabric comprises, from inside to outside, an adhesive force improving layer attached to the surface layer ofa fabric substrate, a liquid metal layer, an oxygen isolation protective layer and a packaging protective layer. The preparation method comprises: applying the adhesive force improving layer to the surface layer of a fabric substrate, coating the adhesive force improving layer with the liquid metal layer, coating the liquid metal layer with the oxygen isolation protective layer, and coating the oxygen isolation protective layer with the packaging protective layer. The coating manner includes spraying, brush coating, flow coating or printing. Compared with a conductive fabric in the prior art,the conductive fabric is excellent in conductivity, fold resistance, laundering durability and tensile property. The preparation method is simple and reliable.

The invention discloses a method for modifying a nickel lithium manganate material of a lithium-ion battery. The method comprises the following steps: preparing a pure-phase nickel lithium manganate precursor, preparing a strontium-ferrite-molybdenum solution, adding the pure-phase nickel lithium manganate precursor into the strontium-ferrite-molybdenum solution to react, and drying so as to obtain gel; and grinding the gel, calcining for 4-12 hours at 750-1000 DEG C in the presence of air atmosphere, cooling to 500-700 DEG C, keeping the temperature for 4-10 hours, and annealing, thereby obtaining a strontium-ferrite-molybdenum wrapped nickel lithium manganate composite material. By adopting the method, the surface of the nickel lithium manganate material is effectively wrapped by strontium-ferrite-molybdenum, the initial Coulomb efficiency of the lithium-ion battery is improved, and the circulation and rate capability of the lithium-ion battery can be improved. Meanwhile, due to the wrapped layer, dissolution of manganese can be inhibited, so that side reaction of an anode material in high voltage can be reduced, and the structural stability of an electrode material can be protected.

The invention discloses a continuous vibration attenuation and isolation structure for a railway. A filling groove serves as the major structure of the continuous vibration attenuation and isolation structure for railway, hollow cylinders which are arranged continuously and densely are arranged in the filling groove, and the space between the outer walls of the hollow cylinders and the inner wall of the filling groove is filled with a filling body. Each hollow cylinder is a double-wall corrugated pipe. EPS particle cement and soil mixing packing materials serve as the filling body. According to the continuous vibration attenuation and isolation structure for the railway, the stability of the vibration attenuation and isolation structure is guaranteed, and the design depth of the vibration isolation structure can be increased easily. Due to the fact that the light EPS particle cement and soil mixing packing materials serve as the filling body, on one hand, the stability of the double-wall corrugated pipe is guaranteed; on the other hand, the wave drag impedance ratio among different media is increased, and the vibration isolation effect is improved on the other hand.

The invention provides an anode material, an anode and a lithium ion battery, and relates to the technical field of lithium ion batteries. The anode material includes the following components in weight percentage: 59-90% of anode active materials, 9.5-40% of lithium and manganese enriched solid solution materials, 0.1-10% of a conductive agent and 0.1-10% of an anode binder. Through adopting the anode material, the technical problems in the prior art that the preparation technology is complicated, the condition is strict, the cost is high and the effective control to the lithium supplement amount is difficult in reality as lithium powder or lithium sheets is adopted as a lithium supplement material in the silica-based cathode lithium ion battery are alleviated, so that the technical effects that preparation technology is simplified, and the lithium supplement cost is reduced are reached.

A lightning protection system for a tower of a wind turbine is provided. The tower includes a reinforced concrete tower wall in which a plurality of electrically conductive structural reinforcing elements are embedded during construction. The lightning protection system includes a plurality of the structural reinforcing elements connected in an electrically conductive manner with each other and with a ground terminal. Further, a method of incorporating such a lightning protection system in a reinforced concrete tower, and a wind turbine with such a lightning protection system is provided.

The invention discloses a method for coating lithium nickel manganese oxide with a composite, and belongs to the technical field of battery material modification and preparation. The method includes the steps that a lithium nickel manganese oxide precursor is prepared through a coprecipitation method and prepared into suspension, bismuth oxide and yttrium oxide in a certain proportion are added into the suspension, ball milling dispersion and drying are carried out, the dried material is subjected to roasting and annealing treatment in an air atmosphere, and the lithium nickel manganese oxide positive electrode material coated with the (Bi2O3)0.75(Y2O3)0.25 composite is obtained. The material prepared with the method is pure in phase and good in crystallinity, and industrial production of the material is easy; the surface of the lithium nickel manganese oxide material can be effectively coated with the (Bi2O3)0.75(Y2O3)0.25 composite to improve the cycle performance and rate capability of lithium-ion batteries; meanwhile, the coating layer can inhibit dissolution of manganese, reduce side reactions of the positive electrode material under high voltage and protect the structure and heat stability of the electrode material.

The invention, which relates to the scientific field of nano composite materials, aims at providing a preparation method of a nickel-cobalt-phosphorus-carbon-nickel hydroxide ternary composite electrode material. The method comprises the following steps: growing a nickel-cobalt sheet wire nano-array substrate on the surface of foamed nickel by using nickel nitrate hexahydrate, cobalt nitrate hexahydrate, ammonium fluoride and urea, carrying out immersion in a glucose solution and heat treatment in an argon atmosphere, and then carrying out reaction with sodium hypophosphite to obtain a nickel-cobalt-phosphorus-carbon nano array; and then making a reaction with nickel chloride hexahydrate and urea; to be specific, enabling the nickel chloride hexahydrate reacts with the urea to obtain foamed nickel loaded with a nickel-cobalt-phosphorus-carbon-nickel hydroxide nano-array. The preparation method has advantages of simple process and strong operability; the nanor array can grows directly on the foamed nickel substrate; and the prepared electrode can be used as the electrode of a super capacitor directly, so that the super capacitor has the broad application prospects. Therefore, the cycle performance, overall specific capacitance and energy density of the electrode material can be improved; and the thus the electrode has the higher energy density and excellent cycle performance.

The invention provides electrolyte solution containing low-concentration lithium salt and a lithium secondary battery containing the electrolyte solution. The electrolyte contains lithium salt (I), lithium salt (II) and a solvent, wherein the lithium salt (I) is selected from one of lithium bis(oxalato)borate, lithium tetrafluoxalato phosphate, 2-trifluoromethyl-4,5-dicyanoimidazole lithium, lithium difluorooxalatoborate, lithium chlorotrifluoroborate, and lithium trioxalatoborate or more; the lithium salt (II) is selected from one of lithium hexafluorophosphate, lithium hexafluoroarsenate, lithium tetrafluoroborate, lithium perchlorate, LiCF3SO3 and LiN (CxF2x + 1SO2) (CyF2y + 1SO2) or more, wherein x and y are each independently an integer of 0-5, and the total concentration of the lithium salt (I) and the lithium salt (II) is 0.3-0.6 mol / L.

The invention discloses a procyanidine microcapsule. The procyanidine microcapsule is prepared from 0.1 to 5% of procyanidine, 1 to 30% of a lipophilic emulsifier, 1 to 10% of chitosan, 1 to 10% of glacial acetic acid, 1 to 30% of water, 0.005 to 0. 1% of glutaraldehyde and the balance of liquid fat all in percent concentration by mass. The invention further provides a preparation method of the procyanidine microcapsule, comprising the following steps: heating and dissolving procyanidine, chitosan and glacial acetic acid in water to obtain an aqueous-phase component; carrying out hybrid heating on the lipophilic emulsifier and liquid fat and uniformly dispersing to obtain an oil-phase component; slowly adding the aqueous-phase component to the oil-phase component while stirring to obtain uniform emulsion; adding glutaraldehyde to the emulsion to be solidified, then successively carrying out centrifugation and washing with ethanol and petroleum ether, dispersing and air-drying acetone to obtain the procyanidine microcapsule. According to the procyanidine microcapsule disclosed by the invention, procyanidine can be separated from the external environment to effectively avoid strong destructive effects on procyanidine caused by external environment of straight sunshine and the like.

The invention discloses a multifunctional binder for a lithium-sulfur battery positive electrode and a preparation method of the multifunctional binder. The multifunctional binder is mainly prepared from the following raw materials in parts by weight of 50-99 parts of polyacrylic acid; 0 to 30 parts of polyrotaxane; 1 to 30 parts of cationic polyrotaxane; 0.01 to 1 part of a cross-linking agent, the cross-linking agent contains at least two reaction groups, at least one reaction group reacts with the carboxyl of the polyacrylic acid, and at least one reaction group reacts with hydroxyl of cyclodextrin in the polyrotaxane and the cationic polyrotaxane. The multifunctional adhesive disclosed by the invention shows the excellent mechanical strength and elasticity, can effectively protect thestructure stability of a sulfur positive electrode, can efficiently absorb the polysulfide in the lithium-sulfur battery so as to inhibit the shuttle effect caused by the polysulfide, can effectivelyimprove the cycle specific capacity and the cycle stability of the lithium-sulfur battery, and is green and environment friendly, and has the very good application value.

The invention provides a preparation method of a silicon dioxide aerogel / hollow glass bead compound. The invention further provides a light composite rubber, which is prepared from a main antioxidant,a plasticizer, raw silicone rubber, a flame retardant, a lubricant, an auxiliary antioxidant, a vulcanizing agent and the silicon dioxide aerogel / hollow glass bead compound. The invention further provides a preparation method of the light composite rubber. The provided light composite rubber has the characteristics of light weight, high strength, flame retardance, environment friendliness, excellent heat insulation performance and the like.

A vitamin C microcapsule is prepared from components in percentage concentration by mass as follows: 0.1%-5% of vitamin C, 1%-30% of a lipophilic emulsifier, 1%-10% of chitosan, 1%-10% of glacial acetic acid, 1%-30% of water, 0.005%-0.1% of glutaraldehyde and the balance of liquid fat. The invention further provides a preparation method of the microcapsule. The preparation method comprises steps as follows: the vitamin C, chitosan and glacial acetic acid are heated and dissolved in water, and an aqueous phase component is prepared; the lipophilic emulsifier and liquid fat are mixed, heated anddispersed uniformly, and an oil phase component is prepared; the aqueous phase component is added to the oil phase component during stirring, and emulsion is prepared; glutaraldehyde is added to theemulsion and cured, a mixture is sequentially centrifuged, washed with ethanol and petroleum ether dispersed with acetone and air-dried, and the vitamin C microcapsule is obtained. The vitamin C microcapsule has high degree of sphericity and good biocompatibility, safety and slow-release effect and effectively prevents the vitamin C from oxidative deterioration under the influence of external environment.

A reduction gearbox transmission separation mechanism includes a box. A first shaft and a second shaft are disposed in the box. The first shaft is sleeved with a linkage gear, a rotating block, a moving block, and a fixed block. The linkage gear is used for linking the first shaft and the second shaft. The linkage gear is a transmission part in a gear transmission assembly or a worm wheel and worm transmission assembly or a gear worm transmission assembly. The first shaft includes a linkage segment and a fitting segment. The linkage gear is rotatably sleeved on the fitting segment. The moving block is disposed on the linkage segment, and the moving block is axially movable along the linkage segment.

The invention relates to a water-soluble glabridin microcapsule which is prepared from the following materials in mass percent concentration: 0.1 to 5% of water-soluble glabridin, 1 to 30% of lipophilic emulsifier, 1 to 10% of chitosan, 1 to 10% of glacial acetic acid, 1 to 30% of water, 0.005 to 0.1% of glutaric dialdehyde and the balance of liquid-state grease. The invention further provides a preparation method of the microcapsule. The preparation method comprises the steps of heating and dissolving the water-soluble glabridin, the chitosan and the glacial acetic acid into the water to obtain a water-phase component; mixing, heating and evenly scattering the lipophilic emulsifier and the liquid-state grease to obtain an oil-phase component; adding the water-phase component into the oil-phase component in stirring to obtain lactescence; adding the glutaric dialdehyde into the lactescence for curing, and sequentially performing centrifuging, washing with ethanol and petroleum ether, acetone scattering and air drying to obtain the water-soluble glabridin microcapsule. The water-soluble glabridin microcapsule of the invention has the advantages of good biocompatibility, good safety and a good slow-release effect, thus improving absorption and permeation on skin.

The invention relates to a comprehensive evaluation method of the health condition of an ancient architecture channel drainage system and belongs to the ancient pipeline assessment field. According to the method, channel data including channel CAD drawings, as well as photographs and images taken by robots are collected through using modern pipeline detection technologies before ancient architecture channel defect assessment is performed, and therefore, the basic information, such as the structures and sizes of the pipelines can be systematically, comprehensively and authentically mastered; ancient architecture channel defects are classified systematically, namely, the ancient architecture channel defects are classified into structural defects and functional defects, and the various defects are defined and described in detail, and the degrees of the channel defects are graded, and defect levels are determined, and complete assessment is performed on the ancient architecture channel defects. With the method adopted, references can be provided for the defect assessment of the ancient architecture channel drainage system.

The invention discloses a long-life lithium ion battery ternary positive electrode material, which comprises a ternary material as a substrate and a polymer coating layer coating the surface of the ternary material, wherein the polymer comprises a polycarboxylate polymer compound with a structure. The invention also provides a preparation method and application of the long-life lithium ion batteryternary positive electrode material. The long-life lithium ion battery ternary positive electrode material has good mechanical properties and excellent capacitance characteristics, is cheap, and is simple to prepare, and can be popularized as a commercial capacitor material.

The invention discloses a belt guide device for a pipeline winding machine. The belt guide device comprises a first supporting structure and a second supporting structure. A moving guide wheel mechanism is fixed to the first supporting structure, a swing guide roller mechanism is fixed to the second supporting structure, and then the pitch of an enhancement belt wound around a pipeline is adjusted. The swing guide roller mechanism comprises a first guide roller, a second guide roller and a fine adjustment guide roller mechanism. The first supporting structure and the second supporting structure are connected through a telescopic mechanism. One end of the first supporting structure and one end of the second supporting structure are rotationally connected, and connection through a hinge seat is adopted as the rotational connection manner. By means of the moving guide wheel mechanism, the swing guide roller mechanism and the fine adjustment guide roller mechanism, the structural stability of the enhancement belt is protected; the amplitude of swing of the swing guide roller mechanism is adjusted, and then the pitch of the enhancement belt wound around the pipeline is adjusted; and the belt guide device is suitable for pipelines of different specification diameters, the structural flexibility of the belt guide device is improved, and the application range of the belt guide device is widened.

The invention discloses a lithium ion secondary battery positive electrode material and a preparation method thereof. Doping of a lithium secondary battery positive electrode active substance is carried out by virtue of the synergistic effect among specific elements so as to realize simultaneous protection for a lithium-oxygen layer and a transitional metal-oxygen layer in a lithium cobalt oxide layered structure. By virtue of the optimal design of a secondary sintering technology, gradient doping or wrapping of the specific elements can be realized, so that the structural stability of large-particle lithium cobalt oxide of the material in a circulating process, particularly under a high-voltage condition, is better protected, and more excellent electrochemical performance is obtained; therefore, the lithium ion secondary battery positive electrode material can simultaneously meet the requirements on a high-discharge-voltage platform, high capacity and good circulating performance.

A lightning protection system for a tower of a wind turbine is provided. The tower includes a reinforced concrete tower wall in which a plurality of electrically conductive structural reinforcing elements are embedded during construction. The lightning protection system includes a plurality of the structural reinforcing elements connected in an electrically conductive manner with each other and with a ground terminal. Further, a method of incorporating such a lightning protection system in a reinforced concrete tower, and a wind turbine with such a lightning protection system is provided.

The invention relates to the field of medicines, in particular to a resveratrol particle and a preparation method thereof. The preparation method comprises the following steps: dissolving a carrier inwater to obtain a carrier aqueous solution, wherein the carrier is one or more of hydroxypropyl-beta-cyclodextrin, hydroxypropyl-gamma-cyclodextrin, chitosan or isolated whey protein; dissolving resveratrol in the carrier aqueous solution, and oscillating to prepare a precursor solution; and filtering the precursor solution, and preparing the resveratrol particle by adopting a microfluidic sprayprocess, wherein the microfluidic spray process is a microfluidic spray drying technology or a microfluidic spray freeze drying technology. The resveratrol particle with uniform size, uniform performance and regular morphology is prepared by adopting a laboratory-grade microfluidic spray process, and has the advantages of high release amount and strong oxidation resistance, and meanwhile, the technical problem that the resveratrol is easily interfered by factors such as light, heat and oxygen to lose bioactivity is solved.

The invention relates to the technical field of organosilicon modified materials and provides a preparation method of a silane-modified graphene oxide (GO) flame-retardant film composite in order to solve the problem that gases released in a combustion process of modified GO result in certain environmental pollution although elements such as nitrogen and phosphorus in the modified GO have an obvious flame-retardant effect. The preparation method comprises the steps: adding a silane coupling agent into a GO water solution, carrying out uniform stirring, and carrying out a reaction under a 70-100 DEG C airtight condition for 8-24h to prepare organosilicon functionalized GO hydrogel; and then, placing the hydrogel into a 30-60 DEG C drying oven for drying at an air atmosphere for 12-36h to prepare an organosilicon functionalized GO film composite. The introduced silane coupling agent is capable of realizing surface modification of a graphene oxide sheet layer and effectively inhibiting the thermal degradation of a flame to GO, so that a graphene film material with a stable structure after combustion is obtained.

The invention discloses a liquid-cooled cable which comprises a sheath tube, at least one positive wire core, at least one negative wire core, a first liquid-cooled tube and a second liquid-cooled tube, wherein the positive wire core and the negative wire core are arranged in the sheath tube; the first liquid-cooled tube and the second liquid-cooled tube are arranged side by side; the positive wire core comprises a positive conductor and a positive insulating layer, and the positive insulating layer is arranged outside the positive conductor in a wrapping manner; the negative wire core comprises a negative conductor and a negative insulating layer; and the negative insulating layer is arranged outside the negative conductor in a wrapping manner. The outer wall of the positive electrode insulating layer and / or the outer wall of the negative electrode insulating layer is coated with a heat-conducting aluminum foil; according to the liquid-cooled cable structure, the heat dissipation problem of the cable is well solved, the structure is simple, and the practicability is high.

The invention provides an underwater equipment protection cover plate supporting structure, and is used for providing support for a cover plate for providing protection for underwater equipment. The structure mainly comprises an upper structure and a base, the stability of the protective cover plate is enhanced by pushing the upper structure to move upwards through the dead weight of the protective cover plate, and the structure has the advantages that centering is convenient, and manual operation is not needed.

The invention discloses a band guide device of an enhancing band winding machine. The band guide device comprises four guide rail bases distributed in a rectangular shape. A fixing frame is installedon the four guide rail bases. The fixing frame is provided with an inclined first electric push rod and a horizontally-arranged second electric push rod. One end of the fixing frame is rotationally connected with a turnover support, and the turnover support is provided with a line coil. By means of structural design of a sliding mechanism and a turnover mechanism, the device can be applicable to pipelines with different specifications of diameters, the structure flexibility of the band guide device is improved, the application range of the band guide device is widened, structural stability ofan enhancing band is protected, damage is avoided, and the device has the good economic value and application prospect.

The invention discloses a colored easy open end printing and coating process. The process comprises the following steps that a base material is provided, and the base material is sheared to obtain a base material sheet; patterns are printed on the front surface and / or the back surface of the base material sheet; the front surface of the base material sheet is coated with a base coating layer containing colors; a transparent surface coating layer is coated on the base coating layer; the back surface of the base material sheet is coated with a color-containing base coating layer; a transparent surface coating layer on the base coating layer; and the base material sheet is stamped to form a base end. According to the printing and coating process, after the color-containing base coating layeris coated on the surface of the easy open end base material sheet, the transparent surface coating layer is coated on the base coating layer, the surface coating layer provides a protective film for the base coating layer, the stretch resistance and the adhesiveness of the base coating layer are enhanced, the patterns on the surface of the easy open end and the structural stability of the base coating layer are protected, the defects of paint falling, pattern scraping and the like of the patterns and the colored coating layer on the surface of the easy open end are reduced, the corrosion resistance and the scraping resistance of the easy open end are enhanced, and the quality requirement of the colored easy open end is met.

The orthopedic shoe comprises a vamp, an orthopedic insole and a shoe sole, and is characterized in that a reinforcing supporting structure is arranged on the inner edge of the foot arch of the inner side of the shoe sole, a door-shaped reinforcing support is arranged on the foot arch of the outer side of the shoe sole, and the door-shaped reinforcing support is arranged on the inner edge of the foot arch of the outer side of the shoe sole. The starting point of the door-shaped reinforcing support is the fifth metatarsal bone on the outer side of the foot, the stopping point of the door-shaped reinforcing support is the most protruding position on the outer side of the heel bone, and the reinforcing support structure, the door-shaped reinforcing support and the shoe sole are of an integrally-formed structure. The reinforcing support structure of the orthopedic shoe, the door-shaped reinforcing support and the sole below the door-shaped reinforcing support form three force bearing points, and under the condition that the force bearing direction of one point is opposite to the force bearing directions of the other two points, the force bearing direction of the door-shaped reinforcing support is adjusted according to the acting force, the counter-acting force, the force decomposition law and the lever balance principle. The foot correcting effect is generated through the interaction of the three-point force principle, posture balance is achieved in biomechanics, and the foot massager is convenient to wear, does not affect daily activities and even can participate in physical exercises.