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33results about How to "Good material performance" patented technology

Method for preparing lithium nickel cobalt aluminum oxides serving as lithium ion battery positive electrode material

The invention relates to a method for preparing lithium nickel cobalt aluminum oxides serving as a high-capacity lithium ion battery positive electrode material, which comprises the following steps of: performing preoxidation roasting on nickel cobalt composite hydroxides or nickel cobalt composite carbonates by taking spherical nickel cobalt aluminum composite hydroxides or spherical nickel cobalt aluminum composite carbonates prepared by a coprecipitation method as a raw material to obtain uniform solid solution of high-valence state spherical nickel cobalt oxides in advance, so that all element are mixed in a molecular level; and mixing the preoxidized high-valence state nickel cobalt oxides and lithium salt uniformly, roasting at a high temperature under the atmosphere of oxygen, and cooling and crushing to obtain the lithium nickel cobalt aluminum oxide positive electrode material with a spherical structure. The prepared lithium nickel cobalt aluminum oxide positive electrode material has uniform granular distribution, discharging specific capacity of more than 185 mAh / g(4.3V vs Li), high circulating performance, a simple preparation process and low cost.
Owner:GUOGUANG ELECTRIC +2

Lithium ion battery cathode material with variable slope concentration gradient doping structure and preparation thereof

InactiveCN108649205AThe rate of change of concentration increasesGood element doping distributionElectrode thermal treatmentSecondary cellsSurface layerSynthesis methods
The invention discloses a lithium ion battery cathode material with a variable slope concentration gradient doping structure and a synthesis method thereof. For solving the problems of capacity fadingand rate performance degradation which are brought by the conventional doping method, an element with a variable slope concentration gradient structure is doped, thereby obtaining the lithium ion battery cathode material with the concentration of a doping element continuously changed from the center of a material particle to the surface of the material particle; and change rate is gradually increased from inside to outside, so that the concentration of the doped element inside the material is slowly changed, the concentration of the doped element on the surface of the material is rapidly changed, and change of the concentration of the doped element is mainly concentrated on a surface layer. The method improves stability of the internal structure and the surface of the material while sideeffect is not introduced, the problems such as phase change of the material, volume change and dissolution of transition metal elements in a charge-discharge cycle process are reduced, cycle life of the material is greatly prolonged, and safety performance of the material is greatly improved.
Owner:HARBIN INST OF TECH

Multilayer negative-pressure closed drainage wound protecting device

The invention provides a multilayer negative-pressure closed drainage wound protecting device which comprises a porous foam cushion, a drainage tube and an oxygen-containing liquid flushing tube. One end of the drainage tube is positioned in the porous foam cushion, the porous foam cushion is a multilayer composite foam cushion and comprises a negative pressure conducting layer and a drainage protecting layer, the negative pressure conducting layer is a hydrophobic porous foam material layer, the drainage protecting layer is a hydrophilic porous foam material layer, and the drainage tube is disposed in the negative pressure conducting layer; the oxygen-containing flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube penetrates the porous foam material layer to be positioned on the lower surface of the drainage protecting layer, the tail end of the drainage tube goes deeply into the drainage protecting layer for positioning, and small holes are distributed in the wall of the drainage tube. The drainage tube and a leading-in end of the oxygen-containing liquid flushing tube are fixed by a shared elastic sealing glue film floppy which comprises a disc and an elastic sealing glue film bonded with the disc and extending outwards, and a drainage leading-in tube orifice of the drainage tube and a flushing leading-in tube orifice of the oxygen-containing liquid flushing tube are arranged in the middle of the disc. A longitudinal breaking joint is formed at a drainage tube incoming end of the porous foam cushion, so that convenience is brought to overturning of the leading-in tube orifice.
Owner:WUHAN VSD MEDICAL SCI & TECH CO LTD

Konjac glucomannan membrane haze-prevention mask

The invention relates to a konjac glucomannan membrane haze-prevention mask. A mask body of the konjac glucomannan membrane haze-prevention mask is composed of four layers which specifically include the first layer, namely, the outmost layer, made of non-woven fabric, the second layer made of a konjac glucomannan porous membrane, the third layer made of a konjac glucomannan nanometer porous membrane, and the fourth layer, namely, the layer in contact with the face, made of non-woven fabric. With natural polymer polysaccharide, namely, konjac glucomannan, serving as the main ingredient, the konjac glucomannan membrane haze-prevention mask has various characteristics of hydrophilia, the thickening characteristic, stability and the like. In recent years, natural polymer compounds are widely applied to the material field, and many problem emerging on material safety are solved. The technology of preparing high-quality nanometer porous membranes with plant polysaccharide serving as the raw materials become a hot point in recent years; according to the method, the special gel property of konjac glucomannan is utilized, and the konjac glucomannan nanometer porous membrane is obtained through application of the electric field technology, and has great application potential in the material field. The konjac glucomannan membrane haze-prevention mask has higher indexes such adsorption performance, safety, raw material price and potential markets than those of other masks on the market, and can be selected by mass consumers as high-quality haze-prevention masks.
Owner:上海盈兹无纺布有限公司

Nickel iron slag based polymer binding material and preparation method thereof

The invention discloses a nickel iron slag based polymer binding material and a preparation method thereof. The nickel iron slag based polymer binding material is prepared from the following components in parts by weight: 55-75 parts of nickel iron slag, 3-20 parts of flue gas desulfurization gypsum, 0.5-8 parts of slag Portland cement and 10-30 parts of pulverized fuel ash. The nickel iron slag based polymer binding material has high nickel iron slag dosage, enables nickel iron slag waste to be sufficiently utilized, and has good material performance and wide application range.
Owner:JIANGSU PROVINCE METALLURGICAL DESIGN INST

Method for processing container with deep wall

The invention relates to a processing method of a deep wall container, the method comprises the following steps: a die assembly is arranged and clamped on an injection mold machine, to lead the sprue mouth of the injection mold machine to being oppositely connected with the feeding hole of the die assembly, and to form a closed fluid channel; a solid granular or powder raw material is warmed up to a molten status, under the rotating and extruding function of a threaded rod, the raw material is pressed into the feeding hole of the die assembly through the sprue mouth; the raw material enters and fills up a cavity through the fluid channel; a product is formed through dwelling, cooling and solidifying, and then the product is taken out by opening the fluid channel. The invention is characterized in that the raw material is HDPE material with melt index less than 2.0g / 10 min; at least two feed points are arranged on the mouth edge of the container of the fluid channel, and a feeding hole is arranged on the inner wall bottom face of the container. The invention can lead the material with melt index less than 2.0g / 10 min which can not be used for injection mold and processing to be used for processing a plastic product, and enable the material performance to be good, the service life to being long, the mouth edge strength to be high, the impact strength to be high, and the sealing property to be good.
Owner:NANJING HONGJU PLASTIC STEEL PRODS

Method for preparing capacitor electrode material non-stoichiometric lanthanum manganate

The invention discloses a method for preparing a capacitor electrode material non-stoichiometric lanthanum manganate (LaMnx+ / -1O3). The method comprises the following steps: mixing nitrate of manganese and lanthanum according to a certain ratio, and stirring to obtain sol; drying to obtain dried gel; and finally, performing calcination treatment, thereby obtaining the non-stoichiometric LaMnx+ / -1O3. The product disclosed by the invention is of a porous structure and has a large specific surface area, and energy density is improved; and the LaMnx+ / -1O3 has relatively high oxygen vacancy concentration, and the transport speed of ions and electrons is improved, so that the power density is enhanced. Compared with stoichiometric lanthanum manganate (LaMnO3), the LaMnx+ / -1O3 has high capacity and cycling stability when serving as a super-capacitor electrode material. When the scanning rate is 0.5A / g, the specific capacitance of LaMn1.1O3 is 508F / g. When the current density is 3A / g, the capacity is kept at 75% due to 1000-time cycle, and the specific capacitance is finally stabilized at about 250F / g.
Owner:SOUTHEAST UNIV

Preparation method of Mg-doped lithium nickel cobalt aluminum oxide positive electrode material

The invention relates to a preparation method of a Mg-doped lithium nickel cobalt aluminum oxide positive electrode material. The method comprises the following steps: 1, preparing a Mg-doped spherical nickel cobalt aluminum hydroxide precursor through a coprecipitation technology; and 2, individually carrying out preoxidation calcining treatment on the Mg-doped spherical nickel cobalt aluminum hydroxide precursor to obtain a high-valence spherical Mg-doped nickel cobalt aluminum oxide uniform solid solution, mixing the a high-valence Mg-doped nickel cobalt aluminum oxide with a lithium source, carrying out high temperature calcination in oxygen atmosphere, cooling the obtained calcination product, and crushing the cooled calcination product to obtain the Mg-doped lithium nickel cobalt aluminum oxide positive electrode material. The lithium nickel cobalt aluminum oxide positive electrode material prepared through the method has the characteristics of high energy density, low cost, simple preparation technology, and easiness in realization of industrialization, and has greatly better battery specific capacity, rate and other cell performances than Mg-free materials.
Owner:河南科隆新能源股份有限公司

Thermoplastic polyurethane and preparation method thereof

The invention discloses thermoplastic polyurethane. The thermoplastic polyurethane is characterized by being prepared from the following components in parts by weight: 60-65 parts of isocyanate, 10-25parts of dihydric alcohol, 10-25 parts of triatomic alcohol, 0.0005 part of a catalyst, 0.5 part of antioxidant and 1 part of an ultraviolet absorbent. According to the thermoplastic polyurethane, the synthesizing method is simple, the preparation cycle is short, the raw materials have low cost and are easily available, the thermoplastic polyurethane can endure deep sea pressure, have corrosion resistance and excellent environmental resistance, and the structure of the material can meet the safety standard of observation windows of deep sea submersible vehicles.
Owner:JIANGSU IRON ANCHOR GLASS LTD BY SHARE LTD

Preparation method of bis-salicylaldehyde o-phenylenediamine modified resin for uranium extraction from salt lake

The invention relates to a preparation method of bis-salicylaldehyde o-phenylenediamine modified resin for uranium extraction from a salt lake. The preparation method comprises the following steps: step I, synthesizing styrene-divinylbenzene copolymer cross-linked microspheres; step II, synthesizing chloromethylation copolymer cross-linked microspheres; step III, performing the functionalized reaction of ethylenediamine of the chloromethylation copolymer cross-linked microspheres; and step IV, synthesizing the bis-salicylaldehyde o-phenylenediamine modified resin. According to the preparationmethod of the chelated resin for the uranium extraction from the salt lake, the bis-salicylaldehyde o-phenylenediamine modified resin for the uranium extraction from the salt lake is successively prepared by utilizing chemical modification reaction, the preparation method is simple, and the material performance is good.
Owner:BEIJING RES INST OF CHEM ENG & METALLURGY

Method for improving high-temperature stability of metal twin crystals

The invention discloses a method for improving high-temperature stability of metal twin crystals. The method comprises the steps that nanoporous metal is prepared firstly through a dealloying method,or an electrochemical method and a template method, then the nanoporous metal is placed in a methane atmosphere, so that the surface of the nanoporous metal is covered with a layer of amorphous carbon, and then a heating reaction is conducted. At the high temperature, the amorphous carbon is catalyzed into graphene, the part of nanoporous metal is molten and evaporated, and thus nano droplets bound by the graphene are generated. The temperature is decreased, the droplets are solidified, the twin crystals are generated in the droplets, and thus the nano metal twin crystals bound by the grapheneare formed. The nanoporous metal comprises nanoporous copper, nanoporous gold, nanoporous silver and nanoporous palladium. A preparation technology is simple, universality is high, the surfaces of the nano metal twin crystals are bound through the graphene, the high-temperature stability of the nano metal twin crystals can be greatly improved, good material performance is kept, and the application range of the metal twin crystals is expected to be expanded.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Synthesis and detection method of novel tertiary amine modified antibacterial pit and fissure sealing agent

The invention belongs to the technical field of oral clinic, and discloses a synthesis and detection method of a novel tertiary amine modified antibacterial pit and fissure sealing agent. According to the method, a pit and fissure sealing agent is prepared, the dosage relation between DMAEM and Clinpro is screened according to the photocuring depth of a modified resin pit and fissure sealing agent material, and the optimal dosage range is screened through experiments; on the basis, a performance detection sample is selected, and a cytotoxicity experiment, surface roughness detection and microhardness detection are performed; the influence of the DMAEM on the material performance and the anti-caries performance of the pit and fissure sealing agent is investigated by taking a plurality of performances such as cytotoxicity, hardness, surface roughness, antibacterial performance and the like as indexes; and a saliva biofilm is cultured in vitro, the modified resin sealing agent is subjected to biological aging, antibiosis before and after biological aging is detected, and the micro-leakage condition of the pit and fissure sealing agent subjected to biological aging is detected. According to the invention, the sealing agent has a long-acting and sustainable antibacterial effect, and overcomes the defects of the existing pit and fissure sealing agent.
Owner:SICHUAN UNIV

High temperature-resistant ethylene-acrylate rubber formula

The invention discloses a high temperature-resistant ethylene-acrylate rubber formula. The formula comprises the following raw materials in parts by weight: 0-70 parts of VAMAC IP, 0-30 parts of VAMAC GXF, 30-100 parts of ULTRA LS 3110, 1-2 parts of 18 D, 0.5-2 parts of SA, 1-2 parts of VAM, 1-2 parts of an antioxidant 445, 2-3 parts of WS180, 30-50 parts of carbon black N550, 0-50 parts of silicon powder 750, 0-60 parts of carbon black N990, 5-10 parts of TP759, 1.2-1.8 parts of DK-1, 0-1 part of DPG, and 0-2 parts of ACT55. By employing the above technical scheme, the formula has the beneficial effect that the high temperature-resistant rubber formula has good material performance, tensile strength is greater than 10.0 MPa, and the elongation at break is greater than 200%. The technical operation such as rubber compound injection and extrusion is stable, and the requirement for high temperature resistance condition of the rubber material by the product can be satisfied.
Owner:SHANDONG MEICHEN ADVANCED POLYMER MATERIALS TECH CO LTD

Control cable of efficient intrinsic safety detecting instrument

The invention discloses a control cable of an efficient intrinsic safety detecting instrument. The control cable comprises a plurality of conductor insulation units, wherein each conductor insulation unit comprises a conductor, an insulation layer, a subentry shielding layer and a wrapping layer, the insulation layer is extruded on the conductor, the outer side of the insulation layer is sequentially provided with the subentry shielding layer and the wrapping layer, a plurality of drainage wires are arranged between the insulation layer and the subentry shielding layer, a packing layer is arranged between the conductor insulation units, and the outer side of the packing layer is sequentially provided with a wrapping tape layer, a shielding layer and an outer sheath layer. The material of the insulation layers of the control cable has excellent performance and also has characteristics of low smoke, no toxicity, no halogen and flame retardance; meanwhile, the tensile strength of the material is high, therefore, the material also has excellent anti-electromagnetic interference performance when the material bears mechanical external force; in addition, the material is suitable for the insulation layers of various wires and cables. Moreover, the control cable has excellent flame retarding performance and intrinsic safety performance.
Owner:YANGZHOU SHUGUANG CABLE

Automobile blind zone sensing system

The invention provides an automobile blind zone sensing system. The automobile blind zone sensing system acquires running relevant element information of motion status information, first running environment information, second running environment information, visibility value and the like of an automobile respectively through an automobile motion status detection module, a first running environment detection module, a second running environment detection module and a weather environment detection module, confirms running blind zone distribution status of the automobile under current running status according to the running relevant element information, and can further perform real-time dynamic prompting for a driver according to the running blind zone distribution status, thereby guaranteeing that the driver can comprehensively master running view in the running process and improving running safety of the automobile.
Owner:成都长迪传感技术有限公司

Contraction-expansion nozzle, manufacturing method thereof, additive manufacturing equipment and method

The invention discloses a shrinkage-expansion nozzle and a preparation method thereof and additive manufacturing equipment and method.The preparation method of the shrinkage-expansion nozzle comprises the steps that the required shrinkage-expansion nozzle is manufactured on a rotating shaft base body in an additive mode through a cold spraying method, and the pressure adopted for cold spraying ranges from 2 MPa to 5 MPa; and removing the rotating shaft substrate by adopting a physical method or a chemical method. The shrinkage-expansion nozzle with the complex inner wall shape is manufactured on the surface of the rotating shaft base body in a cold spraying mode, then the rotating shaft base body is removed, the whole process is simple, the shrinkage-expansion nozzle with the compact structure can be generated under the action of large pressure through additive manufacturing on the surface of the rotating shaft base body, and the shrinkage-expansion nozzle with the compact structure is formed. The material is good in performance, and the strength, hardness, corrosion resistance and the like are improved.
Owner:GUANGDONG INST OF NEW MATERIALS

Mounting structure of outer wall rock wool heat preservation integrated plate of high-rise housing and construction method

InactiveCN111395682AGuaranteed vertical levelingUnable to levelCovering/liningsBuilding material handlingMechanical engineeringAluminium alloy
The invention discloses a mounting structure of an outer wall rock wool heat preservation integrated plate of a high-rise housing and a construction method. The rock wool heat preservation integratedplate is embedded in an aluminum alloy grating and bonded on a mounting wall, the aluminum alloy grating is composed of multiple aluminum alloy square tubes horizontally fixed to the mounting wall andparallel to each other, the position, between two adjacent aluminum alloy square tubes, of the rock wool heat preservation integrated plate is supported by the aluminum alloy square tube on the lower portion, the construction method comprises the steps of aluminum alloy grating detailed design, straight hanging, line snapping, rear embedded part mounting, aluminum alloy square tube mounting, pointing, mounting wall treatment, rock wool heat preservation integrated plate deepened figure making, wall payoff, rock wool heat preservation integrated plate cutting and anchorage part mounting, bonding mortar preparing, rock wool heat preservation integrated plate bonding, gluing, and protection film removing. Through the aluminum alloy grating, the mounting wall is divided, vertical flatness ofthe rock wool heat preservation integrated plate is ensured conveniently, the rock wool heat preservation integrated plate is embedded in the aluminum alloy grating, and a safety quality accident ofintegrated plate whole falling is avoided.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD

High-and-low-temperature-resistant wire harness sheathing material of new energy automobile and preparation method of high-and-low-temperature-resistant wire harness sheathing material

The invention relates to the field of wire harness sheathing materials, and particularly discloses a high-and-low-temperature-resistant wire harness sheathing material of a new energy automobile. Thehigh-and-low-temperature-resistant wire harness sheathing material of the new energy automobile comprises the following components: 30-45 parts of thermosetting liquid polyimide pure resin, 20-35 parts of EVA resin, 10-15 parts of polytetrafluoroethylene, 4-6 parts of a temperature-resistant compound modifying agent, 6-10 parts of ultra-fine activated calcium carbonate, 3-5 parts of diisononyl phthalate, 2-4 parts of a lubricating agent and 0.5-0.9 part of an antioxidant. The thermosetting liquid polyimide pure resin, the EVA resin and the like are used as matrixes, the matrixes have properties of weather resistance, temperature resistance, wear resistance, corrosion resistance and the like, and then are compounded with the temperature-resistant compound modifying agent and the like, and thus, the properties (such as wear resistance, impact resistance, weather resistance, temperature resistance and corrosion resistance) of the prepared material are excellent.
Owner:WUHU EXCELLENCE WIRE HARNESS SYST

Energy dissipation and shock absorption type fabricated beam-column joint

A prefabricated column and a prefabricated beam are connected, and a friction energy dissipation assembly is arranged between the prefabricated column and the prefabricated beam; the friction energy dissipation assembly comprises a gear arm and a gear composite part, the gear composite part is installed on at least one of the prefabricated column and the prefabricated beam, the gear composite part is meshed with a rack, and the rack is arranged on the gear arm; a limiting groove is formed in the gear arm, and a limiting bolt pin with a fixed position is arranged in the limiting groove; the metal energy dissipation assembly achieves energy dissipation through beam-column joint deformation and metal energy dissipation sheet extrusion, the composite energy dissipation benefit of combining friction energy dissipation and metal energy dissipation can be achieved, earthquake energy is dissipated, a component is protected against damage, and the composite energy dissipation performance can be recovered after an earthquake. And the self-resetting capability can be realized by applying pre-stress by combining a pre-stress assembly, and the earthquake isolation effect can be achieved through the rubber shock isolation pad.
Owner:QINGDAO TENGYUAN DESIGN ACCOUNTANTS CO LTD
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