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44results about How to "Act as a physical barrier" patented technology
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Lithium-sulfur battery membrane and lithium-sulfur battery with same
ActiveCN106784554AInhibition of Stability EffectsAvoid stabilityMaterial nanotechnologyLi-accumulatorsHeterojunctionLithium–sulfur battery
The invention belongs to the technical field of lithium-sulfur batteries, and relates to a membrane and for a lithium-sulfur battery. The membrane comprises a membrane body and a covering layer, the covering layer comprises graphene and heterojunction nano materials, the heterojunction nano materials are a symbiotic high adsorption phase-high conductivity phase, the mass ratio of the graphene to the heterojunction nano materials is (3-15):1, and the mass ratio of the high adsorption phase to the high conductivity phase is (1-10): (10-1). Relative to the prior art, according to the membrane, the covering layer is arranged on the membrane, electrochemistry and dynamics performances of the lithium-sulfur battery can be greatly improved, heterojunction nano materials specifically comprise the high adsorption phase and the high conductivity phase, the high adsorption phase has high adsorption action on polysulfide, the high conductivity phase has high conductivity action on the polysulfide, the polysulfide adsorbed by the high adsorption phase can be diffused on the surface of the high conductivity phase, so that transformation of the polysulfide is finished, adsorption and transformation at an interface between the high adsorption phase and the high conductivity phase can be finished, and the 'shuttling effect' of the polysulfide is restrained.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Preparation method of microencapsulated gradient halogen-free flame retardant system
InactiveCN102516603AEvenly dispersedLiquidMicroballoon preparationMicrocapsule preparationPolymer scienceMoisture
The invention relates to a preparation method of a microencapsulated gradient halogen-free flame retardant system. The preparation method comprises the steps of: mixing a phosphorus-series flame retardant with an inorganic flame retardant according to a certain ratio to obtain a microencapsulated halogen-free flame retardant, then carrying out surface modification on a charring agent, and then mixing the microencapsulated halogen-free flame retardant, a phosphorus-containing organic flame retardant and surface-modified charring agent according to a certain ratio to obtain the microencapsulated gradient halogen-free flame retardant system. By using the system, distributed gradient flame retarding is realized, the flame retardancy of a polymer material is greatly improved, the defect that compatibility between the flame retardant and the polymer is poor is solved, the migration of the halogen-free flame retardant from the polymer matrix under high-temperature and moisture conditions is significantly reduced, and the long-term storage of a flame-retardant polymer material is facilitated. The method has the characteristics of simple process, convenience for operation, environmental friendliness, and lower cost. The obtained flame retardant system has good flame retarding effect and wide application field.
Owner:JILIN UNIV
Implant for uteruses
The invention relates to the field of gynecological medical apparatus and instruments, in particularly to an implant for uteruses. The implant for the uteruses comprises a membrane (1). The implant for the uteruses has the advantages that problems of irritation influence on uteruses due to existing implants implanted in uterine cavities for a long time, poor uterine mucous membrane repair effects of conventional medicine, influence on the whole bodies of patients due to hormone medicine for oral administration and the like can be solved by the aid of the medicine to a great extent, and effects and individual degrees can be greatly improved during phased utilization.
Owner:吴江永元生物科技有限公司
Carbon nitride composite material and preparation method and application thereof
InactiveCN107359302AGood physical barrierLarge specific surface areaLi-accumulatorsCell component detailsIsolation effectCarbon composites
The invention relates to a carbon nitride composite material and a preparation method and an application thereof. The carbon nitride composite material comprises a substrate and a composite coating layer for covering the surface of the substrate; the composite coating layer comprises carbon nitride, a conductive agent and a binder; the conductive agent is selected from at least one kind of active carbon, acetylene black, Ketjen black, graphite, graphene and carbon nanotubes. The carbon nitride composite material can be applied to a diaphragm of a lithium-sulfur battery; when a polysulfide exists, the conductive agent can transfer electrons generated in the charge-discharge process, so that an effect of a second current collector as well as an effect of physical isolation can be played; in addition, carbon nitride has relatively high physical isolation effect and large specific surface area; and due to existence of the nitrogen element, shuttling of the polysulfide can be suppressed by the dual chemical and physical absorption effects effectively, thereby enabling the lithium-sulfur battery to be relatively high in discharge specific capacity and cycling stability.
Owner:DONGGUAN UNIV OF TECH
Graphene modified waterborne epoxy resin coating material as well as preparation method and application thereof
InactiveCN108531045AImprove corrosion resistanceAct as a physical barrierFireproof paintsAntifouling/underwater paintsEpoxyOrganic solvent
The invention discloses a graphene modified waterborne epoxy resin coating material as well as a preparation method and application thereof. The graphene modified waterborne epoxy resin coating material is prepared from a component A' of which the solid content is 53 percent and a component B of which the solid content is 40 percent. The graphene modified waterborne epoxy resin coating material ofwhich the solid content is 33 percent is obtained by mixing the component A' with the component B according to a mass ratio of (1.5 to 4):1, adding deionized water, and uniformly mixing, wherein thecomponent A' is graphene modified waterborne epoxy resin emulsion and is obtained by adding 0.1 to 1 mass percent of graphene derivative in waterborne epoxy resin emulsion. The component A' is stablystored for a long term and has no precipitate after one-year storage. The obtained graphene modified waterborne epoxy resin coating material after the component A is applied is higher in corrosion resistance, conductivity and thermal stability, and the preparation method is safe and environmentally friendly, does not use heavy metal ions and volatile organic solvents and accords with the idea of environment-friendly protection.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
In-situ cleaning and reusing device for black and odorous river sediments, and method thereof
ActiveCN108516658AIncreased redox potentialHarmlessWater/sewage treatment by centrifugal separationSludge treatment by de-watering/drying/thickeningFlocculationWastewater
The invention discloses an in-situ cleaning and reusing device for black and odorous river sediments, and a method thereof. The device comprises a submersible pump, the outlet of the submersible pumpis connected with the inlet of an oxidation reaction tank through a dosing pump, the outlet of the oxidation reaction tank is connected with the inlet of a vibrating screening machine, the coarse particle outlet of the vibrating screening machine is connected with the inlet of a coarse particle collecting tank, the mud outlet of the vibrating screening machine is connected with the inlet of a mudtank, the outlet of the mud tank is connected with the inlet of a cyclone separator through a lifting pump and a valve, the medium particle outlet of the cyclone separator is connected with the inletof a medium particle collection tank, the wastewater outlet of the cyclone separator is connected with the inlet of a flocculation reaction tank, the outlet of the flocculation reaction tank is connected with the inlet of a microfiltration machine, and the device treats areas of a river, formed through division using cofferdams, through water distribution pipelines. The method is characterized inthat reduced pollutants in the sediment are removed through the oxidation effect, the cleaned sediments are screened according to different particle sizes, and are respectively covered in the river channel, and wastewater is treated and reused, so the subsequent treatment and disposal cost of the sediments is reduced.
Owner:TSINGHUA UNIV
Active covering method for in-situ remediation of sediments
InactiveCN103613257AReduce migration rateImprove adsorption capacitySludge treatmentIn situ remediationCalcite
The invention discloses an active covering method for the in-situ remediation of sediments, relates to an active covering method for carrying out in-situ remediation on contaminated sediments, and is designed for solving the technical problem that an existing in-situ covering technology has a poor treatment capacity on combined pollutions due to thick covering. The method comprises the following steps: uniformly scattering pretreated ferrihydrite powder in a water body, so that the pretreated ferrihydrite powder is covered on sediments at the bottom of the water body; uniformly scattering pretreated calcite sand in the water body, so that the calcite sand is covered on the ferrihydrite powder layer; submerging pretreated geotechnical cloth in the bottom of the water body, so that the geotechnical cloth is uniformly covered on the calcite sand layer; uniformly scattering pretreated local river sand in the water body, so that the local river sand is covered on the geotechnical cloth. Ferrihydrite, calcite and local river sand used in the method are all natural materials, easy to obtain, and low in cost; the geotechnical cloth is pollution-free and low in cost, therefore, the method is technically economical and feasible. The invention belongs to the field of in-situ remediation of sediments.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Long glass fiber reinforced flame-retardant ABS composite material and preparation method thereof
InactiveCN112011147AImprove flame retardant performanceImprove mechanical propertiesFiberAluminium hydroxide
The invention discloses a long glass fiber reinforced flame-retardant ABS composite material and a preparation method thereof. The composite material comprises polycarbonate, ABS, a flame retardant material, modified fibers, modified graphene oxide and other components, and the surface of the modified graphene oxide is treated with a silane coupling agent, so that the compatibility of the grapheneoxide and matrix components (polycarbonate and ABS) is improved, the graphene oxide and the matrix components can be uniformly dispersed in a system, the modified fiber is mainly prepared from blackphosphorene, dopamine, absolute ethyl alcohol and pretreated fiber, the pretreated fibers are glass fibers with carbon nanowires growing on the surfaces, and the glass fibers are continuous glass fibers. By utilizing the synergistic effect of the aluminum hydroxide, the magnesium hydroxide, the polysiloxane, the modified graphene oxide and the black phosphorene, the ABS composite material has excellent flame retardance, and is low in smoke, low in toxicity and higher in practicability during combustion.
Owner:瞿雨捷
High-voltage and high-rate type lithium cobalt oxide cathode material and preparation method thereof
InactiveCN105591081AImprove Capacitive PerformanceImproved magnification performanceSecondary cellsPositive electrodesHigh rateCarbonate
The invention discloses a high-voltage and high-rate type lithium cobalt oxide cathode material and a preparation method thereof. The preparation method comprises steps as follows: cobalt oxide and lithium carbonate are taken as precursors, magnesium carbonate is added, and lithium cobalt oxide can be obtained after primary sintering and breaking; an aluminum alkoxide and titanate mixed alcoholic solution is added, secondary sintering is performed after mixing, and lithium cobalt oxide can be obtained. When discharge voltage is up to 4.5 V and the rate is 0.2C (1C=177.5 mAh / g), specific capacity of lithium cobalt oxide prepared with the method is higher than 190 mAh / g, rate performance of 1C / 0.2C is higher than 98%, and 3.6V voltage platform occupancy is higher than 99%; the material has the characteristics of stable structure and smaller specific discharge capacity attenuation in a high-voltage and high-rate charging and discharging process; according to the method, a voltage window, capacity performance and rate performance of the lithium cobalt oxide cathode material are successfully improved, further, the technology is simple, the implementation is convenient, the cost is low, and the prepared high-voltage and high-rate type lithium cobalt oxide cathode material has excellent electrochemical performance.
Owner:ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
Aluminum oxide/titanium oxide heterojunction nano fiber carrier in anti-sintering precious metal catalyst system as well as preparation method and application of carrier
InactiveCN103977779AHigh porosityRough fiber surfaceCatalyst carriersMetal/metal-oxides/metal-hydroxide catalystsHeterojunctionFiber
The invention discloses an aluminum oxide / titanium oxide heterojunction nano fiber carrier in an anti-sintering precious metal catalyst system as well as a preparation method and application of the carrier. The preparation method comprises the following steps: dispersing PVP into ethyl alcohol, stirring and dissolving to obtain a PVP ethyl alcohol solution; taking glacial acetic acid to be added into the solution, and adding titanium isopropoxide; dispersing aluminum acetylacetonate into an organic solvent, mixing and stirring the two solutions to obtain a precursor solution, adopting an electrostatic spinning method, indrawing the precursor solution in an injector, inserting the injector into a trace injection pump, connecting with an electrode, adjusting the flow speed and the voltage of an electrostatic field, wherein the distance from a syringe needle to a receiver is 5-15cm, and controlling the indoor humidity to be 30-50%, thereby obtaining nano fibers; sintering the nano fibers obtained by the electrostatic spinning method in a muffle furnace, thereby obtaining the aluminum oxide / titanium oxide heterojunction nano fiber carrier. The catalyst carrier disclosed by the invention is short in preparation cycle, simple in process, low in energy consumption, high in productivity, and good in reproducibility.
Owner:SOUTHEAST UNIV
Stomach tube with device for preventing backflow of gastric content
The invention relates to a stomach tube with a device for preventing the backflow of gastric content, which is divided into a head part, a middle part and a tail part. The stomach tube is characterized in that a main channel for infusing nutrient solutions, water and medicaments is penetrated through the head part, middle part and tail part in the stomach tube; the head part is provided with two parallel cavities; the upper end opening of the main channel is communicated with the head part of the stomach tube and is open at a main cavity of the two parallel cavities; a subsidiary cavity for infusing gas is further arranged in the two parallel cavities at the head part of the stomach tube; the subsidiary cavity is provided with a charging connector having a locking device; the subsidiary cavity is communicated with an umbrella-shaped backflow-preventing device around the outer wall at the middle lower part of the stomach tube through a gas bag channel positioned in the wall of the stomach tube; and the tail part of the stomach tube is provided with the lower end opening of the main channel. The invention can effectively solve the serious clinical problem such as suffocation, inhalation pneumonia and the like caused by mistakenly inhaling gastric content backflow into the trachea.
Owner:苏勇
Separator modifying method for zinc in negative battery
The application discloses a method for suppressing zinc dendrite in a zinc negative electrode battery over a wide temperature range, and particularly relates to a separator modifying method for zinc in a negative battery, which uniformly disperses polymer compounds having hydrophilic groups in separators to reduce the contact angle between the electrolyte and the zinc negative electrode and make the potential distribution on the surface of the zinc negative electrode more uniform, thereby making the deposition of zinc ions more uniform. Compared with the existing method for inhibiting zinc dendrite, the method is not only more obvious in the effect of inhibiting zinc dendrite, but is more conducive to practical operation, and lower in cost.
Owner:江苏羊羊绿色电池有限公司
Acidic biological adhesion heat-variable gelling agent, its preparing method and uses
ActiveCN101172159AThermoreversibleInsulationOrganic active ingredientsPharmaceutical delivery mechanismDiseaseLiquid state
The invention discloses acidic biologic adhesion heat-variable gelling agent, which includes (a) 12-20 wt percent of polyoxy ethylene polyoxy propylene polymer, (b) 0.5-10wt percent of polydimethyl siloxane and (c) 1.0-2.5 wt percent of acidity buffering agent. The invention is characterized in that a pH value is 3.0 to 4.5, the gelling agent is under a liquid state at the temperature less than and equal to 28 DEG C, and is under a gel state at the temperature more than and equal to 32 DEG C. The acidic biologic adhesion heat-variable gelling agent is used to prepare liquid preparation with the function of both contraception and preventative spread disease (STDs / HIV). The acidic biologic adhesion heat-variable gelling agent provides reformation and convenience for a production process, the loading and filling operation of the liquid medicine is convenient, the filling amount is accurate, and the invention particularly is suitable for GMP scale production and becomes an optimal substitute of a contraceptive sheath or lubricating additive.
Owner:上海市生物医药技术研究院
Irradiation crosslinking hemostasis gel material and preparation method thereof
ActiveCN107233612APromote absorptionReduce volumeSurgical adhesivesPharmaceutical delivery mechanismPolyvinyl alcoholDistilled water
The invention relates to an irradiation crosslinking hemostasis gel material which comprises the following raw materials in parts by weight: 100 parts of polyvinyl alcohol, 5-25 parts of nanometer chitosan, 5-20 parts of 3,6-carboxymethyl chitosan, 4-25 parts of konjac gluconate quaternary ammonium salt and 2-10 parts of surfactant. In a preparation process, the nanometer chitosan, 3,6-carboxymethyl chitosan, konjac gluconate quaternary ammonium salt and distilled water are mixed and prepared into a solution A, the polyvinyl alcohol, the surfactant and the distilled water are mixed and prepared into a solution B, and then the solution A and the solution B are mixed and then subjected to irradiation crosslinking and lastly the non-crosslinked monomers are removed. The gel material has excellent hemostasis and antibacterial properties.
Owner:HUBEI XIANGYUAN NEW MATERIAL TECH INC
Graphene slurry for cationic waterborne polyurethane coating, and preparation method and application thereof
ActiveCN107365514ALong storage timeIncrease crosslink densityAnti-corrosive paintsPolyurea/polyurethane coatingsElastic modulusOxide
The invention discloses a graphene slurry for a cationic waterborne polyurethane coating, and a preparation method and application thereof. The graphene slurry for the cationic waterborne polyurethane coating is an aqueous dispersion of modified graphene prepared by modifying graphene oxide with carbodiimide to obtain the modified graphene and then dispersing the modified graphene in water, wherein in the aqueous dispersion of the modified graphene, a ratio of the modified graphene to water is 2-20 mg: 1 ml in terms of the dry weight of the modified graphene. The graphene slurry can be cooperated with cationic waterborne polyurethane resin, so the advantage of long-term stable dispersion is obtained, and the graphene slurry is friendly to environment, long in storage time and free of precipitation, flocculation and gelation after storage at room temperature for one year or more. A coating prepared from the graphene slurry has elastic modulus of 2.2-2.31 GPa and neutral salt spray time of 72 to 120 h.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Metal ion/zirconium phosphate aerogel, preparation method thereof and composite phase change energy storage material
ActiveCN111841457AEnhanced interactionHigh mechanical strengthHeat-exchange elementsAerogel preparationPhysical chemistryPhosphoric acid
The invention relates to the technical field of phase change materials, in particular to a metal ion / zirconium phosphate aerogel, a preparation method thereof and a composite phase change energy storage material. According to the metal ion / zirconium phosphate aerogel, a sacrificial metal ion ligand enhanced coordination bond is formed between zirconium phosphate nanosheets in the metal ion / zirconium phosphate aerogel, and the interaction between the zirconium phosphate nanosheets is increased, so that the mechanical strength of a composite phase change material is improved; a large number of acid points and Lewis acid points exist between zirconium phosphate nanosheet layers, polymer crosslinking and carbonization can be catalyzed during high-temperature combustion, in addition, zirconiumphosphate nanosheets can also play a physical barrier role, and the zirconium phosphate nanosheets and the polymer crosslinking and carbonization can jointly prevent diffusion of oxygen and heat, so that the composite phase change material has excellent flame retardant property. Zirconium phosphate aerogel in the metal ion / zirconium phosphate aerogel can load more phase change materials, and the energy storage density is improved.
Owner:GUANGDONG UNIV OF TECH
Skin wound caring composition, caring agent and preparation method
InactiveCN110141627ASpeed up wound healingSimple recipeAntibacterial agentsAntimycoticsPropolisMedicine
The invention discloses a skin wound caring composition, a caring agent and a preparation method. The skin wound caring composition comprises the following raw materials in parts by weight: 2-20 partsof ethanol, 1-10 parts of aloe vera gel, 0.5-5 parts of propolis and 2-20 parts of mint oil. The skin wound caring agent comprises the skin wound caring composition. Compared with the prior art, theskin wound caring composition has the benefits as follows: the ethanol and the propolis in the skin wound caring composition have sterilization and anti-inflammatory functions and have heat clearing and pain relieving functions under assistance of mint oil, the aloe vera gel is used, so that the skin wound caring composition has the advantages of increasing skin wound healing speed and reducing bacterial infection risk of skin wounds. Meanwhile, the wound caring composition is simple in formula and low in cost.
Owner:中南苑(深圳)药械研究有限公司
Composite polymer gel electrolyte as well as preparation method and application thereof
InactiveCN111224157AImprove stability and securityIncrease initial specific capacityLi-accumulatorsSecondary cells servicing/maintenanceCarbon nanotubePhysical chemistry
The invention relates to a composite polymer gel electrolyte as well as a preparation method and application thereof, which solves the technical problems of single performance and poor mechanical property of the existing material. The composite polymer gel electrolyte consists of an ammonium polyphosphate modified polyacrylonitrile electrolyte layer and a carbon nano tube / polyacrylic acid layer. The invention further provides a preparation method and application of the composite polymer gel electrolyte. The preparation method can be applied to the field of battery electrolyte preparation.
Owner:BEIJING UNIV OF CHEM TECH
Implantable flexible electronic device and preparation method thereof
ActiveCN112752419AGood biocompatibilityImprove water resistanceCircuit bendability/stretchabilityElectrotherapyHemt circuitsEngineering
The invention relates to an implantable flexible electronic device and a preparation method thereof, and the preparation method comprises the steps: providing a body which comprises a flexible substrate and a circuit assembly disposed on the flexible substrate; manufacturing a hydrophobic shell layer wrapping the body on the body; and manufacturing a hydrophilic shell layer wrapping the hydrophobic shell layer on the hydrophobic shell layer to obtain the implantable flexible electronic device. The Young modulus of the implantable flexible electronic device is closer to the Young modulus of human tissues, and the implantable flexible electronic device has excellent biocompatibility and waterproof effect and is more excellent in use effect.
Owner:INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1
A kind of radiation cross-linked hemostatic gel material and preparation method thereof
ActiveCN107233612BPromote absorptionReduce volumeOrganic active ingredientsSurgical adhesivesPolyvinyl alcoholActive agent
The invention relates to an irradiation crosslinking hemostasis gel material which comprises the following raw materials in parts by weight: 100 parts of polyvinyl alcohol, 5-25 parts of nanometer chitosan, 5-20 parts of 3,6-carboxymethyl chitosan, 4-25 parts of konjac gluconate quaternary ammonium salt and 2-10 parts of surfactant. In a preparation process, the nanometer chitosan, 3,6-carboxymethyl chitosan, konjac gluconate quaternary ammonium salt and distilled water are mixed and prepared into a solution A, the polyvinyl alcohol, the surfactant and the distilled water are mixed and prepared into a solution B, and then the solution A and the solution B are mixed and then subjected to irradiation crosslinking and lastly the non-crosslinked monomers are removed. The gel material has excellent hemostasis and antibacterial properties.
Owner:HUBEI XIANGYUAN NEW MATERIAL TECH INC
Graphene slurry for anionic aqueous polyurethane coatings, preparation method of graphene slurry and application
ActiveCN107418256ASolve reunionSolve technical problems such as cascadingAnti-corrosive paintsPolyurea/polyurethane coatingsFlocculationDispersion stability
The invention discloses graphene slurry for anionic aqueous polyurethane coatings, a preparation method of the graphene slurry and an application. The graphene slurry for the aqueous polyurethane coatings is modified graphene aqueous dispersion, oxidized graphene is modified by carbodiimide to obtain modified graphene, and the modified graphene is dispersed into water to obtain the modified graphene aqueous dispersion. In the modified graphene aqueous dispersion, according to the dry weight of the modified graphene, the ratio of the modified graphene to water is 2-20mg: 1ml. The graphene slurry can be matched with anionic aqueous polyurethane resin to achieve the advantage of long-term dispersion stability, is environmentally friendly and long in preservation time, and is capable of being preserved for at least one year at room temperature without deposition, flocculation or gelling. After use, the elastic modulus of the finally obtained coatings can reach 2.23-2.34GPa, and neutral salt spray time can reach 60-120 hours.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Liquid dressing and production method thereof
InactiveCN110237297AAct as a physical barrierGuaranteed temperature and humidity healing conditionsBandagesStaphylococcus aureusProtection layer
The invention provides a liquid dressing and a production method thereof, and belongs to the technical field of medical supplies. The liquid dressing is composed of polyvinylpyrrolidone (PVP), carbomer 940 and purified water. Microbial limit requirements are that the total number of aerobic bacteria is less than or equal to 100 cfu / mL, the total number of molds and yeasts is less than or equal to 100 cfu / mL, and staphylococcus aureus and pseudomonas aeruginosa are not detected. The liquid dressing is prepared from, by weight, 0.5-50.00% of the polyvinylpyrrolidone, 0.1-0.50% of the carbomer 940, 0.1-99% of the purified water and an appropriate quantity of a preservative. The technological method comprises the steps that the raw materials are weighed according to a formula ratio, the raw material polyvinylpyrrolidone and preservative are placed in a container filled with the purified water, so that the polyvinylpyrrolidone and the preservative are fully dissolved to prepare a solution; the carbomer 940 raw material is placed in an another container filled with purified water, so that the carbomer 940 raw material fully swells to prepare a hydrogel solution, and then the solution and the hydrogel solution are mixed, stirred uniformly and subpackaged to form the liquid dressing. A protection layer is formed on the surface of a wound, which plays a physical barrier role. The liquid dressing is used for nursing of small wounds, abrasions, incised wounds and other superficial wound surfaces and surrounding skin.
Owner:广州医美药业有限公司
Preparation method for cerium oxide nanorod array/graphene composite material and application of cerium oxide nanorod array/graphene composite material in photocathode protection
ActiveCN111519228AEvenly dispersedCurl suppressionMaterial nanotechnologyElectrolytic inorganic material coatingElectron holePhotocathode
The invention relates to a preparation method for a cerium oxide nanorod array / graphene composite material and application of the cerium oxide nanorod array / graphene composite material in photocathodeprotection. The preparation method comprises the following steps that a conductive substrate is taken as a substrate, and a CeO2 nanorod array is grown on the substrate through an electro-depositionmethod; and then the CeO2 nanorod array is activated by using a SnCl2 ethanol solution, tin ion is deposited on the CeO2 nanorod array, the CeO2 nanorod array is immersed into a GO solution, GO is reduced into rGO through the tin ion, and meanwhile, electrostatic adsorption is carried out on the tin ion and rGO, so that the CeO2 nanorod array is connected to a graphene upper sheet, and the ceriumoxide nanorod array / graphene composite material is constructed. The cerium oxide nanorod array structure can not only improve the light absorption rate, but also can effectively promote the electron-hole separation and the directional transmission efficiency of carriers under illumination, the physical barrier of a flaky material is combined with the anticorrosion of a traditional photocathode, the synergistic effect between the flaky material and the traditional photocathode is exerted, and the anticorrosion performance is further improved.
Owner:江苏纳欧新材料有限公司
Organic silicon waste contact body borne nickel-based methanation catalyst and preparation method therefor
ActiveCN104841448AHigh thermal conductivityImprove anti-sinteringHydrocarbon from carbon oxidesMetal/metal-oxides/metal-hydroxide catalystsHigh concentrationMethanation
The invention belongs to the field of methanation catalysis, and relates to an organic silicon waste contact body borne nickel-based methanation catalyst and a preparation method therefor. The catalyst comprises a carrier, an active component, a modifier and an auxiliary agent, wherein the carrier is an organic silicon waste contact body, the modifier is a porous inorganic oxide, the active component is Ni, and the auxiliary agent is a transition metal oxide. By using the porous inorganic oxide modifier in the invention, on one hand, the interacting force between the active component and the carrier is enhanced, and the dispersibility of the active component is improved; on the other hand, the inorganic oxide dispersed in the active component further serves as a physical barrier, and suppresses agglomeration and sintering of Ni particles. The catalyst obtained in the invention is high in catalytic activity, high in anti-carbon deposition and anti-sintering performance and low in cost, and particularly suitable for methanation reaction systems of high-concentration CO.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Oral care agent for superficial wound care and application method thereof
InactiveCN111184674AImprove securityImprove repair effectCosmetic preparationsToilet preparationsMouth carePharmaceutical Substances
The invention discloses an oral care agent which is used for superficial wound care and applied to field of oral care, and an application method thereof. The oral care agent comprises the following components in percentage by weight: 10%-18% of acid, 6%-17% of a carboxyl compound, 0.6%-1.8% of phenol, 0.2%-0.3% of flavones, 0.7%-2.1% of plant factors and 60.8%-82.5% of purified water, wherein theacid, the carboxyl compound and the phenol are hawthorn seed extracts. The oral care agent can form a protective film on the surface of a wound to play a role of a physical barrier, so that the repairing effect of internal medicines on the wound surface is improved. Meanwhile, the components are simple, most of the components are extracted from plants, the product safety can easily reach the foodgrade, and the applicability to the oral environment is effectively improved. Besides, the application method is simple and rapid, and the operation efficiency is improved. On the one hand, medicine strengthening operation is conducted on local parts through wet compressing, and on the other hand, a spray can guarantee the oral cavity environment, so that the good nursing environment is continuously kept, and the repairing effect is improved.
Owner:苏州秀欣生物科技有限公司
Metal plate, building and preparation method of metal plate
ActiveCN113789506AExtended service lifeImprove corrosion resistanceMetallic material coating processesInorganic saltsMetallic materials
The invention discloses a metal plate, a building and a preparation method of the metal plate, and relates to the technical field of metal material treatment. The service life of the metal plate is prolonged. The preparation method of the metal plate comprises the steps that corrosion-resistant elements including Cu, P, Cr, Si, Ni and Mo are added into a weather-resistant steel substrate, and a compact and stable rust layer can be formed on the surface of the weather-resistant steel substrate in the using process; the upper surface and the lower surface of the weather-resistant steel substrate are subjected to passivation treatment through passivation liquid, and passivation layers are formed on the surface of the weather-resistant steel substrate; and the faces, deviating from the weather-resistant steel substrate, of the two passivation layers are subjected to fingerprint-resistant agent treatment, and fingerprint-resistant layers are formed, wherein the passivation liquid contains an inorganic salt compound and a copper corrosion inhibitor at the same time. The metal plate and the preparation method thereof are used for building manufacturing.
Owner:LONGI SOLAR TECH CO LTD
Formula preparation method of high-flame-retardant material for window screen
The invention discloses a formula of a high-flame-retardant material for a window screen. The formula comprises polypropylene, polyethylene, polyethylene terephthalate, a flame retardant, a surfactant, an antioxidant, an anti-dropping agent and a lubricant. The high-flame-retardant material for the window screen, disclosed by the invention, has the beneficial effects that aluminum powder is used as the flame retardant, so that the flame retardant effect is good, the heating rate of a material is slowed down, the combustion is hindered, and the aluminum powder covering the surface of the material plays the role of a physical barrier, and can insulate heat and oxygen and inhibit the flow of a flammable gas to a matrix to achieve the effect of flame retardancy; the high-flame-retardant material has excellent weather resistance, aging resistance, heat resistance and long service life, and does not decompose to produce toxic substances; the high-flame-retardant material has no smoke or toxic substances in a combustion process, and has good strength and impact resistance; furthermore, the material has good bonding performance and does not need to use additional binders when being woven into a yarn mesh, thereby being safe and environmentally friendly.
Owner:天津市恒宇磁塑制品有限公司
A kind of phosphomolybdic acid intercalation hydrotalcite-like lightweight foam heat insulation material and preparation method thereof
ActiveCN110669246BHigh porosityImprove flame retardant performancePassive housesPhosphomolybdic acidCellulose
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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