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Laser Illuminator System
InactiveUS20130163627A1Improve thermal conductivityHeat dissipation fastSolid-state devicesSemiconductor lasersVertical-cavity surface-emitting laserLow inductance
An optical illuminator using Vertical Cavity Surface Emitting Laser (VCSEL) is disclosed. Optical modules configured using single VCSEL and VCSEL arrays bonded to a thermal submount to conduct heat away from the VCSEL array, are suited for high power and high speed operation. High speed optical modules are configured using single VCSEL or VCSEL arrays connected to a high speed electronic module on a common thermal submount or on a common Printed Circuit Board (PCB) platform including transmission lines. The electronic module provides low inductance current drive and control functions to operate the VCSEL and VCSEL array. VCSEL apertures are designed for a desired beam shape. Additional beam shaping elements are provided for VCSELs or VCSEL arrays, for desired output beam shapes and / or emission patterns. VCSEL arrays may be operated in continuous wave (CW) or pulse operation modes in a programmable fashion using a built-in or an external controller.
Owner:PRINCETON OPTRONICS
Pentasil-type molecular sieve containing composition and its preparation method
InactiveUS6080698AGood thermal and hydrothermal stabilityExcellent thermalCatalytic crackingMolecular sieve catalystsMolecular sieveOxide
A molecular sieve containing composition, which can be applied in catalytic cracking reaction for producing more ethylene and propylene, and its preparation method. The composition contains a pentasil-type molecular sieve having a SiO2 / Al2O3 molar ratio of 15-60, prepared by activation and modification with phosphorus, alkaline earth metal and transition metal. The composition essentially includes 85 DIFFERENCE 98% wt of pentasil-type molecular sieve, 1 DIFFERENCE 10% wt of P2O5, 0.3 DIFFERENCE 5% wt of alkaline earth oxide, and 0.3 DIFFERENCE 5% wt of transition metal oxide. The molecular sieve structure and active centers have high thermal and hydrothermal stability. The salient feature of this composition is that when applied as an active component of cracking catalyst for catalytic pyrolysis process, the yield of ethylene is above 18% and the total yield of ethylene and propylene is more than 40%.
Owner:CHINA PETROCHEMICAL CORP +1
Hexagonal barium ferrite magnetic particle and method of manufacturing the same, and magnetic recording medium
InactiveUS20120177951A1Inhibit drop in thermal stabilityEnsure easeMagnetic materials for record carriersInorganic material magnetismBiological activationMaterials science
An aspect of the present invention relates to a hexagonal barium ferrite magnetic particle, wherein, relative to 100 atom percent of a Fe content, an Al content ranges from 1.5 to 15 atom percent, a combined content of a divalent element and a pentavalent element ranges from 1.0 to 10 atom percent, an atomic ratio of a content of the divalent element to a content of the pentavalent element is greater than 2.0 but less than 4.0, and an activation volume ranges from 1,300 to 1,800 nm3.
Owner:FUJIFILM CORP
Nanofiber and preparation method thereof
InactiveUS20110151255A1Simple structureExcellent thermalMaterial nanotechnologyElectric discharge heatingFiberNanoparticle
A nanofiber, which is prepared by using a fabrication method comprising the steps of spinning a spinning solution prepared by dissolving at least one precursor for metal, metal oxide, or metal complex oxide with a polymer mixture comprising at least two polymers having different molecular weights and glass transition temperatures in a solvent and thermally treating the spun fiber, comprises close-packed nanoparticles of a metal, a metal oxide, a metal complex oxide or a mixture thereof and has excellent structural, thermal, and mechanical stability as well as a uniform fiber-shape.
Owner:KOREA INST OF SCI & TECH
Method of joining ceramics: reaction diffusion-bonding
InactiveUS20060162849A1Suitable characteristicMaintain structural integrityAfter-treatment detailsLamination ancillary operationsBond interfaceSolid solution
Provided is a method of joining compound materials such as ceramics. The method is a combination of diffusion bonding and reaction bonding, which is called reaction diffusion bonding (RDB). The method includes: grinding, lapping, or polishing entire or portions of surfaces to be joined of two or more pieces of a compound material; forming a thin film of a joining agent on one or more of the ground, lapped, or polished surfaces by one of inserting, spreading, depositing, plating, and coating, the joining agent being able to transform into the compound material by being incorporated into the compound material or by forming a solid solution with the compound material upon heat treating; and forming a directly bonded interface without a second phase by heat treating the pieces of the compound material with the to-be-joined surfaces on which the joining agent film is formed arranged to face each other, wherein the joining agent thin film is composed of a material selected from the group consisting of metals, metal organics, and metal compounds.
Owner:CERAWEL
Ce:YAG microcrystalline glass used for white light LED and preparation method of Ce:YAG microcrystalline glass
The invention provides Ce:YAG microcrystalline glass capable of achieving yellow luminescence under the condition of blue light excitation and a preparation method of the Ce:YAG microcrystalline glass, and Ce:YAG fluorescence microcrystals are inlaid uniformly in an oxide glass matrix of the microcrystalline glass. The microcrystalline glass comprises glass components in percentage by mole as follows: 0-10 mol% of SiO2, 0-40 mol% of GeO2, 20-60 mol% of TeO2, 0-25 mol% of B2O3, 0-15 mol% of P2O5, 0-10 mol% of Al2O3, 0-20 mol% of Ae2O, 0-20 mol% of ZnO, 0-15 mol% of BaO, 0-20 mol% of Sb2O3, 0-20 mol% of La2O3 and 0-10 mol% of Bi2O3, wherein Ae is selected from Li, Na or K; and the content of Ce:YAG microcrystals is 1-15 wt% of the oxide glass matrix. The invention further provides a preparation method for the microcrystalline glass. The microcrystalline glass provided by the invention can emit yellow light under the excitation of blue light, the yellow light and the blue light are combined to generate intense white light, and accordingly, the microcrystalline glass and the method can be used for development and application of construction of the white light LED which is excited by a blue light chip.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
High-thermal conductivity lubricating oil and preparation method thereof
ActiveCN102911762AImprove anti-friction and anti-wear effectImprove thermal conductivityAdditivesGrapheneBase oil
The invention relates to high-thermal conductivity lubricating oil and a preparation method thereof. The lubricating oil contains base oil and fluorinated graphene nanosheets, wherein the weight percent of content of the fluorinated graphene nanosheets is 0.01 to 10.0 %; and the preparation method comprises the steps as follows: firstly, preparing the fluorinated graphene nanosheets; and secondly, preparing the lubricating oil containing the fluorinated graphene nanosheets. The lubricating oil provided by the invention has the advantages of excellent antifriction effect, extremely high heat conduction capability and excellent stability and dispersibility.
Owner:青岛康普顿石油化工有限公司
Compositions containing delta-9-THC-amino acid esters and process of preparation
ActiveUS8809261B2Improve formulation characteristic and bioavailabilityExcellent thermalBiocideSenses disorderDiseaseTyrosine
Compositions of the formulae (I), (II) and (III); where R1, R2 and R3 are residues of amino acids such as, but not limited to, valine, sarcosine, leucine, glutamine, tryptophan, tyrosine, alanine and 4(4-aminophenyl)butyric acid or combination thereof, and salts thereof. Methods of preparation of these compositions and methods of treating any disease condition responsive to THC comprising administration of at least one these compositions in a pharmaceutically acceptable carrier using a pharmaceutically acceptable formulation.
Owner:UNIVERSITY OF MISSISSIPPI
Method for effectively preparing high-orientation and high-compactness two-dimensional material thin film
ActiveCN108568926ASolution coatingUniform coatingFlat articlesCoatingsComposite filmMechanical property
Owner:深圳烯材科技有限公司
Proton conducting solid oxide fuel cell systems having temperature swing reforming
ActiveUS20060188760A1Excellent thermalImprove material efficiencyFuel cells groupingFuel cell auxillariesSyngasFuel cells
The present invention provides an improvement in the process of producing energy from fuel cells. A cyclic reforming process, referred to as temperature swing reforming, provides an efficient means for producing a hydrogen containing synthesis gas for use in proton conducting solid oxide fuel cell applications. In one embodiment, at least some synthesis gas which is first produced in the temperature swing reforming process is combusted with air to provide the heat for the regeneration step of the temperature swing reforming process. The syngas produced in TSR is particularly well suited for use in proton conducting solid oxide fuel cell applications.
Owner:EXXON RES & ENG CO
Plant oil-based polyurethane composite material and preparation method thereof
The invention discloses a plant oil-based polyurethane composite material and a preparation method thereof and belongs to the technical field of high polymer materials. The synthesized composite material comprises the following components: plant oil-based polyhydric alcohols, an organic tin catalyst, polyisocyanates and a short chain extender, wherein the modified nano reinforced material is polysilsesquioxane. According to the polyurethane composite material disclosed by the invention, the reproducible epoxidized plant oil serves as an initial raw material, and a modification effect is achieved by physically dispersing the polysilsesquioxane in a polyurethane matrix. The plant oil-based polyurethane composite material has the advantages that the initial raw material is green and environment-friendly, and multiple problems such as energy crisis and environmental pollution can be relieved; physical modification is performed by adopting the polysilsesquioxane with a regular structure, and the method is easy and convenient to implement; and moreover, the modified material has the advantages of high mechanical strength and high heat stability, and the application range of the materials can be further widened.
Owner:JIANGNAN UNIV
High flux sapo-34 membranes for co2/ch4 separation and template removal method
InactiveUS20120006194A1Excellent thermalImprove mechanical propertiesMembranesSemi-permeable membranesOrganic structureCarbon dioxide
The present invention provides methods for making improved zeolite and crystalline silicoaluminophosphate (SAPO) membranes, in particular SAPO-34 membranes, on a porous support through improved removal of the organic structure-directing templating agent. A calcining step is performed in an oxygen free atmosphere, such as under a vacuum or inert gas, to remove the organic templating agent. By removing the templating agent in the absence of oxygen, the calcination step can remove a greater amount of the templating agent than comparable template removal steps conducted in the presence of oxygen and the calcination step can be conducted at significantly lower temperatures. The membranes of the present invention provide increased permeance while maintaining comparable selectivity for gas separations, particularly carbon dioxide (CO2) and methane (CH4) separations and separations at high temperatures.
Owner:UNIV OF COLORADO THE REGENTS OF
Preparing method of copper-base electric contact material enhanced by in-situ grown graphene
InactiveCN105483641AImprove mechanical propertiesExcellent thermalTransportation and packagingMetal-working apparatusMethane gasPlasma chemistry
The invention discloses a preparing method of a copper-base electric contact material enhanced by in-situ grown grapheme, relates to the preparing method of the copper-base electric contact material, solves the problems that a conventional silver-base electric contact composite material is high in cost and low in cost performance, and overcomes the defect that when a copper-base composite material with high performance replaces metal silver, grapheme is dispersed in copper nonuniformly. The method comprises the following steps: placing copper powder in a plasma enhanced chemical vapor deposition vacuum device, introducing hydrogen, insulating at a high temperature, introducing methane gas for deposition, stopping introducing methane gas after the deposition is finished, and finally cooling to be below the room temperature to obtain grapheme / copper composite powder.
Owner:HARBIN INST OF TECH
Innoxious negative ion aqueous polyurethane and preparation method thereof
The invention discloses a preparation method of innoxious negative ion aqueous polyurethane, and aqueous polyurethane prepared by the method. The method comprises the following steps: mixing dicyclohexyl methane diisocyanate and aliphatic diol according to a mol ratio of 2.5 to 4; carrying out reaction for 3 to 5 hours at 70 to 90 DEG C to obtain performed polymers; adding dimethylolbutyric acid with hydrophilic groups for taking the reaction for 3 to 5 hours; adding KOH water solution for emulsifying dispersion; and dripping diamine chain extenders for extending chains to obtain aqueous polyurethane latex emulsion. The invention adopts the aliphatic diisocyanate dicyclohexyl methane diisocyanate resin and the aliphatic polymeric diol, does not contain organic solvents such as NMP, acetone and the like often used for preparing the aqueous polyurethane, and does not contain common use neutralizing agents such as triethylamine and the like. The completely innoxious polyurethane material can be prepared, and the invention can be widely used in the fields of medical and health, food and household articles.
Owner:WANHUA CHEM GRP CO LTD
Transparent autoclavable bag
InactiveUS20060016708A1Improve barrier propertiesSufficient barrier propertySurgical furnitureDiagnosticsPolyethylene terephthalatePolyolefin
An autoclavable sterilization bag is provided having first and second composite film laminates positioned in opposing relation and sealed to one another to form a pouch. At least the first laminate comprises a heat sealable transparent thermoplastic polymer inner layer forming an inner surface of the laminate and a transparent polymer film outer layer. A transparent barrier layer is located between the inner and outer layers and formed of molecularly oriented polychlorotrifluoroethylene (PCTFE). In advantageous specific embodiments of the invention, the heat sealable transparent thermoplastic polymer inner layer is a polyolefin film, and the transparent polymer outer layer is a film selected from the group consisting of polyethylene terephthalate, nylon, polypropylene, polyethylene and cellophane.
Owner:AMCOR FLEXIBLES INC
Eutectoid electrolyte and application thereof in secondary zinc battery
The invention relates to eutectoid electrolyte and a secondary zinc battery using the eutectoid electrolyte. The eutectoid electrolyte contains an acylamino-contained compound and an ionizable organicmetal salt. The eutectoid electrolyte provided by the invention has the characteristics of low viscosity, high ionic conductivity, wide electrochemical window, low cost and insensitiveness to water and air; meanwhile, reversibility and stability of electrochemical deposition / dissolution can be remarkably improved by an interface protecting layer formed by in-situ decomposition of organic anions,so that the problem of poor cycle life of the secondary zinc battery is effectively solved. The secondary zinc battery using the eutectoid electrolyte has the advantages of good charge-discharge cycleperformance, greenness, environmental protection and low price.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Method for making a prepreg
InactiveUS20050028925A1Quantity minimizationExcellent thermalLamination ancillary operationsSynthetic resin layered productsThermal conductivityElectrical and Electronics engineering
A continuous method to make a prepreg with improved thermal conductivity and electrical properties for use in multilayer printed circuit boards.
Owner:FERNANDES KARIM B +1
Method for preparing graphene by using lignin
The invention belongs to the technical field of carbon material manufacturing technology, and in particular relates to a method for preparing graphene by using lignin as a raw material. The method is as follows: a layered or powdered material is used as a substrate, the lignin and a catalyst precursor are alternately assembled on the surface of the substrate by a layer-by-layer electrostatic self-assembly method, then a lignin / catalyst precursor / substrate composite is put into a double-temperature-zone tubular furnace, a H2 / Ar mixed gas is introduced into the double-temperature-zone tubular furnace at a certain speed, at the same time the double-temperature-zone tubular furnace is heated by a certain procedure, after the double-temperature-zone tubular furnace is heated to target temperature, the temperature of the double-temperature-zone tubular furnace is held for a certain time, when the double-temperature-zone tubular furnace is cooled to room temperature, the sample is taken out, and is soaked in an acid for catalyst removal, and after a plurality of times of washing and vacuum drying, the graphene is obtained. The method has the advantages of simple process and convenient operation, and the prepared graphene is good in growth, controllable in layer number and considerable in yield.
Owner:SOUTH CHINA UNIV OF TECH
Method for fabricating round and smooth curved surface microstructure
ActiveCN101659391AExcellent thermalImprove mechanical stabilityTelevision system detailsImpedence networksCooking & bakingDiffusion
The invention discloses a method for fabricating a round and smooth curved surface microstructure, which is characterized by comprising the following steps: taking a negative chemically amplified photoresist as a material for fabricating the round and smooth curved surface microstructure; firstly carrying out spin coating of the first layer of the negative chemically amplified photoresist on a substrate, soft baking and exposing, and then directly carrying out spin coating of the second layer of the negative chemically amplified photoresist on the first layer of the negative chemically amplified photoresist, and post-baking; and catalyzing photoresist molecules for cross-linking in an exposure area and an adjacent diffusion area thereof by isotropic diffusion of photo acid generated afterexposure of the first layer of the photoresist during the post-baking process, and developing the cross-linked photoresist molecules to obtain the microstructure with round and smooth curved surface characteristics. Relative to the traditional gray scale mask technology and the traditional photoresist reflowing method, the method for fabricating the round and smooth curved surface microstructure has the characteristics of simple processing, low cost, stable structure and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Electrochemical biosensor for detecting hydrogen peroxide, preparation method and application thereof
ActiveCN106404873ALarge specific surface areaHigh specific surface areaMaterial electrochemical variablesElectrochemical biosensorHemin
The present invention relates to an electrochemical biosensor for detecting hydrogen peroxide, a preparation method and an application thereof. The preparation method comprises the steps of (1) synthesizing the silica-three-dimensional graphene composite material; (2) doping nitrogen and carbon into the synthesized silica-three-dimensional graphene composite material; (3) pretreating a glassy carbon electrode; (4) preparing the glassy carbon electrode modified by the nitrogen-carbon-doped silica-three-dimensional graphene composite material through the dispensing method; (5) putting the glassy carbon electrode into a chloroauric acid solution to prepare gold nanoparticle-nitrogen-carbon-doped silica-three-dimensional graphene glassy carbon electrode through chronoamperometry; (6) dipping the glassy carbon electrode into a double-sulfhydryl-modified GDNA solution and cultivating for 2-4 hours; (7) dipping the composite electrode into a hemin solution for 10-14 hours. The electrochemical biosensor is good in stability and reproducibility, high in specificity and sensitivity, fast and simple and convenient to operate. The electrochemical biosensor can be used for detecting the content of hydrogen peroxide in biological samples, cosmetics and the like.
Owner:广东省汕头市质量计量监督检测所
Carbon nanometer tube field emitting cathode and manufacturing method thereof
ActiveCN103456581AImprove adhesionLarge specific surface areaDischarge tube/lamp detailsCold cathode manufactureHeat transmissionCarbon nanotube
The invention relates to a carbon nanometer tube field emitting cathode and a manufacturing method thereof. The carbon nanometer tube field emitting cathode comprises a conductive substrate, a grapheme layer and a carbon nanometer tube layer, wherein the grapheme layer and the carbon nanometer tube layer are sequentially stacked on the conductive substrate. The theory ratio surface area of grapheme reaches up to 2600m<2> / g, the unique two-dimensional structure of the carbon nanometer tube field emitting cathode can conduct effective electric heat transmission, more excellent thermotics and electrics performance is obtained compared with a carbon nanometer tube, the grapheme layer is arranged between the conductive substrate and the carbon nanometer tube layer, the characteristics of the large grapheme ratio surface area and excellent conductive heat dissipation are brought into full play, adhesive force of the carbon nanometer tube layer can be improved, and an emission current and stability are improved.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Table of wafer polishing apparatus, method for polishing semiconductor wafer, and method for manufacturing semiconductor wafer
InactiveUS7040963B1Excellent thermalIncrease the diameterLapping machinesGrinding feed controlHeat resistanceCarbide
A table for a wafer polishing apparatus having superior heat-resistant, anti-thermal-shock, and anti-abrasion characteristics and capable of increasing the diameter of a semiconductor wafer while improving the quality of the wafer. The table (2) includes a plurality of superimposed bases (11) each of which is formed of silicide ceramic or carbide ceramic. The bases (11) are joined together by an adhesive layer (14). A fluid passage (12) is formed in a joining interface between the bases (11).
Owner:IBIDEN CO LTD
Si3N4 ceramic, Si-base composition for its production, and method for its production
InactiveUS6544917B1Improve oxidation resistanceImprove dispersion propertyMaterial nanotechnologySlurryOxygen
The invention provides a slurry composition suitable for the manufacture of Si.sub.3 N.sub.4 sintered bodies, wherein the dispersion properties and oxidation resistance of Si powder in water are improved, resulting in the homogenous dispersion of a sintering aid powder and a fine Si powder with less oxygen. Si powder, a sintering aid, water in an amount of 50 to 90 wt % relative to the total weight of the composition, and a surface coating agent in an amount of 0.05 to 10 wt % relative to the Si powder are added, the pH is adjusted to between 3 and 8, and the ingredients are milled and mixed. Trivalent metal ions such as Fe or Ga, or a polysiloxane with a BHL of no more than 10 is used as the surface coating agent. The resulting slurry composition can be used to prepare Si.sub.3 N.sub.4 sintered bodies with better electrical, thermal, and mechanical properties.
Owner:SUMITOMO ELECTRIC IND LTD
Er<3+>/Yb<3+> co-doped yttrium lithium fluoride monocrystal and preparation method thereof
InactiveCN102978701AHigh phonon energyPhonon energy low highPolycrystalline material growthFrom frozen solutionsWater vaporOxygen
The invention discloses an Er<3+> / Yb<3+> co-doped yttrium lithium fluoride monocrystal and a preparation method thereof. The yttrium lithium fluoride monocrystal is a rare earth ion Er<3+> / Yb<3+> co-doped monocrystal; the molecular formula is LiY(1-x-y)ErxYbyF4, wherein x is greater than or equal to 0.008 and less than or equal to 0.085, and y is greater than or equal to 0.002 and less than or equal to 0.170; the segregation coefficients of Yb<3+> and Er<3+> in the yttrium lithium fluoride are about 1, and efficient intermediate infrared laser of 2.7 microns can be output; and the yttrium lithium fluoride monocrystal has high transmittance of intermediate infrared laser, has better thermal, mechanical and chemical stabilities than those of glass state materials and has the characteristics of low phonon energy, high optical transmittance of wavebands with width of 300-5500nm, less color center forming amount, low thermal lens effect and the like, thereby being more easily processed and more suitably used in laser devices. In the preparation method disclosed by the invention, a sealing crucible falling technology is used, so that the operation is simple; the raw material is fluorated at high temperature in a sealed water-free and oxygen-free environment, so that the crystal is isolated from air and water vapor during the growth; and therefore, the high-quality Er<3+> / Yb<3+> co-doped LiYF4 monocrystal containing little OH<-> ion and oxide is obtained.
Owner:NINGBO UNIV
Nanometer photo-catalyst used in producing hydrogen by decomposing water under visible light response and application of nanometer photo-catalyst
InactiveCN104028308AExcellent thermalImprove stabilityMaterial nanotechnologyOrganic-compounds/hydrides/coordination-complexes catalystsSolar lightUltraviolet lights
The invention discloses a nanometer photo-catalyst used in producing hydrogen by decomposing water under visible light response and application of the nanometer photo-catalyst. The catalyst is a nanocomposite which is formed by taking a one-dimensional organic semiconductor nanofiber as a framework, coating the surface of the framework with an inorganic semiconductor titanium dioxide nanolayer and uniformly loading platinum nanoparticles, wherein the organic semiconductor nanofiber is prepared by self-assembling super molecules of perylene diimide and cycle-expanding derivatives, naphthalene diimide derivatives or hexabenzobenzene diimide derivatives with the photochemical stability, D-A structures and visible light response, then titanium dioxide is directly loaded in situ in a body phase organic solution and platinum is reduced and deposited through ultraviolet light in a photo-catalysis aqueous solution system. The catalyst is novel in structure, low in cost and available; the preparation process of the catalyst is simple, environmentally-friendly, low in energy consumption and suitable for preparation in scales; the catalyst is capable of decomposing water in the visible light to prepare the hydrogen, has the actual and wide application prospects in preparation of the hydrogen through decomposing the water in solar light and provides a novel idea and an important reference for forming an efficient photo-catalyst responding to the visible light.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Method for preparing in-situ grown carbon nano tube reinforced silver-based electric contact material
InactiveCN103789744AImprove mechanical propertiesExcellent thermalChemical vapor deposition coatingContactsDispersityMaterials preparation
The invention relates to preparation methods for electric contact materials, in particular to a method for preparing an in-situ grown carbon nano tube reinforced silver-based electric contact material. The method aims to solve the technical problems that when a common CNTs / Ag composite material preparation method is adopted, carbon nano tubes are not dispersed uniformly, and a large number of structural defects exist. The method comprises the steps that firstly, Ni(NO3)2 / Ag composite powder is prepared; secondly, a plasma method is adopted for preparation of the electric contact material. According to the method, since the plasma reinforced chemical vapor deposition method is adopted for low-temperature in-situ growth of the carbon nano tubes, structural perfection and uniform dispersity of the carbon nano tubes in silver powder are guaranteed, clustering of the carbon nano tubes in CNTs / Ag-based electric contact composite powder is avoided, and the improvement on the performance of the CNTs / Ag-based electric contact composite powder by the carbon nano tubes is realized in a true sense. The method is used for preparing the in-situ grown carbon nano tube reinforced silver-based electric contact material.
Owner:HARBIN INST OF TECH
Light-resistant antibacterial water-based polyurethane coating and preparation method thereof
ActiveCN108384428AGood dispersionImprove stabilityFireproof paintsAntifouling/underwater paintsWater basedPolyol
The invention relates to light-resistant antibacterial water-based polyurethane coating and a preparation method thereof. The light-resistant antibacterial water-based polyurethane coating is preparedfrom the following raw materials of light-resistant antibacterial compounds, oligomeric polyols, polyisocyanates, catalysts, chain expanding agents, crosslinking agents and neutralizers, wherein thelight-resistant antibacterial compounds are oxidized graphene-cyclodextrin-antibacterial agent compounds and are obtained by modifying oxidized graphene by antibacterial agent coated cyclodextrin. Thecyclodextrin molecules are used for modifying the oxidized graphene; meanwhile, the antibacterial agents are contained in an inner cavity of the cyclodextrin molecules; the oxidized graphene-cyclodextrin-antibacterial agent light-resistant antibacterial compounds are obtained; the light-resistant antibacterial compounds are added into the water-based polyurethane coating, so that the water-basedpolyurethane coating has excellent ultraviolet light resistant performance, high-temperature-resistant performance, anti-aging performance, acid-alkali-resistant performance, antibacterial performanceand the like.
Owner:唐山德生科技有限公司
Polymer inarching carbon nano-tube and method of manufacturing the same
InactiveCN101108727AImprove dispersion stabilityGood water dispersion stabilitySolubilityElectricity
The invention discloses carbon nanotubes and the preparation method of the polymer graft modification, which adopts the acyl groups on the surface of the carbon nanotubes to initiate the ring-shaped monomeric compound to carry out cationic ring-opening polymerization reaction and gain the carbon nanotubes of the polymer graft modification. The invention realizes the surface modification of the carbon nanotubes via simple steps and can regulate the hydrophile and lipophilicity of the surface of the carbon nanotubes. The carbon nanotubes of the gained polymer graft modification and the carbon nanotubes of the polymer salt graft modification in different solvent show good solubility and polymer compatibility, thereby can be used as functional additive to improve the performances such as the electricity, magnetics, heat and mechanics of the polymer.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Carbonitride nano two-dimensional material enhanced structural ceramic and preparation method thereof
The invention discloses a carbonitride nano two-dimensional material enhanced structural ceramic and a preparation method thereof. The preparation method comprises the following steps: S1, weighing carbonitride nano two-dimensional material powder and structural ceramic powder in a preset proportion; S2, uniformly mixing the carbonitride nano two-dimensional material powder with the structural ceramic powder; and S3, sintering the power uniformly mixed in the S2 to obtain the carbonitride nano two-dimensional material enhanced structural ceramic. The carbonitride nano two-dimensional materialenhanced structural ceramic and the preparations method thereof are simple and rapid and green and environment-friendly. The research range of a novel structure-function integrated ceramic and ceramic-based composite material is expanded.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
A chalcogen-containing organic compound and a use thereof
ActiveUS20160013425A1Easy to synthesizeExcellent thermalOrganic chemistrySolid-state devicesSimple Organic CompoundsChemical compound
A compound is represented by Formula (1):wherein, each X is independently oxygen, sulfur, or selenium; m is 0 or 1; each n is independently 0 or 1; R1-R3 are each independently, for example, hydrogen or alkyl having 1 to 20 carbons;wherein(i) in the case of m=0, it is excluded that all of R1-R3 are hydrogen at the same time;(ii) in the case of m=0, n=0 and in the case that m is 0, one of n is 0 and the other is 1, it is excluded that “both of X are sulfur and all R3s are the same atoms or groups at the same time”;(iii) in the case of m=0, n=1, it is excluded that all R3s are the same atoms or groups at the same time, and at least one of R3s is hydrogen.
Owner:JNC CORP +1
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