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64results about How to "Particle stabilization" patented technology
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Preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing
The invention discloses a preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing and belongs to the technical field of preparation of metal powder. The method comprises the following steps: firstly, by using a high-purity titanium block material as a raw material, performing arc evaporation under an inert gas environment, and meanwhile, charging hydrogen to synthesize titanium hydride nano powder through a gas-phase reaction; secondly, agglomerating and granulating the titanium hydride nano powder to obtain micron-sized titanium hydride powder with higher density; finally, performing heat treatment on the granulated micron-sized titanium hydride powder, and performing degumming, dehydrogenation and compacted consolidation to obtain pure-titanium powder particles of which the particle size, the sphericity and the fluidity meet a 3D printing requirement. According to the method, the sphericity and the particle size distribution of the titanium powder particles are highly controlled; the process is simple, and the cost is low; metal titanium with great activity is stabilized in a new way of generating oxidation-resistant titanium hydride nano powder particles firstly, and the content of oxygen in the titanium powder particles which are finally prepared can be controlled.
Owner:BEIJING UNIV OF TECH
Preparation method of heterogeneous visible photocatalyst
InactiveCN103170353AImprove photocatalytic efficiencyParticle stabilizationPhysical/chemical process catalystsMicro nanoBismuth vanadate
The invention relates to a preparation method of a heterogeneous visible photocatalyst. The preparation method comprises the following steps of: adding bismuth nitrate and a metal chelating agent into solution, dripping mixed solution of metavanadate and polyethylene glycol (PEG), stirring and obtaining solution A; adjusting the pH value of the solution A to be 7.5-10 by using an alkaline agent, stirring under the temperature of 90-100 DEG C to obtain suspension liquid B; carrying out suction filtering, cleaning, drying and calcination on the suspension liquid B to obtain micro-nano particles of bismuth vanadate BiVO4; adding the micro-nano particles of bismuth vanadate BiVO4 into silver nitrate solution, carrying out ultrasonic stirring to obtain solution C; and dripping sulfide into the solution C, carrying out stirring, suction filtering and calcination to obtain the heterogeneous visible photocatalyst. The heterogeneous visible photocatalyst has a good effect to organic pollutants, cannot cause secondary pollution and can be used for a long time.
Owner:DONGHUA UNIV +1
One-step carbonization process of preparing cubic calcium carbonate of 80-100 nm size
InactiveCN1361063AImprove electrical performanceImprove flame retardant performanceCalcium/strontium/barium carbonatesCalcium hydroxideEmulsion
Into calcium hydroxide emulsion of 10-12 wt% concentration and at 20-25 deg.c, compound crystal form controlling agent is added while stirring, and then the mixture is transferred into a bubbling carbonating tower for carbonization for 50-70 min while introducing CO2 gas in the rate of 50-80 1 / min. Kg calcium hydroxide and cold water to control the temperature not higher than 60 deg.c until the pH value being reduced to 7-8. Through the one-step carbonization process, cubic calcium carbonate of 80-100 nm size is prepared. The said process is suitable for use in industrial production and has low production cost and high production efficiency, and the product has excellent dispersant characteristic and may be widely used, especially in producing silicon rubber product.
Owner:GUANGZHOU GBS HIGH TECH & IND
Multicolor water-in-water primer-topcoat coating and preparation method thereof
ActiveCN105419535ANo irritating smellEasy constructionAntifouling/underwater paintsPaints with biocidesEnvironmental resistanceWater based
The invention provides a multicolor water-in-water primer-topcoat coating and a preparation method thereof. The coating comprises disperse-phase color matching basic paint, a protection glue solution and continuous-phase colored paint in the weight ratio being (30-40): (30-40): (20-30). According to the multicolor water-in-water primer-topcoat coating, colored primer is not required to be applied in advance, a multicolor continuous coating with a stone-simulating effect can be obtained only through one-time spraying, and the coating is an ideal alternative of decorative stone materials such as marble, granite and the like. The coating is an all water-based product, contains few VOCs (volatile organic compounds), doesn't contain APEO (alkylphenol ethoxylates), is environment-friendly and free of pungent smell and has excellent weather fastness, and the performance of the product meets the requirements of the HG / T4343-201 water-based multicolor building coating standard.
Owner:ASIA PAINT SHANGHAI
Nanometer calcium carbonate composite concentrated master batch and preparation method thereof
The invention relates to a nanometer calcium carbonate composite concentrated master batch and a preparation method thereof. The concentrated master batch is prepared from 15 to 40 parts of carrier resin, 20 to 80 parts of nanometer calcium carbonate, 1 to 3 parts of a coupling agent, 1 to 3 parts of a dispersing agent and 1.5 to 3.5 parts of a lubricating agent. During preparation, the prepared raw materials are mixed by a high-speed mixing machine and subjected to banburying by an internal mixer sequentially, and then are fed into a single (double) screw extruder by a feeding machine and extruded to prepare the concentrated master batch. The nanometer calcium carbonate composite concentrated master batch prepared by the invention can greatly reduce the product cost and improve the product quality, has high compatibility, can improve the flowability, as well as the dimensional stability and the heat resistance of the product, has an anti-ageing effect, and can effectively improve the rigidity, the toughness, the bending modulus, the surface finish quality and the like of the material.
Owner:SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
A preparation method of fine particle spherical titanium powder for 3D printing
Owner:BEIJING UNIV OF TECH
Preparation method of hydrogenation catalyst for nitrobenzene and derivatives thereof
InactiveCN109647517AIncrease load capacityEvenly distributedOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsNitrobenzeneChemistry
The invention relates to a preparation method of a hydrogenation catalyst for nitrobenzene and its derivatives. A carbon material is functionally modified with a high-molecular polymer and then loadedwith noble metal. The preparation method of the catalyst comprises the following steps: (1) the carbon material and the high-molecular polymer undergo ultrasonic treatment on in a certain concentration of a salt solution at a certain temperature for 0.5 to 6 hour to obtain a functionalized carbon material; (2) noble metal particles with a certain size distribution are prepared from the salt solution of the noble metal under the action of a protective agent and a reducing agent; (3) the aqueous solution or the organic solution of the obtained noble metal particles undergoes ultrasonic treatment for 10 min and is stirred for 2-12 h and then loaded on the functional group modified carbon material so as to obtain a noble metal-loaded catalyst. The preparation method of the catalyst is simple,effective and green and environmentally-friendly. After reduction by the reducing agent, the uniformly-dispersed noble metal-loaded catalyst with a certain size distribution is obtained. In addition,the catalyst has a broad application prospect in the field of catalysis of nitrobenzene and its derivatives.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method of suspending agent containing pyraclostrobin and copper abietate
InactiveCN107410296ARealize clean chemical productionSimple production processBiocideDead animal preservationBacterial diseaseSuspending Agents
The invention discloses a preparation method of a suspending agent containing pyraclostrobin and copper abietate, belonging to the technical field of agricultural sterilizing agents. The preparation method comprises the steps of synthesizing copper abietate in a water phase in one step, adding a pyraclostrobin crude drug during the synthesis, and preparing the suspending agent containing pyraclostrobin and copper abietate by virtue of a sand milling process. Being different suspending agent compounding processes in the prior art, the preparation method has the advantages that copper abietate can be synthesized in one step, and the suspending agent containing pyraclostrobin and copper abietate can be produced. The mass percentage of pyraclostrobin to copper abietate contained in the suspending agent is (1 to 20)-(2 to 1), the mass percentage of effective components (namely pyraclostrobin and copper abietate) in the composition is 5%-40%, and the rest components are aid components and water required in the preparation process of the suspending agent. The compounded suspending agent is mainly used for preventing and treating multiple fungal and bacterial diseases of crops and simultaneously has an obvious stimulation effect to the growth of the crops.
Owner:GUANGDONG GEOLONG BIOTECH
Production method of high-purity pseudo-boehmite, and produced high-purity pseudo-boehmite
PendingCN111807396AIncrease valueLow impurity contentAluminium oxide/hydroxide preparationHydrogen productionMetallic aluminumPtru catalyst
The invention discloses a production method of high-purity pseudo-boehmite. The production method comprises the following steps: a, weighing metal aluminum, subjecting the metal aluminum to smelting with a metal catalyst, and reacting the obtained alloy aluminum with water to prepare hydrogen, wherein the purity of the metal aluminum is not less than 99.9 wt%; b, separating slurry obtained after the reaction of the aluminum with water, drying the separated suspended slurry to obtain pseudo-boehmite, and optionally calcining the pseudo-boehmite to obtain aluminum oxide; c, treating aluminum-water reaction residues after slurry separation so as to recycle the aluminum-water reaction residues. The invention further discloses the obtained pseudo-boehmite. The method is simple in process and short in flow, and hydrogen preparation conditions are easy to realize; the catalysts gallium and indium in the alloy are low in consumption, so raw material cost is low, and recycling is easy to realize; and according to the invention, safety, environmental protection, low cost and high efficiency of hydrogen production can be realized, a high-added-value pseudo-boehmite product can be obtained, and remarkable economic benefits are obtained.
Owner:吉林省氢汇新能源有限公司
Antigen conformation epitope mimic peptide of hepatitis C virus F protein and application thereof
InactiveCN102584952AParticle stabilizationImproving immunogenicityGenetic engineeringFermentationDeoxyriboseAntiserum
The invention belongs to the field of molecular biology and immunology, and discloses antigen conformation epitope mimic peptide of hepatitis C virus F protein and the application of the antigen conformation epitope mimic peptide. The sequence of the antigen conformation epitope mimic peptide of the hepatitis C virus F protein is SEQID (SEQuence IDentifier) NO.1. The antigen conformation epitope mimic peptide adopts the phage display technology, takes anti-rat HCV-F (Hepatitis C Virus-F) antiserum as coating antibodies, screens a phage 12-mer peptide library, and then adopts methods such as ELISA (Enzyme-Linked Immuno-Sorbent Assay), DNA (Deoxyribose Nucleic Acid) sequencing, immunoblotting, bioinformatic analysis and the like to process positive clones that are obtained after screening is carried out for four times, so that the antigen conformation epitope mimic peptide of the hepatitis C virus F protein is found finally, and the antigen conformation epitope mimic peptide can be in specific binding with the anti-rat HCV-F antiserum. The antigen conformation epitope mimic peptide of the hepatitis C virus F protein can be used for preparing a hepatitis C F antibody diagnostic kit. The antigen conformation epitope mimic peptide of the hepatitis C virus F protein has important social benefits and economic benefits for preventing and controlling hepatitis C.
Owner:CHINA PHARM UNIV +2
Activation of brown coal humic acid and preparation method of slow-release coated organic fertilizer thereof
InactiveCN107337510AImprove adsorptionImprove sustained release performanceOrganic fertilisersLayered/coated fertilisersIonAmmonium hydroxide
The invention discloses activation of brown coal humic acid and a preparation method of slow-release coated organic fertilizer thereof. Oxidation of brown coal is conducted through nitric acid, so that the content of the brown coal humic acid, the number of carboxy group on the surface and the adsorptivity to ammonium ion are improved; biological activation of the brown coal humic acid is conducted through zymin, so that the the brown coal humic acid is degraded into small molecular; by means of ammonium hydroxide, a series of reactions such as condensation, oxidation and degradation are conducted, so that nitridation and dissolution of the brown coal humic acid are conducted; proportioning of the brown coal humic acid after nitridation and dissolution, organic composted fertilizer and inorganic fertilizer are conducted to obtain granules, and the granules are coated by a coating agent made from gelatin, CMC-Na, zeolite powder and soybean oil. According to the method, not only is the slow-release performance of the organic fertilizer improved, but the fertilizer granules are stable, moisture-resistant, easy to transport and of low cost; the use ratio of the brown coal is effectively improved, the brown coal humic acid is degraded into small molecular, the hydrophilia is improved, the fertilizer efficiency is significantly improved, technology is simple, the cost is low, and large-scale production can be conducted.
Owner:安徽省瑞森生物科技有限责任公司
Method of using plain soil to produce hydraulic engineering seepage-proofing brick in situ
InactiveCN102633485AImprove adsorption capacityHigh compressive strengthSolid waste managementBrickHydraulic engineering
The invention relates to the field of building materials and the field of water conservancy construction, in particular to various clay, weathered granite soil and hoggin soil. Soil at construction sites of artificial lakes, artificial canals and irrigation channels is used as main materials, special macromolecular coagulant, limestone or gravel sandy soil are mixed with Portland cement, and compression molding equipment is used for once forming of seepage-proofing bricks. The main materials include, by weight, 0.02 part of coagulant, 0.2 part of glass fiber chopped strands (biological straws), 70-80 parts of soil, 5-6 parts of cement and 10-15 parts of gravels (weathered granite soil). In terms of performance, the seepage-proofing bricks made by the method have sufficient compressive strength and shear resistance and can meet the normal artificial water conservancy seepage proofing requirements; in terms of process, operation is simple and easy and soil is taken in situ; and in terms of cost, the cost is at least 50% lower than that of cement mortar seepage proofing, soil needed to be removed at the construction sites is treated, construction cost is reduced, and construction cycle is shortened.
Owner:蒋黔湘 +3
Instant thickening agent for providing comfortable viscosity and preparation method thereof
The invention discloses an instant thickening agent for providing comfortable viscosity. The instant thickening agent comprises 20.0-50.0% of xanthan gum and 50.0-80.0% of maltodextrin. A preparation method of the instant thickening agent comprises putting xanthan gum and maltodextrin powder into a fluidized bed, feeding cold air into the fluidized bed through a heating chamber in the rear of a host, carrying out primarily and medium filtration, heating the air to an inlet air desired temperature through a heater, then feeding the heated air into the fluidized bed, wherein the powder is in a flowing state in the fluidized bed, feeding 1.0-5.0% of pure water into a dual-flow atomizer through a liquid transfer pump, atomizing the pure water and spraying the atomized water to the fluidized material so that two types of powder produces bridge formation aggregation granulation and the particles grow, and discharging the particles through air discharge after water volatilization. The powder granulation reduces dust flying in material use, guarantees particle uniformity, improves product fluidity and instant performances and improves a product value. The product can be widely used as an instant thickening agent of a fluidized food and is suitable for convenient use in a household fluidized food.
Owner:GUANGZHOU KEVIN FOOD CO LTD
Proteome sample pretreatment method based on novel nanometer composite material, and applications thereof
ActiveCN104713963AReduce consumptionReduce abundanceComponent separationPretreatment methodPre treatment
The present invention relates to a new method for using a novel nanometer composite material for protein sample treatment. According to the present invention, with the application of the material in the protein sample pretreatment, the abundance of the high-abundance proteins can be effectively reduced, the complexity of the sample can be reduced, and the more low-abundance proteins in the blood plasma can be identified; and compared with the traditional protein sample pretreatment method, the protein sample pretreatment method of the present invention has characteristics of convenience, easy performing, low cost and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method for realizing micro-encapsulation of core material by acoustic surface wave atomizer
InactiveCN101543757AIncrease generation speedMicroencapsulationEnergy based chemical/physical/physico-chemical processesMicroballoon preparationEmulsionAcoustics
The invention relates to a preparation method for realizing the micro-encapsulation of a core material by an acoustic surface wave atomizer in the technical field of micro-encapsulation. The preparation method comprises the following steps: obtaining resonant frequency of the acoustic surface wave atomizer through formula I; placing a core material emulsion on the acoustic surface wave device, staring a pump to operate, charging hot water from a hot water inlet and discharging the hot water from a hot water outlet, starting the acoustic surface wave atomizer to work, producing atomized particles of the core material emulsion, and moving the particles in an internal tube toward the direction where the pump is positioned; and introducing the atomized particles of the core material emulsion into a flocculant, carrying out reaction, and completing the micro-encapsulation process. The method is used for atomizing the core material emulsion through the acoustic surface wave atomizer and forming a great number of core material emulsion particles once. The method can also obtain microcapsules with various particle sizes by changing the resonant frequency of the SAW atomizer; the minimal particle size of the microcapsules produced by the method reaches 50 mu m; and the method greatly improves the speed of producing the core material emulsion particles and the efficiency of producing the microcapsules.
Owner:SHANGHAI JIAO TONG UNIV
Optical composition
InactiveUS20150144839A1Risk minimizationIncrease flexibilityNon-macromolecular adhesive additivesLaminationOptical propertyChemical composition
An optical composition is provided, comprising: —a polysilsesquioxane comprising repeating units of the formula [R—SiO1.5], wherein each R independently is hydrogen or a C1-C12 alkyl, aryl, alkene, arylene, alkenyl or alkoxy; —a polysiloxane, optionally substituted; and —particles dispersed in said polysiloxane. The polysilsesquioxane is able to disperse the particles in the polysiloxane, thus providing an optical composition comprising stably dispersed particles. The particles may be utilized to tune the refractive index or another optical property of the composition. Due to the low organics content, the composition has reduced risk of yellowing. The invention also relates to a bonding layer comprising an optical composition, an optical system comprising an optical composition, a method for preparing an optical composition and an optical system, respectively, and the use of a polysilsesquioxane for dispersing particles in a polysiloxane material.
Owner:LUMILEDS
Method and a device for preparing nano-coated oil displacement agent by adopting micro-flow field reaction technology
The invention belongs to the field of nano-coated oil displacement agent synthesis, and discloses a method and a device for preparing a nano-coated oil displacement agent by adopting a micro-flow field reaction technology. The preparation method comprises the following steps: (1) dissolving calcium chloride in ethanol, mixing with a coating material, and completely volatilizing ethanol to obtain an optimized coating material; (2) respectively dissolving an oil-displacing agent and the optimized coating material obtained in the step (1) with a solvent to obtain a first reaction solution and a second reaction solution, wherein a dispersing agent is used as a third reaction solution; (3) respectively and simultaneously introducing the first reaction liquid and the second reaction liquid intoa shearing device in a micro-channel reaction device for mixing; (4) while the step (3) is carried out, respectively and simultaneously introducing the effluent of the shearing device and the third reaction liquid into a micro-mixer for mixing, and introducing the mixed effluent into a microstructure reactor in a micro-channel reaction device for reaction to obtain an effluent, namely the nano-coated oil displacement agent. The particle size of the nano-coated oil displacement agent is 1-100 nm.
Owner:NANJING UNIV OF TECH
Enzyme-linked immunosorbent assay (ELISA) detection kit for detecting ractopamine as well as preparation method and application of detection kit
ActiveCN104655848AThe synthesis steps are simpleParticle stabilizationMaterial analysisStandard curveImmuno detection
The invention discloses an enzyme-linked immunosorbent assay (ELISA) detection kit for detecting ractopamine as well as a preparation method and the application of the detection kit. The detection kit is characterized in that Fe3O4@beta-CD is taken as a capture probe, and a compound of colloidal platinum particles and polymerase chelate PV is taken as a signal probe; the preparation method of the detection kit comprises the steps of preparing Fe3O4-NH2; preparing the capture probe Fe3O4@beta-CD; preparing PtNPs; preparing a PtNPs / PV signal label; and preparing an immune complex. The application comprises the following steps: feeding 50mu L of liquid A and 50mu L of liquid B of diaminobenzidine (DAB) into the obtained immune complex; carrying out light-avoiding incubation for 15-30 minutes; measuring the absorbance of the obtained DAB developed product by a microplate reader; drawing a standard curve according to the relation between corresponding light absorption values and concentrations of the ractopamine; and determining the concentration of the ractopamine in a sample to be tested according to the standard curve. The detection kit has the advantages of being high in sensitivity, selectivity and accuracy as well as rapid in detection speed.
Owner:NINGBO UNIV
Preparation method of epinastine hydrochloride fine granule
ActiveCN105708807AIncrease dosageMask bitternessPharmaceutical non-active ingredientsGranular deliveryEpinastine HydrochloridePrill
The invention discloses a preparation method of an epinastine hydrochloride fine granule. According to the preparation method, a composite flavoring agent is prepared from aspartame, sucralose, and glycyrrhizic acid monoammonium S at a mass ratio of 8:1:1, a sweet filler is taken as an assistant agent, and synergistic effect is achieved via adding an appropriate amount of an essence, so that the bitter taste of epinastine hydrochloride is covered effectively, and patient drug compliance is improved. According to the preparation method, problems that epinastine hydrochloride fine granule particle size distribution range is relatively wide, and much particle fine powder is generated are solved effectively via controlling on parameters such as adhesive aqueous solution concentration, fluidized bed temperature, and drying time, and stable and uniform granules are obtained. The auxiliary materials of the preparation method are cheap and easily available; preparation is simple; no special equipment is needed; production cycle is short; cost is low; and the preparation method is suitable for industrialized production.
Owner:重庆瑞泊莱制药有限公司
Resource utilization method by using biological power plant waste
InactiveCN110615712AImprove physical propertiesImprove stress resistanceAgriculture tools and machinesOther chemical processesRoot systemScrap
The invention discloses a resource utilization method by using biological power plant waste, and relates to the technical field of biological power plant waste utilization. The biological power plantwaste is processed into a soil improvement agent, wherein the soil improvement agent comprises the following components in parts by weight: 15-25 parts of animal manure, 10-15 parts of straw, 3-4 parts of zeolite, 5-6 parts of bentonite, and 2-3 parts of vermiculite, the pH value being adjusted to 6.0-6.5. The method has the following advantages: through mutual cooperation of the animal waste, theplant straw, the bentonite, the zeolite and the vermiculite system, the toxic action of heavy metals can be effectively inhibited, the effectiveness of trace elements in soil is improved, the nutritional environment of crop roots is improved, the soil structure and the water retention property are effectively improved, and the continuity of the soil improvement effect of the soil conditioner is guaranteed.
Owner:正大农业科技(浙江)有限公司
Laboratory bacterium immobilization method
InactiveCN106834264AOvercome artificialityAdjustable sizeMicroorganism based processesOn/in organic carrierContinuous fermentationParticle stability
The invention discloses a laboratory bacterium immobilization method. The method solves the problem that the existing method has a low embedding amount of bacteria, causes poor bacterium immobilized particle stability and utilizes a continuous reaction system difficult to be operated for a long time. The method comprises 1, culturing bacteria to obtain a bacterium liquid, 2, centrifuging the bacterium liquid to obtain immobilized bacteria, 3, dispersing the bacteria through physiological saline, adding a polyvinyl alcohol solution into the dispersion liquid and carrying out mixing to obtain a PVA-bacterium mixed solution, 4, carrying out immobilization through a bacterium immobilization reactor to obtain bacterium immobilized particles, and 5, putting the bacterium immobilized particles into ice water and carrying out standing. The method significantly improves the bacterium embedding amount of the immobilized particles to 15 to 20 g / L, can be well molded, is not broken and does not produce bonding. The immobilized particles have good stability. When the bacterium immobilized particles are used in a continuous fermentation system, the system is stable for at least 2 months. The method is used for bacterium immobilization.
Owner:SHENZHEN UNIV
Method for detecting void of coarse aggregate
ActiveCN101614646ACoarse aggregate particle stabilizationParticle stabilizationPreparing sample for investigationSpecific gravity measurementWater volumeAsphalt
Owner:SHENZHEN MUNICIPAL ENG +1
Viscoelastic surfactant type sand-carrying fluid and processing technology thereof
ActiveCN111892921AIncreased hydrodynamic volumeHigh apparent viscosityFluid removalDrilling compositionBetaineActive agent
The invention discloses a viscoelastic surfactant type sand-carrying fluid which is prepared by the following steps: reacting xanthan gum with a hydrophobic cation bond etherification reagent, and forming a reversible network structure from the modified xanthan gum through electrostatic interaction and hydrophobic association, thereby greatly enhancing the apparent viscosity and the grid structureof the modified xanthan gum; synthesizing a betaine ampholytic surfactant by taking a rosin derivative as a raw material, and carrying out combined copolymerization on the betaine ampholytic surfactant, acrylamide, acrylic acid and N, N-diallyl oleamide to obtain a modified surfactant; using the silane coupling agent for grafting positively charged amino on the surface of the porous ceramic, using succinic anhydride for ring opening to convert the amino into negatively charged carboxyl, and the rock and the propping agent are negatively charged and are subjected to electrostatic repulsion sothat the modified propping agent mixture is better dispersed in the sand-carrying fluid, and the fracturing effect is greatly improved. Reaction conditions are mild, raw materials are cheap, a synthetic route is simple, and sand carrying capacity, salt resistance, temperature resistance and shearing resistance are greatly improved.
Owner:DONGYING DONGFANG CHEM IND
High-internal-phase switching emulsion with stable particles, preparation method and particle recovery method
ActiveCN113398836AEasy to recycleEnhanced mechanical film strengthTransportation and packagingMixingActive agentPhysical chemistry
The invention discloses a high-internal-phase switching emulsion with stable particles, a preparation method, application and a particle recovery method. The high-internal-phase switching emulsion with stable particles comprises a dynamic covalent bond surfactant, an oil phase, particles and alkali liquor, wherein the particles and the dynamic covalent bond surfactant generate an electrostatic repulsion effect. The dynamic covalent bond surfactant, the particles and the alkali liquor form an aqueous phase, the proportion of the aqueous phase is 18-25 wt%, the proportion of the oil phase is 75-82 wt%, and the pH value of the high internal phase switch emulsion with the stable particles is larger than or equal to 12. The stable-particle high-internal-phase switch emulsion has good stability, can realize rapid demulsification when the pH value is adjusted to be less than or equal to 4.5, and is beneficial to particle recovery.
Owner:SOUTHWEST PETROLEUM UNIV
Novel external pressure circulatory assist
PendingCN109771244ALower blood pressureGuaranteed service lifePhysical therapySolenoid valveGas compressor
The invention discloses a novel external pressure circulatory assist. The external pressure circulatory assist comprises shank airbags, thigh airbags and hip airbags. The airbags are communicated withan air storage tank and an air compressor through solenoid valves, the air storage tank is communicated with an electric pressure regulating valve and a muffler, the airbags are further communicatedwith a negative pressure tank through solenoid valves, and the negative pressure tank is communicated with the air compressor. The external pressure circulatory assist has the advantages of being highin stability and long in service life.
Owner:广州市忆典医疗器械有限公司
Preparation method of antibacterial and mildew-proof luminous decorative coating
InactiveCN110218490AGood biocompatibilityPromote degradationAntifouling/underwater paintsLuminescent paintsCell membraneSulfide
The invention relates to a preparation method of an antibacterial and mildew-proof luminous decorative coating, and belongs to the technical field of coatings. The invention adopts a chemical reduction method, takes sodium borohydride as a reducing agent and chitosan as a stabilizer to prepare a chitosan nanometer silver solution, wherein nanometer silver can bind to phosphides and sulfides on a bacterial cell membrane; nanometer silver entering the cell membrane can react with sulfides or phosphides of protein and DNA in the cell, block the function of enzymes and replication and transcription of DNA in the cell. A large amount of hydroxyl and amino groups exist in the molecular chain of chitosan and can interact with nanometer silver, stabilize nanometer silver nanoparticles and improvethe antibacterial property. A silane coupling agent is adopted to modify the surface of the silver-loaded chitosan, which has good affinity. The invention combines the antibacterial performance of nano titanium dioxide and silver-loaded chitosan, and the antibacterial and mildew inhibitor has photocatalytic activity under daily illumination conditions, so that the prepared luminous decorative coating has good antibacterial and mildew-proof effect and photocatalytic activity.
Owner:陈玲玲
Application of Phage Chip as Protein Chip or Gene Chip
InactiveCN101059515BParticle stabilizationAvoid degradationMicrobiological testing/measurementAntigen epitopeAntigen
Owner:XI AN JIAOTONG UNIV
Granular heat-not-burn tobacco product and preparation method thereof
PendingCN112137162ASimple designRealize multifunctional applicationCigar manufactureCigarette manufactureProcess engineeringTobacco product
The invention belongs to the technical field of novel tobacco products, and particularly relates to a granular heat-not-burn tobacco product and a preparation method thereof. The tobacco product comprises a tobacco paper tube, a particle section and a filter tip section are arranged in the tobacco paper tube, and the particle section comprises a first particle section, a second particle section and a third particle section; the method comprises the specific steps of (1) preparation of a particle section and (2) preparation of the cigarette; the cigarette is simpler in design and is only composed of two sections, and the aroma production section and the cooling section are integrally formed without compounding and twisting connection.
Owner:YUNNAN YANGRUI TECH GRP
Method for preparing solid particle emulsifier by compounding random copolymer with homopolymer
The invention relates to a method for preparing a solid particle emulsifier by compounding a random copolymer with a homopolymer. The method comprises the following steps: 1, synthesizing an amphiphilic random copolymer; 2, synthesizing a hydrophobic homopolymer; and 3, respectively adding the amphiphilic random copolymer and the hydrophobic homopolymer into a cosolvent, adding a precipitation agent to self-assemble in order to form micelles with uniform size, and freezing the micelles in a large amount of deionized water. The particles of the assembled micelles prepared in the invention are stable, and have small particle size of 30-200[mu]m. The micelles have a good emulsifying effect as a particle emulsifier.
Owner:JIANGNAN UNIV
An electrically heated planar cathode
ActiveCN104272423AAvoid distortionParticle stabilizationX-ray tube electrodesCathode ray concentrating/focusing/directingX-rayCopper
An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is mounted to an aluminum nitride substrate in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern. The spiral pattern can be optimized for electrical, thermal, and emission characteristics.
Owner:THERMO SCI PORTABLE ANALYTICAL INSTR INC
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