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98results about How to "The preparation device is simple" patented technology
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Preparation device and preparation method of cellulose-based fiber membrane with nanostructure
InactiveCN102277689ASmall fiber sizeHigh porosityFilament/thread formingNon-woven fabricsPorosityCellulose
The invention relates to a preparation device and method of a cellulose fiber film with a nanometer structure. The device includes a rotatable slide table, and the liquid supply injection pump is arranged on the slide table. When the slide table rotates, the liquid supply injection pump moves along the slide table. The liquid supply injection pump is fixedly connected to at least one spinneret, and the spinneret There is a rotary receiving device in front of the head, the spinneret and the rotary receiving device are connected to a high-voltage power supply, and the rotating shafts of the slide table and the rotary receiving device are connected to a motor and a speed controller. The method is as follows: dissolving the cellulose polymer with a solvent to obtain a polymer solution with uniform properties; inputting the polymer solution to a spinneret at a constant flow rate for electrospinning to obtain cellulose with a nanostructure fibrous membrane. The cellulose fiber membrane with nanometer structure prepared by the invention has the advantages of small fiber size, high porosity, large specific surface area, good fiber uniformity and the like.
Owner:DONGHUA UNIV
Platinum (Pt)/reduced graphite oxide (RGO) nano composite material and preparation method and application thereof
ActiveCN102751101ACheap and easy to getImprove securityElectrolytic capacitorsCapacitanceGraphene nanocomposites
The invention discloses a platinum (Pt) / reduced graphite oxide (RGO) nano composite material and a preparation method and application thereof. According to the preparation method, graphite oxide (GO) and a platinum metal precursor are reduced in one step by radiation and induction of a gamma ray or an electronic beam, thus obtaining the Pt / RGO nano composite material with the Pt load capacity being 1.0wt% to 15wt%; Pt nano particles are uniformly distributed on an RGO sheet layer, and the average diameter of the Pt nano particles is 1.8 nanometers; and the particle sizes of the Pt nano particles are within 2 nanometers. By virtue of the load capacity of the nano particles of platinum metal, the reducing degree of the GO can be increased, the conductivity of a product is improved, and the surface utilization rate of the RGO sheet layer is increased. Compared with the GO and pure graphene, the nano composite material prepared by the method has higher specific capacitance and higher high-current multiplying power when being applied to a super-capacitor electrode material.
Owner:PEKING UNIV
MoSxOy/carbon nanometer composite material, and preparation method and application thereof
ActiveCN107010670AImprove conductivityIncrease the number of active sitesPositive electrodesNano-carbonPtru catalystCarbon nanocomposite
Owner:PEKING UNIV
Preparation of micro-nano lens array with adjustable light transmittance ratio
InactiveCN101481082AUniform sizeLow costSemi-permeable membranesPrecision positioning equipmentMicro nanoMicrosphere
The invention provides a method for preparing a microlens array with adjustable light transmittance. The microlens array is formed by arranging polymer scattering liquid crystal microspheres, wherein the polymer is polystyrene (PS), polycarbonate (PC), polymethylmethacrylate (PMMA), dimethyl silicone polymer (PDMS), NOA65 or NOA81; the liquid crystal is E7, E8, 5CB, 6CB, 7CB or a mixed liquid crystal of the liquid crystals and a light responding low molecule liquid crystal with azobenzol functional group, and the light responding low molecule liquid crystal can be BMAB, BHAB or BHMB. The preparation method comprises the following steps: mixing the polymer or the prepolymer of the polymer and liquid crystal to form a homogeneous solution, leading a polymer solution containing liquid crystal and a polyvinyl alcohol solution to a microflow control device so as to obtain the polymer solution drops containing liquid crystal, solidifying drops to obtain the polymer scattering liquid crystal microspheres, and forming the microlens array with an adjustable light transmittance by the microspheres.
Owner:SOUTHEAST UNIV
Device and process for regenerating active carbon
ActiveCN102652916AEfficient regenerationHigh degree of regenerationOther chemical processesCombustible gas purificationActivated carbonEnvironmental engineering
The invention relates to a device and a process for regenerating active carbon. The device comprises a reaction chamber and an aeration chamber, wherein the aeration chamber is arranged at the bottom of the reaction chamber; the reaction chamber and the aeration chamber are separated from each other by a water distribution plate; an external power source is arranged outside the reaction chamber, and connected to an anode and a cathode both mounted inside the device; the anode and the cathode are mounted on the two sides of the reaction chamber; an electrolyte inlet, a polluted water inlet and an aeration inlet are formed on the bottom of the aeration chamber; an aeration pipe is arranged in the aeration chamber, and connected to an ozone generating device through a gas pipe; and an electrolyte is filled in the aeration chamber via the electrolyte inlet, flows through the reaction chamber and then flows out via a water outlet formed at the top of the reaction chamber. Compared with the prior art, a method of combining an electrochemical process with ozone for regeneration is adopted in the invention, so that the regeneration efficiency of the active carbon is improved, and the device is relatively simple.
Owner:NANJING UNIV OF TECH
MoS<x>/carbon black nanometer composite material and preparation method and application thereof
ActiveCN106960948AImprove conductivityReduce aggregationCell electrodesFinal product manufactureNanometreNanotechnology
Owner:PEKING UNIV
Method for preparing hollow polymer microcapsules based on millifluidics device
InactiveCN102553500ASimple methodThe preparation device is simpleMicroballoon preparationMicrocapsule preparationBoiling pointEvaporation
The invention discloses a method for preparing hollow polymer microcapsules based on a millifluidics device. The method provided by the invention is characterized by comprising the following steps of dissolving a polymer in a low-boiling point solvent to obtain an intermediate phase solution, selecting insoluble solutions having matched density as an internal phase solution and an external phase solution, carrying out shearing of the intermediate phase solution, the internal phase solution and the external phase solution twice by a millifluidics double-T line channel to obtain a double micro-emulsion, and carrying out rotary evaporation of the collected double micro-emulsion to remove the intermediate phase solution and to obtain the hollow polymer microcapsules. Compared with the traditional microcapsules, the hollow polymer microcapsules obtained by the method have the advantages microcapsule walls are thick; sizes can be controlled by a three-phase flow meter; surfaces are smooth; monodispersity is good; and a yield is high.
Owner:SOUTHEAST UNIV
Preparation method and preparation device of cationic electromigration imidazoline concrete reinforcing bar corrosion inhibitor
ActiveCN102924378ALow labor intensity of technical constructionLow costOrganic chemistryEpoxySodium chloroacetate
The invention discloses a preparation method of a cationic electromigration imidazoline concrete reinforcing bar corrosion inhibitor, which comprises the following steps: (1) synthesizing imidazoline from C5-C18 fatty acid and diethylenetriamine; and (2) carrying out cationization reaction on the imidazoline and quaternizing reagent (comprising sodium monochloroacetate, epoxy chloropropane, epoxyethane, chloroacetic acid ethanol ammonium salt, sodium 3-chloro-2-hydroxypropyl sulfonate and the like) in a mol ratio of 1:(1.0-1.2) at 70-90 DEG C under the condition of the pH value 3-4 for 6-8 hours, thereby obtaining the cationic electromigration imidazoline concrete reinforcing bar corrosion inhibitor. The cationic electromigration imidazoline concrete reinforcing bar corrosion inhibitor can be used for reinforcing bar restoration in new concrete structures and built concrete structures. The restoration belongs to nondestructive restoration, and has the advantages of high migration rate and environment friendliness.
Owner:SOUTH CHINA UNIV OF TECH
Process for preparing orienting-reinforced aluminum ¿Cbased composite material
The present invention relates to preparation process of directional enhanced aluminum-base composite material. The process includes the following steps: mixing metal powder, short fiber ceramic phase and PVA solution to obtain composite material slurry; directionally extruding the composite material slurry in some mold to prepare short fiber ceramic phase directionally enhanced aluminum-base composite material wire; stoving, superposing in the length direction and pressure forming to form aluminum-base composite material block; and final sintering in hydrogen or argon atmosphere or in a vacuum sintering furnace to obtain short ceramic fiber directional enhanced aluminum-base composite material. The composite material has wide ceramic phase content range, less interface reaction to the aluminum alloy base, high directional degree and other advantages.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method for subject-object self-repairing transparent film
The invention discloses a preparation method for a subject-object self-repairing transparent film. The method comprises the following steps: 1) modifying beta cyclodextrin with an amido bond on a branch of branched polyethyleneimine and modifying adamantane with the amido bond on the branch of polyacrylic acid, thereby acquiring the branched polyethyleneimine modified with beta cyclodextrin and the polyacrylic acid modified with adamantine, and 2) repeatedly depositing the branched polyethyleneimine modified with beta cyclodextrin and the polyacrylic acid modified with adamantine in turn on a substrate, thus obtaining the subject-object self-repairing transparent film. The method provided by the invention is simple and effective, the operation is simple and convenient and the required time is short.
Owner:SOUTHEAST UNIV
Process for preparing ammonia synthesis catalyst
InactiveCN1385238AThe preparation device is simpleEasy to obtain preparation equipmentMetal/metal-oxides/metal-hydroxide catalystsActivated carbonActive carbon
The preparation method of catalyst for synthesizing ammonia includes the following steps: firstly, using ruthenium trifluoride solution with a certain concentration and adopting conventional wte impregnation method or coating method to impregnate the dried commercial active carbon carrier; drying at 30-120 deg.c; using dilute reducing agent solution to make reduction; using dilute alkaline solution to wash and using pure water to wash, drying at 30-120 deg.c; using conventional wet impregnation method or coating method to impregnate alkaline soil, rare earth or alkali metal solution as adjuvant; finally drying at 30-120 deg.c. As compared with catalyst prepared by hydrogen reduction process the activity of said invented catalyst can be raised by 5-30%.
Owner:FUZHOU UNIVERSITY
Composite nano-fiber PM2.5 filtering material and preparation method thereof
ActiveCN106925033AEvenly distributedHigh porosityDispersed particle filtrationMembrane filtersCross-linkFiber
The invention discloses a composite nano-fiber PM2.5 filtering material and a preparation method thereof. The material comprises a polyacrylonitrile and gelatin cross-linked composite nano-fiber film. An air filtering material provided by the invention with a polyacrylonitrile and gelatin composite nano-fiber netted cross-linked structure is acquired through the disposable electrostatic spinning and heating after-treatment. The diameter of the polyacrylonitrile and gelatin composite nano-fiber is 150-300nm, the porosity is 80%-90% and the average pore size is 0.5um-6um. The composite nano-fiber with compact structure, uniform netted cross-linking and better mechanical property and hydrophilic air permeability can be acquired; the filtering efficiency thereof for the NaCI aerosol with the median diameter of 200-300nm is 99.82%-99.91%; the pressure drop is 120-150Pa; the breaking strength is 10.92mPa; the elongation at break is 89.85%; the air permeability is 16820mL / (cm<2>.h). The material is especially suitable for the fields of personal protection products, air quality detecting equipment, air purifying equipment, and the like.
Owner:SHAANXI UNIV OF SCI & TECH
Leather care agent as well as preparation method and preparation device thereof
InactiveCN102492789AImprove permeabilityImprove breathabilityLeather impregnationOrganic acidOrganic base
The invention relates to the field of leather, and particularly relates to a leather care agent as well as a preparation method and a preparation device thereof. The leather care agent is prepared from the following raw materials in parts by weight: 10-100 parts of lactate, 1-100 parts of animal oil, 5-100 parts of surfactant, 5-200 parts of organosilicone material, 1-10 parts of organic base, 1-5 parts of organic acid and 1-250 parts of water through mixing. According to the leather care agent as well as the preparation method and the preparation device thereof, provided by the invention, the penetrability of the care agent can be improved.
Owner:BEIJING FANBO CHEM
Set of a self-supporting mosaic of an automotive vehicle and at least one body panel, set of at least two self-supporting mosaics and body panel
InactiveCN101511665AThe preparation device is simpleReduce maintenance costsSuperstructure subunitsSuperstructure connectionsMobile vehicleThermoforming
The invention relates to a set of a self-supporting mosaic (10) intended to serve as bumper skin for an automotive vehicle and at least one body panel (30, 32). The self-supporting is equipped with attachments to the vehicle's blank body. The mosaiccomprises at least one part (16) intended to remain visible once the self-supporting mosaicis mounted on the vehicle and is part of the bumper skin, at least one receiving area (22, 24) for the body panel (30, 32) and means (34, 36, 46) for attaching the body panel (30, 32) to this receiving area. The body panel constitutes another part of the bumper skin. The body panel itself is produced by cutting or thermoforming. The invention also relates to a set of at least two self-supporting mosaics as well as a body panel (30, 32) intended for the set.
Owner:CO PLASTIC OMNIUM
Method for preparing bromophenol
InactiveCN101265164AImprove conversion rateLarge specific surface areaOrganic chemistryOrganic compound preparationBromineHeteropoly acid
The invention discloses a method of preparing bromophenol. The method comprises the following steps: supported heteropoly acid is used as a catalyst, potassium bromide is used as bromo source, and peroxide is used as oxidizer to bromize phenol, and then neutralization, washing, extraction, and drying are performed in sequence to obtain the bromophenol. The supported heteropoly acid is formed by carriers which load heteropoly acid, wherein, the grain diameter of the carriers ranges from 75 to 800 micrometres, and the weight of the heteropoly acid ranges from 1 to 50 percent. In the method, the phenol percent conversion is high, and the selectivity of contraposition phenol bromo-compounds is high; the adopted catalyst has simple preparation, high reactivity and wide loading range, is easy to process after the reaction, can be used repeatedly, and has wide application prospect.
Owner:LIAOCHENG UNIV
Beta-dextran detection method based on fluorescence enhancement principle
InactiveCN105842208AStrong fluorescence enhancement abilityHigh sensitivityFluorescence/phosphorescencePhotonicsDextran
The invention discloses a method for detecting β-glucan based on the principle of fluorescence enhancement. The treated silicon wafer is used as the substrate, and titanium dioxide and graphene oxide hydrogel are deposited on the silicon wafer in combination with spin-coating technology to prepare titanium dioxide / Graphene oxide hydrogel one-dimensional photonic crystal, and gold-plated on the photonic crystal by vacuum evaporation method, prepared gold-plated titanium dioxide / graphene oxide hydrogel one-dimensional photonic crystal, and used this photonic crystal as a fluorescence-enhanced Substrate, a method for detecting β-glucan by detecting the fluorescence intensity of the fluorescent complex product specifically combined with aniline blue. The present invention uses gold-plated titanium dioxide / graphene oxide hydrogel one-dimensional photonic crystals as the base, and combines the fluorescence enhancement effects of gold nanoparticles and photonic crystals to cause greater fluorescence enhancement, thereby improving the sensitivity of fluorescence detection. The method is simple and effective, the operation is convenient and the required time is short.
Owner:SOUTHEAST UNIV
Preparation method of ultralong silver nanowires
ActiveCN106541146AImprove photoelectric propertiesThe preparation device is simpleTransportation and packagingMetal-working apparatusTransmittanceSilver chloride
The invention discloses a preparation method of ultralong silver nanowires. The preparation method is characterized in that dodecyl trimethyl ammonium chloride and FeCl3 are introduced into a reaction system, and the shape and the size of a silver chloride crystal nucleus are controlled, so as to guide the one-dimensional growth of the ultralong silver nanowires. The preparation method is simple in preparation devices, few in steps, low in temperature, and simple and convenient to operate; the whole preparation process is carried out under normal pressure and atmosphere environment; the ultralong silver nanowires of which the average length is 90-120 microns and the average diameter is 90 to 120nm can be obtained by one-step reaction; a transparent conductive film prepared based on the ultralong silver nanowires is outstanding in electrical and optical characteristics; the transmittance under the wavelength of 550nm can reach 91.3%, and the square resistance is up to 8.6 ohms per square.
Owner:CHANGZHOU HUAWEI ADVANCED MATERIAL
Electrostatic spinning nano-composite fiber mat and preparation method and application thereof
ActiveCN107675361AImprove the defect of poor UV resistanceImprove high temperature resistanceElectroconductive/antistatic filament manufactureMonocomponent cellulose artificial filamentCelluloseBreaking strength
The invention relates to the field of composite materials, in particular to an electrostatic spinning nano-composite fiber mat and a preparation method and application thereof. The preparation methodcomprises the steps that graphene, SiO2 and TiO2 are dissolved in a dimethylacetamide solution and then subjected to ultrasonic dispersion, and a mixed solution is obtained; the mixed solution is added into a polysulfonamide solution and stirred, and a polysulfonamide spinning solution is obtained after ultrasonic dispersion; a natural cellulose / LiCl / DMAC spinning solution and the polysulfonamidespinning solution are subjected to ultrasonic oscillation and mixed, and a spinning nanometer fiber mat is obtained; a PPS fiber non-woven fabric and the nanometer fiber mat are composited through theelectrostatic spinning technology, and the electrostatic spinning nano-composite fiber mat is obtained. The electrical conductivity, the breaking strength and the ultraviolet ray-resistant capacity of the composite fiber mat are remarkably improved, the comprehensive performance of the fiber is greatly improved, and the application field of the composite fiber mat is widened.
Owner:SHANGHAI UNIV OF ENG SCI
Polymer microsphere encoded by nano-gold and method for preparing same
The invention discloses a polymer microsphere encoded by nano-gold and method for preparation, which comprises nano gold particles and ethylene polymer, the ethylene polymer can be polyphenylacetylene, or polymethyl methacryate, of polyacrylonitrile, or polyethylene, or polypropylene, or polyethyl acrylate. The preparation method comprises dissolving the ethylene polymer in organic solvent, forming ethylene polymer solution, dropping into polyvinyl alcohol solution through a droplet formation apparatus, finally volatilizing the organic solvent to obtain the polymer microballoon.
Owner:SOUTHEAST UNIV
Preparation method of high-density metal azide with arbitrarily regulated filling density
ActiveCN110040701AIncrease packing densityPowerful detonationMetal azide explosive compositionsHydrazoic-acids/azides/halogen-azidesChemical reactionHigh density
The invention relates to a preparation method of a high-density metal azide with arbitrarily regulated filling density, and belongs to the field of initiating explosive devices. The preparation methodmixes hollow microspheres with different diameters constructed by nanoporous metal / metal oxide and fills a restraint shell with the hollow microspheres to prepare hollow microspheres constructed by the nanoporous metal / metal oxide with a little filling density in the restraint shell, and then places the restraint shell filled with the hollow microspheres constructed by the nanoporous metal / metaloxide in a reactor to be subjected to gas-solid in-situ chemical reaction with hydrazoic acid gas to prepare the metal azide with high filling density. The preparation method of the invention can prepare the high-density metal azide having a filling density of 50%-92% of theoretical density in the restraint shell. The prepared high-density metal azide (for example, the copper azide dose is more than or equal to 0.4 mg) in a single restraint shell can detonate HNS-IV, CL-20, PETN, RDX and other explosives with a filling density being 75%-92% of the theoretical density and a diameter being morethan or equal to 0.5 mm or ignite B / KNO3 and other ignition powder.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Technology method for obtaining high-strength silk fibers and preparation device for high-strength silk fibers
InactiveCN104790087AHigh strengthSimple processAnimal fibresLiquid/gas/vapor yarns/filaments treatmentTime rangePolyethylene glycol
A technology method for obtaining high-strength silk fibers includes the following steps that step1, according to coating treatment, silk threads obtained through throwing are coated by penetrating through a PEG bath box, and the coating temperature ranges from indoor temperature to 800 DEG C; step2, according to drawing and heat setting treatment, drawing and heat setting treatment is performed on the coated silk threads, the drawing ratio is 1.05-1.3, the drawing temperature ranges from indoor temperature to 1100 DEG C, the heat setting temperature ranges from 1500 DEG C to 2300 DEG C, and the heat setting time ranges from 0.5 second to 5 seconds; step3, according to cooling and collecting, the silk threads after drawing and heat setting are cooled at indoor temperature and then collected. The silk threads wound around a raw material thread wheel penetrate through the PEG bath box, and then are sequentially wound around a feeding rolling wheel, a heating rolling wheel and a collecting thread wheel, drawn by the feeding rolling wheel and the heating rolling wheel and collected on the collecting thread wheel through cooling after heat setting is performed through the heating rolling wheel. The device is simple in structure and suitable for industrial and large-scale production, and the high-strength silk threads can be obtained.
Owner:DING SHENG SILK
Preparation device and preparation method of metal semi-solid billets
The invention discloses a preparation device and preparation method of metal semi-solid billets, which belong to the field of metal materials and metallurgical technologies. The preparation device of metal semi-solid billets disclosed by the invention comprises a heating mechanism, a crucible and a lifting platform, wherein the heating mechanism comprises an alternating-current power supply and a heating coil, the heating coil is connected with the alternating-current power supply by a lead, and the heating coil comprises a first coil and a second coil; and the crucible is fixed on the lifting platform and arranged in the first coil and the second coil. The preparation method of metal semi-solid billets disclosed by the invention comprises a step of cyclic remelting treatment, and the cyclic remelting treatment mainly comprises the following steps: alternately closing the first coil and the second coil, controlling that the center temperature of a metal melt is in a semi-solid temperature range, and cyclically moving the crucible upwards and downwards. Through the adoption of the invention, pure and pollution-free metal semi-solid billets can be obtained; and the preparation device is simple in equipment and operation and low in cost, and widely applied to various alloy materials.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
Method for preparing polysulfonamide/nanometer TiO2 composition fiber by electrostatic spinning method
InactiveCN103184581AImprove the defect of poor UV resistanceStrong UV resistanceFilament/thread formingMonocomponent synthetic polymer artificial filamentFiberElectrospinning
The invention belongs to the technology of nano fiber preparation and particularly relates to a method for preparing polysulfonamide / nanometer TiO2 composition fiber by an electrostatic spinning method. The method comprises the following steps: firstly placing dry nano titanium dioxide into a N, N'-Dimethylacetamide, sealing and carrying out ultrasonic vibration; then dissolving mixed solution into spinning stock solution containing 10 to 15 wt percent, stirring, sealing and carrying out ultrasonic vibration; and then obliquely pouring the prepared polysulfonamide / nano titanium dioxide composite spinning solution into a static silk-spinning machine for static spinning. The added proportioning of the nano titanium dioxide, the N,N'-Dimethylacetamide and the spinning stock solution is 1 g to 12-9 ml to 100-900 g. The composite nano fiber prepared by the invention remarkably overcomes the defect that the uvioresistant performance of the polysulfonamide is poor, and the preparation device for the composition fiber is simple, low in cost and strong in adjustment and control of the preparation technology.
Owner:SHANGHAI UNIV OF ENG SCI
Bamboo joint/coated non-noble metal SO2 electrochemical oxidation catalyst as well as preparation method and application thereof
ActiveCN108654676AThe preparation device is simpleEase of mass productionMolecular sieve catalystsCell electrodesCarbonizationRaw material
The invention provides a bamboo joint / coated non-noble metal SO2 electrochemical oxidation catalyst as well as a preparation method and application thereof. According to the preparation method, precursors are combined by a constant-temperature chelating reaction; a porous molecular sieve template is filled with the Fe, N and C precursors; carbonization treatment is carried out to form an active site and an active component; the template is removed to obtain a carbon-based catalyst; secondary carbonization is carried out, so that the electrical conductivity, surface functional groups and the like of the catalyst is modulated to obtain the non-noble metal SO2 electrochemical oxidation catalyst with a bamboo-like / coated structure. The catalyst is cheap and available in raw materials, simple in preparation device and likely to realize mass production. The catalyst provided by the invention is a non-noble metal catalyst, has a relatively high specific surface area, a large pore volume and atypical mesoporous structure, is capable of providing more catalytic active sites and is beneficial to mass transfer. The catalyst has SO2 electrochemical oxidation capacity equivalent to that of Pt / C in a high potential region and has an important application value and use prospect for researches in the fields of SO2 electrochemical oxidation and desulfuration.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
PCL-PLGA slow-release preparation and preparation method thereof
InactiveCN107737119AGood biocompatibilityEasy to filmElectro-spinningKetone active ingredientsBiocompatibility TestingSolvent
The invention discloses a PCL-PLGA slow-release preparation and a preparation method thereof. The preparation method comprises the following steps: dissolving an antitumor medicine and a PCL-PLGA copolymer in a spinning solvent, stretching a spinning solution into micro / nanofiber under the action of a high-voltage electric field by an electrostatic spinning technology, and receiving the micro / nanofiber on the surface of a fixed receiver to obtain the PCL-PLGA slow-release preparation. The slow-release preparation provided by the invention gives full play to excellent biocompatibility and fat solubility of a PLGA material, further solves the problems of low mechanical toughness and too short degradation cycle through PCL-PLGA copolymerization, and has the advantages of capabilities of prolonging the circulation time of a chemotherapeutic medicine in a body, improving the blood concentration at a tumor site and reducing adverse effects of the chemotherapeutic medicine, and the like.
Owner:HUAQIAO UNIVERSITY
Preparation method and preparation device for CIGS-based thin-film solar cell
InactiveCN105006501AImprove component uniformityEasy access to component distributionFinal product manufactureVacuum evaporation coatingSputteringVacuum chamber
The invention provides a preparation method and a preparation device for a CIGS-based thin-film solar cell. According to the invention, a light absorption layer of the CIGS-based thin-film solar cell is deposited by adopting double-target sputtering in a vacuum chamber, a plasma ablation area of a target 1 faces towards the direction of a substrate and a plasma ablation area of a target 2 faces towards the surface of the target 1 in the sputtering process, so that materials of the target 2 are deposited on the target 1, and then the materials of the targets 2 are deposited on the substrate together with materials of the target 1. The preparation method for the light absorption layer enables components of the deposited film to be more uniform.
Owner:厦门神科太阳能有限公司
Preparation method of metallic rubidium nano sol
The invention discloses a preparation method of metallic rubidium nano sol. The preparation method comprises the following steps of putting metallic rubidium into an organic solvent, deoxidizing the organic solvent, heating the deoxidized organic solvent in a protective gas protection environment to melt the metallic rubidium into a liquid state in the organic solvent, and crushing and dispersingthe metallic rubidium in the liquid state in the organic solvent by using ultrasonic waves in the protective gas protection environment to obtain the metallic rubidium nano sol. According to the preparation method of the metallic rubidium nano sol, the preparation process is simple so that the metallic rubidium nano sol can be rapidly prepared; and a preparation device is simple, so that storage,transfer and transportation of the metallic rubidium nano sol are facilitated.
Owner:HEBEI RUBIDIUM CESIUM TECH CO LTD
Multilayer hollow Nano fiber in use for cell culture, and preparation method
InactiveCN100463713CSimple methodControllable thicknessSemi-permeable membranesTissue/virus culture apparatusFiberCulture cell
A multi-layer hollow nanofiber used to culture cells is prepared through providing electrically spun fibers as template, alternatively adsorbing the polymers with positive and negative charges onto the surface of template, and using organic solvent to remove said template.
Owner:SOUTHEAST UNIV
Preparation method of self-repairing degradable C3N4/subject-object film
InactiveCN108659649AAchieve self-healingPromote degradationIndividual molecule manipulationCoatingsCentrifugationCarbon nitride
The invention discloses a preparation method of a self-repairing degradable C3N4 / subject-object film. The method comprises the following steps of: step I, adding carbon nitride (C3N4) powder into a branched polyethyleneimine-beta-cyclodextrin (PEI-beta CD) solution for ultrasonic treatment and centrifugation to form a clear milk-white carbon nitride-branched polyethyleneimine-beta-cyclodextrin (C3N4-PEI-beta CD) solution, and step II, performing alternated deposition on C3N4-PEI-beta CD and polyacrylic acid-adamantane (PAA-AD) on the surface of a substrate to form the PAA-AD / C3N4-PEI-beta CD self-repairing degradable subject-object film. The method is simple, effective, and easy and simple to operate, and the required lime is shorter.
Owner:NANTONG UNIVERSITY
Polyborazine ceramic precursor and preparation method thereof
The invention relates to a polyborazine ceramic precursor and a preparation method thereof. According to the invention, a solution polycondensation method is used and the preparation method comprises the following steps of: using boron-containing alkylogen and diamine as monomers; adding the boron-containing alkylogen and diamine into an organic solvent under an inert gas or nitrogen protection; and obtaining the precursor through a stepwise heating polycondensation at a temperature of -20-300 DEG C. According to the invention, polyborazine is white solid and has an excellent solubility in ethanol, acetone and other commonly used solvents; the skeletal structure of the precursor has a large number of active terminal groups so that the precursor can participate in curing processes of an epoxy resin and a benzoxazine resin, can be used for preparing the ceramic precursor and a high-performance composite material; and particularly, the polymer has higher oxidation-resistant and heat-resistant performance and a potential application prospect in ablation protection materials.
Owner:XI AN JIAOTONG UNIV
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