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34 results about "Polysol solution" patented technology
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HFC solution formulations containing an anticholinergic
An aerosol solution formulation comprising:(a) a salt of formula 1wherein X− is an anion(b) an HFC propellant;(c) a cosolvent; and(d) an inorganic or an organic acid, wherein the concentration of the acid is in a range that corresponds with a pH range of 2.5 to 5.5 in aqueous solution.
Owner:BOEHRINGER INGELHEIM INT GMBH
Silicone fine particles, method for preparing the same, and thermoplastic resin composition using the same
ActiveUS7897714B2Prepared in short amountEasy and cost-effectiveSynthetic resin layered productsCellulosic plastic layered productsPolymer chemistrySilicone
One aspect of the invention relates to a method of preparing silicone fine particles which comprises preparing a mixture comprising an organotrialkoxysilane and an organochlorosilane to give a concentration of the organochlorosilane in the mixture of about 100 to about 2,000 ppm; mixing the mixture with water to prepare a sol solution; and maintaining a pH value of the sol solution within a range of about 8 to about 11. Another aspect of the invention relates to a thermoplastic resin composition which employs the silicone fine particles as a diffuser.
Owner:LOTTE ADVANCED MATERIALS CO LTD
Method for preparing layered K2Ti4O9 continuous nanofiber
InactiveCN103060948AContinuous operationShort cycleInorganic material artificial filamentsFilament/thread formingFiberPolymer science
The invention is a method for preparing nanofiber, and in particular comprises: by using butyl titanate, KNO3, citric acid, ethanol and nitric acid as raw materials, wherein by molar ratio, butyl titanate: KNO3: Citric acid: ethanol: dilute nitric acid = 1:2:2: (38 ~ 50): (19 ~ 25), polyvinyl alcohol or polyvinyl pyrrolidone as a polymer template, and aqueous solution of polyvinyl alcohol as a solvent, preparing a sol solution at room temperature; then preparing composite fiber by using an electrostatic spinning method, wherein an electrostatic spinning voltage is controlled to be 10 ~ 30KV, and curing distance of the nozzle to the accept screen is 8 ~ 20cm; and then performing heat treatment to the composite fiber at 500 ~ 950 DEG C for 3 ~ 8h to obtain layered K2Ti4O9 continuous nanofiber. The method of the invention is simple in process, easy in operation, high in efficiency, low in energy consumption, and simple in production equipment; and the prepared fiber has high purity, good crystallinity, a large surface area, a large length-diameter ratio and good dispersion.
Owner:WUHAN UNIV OF TECH
Ultrasonic preparation method of gold/porous palladium core-shell structure nanoparticles
InactiveCN109865483ASimple processMild reaction conditionsMicroballoon preparationMicrocapsule preparationDispersitySynthesis methods
The invention discloses an ultrasonic preparation method of gold / porous palladium core-shell structure nanoparticles, which comprises the following steps: 1. heating a chloroauric acid aqueous solution until boiling under stirring, quickly adding a sodium citrate solution, keeping boiling for 15 minutes, and cooling to room temperature to obtain gold nanoparticle hydrosol; 2, dissolving palladiumchloride in a hydrochloric acid solution, and adding deionized water for dilution to prepare a chloropalladic acid; 3, adding a surfactant, the chloropalladic acid solution and an ascorbic acid solution into deionized water, and slowly dropwise adding the gold sol solution to obtain a mixed solution; 4, putting the mixed solution into a reaction kettle, and carrying out ultrasonic reaction for 0.5-2 hours to obtain particles; and cleaning and separating the particles to obtain the gold / porous palladium core-shell structure nanoparticles. The synthesis method provided by the invention is simpleand convenient to operate, and the obtained gold / porous palladium core-shell structure nanoparticles are good in dispersity and controllable in morphology and size.
Owner:NORTHWEST UNIV(CN)
Silicon-sol adhesive and preparing method
InactiveCN1243619CImprove room temperature strengthShorten drying timeFoundry mouldsFoundry coresPolymer scienceAdhesive
The present invention discloses a silicon sol adhesive modified by using high polymer and its preparation method. Its composition comprises alkaline silicon sol containing 20-30%, SiO2 and PVA whose content is less than [(32-100XSiO2%) / 320]X100%. Its preparation method includes: a. preparing PVA aqueous solution; b. preparing alkaline silicon sol solution; and c. mixing said two solution uniformly, in which after the alkaline silicon sol solution is prepared or after the two solutions are mixed uniformly its pH value must be regulated. Said silicon sol adhesive can accelerate drying speed when it is used in investment casting industry, and can raise the normal temp. strength of pattern shell in the investment casting, and can reduce retained strength.
Owner:ZHEJIANG YUDA CHEM IND
Allicin microcapsule and its preparation method
InactiveCN100367944CGood conditionGood effectOrganic active ingredientsDigestive systemOrganosolvStarch granule
Disclosed is an allicin microcapsule and its preparation method, wherein garlicin and starch are used as the core, hydrosol is used as the inner layer membrane, the grease collosol is an outer layer membrane structure, the garlicin, starch, hydrosol and grease collosol accmounts to 0.1-50%, 10-90% and 0.5-10% of the total product weight. The preparing process consists of attaching the garlicin onto the starch carrier, coating a layer of hydrosol solution onto the granule surface, forming an inner layer hydrosol covering film through drying and dehydration, than coating a layer of grease collosol solution, drying and removing organic solvent to form the outer layer collosol covering film.
Owner:OCEAN UNIV OF CHINA
A kind of water-based nano-ceramic composite coating and coating method thereof
ActiveCN106349926BSolve the real problemEasy to processPretreated surfacesAnti-corrosive paintsCeramic compositeNanoceramic
The invention discloses a preparation method of a water-based nano ceramic composite coating. The water-based nano ceramic composite coating is prepared from the following components in parts by mass: 5 to 15 percent of water-based acrylic polymer, 5 to 20 percent of silica sol solution, 23 to 40 percent of siloxane, 2 to 15 percent of alcohols, 10 to 15 percent of deionized water and a trace amount of metal oxide. The preparation method of the casing comprises the following steps: stirring at normal temperature and normal pressure for 20 to 60 minutes by a reactor, and generating reaction to form composite resin; then adding 10 to 40 percent of pigment and 0.1 to 5 percent of weak acid; stirring at the normal temperature and the normal pressure for 5 to 60 minutes and curing, thereby finishing the preparation of the coating.
Owner:国钛(福建)新材料有限公司
Silica gel integral open tubular capillary column taking metal wire as template and preparation method thereof
ActiveCN111617516AAdjustable thicknessOther chemical processesComponent separationSilicic acidPolyethylene glycol
The invention discloses a silica gel integral open tubular capillary column taking a metal wire as a template and a preparation method thereof. The preparation method comprises the steps: 1), introducing a metal wire into a first capillary to serve as the template, then filling the capillary with a sol solution, and then capping the two ends of the first capillary; (2) carrying out heat treatmenton the capillary tube, then carrying out temperature programming treatment, then removing the template, and then sequentially cleaning, drying and calcining the first capillary tube to prepare the silica gel integral open tubular capillary column; wherein the sol solution comprises polyethylene glycol, urea, tetramethyl orthosilicate and an acetic acid solution. According to the preparation method, silica gel in the open tubular capillary column can be uniformly distributed and is relatively thick, and meanwhile, the open tubular capillary column is not easy to block.
Owner:ANHUI NORMAL UNIV
Long-acting anti-fog silicon-based gel antifogging agent for lens and preparation method and application thereof
ActiveCN111518469AIncrease surface adsorptionUniform and rapid expansionCoatingsOptical partsPolyvinyl alcoholSilicic acid
The invention relates to a long-acting anti-fog silicon-based gel antifogging agent for a lens and a preparation method and application thereof. The antifogging agent is composed of a silicon-based sol solution and a long-chain polysaccharide / amino molecule crosslinking solution, the silicon-based sol solution comprises tetraethyl orthosilicate, cyclopentasiloxane, a polydimethylsiloxane crosslinking polymer and an organic solvent; the long-chain polysaccharide / amino molecule crosslinking solution comprises deionized water, polysaccharide molecules, polyvinyl alcohol, an amino molecule surfactant and a photocatalytic adhesive agent cerium oxide. Silica sol in the anti-fog sol is crosslinked with hydrophilic polysaccharide molecules and amino molecules to form a core-shell structure with arigid center and a soft long chain, water drops are enabled to evenly and rapidly expand whole surface through capillary action, and moisture absorption and antifogging effects are achieved; the long-chain polysaccharide / amino molecule is used as an end-capping reagent to inhibit the volatilization of a surfactant, cerium oxide is introduced to increase the surface adsorption force of silica sol,and the problem of poor light transmittance caused by poor adhesive force of an original water-based anti-fog coating film is solved.
Owner:SHANGHAI JIAO TONG UNIV
Preparation method of Au@SiO2 Core-shell nanoparticles
InactiveCN111069621AHigh SERS activitySimple methodMaterial nanotechnologyTransportation and packagingCore shell nanoparticlesPhysical chemistry
The invention discloses a preparation method of Au@SiO2 Core-shell nanoparticles. The preparation method comprises the following steps that chloroauric acid is dissolved in deionized water, and heating is conducted to boiling; trisodium citrate powder is added into the deionized water, and is stirred until complete dissolving, a mixture is rapidly added into a boiling chloroauric acid solution, stirring is conducted for 15-25 min under boiling, then a heat source is removed, cooling is conducted to a room temperature, and an Au sol solution is obtained; and APS is added to ethanol, then a mixture is added to the Au sol solution to be allowed to stand for 40-50 min, amido can be subjected to a complex reaction over the Au nanoparticles, then TEOS is added, slow stirring is conducted for 25-27 h until a core-shell structure is formed, and a prepared solution is kept at 4 DEG C to obtain finished products. The method is simple and convenient and easy to operate, and the prepared Au@SiO2 core-shell nanoparticles have strong SERS activity on rhodamine B, and can be used as best SERS active substrates for analysis, testing and like of samples.
Owner:HAIMEN YUANMEI MEISHU TUAN SHEJI CO LTD
A kind of preparation method of high-purity large particle size silica sol
ActiveCN111302347BLarge particlesLarge particle sizeSilicon compoundsSilicic acidPolyethylene glycol
The invention discloses a preparation method of high-purity large-particle-size silica sol, which belongs to the technical field of silica sol preparation. The specific preparation method comprises the following steps of mixing an acidic silica sol solution with a pH value of 2-3 with polyethylene glycol 2000-10000, adjusting the pH value to 8-9.5, and heating and boiling to obtain sol crystal grains, adding acid activated resin, washing the resin until the pH value is 3.0-4.5, adding an aluminum salt modifier and water glass, and carrying out ion exchange reaction on the water glass to obtainaluminum modified silicic acid, and adding aluminum modified silicic acid into the sol crystal grains, adding an alkaline solution to adjust the pH value to 9.5-10.5, synthesizing while performing ultrafiltration, and heating to synthesize the high-purity large-particle-size silica sol. The acidic silica sol is subjected to hydroxylation reaction, so that the gel is aggregated to form a large-particle silica sol matrix, the water glass is used as a raw material, the aluminum-modified active silicic acid is prepared by adopting an ion exchange method, ultrafiltration and synthesis are carriedout simultaneously, the particle size is increased quickly, the energy consumption is low, the synthesis period is short, the production efficiency is improved, and the polishing requirements of noveldevices in electronic industry can be met.
Owner:临沂市科翰硅制品有限公司
Nanogold confinement copper-based core-shell structure catalyst as well as preparation method and application thereof
ActiveCN113813973AImprove adsorption capacityInhibit aggregationOrganic compound preparationHydroxy compound preparationPtru catalystSodium sulfate
The invention relates to a nanogold confinement copper-based core-shell structure catalyst and a preparation method and application thereof, and the catalyst is composed of a Cu2C2-FexOy shell layer of 15 nm to 93 nm, a nanogold core of 12 nm to 55 nm and an extended PVP long chain. The method comprises the steps: adding the sodium citrate aqueous solution into a heated and boiled chloroauric acid aqueous solution, and carrying out reacting to obtain a gold sol solution; dissolving copper salt, ferric salt, lauryl sodium sulfate and PVP in deionized water completely, and adding the gold sol solution to obtain a mixed solution; then dropwise adding sodium hydroxide and a reducing agent solution into the mixed solution, washing and drying the obtained precipitate to obtain an Au-coated Cu2O-FexOy core-shell structure nano material, putting the core-shell structure nano material into an aqueous solution of polyformaldehyde and gamma-butyrolactone, exhausting air in a reaction bottle, switching to acetylene gas, and carrying out treating at an activation temperature; obtaining the Au-coated Cu2C2-FexOy catalyst after precipitate obtained through centrifugal separation is dried; in the catalytic reaction process, the electronic effect and the geometric effect of the catalyst can be improved, and the catalytic activity and the stability are improved.
Owner:SHANXI UNIV
Oil-resistant self-cleaning coating and preparation method thereof
ActiveCN113185874AReduce the amount of adsorptionReduce volumeGeneral water supply conservationMonocomponent synthetic polymer artificial filamentFiberCoated surface
The invention discloses an oil-resistant self-cleaning coating and a preparation method thereof, and relates to the technical field of new materials. The method comprises the following steps: performing ultrasonic treatment on an electrostatic spinning solution, performing secondary ultrasonic treatment on fibers sprayed from a syringe needle before reaching a negative electrode during electrostatic spinning, enabling the negative electrode to be an aluminum alloy plate during the electrostatic spinning, and directly generating the fibers on the aluminum alloy plate to form a crossed three-dimensional net-shaped coating, wherein water on the surface of the coating falls off to take away part of oil stains, and the rest oil stains fall off automatically, so that the self-cleaning effect is achieved; and soaking the aluminum alloy with the fibers prepared on the surface twice. The aluminum alloy is soaked in a foamed polyvinyl alcohol solution for a first time, the aluminum alloy is soaked in a polyvinyl alcohol silica sol solution for a second time and heated, the coating is firmly bonded to the surface of the aluminum alloy, and meanwhile the service life is prolonged.
Owner:ZHEJIANG YUTONG NEW MATERIAL
A kind of solid phase microextraction coating preparation method
ActiveCN109596398BReduce pollutionHigh mechanical strengthPreparing sample for investigationFiberPyrrolidinones
The invention discloses a method for preparing a solid-phase microextraction coating, which comprises the following steps: adding straw and biological enzymes to an aqueous ionic liquid solution, adding a mixed solution of acidic ionic liquid and DMSO after the reaction is completed, and heating to obtain a straw solution; Add graphite powder to the ionic liquid, ultrasonic pretreatment, add sulfuric acid and potassium permanganate, ultrasonic treatment again, introduce oxygen, centrifuge, wash and precipitate and dry to obtain graphene oxide, add it to the acidic ionic liquid, and then add 1‑methylimidazole, N‑picoline or pyrrolidone, heated to obtain graphene oxide derivatives; mixing and heating straw solution and graphene oxide derivatives to obtain sol solution; extracting fibers to form a rough surface, organic solvent After washing, ultrasonication and drying, it is immersed in a sol solution, then immersed in a polar solvent, and dried. The invention has the advantages of good biocompatibility, strong enrichment ability, stable extraction coating, long service life and the like.
Owner:JIANGSU UNIV OF SCI & TECH
Silica gel integral open-tube capillary column with metal wire as template and preparation method thereof
ActiveCN111617516BAdjustable thicknessOther chemical processesComponent separationSilicic acidPolyethylene glycol
The invention discloses a silica gel integral open-tube capillary column with a metal wire as a template and a preparation method thereof. The preparation method comprises: 1) introducing the metal wire into the first capillary as a template, and then filling the sol solution into the capillary , and then both ends of the first capillary are capped; 2) The capillary is heat-treated, and then the temperature is programmed, and then the template is removed, and then the first capillary is cleaned, dried and calcined in order to obtain a whole silica gel An open-tube capillary column; wherein, the sol solution includes polyethylene glycol, urea, methyl orthosilicate, and acetic acid solution. The preparation method can make the silica gel in the open-tube capillary column evenly and thickly distributed, and at the same time make the open-tube capillary column not easy to be blocked.
Owner:ANHUI NORMAL UNIV
A kind of silver composite iron oxide fiber and its preparation method and application
ActiveCN107083582BRough surfaceHigh activityInorganic material artificial filamentsMetal/metal-oxides/metal-hydroxide catalystsFiberPeroxidase
The invention discloses a silver composite iron oxide fiber and its preparation method and application. The preparation method is as follows: polyvinylpyrrolidone is dissolved in an organic solvent to make a polymer solution, iron nitrate, silver nitrate and citric acid are dissolved in water to make a salt solution, and the polymer solution and the salt solution are mixed and stirred evenly. Preparing a precursor sol solution with a set viscosity, using electrospinning technology to make the precursor sol solution into gel fibers, drying the gel fibers and then calcining them, to obtain silver composite iron oxide fibers after calcining; wherein , the mass ratio of silver element, iron element and citric acid is 1:5~8:45~50. The calcination process is to first heat to 300±10°C and keep it for a period of time, and then heat to 450±10°C and keep it for a period of time. The silver composite iron oxide fiber prepared by this preparation method has peroxidase-like activity, and its enzyme activity is high and its stability is good.
Owner:QILU UNIV OF TECH
A preparation method of calcium-doped titanium dioxide nanofiber photocatalyst
InactiveCN106693947BImprove photocatalytic performanceWater/sewage treatment by irradiationWater contaminantsFiberOrganic dye
The invention discloses a method for preparing a calcium-doped titanium dioxide nanofiber photocatalyst, which includes the following steps: (1) Configuring solution A: adding a certain amount of acetic acid and polyvinylpyrrolidone to the ethanol solution, and stirring to form Transparent solution A; (2) Add a certain amount of isopropyl titanate and calcium acetate to the solution A prepared in (1). After stirring evenly, obtain transparent sol solution B; (3) Electrospinning the sol solution B prepared above; (4) Dry the sample prepared in (3) at room temperature for 24 to 96 hours, and then place it in a high-temperature furnace at 450 Calcination at ~700°C can produce Ca 2+ Doped TiO 2 Nanofibers. Ca prepared by this method 2+ Doped TiO 2 Nanofibers have excellent photocatalytic degradation properties for organic dyes.
Owner:QINGDAO UNIV
A kind of lens long-acting anti-fog silicon-based gel anti-fog agent and its preparation method and application
ActiveCN111518469BAvoid health threatsPlay anti-fog effectCoatingsOptical partsPolyvinyl alcoholSilicic acid
The invention relates to a long-acting anti-fog silicon-based gel anti-fog agent for lenses and its preparation method and application. The anti-fog agent is composed of a silicon-based sol solution and a long-chain polysaccharide / amino molecule cross-linking solution, wherein: the silicon-based sol The solution includes: tetraethyl orthosilicate, cyclopentasiloxane, polydimethylsiloxane crosslinked polymer, organic solvent; the long-chain polysaccharide / amino molecule crosslinking solution includes: deionized water, Polysaccharide molecule, polyvinyl alcohol, amino molecule surfactant, photocatalytic attachment agent cerium oxide. The silica sol in this anti-fog sol is cross-linked with hydrophilic polysaccharide molecules and amino molecules to form a core-shell structure with a rigid center and a soft long chain, which promotes water droplets to spread evenly and rapidly throughout the surface through capillary action, achieving moisture absorption and anti-fog effects , long-chain polysaccharide / amino molecules are used as end-capping agents to inhibit the volatilization of surfactants, and cerium oxide is introduced to increase the surface adsorption of silica sol, so as to overcome the problem of poor light transmission caused by poor adhesion of the original water-based anti-fog coating.
Owner:SHANGHAI JIAOTONG UNIV
Weak solvent ink absorbing coating and preparation method thereof
InactiveCN113943513AGood film formingPromote environmental protectionCoatingsDioxyethylene EtherSolvent
The invention discloses a weak solvent ink absorbing coating, and the coating is prepared from the following raw materials in parts by weight: 100-130 parts of modified sol solution, 5-8 parts of triethanolamine, 6-7 parts of boric acid, 0.3-1 part of p-toluene sulfonic acid, 1-2 parts of calcium palmitate, 1-2 parts of octylphenol polyoxyethylene ether, 7-11 parts of oil soluble phenolic resin and 15-20 parts of castor oil. The coating disclosed by the invention is good in environmental protection property, free of toxic and harmful volatile substances, good in ink fixity and excellent in comprehensive performance.
Owner:程超
Hot aerosol generator
The invention relates to the technical field of medical instruments, in particular to a hot aerosol generator which comprises a cup body, a water tank and an ultrasonic vibration generator, wherein the ultrasonic vibration generator is arranged at the bottom of the water tank, an aqueous solution is loaded in the water tank, a vibrating diaphragm is arranged at the bottom of the cup body, and an aerosol solution is loaded in the cup body. The bottom of the vibrating diaphragm is soaked in the water solution, a heating body used for heating the aerosol solution is arranged in the cup body, and the interior of the cup body is further externally communicated with an air inlet pipe used for guiding in airflow and an air outlet pipe used for guiding out airflow. According to the hot aerosol generator, micron-sized hot aerosol is formed by means of hot atomization, the aerosol is promoted to enter the throat, the trachea, the bronchus and even the pulmonary alveoli in the human body, viruses entering the human body can be killed easily, and therefore, various coronavirus pneumonia can be treated rapidly.
Owner:ANSHAN QIDIAN ECOLOGICAL SCI & TECH INST
Method for preparing layered K2Ti4O9 continuous nanofiber
InactiveCN103060948BSimple processSimple production equipmentInorganic material artificial filamentsFilament/thread formingFiberPolymer science
The invention is a method for preparing nanofiber, and in particular comprises: by using butyl titanate, KNO3, citric acid, ethanol and nitric acid as raw materials, wherein by molar ratio, butyl titanate: KNO3: Citric acid: ethanol: dilute nitric acid = 1:2:2: (38 ~ 50): (19 ~ 25), polyvinyl alcohol or polyvinyl pyrrolidone as a polymer template, and aqueous solution of polyvinyl alcohol as a solvent, preparing a sol solution at room temperature; then preparing composite fiber by using an electrostatic spinning method, wherein an electrostatic spinning voltage is controlled to be 10 ~ 30KV, and curing distance of the nozzle to the accept screen is 8 ~ 20cm; and then performing heat treatment to the composite fiber at 500 ~ 950 DEG C for 3 ~ 8h to obtain layered K2Ti4O9 continuous nanofiber. The method of the invention is simple in process, easy in operation, high in efficiency, low in energy consumption, and simple in production equipment; and the prepared fiber has high purity, good crystallinity, a large surface area, a large length-diameter ratio and good dispersion.
Owner:WUHAN UNIV OF TECH
Multichannel open-tube silica gel capillary column using a metal filament as template and a preparation method thereof
ActiveCN113419003AShape is easy to controlRealize the horizontal diffusion functionComponent separationSilicic acidPolyethylene glycol
The invention discloses a multichannel open-tube silica gel capillary column using a metal filament as a template and a preparation method thereof, and the preparation method comprises the following steps: (1) carrying out primary polymerization under the contact of a sol solution and a metal wire to form a polymerized stationary phase layer on the surface of the metal wire to obtain the metal wire with the stationary phase layer; (2) introducing the metal wire with the stationary phase layer into a capillary tube, initiating secondary polymerization in a sol solution, and heating and aging to obtain a capillary column containing a silica gel stationary phase; and (3) removing the metal wires in the capillary column by an in-situ dissolution method, and calcining to obtain a multichannel open-tube silica gel capillary column, wherein the sol solution in the step (1) and the sol solution in the step (2) respectively contain polyethylene glycol, urea, tetramethyl orthosilicate and an acetic acid solution. The silica gel capillary column has the characteristics of low column pressure, high column capacity and high column efficiency.
Owner:ANHUI NORMAL UNIV
Strontium-doped silicon dioxide nanofiber membrane and preparation method thereof
PendingCN114592277AGood biocompatibilityAvoid rapid degradationMonocomponent synthetic polymer artificial filamentNon-woven fabricsO-Phosphoric AcidPolyvinyl alcohol
The invention provides a strontium-doped silicon dioxide nanofiber membrane and a preparation method thereof, and the preparation method comprises the following steps: mixing tetraethoxysilane, deionized water and phosphoric acid to obtain a SiO2 sol solution; adding strontium nitrate into the SiO2 sol solution to obtain a mixed sol solution; preparing a polyvinyl alcohol aqueous solution; mixing a polyvinyl alcohol aqueous solution with the mixed sol solution to obtain an electrostatic spinning solution; performing electrostatic spinning on the electrostatic spinning solution to obtain a nanofiber membrane; and calcining the nanofiber membrane to obtain the strontium-doped silicon dioxide nanofiber membrane. According to the preparation method of the strontium-doped silicon dioxide nanofiber membrane, the preparation process is simple, the raw material source is wide, the prepared strontium-doped silicon dioxide nanofiber membrane has good biocompatibility, meanwhile, the ion release speed is slow, sudden release of strontium is avoided, and the preparation method is suitable for industrial production. The strontium-doped silicon dioxide nanofiber membrane can keep biological activity for a long time, bone tissue regeneration is promoted, and the bone repair effect is improved.
Owner:诺一迈尔(苏州)生命科技有限公司 +1
Preparation method of oil-resistant self-cleaning coating
ActiveCN114316696AReduce the amount of adsorptionReduce volumeGeneral water supply conservationMonocomponent synthetic polymer artificial filamentFiberCoated surface
Owner:ZHEJIANG YUTONG NEW MATERIAL
Manufacture method and application of novel incomplete protein micro catcher
InactiveCN102030816AEasy to prepareHigh mechanical strengthPeptide preparation methodsHydrolysisBiology
The present invention belongs to the technical field of chemical technology, specifically relates to a manufacture method and application of novel incomplete protein micro catcher. The method of the present invention uses a sodium hydroxide solution to process a commercial opposite phase chromatographic filler; the processed filler is suspended in a sol solution regarding methyl triethoxysilane as a precursor; the suspending liquid is led to a proper length in a capillary by a pressure device; an incomplete protein micro catcher in a three-dimensional mesh space structure is manufactured by the hydrolysis and polycondensation of the precursor. The micro catcher is used for gathering, concentrating and desalting incomplete protein samples in a liquid chromatogram, wherein the recovery rate of protein is high, the gathering volume of the catcher is big, plungers are not needed, and the manufacture method is simple and effective. The micro catcher has good practical value and application perspective in fields like proteomics and the like.
Owner:FUDAN UNIV
A kind of preparation method of divalent metal iron-based spinel
The invention provides a preparation method of divalent metal iron-based spinel. The preparation method comprises the steps as follows: S1, mixing a ferric nitrate solution and a divalent metal nitrate solution in the solute mole ratio being 1:2 to obtain a solution A; S2, dropwise adding an ammonium carbonate or ammonium bicarbonate solution to the solution A to obtain a hydrosol solution; S3, drying the hydrosol solution obtained in the S2 at 65-105 DEG C, and performing forming at 350-550 DEG C to obtain a spinel precursor; S4, calcining the spinel precursor at 700-1,100 DEG C to obtain divalent metal iron-based spinel, wherein no continuous foam exists in the solution when ammonium carbonate or ammonium bicarbonate is dropwise added. The method has a simple and quick process, the requirement for equipment and the preparation cost are reduced, the conditions are easy to control in the preparation process, and mass production can be realized. Meanwhile, divalent metal iron-based spinel with good crystal structure, particle size uniformity, high-temperature stability, mechanical stability and good magnetism can be obtained.
Owner:SOUTH CHINA AGRI UNIV
Method for preparing fat-soluble nutrient microcapsules
PendingCN114287635ATo achieve multiple loadsImprove processing stabilityFood shapingMicroballoon preparationPolymer scienceOil phase
The invention relates to a method for preparing fat-soluble nutrient microcapsules. The method comprises the following steps: (1) preparing an oil phase; (2) preparing a water phase, namely pretreating 1-10 parts of starch, dissolving or dispersing the starch in water, then adding 0.01-2 parts of a cross-linking agent into the water, and completely dissolving or dispersing to obtain the water phase; (3) preparing W / O emulsion; (4) preparing W / O / W emulsion: dropwise adding the W / O emulsion prepared in the step (3) into the hydrosol solution to form the W / O / W emulsion; (5) pre-reaction; and (6) preparing the microcapsule. According to the microcapsules prepared by the method, fat-soluble nutrient particles are crosslinked, wound and coated by starch chains, and fat-soluble nutrients are loaded in multiple ways, so that the processing stability is greatly improved.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY +1
A kind of low-density colored silica particles with porous structure and its preparation
Provided are low-density colored silica particles having a porous structure, and a preparation method thereof. The preparation method comprises: dropwise adding a sodium silicate solution to a sulfuric acid solution to obtain an acidic silica sol solution; injecting the sulfuric acid solution and hydroxyethyl cellulose into a reaction tank, then adding the acidic silica sol solution and sodium silicate solution simultaneously; after the acidic silica sol solution is added dropwise, continuing to add the sodium silicate solution dropwise until the pH value is 3–4; adding pigment and then adding sodium silicate solution dropwise until a final pH value is reached, then stirring until the system precipitates a gel; adding ethanol and glycerol to the gel and stirring; pressure-filtering, drying, crushing, washing, and drying the gel to obtain colored silica particles. The silica particles have good suspension performance and adsorption performance, and mild friction performance, and are suitable for application in everyday products such as shower gel, facial cleanser, and toothpaste, and thus have good prospects for application.
Owner:GUANGZHOU FEIXUE MATERIAL TECH
Urea-functionalized sol-gel
Urea and amine comprising sol-gel hybrid coatings have been developed for numerous applications, including capillary microextraction-high performance liquid chromatographic analysis from aqueous samples. A fused silica capillary may be coated from the inside with surface bonded coating material and may be created by in-situ sol-gel reaction(s). Urea-functionalized coatings can be immobilized on the inner surface of a capillary by condensing silanol groups of capillary and sol-solution. Urea functionalized, sol-gel coated capillaries may be installed, e.g., in HPLC manual injection ports, and optionally pre-concentrated analytes including phenols, ketones, aldehydes, and / or polyaromatic hydrocarbons, from highly polar to non-polar, maybe analyzed by online extraction and high-performance liquid chromatographic. Such coatings may achieve sensitivities with lower detection limits (S / N=3) of 0.10 ng / mL to 14.29 ng / mL, with reproducibilities of <12.0% RSD (n=3), or <10.0% RSD (n=3) by exchanging the capillary of the same size.
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Ultraviolet aging resistant coating and preparation method thereof
ActiveCN114687209ALow costImproved performance against UV agingLight resistant fibresBulk chemical productionCellulosePolymer science
The invention provides an anti-ultraviolet aging coating and a preparation method thereof, and belongs to the technical field of polymer, and the preparation method comprises the following steps: S1, preparing acetoacetyl functionalized cellulose; s2, preparing a sol solution of the anti-ultraviolet aging coating; and S3, preparing the anti-ultraviolet aging coating. According to the method disclosed by the invention, the poly (m-phenylene isophthalamide) (meta-aramid) anti-ultraviolet aging coating sol can be prepared, and poly (m-phenylene isophthalamide) (meta-aramid) fibers and products thereof can be directly coated, so that the anti-ultraviolet aging performance of the poly (m-phenylene isophthalamide) (meta-aramid) fibers and the products thereof is improved; the method has the technical advantages of high universality, low cost, simple synthesis, low raw material cost and the like.
Owner:SHANGHAI JIAO TONG UNIV
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