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42results about How to "Uniform and stable particle size" patented technology

Method for preparing gallium nitride nano crystal using sol-gel method

The sol-gel process of preparing nanometer gallium nitride crystal includes the first sol-gel process to prepare gallium oxide-amorphous carbon mixture through dissolving gallium nitrate in concentrated nitric acid, dropping concentrated ammonia water to regulate pH value, heating the solution, adding citric acid, stirring for 2 hr to obtain transparent gel, and drying the gel at high temperature in a muffle; and the subsequent preparation of nanometer gallium nitride crystal inside one tubular vacuum furnace through setting the gallium oxide-amorphous carbon mixture into a ceramic tube, exhausting air and filling with nitrogen, maintaining at 850-950 deg.C for 1 hr, and introducing argon to cool. The prepared nanometer gallium nitride crystal has hexagonal structure, average particle size of 10-11 nm and homogeneous particle size, and may be used in preparing high quality one-dimensional gallium nitride material or as composite gallium nitride quantum dot material directly.
Owner:天津中天杰诺科技有限公司

Preparation method of bonding type stationary phase chiral chromatographic column

The invention provides a preparation method of a bonding type stationary phase chiral chromatographic column. The method comprises the following steps: firstly preparing silica gel bonded with unsaturated double bond and filling into a chiral chromatographic column, then preparing a polysaccharide derivative compound bonded with unsaturated double bond, injecting the polysaccharide derivative compound into the chiral chromatographic column in a solution form to enable the polysaccharide derivative compound to be evenly adsorbed to the surface of the silica gel, and then injecting an initiator solution to the chiral chromatographic column, so that the unsaturated double bond of the silica gel and the unsaturated double bond of the polysaccharide derivative compound generate polymerization reaction to form a bonding type stationary phase. According to the preparation method disclosed by the invention, steps of adsorbing and bonding in conventional preparation methods are completed in the chromatographic column, so that the steps and the process are simplified; the preparation method has the characteristics of being simple, quick and high in efficiency; the stationary phase of the prepared chiral chromatographic column is uniform and can be applied to multiple strong-polarity mobile phases; the column efficiency is high and the separation effect is good.
Owner:浙江月旭材料科技有限公司

Simultaneous online zinc spraying and dust removal device for multiple microchannel aluminium flat pipes

The invention discloses a simultaneous online zinc spraying and dust removal device for multiple microchannel aluminium flat pipes. The simultaneous online zinc spraying and dust removal device comprises spraying equipment, a spraying cabinet and a dust removal device, wherein the spraying equipment is arranged in the spraying cabinet, and an air outlet of the spraying cabinet is connected to the dust removal device; the multiple microchannel aluminium flat pipes enter into the spraying cabinet from one side of the spraying cabinet in parallel and exit out of the spraying cabinet from the other side of the spraying cabinet; the spraying equipment comprises a spraying main machine and a plurality of melting injection spray guns, the electric current parts of the plurality of melting injection spray guns are connected to the electric current output end of the spraying main machine, each melting injection spray gun is used for carrying out zinc spraying operation on each microchannel aluminium flat pipe, and the spraying main machine is provided with a power source part which comprises an input rectifying circuit, an input filter circuit, a power switch circuit, a voltage conversion and isolation circuit, an output rectifying circuit, an output filter circuit, an electric arc zone temperature detection sensor, a comparison circuit and a control circuit. The simultaneous online zinc spraying and dust removal device has a good spraying effect and low pollution to environments.
Owner:SHANGHAI LIANGSHI BLASTING & COATING EQUIP

Method for preparing self-assembly ketoprofen liposome by electrostatic spinning technology

The invention relates to a method for preparing self-assembly ketoprofen liposome by an electrostatic spinning technology. The method comprises the following steps of: (1) adding polyvinylpyrrolidone, soybean lecithin and ketoprofen into a mixed solvent while stirring, continuously stirring for 1 to 2 hours until the mixed solvent is completely swelled, oscillating until the mixed solvent is completely dissolved, making solution transparent, and performing ultrasonic processing for degassing to obtain spinning solution; (2) performing electrostatic spinning by means of the spinning solution, and drying collected electrostatically-spun fibrous membranes in vacuum; and (3) dissolving the electrostatically-spun fibrous membranes in double distilled water to obtain liposome suspending liquid, performing ultrasonic processing, and thus obtaining the ketoprofen liposome. The method is easy to operate, has low time consumption and is suitable for large-scale production; the used raw materials are inexpensive and readily available; and the ketoprofen liposome has high degradability and biocompatibility and has the potential when applied to subsequent related experimental analysis.
Owner:DONGHUA UNIV

Method for simultaneously loading zif-8 nanospheres with AuNPs and Fe3O4NPs

The invention discloses a method for simultaneously loading zif-8 nanospheres with AuNPs and Fe3O4NPs. The method comprises the following steps: (1) preparing 13nm gold nanoparticles by a sodium citrate reduction method, and performing stabilization with polyethylene glycol mPEG-SH; (2) preparing Fe3O4 NPs with stable 12nm oleic acid by a reaction of iron (III) acetylacetone (Fe(acac)3) and oleicacid-ethanol, and performing stabilization with polyethylene glycol mPEG-COOH; and (3) adding substances obtained in the (1) and (2) into zinc nitrate, performing uniform stirring, adding dimethylimidazole into the mixture, performing a reaction to prepare the nanospheres of zif-8 simultaneously loaded with Au NPs and Fe3O4 NPs. The zif-8 nanospheres prepared by the method have photo-thermal performance and magnetic resonance imaging effect, can be applied to multiple uses including biological probes, magnetic targeting and the like, and are especially applicable to magnetic targeting administration and intracellular photothermal therapy of cancers. The technology for embedding two kinds of nanoparticles in zif-8 can be used for easily controlling the quantity of loaded Au NPs and Fe3O4 NPs, has high yield, and can realize large-scale preparation.
Owner:BEIJING FORESTRY UNIVERSITY

Method for preparing nanometer tungsten carbide powder by methyl alcohol cracking

The present invention provides methanol cracking and low temperature vapor carbonizing process of preparing nanometer WC powder. The WO3 powder of average size 21 nm and specific surface area 54 sq m / g as main material and methanol as carbon source are reacted at 450-950 deg.c for 1.5-4 hr in the presence of Co / Fe catalyst to obtain nanometer level WC. Methanol is first made to pass through liquid pump, flow meter and pre-heating pipe at 300-420 deg.c to gasify, and the methanol gas is catalytically cracked in the cracking device at 420-550 deg.c to obtain required reacting gas CO and H2. CO and H2 are made to react with nanometer WO3 powder to produce nanometer level WC. The present invention has the advantages of low cost, high cracking efficiency, and controllable, homogeneous and stable WC granularity.
Owner:UNIV OF SCI & TECH BEIJING

Eucommia-ulmoides solid health beverage and preparing method thereof

The invention discloses a eucommia-ulmoides solid health beverage and a preparing method thereof. The eucommia-ulmoides solid health beverage is characterized by being prepared from, by weight, 20 parts to 30 parts of eucommia-ulmoides mixed extract powder, 6 parts to 7 parts of schisandra-chinensis ultra-fine powder, 10 parts to 15 parts of red-date ultra-fine powder, 20 parts to 30 parts of cane sugar, 0.8 part to 1 part of wolfberry ultra-fine powder, 3 parts to 5 parts of pumpkin ultra-fine powder, 0.5 part to 1.5 parts of black tea and 45 parts to 65 parts of soluble starch. The eucommia-ulmoides mixed extract powder is prepared from 10 parts to 15 parts of eucommia-ulmoides leaves and / or eucommia-ulmoides bark, 8 parts to 10 parts of buckwheat sprouts, 1 part to 1.5 parts of eleutherococcus senticosus, 0.5 part to 1 part of rhodiola rosea and 3 parts to 5 parts of honeysuckles; 5% ethanol solutions are added into the mixture in the proportion of 12:1, concentrating and spraying are carried out, and the eucommia-ulmoides mixed extract powder is prepared. According to the eucommia-ulmoides solid health beverage and the preparing method, the medicine and food homology theory of traditional Chinese medicine in China is adopted, eucommia ulmoides is used as main raw materials, medicine-and-food-homology or health-caring traditional dietetic invigoration raw materials such as red dates and schisandra chinensis are used for assisting, the beverage is safe and free of additives, a user can drink the beverage without worrying, and the dietary therapy healthy beverage which is easy to drink and has the multiple effects of resisting bacteria, diminishing inflammation, improving immunity, reducing blood fat and blood pressure, strengthening bones and muscles, resisting fatigue, being not prone to rotting and the like is prepared.
Owner:陕西云智知识产权运营管理有限公司

Reducing response magnetic drug-loaded nanoparticles with synergetic anti-cancer interaction and preparation method of reducing response magnetic drug-loaded nanoparticles

InactiveCN106822902AReductively responsiveSuperparamagnetic responsivenessOrganic active ingredientsPharmaceutical non-active ingredientsSide effectSuperparamagnetism
The invention relates to reducing response magnetic drug-loaded nanoparticles with synergetic anti-cancer interaction and a preparation method of the reducing response magnetic drug-loaded nanoparticles. The drug-loaded nanoparticles are prepared from a polymer prodrug and inorganic nanoparticles, which are connected through a disulfide bond; and the inorganic nanoparticles include surface-aminated superparamagnetism ferroferric oxide nanoparticles (SPION-NH2) and aminated selenium nanoparticles (NH2-R-SeNPs) employing an amino-containing high polymer as a template. The preparation method specifically comprises the following steps: (1) mixing an SPION-NH2 solution with an NH2-R-SeNPs dispersing liquid and adjusting the pH value to be 4.5-5.5; (2) dissolving the polymer prodrug connected through the disulfide bond by using ultrapure water and adjusting the pH value to be 5; and (3) dropwise adding the solution obtained in step (1) to the solution obtained in step (2), adjusting the pH value of a system to be 7.4, stirring the solution at room temperature for 10-14h to obtain the reducing response magnetic drug-loaded nanoparticles with synergetic anti-cancer interaction. The drug-loaded nanoparticles have the advantages of specific responsiveness in a targeted area, synergetic interaction and a low toxic or side effect.
Owner:WUHAN INSTITUTE OF TECHNOLOGY

Nano pesticide for preventing and treating monochamus alternatus and pine wood nematodes

The invention discloses a novel nano pesticide for preventing and treating monochamus alternatus and pine wood nematodes. The novel nano pesticide is a nano pesticide preparation prepared by taking nano Cu-BTC as a carrier to load pesticide abamectin; the nano Cu-BTC serving as the carrier is uniform and stable in particle size and good in dispersity, and agglomeration is avoided; the interior ofthe nano Cu-BTC is of a porous structure, so that the nano Cu-BTC has a relatively large specific surface area, high drug loading capacity and a quite good sustained and controlled release effect. Theprepared nano pesticide preparation can penetrate through cell wall barriers of plants due to the nano size, and the pesticide is transported into barks and is used for preventing and treating monochamus alternatus and pine wood nematodes.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin for resin grinding tool and preparation method of furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin

The invention aims at providing furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin for a resin grinding tool and a preparation method of the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin, wherein the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin is proper in molar ratio, high in solid content, good in water solubility, low in free phenol content, stable in performance and reduced in performance degradation. The furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin comprises the following components in parts by mass: 100 parts of phenol, 10-35 parts of furfuralcohol, 120-180 parts of formaldehyde, 10-30 parts of urea, 1-10 parts of a moisturizing agent, 1.2-3.0 parts of an alkaline catalyst and 0.1-2 parts of a novel coupling agent. The preparation method of the phenol-formaldehyde resin comprises the following steps of (1) adding phenol, formaldehyde and part of furfuralcohol; (2) adding the alkaline catalyst; (3) heating; (4) adding part of the urea; (5) heating, adding the left furfuralcohol and urea, and stirring until the water solubility conforms to the standard; (6) cooling, reducing water, dehydrating, and adding the novel coupling agent; and (7) and carrying out reduced-pressure dehydration to obtain the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin. The furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin is applied to the field of friction materials.
Owner:ZHUHAI BONDRIGHT SYNTHETIC MATERIAL

Traditional Chinese medicine decocted extract used for eliminating female menopause symptoms, and preparation method for traditional Chinese medicine decocted extract

InactiveCN110548120AImprove bioavailabilitySolve the poor absorption in the bodyAerosol deliveryOintment deliveryThrombusOfficinalis
The invention provides a traditional Chinese medicine decocted extract used for eliminating female menopause symptoms, and a preparation method for the traditional Chinese medicine decocted extract, and belongs to the technical field of traditional Chinese medicines. The traditional Chinese medicine decocted extract comprises the following raw materials: colla corii asini, rehmanniae radix, fructus lycii, paeoniae alba radix, radix morindae officinalis, margarita, ginseng radix, radix asparagi, salt-processed fructus ligustri lucidi, rhizoma dioscoreae stir-baked with brans, rhizoma alismatis,fructus amomi, radix rehmanniae praeparata, radix polygoni multiflori praeparata, radix angelicae sinensis, herba cistanches and radix aucklandiae. An extraction method is optimized to guarantee thatthe extraction quantity of each effective ingredient is increased, and meanwhile, pollution links and manpower costs during medicine preparation can be reduced. The traditional Chinese medicine decocted extract is used for lightening dizziness and insomnia symptoms associated with female menopause, treating clinical female functional uterine bleeding and poor endometrial development phenomena, taking part in the auxiliary treatment of a glucose and lipid metabolism syndrome and a polycystic ovarian syndrome, and eliminating symptoms of female anemia and menstrual disorder, and also has good anti-ageing and anti-thrombus functions. The traditional Chinese medicine decocted extract can effectively make up the defects of an existing medicine, and achieves functions of treating diseases and improving female body functions.
Owner:沈阳东星医药科技有限公司

Liquid phenolic resin with high solid content and special for resin grinding tool and preparation method thereof

The invention aims at providing liquid phenolic resin with a high solid content and special for resin grinding tools and a preparation method thereof. The liquid phenolic resin is appropriate in molarratio, high in solid content and stable in technical index, and the resin grinding tools made of the liquid phenolic resin have excellent performance. The phenolic resin is prepared from, by mass, 100 parts of phenol, 94-170 parts of formaldehyde, 5-15 parts of composite alkali metal oxides, 1-10 parts of formaldehyde catching agent, 1.2-3.0 parts of basic catalysts and 0.1-2 parts of lactic acid, wherein the concentration of formaldehyde is 37%. The preparation method of the phenolic resin includes the following steps of adding phenol and formaldehyde; adding the basic catalysts; conductingheating by three steps, and then conducting vacuum dewatering; introducing icy water for fast cooling, adding composite alkali metal oxides, and then conducting depressurization and dewatering; addinga formaldehyde catching agent and lactic acid, and conducting stirring; detecting corresponding technical indexes, and if the indexes reach standards, obtaining a product. The liquid phenolic resin with the high solid content and special for the resin grinding tools and the preparation method thereof are applied to the field of phenolic resin.
Owner:ZHUHAI BONDRIGHT SYNTHETIC MATERIAL

Nano composite high-hygroscopicity material and preparation method therefor

The invention discloses a nano composite high-hygroscopicity material and a preparation method therefor. According to the nano composite high-hygroscopicity material and the preparation method therefor, silica sol is dispersed in an acrylic neutralizing solution for modification, SiO2 nanoparticles are produced in situ during cross-linking copolymerization of acrylic acid and an acrylamide monomer, and then, reactive compounding of SiO2 nanoparticles and a polyacrylic polymer is achieved; the prepared nano composite high-hygroscopicity material is prepared from a low-crosslinking-degree resinmatrix with high water absorption multiplying power and high water absorption rate and a nano composite high-crosslinking-degree surface layer, the water absorption multiplying power is increased under pressure, and finally, the high-hygroscopicity composite material is prepared; the dispersity is good; and meanwhile, microchannels are formed between inorganic nanoparticles and a polymer, the volatilized overflow of internal water molecules is facilitated, the drying effect of the high-hygroscopicity material is better, the drying time is shortened obviously, the production efficiency is increased, the production cost is reduced, and thus, the nano composite high-hygroscopicity material is suitable for being produced on a large scale and has an extensive application prospect.
Owner:GUANGDONG UNIV OF TECH

Method and system for preparing potassium chloride from carnallite raw ore

The invention discloses a method for preparing potassium chloride from carnallite raw ore. The method comprises the following steps of generating low-sodium carnallite slurry in a first flotation device from carnallite raw ore slurry; feeding the low-sodium carnallite slurry into a first screening device to obtain a first oversize product and a first undersize product; feeding the first oversize product into a crushing device, and returning the crushed first oversize product to the first flotation device; containing crystallizer underflow and crystallizer overflow liquid are from the first screen underflow in a crystallizer; conveying the bottom flow of the crystallizer into a second screening device to obtain a second oversize product and a second undersize product, conveying the second oversize product into the crushing device, and conveying the second undersize product into a fourth concentrating device for producing potassium chloride; and generating crude potassium slurry in the second flotation device form the overflow liquid of the crystallizer, and feeding the crude potassium slurry into the fourth concentrating device for producing potassium chloride. According to the method, the low-sodium carnallite ore pulp is subjected to circulating screening-crushing treatment, so that the particle size of the first screen underflow is uniform and stable, the crystallizer overflow liquid is subjected to reverse flotation again, and the potassium resource is recycled.
Owner:QINGHAI SALT LAKE IND

Rotor and dispersion machine for dispersing materials

PendingCN107233980ANo damageReduce the possibility of secondary reunionsGrain treatmentsEngineeringMachine
The invention discloses a rotor and a dispersion machine for dispersing materials. According to the rotor and the dispersion machine for dispersing the materials, the rotor is of a rotating body structure and comprises an outer wall, and the interior of the rotor is of a hollow structure; a support frame is arranged in the hollow structure and fixedly connected with the rotor; a connecting hole used for mounting an input shaft which drives the rotor to rotate at high speed is formed in the support frame, and a material flow hole is further formed in the support frame; and material dispersion holes distributed in an annular array are formed in the outer wall, and penetrate through the outer wall. The dispersing efficiency of the rotor and the dispersion machine is high, accordingly the energy consumption is reduced, energy is saved and environment is protected; and meanwhile, the rotor and the dispersion machine are simple in structure, and low in manufacturing and processing cost.
Owner:东莞鸿凯工程设备有限公司

Preparation method of zoledronic acid-loaded zeolitic imidazolate framework nanoparticle material

The invention discloses a preparation method of a zoledronic acid-loaded zeolitic imidazolate framework nanoparticle material. The preparation method comprises the following steps: preparing a 2-methylimidazole aqueous solution, dropwisely adding a Zn(NO3)2 aqueous solution while stirring, continuing stirring until the reaction system becomes white colloid, dropwisely adding a zoledronic acid aqueous solution into the obtained zeolitic imidazolate framework-8 colloid while stirring, continuously stirring, centrifuging and washing to obtain white precipitate, namely the zoledronic acid-loaded zeolitic imidazolate framework nanoparticle material. The present invention adopts a one-step method to synthesize the zoledronic acid-loaded zeolitic imidazolate framework nanoparticle material (ZIF-8@ZA) in a water system, can load zoledronic acid into ZIF-8 nanoparticles without modifying zoledronic acid, not only preserves pharmacological activity of zoledronic acid itself, but also simplifiesthe process, has simple operation and high production efficiency.
Owner:XIANGYA HOSPITAL CENT SOUTH UNIV

Gamma-tocotrienol-containing nano emulsion and preparation method and use thereof

InactiveCN109260149AGuaranteed basic performanceHigh adjustable pressureOrganic active ingredientsEmulsion deliveryAntioxidantGamma-Tocotrienol
The invention relates to a gamma-tocotrienol-containing nano emulsion and a preparation method and use thereof. The nano emulsion is composed of the following components by mass percentage: gamma-tocotrienol 0.02%- 10%, injection oil 5%- 20%, emulsify 0.5%- 2%, isoosmotic adjusting agent 1.5%- 3.0%, antioxidant 0.005%- 0.5 % and that balance is water. By using emulsifier, gamma-tocotrienol and injectable oil are made into nanoparticles with small particle size, high content of active ingredients and stable, and no need to add excipients such as Tween, Span, preservatives and the like in the preparation, and the safety is higher. The gamma-tocotrienol nanoemulsion prepared by the invention expands the dosage form for clinical application.
Owner:周晋

Spraying system based on urban rail traffic

PendingCN109331362AReduce hidden dangersGood fire extinguishing performanceFire rescueControl systemNitrogen
The invention provides a spraying system based on urban rail traffic. The spraying system comprises a water bottle and high-pressure nitrogen bottle set, a water supply pipe net, a control valve set and novel fine water mist spraying heads, wherein the water bottle and high-pressure nitrogen bottle set is arranged at the bottom of a carriage, the water supply pipe net is arranged at the top and the periphery of the carriage, the control valve set is used for controlling the system to open and close, and the novel fine water mist spraying heads are installed at the top of the carriage; and thewater bottle and high-pressure nitrogen bottle set is connected to the water supply pipe net through the control valve set, and the tail ends of the water supply pipe net is connected to the fine water mist spraying heads. According to the spraying system, a bottle group type power source is adopted, the fire extinguishing structure is simple, and performance is high; and meanwhile, a novel designis carried out on the traditional fine water mist spraying heads, the novel fine water mist spraying heads adopt a dual filter screen structure and a plurality of water mist refining structures, morestable and uniform high-pressure fine water mist can be generated, and the system is more suitable for rail traffic vehicles.
Owner:HEFEI UNIV OF TECH

Lenvatinib liposome, pharmaceutical composition thereof, preparation method thereof and prescription process optimization method

The invention provides a lenvatinib (Len) liposome, a pharmaceutical composition thereof, a preparation method thereof and a prescription process optimization method. The liposome contains lenvatinib, phospholipid, an amphiphilic derivative, cholesterol and a gradient establishing substance, wherein the weight ratio of cholesterol to phospholipid is 1:2-1:10, the weight ratio of lenvatinib to phospholipid is 1:10-1:40, the weight ratio of the amphiphilic derivative to the phospholipid is 1:2-1:10, the phospholipid is glycerophospholipid or sphingomyelin, the gradient adopts a pH gradient method or an amine gradient method, and the concentration of the gradient establishing substance solution is 100-300mM. The Len liposome can actively target a tumor site through an SA-Siglec1 pathway, has the advantages of high encapsulation efficiency, high stability, high active targeting, high tumor inhibition rate and the like, and has good clinical application potential and product development value.
Owner:SHAOXING UNIVERSITY

A kind of sodium alginate/penetrating peptide/plasmid ternary nanocomposite vaccine and its preparation and application

The invention discloses a sodium alginate / penetrating peptide / plasmid ternary nanocomposite vaccine and its preparation and application. The ternary nanocomposite vaccine is composed of sodium alginate, membrane-penetrating peptide and plasmid, wherein the mass ratio of sodium alginate to membrane-penetrating peptide is 1‑5:1, and the mass ratio of membrane-penetrating peptide to plasmid is 5‑400 :1; it can be used to prepare plasmid oral drugs, and provides a new idea for oral delivery of plasmids. The preparation method is to obtain a sodium alginate / membrane penetrating peptide / plasmid ternary nanocomposite vaccine through electrostatic adsorption-mediated layer-by-layer assembly. The preparation conditions are mild, the preparation process is easy to control, the preparation method is simple, and the particle size of the obtained complex is uniform and stable. , is conducive to industrial production.
Owner:ZHEJIANG UNIV

Organic peroxide microemulsion type initiator and preparation method thereof

ActiveCN114014962AReduce the amount addedReduced suspension polymerization reaction timePolymer scienceOil phase
The invention discloses an organic peroxide microemulsion type initiator and a preparation method thereof, and belongs to the technical field of initiator preparation. The initiator comprises the following components in percentage by mass: 0.5%-2% of a main emulsifier, 5%-10% of a co-emulsifier, 2%-5% of a main dispersant, 0.1%-0.2% of a co-dispersant, 10%-30% of an antifreeze agent, 30%-60% of an oil phase and the balance of deionized water. The preparation method comprises the following steps: mixing the oil phase with a certain amount of auxiliary materials such as the main emulsifier, the auxiliary emulsifier, the main dispersant, the auxiliary dispersant, the solvent and the like through the process disclosed by the invention, and then homogenizing and emulsifying to obtain a semitransparent uniform and stable microemulsion product. The particle size of the initiator product is lower than 0.08 micrometer, the emulsion stability is high, and when the initiator product is used for PVC polymerization synthesis, the initiation efficiency can be improved, and stable and efficient production of PVC is guaranteed.
Owner:乌鲁木齐市华泰隆化学助剂有限公司

A preparation method of nanocellulose, nanocellulose and water purification membrane, and a preparation method of water purification membrane

The invention belongs to the technical field of water purification and particularly relates to a preparation method of nanocellulose, the nanocellulose, a water purifying membrane and a preparation method of the water purifying membrane. The preparation method of the nanocellulose comprises steps as follows: raw material pretreatment; preparation of alpha cellulose and preparation of nanocellulose. The nanocellulose is prepared with the preparation method. The water purifying membrane comprises the nanocellulose. The preparation method of the water purifying membrane comprises steps as follows: preparation of a lignin base layer, preparation of a polyether sulfone ultrafiltration layer and preparation of the water purifying membrane, wherein the raw material lignin of the lignin base layer is a product separated in the preparation method of the nanocellulose. The preparation method adopts mild conditions, pollution emission is avoided, and the finally prepared nanocellulose meets requirement for preparation of the water purifying membrane. Further, the content of the nanocellulose in the water purifying membrane obtained with the provided preparation method of the water purifying membrane is high, the service life is longer and the water purifying effect is better.
Owner:青岛诺亚水务工程有限公司

Pharmaceutical composition for treating tumor and preparation method and application thereof

The invention provides a pharmaceutical composition for treating tumor and a preparation method and application thereof. The pharmaceutical composition comprises vorinostat and pharmaceutically acceptable adjuvant materials, wherein the pharmaceutically acceptable adjuvant materials comprise a filling agent, a binder, a disintegrating agent and a lubricating agent. The pharmaceutical composition and the preparation method thereof have the advantages that the pharmaceutically acceptable adjuvant materials are used to coordinate with the vorinostat so as to achieve even and stable particle granularity, and a fast dissolution feature is achieved to increase the antitumor effect of the vorinostat; during preparation, a fluidized bed top spray granulation method is used to allow the particle granularity to be even and stable, especially part of the filling agent is specifically used to prepare filling agent slurry which is mixed with a binder solution to serve as spraying liquid, the other part of the filling agent is mixed with other materials in a dry powder form to serve as fluidized bed materials, the particle granularity is well controlled through the spraying using the spraying liquid, particle properties are improved, stability is increased, preparation dissolution degree is increased, the preparation process is simple and controllable, and staff can be well protected.
Owner:TOT BIOPHARM CO LTD

Grinding method of water-quenched carbide slag

The invention discloses a water quenching carbonized dreg grinding method, which belongs to the technical field of powder processing, and aims at solving the problems that the water quenching carbonized dreg treated by a ball grinder grinding process for the carbonized dreg which is slowly cooled in air has large steel ball loss and low grinding efficiency, and the ground granularity does not meet the requirements. The water quenching carbonized dreg grinding method comprises the following steps: adding the water quenching carbonized dreg into a ball grinder stock bin; grinding by a grinding body to prepare carbonized dreg powder, wherein the grinding body is composed of steel balls with large and small grain diameters, the weight of the large-grain-diameter steel balls accounts for 60%-75% of the weight of the grinding body, the diameters of the large and small steel balls are phi30mm-phi80mm, and the difference value of the diameters of the two steel balls is not less than 20mm. According to the method, a process of firstly crushing and then grinding is not needed, and the production process is simple and easy to control; the granularity of the obtained carbonized dreg powder is uniform and stable, and the granularity requirements of grinding of the water quenching carbonized dreg by a low-temperature selection chlorination process are met; and the loss rate of the steel balls is reduced, the unit power consumption of the ball grinder is reduced and the production cost is saved.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Molten steel casting residue treatment and recycling method

ActiveCN102978305BPromote expansion and pulverizationSolve the separation problemSievingScreeningSlagMolten steel
The invention discloses a molten steel casting residue treatment and recycling method which comprises the circular treatment steps of slaking, screening, magnetic separation and the like. The f-CaO in casting residue is slaked by vapor to accelerate the expansion and efflorescence of the casting residue, thereby solving the problem on the separation of the casting residue from a tank body and reducing dust nuisance. According to the method, a mixture of water spray casting residue and pyrolytic steel slag is used as the raw material, and the pyrolytic steel slag has the advantage of low f-CaO content, thereby ensuring that the f-CaO content of the final product can meet the requirements of cement and construction material industries; and a rod grinder treatment process is used, thereby achieving favorable grinding effect and ensuring that the product is uniform and stable in particle size. For the product disclosed by the invention, slag steel of which the grade is greater than 80% can be returned for steel making; purified steel shots and magnetic separation powder of which the grade is greater than 42% can be used for a sintering procedure; and steel tailings of which the iron content is smaller than 2% and the f-CaO content is smaller than 3% can be used for producing steel slag powder, steel slag cement, construction material products and road materials. The invention maximally recycles the metal material in the casting residue, realizes the zero discharge of industrial solid waste and ensures that the casting residue can be recycled 100% at a high added value.
Owner:WUKUN STEEL

A nanocomposite superabsorbent material and its preparation method

The invention discloses a nano composite high-hygroscopicity material and a preparation method therefor. According to the nano composite high-hygroscopicity material and the preparation method therefor, silica sol is dispersed in an acrylic neutralizing solution for modification, SiO2 nanoparticles are produced in situ during cross-linking copolymerization of acrylic acid and an acrylamide monomer, and then, reactive compounding of SiO2 nanoparticles and a polyacrylic polymer is achieved; the prepared nano composite high-hygroscopicity material is prepared from a low-crosslinking-degree resinmatrix with high water absorption multiplying power and high water absorption rate and a nano composite high-crosslinking-degree surface layer, the water absorption multiplying power is increased under pressure, and finally, the high-hygroscopicity composite material is prepared; the dispersity is good; and meanwhile, microchannels are formed between inorganic nanoparticles and a polymer, the volatilized overflow of internal water molecules is facilitated, the drying effect of the high-hygroscopicity material is better, the drying time is shortened obviously, the production efficiency is increased, the production cost is reduced, and thus, the nano composite high-hygroscopicity material is suitable for being produced on a large scale and has an extensive application prospect.
Owner:GUANGDONG UNIV OF TECH

A kind of preparation method of bonded stationary phase chiral chromatographic column

The present invention provides a bonding type stationary phase chiral chromatographic column preparation method, which comprises: preparing a silica gel bonded with the unsaturated double bond, loading the silica gel into a chiral chromatographic column, preparing a polysaccharide derivative bonded with the unsaturated double bond, injecting the polysaccharide derivative into the chiral chromatographic column in a solution form so as to make the polysaccharide derivative be uniformly adsorbed on the silica gel surface, and injecting an initiator solution into the chiral chromatographic column, such that the unsaturated double bond of the silica gel and the unsaturated double bond of the polysaccharide derivative are subjected to a polymerization reaction so as to form the bonding type stationary phase. According to the preparation method of the present invention, the adsorption step and the bonding step in the conventional preparation method are completed in the chromatographic column, such that the steps and the process are simplified, characteristics of simpleness, rapidness and high efficiency are provided, the prepared chiral chromatographic column stationary phase is uniform, the bonding type stationary phase chiral chromatographic column can be used for a variety of strong polar mobile phases, the column efficiency is high, and the separation effect is good.
Owner:WELCH MATERIALS (ZHEJIANG) INC
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