54results about How to "Uniform reaction system" patented technology

The invention relates to the fields of a novel chemical electric power source and a new energy material, and particularly discloses a graphene / molybdenum disulfide composite electrode material and a preparation method of the composite electrode material. The preparation method comprises the steps of: (1) preparing graphite oxide from graphite as a raw material by an oxidation and intercalation method; (2) dissolving prepared graphite oxide with deionized water, carrying out ultrasonic stripping to obtain a graphene oxide solution, then adding DMF (dimethyl formamide) and molybdate, finally adding a reducing agent, and dispersing uniformly to obtain a mixed solution; and (3) transferring the mixed solution to a reaction kettle, keeping the temperature in the temperature condition of greater than or equal to 180 DEG C for 5-10h, centrifuging and washing the product to remove DMF, and drying to obtain the graphene / molybdenum disulfide composite electrode material product. The preparation method of the graphene / molybdenum disulfide composite electrode material is simple, uniform in reaction system and low in production cost, and is particularly suitable for requirements of industrial large scale production; and the prepared product graphene / molybdenum disulfide composite electrode material has better electrochemical performances.

The invention relates to a single-component photo-curable and thermal-curable adhesive and a preparation method thereof. The single-component photo-curable and thermal-curable adhesive consists of the following components in percentage by weight: 1 to 10 percent of epoxy resin, 1 to 10 percent of vinyl epoxy resin, 15 to 60 percent of acrylate oligomer, 20 to 50 percent of acrylate active diluent, 2 to 7 percent of photoinitiator and 0.5 to 7 percent of latent curing agent. The preparation method for the single-component photo-curable and thermal-curable adhesive comprises the following stepsof: weighing a proper amount of epoxy resin, vinyl epoxy resin, acrylate oligomer, acrylate active diluent, photoinitiator and latent curing agent in percentage by weight, adding into a stirrer in turn, uniformly stirring in vacuum, naturally cooling to room temperature, and performing sealing packaging.

The invention discloses a preparing method of anatase type titanium dioxide nanometer powder, which comprises the following steps: dripping titanic acid tetrabutyrate resin in the deionized water solution of alcohol to form even titanium solution; adding 0.1-1mol / L composite dispersing liquid of amide polyacrylate, polyvinyl alcohol and carbowax in the titanium solution evenly; adding ammonia or sodium hydroxide in the even solution with titanium to do ultrasonic reaction; disposing reacted product through heat to obtain even grain size anatase type titanium dioxide nanometer powder.

The invention discloses an NT-ProBNP detection kit. The NT-ProBNP detection kit comprises a calibrator, a cleaning solution, a substrate solution, a pretreatment solution, an enzyme conjugate workingsolution and a magnetic bead conjugate working solution; the pretreatment solution contains pyridine, the enzyme conjugate working solution contains NT-ProBNP antibody labeled by enzyme, and the magnetic bead conjugate working solution contains magnetic beads labeled by the NT-ProBNP antibody. The NT-ProBNP detection kit can accurately measure NT-ProBNP in a whole blood sample, the lowest limit detection of the kit is 20 pg / ml, the linearity range is 20-5,000 pg / ml, the detection sensitivity is high, the linearity range is wide, and the result is accurate. The invention further discloses a using method of the NT-ProBNP detection kit. The NT-ProBNP detection kit is simple in using step, the detection time of an NT-ProBNP is shortened, and quick and sensitive detection of the NT-ProBNP is achieved.

The invention relates to a method for preparing high-purity tenofovir disoproxil fumarate. The method comprises the following steps: preparing (R)-4-methyl-1,3-dioxolan-2-one, synthesizing (R)-9-(2-hydroxypropyl)adenine, synthesizing a tenofovir hydrate, refining by virtue of dehydrating and synthesizing tenofovir disoproxil fumarate. The corresponding product is refined and the target product is detected by dehydrating through tenofovir and using alkali-soluble acid-analysis manners, the reaction, separation and purification processes in the subsequent steps are facilitated and the purity and yield of the product are increased. The technical scheme disclosed by the invention has the advantages of simple operation, relatively inexpensive selected reagents, small side effects, high yield and less three wastes produced in the reaction and the environmental protection is facilitated.

The invention discloses a one-component ultraviolet-light-anaerobic dual-curing adhesive. The adhesive comprises the following active ingredients in percentage by weight: 40-50% of epoxy acrylate, 15-20% of polyurethane acrylate, 30-35% of acrylics reactive diluents, 1-2% of photoinitiator, 0.5-1% of oxidizing agent, 0.1-0.5% of reducing agent, 0.1-0.5% of polymerization inhibitor, and 0.5-2% of accelerator. The one-component ultraviolet-light-anaerobic dual-curing adhesive has the advantage of entirely solving the difficulty that the photocuring adhesive cannot be entirely cured at the shading parts. In addition, the adopted resin contains acrylate and double bonds. Through the one-component ultraviolet-light-anaerobic dual-curing adhesive, the photocuring reaction and anaerobic curing reaction are well combined, the reaction system is uniform, the curing property is excellent, the binding reliability is high, the energy resource can be saved, and the application range is wide.

The invention provides a preparation method of 2-methyl-3-butyne-2-ol, and the preparation method is as follows: acetylene and acetone are used as raw materials, liquid potassium hydroxide is used as a catalyst, by use of the characteristics of the acetylene, the acetylene is dissolved in liquid ammonia for homogeneous reaction with the acetone to obtain crude 2-methyl-3-butyne-2-ol product, ammonia is flashed out, and the finished product is obtained by salting-out dehydration and then continuous rectification. The preparation method has the advantages of simple equipment, less investment, simple process, easy control, easy operation, less catalyst consumption, uniform reaction system, less adverse reactions, easy recovery and recycling of solvents, high product yield, short production period, high finished product yield, saving energy and low production cost.

The invention discloses a method for preparing calcium sulfate dihydrate whisker from mirabilite and calcium water. The normal-pressure acidification process, which is utilized to produce the dihydrate gypsum whisker from industrial calcium water and mirabilite, can effectively utilize industrial wastewater (calcium water and mirabilite), solves the problem of discharge of the industrial wastewater, achieves the goal of green chemical industry, and completely conforms to the national industrial policy. The gypsum whisker belongs to a high-tech environment-friendly product, has the advantages of wide market demand prospects and obvious economic benefits, and has sufficient and cheap raw material resources in the local region after being put into production. The method is simple and easy to implement, and can easily implement industrialization. Therefore, the project can obtain huge economic benefit and social benefit if being researched and finally constructed in the local region. The finally obtained calcium sulfate dihydrate whisker has the advantages of uniform shape, proper length-diameter ratio (50 above), high yield (up to 84%) and high whiteness (at least 96%).

The invention belongs to the field of in-vitro diagnostic reagent kits, and particularly relates to a myoglobin detection reagent kit and a method for applying the same. The myoglobin detection reagent kit comprises calibration products, reagents R1, enzyme conjugate working solution R2, magnetic bead conjugate working solution M, cleaning solution and chemiluminescent substrates. The reagents R1contain imidazole components, blood cells in whole blood can be quickly removed by the imidazole components, and accordingly the possibility that magnetic beads are swallowed by the blood cells can beeffectively prevented; the cleaning solution contains sodium lauryl sulfate components, accordingly, cleaning effects can be enhanced, and non-specific binding of the chemiluminescent substrates canbe prevented. The myoglobin detection reagent kit and the method have the advantages that finger peripheral whole blood or anticoagulant venous whole blood can be directly used as a to-be-detected sample for the myoglobin detection reagent kit, the whole blood sample can be directly detected without being pretreated, accordingly, the detection speed can be greatly increased, operation steps can besimplified, the application range of the myoglobin detection reagent kit can be expanded, and large-scale popularization and application can be facilitated.

The invention discloses a preparing method of alumina nanometer powder, which comprises the following steps: adding organic dispersant solution in the initial reacting solution; forming even aluminium dispersing reacting solution and alkaline dispersing reacting solution; adding aluminium dispersing reacting solution in the alkaline dispersing reacting solution; proceeding ultrasonic chemical reaction; obtaining slurry suspension; washing slurry suspension through ultrasound; drying; proceeding heat disposal to obtain the alumina nanometer powder.

The invention discloses a cTnI detection kit which comprises a calibration product, a cleanout fluid, a substrate solution, a pretreatment liquid, an enzyme conjugate working solution and a magnetic bead conjugate working solution, wherein the pretreatment liquid contains imidazole; the enzyme conjugate working solution contain an enzyme labeled cTnI antibody; and the magnetic bead conjugate working solution contains cTnI antibody labeled magnetic beads. The cTnI detection kit can realize accurate determination of cTnI in a whole blood sample, the detection steps are simplified, and the detection efficiency is improved. The lowest detection limit of the kit is 0.02ng / ml, the linear range is 0.02-50ng / ml, the detection sensitivity is high, the linear range is wide, and the detection resultis accurate. The invention further discloses a using method of the cTnI detection kit. The using method is simple in using steps, the detection time of the cTnI is effectively shortened, and rapid andsensitive detection of the cTnI is realized.

The invention discloses a CK-MB detection kit which comprises calibrator, cleaning fluid, a substrate solution, a pretreatment solution, an enzyme conjugate working solution and magnetic bead conjugate working solution, wherein the pretreatment solution contains imidazole, the enzyme conjugate working solution contains an enzyme marked CK-MB antibody, and the magnetic bead conjugate working solution contains CK-MB antibody marked magnetic beads. By means of the CK-MB detection kit, accurate measurement of CK-MB in a whole blood sample can be achieved, detection steps are simplified, and a detection efficiency is improved. The lowest detection limit of the kit is 1ng / ml, a linearity range is 1 to 300ng / ml, detection sensitivity is high, the linearity range is wide, and detection results areaccurate. The invention further discloses a use method of the CK-MB detection kit. Use steps of the use method are simple, CK-MB detection time is effectively shortened, and quick and flexible detection of the CK-MB is benefit to achieve.

This invention discloses a method for preparing diacylglycerol by interesterification. The method solves the problems of complex process, low lipase utility and long reaction time faced by the present technique, and has such advantages as simple process, high lipase utility, high reaction rate, mild reaction conditions and long bio-enzyme life. The method comprises: mixing triacylglycerol and monoacylglycerol at a mol ratio of 1:(1-15), adding bio-enzyme 2-30 wt.% of total reactants, performing interesterification by lipase catalysis at 30-90 deg.C in an intermediate reactor or a continuous reactor, and performing molecular distillation to remove excess triacylglycerol and monoacylglycerol and obtain diacylglycerol.

The invention relates to a method for preparing silver nanoparticle filled microporous carbon spheres, which can realize uniform nanoparticle filling of the microporous carbon spheres. The invention also provides the silver nanoparticle filled microporous carbon spheres and use thereof as a catalyst. The preparation method comprises the following steps of: adding 0.2 to 0.3g of microporous carbonspheres into 20 to 100ml of 0.2 to 2.5mM ammonical silver solution for soaking; adding a reducing agent into the soaked microporous carbon sphere suspension; and heating by using microwaves for 2 to 10 minutes to reduce ammonical silver ions to obtain the silver nanoparticle filled microporous carbon spheres. The silver nanoparticle filled microporous carbon spheres can be used as a catalyst. The obtained silver nanoparticle filled microporous carbon spheres have the submicron-scale diameter and the pore diameter of less than 2nm; and the filled silver in a form of monodispersed spherical nanoparticles is uniformly dispersed in the microporous carbon spheres, has the controllable diameter in a range of 2 to 50nm, and accounts for 10 to 56 weight percent of silver nanoparticle filled microporous carbon spheres.

The invention belongs to the field of in vitro diagnosis kits, and concretely relates to a D-dimer detection kit and a use method thereof. The D-dimer detection kit comprises a calibration product, areagent R1, an enzyme conjugate working solution R2, a magnetic bead conjugate working solution M, a cleaning solution and a chemiluminescent substrate, and the reagent R1 contains an imidazole component, so blood cells in the whole blood can be quickly eliminated to effectively avoid the possibility of blood cells swallowing magnetic beads. The kit can directly use fingertip whole blood or anticoagulant venous whole blood as a sample to be tested, and can directly detect the whole blood sample without preprocessing the whole blood sample, so the detection speed is greatly improved, the operation steps are simplified, the application range of the kit is enlarged, and large-scale promotion and application are easy.

The present invention discloses a multi-stage polymerization method for polylactic acid preparation by ring-opening polymerization of lactide, the method is as follows: molten L-lactide and a composite catalyst system are fully mixed in a ring-type static mixing reaction device comprising a corrugated plate type static mixer, the reaction device temperature is raised for initial ring-opening polymerization, then the reaction device temperature is further raised for L-polylactic acid preparation. According to the multi-stage polymerization method, by adjusting of temperature and reaction time of different stages and adjusting of reaction system flow rate and shear rate, high optical purity and molecular weight polylactic acid with the distribution meeting the requirements of spinning can be obtained. Compared with the conventional polymerization method, the multi-stage polymerization method has the advantages of simple polymerization equipment, low energy consumption, low investment, short reaction time, controllable product properties, high production magnification degree and the like.

The invention relates to a rapid analysis method for determining formaldehyde in electronic cigarette liquid. The method comprises the following steps that firstly, a dispersant is added to an electronic cigarette liquid sample, then a DNPH derivatization reagent and an acid solution are added to perform derivatization reaction, an alkaline reagent and an internal standard substance are added, and finally the formaldehyde content in the electronic cigarette liquid is determined through LC-MS / MS analysis. The method is high in sensitivity, strong in anti-interference performance and good in repeatability, the pretreatment process is simple and rapid, and the method is suitable for detection of electronic cigarette liquid samples on a large scale.

The invention relates to a high-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide material with functions of neutron absorption and nuclear radiation prevention, and a preparation method thereof, belongs to the field of functional polymer materials, and provides a boron-containing two-dimensional polyarylene sulfide material with a neutron absorption function, wherein the structural formula of the two-dimensional polyarylene sulfide material is represented by a formula I, and in the formula I, a molar ratio of m1 to m2 is 1-50:99-50. According to the invention, themelting point of the high-temperature-resistant corrosion-resistant two-dimensional polyarylene sulfide film with the functions of neutron absorption and nuclear radiation prevention is higher than 280 DEG C, no solvent exists at a temperature of less than 200 DEG C, the fast neutron absorption coefficient is 0.9 when the film is overlapped to a thickness of 8 CM, the gamma ray resistance can reach 10<9>, the tensile strength is larger than 60 MPa, the bending strength reaches 80 MPa, and the product is a novel special macromolecule material capable of absorbing and shielding high-energy rays.

The invention relates to a polyurethane microporous elastomer, polyether polyol is adopted as a reaction raw material and is matched with other components, so that the obtained polyurethane microporous elastomer has excellent tensile strength, tearing strength, elongation at break, wear resistance and folding resistance under the condition of relatively low density. The invention also provides a preparation method of the elastomer.

The invention relates to a method for rapid analysis determination of acetaldehyde in an electronic cigarette liquid, wherein the method comprises the following steps: firstly, adding a dispersing agent in an electronic cigarette liquid sample; then adding a DNPH derivatization reagent and an acidic solution, carrying out a derivatization reaction, and then adding an alkaline reagent and an internal standard substance; and finally analyzing and determining the content of acetaldehyde in the electronic cigarette liquid by using LC-MS / MS. The method has the advantages of high sensitivity, strong interference resistance, good repeatability, and simple and fast pretreatment process, and is suitable for detection of a large number of electronic cigarette liquid samples.

The invention provides a preparation method of a buffalo milk fat natural flavoring base material, and belongs to the technical field of food processing. The preparation method comprises the following steps of using raw buffalo milk or buffalo milk fat obtained through degreasing the raw buffalo milk as an enzymolysis substrate, performing pasteurization, and performing enzymolysis sequentially through flavored protease and lipase so as to obtain uniform semi-solid buffalo milk fat natural flavoring base material. The preparation method is simple in operating sequences and uniform in reaction systems; the product namely the flavoring base material is rich and full in flavor, rich in micromolecular peptide, amino acids and fatty acid, free from bad flavor of bitter taste and the like, and stable in quality; and the flavoring base material can be wholly applied, can also be used in a manner that after the flavoring base material is centrifuged, milk fat phases are taken to be independently used, and the flavoring base material is widely applied, and is suitable for dairy products and other various healthy foods of which the milk fragrance flavor needs to be improved.

The invention provides a GP73 antigen silicon-based magnetic bead conjugate as well as a competition method GP73 quantitative determination kit formed by taking the conjugate as one of the components and matching with other components. The kit disclosed by the invention consists of a Golgi protein 73 (GP73) antigen silicon-based magnetic bead conjugate working solution, a Golgi protein 73 (GP73) calibration material, an alkaline phosphatase labeled Golgi protein 73 (GP73) monoclonal antibody working solution, a cleaning solution and a chemiluminescence substrate. Meanwhile, the invention provides a method for preparing the GP73 antigen silicon-based magnetic bead conjugate and a method for preparing each component in the kit. The method comprises the following steps: preparing the GP73 antigen silicon-based magnetic bead conjugate working solution, preparing an enzyme-labeled antibody, preparing the calibration material, preparing the cleaning solution and preparing the chemiluminescence substrate. The kit provided by the invention can be mainly applied to diagnosis of primary hepatic carcinoma and has the advantages of high sensitivity, wide linear range, hook effect avoidance, low cost, short detection time consumption and the like.

The present invention discloses a multi-stage polymerization method for polylactic acid preparation by ring-opening polymerization of lactide, the method is as follows: molten L-lactide and a composite catalyst system are fully mixed in a ring-type static mixing reaction device comprising a corrugated plate type static mixer, the reaction device temperature is raised for initial ring-opening polymerization, then the reaction device temperature is further raised for L-polylactic acid preparation. According to the multi-stage polymerization method, by adjusting of temperature and reaction time of different stages and adjusting of reaction system flow rate and shear rate, high optical purity and molecular weight polylactic acid with the distribution meeting the requirements of spinning can be obtained. Compared with the conventional polymerization method, the multi-stage polymerization method has the advantages of simple polymerization equipment, low energy consumption, low investment, short reaction time, controllable product properties, high production magnification degree and the like.

The invention discloses a preparation method of a polyether ester type melt spinning spandex slice, which comprises the following steps: firstly, by taking polyether polyol as an initiator, initiating epsilon-caprolactone to be subjected to ring opening polymerization to form polyether-epsilon-caprolactone polyol, then adding the polyether-epsilon-caprolactone polyol, a micromolecule chain extender and isocyanate into a double-screw reaction extruder, and carrying out extrusion granulation to obtain the polyether ester type melt spinning spandex slice. The melt-spun spandex slice prepared by the method has the comprehensive advantages of polyester type polyurethane and polyether type polyurethane, the reaction process is uniform and high in controllability, the product has the characteristics of high molecular weight and narrow molecular weight distribution, and the problems of poor compatibility, non-uniform reaction rate and the like of physical mixing use of poly epsilon-caprolactone polyol and polyether polyol are solved; and the spandex filament melt-spun by the slice has the characteristics of high molecular weight and narrow molecular weight distribution, and the spandex filament melt-spun by the slice has the advantages of high strength, good rebound resilience and good heat resistance.

The invention relates to a preparation method of cycloxaprid. The preparation method comprises steps as follows: (1), concentrated sulfuric acid is added to a reaction kettle A, guanidine nitrate is added, and the mixture is heated to 40-42 DEG C and reacts for 30-40 min; (2), after the reaction, nitroguanidine as an intermediate is obtained through ice hydrolysis, cooling and filtering; (3), acetonitrile as a solvent, paraformaldehyde and nitroguanidine obtained in the step (2) are added to a reaction kettle B in sequence, stirred uniformly and heated to 80-85 DEG C, 2-chloro-5-chloromethylpyridine is dropwise added to a reaction system slowly, and the temperature is controlled to be lower than or equal to 80 DEG C; (4), after 2-chloro-5-chloromethylpyridine is dropwise added, the temperature is preserved for 8-10 h under a temperature system lower than or equal to 80 DEG C; (5), after the reaction, cooling is performed, solids are filtered out, and cycloxaprid is obtained after drying. The preparation method of cycloxaprid has the advantages as follows: purity of the cycloxaprid product can be guaranteed, and yield of the cycloxaprid product can be increased.

The invention relates to a method for rapid analysis determination of propyl aldehyde in an electronic cigarette liquid, wherein the method comprises the following steps: firstly, adding a dispersing agent into an electronic cigarette liquid sample; then adding a DNPH derivatization reagent and an acid solution, carrying out a derivatization reaction, and then adding an alkaline reagent and an internal standard substance; and finally analyzing and determining the content of propyl aldehyde in the electronic cigarette liquid by LC-MS / MS. The method has the advantages of high sensitivity, strong interference resistance, good repeatability, and simple and fast pretreatment process, and is suitable for detection of a large number of electronic cigarette liquid samples.

The invention relates to the field of synthesis of inorganic compounds, in particular to a synthesis method of trans-Dichlorodiammine palladium (II). The method includes the following steps: dissolving a disodium tetrachloropalladate solution in anhydrous ethanol, and then introducing high-purity ammonia gas for reaction to generate trans-Dichlorodiammine palladium (II) through one step; leaving the solution system to stand after the reaction for aging, and then filtering; washing and drying the precipitate to obtain trans-Dichlorodiammine palladium (II). The synthesis method provided by the invention uses disodium tetrachloropalladate as a starting material and adopts a one-step synthesis method, so that the process is simple; high-purity ammonia gas is adopted, and precise control of the reaction system is achieved, so that the product purity is improved; an ultrasonic reactor is adopted, and the reaction efficiency is improved, so that the product yield reaches 99.5% or above; the product obtained through the reaction is uniform in particle size distribution, fine and loose in particles, and easy to wash and filter, so that the product purity is as high as 99.9% or above.

The invention relates to a two-dimensional polyarylene sulfide material with high temperature resistance, corrosion resistance, neutron absorption function and nuclear radiation protection and a preparation method thereof, belonging to the field of functional polymer materials. The present invention provides a boron-containing two-dimensional polyarylene sulfide material with a neutron-absorbing function. The structural formula of the two-dimensional polyarylene sulfide material is shown in formula I. In formula I, the molar ratio of m1 to m2 is 1 ~50:99~50. The obtained high-temperature-resistant and corrosion-resistant two-dimensional polyarylene sulfide film with neutron absorption function and anti-nuclear radiation has a melting point greater than 280°C and has no solvent below 200°C. The fast neutron absorption coefficient of the film is 0.9 when the film is overlapped to a thickness of 8 cm. Resistance to gamma rays up to 10 9 , its tensile strength is greater than 60MPa, and its bending strength reaches 80MPa. It is a new type of special polymer material that can absorb and shield high-energy rays.