99 results about "Disodium hydrogen phosphate dodecahydrate" patented technology

The invention relates to a method for controlling the setting time and early hydration speed of magnesium potassium phosphate cement, and belongs to an early strength quick hardening cement cementing material. A composite retarder can effectively adjust the setting time of magnesium potassium phosphate cement slurry, and the setting time of the magnesium potassium phosphate cement slurry can be effectively controlled in the range of 10 minutes to 6 hours by adjusting the content of chloride and disodium hydrogen phosphate dodecahydrate in the composite retarder, so that the problems of a limited retarding effect, low operability and the like are solved; the composite retarder can change the hydration heat release characteristic of the magnesium potassium phosphate cement, the magnesium potassium phosphate cement slurry doped with the conventional retarder borax has a hydration heat release peak at the initial reaction stage and has a high heat release speed and large heat release amount, and the magnesium potassium phosphate cement doped with the composite retarder has two hydration heat release peaks and has small hydration heat release amount at the initial hydration stage; and the doped composite retarder improves the microstructure and later strength of a hardened magnesium potassium phosphate cement body, so that enough construction operable time can be ensured while the magnesium potassium phosphate cement slurry has early strength and is quickly hardened.

The invention discloses a cleaning solution for a chemiluminescence immunity analyzer. The cleaning solution is prepared from sodium dihydrogen phosphate dihydrate, disodium hydrogen phosphate dodecahydrate, sodium chloride, potassium chloride, a surfactant, a preservative and deionized water; in the cleaning solution, the concentration of the sodium dihydrogen phosphate dihydrate is 0.70 to 2.8g/L, the concentration of the disodium hydrogen phosphate dodecahydrate is 0.80 to 4.9g/L, the concentration of the sodium chloride is 7.5 to 9.5g/L, the concentration of the potassium chloride is 0.05 to 1g/L, the concentration of the surfactant is 1 to 7ml/L and the concentration of the preservative is 0.1 to 0.5ml/L; the pH value of the cleaning solution is 6.3 to 7.6. The cleaning solution disclosed by the invention is simple to prepare, low in cost, high in accuracy and precision and good in repeatability.

Belonging to preparation methods of energy storage microcapsule materials, the invention provides an inorganic hydrated salt phase change energy storage microcapsule and a preparation method thereof. The energy storage microcapsule includes an inorganic hydrated salt serving as the core material and an inorganic material serving as the wall material. The core material is one or more of potassium fluoride dehydrate, sodium acetate trihydrate, sodium thiosulfate pentahydrate, calcium chloride hexahydrate, magnesium sulfate heptahydrate, barium hydroxide octahydrate, sodium sulfate decahydrate, sodium sulfate decahydrate, disodium hydrogen phosphate dodecahydrate, ammonium aluminium sulfate dodecahydrate, aluminum potassium sulfate dodecahydrate, and aluminum sulphate ocatadecahydrate. The wall material is one or more of silicon dioxide, calcium carbonate, alumina and titanium dioxide. The core material accounts for 30%-80% of the mass of the microcapsule composite material, and the wall material accounts for 20%-70% of the mass of the microcapsule energy storage material. The prepared phase change energy storage microcapsule material has a phase transition temperature of 25-100DEG C and a diameter of 0.1-50 micrometers. The phase change energy storage microcapsule has the advantages of high encapsulation rate, good sealing performance, large phase change potential heat value, and simple preparation method, and has great industrial application prospect.

The invention relates to a preparing method of an inorganic hydrous salt phase change microcapsule energy-storage material and belongs to preparing methods of energy-storage materials. The energy-storage material comprises a core material and a wall material, wherein the core material is prepared from one or more of calcium chloride hexahydrate, sodium sulfate decahydrate, sodium thiosulfate pentahydrate, disodium hydrogen phosphate dodecahydrate, sodium acetate trihydrate and sodium carbonate decahydrate inorganic hydrous salt, and the wall material is prepared from one or more of polystyrene, polymethyl methacrylate, poly(ethyl acrylate), polyurethane, cellulose acetate butyrate (CAB) and a diphenylmethane diisocyanate polymer, the core material accounts for 30-80% of the microcapsule energy-storage material by mass, and the wall material is prepared from the polymer and accounts for 20-70% of the microcapsule energy-storage material by mass. The phase change point of the obtained phase change microcapsule energy-storage material ranges from 20 DEG C to 90 DEG C, and the particle size ranges from 1 micrometer to 100 micrometers. The phase change microcapsule energy-storage material prepared with the method is high in encapsulation rate, good in sealing performance, large in phase change latent heat value, simple in preparing method and large in industrial application prospect.

The invention discloses a preparation method of nano-flower-like cobalt-nickel phosphate growing on foam nickel. The method comprises the following steps: 1) placing each piece of foam nickel in an organic cleaning agent for ultrasonic cleaning to remove the greasy dirt on the surface of the foam nickel, and then placing the foam nickel in a dilute acid solution for treatment; 2) respectively dissolving hexahydrate cobalt chloride, hexahydrate nickel chloride, urea and ammonium fluoride in secondary deionized water, and stirring to dissolve to get a solution 1; 3) transferring the solution 1 into a reactor with one piece of a foam nickel polytetrafluoroethylene lining treated in the step 1) for hydrothermal reaction to obtain a nano-flower-like cobalt-nickel carbonate hydroxide hydrate precursor growing on the foam nickel; and 4) transferring the precursor obtained by the step 3) into a reactor with a lining filled with Disodium hydrogen phosphate dodecahydrate dissolved in 50mL of the secondary deionized water, using a hydrochloric acid solution to adjust PH to 8.5 for reaction to obtain the nano-flower-like cobalt-nickel phosphate growing on the foam nickel. The nano-flower-like cobalt-nickel phosphate has excellent catalytic oxygen release performance, and can be used for catalytic electrolysis of water electrode materials. Compared with a noble metal RuO2 catalyst, the catalyst has low cost and good stability.

The invention relates to a process for preparing disodium hydrogen phosphate from a glyphosate mother liquor. The process comprises an oxidization step, a crystallization step and a separation step, wherein the oxidization step comprises oxidizing organic phosphorus compounds and phosphorous acid in the glyphosate mother liquor wastewater into positive phosphate ions under the reaction conditions of a temperature ranging from 240 to 320 DEG C and pressure ranging from 6.0 to 15.0 Mpa by taking the oxygen in the air as an oxidizing agent, wherein the oxygen supply amount is 0.7 to 1.3 times of the total amount of COD (Chemical Oxygen Demand) of the glyphosate mother liquor; the crystallization step comprises cooling the oxidized liquid obtained in the oxidization step to the range from minus 5 to 12 DEG C and generating solid-state disodium hydrogen phosphate dodecahydrate crystals under the condition that pH ranges from 7.0 to 10.5; the separation step comprises performing solid-liquid separation on the oxidized liquid crystallized in the crystallization step.

The invention provides cross linking type methyl acrylate and vinyl acetate emulsion and a preparation method thereof. The cross linking type methyl acrylate and vinyl acetate emulsion is prepared from 160 to 200 weight parts of vinyl acetate, 75 to 140 weight parts of butyl acrylate, 60 to 110 weight parts of acrylic acids, 5 to 20 weight parts of polyvinyl alcohol 1788, 5 to 8 weight parts of nonionic emulsifiers OP-10, 2 to 4 weight parts of neopelex, 5 to 7 weight parts of disodium hydrogen phosphate dodecahydrate, 0.7 to 1.5 weight parts of ammonium persulfate and 550 to 750 weight parts of vaal water. The preparation method comprises the following steps: making monomers into pre-emulsion; dissolving the ammonium persulfate to obtain triggering agent solution; dissolving the polyvinyl alcohol 1788; adding the emulsifiers and pH regulators; and carrying out intermittent reaction. The invention has the advantages of high water resistance performance, high heat resistance performance, high ageing resistance performance, good initial adhesion, high adhesion strength, no toxicity and harmlessness.

The invention discloses a low-temperature inorganic phase-change heat storage material and a preparation method thereof. The low-temperature inorganic phase-change heat storage material is prepared from the following raw materials in percentage by mass: 85-90% of disodium hydrogen phosphate dodecahydrate, 5-10% of potassium chloride, 5-8% of sodium metasilicate nonahydrate and 1-5% of graphite, totaling 100%. The phase-change temperature of the inorganic phase-change heat storage material is 25 DEG C or so, the phase-change latent heat value is 170J/g or so, and the degree of supercooling is 0-0.5 DEG C; and the inorganic phase-change heat storage material does not have the phenomenon of phase separation after long-term usage, is suitable for agricultural production greenhouses and agricultural buildings, and can be used for other heat storage and cold storage systems.

The invention discloses an ectopic pregnancy and pregnant days colloid gold detection agent and manufacturing method thereof used for the problem of fast detection for pregnancy, comprising a piece of detecting test paper and urine sample treatment solution; wherein, the detecting test paper consists of a base plate, a cellulose nitrate membrane, a gold label anti-Beta HCG monoclone antibody layer, an Alpha-HCG monoclone antibody line, a sheep anti-rat polyclonal antibody line, an absorbing pad and a sample pad; the matching composition of the urine sample treatment solution is that: 12.5 to 18.0 portions of disodium hydrogen phosphate dodecahydrate, 1.2 to 1.7 portions of sodium dihydrogen phosphate dihydrate, 40.0 to 48.0 portions of sodium chloride and 4600 to 5300 portions of distilled water; the ectopic pregnancy and pregnant days colloid gold detection agent and manufacturing method of the invention are characterized by fast and simple detection, the operation of blood-drawing detection for 2 to 6 hours can be replaced by 2 to 3 minutes with time-saving, manual-saving and cost-saving; besides, the ectopic pregnancy and pregnant days colloid gold detection agent and manufacturing method thereof have the advantages of detecting ectopic pregnancy and pregnant days in a semiquantitative way, etc., and can be used for external detection of the pregnant condition and artificial abortion and assisted diagnosis.

The invention relates to external gel for lauromacrogol and a preparation method of the external gel. The external gel is prepared from the components of urea, lauromacrogol, an aloe extract, benzalkonium chloride, sodium alginate, potassium sorbate, menthol, glycerinum, disodium hydrogen phosphate dodecahydrate, sodium hydrogen phosphate dihydrate and purified water. The external gel has the characteristics that lauromacrogol with the effects of quickly relieving itching and pain and diminishing inflammation and swelling is combined together with the aloe extract with the effects of refiningpores and repairing skin, the external gel adopts a gel film manner to treat patients suffering from burning of first degree and second degree, mosquito biting and bruise; and the external gel achieves the effects which are not reached by similar drugs for treating burning and mosquito biting at present, and no similar anti-inflammatory products or related inventions appear at present.

The invention discloses a heat accumulation capsule for decreasing the temperature of main stream smoke of cigarettes. The heat accumulation capsule comprises a wall material and a core material, wherein the core material contains an inorganic phase-change material; and the wall material is polylactic acid; and the inorganic phase-change material is disodium hydrogen phosphate dodecahydrate. The invention further discloses a preparation method of the heat accumulation capsule. The preparation method comprises the steps of simultaneously dropwise adding a core material solution and a wall material solution into concretion liquid respectively through inner holes of an electrostatic spinning coaxial needle head and gaps between inner and outer holes of the electrostatic spinning coaxial needle head, stirring, and carrying out solid-liquid separation, washing, cooling and concretion. The preparation method is different from existing commonly adopted chemical methods, and the inorganic phase-change material is coated by virtue of a physical method. Compared with the chemical methods, the preparation method has the advantages that the complicated chemical reaction steps are reduced, theovermuch chemical solvent is not used, a device is simple, and the particle size of the heat accumulation capsule is controllable.

The invention provides a culture method for inducing mesenchymal stem cell to differentiate for forming osteocyte under the condition without CO2. The culture method comprises the following steps of: culturing the third-generation human mesenchymal stem cell under the conditions of 5 percent of CO2 and 37 DEG C and standing overnight; after the cell is completely attached to the wall and grows until 80 percents of cell is fused, replacing an inductive culture medium and culturing under the conditions of 37 DEG C without CO2 for 14-21 days to obtain osteoblast, wherein the inductive culture medium is formed by adding fetal calf serum, penicillin, streptomycin, hexadecadrol, beta-sodium glycerophosphate and vitamin C in a basal medium and is prepared from the following components calculatedby final concentration: 0.41g/L of sodium bicarbonate, 1.5g/L of disodium hydrogen phosphate dodecahydrate, 0.07g/L of monopotassium phosphate and 8.17g/L of sodium chloride; and solvent of the inductive culture medium is an L-DMEM cell culture medium free of sodium bicarbonate. According to the novel culture medium formula provided by the invention, the mesenchymal stem cell osteoblast can be normally induced to differentiate; the differentiation effect is favorable, so that the consumption of equipment is reduced; and the novel culture medium formula is suitable for cell culture and research on induced differentiation under the condition without CO2.

The invention belongs to the technical field of protein preservation, and relates to a buffer solution for storing superparamagnetic particles and protein connecting substances thereof and a preparation method of the buffer solution. The buffer solution for storing the superparamagnetic particles and the protein connectors thereof comprises the following components of: disodium hydrogen phosphate dodecahydrate, sodium dihydrogen phosphate, sodium chloride, bovine serum albumin, cane sugar, xanthan gum, sodium alginate and gelatin. According to the buffer agent provided by the invention, micron-sized superparamagnetic particles and connecting substances of the superparamagnetic particles and specific proteins can be stored for a long time, so that the micron-sized superparamagnetic particles and the connecting substances do not lose efficacy due to physical effects (such as sedimentation and hardening); the buffer solution is a special buffer solution, and is used for long-term storage of superparamagnetic particles and protein connecting substances of the superparamagnetic particles.

A sample diluting solution for ELISA is composed of a serum protein, adenosine diphoshate, ethylene diamine tetraacetic acid, a salt buffering solution, a liquid antiseptic and purified water. A preparation method of the sample diluting solution comprises the following steps: weighing sodium dihydrogen phosphate dehydrate, disodium hydrogen phosphate dodecahydrate and sodium chloride, placing above weighed components in a container, measuring purified water, adding purified water into the container, and stirring until complete dissolving to obtain the salt buffering solution; weighing the serum protein, and adding the serum protein into the salt buffering solution; and adding adenosine diphoshate, ethylene diamine tetraacetic acid and the liquid antiseptic, stirring until complete dissolving, and adding purified water to a constant volume in order to obtain the sample diluting solution for ELISA. Compared with sample diluting solutions generally used in the industry at present, the sample diluting solution for ELISA disclosed in the invention has the advantages of sample protection, effective reduction of the interference of matrix effect, and improvement of the accuracy and repeatability of a detection result; and relevant experiments verify that the sample diluting solution for ELISA has a substantial effect.

The invention discloses a preparation method of a disodium hydrogen phosphate heat storage system suitable for greenhouses. The pure disodium hydrogen phosphate dodecahydrate (Na2HPO4.12H2O), of which the melting point is 35.5 DEG C, can not be directly used for greenhouses as a heat storage material. The method comprises the following steps: by using Na2HPO4.12H2O as a heat storage medium, adding KCl to lower the melting point to 25 DEG C or so, and adding a nucleator graphite and a thickener sodium silicate into the heat storage matrix to prepare the phase-change heat storage material with stable performance. The phase-change temperature of the disodium hydrogen phosphate heat storage system is 22-25 DEG C or so, and the latent heat density is 180.2 J/g. The disodium hydrogen phosphate heat storage system has the characteristics of proper phase-change temperature, high phase-change latent heat value, small volume expansion rate, no degree of supercooling and the like, and is a favorable inorganic salt heat storage material for greenhouse production.

The invention relates to an ELISA (enzyme-linked immunosorbent assay) chromogenic substrate of which the pH value is 4.0-4.5. The ELISA chromogenic substrate is composed of 0.9-1.5 g/L citric acid monohydrate, 25-30 g/L disodium hydrogen phosphate dodecahydrate, 3-3.5 g/L tetramethyl benzidine hydrochloride, 0.15-0.3 g/L disodium edetate, glycerol (the volume ratio of the glycerol to the chromogenic substrate is 0.01-0.02), 0.095-0.1 g/L sodium pyrophosphate, 0.008-0.01 g/L sodium stannate, pH regulator and water. By using the tetramethyl benzidine hydrochloride as the main chromogenic component, the chromogenic substrat can be directly completely dissolved in a water solution, has high stability, and does not need mixing in advance, thereby simplifying the operation steps and reducing the differences among batches.

The invention provides a culture medium for a light-emitting bacterium. Each litre of the culture medium contains 5-10 g of tryptone, 5-10 g of beef extract, 2-4 mL of glycerol, 0.3-1.5 g of potassium dihydrogen phosphate, 11-13 g of disodium hydrogen phosphate dodecahydrate and 21-35 g of sodium chloride. The invention further provides a method for culturing the light-emitting bacterium by using the culture medium. When the method is used for culturing the light-emitting bacterium, the volume of inoculated bacterium liquid is 2% of that of the culture medium. The bacterium content of the light-emitting bacterium in the liquid culture medium can stably surpass 10 to the power of 8 CFU/mL, so that the research and application of the light-emitting bacterium and the production of freeze-dried powder thereof are facilitated; and the culture medium for the light-emitting bacterium is low in cost, so that popularization and application of the light-emitting bacterium are facilitated.

The invention discloses a povidone-iodine solution with enhanced stability and a preparation method thereof. The povidone-iodine solution consists of povidone iodine, sodium dihydrogen phosphate, disodium hydrogen phosphate dodecahydrate, potassium iodate, lauryl sodium sulfate and purified water, and the concentrations of the raw materials are as follows: 5-20 g/L of povidone iodine, 1-10 g/L ofsodium dihydrogen phosphate, 0.5-2 g/L of disodium hydrogen phosphate dodecahydrate, 0.2-1.0 g/L of potassium iodate, and 1-10 g/L of lauryl sodium sulfate, and the pH of a sodium hydroxide solution is adjusted to 5.20-5.30. The sodium dihydrogen phosphate and the disodium hydrogen phosphate dodecahydrate are used as a pH value adjusting buffer pair, so that the acid-base balance of the solution can be maintained, and a buffer effect can be achieved. The potassium iodate and the lauryl sodium sulfate are used as pH stabilizers, the sodium hydroxide is used as a pH regulator, and the pH value of the povidone-iodine solution can be controlled within a specified range, so that the stability of the effective iodine content is ensured, and the bactericidal efficacy of the povidone-iodine solution is maintained.

The invention belongs to the technical field of freeze-drying, and particularly relates to a freeze-drying method of neuron-specific enolase. The freeze-drying method comprises the following steps: dissolving NSE in a buffer solution to prepare an NSE reagent, and freeze-drying the NSE reagent in a vacuum freeze-drying machine; wherein the buffer solution is prepared from the following parts: trihydroxymethyl aminomethane, KCl, disodium hydrogen phosphate dodecahydrate, magnesium sulfate, trehalose and BSA (Bovine Serum Albumin). The freeze-drying method can effectively preserve the neuron-specific enolase and is beneficial to keeping the maximum activity of the neuron-specific enolase.

The invention discloses a method of treatment on vitamin production wastewater, which comprises: (1) performing catalytic wet-type oxidization on the vitamin production wastewater; (2) freeze-crystallizing the oxidized liquid of the vitamin production wastewater, and performing solid-liquid separation to obtain disodium hydrogen phosphate dodecahydrate; (3) performing membrane concentration on theseparated liquid after the freeze crystallization; (4) performing chemical dephosphorization to the permeated liquid after the membrane concentration; (5) evaporating the permeated liquid after the chemical dephosphorization to remove NaCl salt; (6) performing catalytic wet-type oxidization on the evaporated waste liquid; (7) biochemically treating an evaporative condensate of the oxidized wasteliquid. The method is used for treating the wastewater mainly with the catalytic wet-type oxidization technology with combination of crystallization, membrane concentration and the like, so that the method can recycle the salts from the wastewater and achieves the object of zero-emission.

The invention discloses a sodium acetate trihydrate phase change heat storage material and a preparation method thereof. The sodium acetate trihydrate phase change heat storage material comprises the following components in percentage by mass: 93.5-96% of sodium acetate trihydrate, 1-2% of disodium hydrogen phosphate dodecahydrate, 1-3% of carboxymethylcellulose and 1-2.5% of expanded graphite. According to the invention, sodium acetate trihydrate is taken as a main body material, carboxymethyl cellulose is taken as a thickening agent, disodium hydrogen phosphate dodecahydrate is taken as a nucleating agent, expanded graphite is taken as a heat-conducting filler, and phase separation of sodium acetate trihydrate is inhibited by regulating and controlling the proportions of the components, so that the supercooling degree of the material is effectively reduced, the stability is good, phase separation is avoided, and the material has high latent heat and heat conductivity coefficient.

The invention discloses a potassium magnesium phosphate cement-based inorganic rapid repair material for ballasted tracks. The inorganic rapid repair material is prepared from the following componentsby mass percent: 58-64% of potassium magnesium phosphate cement-based gelatinizing agent powder, 35-41% of quartz sand and 0.8-1.0% of polypropylene fibers; the potassium magnesium phosphate cement-based gelatinizing agent powder is prepared from the following components by mass percent: 88-92% of the potassium magnesium phosphate cement, 7.7-11.7% of silica fume and 0.2-0.3% of lignosulfonate; the potassium magnesium phosphate cement is prepared from the following components by mass percent: 70-75% of overburnt magnesium oxide powder, 17-22% of potassium dihydrogen phosphate and 7-12% of a compound retarder; the compound retarder is prepared from borax, disodium hydrogen phosphate dodecahydrate, an inorganic chlorine salt and polyphosphate. The prepared potassium magnesium phosphate cement-based inorganic rapid repair material has the characteristics of being rapid in setting and hardening speed, high in early strength, strong in volume stability, high in abrasive resistance, good incohesiveness, and the like, can be firmly bonded with old concrete and is higher in compatibility with the old concrete; the inorganic rapid repair material provided by the invention is simple in preparation process, convenient to use, energy-saving and environmentally-friendly.

The invention discloses a weather-resistant water-based adhesive and a preparation method thereof. The weather-resistant water-based adhesive is prepared from deionized water, sodium acetate, disodium hydrogen phosphate dodecahydrate, a protective colloid, tartaric acid, a crosslinking agent, vinyl acetate, crosslinking monomer, oxydol, a mold preventive, a defoaming agent and a film-forming assistant. The preparation method comprises the following steps: adding the sodium acetate, disodium hydrogen phosphate dodecahydrate, protective colloid and defoaming agent into the deionized water to obtain a protective colloid solution; adding part of the vinyl acetate and crosslinking monomer into the protective colloid solution, adding all the crosslinking agent solution, and adding part of the oxydol and tartaric acid to obtain a seed emulsion; and dropwisely adding part of the vinyl acetate and oxydol into the seed emulsion, adding the rest of tartaric acid, dropwisely adding the rest of vinyl acetate and oxydol, carrying out curing reaction, adding the film-forming assistant, and adding the mold preventive to obtain the weather-resistant water-based adhesive. The weather-resistant water-based adhesive has the advantages of high bonding strength, excellent heat resistance and excellent water resistance, is convenient to use, enhances the work efficiency and lowers the cost.