27 results about "Water baths" patented technology

The invention relates to a catalyst for ternary copolymerization of norbornenes, tetrafluoroethylene and pentenes and a ternary copolymerization method. The catalyst is characterized in that the catalyst is prepared through the following method comprising the steps of: dissolving iron dichloride, a ligand and an alkyl metal compound in a solvent in a dry single-neck glass bottle in an inert gas atmosphere, sealing a bottle mouth through an emulsion pipe, keeping the constant temperature in a water bath at the temperature of 40-50 DEG C for 10-30min, and cooling to obtain an iron complex catalyst. Compared with the prior art, the catalyst provided by the invention is a novel iron complex catalyst which can produce catalytic activity in an nitrogen-protected system at a certain pressure and the temperature of 20-120 DEG C so as to catalyze the ternary copolymerization of the norbornenes with the tetrafluoroethylene and the pentenes, and a product after soaking in methanol is very easy to wash and separate. The catalyst has the characteristics of high copolymer yield, low reaction temperature, low price, easiness in obtainment, high catalytic efficiency and the like.

The invention discloses a preparation method of a special-infiltration functional fabric surface with self-cleaning and oil-water separation functions. The preparation method comprises the following steps: dissolving titanium potassium oxalate into deionized water, slowly dropwise adding an H2O2 solution under the stirring action of a magnetic rotor, adjusting the pH value of the solution by virtue of HCl to obtain a prepared solution, transferring the prepared solution into a blue-cap reagent bottle, adding clean cotton cloth into the blue-cap reagent bottle, and preparing the cotton cloth with a nano-TiO2 surface by virtue of a one-step water bath process; soaking the cotton cloth with the nano-TiO2 surface into a fluorosilane solution, taking out the cotton cloth after reacting for a certain time, and drying so as to obtain the cotton cloth with the special-infiltration functional fabric surface with the self-cleaning and oil-water separation functions. The preparation method has the advantages that the process is simple and convenient and is easy to operate, the reaction conditions are mild, the special-infiltration functional fabric surface has durable and stable super-hydrophobic self-cleaning performance and a good oil-water separation function, and fabrics have excellent comfort levels and mechanical properties.

The process of preparing high water solubility polyvinyl alcohol features that vinyl acetate monomer in 50-80 weight portions, methanol in 16-49 weight portions, vinyl monomer containing carboxyl group or amido group in 1-4 and initiator in 0.04-0.08 weight portion are reacted in a reactor equipped with thermometer, stirrer, reflux condensator and water bath at 60-65 deg.c for 3-6 hr; and the resultant is compounded with methanol into 30 % concentration solution and alcoholyzed with sodium hydroxide or potassium hydroxide to obtain high water solubility polyvinyl alcohol.

The invention relates to a spatial resolution calibration device and a spatial resolution calibration method for distributed fiber-optic sensing. The spatial resolution calibration device and the spatial resolution calibration method for the distributed fiber-optic sensing are easy to understand and operate; and the spatial resolution of various distributed fiber-optic sensors is objectively and accurately calibrated, and a reference is provided for the work such as apparatus selection and purchasing, performance evaluation, monitoring design, measurement and data analysis of a technician. The technical scheme is that: the spatial resolution calibration device for a distributed fiber-optic sensing demodulator is characterized by comprising a water bath which is divided into two parts, wherein one side of the water bath is a low-temperature tank, and the other side of the water bath is a high-temperature tank with a heater; a cover plate is arranged on the water bath; and a reel holder is vertically arranged on each of the two sides of a middle partition plate in the water bath. The device and the method are applied to the spatial resolution calibration of modulation apparatuses such as a Raman optical time-domain reflectometer (ROTDR) and a Brillouin optical time-domain analyzer (BOTDA)/Brillouin optical time-domain reflectometer (BOTDR).

The invention discloses kelp microcrystalline cellulose and a preparation method thereof as well as application of the prepared microcrystalline cellulose. The preparation method of the kelp microcrystalline cellulose comprises the following steps of by adopting waste kelp residues after kelp glue-extracting as the materials, carrying out flocculation collecting, acidification decalcification, alkaline treatment, bleaching treatment, washing, drying and hydrolytic treatment, wherein in the hydrolytic treatment, two different low-temperature cellulases are respectively added according to the addition of 20U/g-30U/g; carrying out enzymolysis for 0.5-12 hours in a water bath of 10 DEG C-40 DEG C; and drying and crushing to obtain the kelp microcrystalline cellulose. According to the preparation method of the kelp microcrystalline cellulose, the production cost is low, the environment pollution is small, the hydrolysis step adopts a double-enzyme jointed enzymolysis technology, the degradation speed is stable, the degraded cellulose is uniform in molecular weight, the cellulose crystalline grains are small and uniform, degradability of the fibers can be effectively controlled, and the microcrystalline cellulose with high purity and high activity is obtained. The kelp microcrystalline cellulose disclosed by the invention is high in cellulose content, high in water holding capacity and expansion force, and can be used for food additive and pharmaceutical adjuvant in the food industry.

The invention relates to a method for analyzing aroma components of a flavoring material through GC/MS based on thermal desorption. The method includes the following steps that 1, a sample to be extracted is put into a thermal desorption device, the thermal desorption device is placed in a water bath with the temperature of 50-70 DEG C, magnetic stirring is carried out, meanwhile nitrogen purging is carried out, the aroma components are captured for 50-70 min through a thermal desorption pipe, desorption is carried out for 5-30 min at 240-260 DEG C at a gas chromatography sample inlet, and the aroma components of the flavoring material are obtained; 2, gas chromatography-mass spectrometry analysis is carried out on the obtained aroma components. By means of the method, extraction and analysis of trace compounds in essence are greatly improved, and a great breakthrough is made in both the variety and the quantity of the compounds. By means of a device used in the method, some volatile trace aroma compounds in pasty or oily or solid essence can be well detected. The new enrichment and analysis method is provided for detecting some trace flavoring materials in food.

The invention discloses a method for preparing a silver micron hollow frame structural material. The method comprises the following steps of firstly, preparing a AgNO3 aqueous solution at the room temperature, then, adding the appropriate quantity of a structure-directing agent HF and a reducing agent FeSO4 into the AgNO3 aqueous solution to form a mixed solution and furthermore, enabling the mixed solution mentioned above to stand in water bath of a certain temperature, keeping for a period of reaction time, and obtaining the silver micron hollow frame structural material after carrying out centrifugation, washing and drying on a product. The method for preparing the silver micron hollow frame structural material is simple, and with the method, large-scale production of the silver micronhollow frame structural material is realized.

The invention discloses a preparation process of a leak protection plugging agent along with drilling based on the control of monomer concentration. The preparation process comprises the following steps: (a) purifying AM (acrylamide) and AMPS (2-acrylamido-2-methyl propane sulfonic acid) for later use; (b) weighing AA (acrylic acid), hydrolyzing and transferring into a reactor in a super constant-temperature water bath; (c) adding a certain amount of cross-linking agent; (d) adding AM and AMPS solutions, and regulating the pH value of a reaction system to 7, wherein the monomer concentration is 14.3%-18.2% by weight; (e) introducing inert gas for deoxygenation, stirring and adding an initiator; and (f) regulating the temperature to reaction temperature, and performing polymerization reaction for a certain period of time to get a target product. According to the preparation process disclosed by the invention, the leak protection plugging agent along with drilling can be successfully prepared by controlling the monomer concentration in reaction process, the preparation process further has the advantages of high production efficiency, simple production process, simplicity in operation and capability of greatly reducing the production cost, various performances of the produced leak protection plugging agent along with drilling are far better than those of an existing product, and the leak protection plugging agent along with drilling is further conductive to field well leakage treatment.

The invention discloses a preparation method of composite acrylate emulsion. The preparation method comprises the following steps: adding polyoxyethylene octyl phenol ether-10, lauryl sodium sulfate and ammonium persulfate into an emulsifying kettle; adding deionized water, stirring and dissolving, sequentially adding butyl acrylate, methyl methacrylate and methacrylic acid into a pre-emulsifyingkettle, stirring and emulsifying to obtain pre-emulsion of the monomer; sequentially adding sodium bicarbonate and deionized water into a polymerizing pot, starting stirring to dissolve, and placing in a 50 DEG C water bath; filling in a constant pressure dropping funnel, weighing 5 parts of the prepared monomer pre-emulsion, adding into the polymerizing pot, adding a modified nano-hydroxyapatitematerial, weighing ammonium persulfate and dissolving into water, slowly adding into the polymerizing pot, regulating the temperature of the water bath to 82 DEG C, slowly raising the temperature to 82 DEG C, slowly dropwise adding the monomer pre-emulsion, washing the pre-emulsifying kettle, dropwise adding into the polymerizing pot, and regulating the pH value to 8 with ammonium hydroxide, thereby obtaining the composite nano acrylate emulsion.

The invention discloses an etching solution suitable for dislocation display of a crystal orientation [100] monocrystal germanium wafer deflecting to the crystal orientation [111] as well as an etching method. The method comprises steps as follows: preparing the etching solution; placing the prepared etching solution in a thermostat water bath for heating; cleaning the surface of the monocrystal germanium wafer; soaking the monocrystal germanium wafer in the etching solution for etching for 5 min; performing leaching and blow-drying on the etched monocrystal germanium wafer; observing the morphology after etching under a metallographic microscope finally. With the adoption of the etching method, a dislocation pit can be effectively etched out, the etching rate is moderate, the reaction process is mild and controllable, the etching method is simple and feasible when used for detecting the dislocation density of the crystal orientation [100] monocrystal germanium wafer deflecting to the crystal orientation [111], and the appearing probability of interference patterns such as water ripples and the like is low.

A method of removing a filtrate storage bottle from a water bath includes inserting at least two finger underneath a radially protruding lip of a filtrate storage bottle sealing cap and raising the at least two fingers to lift the bottle from the water bath. A side wall portion of the filtrate storage bottle sealing cap is smaller in perimeter than a circle surrounding the radially protruding lip. The cap creates a liquid tight seal with the filtrate storage bottle.

The invention discloses a preparation method of PMI (Polymethacrylimide) foam plastic. The preparation method comprises the following steps: S1, blending and mixing an oil-soluble free radical initiator, a monomer, a foaming agent and an additive to obtain a spare sizing agent; S2, polymerizing the mixture in a constant-temperature water bath to obtain a foamable copolymer material; S3, smashing the foamable copolymer material to obtain foamable copolymer particles; S4, directly pouring the foamable copolymer particles into a forming mold according to a proportion for foaming, and filling molds of any shapes with the foamable copolymer particles according to different density demands for foaming to obtain PMI foam products of corresponding mold shapes. By adopting the preparation method, the conventional process is improved, the production demands of special-shaped products can be met, special-shaped molds can be directly used for foaming according to the profiles of the special-shapedproducts, the utilization rates of raw materials are improved, and meanwhile the production efficiency can be improved greatly.

The invention discloses a preparation method of fulvic acid apple health care vinegar drink. The preparation method comprises the following steps: preparing apple juice; preparing yeast activated liquid special for fruit wine for later use; inoculating the obtained yeast activated liquid special for fruit wine into the apple juice, thus obtaining fruit wine fermented liquid; adjusting the alcohol content of the fruit wine fermentation liquid, and inoculating the fruit wine fermentation liquid into fruit vinegar bacteria for acetic acid fermentation culture; putting acetic acid fermented liquid into a boiled water bath for sterilization for 10 minutes, and cooling and centrifugating the acetic acid fermented liquid, thus obtaining a coarse product of apple health care vinegar drink; uniformly blending and mixing the coarse product of the apple health care vinegar drink with fulvic acid, fructose syrup and citric acid according to various ratios, thus obtaining the fulvic acid apple health care vinegar drink. According to the method, fulvic acid is purified to meet the standard of the food industry and then added into verified apple vinegar drink with a health care function, thus obtaining the fulvic acid apple health care vinegar drink which tastes mellow and has various health care functions.

The invention discloses an ultrasonic improved fabric dyeing device and a process thereof. The ultrasonic improved fabric dyeing device comprises a dyeing furnace and a workbench; a dyeing cylinder isfixedly arranged in the dyeing furnace; a temperature sensor A is fixedly mounted on an inner side of the dyeing cylinder; an electric heating thermostatic water bath is fixedly arranged on an outerside of the dyeing cylinder; a support A is arranged on an upper end of an inner cavity of the dyeing furnace; and an ultrasonic transmitter A and a transducer A are arranged on an upper end of the support A. The ultrasonic improved fabric dyeing device and process can measure and obtain the dyeing rate at different dyeing temperatures and radiation frequencies, and compare and obtain the dyeing temperature and the radiation frequency at the best dyeing rate; an ultrasonic frequency signal emitted by an ultrasonic transmitter B is converted into co-frequency mechanical vibrations through a transducer B, the dye liquor is irradiated in an ultrasonic longitudinal wave form so as to enhance the stirring and diffusion effect of the dye, the dissolution of the soluble dye is accelerated, and the dyeing rate is improved. The best dyeing temperature and radiation frequency can be measured when different fabrics are dyed so as to improve the dyeing rate, and measurement is convenient.

The invention discloses a preparation method of a high-temperature graphite anode material for a lithium-ion battery. The method comprises the following steps: firstly, weighing graphite, a solvent and ammonium hydroxide at the ratio of 1g to (0.5L-2L) to (2mL-10mL); adding the graphite, the solvent and the ammonium hydroxide to a high-speed homogenizer and carrying out dispersion at a rotating speed of 500-2,000r/min for 0.5-1 hour to obtain mixed slurry; dropwise adding titanate until the ratio of the mixed slurry and the titanate is 1g to (2mL-5mL); reacting in a water bath of 40-80 DEG C for 5-10 hours after the titanate is added, and repeatedly washing the product with water and ethanol for 4-5 times after reaction is ended; and finally, carrying out drying in a drying oven at 80-100 DEG C, sintering the product in an atmosphere protection furnace, heating the product to 400-800 DEG C at the heating rate of 2-25 DEG C/min and carrying out heat preservation for 4-18 hours to obtain the high-temperature graphite anode material for the lithium-ion battery.

The invention relates to a gas chromatography-mass spectrometry analysis method for a determinating potassium cinnamate content in food. The gas chromatography-mass spectrometry analysis method comprises the following steps: (1), weighing a sample, putting the sample into a container, adding water till a constant volume, adding acid to adjust the pH of a sample solution to 1, then extracting the sample solution by using dichloromethane, collecting an extracted dichloromethane layer, and drying; (2), derivatizing and extracting the sample: adding a derivatizing reagent into the dried sample inthe step (1), swirling for uniformly mixing, carrying out a reaction in a water bath, then cooling to room temperature, adding n-hexane for extraction, allowing standing still and then taking a supernatant as a test sample solution; (3), determinating: determinating the potassium cinnamate in the test sample solution obtained in the step (2) by a gas chromatography-mass spectrometry technology. Inthe gas chromatography-mass spectrometry analysis method, pretreatment operation is simplified; in addition, by the gas chromatography-mass spectrometry analysis method, the anti-interference abilityis good, the precision is high, the reproducibility is good and qualitative accuracy is good; the gas chromatography-mass spectrometry analysis method can be widely applied to determination of the potassium cinnamate in the food.

The invention discloses a preparation and identification method of taenia solium TSOL18 gene recombinant bacillus calmette guerin vaccine. The preparation and identification method is characterized by comprising the following steps: (1) amplification and identification of plasmid pMV261; (2) construction and identification of recombinant plasmid pMV261-TSOL18; and (3) construction and identification of the taenia solium TSOL18 gene recombinant bacillus calmette guerin vaccine, namely 1) preparation of BCG competent cells, 2) electrotransformation of the BCG competent cells by use of the recombinant plasmid pMV261-TSOL18, 3) identification of the taenia solium TSOL18 gene recombinant bacillus calmette guerin vaccine, namely picking up individual bacterial colony in the positive colonies to an M7H9ADC liquid culture medium containing Kana for shaking culture, taking the bacterial liquid for centrifuging; abandoning the liquid supernatant, washing by use of ddH2O, centrifuging and abandoning the liquid supernatant, adding ddH2O, and re-suspending before boiling water bath, putting in ice bath, centrifuging, and absorbing the liquid supernatant as a PCR template for PCR identification.

The present invention discloses a fermented soybean fermentation tank. The fermented soybean fermentation tank comprises ceramic walls (1) and four square kiln tanks evenly divided by the ceramic walls (1), one fermentation tank (2) is respectively suspended within each of the square kiln tanks, one water bath insulation zone (3) is preserved between each of the fermentation tank (2) and the corresponding square kiln tank, and one water outlet (6) is arranged at the bottom of each of the water bath insulation zones (3); the fermented soybean fermentation tank also comprises a cylindrical heating tank (4) separated by the ceramic walls (1), a water inlet (5) is arranged at the upper part of the heating tank (4), the lower part of the heating tank is respectively communicated with each of the water bath insulation zone (3) via circulation pumps (7), and heating electric resistance wires (9) are arranged on the outer peripheries; and the fermented soybean fermentation tank also comprises temperature sensors (8) arranged in each of the water bath insulation zone (3) and a controller (10), and the controller (10) is respectively connected with switches of each of the temperature sensors (8), each of the circulation pumps (7), each water outlets (6) and heating electric resistance wires (9). The fermented soybean fermentation tank uses the water bath to conduct insulation and is stable in quality.

The invention provides a germanium tetrachloride bubbling-tank device and a bubbling method of germanium tetrachloride. The bubbling-tank device comprises the following components: the first bubbling tank and the second bubbling tank which are abreast arranged in a water-bath system; a connecting pipeline which is located between the first bubbling tank and the second bubbling tank; a germanium tetrachloride inlet pipeline for respectively introducing germanium tetrachloride into the material-loading pipe of the first bubbling tank and the material-loading pipe of the second bubbling tank; a gas-inlet pipeline which is arranged with a gas inlet, a gas outlet, two branch gas-inlet pipes located between the gas inlet and the gas outlet, and a flow controller; each of the two branch gas-inlet pipes comprises the first branch gas-inlet pipe which is connected to the bubbling pipe of the first bubbling tank and the second branch gas-inlet pipe which is connected to the bubbling pipe of the second bubbling tank. By the germanium tetrachloride bubbling-tank device with gas-carrier double bubbling tanks provided by the invention, the mixed gas carrying the germanium tetrachloride is formed by sequential passing of the carrier gas through the two liquid-state bubbling tanks.

The invention discloses a novel method for purifying an arsenic chelating type immune complex. The method comprises steps as follows: S1, a chelating agent solution is prepared firstly through dissolution of a chelating agent in a solvent; S2, a proper amount of carrier protein is taken and added to a borate buffer solution, and a carrier protein solution can be prepared; S3, the prepared chelating agent solution is added to the carrier protein solution, the carrier protein solution is put in a constant-temperature water bath and stirred uniformly for constant-temperature water bathing, and amixed solution can be obtained; S4, a semipermeable membrane is homemade; S5, arsenic ions and other heteroions which are not chelated are removed through pre-purification; S6, unbound carrier proteinis removed. Part of articles are homemade in the purification process, so that the purification cost can be notably reduced, the requirements for working environments are lower, the applicable rangeis wider, the purification time is effectively shortened by use of a combined chromatographic column, and the cost is reduced to a certain extent.