41results about How to "Wide range of practical applications" patented technology

The invention belongs to the field of natural active materials and particularly relates to an extraction method of anthocyanin ingredients. The extraction method includes the steps of 1), extracting raw materials containing the anthocyanin ingredients with ethyl alcohol, and performing alcohol yeast on an extracting solution and then centrifugal filtration to collect a filtrate; 2), extracting the filtrate to obtain the anthocyanin ingredients after filtration. Compared with the prior art, the extraction method has the advantages that the anthocyanin ingredients high in content contain effective components of compound alkaloid, superoxide dismutase and the like and have better therapeutic effect on various tumors and cancers, stroke cardiovascular disease, diabetes, leucoderma, scales disease and cerebral palsy, and blocking of cell tumor variation and caner cell mutation gene variation which are caused by fluid-circulating lymph can be effectively improved.

The invention belongs to the technical field of zinc oxide nanorod array preparation, and particularly relates to a large-area preparation method for a zinc oxide nanorod array with good orientation and high compactness, which comprises the following steps of preparing a sol, cleaning a substrate, dip-coating and carrying out crystallizing heat treatment. The invention adopts a sol-gel method to directly prepare the zinc oxide nanorod array with good orientation and high compactness on the substrate in a large area without a catalyst or a template, greatly lowers actual production cost and improves process repeatability. The invention can solve the problems of high cost, adoption of the catalyst and the template or a gas-phase zinc oxide transition layer to aid growth, poor production repeatability and the like in existing zinc oxide nanorod array production methods. By using a simple method, the invention directly grow the zinc oxide nanorod array with an ordered array, a uniform structure and high compactness on the substrate in a large area, and the draw ratio of the zinc oxide nanorod is effectively controlled through adjusting dip-coating speed.

The application discloses a method for extracting anthocyanins. The method for extracting anthocyanins in this application includes using roselle as a raw material, chopping the raw material to 5-10 mesh, and using pure water and adding a compound enzyme preparation to enzymatically process the chopped raw material under the condition of 45-55°C. Extraction, the extract is sequentially centrifuged, ultrafiltered, concentrated by reverse osmosis, purified by macroporous adsorption resin, and freeze-dried to obtain high-purity anthocyanins; the compound enzyme preparation includes cellulase and pectinase. The anthocyanin extraction method of the present application has a simple process and is easy to operate, and has a high extraction rate of anthocyanin, relatively saves production costs, and has higher economic value. The anthocyanins extracted by the method of the application have a purity of more than 70%, so that the extracted anthocyanins have higher medical value and wider practical application fields. Moreover, the method of the present application avoids organic solvent residues, reduces environmental pollution, and has better social benefits.

The invention belongs to the field of composite membrane preparation and relates to a method for preparing a composite fiber membrane, in particular to a method for preparing a cellulose-reinforced nano-composite fiber membrane by electrostatic spinning, aiming to solve the problems that a PMMA (polymethyl methacrylate) fiber membrane prepared by an existing method is difficult to form, poor in thermal stability and poor in nonpolar PMMA and polar CNC (cellulose nanocrystal) compatibility. The method includes firstly, preparing CNC water suspension; secondly, preparing electrostatic spinning liquid; thirdly, filling an injector with the electrostatic spinning liquid and performing electrostatic spinning so as to obtain the cellulose-reinforced nano-composite fiber membrane. Fibers prepared by the method are smooth in surface and uniform in diameter; along with increase of CNC addition amount, the fiber diameters are decreased gradually and are narrowed in distribution, and a TGA (thermal gravity analysis) curve of nano-composite fibers moves towards a high temperature direction, so that thermal properties of the nano-composite fibers are enhanced. The maximum tensile strength of the prepared fiber membrane can reach 0.3MPa.

The invention provides a preparation method for rare earth and cobalt permanent magnetic particles with the high remanence ratio. According to the method, the low-temperature wet type ball milling technology is adopted; the melting point temperature of organic solvents is controlled to be under minus 50 DEG C; the ball milling temperature is higher than the melting point temperature of the organic solvents and lower than 0 DEG C; in the ball milling process, the mass ratio of ball materials is controlled to be 8:1-9.5:1; the ball milling time of every time is controlled to be within 1.5 minutes to 5 minutes, and the total ball milling time is controlled to be within one hour to ten hours; finally, the rare earth and cobalt permanent magnetic particles with the high nanoscale particle content, the high coercivity and the high remanence ratio are obtained. As a result, the overall performance of the rare earth and cobalt permanent magnetic particles is improved, and the practical application area of the rare earth and cobalt permanent magnetic particles is greatly expanded. In addition, the preparation method has the advantages of being low in cost and easy and convenient to operate and having good application prospects.

The invention relates to a molybdenum sulfide / polypyrrole / polyaniline ternary composite material as well as a preparation method and application thereof. According to the molybdenum sulfide / polypyrrole / polyaniline ternary composite material, a polypyrrole nano coating layer and polyaniline nanoparticles are grown on molybdenum sulfide nanosheets in situ. The preparation method comprises the following steps: performing ultrasonic peeling on a solution so as to obtain molybdenum sulfide nanosheets, performing ultrasonic dispersion so as to obtain a molybdenum sulfide nanosheet dispersion liquid, adding an acid solution dispersion liquid of a pyrrole monomer, performing in-situ polymerization in an ice water bath, washing, drying so as to obtain a molybdenum sulfide / polypyrrole composite material, performing ultrasonic dispersion so as to obtain a molybdenum sulfide / polypyrrole dispersion liquid, adding an acid solution dispersion liquid of aniline, performing in-situ polymerization in the ice water bath, washing, and drying, thereby obtaining the molybdenum sulfide / polypyrrole / polyaniline ternary composite material. The molybdenum sulfide / polypyrrole / polyaniline ternary composite material is simple in preparation process, easy to operate and low in reaction temperature, and can be used as an ideal electrode material of a new energy device such as a high-performance super-capacitor and a lithium ion battery.