42results about How to "Dissolution achieved" patented technology

The invention relates to hydrothermal carbon spheres for supporting nanosilver by using a one-step method and a preparation method and application of the hydrothermal carbon spheres. The preparation method comprises the following steps: removing impurities from whole collected biomass components, washing, drying, preparing fine granules under the external mechanical actions of a crushing machine and a ball mill, dissolving the whole biomass components into a sodium hydroxide/urea system, after the solution is dissolved, dropping a prepared silver ammonia solution, uniformly mixing, pouring theuniformly mixed solution into a high-temperature high-pressure reaction kettle, carrying out a hydrothermal reaction, and after the hydrothermal reaction is completed, carrying out centrifugation, washing, ultrasonic treatment, centrifugation and freeze drying on the solution, thereby obtaining the nanosilver supported hydrothermal carbon spheres finally. By adopting the hydrothermal carbon spheres, the defects that nanosilver is liable to aggregate, instable and too rapid in leakage can be alleviated, the application range of the hydrothermal carbon spheres as a nanosilver carrier is widened, and whole biomass components such as agriculture and forestry biomass wastes can be sufficiently utilized.

The invention discloses a method for efficiently extracting longan seed polyphenols. The method comprises the following steps: (1) pulping and radiation treatment: mixing fresh longan seeds and deionized water, pulping, adding an organic acid solution, heating to 45-50 DEG C, and carrying out 60Co ionizing radiation treatment for 30-60 seconds to obtain a radiated pulp; (2) leaching and filtration treatment: adding a composite enzyme into the radiated pulp in a nitrogen protective atmosphere, extracting at 60-70 DEG C under reflux for 2-3 hours, filtering the leaching solution through an ultrafiltration membrane, and collecting the filtrate; (3) reduced pressure concentration and extraction treatment; and (4) adsorption and drying treatment. The ionizing radiation is matched with the organic acid solution to treat the pulp, thereby lowering the polyphenol binding capacity. The composite enzyme is added in the leaching process to break through the chemical bonds for binding the polyphenols, thereby enhancing the polyphenol product yield. The method is simple to operate, and has the advantages of high extraction efficiency and the like.

The invention relates to a method for determining total sulfur in fluorite. The method comprises a step of sample drying, a step of sample dissolving, a step of working curve drafting and a step of the determination of sulfur in a sample solution. The determination method has the advantages of simple operation, less application amounts of reagents and the sample, and short detection measure time, and can satisfy rapid and accurate detection requirements; and an acid dissolving solution composed of nitric acid, hydrofluoric acid and perchloric acid adopted in the invention realizes the dissolving of sulfur in fluorite at a low dissolving temperature, and effectively reduces the overlapping and cross interferences of impurity elements in fluorite to the spectrum, so the sensitivity is high, the measure accuracy and the measure precision are high, and the measure consistency of fluorite ores in different regions and having different types is good.

The invention discloses an in-vehicle pollution remover, and belongs to the technical field of automobile deodorants. The remover comprises the following components: 0.8 to 1.2 percent of ammonium acetate, 0.23 to 0.27 percent of triglyceride, 0.002 to 0.004 percent of menthol, 0.23 to 0.27 percent of sodium chloride, 0.25 to 0.35 percent of glycine and the balance of distilled water. The remover is an oil-in-water environment-friendly product, is prepared from amino acid and plant essence, is slightly fragrant and free of harmful components, and does not have any harmful effects on human health. The product is smeared and spread in a vehicle and on an ornament to be in full contact with an odor source such as formaldehyde, benzene, xylene and TVOC in the vehicle, and is wiped and cleaned after being naturally dried to remove odor in the vehicle with the removal rate of more than 99.3 percent.

The invention discloses aluminum sulfate dissolving equipment and an aluminum sulfate dissolving method, and belongs to the technical field of chemical industry equipment. The aluminum sulfate dissolving equipment comprises a circulating tank, a dissolving pool, an air compression air pipeline and a breaking device, wherein the circulating tank is provided with a water pipeline and a steam pipeline, a gas discharge pipe and a liquid inlet are arranged on the top portion, a circulating liquid discharge port and a finished product liquid discharge port are arranged on the bottom portion, the liquid inlet of the dissolving pool is communicated to the circulating liquid discharge port of the circulating tank, the liquid discharge port on the bottom of the dissolving pool is communicated to theliquid inlet on the top portion of the circulating tank through a liquid outlet pipeline, a conveying pump is arranged on the liquid outlet pipeline, the air compression air pipeline is used for introducing gas into the bottom portion of the dissolving pool, and the breaking device is arranged above the dissolving pool and is used for breaking blocky aluminum sulfate. According to the present invention, the aluminum sulfate dissolving method adopts the aluminum sulfate dissolving equipment; and the aluminum sulfate dissolving equipment can achieve cyclic dissolution, has characteristics of high efficiency, labor intensity reducing and high automation degree, and can achieve continuous production.

The invention belongs to the technical field of waste recycling and discloses a copper-based nickel plating-gold plating layer waste plating piece metal gradient recovery method. The method comprisesthe following steps of 1, putting plating pieces into ethyl alcohol to conduct cleaning to remove surface greasy dirt and then conducting cleaning through deionized water; 2, conducting gold solutiontreatment on the cleaned plating pieces; 3, conducting nickel solution treatment on the plating pieces subjected to gold solution treatment; 3.1, washing the surfaces of the plating pieces subjected to gold solution treatment through deionized water. Through the copper-based nickel plating-gold plating layer waste plating piece metal gradient recovery method, reaction is controllable; a gold plating layer on the outermost side of a base body can be quickly and selectively removed in priority, corrosion dissolution to a metallic nickel layer under the gold plating layer is small, and the purpose of separating and recycling metallic gold is achieved; the metallic nickel layer on the surface of each degolded plating piece is selectively separated and recycled; and finally, selective separation and recycling of gold, nickel and copper in the plating pieces are realized.

The invention provides a high-temperature-resistant honeycomb core strip adhesive and a preparation method and application thereof, and belongs to the technical field of honeycomb core material preparation. The core strip adhesive is prepared from the following components in parts by mass: 100 parts of polyimide resin; 5-60 parts of an active modifier; 10-35 parts of thermoplastic resin; 1-15 parts of inorganic nanoparticles; 150-350 parts of solvent. The preparation method comprises the following steps: adding 1/4-1/3 of the thermoplastic resin into the active modifier, dissolving at 100-150DEG C, cooling to below 80 DEG C, adding the remaining thermoplastic resin and inorganic nanoparticles into the active modifier, and stirring and dispersing to obtain a component A; and adding polyimide resin and the component A into a solvent for dissolving and dispersing under a room-temperature stirring condition to obtain the uniform and stable honeycomb core strip adhesive. The core strip adhesive has the characteristics of good manufacturability, low curing temperature, high temperature resistance, excellent mechanical properties and the like, and is especially suitable for preparation of ultrathin glass cloth honeycombs.

The invention provides a method of using an ionic liquid solvent system to dissolve fermented mushroom dregs to prepare polymers. The method comprises the following steps: (1) using an ionic liquid solvent system to dissolve fermented mushroom dregs under a heating condition or at a room temperature so as to obtain a solution of dissolved mushroom dregs and an optional undissolved component; and (2) mixing the solution of dissolved mushroom dregs with a regenerating reagent so as to separate polymers from the solution of dissolved mushroom dregs through precipitation and/or solidification to obtain a first polymer; and optionally, washing and drying the undissolved component to obtain a second polymer. The fermented mushroom dregs are processed by an ionic liquid to obtain natural polymers; the polymers can be used to prepare degradable materials or raw materials for other purpose; the mushroom dregs are further processed and converted into valuable resources, a novel method is provided for converting mushroom dregs into valuable resources, and the additional value of mushroom dregs is increased.

The present invention provides a method for removing copper and other impurities in preparing tantalum niobium oxide. A fluoroniobic acid solution or a fluorotantalic acid solution obtained after extraction and separation is used as a raw material to perform a treatment of removing copper and other impurities. The method comprises steps of first removal of copper, removal of crude copper residues,neutralization treatment, slurry liquid filtration, washing, drying, secondary washing and drying, and calcination to produce niobium pentoxide or tantalum pentoxide. The method is simple and effective, extremely low in processing costs and obvious in economic benefits, greatly improves value of tantalum niobium oxide, and has obvious characteristics of energy saving and emission reduction, environmental protection, low pollution, obvious economic benefits, etc.

The invention discloses a preparation method of female private part nursing anti-bacterial liquid. The preparation method comprises the following steps that S1, the following raw materials in parts byweight: 30-50 parts of red cinnamomi cortex, 15-25 parts of Tamanu oil, 14-20 parts of caryophylli Fructus, 4-8 parts of borneol, 5-10 parts of aloe powder, 15-25 parts of lonicerae japonicae flos, 10-15 parts of foeniculi fructus, 10-15 parts of radix sophorae flavescentis, 10-15 parts of fructus forsythiae and 600-1500 parts of purified water are prepared; S2, the purified water is equally divided into two equal parts, namely a first part of purified water and a second part of purified water in sequence; two stirring reaction stills are prepared, the inner parts of the two stirring reactionstills are respectively cleaned, and after the cleaning is completed, the two stirring reaction stills are respectively marked as a first stirring reaction still and a second stirring reaction still;and S3, the first part of purified water is put into the first stirring reaction still, the first stirring reaction still is heated to 40-60 DEG C, and continuous heating is carried out for 10-15 minutes. The preparation method is reasonable in design, the female private part nursing anti-bacterial liquid can inhibit pathogenic entero bacteria, pyogenic coccus and pathogenic saccharomycetes, so that the actual requirements of women are met.

The invention provides a water-dissolvable rubber material and a preparation method thereof. The water-dissolvable rubber material is mainly prepared from the following components in parts by weight:10-70 parts of dimethylolpropionic acid modified polyurethane (DMPA-PU), 15-30 parts of ethylenediamine propanesulfonic acid modified chitosan (EPS-CS), 5-30 parts of carboxymethyl modified nano silica, 5-40 parts of a compatilizer, 0.3-2 parts of a coupling agent, 0.1-1 part of an antioxidant, 1-5 parts of a softener, 0.3-3 parts of a cross-linking agent, 0.3-3 parts of an accelerant, and 0.5-6 parts of sulphur. According to water-dissolvable rubber, a substrate easy to hydrolyze has certain rubber elasticity and strength by grafting modified polymer elastomer chain segments, and by being matched with a natural material easy to dissolve in water and other components, the water-dissolvable rubber has the excellent water-dissolvable property, also has mechanical properties, can be applied to preparation of customized products in the fields of military industry and petroleum, and has high economic value and social value.

The invention provides nano hydrogen-rich milk and a preparation method thereof. The preparation method comprises the following steps: sequentially carrying out milk collection treatment, standardization treatment and UHT sterilization treatment on raw milk to obtain a raw milk material; and carrying out hydrogen dissolving treatment on the raw milk material, and carrying out sterile canning to obtain the hydrogen-rich milk. The hydrogen-rich milk prepared by the preparation method provided by the invention has a dissolved hydrogen concentration of at least 10 mg/L, and the retention time of 80% hydrogen concentration in the milk in a non-sealed state is at least 5 hours.

The invention discloses a processing device of traditional Chinese medicine decoction pieces. The processing device comprises a washing conveying line, a soaking delivery line and a cooking output line which are sequentially connected, selected medicinal materials are directly placed in a bearing frame, then are washed sequentially by the washing conveying line, then are soaked and sliced by the soaking delivery line, and then are braised by the cooking output line. According to the processing device, the washing conveying line, the soaking delivery line and the cooking output line are directly arranged, after the medicinal materials are thorough cleaned through the washing conveying line, the medicinal materials are directly conveyed to the soaking delivery line for soaking for a certainperiod of time, and then are braised in the cooking output line, the integrated technology process is achieved, the technology process is simple, the processing efficiency is high, and the problems that in the prior art, in the process of processing the traditional Chinese medicine decoction pieces, the medicinal materials need to be cleaned by a washing machine and then put into a medicine soaking machine for soaking, then slicing is conducted, different processes and different instruments are needed for processing, the process is complex, and the processing efficiency is low are solved.

The invention relates to a method for recovering multiple metal elements from molybdenite based on molybdenum calcine, belongs to the technical field of metal smelting, and solves the problems that ammonia water or sodium hydroxide is used in the molybdenum recovery process in the prior art, and a large amount of ammonia-nitrogen wastewater is generated; and valuable metals in molybdenite are difficult to recover and the process is tedious. The invention provides a method for recovering multiple metal elements from molybdenite based on molybdenum calcine. The method comprises the following steps: roasting the molybdenite to obtain the molybdenum calcine; the molybdenite is leached by using a leaching agent under the condition of an auxiliary leaching agent to obtain a leaching solution; the leaching agent is hydrochloric acid or nitric acid, and the leaching aid is one or a combination of phosphoric acid and calcium phosphate; filtering to obtain filtrate and bismuth-enriched filter residues; extracting molybdenum from the filtrate to obtain raffinate and molybdenum-containing extract liquor; and back-extracting the molybdenum by using a back-extracting agent to obtain a back-extracting solution containing the molybdenum. And efficient recycling of multiple metal elements in molybdenite is achieved.

The invention discloses a waste cellulose acetate fiber-based regenerated cellulose aerogel and a preparation method thereof, and belongs to the technical field of composite materials. The method comprises the steps: dissolving a cigarette filter tip in the obtained sodium hydroxide/urea aqueous solution to obtain a solution system; freezing and then unfreezing the obtained solution system, continuously adding ethanol after unfreezing, and separating out regenerated cellulose to obtain a mixed solution containing the regenerated cellulose; centrifugally washing the mixed solution containing the regenerated cellulose, and drying to obtain the regenerated cellulose; uniformly dispersing zinc nitrate and 2-methylimidazole in methanol to obtain a mixed solution; and dispersing the obtained regenerated cellulose in the obtained mixed solution to obtain a reaction system, carrying out in-situ generation on the obtained reaction system, loading an MOF material, and carrying out freeze drying to obtain the waste cellulose acetate fiber-based regenerated cellulose aerogel. According to the invention, the problem that the waste cigarette filter cannot be efficiently recycled is solved, and the waste cellulose acetate fiber-based regenerated cellulose aerogel with low density, high specific surface area and high porosity is prepared.

The invention discloses a preparation method of soluble euglena polysaccharide, the method is a method I or a method II, the method I comprises the following steps: (1) alkali dissolution; (2) acid crosslinking; (3) oxidizing and breaking bonds; (4) adjusting the pH value; the second method comprises the following steps: (1) high-temperature key breaking; (2) alkali dissolution; and (3) adjusting the pH value to obtain the soluble euglena polysaccharide. The soluble euglena polysaccharide product prepared by the method disclosed by the invention is wide in application range and pollution-free to the environment, and the prepared soluble beta glucan has a good application prospect in the fields of cosmetics and medicines.

The invention relates to an acid-resistant Pulullan derivative, and a preparation method thereof. The preparation method is used for solving a technical problem that a conventional product is easily dissolved at acidic conditions. The invention also discloses the structural formula and a preparation method of the acid-resistant Pulullan derivative. The preparation method can be widely used for preparation of acid-resistant Pulullan derivatives.