890 results about "Aqueous ethanol" patented technology

The invention provides a method for efficiently synthesizing basic nickel carbonate, and belongs to the technical field of chemical preparation. Comprising the following steps: (1) preparing a mixed solution of sodium carbonate and sodium hydroxide; (2) under low-temperature and high-speed stirring conditions, dropwise adding a nickel salt solution into the mixed solution, adding a competitive adsorbent, adjusting the pH value of the solution, then heating, continuing stirring reaction, separating the competitive adsorbent by a magnet, centrifuging, washing and collecting prepared primary basic nickel carbonate; and (3) recrystallizing the primary basic nickel carbonate in an ethanol water solution, and drying to obtain the basic nickel carbonate. According to the preparation method disclosed by the invention, the content of impurity ions in the product is reduced, so that the high-purity basic nickel carbonate can be prepared, the synthesis efficiency is high, the production cost is relatively low, the method is green and environment-friendly, the competitive adsorbent can also be repeatedly utilized and recycled, the production cost is reduced, and the method has a wide application prospect.

The invention provides an external-soft and internal-rigid plugging agent, a preparation method and a water-based drilling fluid, the preparation method of the external-soft and internal-rigid plugging agent comprises the following steps: (1) reacting silicon dioxide with a vinyl-containing silane coupling agent in an ethanol water solution to obtain modified silicon dioxide; (2) mixing the modified silicon dioxide, acrylamide, 2-acrylamido-2-sodium methylpropanesulfonate, sodium p-styrenesulfonate, N, N-methylene bisacrylamide and water, introducing nitrogen to remove oxygen under stirring and heating conditions, and then adding an initiator to react; and (3) filtering, washing and drying the product obtained in the step (2) to obtain the plugging agent with soft outside and rigid inside. The plugging agent can effectively combine the advantages of high strength of a rigid plugging agent and high adaptive capacity of a flexible plugging agent, can adapt to the sizes and shapes of micro-cracks and cracks in a stratum, and effectively plugs pores and cracks in the surface of a well wall.

The invention discloses a preparation method of a V-shaped porous starch-grease inclusion compound. According to the method, V-type porous starch is used as a raw material and is blended with grease to prepare the starch-grease inclusion compound. The method specifically comprises the following steps: dispersing grease in a 60% ethanol aqueous solution, adding V-shaped porous starch, magnetically stirring for 2 hours at 25-30 DEG C, centrifuging the solution, washing the obtained precipitate twice by absolute ethyl alcohol, freeze-drying the washed precipitate, grinding, and sieving by a 100-mesh sieve, thereby obtaining the V-shaped starch-grease inclusion compound. According to the method, 60% ethanol is adopted as a solvent, efficient embedding of the grease is achieved under the normal temperature condition, and the adverse effect of a traditional heat treatment method on the oxidation stability of the grease is avoided. According to the method, on the basis of a spiral cavity structure and a honeycomb-shaped pore structure of V-shaped porous starch, grease is efficiently embedded in an inner cavity of the starch by utilizing a blending adsorption method, the content of free grease on the surface is reduced through the synergistic effect of physical adsorption and intermolecular acting force, and the stability of grease embedding is improved.

The invention belongs to the technical field of rare earth materials, and discloses a preparation method of high-purity sphere-like nano yttrium oxide powder. The method comprises the following preparation steps: (1) adding Y2O3 powder into concentrated hydrochloric acid, heating, stirring and dissolving, and then diluting with an ethanol water solution to obtain a YCl3 solution; (2) mixing ammonia water, a quaternary ammonium base aqueous solution and ethanol to prepare a precipitant solution, and dropwise adding the precipitant solution into the YCl3 solution in the step (1) for precipitation reaction to precipitate Y < 3 + >; and (3) separating and drying the precipitate obtained in the step (2), and then carrying out high-temperature calcination to obtain the high-purity spheroidal nano yttrium oxide powder. According to the preparation method, the ethanol water solution of YCl3 is used as a reaction solution, ammonia water is used as a main precipitator, quaternary ammonium base is used as an auxiliary precipitator and a surface active structure regulating agent, and yttrium oxide powder with the purity not lower than 5N and the particle size smaller than 100nm can be obtained.

The invention discloses a preparation method of a copper-cerium-based core-shell catalyst, which comprises the following steps: A, putting Cu (NO3) 2.3 H2O into an ethanol aqueous solution, then adding TiO2, a NaOH aqueous solution and a glucose aqueous solution, and uniformly mixing and precipitating the solutions through magnetic stirring; b, the solution is subjected to suction filtration and vacuum drying, and a Cu2O-TiO2 sample is obtained; c, carrying out Mn doping treatment on the Cu2O-TiO2 sample; d, carrying out annealing treatment on the Cu2O-TiO2 sample subjected to the doping treatment; e, the annealed Cu2O-TiO2 sample is added into an ethanol water solution, then a NaCl water solution and a (NH4) 2Ce (NO3) 6 ethanol solution are sequentially added, and uniform mixing and precipitation of the solutions are achieved through magnetic stirring; and F, centrifugally separating and drying the solution obtained in the step E, and finally calcining the dried product to obtain the copper-cerium-based core-shell catalyst. According to the invention, the defects in the prior art can be overcome, and the synergistic oxidation effect of the catalyst on elemental mercury and escape ammonia is improved.

The invention belongs to the field of natural product extraction, and relates to a method for extracting and separating flavonoid compounds from Artemisia chrysantha, which comprises the following steps: carrying out reflux extraction on the dry overground part of Artemisia chrysantha by using 70% ethanol, loading to a balanced D101 macroporous adsorption resin column, sequentially eluting by using water, a 20% ethanol aqueous solution, a 50% ethanol aqueous solution and a 70% ethanol aqueous solution, and collecting the eluent. Four fractions from Fr. I to Fr. IV are obtained; respectively carrying out polyamide column chromatography separation on Fr.II to Fr.IV, and sequentially eluting with a 20% ethanol aqueous solution, a 50% ethanol aqueous solution and a 70% ethanol aqueous solution to respectively obtain three fractions; and further purifying the Fr.II-1, the Fr.II-2, the Fr.III-1, the Fr.III-2, the Fr.III-1 and the Fr.III-3 by virtue of a Sephadex LH-20 column, so as to finally obtain seven flavonoid compounds. According to the method, only the ethanol water low-toxicity solvent is used for extraction and preparation, organic solvents with high toxicity are not used, the method is green and environment-friendly, the extraction efficiency is high, the number of extracted compounds is large, chemical components of the artemisia europaea medicinal material are enriched, the resource source of active components is widened, and a foundation is laid for follow-up research.

The invention belongs to the technical field of ceramic materials, and particularly relates to a high-strength building ceramic material and a preparation method thereof. The high-strength building ceramic material is prepared from the following raw materials in parts by weight: 20 to 30 parts of potassium feldspar, 15 to 23 parts of kaolin, 37 to 45 parts of solid waste-based silicon carbide, 1 to 4 parts of talc, 3 to 8 parts of modified mullite whisker and 2 to 5 parts of filler, a preparation process of the modified mullite crystal whiskers comprises the following steps: (1) adding mullite crystal whiskers into an ethanol water solution containing a silane coupling agent, and heating for reaction to obtain pretreated mullite crystal whiskers; and (2) adding the mullite whiskers pretreated in the step (1) into a nickel sulfate aqueous solution, then adding triethylamine and sodium thiosulfate, and carrying out a heating reaction to obtain the modified mullite whiskers. After the raw material components are combined, preparation of a high-strength ceramic material is facilitated, the heat conductivity coefficient can be increased, the heat conduction effect can be enhanced, and the ceramic material is suitable for common home decoration and high-heat-conductivity floor heating ceramic tiles.

The invention discloses an ethanol-regulated layered metal oxide, a preparation method thereof and an application of the ethanol-regulated layered metal oxide in preparation of a single-walled carbon nanotube by catalytic cracking of methane, alkali liquor and soluble metal salt containing Fe, Mo, Mg and Al are dropwise added into an alkaline ethanol aqueous solution to form a precipitate, and the ethanol-regulated Fe-Mo / MgAl-LDOs catalyst is obtained after aging, drying and calcining. The catalyst is applied to methane catalytic cracking to prepare the single-walled carbon nanotube. According to the technical scheme, the dispersity of active components in the layered metal oxide is effectively improved, the layered metal oxide has larger specific surface area and pore diameter, but the pore volume is reduced, and the situation that growth of SWCNTs stops due to wall collision in the growth process is effectively avoided.

The invention belongs to the technical field of biomedicine, and particularly relates to a high-strength regenerated silk fibroin material and a preparation method thereof.The preparation method specifically comprises the step that chemical crosslinking silk fibroin hydrogel is sequentially subjected to gradient alcohol treatment and vacuum drying treatment, and the high-strength regenerated silk fibroin material is obtained, the gradient alcohol treatment refers to staged treatment by adopting an ethanol aqueous solution, the concentration of the ethanol aqueous solution in each stage is fixed, and the concentrations of the ethanol aqueous solutions in different stages are increased along with the increase of stage serial numbers; the finally prepared high-strength regenerated silk fibroin material has a double-cross-linked network structure, and the double-cross-linked network structure is formed by intertwining a silk fibroin chemical cross-linked network and a beta folding structure physical cross-linked network. The preparation method disclosed by the invention is simple and easy to implement, and the compression mechanical property (the compression modulus is greater than or equal to 0.2 GPa) of the regenerated silk fibroin material is remarkably improved.

The invention discloses a wood-based composite phase-change material and a preparation method thereof, and belongs to the technical field of phase-change materials.The preparation method of the wood-based composite phase-change material comprises the following steps that wood is cut and then added into delignification liquid to be heated, the wood is taken out and washed with water, and delignified wood is obtained; the delignification wood is added into the modification liquid to be heated, and after being taken out, the delignification wood is washed and dried to obtain pretreated wood; mixing polyethylene glycol, citric acid and boric acid, heating and stirring to obtain a phase change material; dipping the pretreated wood into the phase change material for vacuum dipping, taking out and drying to obtain the phase change material. The modified liquid is prepared from an ethanol water solution, a modified filler, 2-(3, 4-cyclohexene oxide) ethyltrimethoxysilane and triethylamine. The delignification liquid and the modification liquid are adopted for pretreating the wood, so that the wood can be better firmly combined with the phase change material, leakage is prevented, and the finally prepared wood-based composite phase change material has excellent heat management capacity and stability.

The invention relates to the technical field of self-cleaning coatings, in particular to a two-component inorganic super-hydrophilic self-cleaning coating and a preparation method and application thereof.The preparation method comprises the following steps that 1, gamma-aminopropyltriethoxysilane is dissolved in an ethanol water solution, then titanium dioxide sol is added, stirring reaction is conducted for 2-4 h at the temperature of 40-50 DEG C, and modified titanium dioxide sol is obtained; (2) dispersing nano-montmorillonite in ethanol, then adding tea polyphenol, and performing ultrasonic dispersion for 0.5-1 hour to obtain a modified nano-montmorillonite suspension; (3) mixing a cerium nitrate solution with the alumina sol, then adding the modified montmorillonite suspension, and uniformly mixing to obtain composite alumina sol; and (4) mixing and cross-linking the prepared modified titanium dioxide sol and composite aluminum oxide sol to obtain the self-cleaning coating. The long-acting super-hydrophilic self-cleaning coating provided by the invention has the advantages of excellent self-cleaning capability, stable and long-acting super-hydrophilicity, wear resistance and antistatic effect.

The invention relates to the technical field of separation and purification, in particular to a purification method of eugenol, which comprises the following steps: (a) dissolving crude eugenol in an ethanol aqueous solution to prepare a solution with eugenol mass concentration of 20-30%; (b) adding a composite protective agent into the solution, uniformly stirring and standing to obtain a mixed solution, the composite protective agent comprising modified chitosan, sodium ascorbate and nano-silica; (c) carrying out reduced pressure evaporation on the mixed solution, and recovering the solvent to obtain a concentrated solution; (d) adding the concentrated solution into a glycine aqueous solution with the mass concentration of 1-2%, uniformly stirring and standing; and (e) carrying out segmented temperature control rectification on the concentrated solution treated in the step (d), and collecting a target fraction to obtain the high-purity eugenol. By introducing a novel protective agent system and a staged temperature control rectification technology, the occurrence rate of thermal decomposition and oxidation reaction is remarkably reduced, and the product purity and the production efficiency are improved.

The invention relates to a method for extracting a tobacco extract for a tobacco-flavor electronic cigarette, which comprises the following steps of: respectively adding a tobacco raw material and an extracting agent propylene glycol into continuous countercurrent extraction equipment according to the weight ratio of the tobacco raw material to the extracting agent propylene glycol of (0.8-3.0): 1, washing the obtained solid by using an ethanol water solution, and collecting a washing solution, thereby obtaining the tobacco extract for the tobacco-flavor electronic cigarette. And carrying out reduced pressure distillation on the washing liquid to remove ethanol to obtain reduced pressure distillation residues, and combining the reduced pressure distillation residues with the extracting solution to obtain the tobacco extract. The invention also relates to an application of the tobacco extract in a tobacco-flavored electronic cigarette. The extract obtained through the continuous countercurrent extraction process contains nicotine, organic acid and reducing sugar components from tobacco raw materials, the components can well present typical cigarette smell and aroma in the heating atomization process, and the tobacco-flavor electronic cigarette with the real cigarette smell and aroma style is achieved. The extract provided by the invention can be directly used in an electronic cigarette atomization product, and subsequent complicated processes such as separation and purification are not required to be introduced.

The invention discloses a high-performance malachite green adsorbent as well as a preparation method and application thereof, and belongs to the technical field of preparation of malachite green adsorbents. The method comprises the following steps: with a carbon-based adsorbent as a raw material and an ethanol aqueous solution and a sodium hydroxide solution as modifiers, heating and stirring on a magnetic stirrer to form a turbid liquid; and further carrying out solid-liquid separation on the turbid liquid, washing a solid product with deionized water until the solid product is neutral, and drying. The prepared high-performance malachite green adsorbent is used for treating malachite green printing and dyeing wastewater, and compared with a carbon-based adsorbent raw material, the adsorption performance is effectively improved. The preparation method of the high-performance malachite green adsorbent is simple, rapid, low in energy consumption and good in environmental protection property.

The invention provides a preparation method and application of low-bath-ratio and high-viscosity hydroxypropyl carboxymethyl composite starch ether, and relates to the technical field of starch deep processing. The method comprises the following steps: S1, premixing corn starch with a compound base catalyst and magnesium stearate, and spraying an ethanol water solution for alkalization; s2, adding epoxypropane to carry out first-stage etherification, and then adding sodium chloroacetate to carry out second-stage etherification; and S3, after the reaction is finished, performing vacuum drying, crushing and sieving to obtain the high-viscosity hydroxypropyl carboxymethyl composite starch ether. Wherein the composite alkali catalyst comprises sodium hydroxide, sodium carbonate and calcium oxide. The starch ether obtained by the method has the advantages of high substitution degree, high viscosity, low solvent consumption and low energy consumption, and overcomes the defects of the traditional semi-dry method.

The invention discloses a preparation method of non-denatured II-type collagen for promoting bone and cartilage growth, and belongs to the technical field of II-type collagen extraction.The preparation method comprises the following steps that 1, pretreatment is conducted; (2) soaking in a salt solution: adding the salt solution into the cartilage particles for soaking treatment to obtain a precipitate; (3) soaking in an organic solvent; and (4) drying and crushing the solid matter to obtain the traditional Chinese medicine composition. The salt solution is prepared from the following components in percentage by mass: 1 to 5 percent of sodium chloride, 0.2 to 0.8 percent of lecithin, 0.3 to 1 percent of plant extract and the balance of water; the plant extract is a water extract of rhizoma kaempferiae, chicory and houttuynia cordata; the organic solvent is an ethanol water solution and pullulan polysaccharide. According to the method disclosed by the invention, the saline solution is improved, so that the structural stability of the collagen is improved while the dissolution of non-collagen components is promoted, the denaturation of the type II collagen is avoided, and the extraction efficiency of the non-denatured type II collagen is improved.

The invention discloses a preparation method and application of a bimetallic sulfide / three-dimensional porous carbon catalyst, and relates to the technical field of electrolyzed water catalysts.The preparation method comprises the following steps that melamine sponge is cleaned, and the clean melamine sponge is obtained; the preparation method comprises the following steps: dissolving metal salt 1 and metal salt 2 in an ethanol aqueous solution, and adding alkali and an aniline monomer to obtain a precursor solution; completely soaking the clean melamine sponge in a precursor solution, carrying out constant-temperature hydrothermal reaction, and sequentially washing and drying to obtain the melamine sponge anchored with bimetal ions; introducing inert gas for protection, and performing high-temperature vulcanization treatment to obtain the three-dimensional porous carbon catalyst embedded with the bimetallic sulfide heterostructure. The catalyst comprises uniformly dispersed bimetallic sulfide nanoparticles and a spongy three-dimensional porous carbon carrier, shows excellent bifunctional catalytic activity and stability when being applied to an electro-catalytic water decomposition reaction, and has a wide application prospect.

This invention belongs to the field of membrane material preparation and modification technology, and relates to a method for pre-wetting the surface of a hydrophobic ceramic membrane. The ceramic membrane is immersed in a cyclohexane solution of perfluorooctyltrimethoxysilane for 3-4 hours. After immersion, the ceramic membrane is dried in an oven. An ethanol solution is forced to circulate through the ceramic membrane to pre-wet the separation layer. The pre-wetting process proposed in this invention is simple, highly controllable, and easily scaled up to pre-wet multi-channel hydrophobic ceramic membranes. This invention achieves coarse adjustment of the wetting degree by controlling the concentration of the ethanol-water solution, and further fine adjustment by combining the circulation time of the ethanol-water solution, thus achieving more precise control of the wetting degree and optimal improvement of the uniformity of the hydrophilic coating.

The invention discloses a mildew-proof green-keeping agent for bamboo wood, a preparation method and application. The preparation method of the bamboo wood mildew-proof green-keeping agent comprises the following steps: S1, adding chitosan into an acetic acid aqueous solution, and stirring until the chitosan is dissolved to obtain a mixed solution A; s2, adding copper salt into deionized water, and stirring until the copper salt is dissolved to obtain a mixed solution B; s3, adding cinnamyl aldehyde into an ethanol water solution, and stirring until cinnamyl aldehyde is dissolved to obtain a mixed solution C; and S4, the mixed solution A, the mixed solution B and the mixed solution C are mixed at the same time, stirring is conducted again under the water bath condition till the cinnamyl aldehyde chitosan copper is obtained through a reaction, and the cinnamyl aldehyde chitosan copper serves as the mildew-proof and green-keeping agent for the bamboo wood. Bamboo obtained through the treatment method is better in green-keeping and mildew-proof effects, bamboo green of the bamboo treated through the mildew-proof green-keeping agent is dark green, the bamboo can be kept green indoors and outdoors for a long time, the efficient mildew-proof performance is achieved, the treatment method is simple, and the mildew-proof green-keeping agent is non-toxic and harmless.

The present invention provides a VD furnace cover castable lining and a preparation method thereof, which belongs to the technical field of high-temperature refractory materials, comprising the steps of: mixing an emulsion of hydrogenated silicone oil, aminopropyltriethoxysilane, and pearl sand, heating and soaking, and drying to obtain modified pearl sand; mixing graphite, acetic acid, tetrabutyl titanate, and nano silicon powder, dropping an ethanol aqueous solution, adjusting the pH value to acidic, aging, drying, heating at a high temperature under an inert gas environment, and cooling to obtain TiC-Ti3SiC2 composite coating graphite; mixing brown corundum, silicon carbide, α-Al2O3 powder, calcium aluminate cement, TiC-Ti3SiC2 composite coating graphite, and modified pearl sand, drying, adding distilled water, stirring, putting into a mold, casting and molding, standing, taking out, drying, spraying silicon powder on the surface, and performing heat treatment under a nitrogen atmosphere to obtain a VD furnace cover castable lining. The present invention can improve the thermal insulation performance of the VD furnace cover while improving the thermal shock stability of the VD furnace cover castable lining.

The invention provides resistant dextrin as well as a preparation method and application thereof, and belongs to the technical field of preparation of resistant dextrin. The preparation method of the cassava starch resistant dextrin comprises the following steps: gelatinizing cassava starch, mixing the gelatinized cassava starch with pullulanase, carrying out debranching enzymolysis, mixing supernate with an ethanol water solution, washing precipitates with absolute ethyl alcohol, mixing the precipitates with water, recrystallizing at 45-55 DEG C, and collecting crystal substances, so as to obtain the cassava starch resistant dextrin. The cassava starch resistant dextrin with high purity and high resistant starch content can be prepared by taking cassava starch as a raw material and pullulanase as debranching enzyme and adopting a green preparation process of debranching, alcohol precipitation and recrystallization, and the resistant starch content in the prepared resistant dextrin is 50-70%. The preparation method is energy-saving and environment-friendly, and can be commercially applied. Theoretical guidance is provided for preparing the resistant dextrin based on a green process, and a basis is provided for improving the application of the resistant dextrin in the food industry.

The invention relates to the technical field of food packaging, in particular to an environment-friendly easy-to-uncover paper cover and a preparation method thereof.The environment-friendly easy-to-uncover paper cover sequentially comprises a heat sealing coating, a waterproof coating, a paper base layer and a reinforcing coating, and the heat sealing coating comprises, by mass, 60-70 parts of water-based polyolefin dispersoid and 30-40 parts of acrylic ester; the waterproof coating comprises the following components in parts by mass: 10-30 parts of a waterproof agent and 70-90 parts of an ethanol aqueous solution, and the volume fraction of the ethanol aqueous solution is 50%; the reinforced coating is prepared from the following components in parts by mass: 30 to 40 parts of calcium carbonate, 35 to 50 parts of kaolin, 1 to 2 parts of a water-retaining agent, 12 to 15 parts of styrene-butadiene latex, 5 to 8 parts of water and 0.1 to 0.2 part of pigment. The environment-friendly easy-to-uncover paper cover is not prone to being affected with damp and upwarping and can be recycled through a recycling and repulping process, and the sealing fastness is controllable through the combination of the waterproof coating and the heat sealing coating.

The invention relates to a medicine for skin regeneration and repair and a preparation method thereof, and belongs to the technical field of biological medicine, the medicine comprises cyperus esculentus extract peptide, brooklet anemone root tremella extract, rhodomyrtus tomentosa root-suberect spatholobus stem-radix cyathulae composite extract, pomegranate peel polyphenol and the like. The cyperus esculentus extracted peptide is a product which is more than 1kDa and is obtained by performing enzymolysis on cyperus esculentus through cellulase, alpha-chymotrypsin and ficin protease in sequence and then performing purification through a G-50 sephadex column; the tremellodon gelatinosum tremella extract is a product which is less than 3kDa and is obtained by performing common enzymolysis on tremellodon gelatinosum tremella sporocarp through cellulase and bromelain; the rhodomyrtus tomentosa root-suberect spatholobus stem-radix cyathulae composite extract is a product obtained by performing gradient extraction on rhodomyrtus tomentosa root, suberect spatholobus stem and radix cyathulae through an ethanol water solution to obtain an extract, and performing polyamide resin column adsorption and LH-60 sephadex column purification in sequence. A good repairing system is constructed by multiple components, and wound repairing and healing are accelerated.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to double-orange granules and a preparation method thereof. The double-orange granules comprise the following raw materials: a volatile oil inclusion compound, dry paste powder, low-viscosity dextrin, powdered sugar and amber powder. The volatile oil clathrate compound is prepared by the following steps: adding water into beta-cyclodextrin, uniformly mixing, and then adding volatile oil for clathration, thereby obtaining the volatile oil clathrate compound. The mass ratio of the beta-cyclodextrin to the water is 1: (4-6), the mass ratio of the volatile oil to the beta-cyclodextrin is 1: (9-12), and the dry paste powder is prepared by adding the double-orange particle extract into low-viscosity dextrin and carrying out spray drying. The preparation method of the double-orange granules comprises the following steps: mixing all the raw materials, granulating by taking a 55-65% ethanol water solution as an adhesive, finishing the granules, drying, and finishing the granules again. According to the invention, by optimizing the variety and dosage of the auxiliary materials, the tower sticking phenomenon in spray drying can be obviously improved, and the yield of spray drying and the particle yield of wet granulation are improved.

The invention discloses a gradient alcohol extraction preparation method of compound honeysuckle flower drops for improving T cell activity, and relates to the technical field of traditional Chinese medicine compound preparations, honeysuckle flower and radix astragali are selected for pretreatment, an ethanol aqueous solution and an interaction regulating agent are added for infiltration, an online traditional Chinese medicine compound preparation HPLC is adopted for dynamic alcohol concentration adjustment and temperature extraction under monitoring of the traditional Chinese medicine compound preparation, the method disclosed by the invention has the advantages that the interaction regulating agent is added in the raw material infiltration stage to block bad interaction among active components, and the online monitoring system is utilized to dynamically adapt the ethanol concentration and the extraction temperature to realize step-by-step efficient dissolution of the multi-polar components; the antioxidant is matched to inhibit oxidation of thermosensitive components, and the solubilizer assists dissolution of insoluble components, so that the core defect that synergistic extraction of multi-polar active components, degradation of the thermosensitive components and interaction inhibition of the components in the compound honeysuckle flowers cannot be considered in the prior art is overcome, and loss or antagonism of the active components is effectively avoided.

The invention relates to a preparation method of a paris polyphylla extract as well as a product and application of the paris polyphylla extract. The preparation method comprises the following steps: crushing paris polyphylla, mixing the crushed paris polyphylla with an ethanol water solution, and carrying out reflux extraction to obtain an extracting solution; concentrating the extracting solution to obtain an extract, dissolving the extract in an ethanol aqueous solution, loading the extract to macroporous adsorption resin, and eluting with the ethanol aqueous solution to obtain an eluent; concentrating the eluent to obtain an extract, dissolving the extract in an ethanol aqueous solution to obtain a decolorized stock solution, mixing the decolorized stock solution with aluminum oxide for decolorization, and filtering to obtain a supernatant to obtain a decolorized solution; and concentrating and drying the decolored solution to obtain the product. According to the method, natural pigments in the plant raw materials are removed while the saponin extraction rate is guaranteed, and the appearance quality of the product is improved.

The invention belongs to the technical field of colored glazed glass, and particularly relates to colored glazed glass and a preparation method thereof. The preparation method of the colored glazed glass comprises the following steps: (1) selecting a glass sheet, cleaning, cutting and edging for later use; (2) printing glaze on the outer surface of the glass treated in the step (1) by adopting a silk-screen printing process, and drying; (3) carrying out toughening treatment on the glass treated in the step (2); (4) soaking the glass treated in the step (3) in an ethanol water solution containing a silane coupling agent, washing and drying for later use; and (5) taking two pieces of glass treated in the step (4), coating the inner surfaces of the two pieces of glass with a sizing material, and curing to obtain the colored glaze glass. The adhesive film of the colored glazed glass has good adhesive property and mechanical property, prevents the glass from being broken and splashed, and can resist the erosion of the external environment, maintain the adhesive property and mechanical strength of the adhesive film and prolong the service life of the colored glazed glass.

The invention discloses a lipoic acid pharmaceutical composition and a preparation method thereof, the form of the pharmaceutical composition is wet particles, and the pharmaceutical composition comprises lipoic acid, hydroxy propyl cellulose and an ethanol aqueous solution; the preparation method comprises the following steps: adding an ethanol aqueous solution of hydroxy propyl cellulose into a lipoic acid-containing mixed material, carrying out wet granulation, and controlling the concentration of the ethanol aqueous solution to be 20-60%, the problems of sticking and cracking in the tabletting process are avoided, and process feasibility is achieved; moreover, the dosage of the ethanol aqueous solution of the hydroxy propyl cellulose is only 15-30% of the mass of the lipoic acid, so that the problem of difficult particle drying caused by excessive wetting is avoided, and industrial production is facilitated.

The invention relates to a preparation method of a brown glass bottle for glue storage, which is characterized by comprising the following steps: (1) carrying out acid treatment on the inner surface of the glass bottle, adding a Tris-HCl solution with the pH value of 8-9 and 50-100g of dopamine into the bottle, stirring, mixing, washing and drying to obtain the glass bottle with the inner surface grafted with black polydopamine; (2) activating the surfaces of the nano inorganic particles, adding 20-30 drops of a silane coupling agent into an ethanol water solution to carry out hydrolysis reaction, then adding 50-100g of the surface-activated nano inorganic particles, stirring, washing and drying to obtain the nano inorganic particles grafted with the silane coupling agent; and (3) preparing an acid / alkali solution of which the pH value is greater than 4 in the glass bottle of which the inner surface is grafted with the black polydopamine, adding 10-50g of the nano inorganic particles grafted with the silane coupling agent, stirring for reaction, washing, and drying to obtain the black glass bottle of which the surface is deposited with the nano inorganic particles. The preparation method has the advantages that the preparation method is simple and convenient to operate; the glue storage bottle capable of keeping away from light and controlling metal ion precipitation can be manufactured.

The invention discloses a core-shell structure aerogel and a preparation method and application thereof in refractory bricks, and belongs to the technical field of thermal insulation materials, and the preparation method comprises the following steps: adding zirconium oxychloride into an ethanol water solution at room temperature for hydrolysis, then adding carboxylated silicon dioxide aerogel, stirring and mixing, then adding a gelling agent to form a sol solution, and carrying out vacuum drying to obtain the core-shell structure aerogel. Performing sealed aging to obtain wet gel, and performing solvent replacement, supercritical drying and crushing to obtain core-shell structure aerogel; the method for applying the aerogel to the refractory brick comprises the following steps: adding the aerogel with the core-shell structure into an organic solvent for soaking, then adding the refractory brick raw materials with the particle size of 0.05-0.2 mm for mixing, then adding the refractory brick raw materials with the remaining particle size for mixing, and finally adding a bentonite solution for uniformly mixing to obtain a refractory brick mixture; and carrying out compression molding, high-temperature calcination and cooling to obtain the refractory brick. The prepared refractory brick has the characteristics of high strength, high temperature resistance and low heat conductivity, and the problem that the strength and heat insulation of a traditional refractory brick cannot be considered at the same time is solved.