45results about How to "The steps are simple and controllable" patented technology

The invention discloses a method for preparing nanometer silver halide colloids. The method comprises the following steps: placing solid paraffin into de-ionized water with temperature of 70-100 DEG C for stirring to obtain paraffin / water microemulsion; adding metal halide salts with the molar concentration of 0.01-0.1 mol / L and AgNO3 aqueous solution to the paraffin / water microemulsion by using a double-dipping method, keeping the temperature and stirring to obtain uniformly dispersed mixed microemulsion; standing and naturally cooling to the room temperature, taking out a paraffin mass condensed on a water surface after oil-water separation occurs in the mixed microemulsion , adding a small amount of dispersing agent to the remaining microemulsion, and continuously stirring to obtain a silver halide colloid with stable dispersion. In the invention, the whole reaction process by using the solidification and melting of paraffin, is simple and easy to control, green and environmental friendly, and the paraffin can be recycled, thereby the invention is particularly suitable for industrial production. The microcosmic shape and appearance of nano particle in the prepared product has the characteristics of uniform size, excellent dispersing stability and non-decomposition when exposing to light.

The present invention discloses a preparation method of loquat vinegar drink and relates to the technical field of drink processing. The loquat vinegar drink is prepared from loquat leaves, licorice, crystal sugar powder and pure water. The loquat leaves and licorice are boiled into solution, the solution, crystal sugar powder and pure water are poured into a porcelain jar, the temperature of the porcelain jar is heated to 85 DEG C until the crystal sugar powder is melt, the melt crystal sugar is cooled, acetic acid bacterium strains are inoculated into the cooled melt crystal sugar with a weight of 0.5%-2% of the total weight of the raw materials, the mixture is stirred evenly, and the stirred mixture is subjected to a sealed fermentation; after the completion of the fermentation, the obtained fermentation liquid is subjected to an acid regulation at an environment temperature of 20-28 DEG C and the total acid content of the fermentation liquid is controlled; and the acid regulated fermentation liquid is sterilized, the sterilized fermentation liquid is subjected to filling, and the fermentation liquid after being subjected to filling is put into a storage to be stored at 2-6 DEG C. The processes are simple, the steps are easy to control, and the prepared loquat vinegar drink is good in tastes, excellent in quality, soft in mouthfeel, refreshing and good in stability. Due to the addition of the licorice and loquat leaves, and at the same time, the loquat vinegar drink can prevent and cure symptoms of cough, excessive phlegm, etc., also has nutrients of the acetic acids, and is moderate in acidity and suitable for people at all ages.

The invention discloses a metal fiber brush and a preparation method thereof. The brush comprises conductive metal fibers and filling metal fibers. The length of the filling metal fibers is shorter than the length of the conductive metal fibers, one end of each filling metal fiber is flush with one end of each conductive metal fiber, the conductive metal fibers and the filling metal fibers are uniformly arranged along a length direction, and after compacting molding, the filling metal fibers and the conductive metal fibers are integrally wrapped by a metal wrapping sleeve. The preparation method comprises: winding the conductive metal fibers and the filling metal fibers together on a wire reel to form a metal fiber ring; and cutting the metal fiber ring, after the compacting molding, immersing one end of the metal fiber ring in an acid solution or aqueous alkali, and dissolving the filling metal fibers to obtain the metal fiber brush. The metal fiber brush is compact and reasonable in structure, high in fiber bonding strength, simple in preparation process, large in current carrying capability, small in contact resistance, long in service life, fast in sliding speed, small in heat productivity and small in debris amount, is suitable for industrial production, can replace a conventional carbon brush or a conventional metal fiber brush, and can satisfy the application demand for a large-power high-precision conductive slip ring.

The invention discloses a visible light degradation agent for dyeing wastewater treatment and a preparation method of the visible light degradation agent and belongs to the field of preparation of inorganic nano-composite materials. Hydrolyzable titanium salt is adopted as a main raw material, soluble tin salt and silver salt are adopted as doping agents of tin and silver elements, and eventually Sn and An co-doped TiO2 is obtained through the processes of hydrolysis, grinding, calcination and the like; and the TiO2 has an excellent degradation property for methylene blue under visible light. The nano powder prepared by the invention has the characteristics of small granularity, regular appearance, uniformity in distribution, good dispersivity and the like; and the technology has an industrial popularization value due to high synthesis speed, low cost, high productivity and zero contamination.

The invention relates to a preparation method of thermosensitive liposome with a whitening effect. The preparation method is characterized by comprising the following steps: A, weighing a whitening composition, liposome, a membrane stabilizer, ethyl alcohol, glycerol and deionized water; B, adding the liposome and the membrane stabilizer into the ethyl alcohol, stirring under the condition that the temperature is 20 to 25 DEG C and the rotating speed is 300 to 800 rpm till a mixture is completely dissolved; adding the glycerol and continuously stirring till the liquid becomes clear and transparent to obtain a lipid membrane mixed solution; C, adding the whitening composition into the lipid membrane mixed solution and stirring under the condition that the temperature is 20 to 25 DEG C and the rotating speed is 300 to 800 rpm till the liquid becomes clear and transparent to obtain a whitening agent and lipid membrane pre-mixed solution; D, adding the whitening agent and lipid membrane pre-mixed solution into the deionized water, stirring for 10 minutes under the condition that the temperature is 20 to 25 DEG C and the rotating speed is 300 to 800 rpm, putting into a refrigerator andreducing the temperature to 2 to 5 DEG C; then at the pressure of 1500 bar, homogenizing for 1 to 3 times by using a high pressure homogenizer, thus obtaining the thermosensitive liposome with the whitening effect. The thermosensitive liposome with the whitening effect, disclosed by the invention, has the beneficial effects of simultaneous loading of three whitening active substances, good whitening effect and thermosensitive characteristic after transdermal absorption.

The invention provides a flame-retardant scraping-resistant photodiffusion PP material and a preparation method thereof. The flame-retardant scraping-resistant photodiffusion PP material comprises the following components in parts by weight: 75-95 parts of PP, 2-10 parts of a brominated flame retardant, 0.5-5 parts of nano antimonous oxide, 0.2-5 parts of an organosilicon polymer, 0.2-1 part of flame-retardant oil, 0.1-0.5 part of an antioxidant, 0.1-0.5 part of a photostabilizer, 0.1-0.5 part of a transparent nucleating agent, 0.1-0.5 part of a lubricant, and 0.1-0.5 part of an acid absorbent. By selecting specific type of functional additives and under synergistic mechanism of all raw materials, the PP material finally has the advantages of high transparency and haze, flame retardance, scraping resistance, low cost, excellent toughness, light density, excellent yellowing resistance, high thermal deformation temperature, no toxicity and the like and is recyclable, and the usage performance of the PP material can be greatly promoted.

The invention relates to iron-amino functionalized mesoporous silica and a preparation method and application thereof.The iron-amino functionalized mesoporous silica is obtained by sequentially conducting amino modification and iron loading on mesoporous silica, the specific surface area of the iron-amino functionalized mesoporous silica is 150-600 m < 2 > / g, the pore volume of the iron-amino functionalized mesoporous silica is 0.4-1.5 cm < 3 > / g, and the average pore diameter of the iron-amino functionalized mesoporous silica is 5-30 nm. The iron-amino functionalized mesoporous silica provided by the invention has proper pore size and surface reaction activity, has good adsorption effect on glyphosate in water, high adsorption rate and large adsorption capacity, and is relatively low in raw material cost, simple and controllable in preparation steps, mild in reaction condition, non-toxic and environment-friendly in preparation process and hopeful to realize industrial production.

The invention discloses a method for preparing C-N-codoped nano-TiO2 powder. The method comprises the following steps of: mixing tetra-n-butyl titanate and absolute ethanol in a volume ratio of 1:(5-10), and adding 0.1 to 1.0 mass percent of urea to obtain colorless transparent mixed liquor; under stirring conditions, conveying the air containing water vapor into the mixed liquor and reacting; and drying obtained emulsion to obtain white powder, and calcining at the temperature of between 300 and 500 DEG C to obtain C-N-codoped TiO2 nanoparticles. In the method, the whole reaction process is controlled by utilizing steam, and organic surfactants and dispersants are not needed to be added, so the invention has the characteristics that the process is simple and easy to control and the production process is environment-friendly; and a prepared product has higher purity, microscopic sizes of particles are uniform, the dispersibility is high, and the method is particularly suitable for continuous industrial production.

The invention discloses a preparation method of a carbon aerogel material with ultra-high specific surface area. The method comprises four steps: wet ball milling of biomass fibers, TEMPO oxidation of the ball-milled biomass fibers, preparation of oxidized biomass fiber aerogels, Pyrolytic carbonization. The cellulose carbon aerogel prepared by the invention has a unique three-dimensional sheet-like stacking structure, which provides great potential for its application as a material such as a catalyst, an adsorbent and an electrode capacitor.