30results about How to "The operation steps are simple and easy to control" patented technology

The invention belongs to the field of aerogel material preparation technologies, and relates to a method for preparing a hydrophobic SiO2 aerogel by virtue of normal pressure drying. During the preparation, a two-step method is adopted, an organic silicon source as precursor, water as a hydrolysis agent, absolute ethyl alcohol as a solvent, acid and alkali as catalysts, and an organic silicon solution and a surface modifier. The preparation method comprises the following steps: mixing and stirring the organic silicon source, the water and the absolute ethyl alcohol in proportion, and respectively adding an acid catalyst and an alkaline catalyst by virtue of an acid and alkali two-step method to regulate pH value so as to form gel; performing solvent replacement on the aged gel, carrying out surface hydrophobic modification, replacing a hydrophilic group on the surface of the gel through a hydrophobic group, so that the gel is hydrophobic; finally, performing normal pressure drying to obtain the hydrophobic SiO2 aerogel. The method disclosed by the invention can be used for reducing the preparation cost of the aerogel; moreover, according to a hydrophobicity test, the contact angle can reach about 158 degrees, thereby showing that the hydrophobicity is good.

The invention belongs to the field of preparation techniques of aerogel materials, and relates to a preparation method of a hydrophobic SiO2 aerogel-activated carbon composite material. The preparation method comprises the following steps: by using a silicon source as a reactant, water as a hydrolytic agent, anhydrous alcohol as a solvent and acid as a catalyst, adding a hydrophobic modifier to carry out hydrolysis at 40-60 DEG C while keeping stirring; after completely finishing hydrolysis, adding alkali to regulate the pH value, continuing stirring to initiate polycondensation reaction, adding the solution into previously weighed activated carbon, and applying ultrasonic to form a wet gel; replacing the solvent water of the wet gel with the anhydrous alcohol; and finally, drying to obtain the hydrophobic aerogel-activated carbon composite material. The aerogel composite material prepared by the method provided by the invention solves the problems of high price of aerogel and short service life of activated carbon.

The invention provides a preparation method for aerogel for adsorbing nitrocompound. A silicon source, water and absolute ethyl alcohol are adopted as reactant, acid is adopted as catalyst, hydrophobic modification agent is added into mixture, the mixture is continuously stirred at the temperature ranging from 40 DEG C to 60 DEG C, finally, alkali is added in the mixture, and the mixture is in standing to form aerogel after pH (potential of hydrogen) is adjusted to 6.5 to 8. Solvent displacement of the wet aerogel is realized by the absolute ethyl alcohol, and the water is cemented out. Finally, hydrophobic SiO2 aerogel can be prepared via drying. The hydrophobic modified silica aerogel prepared by the preparation method has characteristics of high hydrophobicity, high porosity, large specific surface area and low density, can excellent adsorb nitrocompound in wastewater, and has excellent reproducibility as compared with frequently used adsorbent such as activated carbon and the like.

The invention discloses a high-temperature-resistant polymer for acidizing fracturing and a preparation method of the polymer. The polymer is prepared by polymerizing raw materials comprising the following components: acrylamide, methacrylamide, a cationic monomer, a temperature-resistant salt-resistant monomer, a molecular weight regulator, an initiator and water; wherein the total mass of all components except water is taken as 100%, the mass percent of the components are as follows: 20%-65% of the acrylamide, 5%-15% of the methacrylamide, 5-18% of the cationic monomer, 15%-55% of the temperature-resistant and salt-resistant monomer, 0.01%-0.5% of the molecular weight regulator, and 0.1-0.5% of the initiator, and the total mass concentration of all components except water is 20-35%. Thepolymer disclosed by the invention has good water solubility, acid solubility, instant dissolution, temperature resistance, shearing resistance and excellent thickening effect, and can be applied to the fields of acidizing fracturing construction, reinforced oil production operation and the like in oil exploitation at a temperature of 160 DEG C or above.

The invention provides a preparation method of a hydroxylated multi-wall carbon nanotube-polysilane composite material, relates to a preparation method of a multi-wall carbon nanotube-polysilane composite material, and aims to solve the problems that the synthesis steps are complicated, the reaction is difficult to control and the repetitiveness is poor in the existing preparation method of a multi-wall carbon nanotube-polysilane composite material and the prepared multi-wall carbon nanotube-polysilane composite material is low in silicon element content. The method comprises the following steps: 1, purifying to obtain a purified multi-wall carbon nanotube; 2, performing hydroxylation reaction on the purified multi-wall carbon nanotube to obtain a hydroxylated multi-wall carbon nanotube; 3, grafting the hydroxylated multi-wall carbon nanotube with a silane monomer to obtain a silane-multi-wall carbon nanotube; and 4, performing polymerization reaction to obtain the hydroxylated multi-wall carbon nanotube-polysilane composite material. The invention is mainly used for the preparation of the hydroxylated multi-wall carbon nanotube-polysilane composite material.

The invention provides a method for preparing a GIGS solar cell by applying a one-step magnetron sputtering method. According to the invention, soda-lime glass is taken as a substrate, Mo / CIGS / CdS / i-ZnO:Al / Ni:Al target materials are sequentially adopted, and a CIGS solar cell with the film thickness being about 1-2 microns through using direct current sputtering and radio frequency sputtering, wherein the Mo target adopts direct current sputtering, the CIGS / CdS / i-ZnO / ZnO:Al sequentially adopt radio frequency sputtering, and the Ni:Al adopts direct current sputtering. Content control for each element is realized through adjusting various parameters in the sputtering process, and a CIGS solar cell with the conversion efficiency reaching 5.77% at most can be obtained. The magnetron sputteringmethod provided by the invention is different from the traditional quaternary co-evaporation, sputtering and post-selenization method, so that there is no need of using a toxic hydrogen selenide gasto prepare a CIGS absorption layer by applying the post-selenization method, but the absorption layer is directly prepared by adopting the selenium-rich CIGS target material, thereby enabling the production process to be simpler to operate, green, environment-friendly and easy to control. In addition, the commercial production can be enabled to be equivalent to laboratory production in productionefficiency, and the method has wide commercial application prospects.

The invention discloses a cultivation medium for liquid strains of black fungi and a method for preparing the cultivation medium.The cultivation medium and the method have the advantages that the cultivation medium contains few components and is easy to obtain and low in cost, waste liquid of distillers' grains generated in procedures for producing alcohol by the aid of fermentation processes is utilized, to be more specific, the waste liquid of the corn distillers' grains is an important composition portion of the cultivation medium and contains 92-95% of water, remaining 5-8% of dry substances in the waste liquid contain abundant nutrition ingredients such as carbohydrate, proteins, celluloses, pentosan, caramel, fat, abundant vitamins B and auxin, and accordingly, nutrition ingredients necessary for growth of the liquid strains of the black fungi can be provided by the cultivation medium; the method for preparing the cultivation medium is relatively simple and includes controllable, simple and convenient operation steps, the problem of pollution due to the waste liquid drained from an alcohol plant can be solved if the cultivation medium is used for cultivating the liquid strains of the black fungi, and the cost can be reduced to a great extent; mycelia of the black fungi can grow fast and are high in activity and content, a formula for the cultivation medium for the liquid strain is favorable for standard production, and the cultivation medium and the method have obvious economic and social benefits.

The present invention belongs to the technical field of biochemistry and particularly relates to a preparation method and an application of an artificial exosome complex. Raw materials for preparing the complex are linear polyethyleneimines (PEI) and hyaluronic acid (HA). In preparation processes of HA-PEI, the linear polyethyleneimines can be obtained, while most polyethyleneimines are currentlybranched; an HA-PEI preparation scheme can quantitatively prepare the HA-PEI with a specific molecular weight; operation steps are controllable and the artificial exosome complex can be produced on alarge scale; and the HA-PEI can promote absorption of encapsulated active substances by cells in deep skin through ligand activity of the hyaluronic acid and membrane permeability of the linear polyethyleneimines.

The invention discloses a detection device for a micro-fluidic biologic chip and a preparation method of the detection device. The detection device mainly comprises a groove plate, a bottom plate, a groove and a notch, wherein detection points are arranged in the groove. The detection device is easy to prepare and use, and is suitable for large-scale production and application, and the detection result is stable and reliable.

The invention relates to a preparation method and applications of a clay modified electrode. The preparation method comprises following steps: sodium chloride is adopted for sodium modification of purified meerschaum; TiO2 is adopted for modification of meerschaum obtained via sodium modification; cuprous oxide nanometer particle assembling is carried out so as to prepare a cuprous oxide meerschaum composite; the cuprous oxide meerschaum composite is adopted to modify a clay electrode and detect H2O2. The preparation method possesses following advantages: the using amount of the composite material used for modifying the electrode is extremely low; the operation steps are convenient to control; the obtained modified electrode possesses excellent stability and electrochemical performance.

The invention discloses a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith, belongs to the technical field of mesoporous molecular sieve functional materials, and particularly relates to a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith which is large in size, crack-free and optically transparent and provided with pore walls modified by ethylidene. The preparation method is characterized by comprising the following steps of: by using 1,2-bis(triethoxysilane) ethane as a single silicon source, rapidly synthesising the organic-inorganic hybrid transparent mesoporous gel monolith provided with pore walls modified by ethylidene by controlling a component proportioning ratio and the conditions of system gelation in an acidic medium taking a nonionic surfactant as a template. The preparation method of the material is simple, and easy to operate; the product is regular in shape, controllable in size, and good in heat stability and transparency; and modifying groups are uniformly distributed in the pore walls of the transparent mesoporous gel monolith and unable to block pore channels. The preparation method has an important application value in the field of development for novel optical devices.

The invention relates to a preparation method of double-groups modified transparent meso pore silica gel monolith, which belongs to the meso pore molecular sieve functional material technical field. The preparation method is characterized in that components distribution ratio and synthesis condition are controlled, in an acidic medium which takes a non-ionic surface active agent as a template, an inorganic silicon source and two modified silicon sources containing different functional groups are polymerized together to the transparent meso pore silica gel monolith of a pore canal modified by any two of alkyl group, aryl group, alkenyl group, alkylhalide group or sulfydryl group. The gel preparation method is simple, the product shape is regular, the size is controllable, the heat stability and transparency are good, Two modified groups are uniformly distributed in the meso pore silica gel pore canal, the concentration is adjustable, and the modified groups provide micro-area polar environment capable of selecting in a diversified mode for guest molecules, and have important value in development field of a new optical device. The double-groups modified transparent meso pore silica gel monolith obtained by extracting the solvent and removing a template has wide application prospect in the fields of catalysis, adsorption and separation.

The invention discloses a cultivation medium for liquid strains of flammulina velutipes and a method for preparing the cultivation medium.The cultivate medium and the method have the advantages that the cultivation medium contains few components and is easy to obtain and low in cost, waste liquid of distillers' grains generated in procedures for producing alcohol by the aid of fermentation processes is utilized, to be more specific, the waste liquid of the corn distillers' grains is a main composition portion of the cultivation medium and contains 92-95% of water, remaining 5-8% of dry substances in the waste liquid contain abundant nutrition ingredients such as carbohydrate, proteins, celluloses, pentosan, caramel, fat, abundant vitamins B and auxin, and accordingly nutrition ingredients necessary for growth of the liquid strains of the flammulina velutipes can be provided by the cultivation medium; the method for preparing the cultivation medium is relatively simple and includes controllable, simple and convenient operation steps, the problem of pollution due to the waste liquid discharged by an alcohol plant can be solved if the cultivation medium is used for cultivating the liquid strains of the flammulina velutipes, and the cost can be reduced to a great extent; mycelia of the flammulina velutipes can grow fast and are high in activity and content, a formula for the cultivation medium for the liquid strains is favorable for standard production, and the cultivation medium and the method have obvious economic and social benefits.

The invention discloses a technology for direct method production of highly pure zinc oxide. A device used in the technology comprises a reducing furnace, an oxidizing chamber, a smoke channel, a primary powder collector, a settling chamber, a cooling tube dust collector and a bag dust collector. The technology comprises the following steps: zinc ash used as a raw material is reduced in the reducing furnace to form metallic zinc, the metallic zinc is oxidized in the oxidizing chamber to generate zinc oxide, the zinc oxide generated in the initial 5-10 min stage of the reaction is collected bythe primary powder collector to obtain primary powder, the generated zinc oxide undergoes impurity removal through the settling chamber, and highly pure zinc oxide powder with the purity being equal to or more than 99.6% is collected through the cooling tube dust collector and the bag dust collector. The technology has the advantages of simple operating steps and cheap and easily available raw materials, and the obtained highly pure zinc oxide is directly used in the production of tire rubbers, conveyor belt rubbers and high-level ceramics, and has great economic values.

The invention belongs to the technical field of biochemistry, and in particular relates to a preparation method and application of an artificial exosome complex. The preparation raw materials of the complex are linear polyethyleneimine (PEI) and hyaluronic acid (HA). The HA-PEI preparation process of the present invention can obtain linear polyethyleneimine, but most of the polyethyleneimines are branched at present; the HA-PEI preparation scheme can quantitatively prepare HA-PEI with a specific molecular weight; The steps are controllable and large-scale industrial production is possible; HA‑PEI can promote the absorption of the encapsulated active substance by deep skin cells through the ligand activity of hyaluronic acid and the membrane permeability of linear polyethyleneimine.

The invention discloses a treatment method of low concentration waste water with complexing copper. The method comprises the steps that pH of waste water is adjusted to range from 4.0 to 10.0, sodium hydrosulfite (Na2S2O4) with high reducibility is added into the waste water, and after a reaction is conducted, the complexing copper and bivalent copper in the waste water are reduced into elemental copper particles; industrial quicklime (CaO) is added to adjust pH to 9.0 to conduct chemical precipitation, and anionic polyacrylamide (APAM) is added to conduct enhanced flocculation; quiescent settling is conducted on obtained waste water, and biochemical treatment can be further conducted on effluent. Compared with the prior art, the treatment method of the low concentration waste water with the complexing copper has the advantages that free copper and complexing copper in a water body can be treated, complex breaking effect is good, the effluent can reach the national discharge standard steadily, secondary pollution does not exist, reagent dosage is less, the treatment cost is low, alumen ustum is big and prone to settlement and separation, operation steps in the process are easy to control, and the treatment method of the low concentration waste water with the complexing copper is prone to be combined with existing techniques.

The invention discloses a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith, belongs to the technical field of mesoporous molecular sieve functional materials, and particularly relates to a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith which is large in size, crack-free and optically transparent and provided with pore walls modified by ethylidene. The preparation method is characterized by comprising the following steps of: by using 1,2-bis(triethoxysilane) ethane as a single silicon source, rapidly synthesising the organic-inorganic hybrid transparent mesoporous gel monolith provided with pore walls modified by ethylidene by controlling a component proportioning ratio and the conditions of system gelation in an acidic medium taking a nonionic surfactant as a template. The preparation method of the material is simple, and easy to operate; the product is regular in shape, controllable in size, and good in heat stability and transparency; and modifying groups are uniformly distributed in the pore walls of the transparent mesoporous gel monolith and unable to block pore channels. The preparation method has an important application value in the field of development for novel optical devices.

The invention discloses a liver-protecting traditional Chinese medicine compound prescription. The liver-protecting traditional Chinese medicine compound prescription consists of the following ingredients in parts by weight: 10-30 parts of flowers of Chinese globeflower, 15-25 parts of milk thistle, 10-20 parts of melicope patulinervia with stalks, 10-20 parts of lathyrus palustris, and 5-15 partsof liquorice roots. The invention further discloses a preparation method of the liver-protecting traditional Chinese medicine compound. The preparation method of the liver-protecting traditional Chinese medicine compound comprises the following steps: S01, preparing alcohol-extracted dry powder; S02, preparing water-extracted dry powder; and S03, uniformly mixing the alcohol-extracted dry powderwith the water-extracted dry powder so as to obtain a final product. The liver-protecting traditional Chinese medicine compound prescription disclosed by the invention has the effects of treating liver fibrosis, acute and chronic hepatitis as well as hepatic adipose infiltration, and preventing liver cancer; moreover, the preparation method of the liver-protecting traditional Chinese medicine compound prescription is controllable in operation steps, small in inter-batch differences, and suitable for industrial production. In addition, high purity medicinal parts can be obtained with high content of effective crude drug components achieved; moreover, the effects of reducing toxicity and enhancing efficacy can also be achieved.

The invention relates to a preparation method and applications of a clay modified electrode. The preparation method comprises following steps: sodium chloride is adopted for sodium modification of purified meerschaum; TiO2 is adopted for modification of meerschaum obtained via sodium modification; cuprous oxide nanometer particle assembling is carried out so as to prepare a cuprous oxide meerschaum composite; the cuprous oxide meerschaum composite is adopted to modify a clay electrode and detect H2O2. The preparation method possesses following advantages: the using amount of the composite material used for modifying the electrode is extremely low; the operation steps are convenient to control; the obtained modified electrode possesses excellent stability and electrochemical performance.

The invention discloses a microfluidic biological chip detection device and a preparation method. The detection device is mainly composed of a groove plate, a bottom plate, a groove and a notch, and detection points are arranged in the groove. The detection device is simple to prepare and use, is suitable for large-scale production and application, and has stable and reliable detection results.

The invention belongs to the field of aerogel material preparation technologies, and relates to a method for preparing a hydrophobic SiO2 aerogel by virtue of normal pressure drying. During the preparation, a two-step method is adopted, an organic silicon source as precursor, water as a hydrolysis agent, absolute ethyl alcohol as a solvent, acid and alkali as catalysts, and an organic silicon solution and a surface modifier. The preparation method comprises the following steps: mixing and stirring the organic silicon source, the water and the absolute ethyl alcohol in proportion, and respectively adding an acid catalyst and an alkaline catalyst by virtue of an acid and alkali two-step method to regulate pH value so as to form gel; performing solvent replacement on the aged gel, carrying out surface hydrophobic modification, replacing a hydrophilic group on the surface of the gel through a hydrophobic group, so that the gel is hydrophobic; finally, performing normal pressure drying to obtain the hydrophobic SiO2 aerogel. The method disclosed by the invention can be used for reducing the preparation cost of the aerogel; moreover, according to a hydrophobicity test, the contact angle can reach about 158 degrees, thereby showing that the hydrophobicity is good.

The invention provides a preparation method of transparent mesoporous gel monolith with dual-functional-modified hole walls. The method is characterized by using ethylidene bridge-bond-type organosilicon ester as a single silicon source, and using mild acidity hydrolyzed by cheap inorganic aluminum salt to induce hydrolysis of the silicon source, without introducing dangerous and corrosive inorganic acid as a hydrolysis catalyst of the silicon source. By adjusting a composition ratio and a gelling way of a system, the transparent mesoporous gel monolith with the hole walls simultaneously modified by the ethylidene and Al atom and with a mole ratio of Si and Al being adjusted in a range of 6-80 can be rapidly prepared. The method is concise, high-efficient and environmental-friendly, the product is regular in shape, adjustable in size and good in transparency, and has important application value in a field of development of novel optical devices. The mesoporous gel monolith with the dual-functional-modified hole walls obtained by removing a template through solvent extraction has a wide application prospect in fields of catalysis, adsorption, separation, etc.

The invention discloses an infrared optical product composite anti-reflection film and a preparation method thereof, and belongs to the technical field of film plating. According to the preparation method of the infrared optical product composite anti-reflection film, alternating deposit plating of DLC films and GeC films is conducted on a zinc selenide or zinc sulfide substrate through an ECR-MPCVD method; and the operation steps are simple and controllable, and the product cannot be subjected to cross contamination. The product is uniform and compact, and the requirement of an infrared optical film for permeability improvement and thickness can be met. The invention further discloses the infrared optical product composite anti-reflection film prepared by using the reparation method of the infrared optical product composite anti-reflection film. The product has an excellent refractive index, the thickness of the product is consistent with the actually required the thickness, and it can be achieved that the permeability of the film with the thickness of 8-12 micrometers is improved.

The invention relates to a method for preparing spectrally pure magnesium oxide. The preparation method comprises the following steps of: reacting metal magnesium powder with nitric acid, namely putting the magnesium powder into a small white porcelain pot, dripping high-purity diluted nitric acid into the pot, then adding H2O2 into the pot, and filtering the mixture to obtain filtrate A so as toobtain magnesium nitrate; and preparing saturated solution from high-purity oxalic acid, slowly adding the oxalic acid solution into the filtrate A to generate a large amount of white sediment, and heating and cooling the sediment to separate out the spectrally pure magnesium oxide. According to the preparation method, the metal magnesium powder is reacted with the nitric acid to prepare the magnesium nitrate, the prepared magnesium nitrate is reacted with the high-strength oxalic acid to generate magnesium oxalate, and the magnesium oxalate is dried at a high temperature to form the spectrally pure magnesium oxide. The preparation method has the advantages of simple processes, easy control of operation steps, advanced technology and high production efficiency; and the prepared spectrallypure magnesium oxide product has high purity and low impurity content, and the prepared magnesium oxide meets the requirement of high-end technology of the electronic industry.

The invention provides a preparation method of a hydroxylated multi-wall carbon nanotube-polysilane composite material, relates to a preparation method of a multi-wall carbon nanotube-polysilane composite material, and aims to solve the problems that the synthesis steps are complicated, the reaction is difficult to control and the repetitiveness is poor in the existing preparation method of a multi-wall carbon nanotube-polysilane composite material and the prepared multi-wall carbon nanotube-polysilane composite material is low in silicon element content. The method comprises the following steps: 1, purifying to obtain a purified multi-wall carbon nanotube; 2, performing hydroxylation reaction on the purified multi-wall carbon nanotube to obtain a hydroxylated multi-wall carbon nanotube; 3, grafting the hydroxylated multi-wall carbon nanotube with a silane monomer to obtain a silane-multi-wall carbon nanotube; and 4, performing polymerization reaction to obtain the hydroxylated multi-wall carbon nanotube-polysilane composite material. The invention is mainly used for the preparation of the hydroxylated multi-wall carbon nanotube-polysilane composite material.

The invention relates to a method of preparing high-dispersion nano calcium carbonate by using paramecia and belongs to the technical field of preparation of calcium carbonate. According to the method, original liquid with rich paramecia is collected first from a paddy field, paramecia are purified and cultured with wheat-prepared culture solution to obtain a coating liquid, zinc sulfate and serine with rich amino acid are added as a composite dispersion protectant, composite mother liquid is prepared, the coating liquid is added while carbon dioxide is introduced for charring, the surface of calcium carbonate that precipitates is covered with the paramecia to avoid mutual aggregation and clustering of calcium carbon particles, and the uniformly dispersed nano calcium carbonate is obtained; the nano calcium carbonate has excellent application prospect.