126results about How to "Suitable for large-scale mass production" patented technology

The invention discloses a super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane, and a preparation method and an application thereof. According to the method, fabric mesh with a specification of 100-300 meshes is subjected to ultrasonic cleaning, and is air-dried under normal temperature; a hydrophilic polymer water-sensitive agent and a cross-linking agent are dissolved in water according to a ratio of 1:9-9:1; the mixture is well mixed by magnetic stirring, such that a solution with a concentration of 1-99% is prepared; nano-sol is prepared with a sol-gel method; the solution and the nano-sol are prepared into a mixed solution with a concentration of 1-99%, and the solution is well dispersed through ultrasonic dispersion; the mesh is soaked in the mixed solution and is vertically lifted, or the mesh is directly sprayed by using a high-pressure spraying gun; and the mesh is bake-dried, such that the super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane is obtained. Contact angles of the super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane with water and oil in air are both 0 DEG, and the membrane is super-hydrophilic. Under water, the contact angle of the membrane with oil drops is larger than 150 DEG, and the membrane has an oil drop low adhesion characteristic. The mesh membrane provided by the invention can be used in oil-water mixture separation and oil-containing sewage processing.

The invention discloses an oxidized graphene-modified super-hydrophilic super-oleophobic oil-water separation film and a preparation method and application thereof. The method comprises the following steps: mixing a hydrophilic polymer water-sensitive agent and a cross-linking film-forming agent according to a ratio of 1:9-9:1, dissolving the mixture and nano-silica sol in water according to a mass ratio of 1:9-9:1, magnetically stirring uniformly to prepare a 1-99% solution, adding 0.5-1 percent of oxidized graphen as an inorganic cross-linking agent, and ultrasonically and uniformly dispersing; ultrasonically cleaning a fabric silk screen with the particle size of 100-300 meshes, drying at normal temperature, forming a film on the silk screen in a spraying, dip-coating or spinning manner, drying and cross-linking, thus obtaining the hydrophilic and underwater super-oleophobic oil-water separation film. The oil-water separation film has excellent swelling resistance and mechanical property after graphene cross-linking modification, has a contact angle of 0 degree with both water and oil in air and has high super-hydrophilic property; the film has a contact angle of 150 degrees with oil drops under the water and has the low-adhesion characteristic to oil drops. The film can be applied to separation of oil-water mixtures and treatment of oil-containing sewage.

The invention discloses a hydrophilic oleophobic polymer and preparation method thereof, and application thereof in humidity response oil and water separating membrane. The preparation of the hydrophilic oleophobic polymer comprises the following steps: carrying out an esterification reaction of polyvinyl alcohol and perfluorocarboxylic acid or firstly carrying out a carboxylation of polyvinyl alcohol and then a neutralization reaction of the intermediate product and perfluorotertiary amine. When the product is used, a fabric silk screen is cleaned with ultrasonic sound; 10-50 parts of hydrophilic oleophobic polymer, 50-500 parts of nanometer sol, 1-5 parts of cross-linking agents and 1-5 parts of catalysts are dispersed uniformly; the mixed liquor is dip-coated or spray-coated on the surface of the membrane, and after drying and crosslinking, the humidity response super-hydrophilic and super-oleophobic oil and water separating net membrane. According to the invention, hydrophilic groups are distributed surrounding the hydrophobic chain segment on the surface of the net membrane with humidity responsiveness, and contact angle in the air of the product to water is reduced to 0 degree from more than 90 degrees, and the contact angle in air and water of the product to oil is above 150 degrees, so the product has a low adherence characteristic of droplet. The net membrane is used for separating oil and water mixture and processing oil-containing sewage.

The invention discloses a super-hydrophilic and underwater super-oleophobic oil-water separation mesh film and a preparation method thereof. The method comprises the following steps: ultrasonically cleaning a fabric silk screen and airing at normal temperature; preparing polymer emulsion particle microspheres of which the particle size distribution is 100-500nm and the surface is rich in carboxyl salt by adopting an emulsion polymerization, and preparing nano-silica sol by adopting a sol-gel method; preparing hydrophilic emulsion particles and the nano sol into a mixed solution and performing uniformly ultrasonic dispersion; immersing the silk screen into the mixed solution, vertically lifting up, or directly spraying by adopting a high-pressure spray gun, and drying to obtain the super-hydrophilic and underwater super-oleophobic oil-water separation mesh film. The surface of the oil-water separation mesh film has a spherical rough micro-nano binary structure, contact angles with water and oil in air are 0 degree, and the oil-water separation mesh film has the super hydrophilicity. A contact angle with oil drops under water is larger than 150 degrees, and the oil-water separation mesh film has low adhesion properties on the oil drops. The mesh film can be applied to separating oil water mixtures and treating oily sewage.

The invention discloses a UV cured super-hydrophilic and underwater super-oleophobic oil-water separation membrane, its preparation method and an application thereof. The preparation method comprises the following steps: carrying out ultrasonic cleaning on a fabric silk screen; preparing nano sol by a sol-gel method, mixing 10-50 parts of a single-function UV cured oligomer, 60-80 parts of a bi-functional UV cured oligomer, 10-20 parts of multifunctional UV cured oligomer, 200-500 parts of silica sol, 1-5 parts of a waterborne photoinitiator and 1-5 parts of an emulsifier, and uniformly dispersing; coating a mixed liquor on the surface of a membrane by a dip-coating or spray process, drying, and carrying out UV curing to obtain a product. The surface of the oil-water separation membrane has a hydrophilic polymer molecular brush structure based on the micro-nano dual structure. The contact angle of the membrane to water and oil is 0 degree in the air, and the membrane has super-hydrophilicity. The contact angle of the membrane to oil drops is greater than 150 degrees underwater, and the membrane has low adherence to oil drops. The membrane provided by the invention can be used in separation of an oil-water mixture and treatment of oily sewage.

The invention relates to a liquid injection type super smooth surface and a laser precision micro-fabrication method thereof, and belongs to the technical field of functional materials. The liquid injection type super smooth surface takes a metal as a substrate; firstly, a micro-nano composite structure is prepared on the metal surface by means of laser etching; after that, a super-hydrophobic surface is obtained by baking, and then injected liquid covers the super-hydrophobic surface to obtain the liquid injection type super smooth surface. Test droplets include water droplets, acid solutions, alkali solutions, lake water, sea water, serum, glycerin and ketchup. The liquid injection type super smooth surface provided by the invention has very small frictional resistance, and can very easily slide off the surface and reduce the retention time and probability of the water droplets and other test liquid on the surface. The laser precision micro-fabrication method of the liquid injection type super smooth surface provided by the invention adopts the laser precision machining technology to prepare the micro-nano composite structure on the metal surface, the technological process is simple and easy to operate, no other chemical additives are needed, and there is no toxic side effect and pollution, so that the laser precision micro-fabrication method is suitable for large-scale and mass production.

The invention relates to a method for extracting paclitaxel from taxus chinensis branches and leaves, and the method comprises the following steps of: (1) soaking 1000 kg of pulverized taxus chinensis branches and leaves by using 5 m<3> of methanol, and filtering; (2) decoloring filter liquor; (3) decompressing and concentrating a decolored solution, and extracting; (4) degreasing and dewaxing extract liquor, crystallizing, depositing, filtering, and drying to obtain a primary product; (5) removing impurities contained in the primary product in a silicagel column, carrying out gradient elution, collecting paclitaxel-containing elution flows, and decompressing and concentrating to obtain a crude product; (6) stirring the crude product into silica gel, packing, carrying out gradient elution, collecting the paclitaxel-containing elution flows, and decompressing and concentrating to obtain a semi-finished product; (7) dissolving the semi-finished product, adding petroleum ether, standing, filtering, and drying to obtain a semi-finished product with the content more than or equal to 30%; (8) removing the impurities contained in the semi-finished product obtained from the step (7) in a silicagel column, carrying out gradient elution, collecting the paclitaxel-containing elution flows, and decompressing and concentrating to obtain a semi-finished product with the content more than or equal to 95%; and (9) dissolving the semi-finished product obtained from the step (8), filtering, adding normal hexane, standing, carrying out suction filtration; and drying to obtain a finished product with the content more than or equal to 99%.

The invention relates to a water-based epoxy emulsion type carbon fiber sizing agent and a preparation method thereof. The water-based epoxy emulsion type carbon fiber sizing agent comprises the following components in percentage by weight: 15%-35% of epoxide resin, 5%-20% of surface active agent, 0.1%-0.5% of lubricating agent, 0.1%-0.5% defoaming agent and 55%-65% of deionized water. According to the water-based epoxy emulsion type carbon fiber sizing agent and the preparation method thereof, no volatile organic compound is added, so that the harm to production equipment and operators in preparation and application processes of the sizing agent is greatly reduced, and the environment protection is facilitated. The water-based epoxy emulsion type carbon fiber sizing agent and the preparation method thereof which are disclosed by the invention have the advantages of simple emulsifying process, safety in operation, low requirement on the production equipment, easiness for raw material obtaining, low price and suitability for large-scale production.

The invention belongs to the technical field of preparation of oil-water separation membranes and discloses a super-hydrophilic and underwater super-oleophobic oil-water separation membrane with chemical resistance as well as a preparation method and an application of the oil-water separation membrane. The oil-water separation membrane is prepared with a method comprising steps as follows: nano-sol is prepared and mixed with mono-functional UV (ultraviolet)-curable oligomer, a dual-functional UV-curable oligomer and a poly-functional UV-curable oligomer, and a UV-curable water-based coating is obtained; a screen mesh is coated with the UV-curable water-based anticorrosive coating with a dip coating method or a spray coating method, UV curing is performed after drying, and an anticorrosive base-coated mesh membrane is obtained; the anticorrosive base-coated mesh membrane is coated with the UV-curable water-based coating with the dip coating method or the spray coating method, drying and UV curing are performed, and the super-hydrophilic and underwater super-oleophobic oil-water separation membrane with chemical resistance is obtained. The oil-water separation membrane has contact angles of zero with water and oil in air, has a contact angle larger than 150 degrees with oil drops underwater, and can be applied to separation of an oil-water mixture and treatment of oily sewage.

The invention discloses dimethyl-4-benzocyclobutene silicon-based vinyl-grafted modified hydrogen-containing silicone oil shown as a formula (IV) and a preparation method thereof. The preparation method of benzocyclobutene silicone oil resin comprises the following steps of: putting solvent-toluene-diluted hydrogen-containing silicone oil and 4-(1,1-dimethyl-1-vinyl) silicon benzocyclobutene intoa reactor, adding a platinum catalyst after being protected by N2, and stirring and carrying out reaction for 20-40 hours at the reaction temperature of 60-90 DEG C; and adding triphenylphosphine, heating to reflux for 3 hours, cooling, filtering, adding methanol and mixing after a filtrate is concentrated, carrying out precipitation, filtering, carrying out repeated precipitation on solids for 1-2 times by using methanol, and then, drying to obtain a product. The product, i.e. benzocyclobutene silicone oil resin, has excellent thermal properties, mechanical properties, electrical properties and film forming properties and has wide development and application prospects in fields, such as microelectronics industry, aerospace and national defense and the like.

The invention discloses a barbecue chilli powder seasoning and a making method thereof. In the aspects of formula and content, the barbecue chilli powder seasoning is prepared by taking chilli as a main material and garlic powder, pepper, anise, peanut, dried ginger, cardamun, black pepper and other various spices as auxiliary materials through the steps of stir-frying, low-temperature crushing, blending, stirring for uniformity, sterilizing, inspecting, packaging and sealing. The barbecue chilli powder seasoning has aromatic odor and warm nature and integrates essences of various spices, and a process is simple and is easy to master.

The invention provides an internal layout structure of a switched reluctance machine controller of an electric vehicle. The internal layout structure comprises a high-voltage part, a low-voltage part and a radiator base (13). The high-voltage part comprises an IGBT module (1), a thin-film capacitor (2), a high-voltage copper bar and a pre-charge contactor (3). The high-voltage copper bar comprises a copper bar positive electrode (4), a copper bar U positive electrode (5), a copper bar U negative electrode (6), a copper bar V positive electrode (7), a copper bar V negative electrode (8), a copper bar W positive electrode (9), a copper bar W negative electrode (10) and a copper bar negative electrode (11). The low-voltage part comprises a low-voltage main control board (12) and a low-voltage connector (17). The low-voltage connector (17) is connected with the low-voltage main control board (12), the high-voltage part is arranged on the radiator base (13), and the low-voltage part is arranged above the high-voltage part. The hierarchical design of the high-voltage part and the low-voltage part is adopted in the longitudinal direction, and the internal layout structure is simple, compact in layout structure, high in system reliability and suitable for large-scale batch production.

The invention relates to a novel low-resistance injector. The novel low-resistance injector comprises a syringe, a push rod and a rubber plug, wherein the push rod consists of a main body and a mounting head which is used for mounting the rubber plug; a cavity for accommodating the mounting head is reserved in the rubber plug; the cavity of the rubber plug has a big middle part and two small ends along the axial direction of the push rod; the diameters of the upper and lower heads of the mounting head are a little bigger than those of the two heads of the cavity; after the rubber plug is arranged on the push rod, space is reserved between the mounting head and the rubber plug in the axial direction, so that the rubber plug can slide backwards and forwards relative to the push rod along the axial direction of the push rod; the top part of the rubber top slightly arches upwards to form a hogback; two sealing rings are integrally formed on the outer circumference of the rubber plug; and the section of each sealing ring has a triangular shape, so that the four corners on the outside of the longitudinal section of the rubber plug have angular shapes. The injector adopts the structure and the frictional resistance is reduced to 0.05 Newton, so that the aims of low resistance and high sealing property are fulfilled. The practice shows that the low-resistance injector products have the advantages of simple production process, reject ratio lower than 1/10,000 and suitability for large-scale batch production.

The present invention relates to food producing process, and is especially the production process of crisp fish. The crisp fish product is produced with fresh fish and through the steps of pre-treatment, steaming at 97-100 deg.c for 1-8 hr, cooling, sterilizing and packing. The crisp fish has its bone eatable, intact appearance, beautiful color, and nutritious components well maintained, and the production process has short period and high efficiency and is suitable for large scale production.

The invention provides high-damage-threshold fluoride phosphate laser glass as a material for preparing an ultraviolet-transmittance window, and a preparation method of the high-damage-threshold fluoride phosphate laser glass. The preparation method comprises the steps of adopting an alkali metal oxide, an alkaline earth metal oxide, alumina, zinc oxide and phosphoric pentoxide as main raw materials, adding a small amount of rare earth fluoride, molding and preparing glass pressing blanks based on the drip injection method after the treatments of high-temperature melting, clarification and homogenizing, and finally obtaining the high-damage-threshold fluoride phosphate laser glass material through the annealing treatment. The fused quartz material can be replaced by the above glass material for preparing lenses, plane windows, prisms and other optical components applied to high-energy and high-power laser systems. In this way, the laser-induced damage problems of ultraviolet optical components made of the fused quartz material in existing high-energy and high-power laser systems can be solved. The load output capability of a laser is further improved. Therefore, the above material can be used for preparing the ultraviolet-transmittance optical components of high-power lasers for laser-driven inertial confinement fusion experiments.

The invention provides a method for treating waste hard alloy. The method comprises the following steps of: oxidizing the waste hard alloy to convert tungsten into tungsten oxide; and reacting the oxidized waste hard alloy with alkali to convert the tungsten oxide into tungstate. By the method, the waste hard alloy can be effectively treated.

The invention discloses an ultrasonic impact surface modification auxiliary titanium alloy diffusion connection method. According to the method, ultrasonic impact is conducted on the surface of a titanium alloy plate, the titanium alloy plate is heated and diffused, so that joints can be tightly combined, and the high-strength connection of a titanium alloy is realized. According to the method, agrain refinement layer is obtained through ultrasonic impact surface modification, the atomic diffusion rate is increased, diffusion connection parameters of the titanium alloy are reduced, and low-temperature diffusion connection of the titanium alloy is realized; and the method is simple and convenient to operate, good in adaptability, high in repeatability, green and energy-saving, and can greatly improve the industrial production efficiency.

The invention relates to a bilayer structure TC4-base titanium alloy self-lubricating material. TC4 titanium alloy is used as a base material, graphene is used as a lubrication phase and a reinforcement phase, and the processes of vibration material mixing, high-temperature melting, vacuum gas atomization and laser melting deposition are sequentially executed to prepare the TC4-base titanium alloyself-lubricating material with the top layer and the bottom layer including different adding amounts of the graphene. According to the self-lubricating material, the graphene is arranged into a TC4 titanium alloy matrix by means of graded distribution in-situ composite, and the friction coefficient and attrition rate of the obtained self-lubricating material in the frictional wearing process arelow. Compared with a self-lubricating material with the lubrication phase and the reinforcement phase being evenly distributed, the properties of antifriction and wearing resistance can be better achieved more rapidly, and the precious lubrication phase and reinforcement phase graphene can be reduced. Moreover, the technological parameters can be controlled easily in the preparation process, and it is of great significance to improving the tribological property of the self-lubricating material and industrialized application of the self-lubricating material.