697results about How to "Low requirements for production equipment" patented technology

The invention discloses wood lacquer for purifying formaldehyde and a preparation method thereof. The wood lacquer is prepared by mixing a component A with a component B in a mass ratio of (1:0.25)-(1:0.5), and then stirring the mixture uniformly, wherein the component A is prepared by putting alkyd resin and alcohol solvents into a reaction kettle under the protection of nitrogen, stirring the materials uniformly and heating the materials to 50-75 DEG C, adding first diluents, fillers, driers, wax powder, formaldehyde removal agents and an anti-settling agent in sequence, continuing stirring, maintaining the temperature at 40-70 DEG C and reacting for 15-60 minutes, and discharging the material after returning to the room temperature; the component B is prepared by putting second diluents into the reaction kettle under the protection of nitrogen, stirring and insulating the materials, putting curing agents, a levelling agent and a defoaming agent into the reaction kettle, insulating and stirring the materials, and discharging the material after returning to the room temperature. The wood lacquer has high formaldehyde removal efficiency and good durability, dispenses with recoating films, and is convenient to use.

The invention relates to a preparation method of a graphene coating polyacrylonitrile fiber composite material. The preparation method comprises the following steps of: (1) processing polyacrylonitrile by using alkali; (2) preparing a polyacrylonitrile fiber with modified single layer KH550; (3) preparing a polyacrylonitrile fiber with modified single layer graphite oxide; (4) using the polyacrylonitrile fiber with the modified single layer graphite oxide as a raw material, repeating the step (2) and the step (3), and obtaining the polyacrylonitrile fiber with modified multiplayer graphite oxide; and (5) placing the polyacrylonitrile fiber with the modified multiplayer graphite oxide in a graphite oxide dispersion liquid, then dropwise adding a hydrazine hydrate aqueous solution, carrying out heating reaction, finally cooling, washing and drying to obtain the graphene coating polyacrylonitrile fiber composite material. The preparation method provided by the invention is simple; the graphite of the composite material provided by the invention is good in reduction degree and uniformly coats the surface of the polyacrylonitrile; and compared with a commercial finished product, the composite material has the advantages that the resistivity of a single wire is reduced by six order of magnitudes, and the composite material has the application prospect of conductive fiber preparation.

The invention discloses a biological preparation method for natural safe starch nano particles. The natural safe starch nano particles are prepared by gelatinization and recrystallization by using natural starch as a raw material, and the method belongs to the technical field of nano structure materials. The method comprises the following steps of: mixing the natural starch with water in a certain proportion to form starch milk; and performing gelatinization, debranching, low-speed centrifugation, recrystallization, differential speed centrifugation and vacuum freezing and drying to prepare the nanoscale starch crystalline. Toxic and harmful organic solvents and inorganic metal ions are not added during the preparation of the starch nano particles, and the starch nano particles are wide in sources of raw materials, biodegradable, good in biocompatibility, low in cost, and simple in production process, and industrial scale production of starch nano particles can be realized easily. The method has a special function in the fields of biological membrane preparation, medicine carriers, high-molecular polymer and the like.

The invention relates to a granular saline-alkali soil conditioner. The conditioner is prepared from the following raw materials in parts by weight: 70-90 parts of phosphogypsum, 5-15 parts of humic acid and 5-15 parts of filler. The invention also relates to a production method of the saline-alkali soil conditioner. The production method comprises the following steps: preparing the filler, preparing a spray, palletizing, baking, sieving and the like. The granular saline-alkali soil conditioner disclosed by the invention plays a good saline-alkali soil improvement role by combined action of adjusting a plurality of aspects such as the soil pH level and ion components, enhancing the salt resistance ability of crops, activating nutrient elements in soil and the like. The product disclosed by the invention is granular, convenient to use, and convenient for mechanical fertilization. The production method of the product disclosed by the invention has the characteristics that production equipment is low in demands, and just conventional equipment needs to be adopted, special equipment does not need to be added, and the method is wide in raw material source, low in production cost, convenient to transport and fertilize, and the like.

The invention discloses an asphalt regenerator for improving the high temperature stability for mixing material of waste asphalt. According to the parts by weight, the components are as below: 70 to 95 of refinery waste rich in aromatic fraction and colloid; 5 to 25 of resin; 0.1 to 1 of antioxidant; 0.1 to 1 of anti-ultraviolet addition agent; 2 to 5 of stabilizing agent for high temperature. The invention also discloses the preparation method for the asphalt regenerator. Aiming at aged asphalt property in waste asphalt mixing material, the invention adds the resin, the antioxidant and the anti-ultraviolet addition agent in refinery waste rich in aromatic fraction and colloid and makes rational selection and matching for material of each material. The invention has the advantages of easy availability for raw material, low requirement for equipments, simple preparing art and convenient use. The invention obviously improves stability of high temperature for regenerated asphalt mixing material and other active results, lowers construction cost and is suitable for green ecological and sustainable development.

The invention provides a preparation method of a magnetic-functionalized graphene composite material, and relates to preparation of a graphene composite material. According to the invention, the preparation method is simple, the raw material is easily obtained, and the industrial production is easy; the prepared magnetic-functionalized graphene composite material has superparamagnetic property and is higher in saturated magnetization; and the graphene carrier is good in conductivity, and loaded ferroferric oxide nano particles are uniformly distributed, are small and are good in crystallizability. The preparation method comprises the following steps of: matching ethanediamine and water into a mixed solvent, then ultrasonically dispersing graphite oxide and iron acetylacetonate in the mixed solvent, and obtaining ethanediamine/dispersion of the graphite oxide and the iron acetylacetonate; transferring the ethanediamine/dispersion of the graphite oxide and the iron acetylacetonate into a reactor lined with polytetrafluoroethylene for reaction and obtaining solid products; and cleaning the solid products, collecting the products with a magnet, drying and obtaining the magnetic-functionalized graphene composite material.

The invention discloses a method for preparing nanoscale sheet cerium oxide by a hydrothermal method. The method comprises the following steps of: 1) preparing a 0.01-0.05mol/L Ce<3+> ion aqueous liquor at room temperature; preparing an ammonia water liquor at room temperature, wherein pH value of the ammonia water liquor is greater than 11; 2) placing the ammonia water liquor in a reaction kettle in a temperature range from -10 DEG C to 20 DEG C, taking the Ce<3+> ion aqueous liquor, and slowly dropping to excessive ammonia water liquor while stirring; and 3) stirring the mixed liquor obtained in the step (2) at constant temperature for reacting for 2-24 hours, centrifugalizing after reaction, removing the supernatant liquid, washing the powder obtained by centrifugalization and drying to obtain the solid sheet cerium oxide. According to the method disclosed by the invention, the nanoscale sheet cerium oxide is synthesized by one step by the hydrothermal method. The method is simple in preparation process, and low in demand on production and process conditions. No template materials are required and no organic solvents are added. The method is basically free from pollution and very environmental-friendly.

The invention discloses a method for preparing conducting polymer micro-nanofibers in a magnetic spinning mode. The method comprises the steps that 1, a magnetic spinning device is built, wherein the magnetic spinning device comprises a rotary collection disc with a permanent magnet; 2, a spinning precursor solution is prepared, wherein magnetic nano particles, high-molecular polymer and conducting polymer are mixed and dissolved in an organic solvent solution; 3, the magnetic spinning device is utilized for preparing conducting polymer micro-nano complex fibers, wherein the spinning precursor solution is injected into a feeding device, the feeding device is started, liquid drops on an opening of a spinning nozzle forms a jet flow under the effect of magnetic field force to be connected with the permanent magnet to be a bridge, a brushless direct-current motor is started to drive the collection disc to rotate, the ferrofluid jet flow is continuously pulled out under the effect of magnetic field force, and conducting polymer micro-nanofibers are wound and formed among vertical supporting columns of the collection disc. The method does not need the high voltage effect, reduces the production cost and potential safety hazards, is suitable for large-scale production and has the good application prospect, and the fibers are distributed in order.

The invention discloses a method for effectively extracting anthocyanidin and anthocyanin, and the method comprises the following steps: (1) extracting fresh anthocyanidin and anthocyanin raw materials, performing rapid stirring and extracting with 70-90% ethanol solution for 2-3 times, mixing and filtering obtained an extraction solution, performing vacuum concentration of the extraction solution to alcohol-free state, and obtaining the a concentrate; (2) centrifuging the concentrate obtained from the step (1), preserving a supernatant, refining the supernatant with CAD-40 macroporous adsorption resin, performing cleaning with purified water, performing washing out with 65-75% ethanol and collecting the eluate; (3) performing vacuum concentration of the eluate to the non-alcohol state so as to obtain a concentrate, and carrying out spray drying of the concentrate and obtaining the extract product containing anthocyanidin and anthocyanin. According to the invention, the method for effectively extracting anthocyanidin and anthocyanin is provided, and the method has the advantages of simple production equipment, short production period and low cost, and substantially increased purities of the effective components in the extract product.

The invention discloses a preparing method of bicyclohexane monomer LCD in the monomer LCD preparing technical domain, which utilizes Grignard reaction to prepare the product with structural formula as graph I and synthetic feature route as graph II, wherein R1 and R2 is C2-C10; R3 is C1-C9 straight-chain alkyl; X is Cl or Br or I; A is C2H4 or cyclohexane; n is 0 or 1.

The invention provides a polystyrene/calcium alginate composite gel microsphere in a nuclear shell structure and a preparation method thereof, relating to biopolymer materials. The polystyrene/calcium alginate composite gel microsphere in the nuclear shell structure takes a polystyrene microsphere as a core and calcium alginate gel as a shell, wherein the grain size of the core is 1-100 microns, and the thickness of the shell layer is 50-800 nm. The preparation method comprises the following steps of: mixing polystyrene microsphere with aqueous solution containing a surface active agent I, and carrying out ultrasonic emulsification to obtain mixed solution A; adding sodium alga acid solution in the mixed solution A, and stirring to obtain mixed solution B; adding organic solution containing a surface active agent II into the mixed solution B, and stirring to obtain mixed solution C; adding calcium chloride solution which has the same volume with the sodium alga acid solution into the mixed solution C under stirring to react, and carrying out vacuum filtration, washing the solution until no calcium ion residue exists on the surface and drying to obtain a product D; and dispersing the product D into water, centrifuging the mixture, pouring out supernate and taking out precipitate to obtain the product.

The invention relates to a preparation method of water-dispersible graphene/ferroferric oxide (Fe3O4) composite powder. The method comprises the following steps of: (1) ultrasonically dispersing graphite oxide and sodium polystyrene sulfonate into water at room temperature to form reaction liquid, raising a temperature to 90 to 110 DEG C, and reacting for 8 to 16 hours; (2) adding ferric salt and ferrous salt into the reaction liquid under the protection of nitrogen atmosphere at room temperature, adding ammonia water, reducing the temperature to 70 to 90 DEG C, reacting for 20 to 40 minutes, and then adding an oleic acid for continuous reaction; and (3) cooling to room temperature, collecting the graphene/Fe3O4 composite powder by using a magnet, washing and drying to obtain the finished product. The method is simple and easy for industrial production; Fe3O4 in the prepared composite powder has pure crystalline phase; the Fe3O4 is well combined with the graphene; the Fe3O4 has good dispersibility on a surface of the graphene and in a layer of the graphene; the composite powder is low in resistivity, high in magnetic intensity and good in underwater dispersibility and has a good application prospect.

The invention discloses a novel wood-plastic composite material, which is prepared from a wood meal raw material, waste fiber textiles, solid wastes and thermoplastics by the processes of crushing, blending, granulation, extrusion molding and the like. According to the novel wood-plastic composite material, waste mushroom stems, the waste fiber textiles, the solid wastes and the like can be comprehensively utilized, and the wood-plastic composite material prepared from the waste mushroom stems, the waste fiber textiles and the solid wastes is low in cost and high in mechanical performance and service performance, and has the characteristics of low cost and strong strength; in addition, a production method is easy to operate, has lower requirements on a process condition and production equipment, and has broad market application prospect, and large-scale production can be implemented.

The invention discloses a polyethylene/wood powder composite wire for fused deposition modeling, and a preparation method thereof. Raw materials and assistants used by the polyethylene/wood powder composite wire for fused deposition modeling comprise 70-90 parts of polyethylene, 10-30 parts of wood powder, 5-10 parts of a compatilizer, 0.9-3 parts of a lubricant, 0.9-3 parts of a plasticizer and 0.1-0.5 parts of a stabilizer. Addition of the wood powder to the polyethylene/wood powder composite wire inhibits crystallization of polyethylene, reduces shrinkage deformation of a fused deposition modeled product, and improves the modeling precision of the product. The fused deposition modeled product has the advantages of good toughness, improved mechanical performances and strong practicality. The invention also provides the making method of the polyethylene/wood powder composite wire. The method has the advantages of easy operation, low technological conditions and production device requirements, realization of large-scale popularization and production, wide market prospect and extremely good market benefits.

The invention discloses dexlansoprazole enteric-coated slow controlled-release pellet tablets belonging to the field of slow controlled-release preparations, and in particular relates to a preparation method of acid-sensitive proton pump inhibitor (PPI) slow controlled-release pellet tablets. The pellet tablets are prepared by tabletting and coating two types of pellets with different release speeds as well as a filler, a disintegrating agent and a lubricant, and release active ingredients at different release speeds, wherein one type of the pellets are enteric-coated quick-release pellets, and the other type of the pellets are enteric-coated slow-release pellets.