63results about How to "Facilitate osmotic diffusion" patented technology

The invention relates to an inner support hollow fibrous membrane which adopts a hollow braided rope as an inner supporting material. A base body polymer, a metal organic framework material and a pore forming agent are mixed together to be dissolved with a solvent, a membrane casting solution is obtained, the membrane casting solution coats the hollow braided rope, and solidification forming is performed to obtain the inner support hollow fibrous membrane. The metal organic framework material is adopted for improving the porosity and water flux of the inner support membrane; the proper proportion of the metal organic framework material to the pore forming agent in the membrane casting solution, organic coordination and synergism of the components are utilized, the interface wettability of the membrane casting solution and a coagulating bath can be effectively controlled, a coagulator and solvents in the membrane casting solution are easily dispersed and penetrate into the interface, effective combination of the membrane casting solution formula and the pore forming conditions is utilized, and the inner support hollow fibrous membrane of different pore diameters and different rejection performances can be spun; the obtained inner support hollow fibrous membrane can be used for an MBR and an immersed ultrafiltration assembly, the probability of broken yarn and sewage plugging is lowered, and the service life of the membrane is prolonged.

The invention provides a multifunctional selenium-enriched controlled-release special fertilizer for rice. The fertilizer is prepared from the following raw materials in parts by weight: 80-200 parts of 3% chitosan coated compound fertilizer, 200-450 parts of 4% chitosan coated compound fertilizer, 50-350 parts of 5% chitosan coated compound fertilizer, 50-200 parts of sulphur water soluble polymer double coated urea, 50-150 parts of potassium chloride, 50-260 parts of monoammonium phosphate, 30-70 parts of sodium selenite, 5-20 parts of EDTA (Ethylene Diamine Tetraacetic Acid) Chelating zinc, 8-30 parts of calcium magnesium phosphate fertilizer and 2-15 parts of borax. The fertilizer provided by the invention is reasonable in proportion of nutrients. By adopting chitosan as a coating material and adding microelements such as silicon and zinc, the cultivation of resilience of rice is enhanced, and the yield-increasing effect is remarkable. As the element selenium is added, the quality of rice products is remarkably improved. The fertilizer is applied once without topdressing all over the year, thereby saving labor and effort.

The invention relates to a method and a device for supercritical CO2 assisted preparation of regenerated rubber. In the method, supercritical CO2 is introduced into a chamber with a shearing meshing device, and permeation and swelling effect of a supercritical fluid are utilized, so as to help a desulfurizing agent spreading under the effects of extrusion and shearing to enter the inside of waste rubber powder so that the cross-linked network of the waste rubber powder is broken, thereby realizing the regeneration and utilization of the waste rubber powder. By utilizing the method, the time of entering a regeneration softener into the inside of the waste rubber powder can be greatly shortened, the time of regeneration and desulfurization is shortened and the temperature, supercritical CO2 pressure, shearing strength in the processing process can be independently regulated; by utilizing the method, the regenerated rubbers of the waste rubber powder, which have different types and different properties, can be prepared; and the prepared regenerated rubber has the advantages of strong material adaptability, stable product property and the like, and is environment-friendly.

The utility model belongs to field of solar battery, and relates to a manufacturing approach of flexible nanometer-crystalline film of dye sensitizing solar battery, which adopts nanostructured porous TiO2 powder as the material and forms the porous TiO2 film by depositing on a conducting substrate by vacuum deposition. The utility model is characterized in that a porous TiO2 film is made by vacuum cold coating, wherein the nanostructured porous TiO2 powder is accelerated by airflow and impacts on the substrate or the TiO2 coat at a high speed to speed up the combinations of the powder under the pressure of high speed impact at instantaneous high temperature rise; therefore the coat is combined well with the substrate and so are the grains in the coat. The film made by the above approach dose not need to go through high temperature process during manufacturing and after manufacturing, therefore is suitable for manufacture of flexible nanometer-crystalline film of dye sensitizing solar battery.

The invention relates to a method for preparing nanocrystal cellulose I by applying acid cation exchange resin, comprising the following steps of: adding fibers and the cation exchange resin in a solvent to obtain a suspension; stirring the suspension or carrying out ultrasonic or microwave radiation on the suspension; then further carrying out ultrasonic dispersion on the suspension and filtering the cation exchange resin to obtain a fiber suspension through separation; and further centrifugally purifying the fiber suspension in high speed to obtain the nanocrystal cellulose I. Because the acid cation exchange resin is used as an acid catalyst capable of decomposing H+ in the solution, the invention overcomes the defect of liquid acid reaction, and has the advantages of repeatable use, small equipment corrosion, little damage on the cellulose degradation, low environmental pollution and the like. Meanwhile, through combining with the special ultrasonic energy form and utilizing the energy, local high temperature, high pressure and cavatition generated by the ultrasonic, the method increases the surface area of the cellulose, promotes the permeation and diffusion of the solvent in the cellulose, and enhances the accessibility of the functional group of the cellulose.

The invention relates to a method for using a cotton stalk core or a bluish dogbane stalk core for the production of paper pulp. The invention uses a bio-fermentation method for the production by taking the cotton stalk core or the bluish dogbane stalk core subjected to separation of peel and core as raw materials. The production of the bio-fermentation method comprises a fermentation softening step and a pulping step. The fermentation softening step comprises: immersing the cotton stalk core or the bluish dogbane stalk core in the solution of a catalytic decomposition agent that is composite bio-enzyme comprising laccase and lignin enzyme. The invention has the beneficial effects that: the invention can directly immerse the crushed stalk cores, which are separated by a cotton stalk peel-core separating machine, in the solution of the catalytic decomposition agent to degrade lignin and soften fibers, without setting the procedures of crushing the raw materials. Cellulose and hemicellulose in the resultant product of the invention are retained to a maximum extent, pulping by employing the invention is pollution-free, the unscreened yield is 75-85%; the produced paper is not liable to brightness reversion. The invention is replaceable for wood pulp papermaking and is favorable for the protection of ecological environment.

The invention discloses a water dispersible polyaniline/carbon nanotube composite resistive type film gas-sensitive element and preparation method thereof, and the product is prepared by coating a layer of water dispersible polyaniline/carbon nanotube composite sensitive film on an interdigital gold electrode. The gas sensitive film is composed of polyaniline and carbon nanotube compound. The method has the advantages of simple preparation technology and mild condition, and the product is suitable for batch production. The prepared gas-sensitive element has the advantages of wide measurement scope of ammonia gas, high response sensitivity, good restorability, good linearity, room temperature detection, etc., and can be widely applied to room temperature accurate measurement of ammonia gas concentration in the industrial and agricultural production process and atmosphere environment.

The invention discloses a method for preparing a zinc oxide by using an ultrasonic synthesis method. The method comprises the following steps: respectively preparing a strong alkali solution and a zinc salt solution with the same volumes; respectively carrying out preheating treatment on the two solutions at the temperature of 0-100 DEG C; putting the strong alkali solution into an agitator blade, carrying out mechanical stirring, and simultaneously carrying out ultrasonic dispersion; injecting the zinc salt solution into the strong alkali solution, and further carrying out ultrasonic stirring for 10-60 seconds to obtain a mixture; standing and participating the mixture for 2-3 hours, filtering out an upper clear liquid, adding deionized water and further washing until the pH value of the upper clear liquid is neutral; washing with absolute ethyl alcohol; and finally drying to obtain solid powder. The synthesis method disclosed by the invention is simple and fast; zinc salt can be prepared by participation reaction in a water solution under the alkaline condition; and the prepared zinc oxide is applied to a dye-sensitized solar cell light anode, so that diffusion and permeation of quasi-solid electrolyte are facilitated; the relatively large specific surface area can be provided; and the adsorbing capacity of dyes is increased.

The invention relates to a preparing method of an internally-supported reinforced type polyvinylidene fluoride hollow fiber film. The preparing method comprises the steps that a sodium hydroxide aqueous solution is used for removing grease dirt on the surfaces of braided ropes, and then the hollow braided ropes are treated with a polyester-polyether block copolymerization type hydrophilic finishing agent; then, the outer surfaces of the treated braided ropes are coated with a thin layer of a polyvinylidene fluoride film casting solution, solidifying and forming are carried out, and the internally-supported reinforced type polyvinylidene fluoride hollow fiber film is obtained. Polyether soft segments and polyester hard segments exist in molecules of the adopted polyester-polyether block copolymerization type hydrophilic finishing agent, and according to the similarity and mutual attraction principle, the polyester hard segments can generate co-solubility and co-crystallization effects with polyester in the heated process to enable the hydrophilic finishing agent to be preserved on the braided ropes for long; meanwhile, the polyether soft segments can generate a co-solubility effect with the film casting solution to enable the polyester braided ropes and the polyvinylidene fluoride film layer to have good binding performance; the prepared internally-supported reinforced type polyvinylidene fluoride hollow fiber film can be used in MBR and immersion type ultrafiltration assemblies.

The invention relates to a method for preparing nano-crystal cellulose II by using basic anion-exchange resin. The method comprises steps of: adding fibers and ion exchange resin into a solvent to obtain a suspension; performing agitation, ultrasound or microwave radiation processing to the suspension; then further performing the ultrasonic dispersion processing to filter out the ion exchange resin and obtain a fiber suspension after separation; and finally obtaining the nano-crystal cellulose II through further high-speed centrifugal purification to the fiber suspension. The invention takes basic anion-exchange resin as an alkaline catalyst that can dissociate OH- from the solution, overcomes disadvantages of liquid alkali reaction, can be used repeatedly, has little corrosion to equipment, excellent catalytic activity, wide temperature range for use, can work normally under different pH values, and has the advantages of slight degrade damage to the cellulose and less environmental pollution.

The invention discloses an acid soil improvement fertilizer and a preparation method thereof. The acid soil improvement fertilizer is composed of improvement plant ash, special bacillus subtilis agent, shell calcium powder, high-molecular improving anionic polyacrylamide and microelements containing borax and zinc sulfate. The preparation comprises thoroughly and uniformly mixing the materials above in a mixer and performing physical granulation through an extrusion device. According to the practical situation and through long-term practice research and pilot plant test, the acid soil improvement fertilizer is proved to take effects 1-3 months after application, be capable of improve acid soil, loosen soil, improve soil fertility, improve soil ph and have no damage to other soil properties. Meanwhile, the acid soil improvement fertilizer can rapidly supplement organic matters, nutritious elements such as carbon, calcium, silicon, magnesium and zinc and microbial flora, improve soil permeability and activity of microorganisms, fundamentally improve the microbial chain of soil, reduce volume weight of soil, enhance soil porosity and improve the content of soil organic matters and the activity of the microbial flora. Besides, the acid soil improvement fertilizer is low in cost and significant in effect during production application.

The invention discloses a ceramic powder preparation method based on freezing casting molding. The method comprises the following steps: (1) mixing a powder raw material, a solvent and an additive toobtain slurry with the solid phase content of 30-70wt%; (2) converting the slurry into a raw material blank with an internal through hole structure by adopting freezing casting molding and vacuum freeze drying processes and utilizing a temperature gradient formed by a mold; (3) putting the raw material blank into a reaction device with airflow control and anti-pollution functions in a high-temperature graphite sintering furnace, and carrying out high-temperature synthesis in a controlled reaction environment; and (4) carrying out ball milling and carbon removal process treatment on the raw material blank synthesized at high temperature to obtain the high-purity ceramic powder. The method can be used for macroscopic preparation of ceramic powder such as nitride and nitric oxide based on high-temperature gas-solid synthesis reaction, and has good application prospect and popularization value.

The invention discloses a continuous impregnation and pressing ultrasonic gluing machine comprising a frame, an impregnation tank, an ultrasonic unit, multiple groups of rolling mechanisms and driving units. The impregnation tank is arranged on the frame. The ultrasonic unit is arranged on the lower portion of the impregnation tank. The rolling mechanisms are arranged along the length direction of the impregnation tank in a spaced manner, and each rolling mechanism comprises a support, an upper press roller and a lower press roller. The driving units drive the lower press rollers of the rolling mechanisms to rotate. The continuous impregnation and pressing ultrasonic gluing machine can improve working efficiency.

The invention provides a preparing method of cold chain fast food bean curd skin and belongs to the technical field of food deep processing. According to the method, a low-temperature permeation seasoning technology and a proper-temperature vacuum taste permeation-drying technology are used for replacing a traditional high-temperature boiling taste permeation technology, the color and the luster of products are maintained, the texture quality of the products is improved, great special flavor and mouthfeel of the products are achieved; composite processing of natural biological agent freshness retaining-boiling water sterilization-cold chain circulation is used, food safety in a product processing link is improved, and product goods shelf life is prolonged to more than two months. The products can be eaten after being cooked simply or heated, the products can also be put in instant noodles as a nutrition seasoning packet, flavor is easy to modify, and the requirements for diversification, convenience and nutrition and the requirements for fast-paced life of modern consumers are met.

The invention relates to a preparation method and application of a complex sodium ion battery negative material. The preparation method comprises the following steps: weighing 1-2 parts of chlorella and 1 parts of tin salt to add into deionized water according to raw material part by mass ratio, magnetically stirring and centrifuging, washing precipitate, and drying in an oven to obtain a laurel-green solid sample; grinding the solid sample as powder, mixing with 4-12 parts of selenium powder, placing in an alundum boat to calcining, thereby obtaining stannic selenide-stannous selenide-chlorella derived carbon compound; mixing and grinding the stannic selenide-stannous selenide-chlorella derived carbon compound, the conductive agent super P-carbon, and adhesive CMC, coating on the copper foil to assemble as a button cell. Through the determination, after circularly charging/discharging for 600 times at the voltage of 0.01-3.0V and the large current density of 1A/g, the specific capacity is stabilized at 300 mAh/g and more, the capacity retention ration reaches up to 85.7%; the preparation method disclosed by the invention is extensive in raw material source, low in cost, capable ofproducing in large scale and conforms to an environment requirement.

The invention discloses a new application of microalgae gel. The microalgae in the microalgae gel can promote wound healing through photosynthesis and respiration. Dressing for wound repair comprisesa dressing component and a fixing component which is used for fixing the dressing component on an affected part, wherein the dressing component comprises a material storing sac, gel balls, an antibacterial ventilated inner lining and a plaster. The invention also provides a use method of the dressing for wound repair. The use method comprises the following steps of S1, injecting microalgae-high molecular material mixed liquor to a calcium chloride aqueous solution to obtain the gel balls, transferring the shaped gel balls into the material storing sac, and performing sealing so as to obtain the dressing for wound repair. After the dressing containing microalgae gel, for wound repair, disclosed by the invention is attached to a wound surface, through isolating the wound surface from the external environment, a wound is not in contact with pathogens in the environment.

The invention belongs to the technical field of a sodium ion battery material, and particularly relates to preparation of a composite sodium battery negative electrode material with a molybdenum disulfide-chlorella derived few carbon layer having large-current and long-lifetime characteristic. Molybdenum disulfide in the material has a few-layer structure with 1-4 layers and has ultrasmall nanometer gain size (5-10 nanometers); and chlorella derived carbon is amorphous carbon and is provided with rich N and P heteroatom doping. The technical scheme comprises the following steps of adding chlorella and a molybdenum source into an aqueous solution, performing centrifugal drying after stirring for a certain time, and preparing the molybdenum disulfide-chlorella derived carbon composite layerwith the few-layer structure by calcination and vulcanization. A result shows that the sodium ion battery negative electrode material has the sodium storage characteristic of large current and long lifetime; and the preparation process is simple and is high in operability, wide in raw material source and low in cost, mass production can be achieved, and the environmental requirement is met.

The invention belongs to the field of manufacturing and use of health physiotherapy equipment, and particularly relates to a graphene heat moxa fumigation eye physiotherapy instrument and a using method thereof. A reflector made of tinfoil film materials is arranged at the front side of an inner cavity of a shell, an electrothermal film net-shaped pressing plate which achieves the effect is arranged at the rear side of electrothermal film, a drug adsorbing pad which is of a square plane structure and is used for adsorbing moxa fumigation therapy liquid is arranged at the rear side of the electrothermal film net-shaped pressing plate, moxa fumigation therapy drugs are uniformly sprayed on the drug adsorbing pad, and 30-50 mL of moxa fumigation therapy drugs are utilized every time until thedrug adsorbing pad has a sense of wetting. Through a timer loop installed between a USB interface and the electrothermal film, the required physiotherapy duration is set, a fixing band is utilized for fixing the graphene heat moxa fumigation eye physiotherapy instrument to the periphery part of the eyes, after the instrument is started and electrified for 30 s and the eyes have a sense of warmth,the eyes are in a physiotherapeutic state, the physiotherapy duration each time is 15-30 min, and physiotherapy is conducted 2-3 times every day; the graphene heat moxa fumigation eye physiotherapy instrument is simple in main body structure and ingenious in design and concept, has a good using effect, is friendly to the application environment, and has a wide market prospect.

The invention discloses an AlN ceramic powder preparation method based on 3D printing molding. The method comprises the following steps: (1) mixing raw material powder, a solvent and an additive to prepare raw material ink with high solid content; (2) printing the raw material ink into a raw material blank with a regular three-dimensional through hole structure by adopting a 3D printing molding process, and drying the raw material blank; (3) putting the raw material blank into a reaction device with airflow control and anti-pollution functions in a high-temperature graphite sintering furnace,and carrying out high-temperature synthesis in a controlled reaction environment; and (4) finally, carrying out ball-milling process treatment to obtain the high-purity AlN ceramic powder. According to the method, the raw material powder can be printed into the blank with the regular three-dimensional through hole structure, the gas-solid synthesis reaction can be fully carried out during high-temperature synthesis, and the high-purity AlN ceramic powder can be obtained by combining the ceramic powder synthesis reaction device with airflow control and anti-pollution functions.