101results about How to "Simple film forming process" patented technology

The invention discloses a controlled release fertilizer coated by vegetable oil based polyurethane and a preparation method thereof. The preparation method of the controlled release fertilizer coated by vegetable oil based polyurethane comprises the following steps of: 1) preheating the granular fertilizer; 2) heating plant oil polyhydric alcohol containing 2-6 hydroxys and isocyanate containing at least two isocyanate groups, and uniformly mixing the ingredients to form a vegetable oil based polyurethane coating liquid; 3) spray coating the vegetable oil based polyurethane coating liquid on the surfaces of the preheated fertilizer granules, repeatedly spray coating the vegetable oil based polyurethane coating liquid for 2-10 times after the vegetable oil based polyurethane coating liquid solid is solidified to obtain the controlled release fertilizer coated by vegetable oil based polyurethane. According to the controlled release fertilizer coated by vegetable oil based polyurethane and the preparation method thereof provided by the invention, the adopted coating material is extensive in resource, cheap and liable to obtain, non-toxic, harmless, simple in production process and good in controlled release effect of fertilizer.

The present invention is concerned with an electron beam apparatus comprising: a hermetic container; an electron source disposed within the hermetic container; and a spacer; wherein the spacer includes at least a region where a layer containing fine particles exists, a sheet resistance measured at the surface of the region of the spacer is 10<7 >Omega/□ or more, and the fine particles are 1000 Å or less in the average diameter of the particles and includes at least metal elements. The electron beam apparatus exhibits the excellent display quality which suppresses the displacement of the light emission point with the charge and the creeping discharge, and the long-period reliability.

The invention publishes a method for producing the TiO2/PVDF blending positive ion exchange membrane, which involves a method for producing high polymer organic membrane. This invention enhances the water affinity of PVDF positive ion exchange membrane, the mechanical strength and anti-pollution capacity. The positive ion exchange membrane includes FI ethane, polypropylene, crosslinking agent, titanium dioxide grain and organic solvent with activity groups. This invention is as follows: a. dissolving the FI ethane and polypropylene in the organic solvent; B. joining crosslinking agent; C. filtering insoluble substance; D. joining titanium dioxide grain; E, mixing the solution well-proportioned and deaeration; F, creating membrane on the glass plate; G, drying, and solidifying. The TiO2/PVDF blending positive ion exchange membrane does not only retains the fine characteristic of FI ethane exchange membrane, but also improves the membrane surface energy,and enhances the water affinity, and increases the ability to repel outside pollutant.

The invention provides a gel polymer electrolyte. A polymer membrane absorbs an electrolyte and swells to form the gel polymer electrolyte, and the polymer membrane is formed through thermocuring self-crosslinking of a liquid polymer mixture; and the liquid polymer mixture contains a pure acrylic emulsion, water and ammonia water, and the glass transition temperature of the pure acrylic emulsion is -30 - 50 DEG C. The invention also provides a polymer lithium ion battery adopting the gel polymer electrolyte, and a making method of the polymer lithium ion battery. The gel polymer electrolyte has the advantages of substantial improvement of the security, stable electrochemical performances and high voltage resistance, can realize the inhibition of the generation of lithium dendrites, no liquid leakage, substantial improvement of the security and good cycle stability when the gel polymer electrolyte is used in the polymer lithium ion battery, and is more suitable for lithium ion power batteries.

The invention relates to a porous perovskite film, carbon slurry and a carbon electrode based solar cell. The chemical formula of the perovskite film is ABX3, wherein A is at least one monovalent cation, and is preferably at least one or a mixed ion of CH3NH3<+>, NH2-CH=NH2<+>, Cs<+>, Li<+>, C4H9NH3<+>, CH6N3<+>, Na<+> and K<+>, B is at least one of PB<2+>, Sn<2+>, Ge<2+>, Co<2+>, Fe<2+>, Mn<2+>,Cu<2+> and Ni<2+>, and X is at least one of Cl<->, Br<->, I<->, SCN<-> and BF4<->. The perovskite film is of a porous structure.

The invention provides a biodegradable algae liquid plastic film, which is characterized by comprising the following components in parts by weight: 100 parts of algae extract, 2-10 parts of polyacrylate alginate jelly resin, 50-70 parts of lignosulfonate, 10-20 parts of humic acid, 20-30 parts of molasses or biochemical fulvate or a mixture of molasses and biochemical fulvate at a weight ratio of 1: 2, 10-20 parts of carboxymethyl cellulose and 300-500 parts of water. In addition, the invention also provides a preparation method of the algae liquid plastic film.

The invention discloses a preparation method of a temperature response type polyvinylidene fluoride flat separation film, in particular to an intelligent type macromolecular flat separation film technology, belonging to the technical field of films. The intelligent type macromolecular flat separation film technology comprises the following steps of: 1, conducting the alkali treatment of PVDF powder; 2, preparing a temperature-sensitive copolymer, i.e. copolymerizing the PVDF powder subjected to the alkali treatment with a temperature-sensitive monomer NIPAAm, and synthetizing a PVDF-g-PNIPAAm copolymer; and 3, preparing the temperature response type PVDF flat separation film by using a phase inversion method. The preparation method of a film-forming copolymer has simple process, low cost, no need of special equipment, easy industrialized construction, and the like. The intelligent film product is a novel temperature response type PVDF intelligent film which can sensitively respond to the change of environmental temperature.

The invention relates to a traditional poultry egg product composite nano-material coating preservation method, belonging to the poultry egg fresh-keep packaging technical field. The method comprises the following steps: 5%-10% polyvinyl alcohol and 0.1%-0.5% nano-SiO2 are dissolved in water and heated; 1% -5% stearic acid is dissolved in (w/v is equal to 1:15-20) ethanol and heated; when the temperature of the polyvinyl alcohol solution and that of the stearic acid solution reach 80-85 DEG C at the same time, the two solutions are mixed, heated and stirred evenly to prepare the composite film coating agent; and the composite coating agent is hot-coated on the surface of the poultry egg and then dried with hot air and filmed. Compared with the cooked egg vacuum-packaging, the poultry egg coating preservation method can significantly reduce the using amount of packaging materials and simplify the packaging sterilization technique of the cooked eggs; besides, the poultry egg coating preservation method can achieve mechanized operation, effectively reduce the damage rate of eggs and significantly improve the economic benefits; moreover, the composite coating material is safe and degradable, which improves the marketability of products after being filmed on the egg surface and can also extend the shelf-life of the cooked egg products.

The invention relates to a preparation method of a transparent conductive film, wherein the method comprises the following steps of: uniformly dispersing an ethanol solution of a silver nano-wire on the surface of a transparent polyethylene terephthalate (PET) thin film; drying for 10minutes at 60 DEG C until the ethanol is completely volatilized; coating a layer of oil-face paper on the surface of the PET thin film; transferring the thin film onto a flat hot press; and heating, pressurizing, forming a film and cooling to obtain the transparent conductive film. The preparation method of the transparent conductive film disclosed by the invention is simple in process, low in cost of the adopted equipment, and high in light transmittance and excellent in bending resistance of the prepared film.

The invention discloses a tungsten bronze-based super-hydrophobic transparent heat-insulating coating and a preparation method thereof. The tungsten bronze-based super-hydrophobic transparent heat-insulating coating is obtained by adding hydrophobically modified nano tungsten bronze and hydrophobically modified powder into a resin solution for dissolving an organic solvent to form a film, synthesizing nanometer cesium-tungsten bronze and nanometer sodium-tungsten bronze through a solvothermal method, then respectively modifying the nanometer cesium-tungsten bronze, the nanometer sodium-tungsten bronze and nanometer silicon dioxide to serve as inorganic components, combining organic resin to prepare the super-hydrophobic coating, and coating the surface of a substrate with the tungsten bronze-based super-hydrophobic transparent heat-insulating super-hydrophobic coating by adopting a film forming process, wherein the static contact angle of the obtained tungsten bronze-based super-hydrophobic transparent heat-insulating coating is larger than 155 degrees, and the rolling angle is smaller than 10 degrees. The nano tungsten bronze-based super-hydrophobic transparent heat-insulating super-hydrophobic coating is good in dispersity, and a prepared coating is good in binding force with a matrix and good in transparent heat-insulating effect.

The invention relates to a graphene oxide/PVDF (polyvinylidene fluoride) blended cation exchange membrane and a preparation method thereof. The cation exchange membrane is prepared from the following components and raw materials in percentage by weight: 5-20% of polyvinylidene fluoride, 0.1-5% of graphene oxide, 50-70% of an organic solvent, 10-20% of divinyl benzene, 6-20% of glycidyl methacrylate, and 0.5-5% of benzoyl peroxide. The preparation method comprises the following steps: preparing membrane casting liquid firstly, preparing the membrane casting liquid into a base membrane by utilizing a tape casting method, cleaning the base membrane, and modifying the base membrane so as to obtain the cation exchange membrane. Compared with the prior art, the graphene oxide/PVDF blended cation exchange membrane prepared by using the method disclosed by the invention has the advantages that not only can the original excellent characteristics of PVDF cation exchange membranes be retained, but also the surface properties of PVDF cation exchange membranes are improved, the hydrophilicity, mechanical strength and acid and alkali resistances of membranes are enhanced, and the anti-pollution capacity of membranes is improved.

The invention provides a nitrogen dioxide gas sensor and preparation and testing methods of the nitrogen dioxide gas sensor. The sensor structure is an organic thin-film field effect transistor, and comprises a gate electrode, a substrate, a gate oxide layer, a source electrode and a drain electrode, as well as an active layer; the active layer is a composite thin film formed by compounding ZnO nanorods and a P3HT polymer; the preparation method comprises the following steps: (1) preparing the ZnO nanorods by use of a low-temperature hydrothermal method; (2) depositing a P3HT-ZnO composite material on the source electrode and the drain electrode by use of a spraying film-forming method, wherein the ZnO nanorods are in contact with the P3HT polymer to form a heterojunction structure; the sensor is capable of effectively increasing the migration rate of the OTFT device and the response of the gas sensor to a gas to be tested; the film forming process is simple, the production cost is low, the electrical properties of the FET device can be improved favorably, and the response of the gas sensor can be effectively improved according to the change of the potential barrier of the interface after the molecules of the gas to be tested are adsorbed on the interface of the formed heterojunction structure.

The invention discloses a preparation method of an aromatic polyamide nanofiltration membrane. The method is mainly characterized by comprising the following steps of: on the basis of utilizing aromatic polyamide as a major polymer membrane preparation material, completely defoaming a membrane casting liquid containing aromatic polyamide, organic solvent and additives; then flatly paving the product on a non-woven fabric by use of a membrane casting machine; evaporating in an oven for certain time; and curing in a gel tank to obtain the membrane. By adopting the preparation method, the nanofiltration membrane has relatively high rejection rate against small-molecular organisms, especially the dye with molecular weight of about 400, and has a penetration rate of greater than 80% for sodium sulfate and sodium chloride, thus being suitable for the concentration and desalination of dye.

The invention relates to a bipolar membrane with aluminum hydroxide as an intermittent interface layer catalyst and a preparation method of the bipolar membrane. The bipolar membrane comprises an anion exchange membrane layer, an intermittent interface layer and a cation exchange membrane layer, wherein the intermittent interface layer is positioned between the anion exchange membrane layer and the cation exchange membrane layer; the intermittent interface layer is prepared from nano aluminum hydroxide powder of which the particle size is 10-30nm. As Al(OH)3 is adopted as the catalyst of the intermittent interface layer of the bipolar membrane, the bipolar membrane is relatively solidly combined with the ion exchange membrane layer, the loss of reaction activity sites is greatly retarded,and the obtained bipolar membrane is high in hydrolysis efficiency, good in membrane layer compatibility, low in transmembrane voltage and stable in use performance.

The invention discloses a hollow hydrophobic fiber membrane and a preparation method thereof, and provides a hollow hydrophobic fiber membrane with good hydrophobic performance and a preparation method thereof. The hydrophobic membrane comprises, by mass, 13-17% of polymers, 5-15% of inorganic nanoparticle nucleating agents, 1-5% of organic liquid nucleating agents, 60-66% of organic solvent and 5-15% of pore-forming additives. The preparation method includes evenly mixing the dried inorganic nanoparticle nucleating agents and the dried polymers at a high speed, evenly dispersing in the organic solvent while stirring, adding the pore-forming additives and organic liquid nucleating agents, mixing evenly and removing bubbles to obtain required membrane casting liquor, extruding the membrane casting liquor by a spinning jet, subjecting the membrane casting liquor to a coagulating bath at the temperature of 40-60 DEG C, fully rinsing in ethyl alcohol at the temperature of 10-60 DEG C after freezing, and drying at the temperature of 30-70 DEG C to obtain the hollow hydrophobic fiber membrane. During membrane forming, polyvinylidene fluoride forms crystalline structures in different sizes, so that high hydrophobization of the hollow hydrophobic fiber membrane is realized.

The invention provides a powder covering substrate heating CH3NH3PbI3 perovskite film preparation method, belonging to the technical field of perovskite solar cell films. The process steps of the prior art are complex, and the requirement of process conditions is high. According to the method, a PbI2 film is prepared on a substrate firstly, and a CH3NH3PbI3 perovskite film is generated by the solid phase reaction of CH3NH3I and PbI2 in the PbI2 film. The method is characterized in that CH3NH3I crystal powders with the particle diameter of 10 to 50 micrometers are evenly spread at the surface of the PbI2 film, the heating is carried out from the substrate and 80 to 100 DEG C solid phase reaction temperature is provided for the CH3NH3I and the PbI2, and the solid phase reaction is completed through 8 to 10 minutes. The preparation method is simple, the process condition is loose, the product film is in a multi-crystalline state, the structure is compact, the crystallinity is high, the grain size reaches a micrometer level, the absorption is good in a visible light band, and the method can be used as a light absorbing material in the field of photovoltaic.