30results about How to "Solve the problem of easy reunion" patented technology

The invention belongs to the field of functionalized porous nano materials, and particularly relates to a method for preparing a cobaltous oxide manganese nano flower / carbon sponge flexible compositematerial. The method comprises the steps of: taking a commercial melamine sponge, then performing washing with distilled water and absolute ethanol, performing drying, and then performing process temperature rise calcining of the melamine sponge under the nitrogen or argon atmosphere to obtain a carbon sponge after cooling; preparing a mixed solution containing a manganese salt and a cobalt salt,immersing the carbon sponge into the mixed solution for the hydrothermal reaction, taking out the carbon sponge after the reaction is finished, washing the carbon sponge with distilled water and performing drying to obtain a manganese-cobalt hydroxide precursor-carbon sponge composite material; and further, performing annealing reaction in the argon atmosphere to obtain a cobaltous oxide manganesenano flower / carbon sponge flexible composite material. The flexible, porous and self-support carbon sponge is taken as a growth template to successfully solve the problem that the nano material is easily gathered, and the obtained composite material has a lot of exposure active sites, abundant pores and good electrical conductivity.

The invention discloses a mixed matrix membrane of bead-like MOF filled silicone rubber. A preparation method of the mixed matrix membrane comprises the following steps of: firstly, respectively adding FeCl3 and pyrrole into an aqueous solution of MO, stirring for reaction, washing and drying to obtain PPy; then dispersing PPy in a methanol solution, and adding a ligand to obtain a dispersion liquid 1; dropwise adding a methanol solution of 2-MeIm into the dispersion liquid 1, stirring for reaction, washing and drying to obtain MOF / PPy; and dispersing MOF / PPy in a solvent, adding silicone rubber, a cross-linking agent and a catalyst, stirring for reaction, coating a flat sheet membrane with the obtained product, standing, and drying to obtain the target product. The mixed matrix membrane provided by the invention has excellent permeability and separation performance.

The invention discloses a flexible N / SnOx@rGO composite material based on a biological material substrate, a preparation method and application thereof. The N / SnOx (at) rGO composite material is prepared by adopting a freeze drying method and a CVD (Chemical Vapor Deposition) method. A biological material degreasing cotton is selected as a carbon substrate, the material is cheap and easy to obtain, and the synthesis process is simple and easy to operate. The synthesized N / SnOx particles are small in size and high in crystallinity, in addition, the carbon substrate serves as a conductive carbonnetwork, electron transmission is facilitated, and rGO wrapping the carbon fibers can prevent the N / SnOx particles from falling off and can also serve as an electron transmission bridge to be connected with the carbon fiber network.

The invention belongs to the technical field of reverse osmosis membranes, and relates to a high-flux anti-pollution nano-hybrid reverse osmosis membrane and a preparation method and application thereof. The nano-hybrid reverse osmosis membrane includes a polysulfone support layer and a hybrid polyamide desalination layer; the hybrid polyamide desalination layer includes acid chloride-modified titanium dioxide-clay mineral / graphene oxide nanomaterials, the titanium dioxide, clay The mass ratio of mineral and graphene oxide is (3-6):(2-3):(1-4). Preparation method: soak the polysulfone support layer in m-phenylenediamine aqueous phase solution for 0.5-1min, and then place it in TiO modified with acid chloride 2 ‑ATP / GO nanomaterials are reacted in the trimesoyl chloride oil phase liquid for 0.5-1min to obtain a reverse osmosis membrane. The desalination layer of the reverse osmosis membrane of the present invention has an excellent combination degree with the polysulfone support layer, which improves the water flux and anti-pollution performance of the reverse osmosis membrane, so that it can maintain a high desalination rate and water retention during the long-term scouring of surface river water. flux.

The invention discloses a heteropolyacid ionic liquid-loaded aminated magnetic composite material with jujube cake type structure, a preparation method and an application thereof. The raw materials for preparing the composite material include a heteropolyacid ionic liquid and an aminated magnetic composite material. The multi-acid ionic liquid is supported on the aminated nano-magnetic material to obtain a composite material. The preparation steps are as follows: firstly adopt substitution reaction to prepare heteropolyacid ionic liquid, solvothermal method to prepare aminated magnetic composite material, and then adopt ultrasonic loading method to prepare heteropolyacid ionic liquid supported aminated magnetic composite material. The product obtained by the method of the invention is powdery, brown in color, uniform in particle size distribution, jujube cake-shaped structure and stable in property. It overcomes the shortcomings of easy agglomeration of magnetic materials, and the obtained materials have good dispersibility, high magnetic properties, easy access to raw materials, and high yield; both magnetic and catalytic activities can be effectively used as catalysts for desulfurization of petroleum samples, and the catalysts can be separated and recycled. .

The invention belongs to the field of functionalized porous nanomaterials, and in particular relates to a preparation method of a cobalt manganese oxide nanoflower-carbon sponge flexible composite material; the specific steps are: take a commercial melamine sponge, then clean it with distilled water and absolute ethanol, dry it, and then Under a nitrogen or argon atmosphere, heat up the melamine sponge to obtain a carbon sponge after cooling; prepare a mixed solution containing manganese salts and cobalt salts, immerse the carbon sponge in the mixed solution, and perform a hydrothermal reaction. After the reaction, take out the carbon The sponge is washed with distilled water and dried to obtain a manganese-cobalt hydroxide precursor-carbon sponge composite material; further annealing reaction is carried out under an argon atmosphere to obtain a cobalt oxide manganese nanoflower-carbon sponge flexible composite material; the present invention uses flexible , Porous, self-supporting carbon sponge as a growth template successfully solves the problem of easy agglomeration of nanomaterials; and the obtained composite material has a large number of exposed active sites, rich pores and good electrical conductivity.

The invention discloses a self-supporting flexible SiO without binder 2 Preparation method and application of @C composite materials, using a one-step hydrothermal method to prepare free-standing binder-free flexible SiO 2 @C composite material, the synthesis process is simple and easy to operate. Moreover, carbon cloth is selected as the carbon substrate, and the material is cheap and easy to obtain. In addition, nanoscale SiO 2 There are more lithium ion contact sites on the particle surface, which can fully react with lithium, and the carbon cloth acts as SiO 2 The particle carrier makes the nanoparticles evenly distributed on the surface of the carbon fiber, which solves the problem that the nanoparticles are easy to agglomerate, and the carbon fiber can form a conductive carbon fiber network, which is easy to transmit electrons, making the electrons unimpeded on the entire flexible substrate.

The invention discloses a mixed matrix membrane filled with beaded MOF silicone rubber. The preparation method of the mixed matrix membrane is as follows: firstly FeCl 3 and pyrrole were added to the aqueous solution of MO, and after stirring and reacting, PPy was obtained after washing and drying; then PPy was dispersed in the methanol solution, and the ligand was added to obtain the dispersion 1; after that, the methanol solution of 2-MeIm was added dropwise to the dispersion In 1, after stirring and reacting, MOF / PPy is obtained after washing and drying; then MOF / PPy is dispersed in a solvent, and then silicone rubber, cross-linking agent and catalyst are added, and after stirring and reacting, it is coated on a flat film, and the After standing and drying, the target product was obtained. The mixed matrix membrane of the present invention has excellent permeability and separation performance.

The invention provides a tungsten disulfide / carbon nanofiber composite material, and a preparation method and a use thereof. The preparation method comprises the following steps: (1) preparing a polyacrylonitrile spinning solution under high-speed stirring and oil bath conditions; (2) producing polyacrylonitrile nanofibers through adopting an electrostatic spinning technology; (3) pre-oxidizing the polyacrylonitrile nanofibers obtained in step (2) through temperature programmed control; (4) carbonizing the pre-oxidized polyacrylonitrile nanofibers obtained in step (3) through stepwise heating; (5) adding a certain amount of a tungsten disulfide precursor compound into a solvent, and carrying out ultrasonic treatment to obtain a tungsten disulfide precursor solution; and (6) immersing the above obtained carbon nanofiber membrane in the tungsten disulfide precursor solution, placing the obtained mixture in a high pressure reactor, and carrying out a solvothermal reaction at a certain temperature to obtain the tungsten disulfide / carbon nanofiber composite material. The preparation method has the advantages of simple process, easiness in operation, and environmental protection of used polymer and reagents.

A method for preparing nano-ZnO-GO / waterborne polyurethane super-amphiphobic coating by spraying method, adopting the method of ultrasonic hydrothermal compounding, first modifying nano-zinc oxide by perfluorooctyl trichlorosilane, and then applying the modified nano- ZnO and GO were loaded to obtain a nano-ZnO-GO composite. A water-based polyurethane layer was prepared on the surface of the substrate, and then a low-surface-energy nano-ZnO-GO composite layer was constructed on the surface of the water-based polyurethane layer. After the coating was cured, its surface morphology and static contact angle. The invention reduces the surface energy of nano-zinc oxide, improves the hydrophobicity and oleophobicity of the surface of the nano-ZnO-GO composite layer after fluorination treatment, achieves a super-amphiphobic effect, and improves the stability of the coating. The invention has the advantages of low production cost, simple preparation method, low requirements on reaction equipment, mild reaction conditions, no environmental pollution and large-scale production.

The invention discloses a flexible N / SnOx@rGO composite material based on a biological material substrate and its preparation method and application. N / SnO is prepared by a freeze-drying method x @rGO composites. The biomaterial absorbent cotton is selected as the carbon base, the material is cheap and easy to obtain, the synthesis process is simple, and it is easy to operate. Synthetic N / SnO x The particle size is small and the crystallinity is strong. In addition, the carbon substrate acts as a conductive carbon network, which is conducive to the transmission of electrons. The rGO wrapped in carbon fiber can not only prevent the N / SnO x The shedding of particles can also serve as an "electronic transport bridge" to connect the carbon fiber network.

The invention discloses a preparation method of alkali-activated phosphorus slag geopolymer doped with fiber waste mud. Grind until the median particle size is 1-4 μm to obtain slurry A; pulverize the optical fiber waste sludge and pass through a 1.18mm sieve to obtain the optical fiber waste sludge dry powder; take the optical fiber dry powder according to the water material of 0.3-0.7 Specific wet grinding to a median particle size of 100-800nm, to obtain slurry B; get 120 parts of slurry A, 35 parts of optical fiber waste sludge dry powder, 5-50 parts of slurry B, 10-40 parts of phosphogypsum, 20 ‑50 parts of carbide slag, 20‑50 parts of Na 2 CO 3 Mix and stir other materials, and use a mortar mixer with a cement-sand ratio of 1:3 to obtain a fiber-doped waste mud alkali-activated phosphorus slag geopolymer. The invention has simple operation, greatly reduces the production cost, solves the problems of land occupation by solid waste stockpiling, environmental pollution and the like, and has high economic and environmental benefits.

The invention provides a cobalt-nickel oxide / tin dioxide composite nanotube as well as a preparation method and use thereof. The preparation method comprises the following steps: (1) preparing a spinning solution; (2) preparing precursor nanofiber by virtue of an electrostatic spinning; (3) carrying out high-temperature calcination on the precursor nanofiber so as to obtain a tin dioxide nanotube; (4) preparing a mixed solution, with a certain concentration, of nickel salt and cobalt salt; (5) adding the tin dioxide nanotube obtained in the step (3) into the mixed solution obtained in the step (4), adding a pH aid, carrying out solution codeposition reaction at a certain temperature, so as to obtain a cobalt-nickel oxide precursor-tin dioxide composite nanotube; and (6) carrying out temperature-control annealing treatment in a certain atmosphere, so as to convert the cobalt-nickel oxide precursor-tin dioxide composite nanotube obtained in the step (5) into the cobalt-nickel oxide / tin dioxide composite nanotube. The preparation method is simple in process and easy in operation, and adopted polymers and reagents are cheap and environment-friendly.

The invention discloses a softening modifier for inorganic fibers and a preparation method thereof, comprising the following steps: step S10, preparing dispersant A; step S20, preparing softener B; step S30, mixing dispersant A and softener B is packaged separately to obtain the softening modifier for inorganic fibers. The softening modifier for inorganic fibers prepared by the present invention can significantly improve the dispersibility and softness of the inorganic fibers after the inorganic fibers are modified, and enhance the strength of the inorganic fibers so that they are not easy to break and increase the strength of the inorganic fibers. application range.

The invention provides a masterbatch for a graphene anticorrosive coating and a preparation method of the masterbatch. The preparation method comprises the following steps: carrying out depth etchingon rubber powder particles by using laser for improving porosity of the rubber powder particles; then filling graphene into holes of a porous rubber powder material for carrying out high-speed stirring, enabling the porous rubber powder to effectively adsorb and carry graphene and finally obtaining the masterbatch. The prepared masterbatch is added into a waterborne resin coating for reacting withwater and quickly dispersing, and a continuous film is formed inside the coating, so that the graphene is driven to be uniformly dispersed into the coating, and further the problem that the grapheneis easy to overlap and aggregate in the application of anticorrosive coatings is effectively solved. Furthermore, porous emulsion powder particles are used as a carrier, has good compatiblity with thecoating and does not contain any impurity components; besides, the graphene anticorrosive masterbatch prepared by the method, disclosed by the invention, has the advantages of convenience in storage,no environmental pollution and remarkable market application value.