85 results about "Langmuir" patented technology

The present invention includes (a) dividing the reservoir in a coalbed methane (CBM) development area through computer modeling and thereby forming a three-dimensional grids having a plurality of cell, (b) actually forming drilling holes in the development area and thereby obtaining core samples for each depth, (c) modeling the amounts of ash, water, and gas in each of the cells, (d) modeling the pressure change over time in each of the cells under a premise in which a production well is formed in the grids, and (e) performing a Langmuir experiment for the core samples, determining a Langmuir function for a maximum amount of gas adsorption with pressure and amounts of ash and water as variables, and applying the Langmuir function to each of the cells to calculate an amount of gas detected due to pressure change over time.

The invention discloses a method for preparing a nanocomposite dielectric film. The method comprises the following steps of: firstly obtaining a polymer dielectric film by a Langmuir-Blodgett (LB) film method; secondly preparing a high-dielectric inorganic / organic composite nanoparticle film on the polymer dielectric film by the LB film method; and finally preparing a polymer dielectric film on the composite nanoparticle film by the LB film method, thereby forming a high-dielectric composite film material with nanoparticles dispersed in a polymer. The polymer-nanoparticle composite dielectric film material prepared by the method overcomes the shortcomings of the prior art, and the preparation method is reasonable and simple, and easy to operate.

A method for producing a film of vanadium pentoxide nanowires having improved alignment is provided. The method comprises the steps of a) preparing a solution of vanadium pentoxide (V2O5) nanowires by a sol-gel method; b) diluting the solution of vanadium pentoxide nanowires with water and feeding the dilute aqueous solution into a Langmuir-Blodgett trough; c) adding a dispersant to the dilute aqueous solution of vanadium pentoxide nanowires; d) diluting a solution of a dioctadecyldimethylammonium halide with an organic solvent, applying the dioctadecyldimethylammonium halide solution to the surface of the dilute aqueous solution of vanadium pentoxide nanowires in the Langmuir-Blodgett trough, and allowing the solutions to stand to disperse the dioctadecyldimethylammonium halide solution in the Langmuir-Blodgett trough; e) controlling the surface pressure of the dioctadecyldimethylammonium halide solution using barriers mounted on the Langmuir-Blodgett trough; f) affixing a substrate to a dipping arm of the Langmuir-Blodgett trough and bringing the substrate into contact with the surface of the dioctadecyldimethylammonium halide solution; and g) separating the substrate from the dipping arm. According to the method, the alignment of the nanowires can be markedly improved by sol-gel synthesis, the need for subsequent washing can be eliminated, which contributes to the simplification of the production process, and the nanowires can be cut to desired lengths in a simple manner, thereby ensuring the reproducibility of a device using the nanowire film and achieving improved characteristics of the device. Further provided are a vanadium pentoxide nanowire film produced by the method and a nanowire device comprising the nanowire film. The nanowire device can find application in various fields, including field effect transistors and a variety of sensors, due to its excellent characteristics and reproducibility.

An adsorbent for oral administration, characterized by comprising a spherical activated carbon prepared from a thermosetting resin as a carbon source, wherein a diameter is 0.01 to 1 mm, and a specific surface area determined by Langmuir's adsorption equation is 1000 m<2> / g or more; and an adsorbent for oral administration, characterized by comprising a surface-modified spherical activated carbon prepared from a thermosetting resin as a carbon source, wherein a diameter is 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation is 1000 m<2> / g or more, a total amount of acidic groups is 0.40 to 1.00 meq / g, and a total amount of basic groups is 0.40 to 1.10 meq / g. The adsorbents for oral administration exhibit a useful selective adsorbability, that is, a less adsorbability of useful substances in a body, and a greater adsorbability of toxic substances.

A method for producing a film of vanadium pentoxide nanowires having improved alignment is provided. The method comprises the steps of a) preparing a solution of vanadium pentoxide (V2O5) nanowires by a sol-gel method; b) diluting the solution of vanadium pentoxide nanowires with water and feeding the dilute aqueous solution into a Langmuir-Blodgett trough; c) adding a dispersant to the dilute aqueous solution of vanadium pentoxide nanowires; d) diluting a solution of a dioctadecyldimethylammonium halide with an organic solvent, applying the dioctadecyldimethylammonium halide solution to the surface of the dilute aqueous solution of vanadium pentoxide nanowires in the Langmuir-Blodgett trough, and allowing the solutions to stand to disperse the dioctadecyldimethylammonium halide solution in the Langmuir-Blodgett trough; e) controlling the surface pressure of the dioctadecyldimethylammonium halide solution using barriers mounted on the Langmuir-Blodgett trough; f) affixing a substrate to a dipping arm of the Langmuir-Blodgett trough and bringing the substrate into contact with the surface of the dioctadecyldimethylammonium halide solution; and g) separating the substrate from the dipping arm.

The invention relates to a strontium alginate gel bead product coated with hydrous zirconium oxide and an adsorption application of the strontium alginate gel bead product. A hydrous zirconium oxide dispersion liquid is mixed with a sodium alginate water solution according to a certain volume ratio, then the obtained mixture is dropwise added into a strontium salt solution, stirring is carried outto form gel beads, and water washing is carried out to remove excess strontium ions, so that the hydrous zirconium oxide / strontium alginate composite gel beads with a particle size of 0.1-5 mm are obtained. The gel beads can be used for adsorbing and removing anionic pollutants in water. The Langmuir saturated adsorption capacities of the composite gel beads to phosphate micro-polluted water, fluoride micro-polluted water and arsenite micro-polluted water can respectively reach 53 mg / g, 36 mg / g and 61 mg / g. According to the invention, the separation problem of hydrous zirconium oxide can be solved while high adsorption activity of the hydrous zirconium oxide is ensured, and a certain potential application value is achieved in the field of water purification.

The invention discloses a method for preparing a nanocomposite dielectric film. First, a polymer dielectric film is obtained by a Langmuir-Blodgett (LB) film method, and then a high dielectric inorganic / The organic composite nanoparticle film is finally prepared on the composite nanoparticle film by the LB film method to prepare a polymer dielectric film, thereby forming a high dielectric composite film material in which nanoparticles are dispersed in the polymer. The polymer-nano particle composite dielectric film material prepared by the method overcomes the defects in the prior art, and the preparation method is reasonable and simple, and is easy to operate.

This invention generally relates to a method for preparing and transferring a monolayer or thin film. In particular this present invention is an improved version of the Langmuir-Schaefer technique for preparing and transferring a monolayer or thin film, incorporating in situ thermal control of the substrate during the transfer process.

The invention discloses a determination method and device for the shale gas well fracturing reformation scheme and a storage medium, and belongs to the technical field of oil and gas exploitation. Themethod comprises the steps that the formation temperature, the gas deviation factor, the initial formation pressure, the production formation pressure and the cumulative gas production of each gas well in multiple gas wells are acquired, and the Langmuir volume, the Langmuir pressure, the porosity, the water saturation, the density and the adsorbed-state methane density of the shale reservoir corresponding to each gas well are acquired; the initial gas content and the residual gas content of each gas well are determined; the fracturing reformation volume of each gas well is determined; and the gas well with the maximum fracturing reformation volume is selected from the multiple gas wells, and the fracturing reformation scheme of the selected gas well is determined as the shale gas well fracturing reformation scheme. By means of the method, the fracturing reformation volume, determined by actual production data, of each gas well is quite accurate and objective data, and therefore the more optimized shale gas well fracturing reformation scheme can be determined.

The invention provides a method for preparing a two-dimensional ordered porous nano-silica anti-reflection film with a hydrophobic effect. Specifically, the method includes the following steps: Step 1: Synthesizing polystyrene microspheres by a dispersion polymerization method to Polystyrene microspheres are used as templates, and organically modified silicon sources are added under alkaline conditions to synthesize core-shell structure particles of silica-coated polymer microspheres; Step 2: Using Langmuir-Brangett (LB) method, on the glass substrate, the silica-coated polymer microspheres obtained in step 1 are self-assembled into a two-dimensional array film layer; step 3: the silica-coated polymer obtained in step 2 The film layer of the microsphere is post-treated to obtain a silicon dioxide two-dimensional ordered anti-moth-eye nano film layer. The method has the characteristics of low cost and is suitable for large-scale rapid production, and has good application prospects in optical lenses, display screens, photovoltaic cells and the like.