289 results about "Membrane coat" patented technology

A collapsible filter element for a transcatheter embolic protection device comprises a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element. A proximal inlet portion of the filter body has one or more inlet openings sized to allow blood and embolic material enter the filter body and a distal outlet portion of the filter body has a plurality of outlet openings sized to allow through-passage of blood, but to retain embolic material within the filter body. The filter body is at least partially of laminate construction comprising a membrane coated with a coating which is biocompatible, the thickness of the coating being from 4% to 40% of the thickness of the membrane. The coating may be of hydrophilic material. To facilitate retrieval of captured embolic material the distal portion and / or an intermediate portion of the filter membrane may be stretchable. The filter body may have regions of varying hardness or stiffness.

The present invention relates to a method for manufacturing composite polymer electrolyte membranes coated with inorganic thin films for fuel cells using a plasma enhanced chemical vapor deposition (PECVD) method or a reactive sputtering method, so as to reduce the crossover of methanol through polymer electrolyte membranes for fuel cells and enhance the performance of the fuel cells. The manufacturing method of composite polymer electrolyte membranes coated with inorganic thin films for fuel cells according to the present invention is characterized to obtain composite membranes by coating the surface of commercial composite polymer electrolyte membranes for fuel cells with inorganic thin films using a PECVD method or a reactive sputtering method. The inorganic materials to form the inorganic thin films are chosen one or more from the group comprising silicon oxide (SiO2), titanium oxide (TiO2), zirconium oxide (ZrO2), zirconium phosphate (Zr(HPO4)2), zeolite, silicalite, and aluminum oxide (Al2O3). The present invention, by coating the polymer electrolyte membranes for fuel cells with inorganic thin films via a PECVD method or a reactive sputtering method, reduces the methanol crossover sizably without seriously reducing the ionic conductivity of polymer electrolyte membranes, thereby, when applied to fuel cells, realizes a high performance of fuel cells.

A system and device for filtering fluids using graphene oxide (GO) is provided. GO-based filters may be used for the efficient removal of microorganisms from organic and aqueous liquids and may be used to prevent fuel biodeterioration. Functionalization of graphene oxide with reactive oxygen functional groups provides physical properties to the GO including high solubility in polar solvents, good colloidal properties, low production costs, low toxicity, and a large surface area which can be decorated with antimicrobial agents including nanosilver. GO may be used as a filtration media for efficient removal of bacteria and to remove small amounts of water from hydrocarbon fuels. The GO filter media may be made of a plurality of GO particles, a structural core coated with GO, a non-porous structural membrane coated with GO, or a filtering membrane coated with GO. A method for sampling impurities found in an environmental sample is also provided.

The invention provides alumina membrane coated activated carbon and a preparation method thereof. The alumina membrane with the thickness of between 10 and 50nm is coated on the surface of the activated carbon. The preparation method comprises the following steps of: 1) hydrolyzing aluminum isopropoxide, adding nitric acid, refluxing at the temperature of between 90 and 100 DEG C, and preserving temperature to obtain an alumina sol; 2) soaking the activated carbon in the alumina sol for dipping, mixing, drying, heating the mixture to 400 DEG C in a velocity of 40 DEG C / h for calcining, and cooling the mixture to normal temperature in the velocity of 40 DEG C / h. The preparation method has simple process, and the prepared alumina membrane coated activated carbon has the advantages of not influencing the property of the porous structure of the activated carbon and greatly improving the mechanical strength of the activated carbon.

A preparation method for a Cu-based hydrogenation catalyst comprises the following steps: dissolving soluble copper salt into water, then adding a carrier into the solution, and uniformly loading a copper precursor on the surface of the carrier to obtain a precursor sample; mixing the precursor sample and ethanol to form a suspending liquid, coating the suspending liquid on the surface of a glass sheet, impulsing polyisocyanate into an MLD reaction cavity, then impulsing an M precursor to be subjected to monomolecular layer reaction on the sample surface in sequence to obtain a hybrid membrane coated copper precursor compound; conducting heat treatment on the compound in air to obtain a nanometer CuO-MOx compound, and then conducting reduction in the reducing atmosphere to obtain the Cu-MOx interface catalyst. The preparation method has the advantage that the Cu-MOx interface structure can be regulated and controlled.

The invention discloses a microbial sustained-release sphere for soil repairing, and belongs to the technical field of soil repairing. The microbial sustained-release sphere comprises a sustained-release sphere, wherein the sustained-release sphere comprises an inner water-soluble membrane, and the inside of the inner water-soluble membrane coats a plurality of microbial carrier spheres and microbial degradable plastic film spheres, which are distributed alternately; soil repairing microbial flora is adhered to the microbial carrier spheres; the microbial degradable plastic film spheres are filled with hydrogen peroxide; a plurality of straw fiber ropes which are uniformly distributed are fixedly connected on the inner wall of the inner water-soluble membrane, and are in a puffed shape; after being dosed into soil, the sustained-release spheres can be gradually degraded under the moisture effect along with time passing for constantly repairing the soil, the number of microbes can be constantly ensured, multiple dosage is not required, labor and materials can be saved, and the using method is diversified since the microbial sustained-release spheres can be dosed into soil optionallyin a turbid liquid manner.

The invention discloses an air-conditioning temperature-reducing and light-tight preservation box for delivering or storing vegetables in short term. The air-conditioning temperature-reducing and light-tight preservation box comprises a box body and a box cover airtightly covering on an upper opening of the box body; an insulating layer is coated on an inner side wall of the box body; an isolating bracket is arranged at the bottom of the inner side of the box body; a through hole is formed on the isolating bracket; a fluid refrigerant bag is arranged at the bottom inside the box body on the lower part of the isolating bracket; a plurality of air holes are formed on two symmetrical side surfaces of the box body; a selective ventilated membrane coats on the plurality of air holes on the inner side of the box body; and a reflecting coating is arranged on the outer surface of the box body. The air-conditioning temperature-reducing and light-tight preservation box has the advantages that: the preservation box has good function of protecting the vegetables, and is repeatedly used, extrusion resistant, and convenient to load and unload; the tightness of the box body and the selective ventilated membrane which is adhered to the holes on the two side surfaces have good air-conditioning function; by adjusting the number of the holes, the ventilating area of the selective ventilated membrane is adjusted, so that the aim of changing the gas components in the preservation box is fulfilled; the vegetable ageing is prevented; and the repeatedly used ice bag can realize the function of reducing the temperature.

The invention provides a membrane electrode containing a hydrophilic high polymer in an anode catalytic layer and a preparation method thereof. The method comprises the steps of: preprocessing a proton exchange membrane, mixing a carbon supported platinum catalyst, a perfluorinated sulfonic acid polymer solution, an organic high polymer with hydrophilicity or hygroscopicity in water or a low-boilting-point solvent, ultrasonically processing to prepare catalyst slurry, and spraying the catalyst slurry onto one side of the proton exchange membraneby adopting an illumination coating technology to prepare an anode catalytic layer; and spraying slurry, which does not containing the organic high polymer, onto the other side of the proton exchange membrane to obtain a cathode catalytic layer, and laminating the proton exchange membrane coated with catalysts at two sides with a gas diffusion layer to prepare a self-humidifying electrode with the anode containing the hydrophilic high polymer. According to the invention, the self humidification of the membrane electrode can be realized by means of simple and practical preparation method at low cost, and a fuel cell assembled with the self-humidifying membrane can be used for simplifying a system, reducing the cost and increasing the power density of the system.

The invention discloses a method for online preparing a high-throughput composite reverse osmosis membrane. The method comprises the following steps of using a membrane coating machine to enable an ultrafiltration base membrane to pass through m-phenylenediamine aqueous solution, normal hexane solution of trimesoyl chloride, an oven, a purge tank, an oxidation tank, a reduction cell, a glycerite tank and a protective liquid tank; drying in the oven to obtain the high-throughput composite reverse osmosis membrane. The method has the characteristics that the process is simple, the water flux of the membrane is high, dry films of the high-throughput composite reverse osmosis membrane can be directly produced, membrane components can be wound conveniently, large-scale production can be realized, the process is stable, and the like. The high-throughput composite reverse osmosis membrane can be applied in the field of household water purification, municipal administration tap water is utilized to supply pressure without an additional booster pump, the cost is greatly reduced, and the energy is saved.

A method and composition for the identification of biomolecule in a sample are disclosed. The method comprises obtaining a coated capture membrane stack comprising a plurality of capture membranes with each capture membrane coated with a different peptide. The membrane stack is exposed to a sample, and, after a given amount of time for the sample to permeate the membrane stack, the membrane stack is removed from the sample carrier and the capture membrane to which the biomolecule adheres is identified.

The invention discloses a preparation method of an aliphatic polyamide loose reverse osmosis membrane. The preparation method comprises the following steps: coating a porous supporting membrane with achain type aliphatic amine solution by adopting a coating or immersing way, and then carrying out interfacial polymerization on the porous supporting membrane coated with the chain type aliphatic amine solution and a cycloaliphatic acyl chloride solution, thus forming the aliphatic polyamide loose reverse osmosis membrane. The aliphatic polyamide loose reverse osmosis membrane is prepared by carrying out the interfacial polymerization on cycloaliphatic acyl chloride and chain type aliphatic amine, has an excellent removal rate on divalent ions such as Ca<2+>, Mg<2+> and SO4<2->, has very goodanti-fouling performance and high water flux, can be used for removing COD such as dye molecules and phenolic molecules in wastewater, can also be applied to a separating and concentrating process ofmaterials in industries of pharmacy and food or the fields of water softening, seawater desalination or brackish water pretreatment, refuse leachate treatment and the like, and has a huge applicationprospect.