15 results about "Nanotube membrane" patented technology

The embodiment of the invention provides a foil structure with a carbon nanotube and a preparation method thereof, a cold cathode and an X-ray tube, the foil structure comprises a metal substrate, the metal substrate is provided with a first surface and a first side surface, the first side surface is vertical to the first surface, and the first side surface is located at the edge of at least one side of the metal substrate; the bonding layer is located on the first surface of the metal substrate; the bonding layer is arranged on the first surface of the metal substrate, the multiple carbon nanotubes are located on the first surface of the metal substrate, the bonding layer is used for enhancing the bonding strength of the metal substrate and the multiple carbon nanotubes, the multiple carbon nanotubes comprise a carbon nanotube film and multiple discrete carbon nanotubes, the carbon nanotube film is located on the first surface, and the discrete carbon nanotubes are located on the second surface. The multiple discrete carbon nanotubes are located in the area, close to the first side face, of the first surface, at least the other part of the multiple discrete carbon nanotubes is located outside the carbon nanotube film, orthographic projections of the multiple discrete carbon nanotubes on the metal substrate are located outside the first surface, and the at least the other part of the multiple discrete carbon nanotubes protrude in the direction away from the metal substrate relative to the first side face.

The invention belongs to the field of polymer composite materials, and relates to a lightweight electromagnetic shielding composite material and a preparation method and application thereof. The thin film comprises an array carbon nanotube membranous material and a polyolefin elastomer which are compounded with each other, the array carbon nanotube film-like material comprises array carbon nanotubes and a low surface energy polymer; and the content of the array carbon nanotubes in the thin film is 0.01-10% by weight. The electromagnetic shielding sheet provided by the invention can obtain good conductivity and electromagnetic shielding performance under the condition that the addition amount of the carbon nanotubes is extremely small.

The invention belongs to the technical field of high polymer materials, and relates to a thermoplastic resin composition composite foamed sheet and a preparation method thereof. The plate is prepared from a thermoplastic resin composition plate and a reinforcing sheet through mold pressing foaming, the reinforcing sheet is one or more layers of array carbon nano tube / polymer composite reinforcing materials, and the array carbon nano tube / polymer composite reinforcing materials comprise array carbon nano tube film-shaped materials and high-molecular polymers which are compounded with each other. The array carbon nanotube film-like material comprises array carbon nanotubes and a low surface energy polymer; the number of the reinforcing sheets is one or more, the thickness of each layer of the reinforcing sheets is 2 micrometers to 2 mm, and the total thickness of all the reinforcing sheets is not larger than 16 mm. The compatibility between the preset sheet and the matrix resin is greatly improved, and the apparent density and the heat conductivity coefficient of a product can be effectively reduced.

The application belongs to the technical field of high polymer materials, and relates to application of array carbon nanotube / high polymer composite reinforcing sheet in polymer foaming process and injection molding foaming forming body. In the polymer foaming process, the array carbon nanotube / high polymer composite reinforcing sheet is used as a preset sheet; the reinforcing sheet comprises array carbon nanotube film material and high polymer, and the array carbon nanotube film material comprises array carbon nanotube and low surface energy polymer; and the thickness of the reinforcing sheet is 2 microns to 2 millimeters. The array carbon nanotube / high polymer composite reinforcing sheet is used as a preset sheet, the preset sheet has excellent rigidity and impact toughness, and compared with the preset reinforcing sheet of non-thermoplastic resin material in the market, the compatibility is greatly improved, and the array carbon nanotube / high polymer composite reinforcing sheet has wide market prospect in the field of polymer foaming technology.

The invention belongs to the technical field of conductive films, and relates to a fluoroplastic conductive composite film and a preparation method and application thereof. The film comprises an array carbon nanotube film-like material and a fluoroplastic film which are compounded with each other, the array carbon nanotube film-like material comprises array carbon nanotubes and a low surface energy polymer; and the content of the array carbon nanotubes in the thin film is 0.01-5% by weight. The fluoroplastic composite film disclosed by the invention can obtain good conductivity under the condition that the addition amount of the carbon nanotubes is extremely small, and has good tensile strength at the same time.

The invention belongs to the technical field of films for packaging, and relates to an array carbon nanotube polyamide composite material and a biaxially oriented polyamide film as well as a preparation method and application thereof. The composite material comprises an array carbon nanotube membranous material and polyamide which are compounded with each other, the array carbon nanotube film-like material comprises array carbon nanotubes and a low surface energy polymer; the content of the array carbon nanotubes in the composite material is 0.01-1 wt%. The conductive film provided by the invention can obtain good conductivity under the condition that the addition amount of the carbon nanotubes is extremely small. In addition, the film also has good bidirectional tensile strength and good barrier property. Therefore, the film disclosed by the invention has a wide application prospect in the field of antistatic packaging.

The application provides a membrane capacitive deionization module for treating high magnesium-lithium ratio brine, a preparation method and application thereof. The magnesium-lithium ratio of the brine is 300-700. The preparation method comprises the following steps: firstly, mixing pickling lithium titanate molecular sieves, a binder, a conductive agent and a solvent, ball milling, coating the obtained slurry on the surface of a whisker carbon nanotube membrane to form a coating layer, and then taking the whisker carbon nanotube membrane including the coating layer as an electrode to assemble the membrane capacitive deionization module. The weight ratio of the pickling lithium titanate molecular sieves to the whisker carbon nanotube membrane is 1:(2-4). The membrane capacitive deionization module of the application realizes efficient adsorption of lithium ions by using the high selectivity of the pickling lithium titanate molecular sieves, uses the whisker carbon nanotube membrane as a current collector, simplifies the module structure by using the high conductivity and large specific surface area of the whisker carbon nanotube membrane, promotes the rapid transmission of electric charges and the uniform adsorption of lithium ions, and is suitable for brine treatment, especially for high magnesium-lithium ratio brine.

Methods for removing a catalyst particle from a nanotube film used in a photolithographic patterning process are disclosed. The catalyst particle is identified based on its size in the nanotube film. This identification can be done using an inspection device such as a confocal microscope, which permits comparison of images taken in two or more separate focal planes to determine the size of particles. The catalyst particle is then exposed to a first absorption wavelength using a laser, which is selectively absorbed by the catalyst particle and which heats the catalyst particle to remove the catalyst particle from the nanotube film. Optionally, the catalyst particle-free nanotube film can be further exposed to a second absorption wavelength which is selectively absorbed by the film and promotes repair of the film. The resulting nanotube film can be used in a pellicle membrane.

The application provides a carbon nanotube film and a continuous preparation device system and method thereof, the continuous preparation device system comprises a first unwinding roller, a vacuum forming system, a pressing roller, a drying device and a first winding roller connected in sequence; a mortar spraying device is arranged above the vacuum forming system; the mortar spraying device is connected with a mortar distribution system, a defoaming device and a carbon nanotube dispersion liquid storage tank in sequence; the pressing roller is independently connected with a second unwinding roller and a second winding roller respectively; the vacuum forming system is used for suction filtration forming of the carbon nanotube dispersion liquid to form a porous substrate-carbon nanotube film; the pressing roller is used for lamination of the lamination of the substrate and the porous substrate-carbon nanotube film, and the carbon nanotube film is transferred from the porous substrate to the lamination substrate. The continuous preparation device system and method provided by the application realize continuous preparation of the carbon nanotube film which is coiled, self-supporting and excellent in performance.

The invention belongs to the technical field of high polymer materials, and relates to a thermoplastic resin foamed bead forming body and a preparation method thereof. The forming body comprises a thermoplastic resin matrix and an array carbon nano tube / high-molecular composite reinforced sheet, the array carbon nano tube / high-molecular composite reinforced sheet comprises an array carbon nano tube film-like material and a high-molecular polymer which are compounded with each other, and the array carbon nano tube film-like material comprises array carbon nano tubes and a low-surface-energy polymer; the content of the array carbon nanotube / polymer composite reinforced sheet in the forming body is 0.05-60% by weight; and the thickness of the array carbon nanotube / polymer composite reinforced sheet is 2 [mu] m to 2 mm. According to the invention, various physical properties of the product can be obviously improved through preset sheet reinforcement.

Embodiments of the present application provide a foil structure with carbon nanotubes, a method for manufacturing the foil structure, a cold cathode, and an X-ray tube. The foil structure includes a metal substrate having a first surface and a first side perpendicular to the first surface, the first side being located at an edge of at least one side of the metal substrate; a bonding layer located on the first surface of the metal substrate; and a plurality of carbon nanotubes located on the first surface of the metal substrate, wherein the bonding layer is configured to enhance a bonding strength between the metal substrate and the plurality of carbon nanotubes, the plurality of carbon nanotubes includes a carbon nanotube film located on the first surface and a plurality of discrete carbon nanotubes, at least a portion of the plurality of discrete carbon nanotubes is located on the first surface near the first side, at least another portion of the plurality of discrete carbon nanotubes is located outside the carbon nanotube film and has a projection on the metal substrate located outside the first surface, and the at least another portion of the plurality of discrete carbon nanotubes protrudes in a direction away from the metal substrate relative to the first side.

The invention belongs to the field of polymer composite materials, and relates to a silicone rubber flexible conductive film and a preparation method and application thereof. The thin film comprises an array carbon nanotube film-like material and silicone rubber which are compounded with each other, the array carbon nanotube film-like material comprises array carbon nanotubes and a low surface energy polymer; and the content of the array carbon nanotubes in the thin film is 0.01-10% by weight. The conductive film provided by the invention can obtain good conductivity under the condition that the addition amount of the carbon nanotubes is extremely small, and has good tensile strength at the same time.

Methods for preparing a nanotube membrane for use in a pellicle membrane using dry printing are disclosed. Nanotube fibers are produced in a reaction vessel and dry sprayed onto a filter to form the nanotube membrane. The thickness of the nanotube membrane can be controlled by moving the reaction vessel and the filter relative to each other, or by further processing to reduce the thickness of the layer deposited onto the filter. This method reduces the number of process steps, reducing overall production time, and can also be used to produce larger membranes. The pellicle membrane can be formed with multiple layers and has a combination of high transmittance, low deflection, and small pore size. A conformal coating may applied to an outer surface of the pellicle membrane to protect the pellicle membrane from damage that can occur due to heat and hydrogen plasma created during EUV exposure.

The application provides a flexible carbon nanotube-copper composite film and a preparation method thereof, and relates to the technical field of carbon nanometer materials. In the application, a first carbon nanotube film is first immersed in mixed acid liquid and washed to be neutral to prepare a second carbon nanotube film; then, the second carbon nanotube film is immersed in a sensitization liquid and washed to be neutral to prepare a third carbon nanotube film; then, the third carbon nanotube film is immersed in an activation liquid and washed to be neutral to prepare a fourth carbon nanotube film; finally, the fourth carbon nanotube film is immersed in a copper plating liquid and a reducing agent is added to react, so that copper is plated on the surface and inside of the fourth carbon nanotube film, thereby preparing the flexible carbon nanotube-copper composite film. The flexible carbon nanotube-copper composite film has the characteristics of ultra-thin and excellent flexibility, and has high conductivity and excellent and stable electromagnetic shielding efficiency, and the preparation cost is reduced.

The present invention provides a positive electrode slurry composition, a positive electrode, a method for manufacturing the same, and a lithium secondary battery, wherein by adding a cellulose-based additive to the positive electrode slurry composition, the dispersibility of carbon nanotubes is improved, and even after the drying process during positive electrode manufacturing, carbon nanotubes remain uniformly dispersed within the positive electrode while suppressing the development that causes carbon nanotubes to accumulate in a part of the positive electrode and form a carbon nanotube film, and carbon nanotubes are selectively and uniformly coated onto the surface of the positive electrode active material during the positive electrode manufacturing process without having to perform the conventional process of coating the positive electrode active material with carbon nanotubes separately. [Solution] The present invention relates to a positive electrode slurry composition, a positive electrode, a method for producing the same, and a lithium secondary battery, wherein the positive electrode slurry composition contains a lithium nickel-based composite oxide and comprises a positive electrode active material in the form of secondary particles formed by the aggregation of a plurality of primary particles, carbon nanotubes, and a cellulose-based additive.