2513results about How to "Reduce reunion" patented technology

Nano-wires, preferably of less than 20 nm diameter, can be formed with minimized risk of narrowing and breaking that results from silicon atom migration during an annealing process step. This is accomplished by masking portion of the active layer where silicon atomer would otherwise agglomerate with a material such as silicon dioxide, silicon nitride, or other dielectric that eliminates or substantially reduces the silicon atom migration. Nano-wires, nanotubes, nano-rods, and other features can be formed and can optionally be incorporated into devices, such as by use as a channel region in a transistor device.

The present invention relates to antimicrobial compositions, methods for the production of these compositions, and use of these compositions with medical devices, such as catheters, and implants. The compositions of the present invention advantageously provide varying release kinetics for the active ions in the compositions due to the different water solubilities of the ions, allowing antimicrobial release profiles to be tailored for a given application and providing for sustained antimicrobial activity over time. More particularly, the invention relates to polymer compositions containing colloids comprised of salts of one or more oligodynamic metal, such as silver. The process of the invention includes mixing a solution of one or more oligodynamic metal salts with a polymer solution or dispersion and precipitating a colloid of the salts by addition of other salts to the solution which react with some or all of the first metal salts. The compositions can be incorporated into articles or can be employed as a coating on articles such as medical devices.

Nano-wires, preferably of less than 20 nm diameter, can be formed with minimized risk of narrowing and breaking that results from silicon atom migration during an annealing process step. This is accomplished by masking portion of the active layer where silicon atomer would otherwise agglomerate with a material such as silicon dioxide, silicon nitride, or other dielectric that eliminates or substantially reduces the silicon atom migration. Nano-wires, nanotubes, nano-rods, and other features can be formed and can optionally be incorporated into devices, such as by use as a channel region in a transistor device.

A stabilized solid controlled release dosage form having a coating derived from an aqueous dispersion of ethylcellulose is obtained by overcoating a substrate including a therapeutically active with an aqueous dispersion of ethylcellulose and then curing the coated substrate at a temperature and relative humidity elevated to a suitable level above ambient conditions until the coated dosage form attains a stabilized dissolution profile substantially unaffected by exposure to storage conditions of elevated temperature and / or elevated relative humidity.

The invention discloses a preparation method of graphene-containing water-based electrothermal film. The method comprises the following steps of: (1) carrying out hydrophilization treatment on graphene, then adding solutions of cellulose derivatives as a dispersing agent and a thickening agent, and carrying out pre-dispersion; (2) adding an auxiliary agent into the pre-dispersed graphene, and dispersing to obtain homogeneous dispersion liquid; (3) adding an adhesive into the homogeneous dispersion liquid, and mixing to obtain graphene-containing electrothermal film slurry; and (4) coating a film formation carrier with the graphene-containing electrothermal film slurry to form a graphene conducting layer, and drying to obtain the graphene-containing electrothermal film formed by the graphene conducting layer and the film formation carrier. After the preparation method is adopted, a heating body having excellent heat conduction and electric conduction properties can be prepared.

The invention belongs to the technical field of carbon fiber materials, and particularly discloses a molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material and a preparation method therefor. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material is prepared by growing a molybdenum disulfide nanosheet on a nitrogen-doped carbon fiber with a three-dimensional network structure in situ by taking molybdenum salt and sulfosalt as precursors; A preparation process for the molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material comprises: preparing the nitrogen-doped carbon fiber through in-situ oxidization-reduction reaction, freeze-drying and high-temperature carbonization; and growing the molybdenum disulfide nanosheet on the nitrogen-doped carbon fiber in situ through a one-step solvothermal method. According to the nitrogen-doped carbon fiber prepared by the preparation method, the wettability of the carbon fiber and a solvent is improved, and more active sites are provided for growth of inorganic particles; and moreover, the electrical conductivity of the carbon fiber is greatly improved, so that the migration rate for electrons in an electro-catalysis hydrogen-evolution process is increased. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material prepared by the preparation method can be used as an ideal high-performance catalyst material and can be used for the electro-catalysis hydrogen-evolution field.

The invention relates to a granular material for 3D binder printing, said granular material consisting of particles provided with an externally non-polar surface layer (2). The invention also relates to a method for producing a granular material for 3D binder printing, whereby a surface layer (2) having a non-polar outer side is applied to initial particles (1), and to a method for producing an object consisting of the inventive granular material, according to which a layer of the inventive granular material is applied to a base, and pre-determined regions (3) of said layer are moistened with a binding fluid, said binding fluid being selected from fluids in which a surface layer of the particles of the granular material is soluble. The invention further realties to objects consisting of interconnected particles of the inventive granular material. The invention enables a very precise printing process.

The invention relates to a preparation method of a functional polyester fiber. The preparation method comprises the following steps: performing esterification by stages, wherein dihydric alcohols, polyhydric alcohols and functional inorganic powder are mixed according to a certain mole ratio, in the first esterification stage, acid is slightly excess to ensure that monomers with low capability of participating in esterification reaction in the polyhydric alcohols fully react and are grafted into polyester molecular chains, and in the second esterification stage, the dihydric alcohols are replenished to control the terminal carboxyl group of copolyester. The preparation method has the advantages that polyhydric functional groups can improve the apparent viscosity of a system and play a role in wrapping the introduced functional inorganic powder (such as far infrared ceramic inorganic powder, titanium dioxide powder and zinc oxide antibacterial powder), thus improving the dispersion uniformity of particles; settlement is unlikely to happen in the polymerization process and then functional polyester is prepared through condensation polymerization; the functional polyester fiber is finally prepared by carrying out melt spinning on the prepared polyester, has good moisture absorption property and flexibility and can be widely used for preparing far-infrared moisture absorbing and sweat releasing antistatic and antibacterial fabrics next to the skin.

The present invention discloses a method of dispersing cyclodextrins into a base polymer. The method of the invention comprises reacting grafted microfine polymer powder with a cyclodextrin to form a cyclodextrin-attached grafted polymer, and mixing the cyclodextrin-attached grafted polymer and the base polymer for a sufficient time that the cyclodextrin-attached grafted polymer is dispersed within the base polymer. The present invention also provides several cyclodextrin-inclusion complex products formed by the method of the invention. This products include an antimicrobial polymer blend, a fragrant polymer blend, and a dyed polymer blend.

A process for preparing nm-class zirconium oxide with controllable size (less than 30 nm) includes preparing two portions of microsuspension containing non-ionic surfactant, n-hexanol, cyclohexane and zirconium salt solution or amminia water, mixing, hydrolysis reaction, centrifuging or filtering, washing with alclohol and water several times, drying and calcining. It features that its size can be controlled by controlling the content of zirconium solution or ammonia water, the ratio of water to surfactant and reaction temp.