1711results about How to "Uniform texture" patented technology

A substrate for artificial leather comprising a nonwoven fabric of bundles of microfine filaments. The substrate for artificial leather simultaneously satisfies the following requirements 1 to 4: (1) the bundle of microfine filaments comprises 8 to 70 microfine filaments having a cross-sectional shape of nearly circle; (2) the bundle of microfine filaments has a cross-sectional area of 170 to 700 μm² and a flatness of 4.0 or less; (3) on a cross section parallel to a thickness direction of the nonwoven fabric body, cross sections of the microfine fiber bundles exist in a density of 1500 to 3000/mm²; and (4) on a cross section parallel to a thickness direction of the nonwoven fabric body, gaps between the microfine fiber bundles have a size of 70 μm or less. By satisfying the requirements, the substrate for artificial leather combines high level of sensuous qualities and high level of physical properties which have been considered to be mutually exclusive.

The invention provides a compound fermented beverage containing red tea fungus and a preparation method thereof, and relates to a health beverage formula and a processing method thereof. The invention is characterized in that the health beverage is made by fermentation of apple juice, carrot juice and lemon juice with red tea fungus as effective microorganisms in a culture medium composed of tea,sugar and water with certain proportion. The proportions of the ingredients are as follows: 5% to 40% of apple juice, 5% to 40% of carrot juice, 0.5% to 5% of lemon juice, 10% to 45% red tea fungus inoculum and the balance of sugared tea infusion. The fermentation time is 4 to 10 days, and the fermentation temperature is 25 to 35 DEG C. The beverage is golden yellow in color and clear, has a moderate sweetness and a mild sourness, and has a unique taste. The beverage is rich in both fruit and carrot nutrients and nutrients resulting from biofermentation, has alcohol and ester flavors, and also has the functions of medical and health care.

A carbon nanotube paper is prepared from carbon nanotubes through adding them to acid, heating or thermal reflux, and/or ultrasonic stirring, removing impurity, diluting in water, filtering, washing the filtered cake, dispersing the carbon nanotubes in water by ultrasonic stirring, spreading on carrier, and drying. It has regular structure, high uniformity, purity and electric conductivity, and enough mechanical strength.

The invention discloses a vacuum infusion forming method for a carbon fiber composite structure member. The method comprises the steps as follows: making a large-size carbon fiber composite wind power blade structure member by a vacuum infusion forming technology; bonding and fixing a guide net to a mould by a transparent double-sided tape for preventing deformation of carbon fiber fabrics due to deformation of the guide net to guarantee that carbon fiber sheet is consistent in orientation so as to obtain a composite structure member with higher mechanical performance; preheating a resin mixing solution with a carbon fiber preforming body at first to guarantee the resin mixing solution to be quickly infused in a low-viscosity state; and sealing the upper surface of the carbon fiber preforming body with a unidirectional breathable film to form a surface breathable channel, and enabling the resin mixing solution to permeate from surface and to fill fully under vacuum, thus completing the vacuum infusion forming process. The method is suitable for the carbon fiber fabrics which are shaped by hot melting lines and have different surface densities; and compared with the carbon fiber prepreg forming process, the method has the advantages of long material availability period, high process stability and low product cost, and is favorable for popularization and application.

The invention provides a polylactic resin composition film and a preparation method thereof, and relates to the field of plastic processing. The polylactic resin composition film comprises the following components: 100 weight parts of polylactic resin and 0.5 to 5.5 weight parts of functional filler which are blended, wherein the polylactic resin has the weight-average molecular weight of 80,000-300,000 and the molecular weight dispersibility of 1.5-2.2; and the functional filler is at least one of the following inorganic fillers: calcium carbonate, clay, silica, alumina, barium sulfate, calcium sulfate, talc, magnesium sulfate, titanium dioxide, zeolite, aluminum sulfate, kieselguhr, kaolin, calcium oxide and magnesium oxide. The preparation method comprises the following steps of: melting, blending and granulating the components in the proportion, casting and pressing, and biaxially tensioning to obtain the polylactic resin composition film. The film is completely biodegradable, has balanced rigidity and toughness, maintains the tensile strength, has the elongation at break improved by 3 to 7 times compared with the original elongation at break, and has uniform texture, high decorative property, high printing property and unidirectional tearing property.

The present invention is directed to a custom-contoured cushion for a wheelchair or other seating device and a method of making the same. In one embodiment, the novel custom-contoured cushion is comprised of a stretchable bag filled with soft and resilient closed-cell foam pellets adhered together by and/or embedded within an elastomeric polymerizable adhesive. The pellets do not absorb a significant amount of the adhesive and, after molding, remain sufficiently soft and resilient to provide a comfortable and durable cushion. Alternatively, the cushion contains soft and resilient pellets, but does not contain the elastomeric polymerizable adhesive. In the first embodiment, the custom-molded, custom-contoured cushion is made by mixing the pellets with the adhesive to form a pellet/adhesive mixture, positioning the user on a bag filled with the pellet/adhesive mixture, molding the mixture around the user to provide cushioning around the user's seating surface, and allowing the adhesive to cure. The pellets and adhesive may either be added to the bag separately and mixed within the bag, or may be mixed outside the bag, after which the pellet/adhesive mixture is added to the bag.

The hard alloy carburizing process resulting in gradient distributioin of mechanical performance includes the steps of preparing carburizing agent, loading into boat and carburizing treatment. The carburizing agent consists of Al2O3, graphite grain, and carbonate and/or bicarbonate in certain proportion and mixed together. During the carburizing treatment, carbonate and/or bicarbonate are decomposed into CO2, CO2 is then reacted with graphite to produce relatively active CO, and CO enters to liquid phase and reacts with eta phase to produce WC while immigrating inwards and to speed the formation of gradient structure inside the alloy. The present invention has the features of relatively low carburizing temperature, high comprehensive mechanical strength formed, short carburizing time, etc.

The invention relates to a shading belt which comprises a light shielding layer and an adhesive layer, and is characterized in that: the light shielding layer is black polyethylene terephthalate thin layer; the adhesive layer is two sided tape and is composed of a substrate layer and adhesive agent layers at two sides; the adhesive layer is fixedly connected with the surface of the light shielding layer by an adhesive layer on the same surface; the two sided tape is compounded on one side or two sides of the black PET thin layer, thus forming light shielding single side tape or light shielding two sided tape. The thickness of the light shielding tape can be adjusted by choosing PET films with different thicknesses and the two sided tapes with different thicknesses, which avoids the adjustment of the thickness of the light shielding tape by using a large amount of glue, and avoids the glue-spilling phenomenon in die-cutting.

The present invention discloses a fiber cotton and its production method. It is made up by using 10%-80% of low melting point fiber and 90%-20% of other fiber as raw material through the processes of opening, carding, forming, baking and bonding, rolling, fast cooling, setting, cutting and packaging.

The invention discloses a polysulfonamide nanofiltration or reverse-osmosis composite membrane, and a preparation method thereof. the preparation method for the polysulfonamide nanofiltration or reverse-osmosis composite membrane comprises the following steps: pretreatment of a porous supporting membrane; alternate layer-upon-layer assembling of a sulfonyl chloride organic-phase solution and a polyamine water-phase solution on the surface of the porous supporting membrane via reaction; heat treatment; etc.; wherein heat treatment can be carried out during or after layer-upon-layer assembling. Nanoparticles, a surfactant, a catalytic acid absorbent or catalyst, a pore forming agent and other additives are added into the sulfonyl chloride organic-phase solution and the polyamine water-phase solution. The polysulfonamide nanofiltration or reverse-osmosis composite membrane prepared by using the method has improved desalination performance and acid resistance, smoother surface and lower roughness compared with composite membranes prepared through traditional interfacial polymerization, and has good application prospects in the fields of nanofiltration and reverse osmosis.

This invention provides self-clocking glyph shape codes for encoding digital data in the shapes of glyphs that are suitable for printing on hardcopy recording media. Advantageously, the glyphs are selected so that they tend not to degrade into each other when they are degraded and/or distorted as a result, for example, of being photocopied, transmitted via facsimile, and/or scanned-in to an electronic document processing system. Moreover, for at least some applications, the glyphs desirably are composed of printed pixel patterns containing nearly the same number of ON pixels and nearly the same number of OFF pixels, such that the code that is rendered by printing such glyphs on substantially uniformly spaced centers appears to have a generally uniform texture. In the case of codes printed at higher spatial densities, this texture is likely to be perceived as a generally uniform gray tone. Binary image processing and convolution filtering techniques for decoding such codes also are disclosed, but this application focuses on the codes.

The invention relates to a precoated sand for a casting field, in particular to a 3D printing precoated sand. The 3D printing precoated sand comprises the following components: 5-8 wt% of cashew nut shells, 1-2 wt% of melamino-formaldehyde resins, 1-5 wt% of cashew nut shell liquid modified phenolic resins, 0.6-0.8 wt% of urotropin, 0.1-0.4 wt% of lubricant, 0.1-0.8 wt% of binding agents, 0.1-0.4 wt% of coupling agents, 0.5-1 wt% of dispersing agents, and the balance of crude sands. The prepared 3D printing precoated sand has high strength, high-temperature resistance, low gas generating amount and low expansion rate.

The invention discloses a solar blind ultraviolet photoelectric detector based on an amorphous gallium oxide film and a preparation method thereof, and belongs to the technical field of photoelectricdetectors. The method comprises the steps that the crystal face (0001) Al2O3 is adopted as a substrate, and the substrate is cleaned; then, the cleaned substrate is fed into a settling chamber, a radio frequency magnetic control sputtering technology is applied to the substrate to grow a gallium oxide film; finally, a hollow interdigital mask plate is used for shielding on the amorphous gallium oxide film, a direct current magnetic control sputtering method is adopted for sputtering an interdigital metal electrode on the interdigital mask plate to obtain the solar blind ultraviolet photoelectric detector, the structure is an MSM type sandwiched structure, and the Al2O3 substrate, the amorphous gallium oxide film material and the Ti/Au interdigital metal electrode are arranged from bottom to top. The manufacturing technology is simple, the repeatability is good, dark current is small, the stability is high, the response speed is high, the ultraviolet visible restrain ratio is high, andthe detector conforms to the energy-saving and emission-reducing theory, is suitable for large-scale production, and has the wide development prospect.

The invention discloses a raw material composition for a graphite-silicon carbide crucible. The raw material composition comprises the following raw materials in percentage by weight: 40% to 50% of flake graphite, 20% to 50% of silicon carbide, 4% to 10% of elemental silicon powder, 1% to 5% of boron carbide powder, and 5% to 15% of clay. The manufacturing process of the graphite-silicon carbide crucible comprises the following steps: mixing raw materials evenly, and manufacturing qualified mud materials; loading the qualified mud materials into moulds, putting the moulds into an isostatic press cylinder, and pressing and shaping; demoulding, drying blanks, and coating anti-oxidation glaze when the blanks are hot; then burning the blanks in a naked manner so that the glaze is melted into glass glaze; inspecting, and when burned blanks are qualified, obtaining finished products. The process disclosed by the invention is simple; the prepared crucible is uniform in texture, large in density, low in air hole rates, high in heat conduction, and strong in corrosion resistance; in addition, the clay is used as bonding agents, so that the situation that phenolic resin or tar, as the bonding agents, is decomposed to release harmful smoke in the course of sintering to pollute environment is avoided.