31results about How to "Uniform distribution of fibers" patented technology

The invention discloses a tungsten-based plasma facing material and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing tungsten powder and tungsten fiber by a powder mixing method which does not damage the tungsten fiber; and sintering to prepare a bulk fiber toughened tungsten-based material by a hot isostatic pressing process. The tungsten powder is one of pure tungsten powder, tungsten-rhenium alloy powder, and tungsten powder doped with carbide and oxide; and the tungsten fiber is a pure tungsten wire, a tungsten-rhenium alloy wire or the like. The tungsten-based plasma facing material has the advantages of high thermal conductivity, high melting point temperature, low sputtering yield, low hydrogen isotope retention and low vapor pressure, as well as low cost and greater toughness.

A composite flywheel rim has multiple fiber layers in each of a plurality of radially contiguous zones. The layers in the intermediate zones each have a mixture of carbon fiber tows and glass fiber tows. The ratio of carbon fiber tows to glass fiber tows in each layer of any single zone is constant and the ratio incrementally increases zone-by-zone radially toward the outside of the rim, and the distribution of carbon fiber tows is macroscopically uniform in each zone. The flywheel rim is made by winding a band of fiber tows, impregnated with wet resin, onto a mandrel. The macroscopically uniform distribution can be achieved by controlling the correlation between lead rate of the fiber band as it is wound onto the mandrel per mandrel revolution and the winding length. Carbon fiber tow spacing and position in the band, and a width of a carbon fiber tow also affect the lay up pattern, however, the most effective and the easiest way to change the lay up pattern with constant parameters is by controlling the winding length.

The invention discloses a preparation method for a carbon fiber annular cathode. The carbon fiber annular cathode is made through directly installing and clamping a fashioned carbon fiber annular cathode material on a cathode base and the fashioned carbon fiber annular cathode material is made through bending a carbon fiber sheet cathode material to an annular shape along the length direction. The carbon fiber sheet cathode material is of a three-layer composite sandwich-type structure, and the three-layer composite sandwich-type structure comprises two metal foil sheets on the outer sides and carbon fiber cloth clamped between the two metal foil sheets. By means of the preparation method for the carbon fiber annular cathode, the carbon fiber annular cathode is enabled to have strong designability, evenly distributed carbon fibers along the axial direction of an electron emission end guarantee the directionality and uniformity of emitted electrons. The preparation method for the carbon fiber annular cathode is simple in technique, low in cost, high in operability and capable of meeting emission requirements on property of different electrons.

The invention discloses raw tipping paper capable of reducing injuries and resisting oxidization. The raw tipping paper is characterized by being prepared from following raw materials in parts by weight: 40-45 parts of cotton pulp, 52-56 parts of softwood pulp, 0.7-1 part of tocopheryl acetate, 2-3 parts of ethanol, 0.8-1.1 parts of tween-600, 0.6-0.8 part of sodium hydrogen carbonate, 0.3-0.6 part of nano-selenium, 3-5 parts of asparaguses, 2-4 parts of garcinia mangostana peels, 4-6 parts of portulaca oleracea, 0.5-0.7 part of moringa oil, 1-2 parts of sodium alginate, 1-1.4 parts of locust bean gum, 2-3 parts of cationic starch, 3-4 parts of diatomite, 1-2 parts of an auxiliary agent and suitable amount of water. According to the raw tipping paper, a glue application degree is moderate and the tensile strength is great; the raw tipping paper cannot be cracked easily and has uniformly-distributed fibers; tocopheryl acetate, moringa oil and the like which have strong oxidization-resisting components are added; the nano-selenium can be used for removing free radicals in a human body so as to reduce injuries to the human body caused by tar, carbon monoxide and the like in cigarettes.

The invention discloses a milky sweet flavor characteristic of cordyceps for cigarette tipping paper, which comprises the following components in parts by weight: 1-10 parts of cordyceps extract, 10-30 parts of vanillin, 1-5 parts of heliotropin, 0.1-0.5 parts of dihydrocoumarin, 10-35 parts of 95% ethanol and 20-80 parts of propylene glycol. The milky sweet cigarette tipping paper with cordycepscharacteristics is the milky sweet flavor with cordyceps characteristics added to a printing ink. The preparation method comprises the following steps: the raw materials of cordyceps sinensis are crushed, refluxed and concentrated to obtain cordyceps extract; all the components are mixed according to the volume ratio, and fully stirred; the milky sweet flavor is added into the printing ink of thecigarette tipping paper, the printing ink is printed onto the tipping paper base paper, and then the milky sweet and fragrant cigarette tipping paper with the characteristics of the cordyceps is obtained through the processes of gilding, slitting and punching. In the method, the soft and comfortable milky sweet aroma style is imparted to the cigarette, the suction quality is improved, the smoke issoft and comfortable, the taste is improved, the delicate smoke is improved, at the same time, the pharmacological and healthcare effects of the cordyceps are provided, so that the comprehensive quality and the safety of the cigarette are improved.

The invention discloses a preparation method of a chopped carbon fiber reinforced photosensitive resin. The method comprises the following steps: (a) performing ball milling on the chopped carbon fiber with a small amount of nano silica, a coupling agent, an acrylate oligomer to obtain a first mixture; (b) stirring the first mixture with the acrylate oligomer, a reactive monomer, an anti-settlingaid and an anti-foaming agent to obtain a second mixture; and (c) oscillating the second mixture to prepare the photosensitive resin finished product. The method has the following beneficial effects:the chopped carbon fiber is evenly distributed in the photosensitive resin, and a photo-curable rapid-formed chopped carbon fiber reinforced photosensitive resin-based composite material is prepared;and the chopped carbon fiber has a relatively high proportion in the photosensitive resin, and the dispersion effect is good, so that a high-toughness resin product with uniform fiber distribution canbe obtained in the layer-by-layer photo-curing shaping process of the photosensitive resin, mechanical properties are good, and application prospects are broad.

The invention relates to a miniature combing device used for an artificial fur machine and provided with a multi-speed working roll. The technical problem is solved that an existing combing device isnot uniform in disperse fiber distribution during combing. The miniature combing device is provided with a fur feeding roller, a cylinder, a doffer and a new working roll assembly, wherein the new working roll assembly is provided with two or more roll segments, and all the roll segments can rotate at different rotating speeds. The miniature combing device can be widely applied to combing of fibers roved into wool tops into the disperse fibers.

The invention provides a preparation method of fiber-reinforced thermoplastic composite filaments for 3D printing, and belongs to the technical field of 3D printing. The preparation method comprises the following steps of firstly spreading carbon fiber tows, then preheating the fiber tows, performing fiber and thermoplastic resin impregnating, and finally sizing, cooling and rolling through a sizing mold to obtain the continuous fiber 3D printing filaments. By means of the preparation method, the continuous fiber composite 3D printing filaments are prepared by homogenizing the fiber tows through thermoplastic resin, the composite filaments have the advantages of high strength and high modulus, and a prepared 3D printing sample piece has the advantages of high mechanical property and the like. The method can be used for efficiently and continuously preparing the 3D printing filaments.

The invention provides a novel artificial fur weaving machine which comprises a machine body, a yarn conveyer, a combing device, a weaving device, a cloth coiling device and a main control motor, wherein the yarn conveyer, the weaving device and the cloth coiling device are driven by the main control motor to operate; the combing device comprises a driving platform and a plurality of combing headswhich are connected with the driving platform; each combing head comprises a plurality of working wheel groups; each group of the working wheel groups of same functions are connected with one power device and are driven by the power device to move; the power devices are independent from one another. According to the novel artificial fur weaving machine provided by the invention, structures and transmission modes inside the combing heads can be changed, the transmission speed ratios of the working wheels can be independently adjusted, linear adjustment can be achieved, then weaving at an optimal speed ratio can be implemented according to fur strips of different types, different specifications and different fiber lengths, the adaptability to different raw materials can be improved, and theproblem of ghosting images caused by uneven fiber distribution can be finally solved.

The invention relates to a corn fiber ecological mask spunlaced material and a preparation method thereof, belonging to the technical field of non-woven materials. The corn fiber ecological mask spunlaced material is characterized by being prepared from 100% corn fibers, wherein the specification of the corn fibers is 12mm*1.6D. The corn fiber ecological mask spunlaced material is soft and smooth, has good hygroscopicity and breathability, good fitness with the skin, high strength and small thickness, is fully degradable and is uniform in fiber distribution. The preparation method of the corn fiber ecological mask spunlaced material has the advantages of short process flow, low defective rate and high production efficiency.

The invention discloses an asphalt mixture stirring device capable of automatically feeding fibers, fibers in a fiber asphalt mixture are uniformly distributed, and performance variability of the mixture is low. The invention discloses an asphalt mixture stirring device capable of automatically feeding fibers. The asphalt mixture stirring device comprises a liftable platform (6) with a supporting arm (8), a heating and stirring pot (61) arranged on the liftable platform (6), and a stirring blade (7) of which an upper end is connected with a gearbox (9) arranged at an upper end of the supporting arm (8), wherein a fiber bin (4) and a fiber stirring cavity (1) are further arranged at an upper end of the supporting arm; an upper opening of the fiber stirring cavity (1) is connected with a lower opening of the fiber bin (4), and a lower opening of the fiber stirring cavity (1) faces an upper opening of the heating and stirring pot (61); a fiber stirring blade (3) is arranged in the fiber stirring cavity (1), and an upper end of the fiber stirring blade (3) is connected with a fiber stirring motor (2).

The invention discloses a preparation method of a novel seedling bed. The preparation method comprises the following steps: preparing a mixed raw material from the following raw materials in parts by weight: 25-35 parts of ferrotitanium stone, 35-45 parts of basalt, 5-8 parts of limestone, 3-5 parts of slag, 20-30 parts of coke and 3-5 parts of auxiliary materials; feeding the mixed raw material to a cupola furnace, fusing into magma, forming fibers, collecting cotton, and laying cotton; pressing on a three-dimensional cotton presser; and solidifying and trimming, so as to prepare the novel seedling bed. The novel seedling bed prepared by adopting the method has black to black brown color similar to the color of soil, and has a good mechanical property.