31results about How to "Control permeability" patented technology

The invention discloses a single/multi-layer magnetic conductive sheet for wireless charging and a preparation method thereof. The single-layer magnetic conductive sheet comprises a layer of magnetic slice. Multiple strips of cracks are uniformly distributed on the slice and divide the slice into multiple fragment units. Gaps of the cracks are filled with insulation medium, so fragment units on two sides of the cracks are mutually insulated. The single-layer magnetic conductive sheet also comprises a double-faced adhesive tape which is adhered to one face of the magnetic slice. A protection film formed by the insulation medium is formed on the other face of the magnetic slice. The preparation method comprises steps of heat treatment, adhesion of the double-faced adhesive tape, crack processing, gum dipping processing and drying and curing processing. According to the invention, inductance value and quality factor of a charging coil are increased, charging efficiency is increased and loss is reduced. The continuously prepared magnetic conductive sheet is characterized by controllable magnetic conductivity, continuous production, convenient operation and simple insulation processing.

The invention discloses a sun-shading composite material with extinction and high flame-retardant effects. The composite material is a fabric comprising warps and wefts, wherein the fabric is woven by covering threads, rectangular or square gaps are left among the wefts, and the porosity of the composite material is 2-5%; the covering threads are made of a polyvinyl chloride composite material coating the surfaces of polyester fibers, the polyvinyl chloride composite material has the extinction and high flame-retardant effects and the covering threads are 0.3-0.5mm in diameter. The invention also provides a preparation method of the composite material. The sun-shading composite material has the characteristics of sunshading, ultraviolet ray resistance, inflaming retarding, high color fastness and the like of similar sun-shading composite materials, and also has the advantages of low glossiness, glare control, softness, comfort for eyes, fine and smooth handfeel and good breathability, and therefore, the sun-shading composite material can be well applied to the fields of leisure, fashion and individuation.

The invention discloses a pigment type neutral ink and a production method thereof. The pigment type neutral ink comprises the following raw materials by weight percentage: 15-40% of color paste, 15-40% of wetting agent, 1-3% of pH regulator, 0.1-2.0% of antibacterial bacteriostatic agent, 0.5-5.0% of surfactant, 0.5-3.0% of rheology assistant, 0.1-1.0% of defoamer, 2-10% of resin, 0.1-1.5% of corrosion inhibitor, 0.3-2.5% of lubricant and the balance of de-ionized water, wherein the color paste is a water-based color paste, and the formula of the water-based color paste includes 18-35% of pigment, 1-12% of surfactant, 0.2-3.0% of pH regulator, 0.1-2.0% of antibacterial bacteriostatic agent, 0.05-1.0% of defoamer, 3-15% of wetting agent and the balance of de-ionized water. The pigment type neutral ink has excellent moisture preservation and lubrication properties, and thereby guarantees continuity and fluency of writing; and the pigment type neutral ink is stable in performance and long in quality guarantee period.

The invention provides a microchannel plate with a fractal structure, a photocatalytic reactor and an application thereof. The microchannel plate with the fractal structure comprises a first surface and a second surface which are opposite; the first surface and the second surface of the microchannel plate with the fractal structure each is provided with a main pipeline microchannel and multistage H-shaped fractal bifurcated microchannels which are connected with one end of the corresponding main pipeline microchannel, and the H-shaped fractal bifurcated microchannels of the first surface of the microchannel plate with the fractal structure communicate with those of the second surface of the microchannel plate with the fractal structure through connecting through holes. According to the microchannel plate with the fractal structure, the photocatalytic reactor and the application thereof, through forming fractal-structured microchannels in the upper and lower surfaces of the microchannel plate with the fractal structure, three phases, i.e., gas, liquid and solid phases can be effectively distributed, heat transfer and mass transfer are strengthened, the problem in collection of reactants of fractal distribution can be effectively solved, meanwhile, the length of the microchannels can be increased, and the control on reaction flux and reactant residence time is better facilitated.

The invention relates to a semi-cemented artificial rock core model. The semi-cemented artificial rock core model is formed by a transparent organic glass tube, a quartz sand filling area at the middle portion, and sand grain cementing areas at two ends. A filling device of the semi-cemented artificial rock core model comprises a manual hydraulic pressure pump, a pressure release valve, a pressure meter, a fixed support, a solid threaded iron rod and a middle container with a stopper and an open end. The invention further provides a filling method of the semi-cemented artificial rock core model. The device and the method have the following advantages: 1, the making cost of the rock core is reduced, the technical threshold of making of the rock core is reduced, and the making efficiency of the rock core is improved; and 2, the aperture structure of the rock core is protected by the organic glass tube, so destroys of high confining pressure to the rock core and the change of the aperture structure are effectively avoided. The device has the advantages of simple structure, convenience in operation, high practicality and high simulation credibility, and the method is a novel rock core model making technology suitable for being promoted.

A process using organic micro-molecular hydrocarbon as template for preparing the organic-inorganic hybridized nanosoftgel features that the organic micro-molecular hydrocarbon-solution drops are used as template, the vinyl monomer and the siloxane containing double bonds are copolymerized, and the hydrolysis-condensating reaction of the siloxane group is used to form the cross-linked shell. Its osmosis is regulatable.

The invention belongs to the technical field of a microwave integrated circuit and device, and discloses a complementary trapezoid groove-based method for achieving an odd-mode artificial surface plasma guided wave. The dispersion characteristic of a complementary trapezoid groove structure is analyzed by an intrinsic mode method, artificial surface plasmon naturally existing in an optical frequency band is simulated, the artificial surface plasmon guided wave which has a high binding effect at a microwave frequency band and can support odd-mode transmission is designed by building an odd-modesimulated microstrip transition structure, full-wave electromagnetic simulation is performed, and an odd-mode and high-efficiency transmission effect of the artificial surface plasmon at the microwave frequency band is verified. The odd-mode artificial surface plasmon guided wave has the characteristics of high transmission efficiency, thin thickness, light mass and the like and is easy to process and has wide application prospect in the field of a novel microwave integrated circuit and device.

The invention relates to an electromagnetic field shielding case. The shielding case consists of a substrate and a shielding layer bonded on the substrate, wherein the substrate is a bonding adhesive tape or a shielding adhesive tape; the shielding layer is a flaky metal soft magnetic layer; the magnetic conductivity of the metal soft magnetic layer is 5,000Hz-150,000Hz; the metal soft magnetic layer comprises a plurality of unit grids; adjacent edges of each unit grid and adjacent unit grids of each unit grid are matched with each other; the gaps between adjacent edges is 0.001-5 micrometers; and the area of each unit grid is 0.10mm<2> to 2mm<2>. The electromagnetic field shielding case has the advantages that the eddy current loss of high-frequency electromagnetic waves can be effectively reduced after the metal soft magnetic layer shielding case is partitioned according to a certain size, so that a section of high-frequency-band electromagnetic waves has a better shielding effect. Meanwhile, high controllability is achieved, namely, the magnetic conductivity of a metal soft magnetic material can be further controlled by adjusting the sizes of the cut unit grids.

The invention discloses a preparing method for ultrathin metal powder for a 3D printing and soft magnetic paster integrated component and relates to the technical field of manufacturing of metal powder. The preparing method comprises the following steps: (1) dosing: dosing the raw materials including metal pure iron, metal chromium, metal nickel, metal cobalt and metal silicon according to a proportion; (2) smelting: placing the well-dosed raw materials in a smelting crucible to obtain solution ingredients; (3) high pressure gas atomizing: pouring the solution ingredients into a thermal insulation crucible, wherein the molten solution flows into a high pressure vacuum gas atomizing furnace by a small hole in the bottom of the thermal insulation crucible and is subjected to impact atomizingof high pressure nitrogen gas, so as to prepare the metal powder with a particle size of 10-100 micrometers; and (4) screening and annealing: grading the metal powder according to the particle size by a spin vibration sieve, and then annealing the graded metal powder to obtain a powder material. The preparing method has the advantages of improving the performances of the metal powder and controlling the parameters of the metal powder according to needs.

The invention provides a pearl traditional Chinese medicine anti-mosquito regenerated cellulose fiber and a preparation method thereof. The pearl traditional Chinese medicine anti-mosquito regenerated cellulose fiber comprises the following components in percentage by weight of 3.5-5.5 wt% of pearl powder and 2.4-4.65 wt% of compound essential oil, wherein the compound essential oil comprises 0.7-1.2% of peppermint essential oil, 0.7-1.2% of eucalyptus essential oil, 0.7-1.2% of cymbopogon citratus essential oil and 0.3-1.05% of chrysanthemum indicum essential oil. According to the preparation method of the pearl traditional Chinese medicine anti-mosquito regenerated cellulose fiber, the overall density of pearl powder can be effectively reduced, sedimentation of pearl powder particles in the spinning process is avoided, damage of strong acid and alkali to active ingredients in the post-treatment process is reduced, and a good slow-release effect is achieved; and in addition, along with volatilization of the peppermint essential oil and the like, the pearl fiber fabric is cooler and more comfortable, and the comfort of a human body in high-temperature weather such as summer and the like is improved.

The invention discloses yellow rice wine containing rich coprinus comatus polysaccharide and a processing technology thereof. The yellow rice wine is specifically prepared from the following raw materials of millet, long-shaped rice, wheat koji, coprinus comatus and red yeast. A production method comprises the steps of steaming materials, pre-fermenting, primarily fermenting, post-fermenting, press filtering and subpackaging. By means of a synergistic effect among the wheat koji, the coprinus comatus and the red yeast, contents of amino acid, polypeptide, mineral substances and the like in theyellow rice wine disclosed by the invention are improved based on original nutrients of the yellow rice wine; furthermore, the yellow rice wine has functional active matter of coprinus comatus polysaccharide and the like, and nutrients and functions of the yellow rice wine are enhanced.

The invention discloses a preparation method of a high-performance metal magnetic core and alloy powder for devices thereof, belonging to the technical field of metal powder manufacture. The technicalscheme comprises the following steps: (1) ingredients: FeSi as a base material, trace elements; (2) smelting: placing the batch in the step (1) in a smelting furnace, melting at 1450-12000 DEG C to form a molten metal, and flowing the molten metal into a high-pressure atomizing equipment at a flow rate of 6-13 Kg/min; (3) Air-water atomization: outflow the metal liquid in the step (2) from the small hole with the diameter of 3-5mm, and the nozzle in the high-pressure atomizing equipment carries out high-speed impact on the metal liquid outflow from the small hole, wherein the ejection pressure in the nozzle is 2MPa, the ejection water pressure in the nozzle is 100MPa, and the metal powder with the particle size of 10-100mu is prepared; (4) dynamic rotating annealing; The invention has theadvantages of improving the performance of the metal powder and controlling the parameters of the metal powder according to the requirements.

The invention discloses fungus polysaccharide-enriched leucopaxillus giganteus rice wine and a processing process thereof and relates to the technical field of rice wine. The rice wine is specificallymade of the following raw materials: millet, long-shaped rice, wheat koji, leucopaxillus giganteus and red yeast rice. A making method of the rice wine comprises steps of material steaming, pre-fermentation, main fermentation, post-fermentation, filter pressing and subpackaging. Due to synergetic actions of the wheat koji, the leucopaxillus giganteus and the red yeast rice, the contents of aminoacids, polypeptides, minerals and the like are increased on the basis of maintaining nutrition of conventional rice wine, functional active substances such as fungus polysaccharide are also provided,and the nutrition and the functions of the rice wine are enhanced.

The invention discloses a mucky clay similar material used for simulating deep foundation pit construction mechanism and a preparation method of the similar material. The proportions of components with different permeation grades of the similar material are as follows that high-permeability mucky clay comprises 96-105 parts of Yellow River sand, 11-17 parts of soft clay and 8-10 parts of siliconeoil; middle-permeability mucky clay comprises 95-104 parts of the Yellow River sand, 17-25 parts of the soft clay and 8-11 parts of the silicone oil; and low-permeability mucky clay comprises 96-105 parts of the Yellow River sand, 25-30 parts of the soft clay and 9-12 parts of the silicone oil. The similar material has the performance of high water content, low strength, high compressibility and the like, and is easy to be used to simulate the mechanical and deformation characteristics of muddy clay caused by deep foundation pit construction. In addition, materials can be obtained from local resources, and the utilization rate of the resources is improved.

The present invention adopts vinyl acetate as main material, uses sodium hydroxide as modifying agent, adds tackifier, thickener, dispersing agent, defoaming agent, preservative and proper quantity of water to make them into the invented modified vinyl acetate water-proofing glue with the advantages of high tensile strength, good rheological property, high cohesive force, stable mechanical property, good durability, no pollution and long service life. Said invented water-proofing glue is mainly used for leak-proofing treatment, damp-proofing treatment of building, water-proofing and sealing treatment between members of building and repairing caulking of road, etc.

The invention aims to provide special polypropylene filament needle-punched drainage geotechnical cloth for tunnels, a preparation method and a preparation system. The preparation method comprises the following steps: preparing polypropylene fibers by adopting a melt spinning process; adopting at least three traction devices which are sequentially arranged at intervals for conducting traction stretching on the polypropylene fibers, and thus obtaining stretched fibers, wherein the traction speeds of the sequentially arranged traction devices are sequentially increased, and the fineness of the fibers ranges from 13 dtex to 16 dtex; sequentially carrying out a yarn swaying and lapping process, a lubricating and reinforcing process and a tentering and setting process on the stretched fibers, and then obtaining the polypropylene filament needle-punched drainage geotechnical cloth. Through the design of the preparation method of the polypropylene filament needle-punched drainage geotechnical cloth, the technical problems that in the prior art, conventional non-woven cloth is poor in mechanical property, hydraulic property and chemical resistance, water permeation and drainage effects are difficult to achieve, the effect of protecting a geomembrane plate is lost, and the engineering life is affected are solved.