39results about How to "Conductivity is not affected" patented technology

A method of mitigating proppant settling in a hydraulic fracture in order to better suspend the proppant as well as ensure a more uniform pack, by mixing a pre-determined volume percent of low density additive, such as glass beads or other suitable material, such as polylactic acid particles, into the fracturing slurry along with the standard high-density proppant, it is anticipated that density gradients can be induced inside the fracture. Upward movement of low density additive due to them having density lower than the carrier fluid will interfere with downward movement of high-density proppant and vice versa. This mutual interference between the two proppants confined in the narrow fracture will significantly hinder the settling/segregation of the high-density proppant. The low density material has a specific gravity of about 0.3, particle size distribution similar to that of standard proppant, and sufficient mechanical strength to survive fracture closure stress.

The invention provides a high-stability water-based silver-plating protective agent. Every liter of the high-stability water-based silver-plating protective agent comprises 40-100 g of octadecanethiol, 4-10 g of trimethyl mercapto phosphate, 100 mg of reduced graphene oxide, 40-100 g of an emulsifier, 10 g of a stabilizer and the balance deionized water. The high-stability water-based silver-plating protective agent adopts the stabilizer and graphene, so that the service life of the protective agent is prolonged, and the corrosion resistance and color change resistance of protected metal are improved; and the surface appearance and performance of the silver-plating layer protected by the protective agent are not affected, a potassium sulfide resistance test of electronic products can be maintained for more than 12 minutes, and the protection time is greatly prolonged.

A method of producing a titanium-suboxide-based coating material comprises the following steps: providing a titanium-suboxide base material; and treating the titanium-suboxide base material under oxidizing conditions for in-situ development of a finely dispersed titanium-dioxide component in the ceramic titanium-suboxide base material.

The invention provides a PA/ABS composite material. The PA/ABS composite material comprises the following components in parts by weight: 25-40 parts of ABS resin, 25-40 parts of nylon 6 resin, 30-60 parts of graphite fillers, 5-10 parts of conductive carbon black, 1-5 parts of a compatibilizer, 0.1-1 part of an antioxidant and 0.1-3 parts of a lubricant.

The invention discloses carbon nano fiber paper and a preparation method thereof. The carbon nano fiber paper disclosed by the invention is combined by carbon nano fibers by means of the Van der Waals force and the cross linking of the carbon nano fibers, and the carbon nano fibers comprise one or more of multi-wall carbon nanotubes, single-wall carbon nanotubes, solid carbon nano fibers or activated carbon fibers. The preparation process of the carbon nano fiber paper disclosed by the invention comprises the steps of dispersing, filtering, roasting and rolling. No dispersing agent is needed in the preparation process, and the carbon tubes and the carbon fibers need no functionalized treatment. The carbon nano fiber paper prepared in the invention has the advantages of large specific surface area, good electrical conductivity and high air permeability; the materials are recyclable, so that no waste is generated; and since the process is simple, mass production is liable to achieve.

The invention discloses conductive foam suitable for electromagnetic shielding. The conductive foam sequentially comprises an outer protection layer, a foam layer, a first pasting layer, a metal foillayer and a second pasting layer, wherein the layers are combined to form the conductive foam, a nickel-titanium alloy thin film is formed on each of an upper surface and a lower surface of the metalfoil layer, leakage holes are formed in the foam layer and are filled with carbon nanotubes, the carbon nanotubes are porous spongy carbon nanotube block-shaped materials, first surfaces of the nickel-titanium alloy thin films are connected with the foam layer and the carbon nanotubes in the foam layer by the first pasting layer, and second surfaces of the nickel-titanium alloy thin films are connected with the second pasting layer. In the conductive foam provided by the invention, relatively excellent integral shielding performance and conductive performance can be provided for electronic equipment in a closed and narrow space with poor cooling performance.

The invention discloses a washing device. The washing device comprises a gun body, a first high-temperature steam pipe, a valve device and an extraction liquid pipe, wherein the gun body comprises a stock and gun barrel segments communicated with the stock, the gun barrel segments include the first gun barrel segment, the second gun barrel segment and the third gun barrel segment, one end of the first gun barrel segment is communicated with one end of the stock, the other end of the first gun barrel segment is communicated with one end of the second gun barrel segment through a universal joint with a hollow cavity, the second gun barrel segment is sleeved with the third gun barrel segment, one end of the third gun barrel segment is connected with the universal joint, an annular space is formed by the end of the third gun barrel segment and the universal joint, and the other end of the third gun barrel segment extends to the front side of the other end of the second gun barrel segment to form a diffusion space; the first high-temperature steam pipe is arranged in the gun body, one end of the first high-temperature steam pipe is communicated with one end of the universal joint, and the other end of the first high-temperature steam pipe extends out of the other end of the stock to be communicated with a high-temperature high-pressure steam generation device; the valve device is arranged between the stock and the first gun barrel segment and used for connecting and disconnecting the first high-temperature steam pipe; the extraction liquid pipe enters the first gun barrel segment and is communicated with the first high-temperature steam pipe and the universal joint.

A composite wire includes a metal inner core, an easily-passivated metal layer wrapping a surface of the metal inner core, and a self-adhesive resin layer wrapping a surface of the easily-passivated metal layer. An insulation layer of the composite wire is a metal passivation layer that is formed by the easily-passivated metal layer obtained after sintering treatment and oxidation. The preparation method is used for manufacturing the composite wire. The method for preparing a power inductor is used for preparing a new type of power inductor including the composite wire. The composite wire is high-temperature resistant and is easily wound. During winding, the easily-passivated metal layer is unlikely to fall off, thereby ensuring that the insulation layer formed by passivation of the easily-passivated metal layer has desirable weather resistance and voltage resistance.

The invention relates to the field of sanitary product manufacturing, and provides an absorbing core making technology. The technology comprises the steps that lower layer toilet tissue is laid on a conveying belt of a production line, high polymer fixing glue is sprayed to the upper surface of the lower layer toilet tissue through a gluing mechanism, high polymer materials are scattered on the gluing surface of the lower layer toilet tissue through a discharging mechanism to construct a first high polymer material layer, polymer fiber produced online is attached to the first high polymer material layer through an online polymer production mechanism to construct a polymer fiber layer, the high polymer fixing glue is sprayed to the polymer fiber layer through the gluing mechanism, the high polymer materials are scattered to the gluing surface of the polymer fiber layer through the discharging mechanism to construct a second high polymer material layer, and finally upper layer toilet tissue is attached to the second high polymer material layer to make the absorbing core. Accordingly, the problem that an existing absorbing core is too thick or the absorption effect is poor when the absorbing core is produced to be ultrathin is solved.

The invention discloses a preparation method of an indanthrene functionalized graphene three-dimensional network structure composite material. The method comprises steps of dispersing graphite oxide into DMF (Dimethyl Formamide), stirring, carrying out ultrasonic treatment, adding mixture into shinthrene solution, stirring again, and carrying out ultrasonic treatment; transferring the mixed solution into a reaction kettle, and carrying out a reaction for 620-720 min at a temperature of 160-180 DEG C; soaking a reaction product with secondary water for multiple times till the solution becomes colorless and transparent; and lastly performing freeze-drying to obtain the product. The method is advantaged in that physical characterization shows that a composite material has a high specific surface area and rich hierarchical porous structures which are communicated with one another, and indanthrene molecules are successfully adsorbed on a surface of graphene. An electrochemical performance test shows that the material has excellent electrochemical capacitance performance and rate capability, more importantly, a potential window of the material can reach 1.2V in sulfuric acid electrolyte/solution, and the material has a good application prospect as an electrode material of a supercapacitor.

The embodiment of the invention provides an electrostatic protection circuit and a display device adopting the same. The electrostatic protection circuit comprises three transistors and two voltage-dividing circuits, wherein one of source/drain of the first transistor is coupled with a first power wire and the other one is coupled with a second power wire; one of source/drain of the second transistor is coupled with the first power wire and the other one is coupled with a grid of the first transistor; one of source/drain of the third transistor is coupled with the grid of the first transistorand the other one is coupled with the second power wire; the first voltage-dividing circuit is used for providing first divided voltage to a grid of the second transistor based on the potential difference of the first power wire and the second power wire, and the second voltage-dividing circuit is used for providing second divided voltage to a grid of the third transistor based on the potential difference of the first power wire and the second power wire. The electrostatic protection circuit of the embodiment of the invention has stable and reliable performance and can not increase the load of the grid drive circuits and the source drive circuits.

The invention relates to a connection structure convenient for charge and discharge and maintenance of an accumulator. The connection structure comprises a battery electrode plate I, wherein one end of the battery electrode plate I is provided with a connection hole connected with an accumulator binding post; the other end of the battery electrode plate I is connected with a switch; the switch is connected with a wire connected with an electric appliance. When the connection structure is used, firstly, the switch is disconnected to disconnect the connection with the wire and battery electrode plate I, then a detection connector is connected with the battery electrode plate I; after the detection and the maintenance are finished, the detection connector is taken down and the switch is closed, so that the wire is communicated with the battery electrode plate I, and the problem of a conventional structure that two persons are needed, time and labour are wasted, the operation is inconvenience and a potential safety hazard exits. The connection structure has the advantages that the structure is simple, is convenient to perform and popularize, is convenient and rapid to use, and saves the time and the labour, and only one person can finish the operation.