744results about How to "Fully infiltrated" patented technology

The invention relates to a glass fiberreinforced thermoplastic composite and a continuous fiber-reinforced composite, which are prepared with the following raw materials percentagewise by weight: 35-60 % of resin, 35-60 % of dip treated glass fiber and 0.5-5 % of auxiliary agent. The invention adopts resin and dip treated glass fiber as main raw materials, mixtures of antioxidant, ultraviolet absorbent and light-stability agent as main auxiliary agents, with logical formulations, eliminates the damage to glass fibrous surface caused by twin-screw with continuous fiber-reinforced composite producted by this manufacturing technique, improves product lustrous surface, binding properties between fiberglass and resins by a treatment for glass fibrous surface and mechanical properties of products, protects the materials for long periods from destruction because of addition of various stabilizing agents, and solves the limitation that general materials can not be used for a long time in extreme conditions such as high temperature, high humidity, radiation and so on.

The invention provides a lithium ion battery and a lithium-rich anode sheet. The lithium-rich anode sheet comprises: a current collector; and a diaphragm, which contains an active substance and is formed on the current collector, wherein the diaphragm and the current collector form an initial anode sheet. The current collector in the initial anode sheet is a porous current collector. The initial anode sheet is rich in lithium on one side, and the lithium rich amount matches the lithium supplement capacity needed by the initial anode sheet. The lithium ion battery includes: a cathode sheet; an anode sheet; an isolation membrane disposed between the cathode sheet and the anode sheet; and an electrolyte solution. The anode sheet is a lithium-rich anode sheet. The lithium-rich anode sheet of the lithium ion battery provided by the invention not only overcomes the excess lithium supplement problem in traditional lithium-rich anode sheets, and also can effectively control the lithium supplement amount of the anode so as to realize uniform lithium supplement and enhance the first coulombic efficiency of the lithium ion battery adopting the lithium-rich anode sheet. Thus, the energy density of the lithium ion battery is greatly improved, and the lithium ion battery can be ensured with better electrochemical properties.

The invention discloses a preparation method of a continuous filament of an asphalt-based carbon fiber, and belongs to the field of carbon fiber production. The preparation method solves the problems that the existing spinning speed is lower, the fiber bundle damage is large, the infusibility efficiency is low, and doubling and embrittlement are easy. The preparation method comprises the specific process steps that a, spinning asphalt is extruded into fines by spinning position fusion, humidified, oiled and bundled to form a protogenic asphalt fiber bundle; b, double roller stranding and tensioning are conducted; c, the asphalt fiber bundle is wound on a spinning roller sleeve; d, an asphalt fiber reel is immersed in an oxidability liquid phase, and a liquid-phase oxidized fiber bundle reel is obtained; e, the reel is immersed in a high-temperature-resistant oil solution; the filament is unreeled and rollers are removed at a low speed; the oxidized fiber bundle continuously enters a continuous infusible furnace and a continuous low-temperature pre-carbonization furnace to form a pre-carbonization fiber bundle reel; and f, drawing heat treatment is conducted through a continuous carbon-fiber high-temperature carbonization furnace and a graphitization furnace, and then the continuous filament of the asphalt-based carbon fiber is obtained.

The invention discloses a preparation method and application of a carbon intercalation layer V2O3 nanometer material. The preparation method comprises the following steps of (1) adding vanadium pentoxide powder into an organic amine liquid, and uniformly stirring and mixing the powder; (2) transferring a mixed liquid to a reaction kettle for hydrothermal reaction; and (3) placing the obtained hybrid precursor in a furnace after drying, introducing an inert gas for carbonization to obtain a V2O3/C hybrid nanometer material. The V2O3/C hybrid nanometer material prepared by the method is uniform in morphology, and a carbon layer can be effectively dispersed in a nanometer substrate in the material. When the material is applied to a lithium ion battery or sodium ion battery negative electrode, the rate performance of a metal oxide used as an electrode material can be greatly improved, the volume energy density of the battery is improved, and the material has relatively large application prospect.

The invention belongs to the technical field of lithium ion battery materials, and specifically relates to a porous graphene supported carbon coated iron oxide nanoparticle composite material and a preparation method thereof. The porous graphene supported carbon coated iron oxide nanoparticle composite material is prepared from the following steps: (1) directly preparing graphene oxide with graphite ore as a raw material by using a closed oxidation method; (2) preparing a ferric salt aqueous solution, wherein the specific steps are as follows: weighing and dissolving cetyl trimethyl ammonium bromide in water to obtain a clear cetyl trimethyl ammonium bromide solution, adding a ferric salt, stirring until the ferric salt is completely dissolved, and adding an ammonia solution to prepare the ferric salt aqueous solution; and (3) stirring and ultrasonic mixing the graphene oxide solution with the ferric salt aqueous solution, placing the mixture in a water bath kettle, reacting at 80-100 DEG C for 0.5-5h, stewing at a room temperature, removing clear liquid, freeze drying a head product, and carrying out heat treatment on the head product in an inert atmosphere to obtain the porous graphene supported carbon coated iron oxide nanoparticle composite material.

The invention discloses conductive copper paste for surface electrodes of a chip ceramic capacitor. The conductive copper paste comprises the following raw materials in percentage by mass: 65 to 72 percent of metal powder, 4 to 7 percent of glass powder and 24 to 30 percent of organic binder, wherein the metal powder consists of Cu and W or Cu and Mo; the glass powder consists of CaO, ZnO, Bi2O3, BaO, SiO2, B2O3 and Al2O3; and the organic binder consists of solvent, ethyl cellulose, silane coupling agent and surfactant. The conductive copper paste is printed through silk screens and sintered under the protection of N2 gas, the performance of the obtained finished product of the chip ceramic capacitor can completely meet the technical requirements of the ceramic capacitor, and the conductive copper paste can be used for replacing conductive silver paste on the surface of the corresponding chip ceramic capacitor.

The invention provides an ultrasonic surface modification treatment method for aramid fibers. One or more amidic organic solvents in any proportion are selected as an ultrasonic treatment medium; under an ultrasonic action, fiber surfaces can be etched effectively by the amidic solvents; simultaneously, the sticking points among aramid fiber filaments can be reduced, and the state of the surfaces can be improved, so that the bonding strength between a resin and a fiber is increased; and meanwhile, the online treatment of the fibers is easy to realize by the ultrasonic treatment, and the time for modifying the fiber surfaces is shortened.

The invention provides a diamond grinding wheel for precise polishing for the surface of a silicon material and a manufacturing method for a tool bit thereof. Surface roughness Ra of a silicon chip polished by the grinding wheel is lower than 0.03, Ry is lower than 0.27, and Rz is lower than 0.29. The diamond grinding wheel comprises a steel basal body and the tool bit embedded in the steel basal body; the tool bit is manufactured by the following steps: putting a mixed material into a die cavity of a die; and heating and pressurizing the mixed material, so as to press the mixed material to the required size; and a preparation method for the mixed material comprises the following steps: preparing powder from the following components in volume percentage: 20 to 40 percent of phenolic resin, 12. 5 to 25 percent of diamond, 10 to 15 percent of Fe2O3, 10 to 15 percent of CeO2, 5 to 10 percent of Al2O3, and 5 to 10 percent of Cu powder; and then 20 to 50 percent powder mass of pore forming agent is added into the powder.

The invention discloses a process for preparing composite fiber punched felt consisting of fiber glass and polypropylene fiber, which comprises introducing the composite fiber into the two filament throwing rollers, falling down to the conveyer belt, securing the structure through twice punching actions, distributing homogeneously, compacting with pressure roller, cutting needed width with a cutting knife, winding up into composite fiber punched felt.

The invention provides a lithium metal oxide composite positive electrode material with a multilayer structure, a precursor material for constituting the same, and a preparation method and an application for the precursor material. The invention relates to the lithium metal oxide composite positive electrode material used for a lithium ion battery, and a preparation method and an application for the lithium metal oxide composite positive electrode material. The invention aims to solve the ubiquitous problems of low specific capacity, bad cycling performance, high improvement cost and low tap density existing in the lithium metal oxide composite positive electrode material. According to the preparation method, primary granules are controlled in real time to be arranged based on layers in a coprecipitation method reaction process by enabling metal salt solution components to be subjected to stage changes and cease type overflowing; the metal salt components of the primary granules in each layer are different; a precursor of the high-performance lithium metal oxide composite positive electrode material with the multilayer structure is obtained; and the lithium metal oxide composite positive electrode material with the multilayer structure is finally synthesized by the combination of a gradient temperature rise way. The lithium metal oxide composite positive electrode material is used for the lithium ion battery.

The invention discloses a low-floating-fiber high- glossiness glass fiber reinforced polyamide composition and a preparation method thereof. The composition comprises 30 to 85 parts by weight of polyamide resin, 15 to 60 parts by weight of glass fiber, 0.1 to 10 parts by weight of nanometer filler and a rheological regulator in an amount which is 0.08 to 5.0 percent of the weight of the glass fiber, wherein the nanometer filler and the rheological regulator are limited, particularly the structure of modified hyperbranched polymer in the rheological regulator is specifically limited. Due to adoption of the rheological regulator, the retention distribution range of melt in processing equipment can be reduced to a great degree and the product appearance defect caused by the part which exceedsthe ideal retention time limit value is reduce; in particular, the nanometer filler which integrates the special structure and the effect has remarkable beneficial effect of improving the appearanceof the glass fiber reinforced polyamide composition; the obtained polyamide composition has high glossiness and little floating fiber, and still can maintain excellent physical and mechanical properties while embodying good product appearance.

The invention discloses a processing method for vacuum drying impregnation of a capacitor. The method comprises the following steps of heating a power capacitor to 80-90 DEG C; cooling the internal temperature of the power capacitor to 70-80 DEG C, and improving the vacuum degree of the gas partial pressure in a vacuum tank to 0.5-1 Pa step by step; opening an ultrasonic generating component which is arranged on the external wall of the power capacitor, and cooling the internal temperature of the power capacitor to 40-60 DEG C, and reducing the gas partial pressure of the vacuum tank at 0.2-0.5 Pa, and meanwhile slowly pouring insulating medium oil in the power capacitor shell for 8-22 h; after the internal part of the power capacitor is filled with the insulating medium oil, maintaining the opening state of the ultrasonic, reducing the internal temperature of the power capacitor, maintaining the internal temperature at 30-40 DEG C, and controlling the vacuum degree of the gas partial pressure in the vacuum tank about 0.2-0.5 Pa. According to the processing method provided by the invention, the gas integrated into the insulation medium oil and the local few low vacuum gas which is sealed between solid medium layers and between medium and aluminum foil layers by the insulation medium oil can be exhausted more easily.

According to the invention, a high energy micro-arc alloying technology and a glow plasma nitriding technology are combined to prepare a TiN coating on the surface of a metal. The process method comprises: adopting a high energy micro-arc alloying technology to deposit a layer of a pure Ti coating on the surface of a metal, wherein pure Ti with a certain specification is selected as a deposition electrode during the preparation process, and a variable thickness of the pure titanium layer can be achieved through controlling key technology parameters in the preparation process; and carrying out a nitriding treatment on the deposited pure titanium layer through a glow plasma nitriding technology to form a TiN layer, wherein during the treatment process, a furnace is adopted as an anode, the titanium layer is adopted as a cathode, ammonia gas or mixed gas of hydrogen gas and nitrogen gas is introduced, and nitrogen ions and nitrogen atoms generated from glow discharge are easily absorbed and permeated by the micro-crystallized Ti layer so as to form the TiN coating on the surface of the micro-crystallized Ti layer.

The invention discloses a manufacturing method of a high-temperature resistant fiber wound composite material shell in the field of monitoring. The manufacturing method comprises the following steps:(1) a tool and a mold are prepared; (2) preparation of a gypsum layer: gypsum powder, polyvinyl alcohol and water are mixed as gypsum according to a weight ratio of 2: (1-2): 1; after uniform mixing,the mixed gypsum is coated on a metal core mold; and an outer molding surface of the core mold is treated to a theoretical inner molding surface of a thermal insulation layer by using a molding surface scraper; (3) a skirt mold is prepared; and (4) a skirt is prepared. The composite material shell produced by the method has the characteristics of low mass, high reliability, low cost, high-temperature resistance and high blasting pressure, and can meet the requirement of normal flying of a novel aerospace aircraft under harsh high-temperature environment; and the manufacturing method can be used for manufacturing the high-temperature resistant fiber wound composite material shell.

The invention discloses an integration method of a high-reliability power hybrid integrated circuit. The method comprises the following steps of: (1) firstly, washing an original thick film substrate with ultra sound and drying; (2) forming a multilayer Cu-Ni-Cr-Au composite film at the back of a ceramic substrate in a high-vacuum magnetically-controlled sputtering platform in one step by using a high-vacuum sputtering method; (3) selectively sputtering another Cu-Ni-Cr-Au composite film again on the basis so that a multilayer metal film grooved mesh is formed in a selected region; (4) then, annealing at a high temperature to obtain a thick film substrate; and (5) assembling the thick film substrate on a shell base, assembling a semiconductor chip and other separate devices, bonding with silicon-aluminum wires to connect the circuit and seal a lid to obtain a made high-reliability power hybrid integrated circuit. The integrated circuit made by the method has favorable welding system compactness, adhesion, heat conductivity, rapid radiation and circuit reliability and is widely applied to the fields of aerospace, aviation, ships, precise instruments, geological exploration, oil exploration, communication, and the like.

The invention provides a preparation method for three-dimensional cover glaze. The preparation method comprises the following steps: I, selecting at least one monochrome from an image to prepare a silk screen plate; II, applying cover glaze on a semi-finished blank in a silk screen printing pattern, wherein the cover glaze is powder; III, baking in a kiln to obtain ceramic with the three-dimensional cover glaze. In the preparation method for the three-dimensional cover glaze, an image pre-treating scheme is adopted, and the advantage of bright color of silk screen printing is utilized, so that a ceramic product with a bright image is obtained.

The invention relates to lithium metallic oxide precursor material with an annual ring type structure, an anode material prepared by the lithium metallic oxide precursor material, and a preparation method and application, and in particular to the lithium metallic oxide precursor material for a lithium ion battery and a preparation method of the lithium metallic oxide precursor material, and the anode material prepared by the lithium metallic oxide precursor material, the preparation method and the application. The invention aims to solve the problems of small discharge capacity, poor circulating performance and low tap density of a common lithium metallic oxide anode material. According to the lithium metallic oxide precursor material with the annual ring type structure, the anode material prepared by the lithium metallic oxide precursor material, and the preparation method and the application, disclosed by the invention, the solid-to-liquid ratio of a solution in a coprecipitation reaction process is controlled to be in periodic linear variation in rear time by using an intermittent equivalent overflowing way; the prepared lithium metallic oxide precursor material and the anode material prepared by the lithium metallic oxide precursor material are used in the field of batteries.