49results about How to "Stable and controllable performance" patented technology

The invention relates to a preparation method of graphene and graphene prepared by the method, and is characterized in that the method adopts graphite as a raw material; a graphite intercalation compound is prepared by intercalating metal between graphite layers; and then graphene is prepared by peeling the graphite intercalation compound. The graphene prepared by the method has a length and a width of 5-15000 nm, and a thickness of 0.3-15 nm. The advantages of the invention are that: the raw material source is wide; the cost is low; the preparation method is simple; the product performance is stable and controllable; and the method is suitable for industrial production.

The invention relates to a using and constructing method of a decorative and fireproof integrated plate in the field of building engineering. The decorative and fireproof integrated plate is characterized in that a first corrosion-resistant bottom layer and a finishing paint coating are sequentially coated on the surface of one side of a metal plate substrate, and a second corrosion-resistant bottom layer and a fireproof coating are sequentially coated on the surface of the other side of the metal plate substrate. A component face needing fireproof treatment is coated with the decorative and fireproof integrated plate, and the fireproof coating is positioned on the inner side. The integrated plate can create necessary fire-resistant time for a protected steel component in a fire and can provide prefabrication assemblability at a construction stage and good decorativeness at a using stage.

The invention relates to a silencing felt and application thereof. The silencing felt is composed of, by weight percentage, 75-90% of cotton fiber and 10-20% of low-melting-point fiber. By regulatingthe content of the cotton fiber and the low-melting-point fiber, the silencing felt can achieve excellent sound absorbing performance and VOC (volatile organic compounds) performance, thereby, compared with common PET (polyethylene terephthalate) felts, being higher in sound absorbing performance, stable and controllable in VOC performance and capable of meeting the requirements of major automobile manufactures on the sound absorbing performance and the VOC performance and further having a good application prospect.

The invention relates to a 3D grapheneized carbon positive electrode total battery and a preparation method thereof. The preparation method is characterized by comprising the following steps: taking graphite paper and carbon-containing conductive adhesive as raw materials, coating one side of the graphite paper with a layer of carbon-containing conductive adhesive, and drying and solidifying the carbon-containing conductive adhesive to form a graphite paper and carbon-containing conductive adhesive layer composite electrode material; dividing the other side of the graphite paper into a tab area, a battery reaction area and a third area (the other parts), and coating the third area with hydrophobic adhesive for sealing and solidifying; grapheneizing the battery reaction area, making the battery reaction area form a battery positive electrode through anodic oxidation, forming capacity, and obtaining a grapheneized carbon positive electrode; and assembling a total battery by taking the prepared grapheneized carbon electrode as a positive electrode and an aluminum foil, a magnesium plate, a magnesium alloy plate, a zinc plate or a galvanized composite plate as a negative electrode andinjecting electrolyte. A carbon positive electrode with high specific capacity and a total battery with high specific energy are prepared. The raw materials are widely sourced and low in cost, and thepreparation method is simple and environment-friendly. The product has stable and controllable performance, and is suitable for industrial production.

The invention relates to a skin folding machine with a cutting machine, and relates to a skin folding machine, in particular to a skin folding machine for fish skins. With the added cutting machine and a roll guiding device, fish skin rolls do not waggle transversely on a conveyor belt when the conveyor belt is advanced so as to realize the cutting process of the fish skin rolls. The skin foldingmachine comprises a machine frame, the conveyor belt and a skin folding driving machine; the conveyor belt and a skin folding driving machine are mounted on the machine frame; the skin folding drivingmachine also comprises a fixing seat, a skin folding driving motor, a motor fixing frame, an electric control box, a skin folding roller frame and a skin folding roller; the fixing seat comprises anupper part and a lower part; the roll guiding device is also mounted on the skin folding driving machine. The skin folding machine is characterized in that the cutting machine is also mounted at the rear end of the machine frame.

The invention discloses a preparation method of high-intensity and high-impact-resistance polystyrene. The method is characterized by comprising the following steps: preprocessing raw materials; performing surface treatment on a nucleating agent; mixing 65-92 parts by mass of dried polystyrene, 5-20 parts by mass of rigid particles, 2-10 parts by mass of a nucleating agent undergone surface treatment, and 1-5 parts by mass of a lubricating agent to obtain a mixture; adding the mixture to a twin-screw extruder; smelting and extruding the mixture; then cooling and cutting the mixture into particles; drying to obtain the high-intensity and high-impact-resistance polystyrene. The high-intensity and high-impact-resistance polystyrene prepared according to the method is high in impact resistance, and outstanding in processing performance, pressure resistance and compressive strength, and is applicable to production of products such as food packages, electric elements, inner tanks of refrigerators, housings of electric appliance and electric equipment.

The invention relates to a wool warp yarn continuous tension adjusting method without a displacement sensor. The wool warp yarn continuous tension adjusting method comprises the following steps that (1) the initial position of a pressing roller is determined through a limiting switch; (2) a servo motor is controlled in a fixed torque mode to drive the pressing roller to load pressure to the fed wool warp yarn from the position between two rolling bearings; (3) a rotation angle is determined according to a coding disc of the servo motor, and the real tension in the wool warp yarn is calculated by a controller based on the following information: the rotation angle alpha, the radius r of the pressing roller, the length l of a pressing roller connecting rod, and the spatial position coordinates (xa, ya) and (xb, yb) of a servo motor shaft O and the two rolling bearings with yarn contact points A and B; and (4) the torque output of the servo motor is adjusted by comparing the difference between the target tension and the real tension, the rotation angle of the servo motor is recorded, and continuous adjustment of the tension of the wool warp is achieved through real-time calculation. A displacement sensor does not need to be installed on the pressing roller, and continuous adjustment of the tension of the wool warp is completed only through the servo motor.

The invention provides a preparation method of a reactive-type organic carbon nano filler. The preparation method includes the steps of: 1) soaking the carbon nano filler in excessive concentrated nitric acid to oxidize the carbon nano filler to obtain hydroxylated carbon nano filler; 2) soaking the hydroxylated carbon nano filler in an excessive ethyl acetate saturated solution of maleic anhydride to carry out stem grafting to obtain carboxylated carbon nano filler; and 3) soaking the carboxylated carbon nano filler in an excessive ethanol saturated solution of a polyamino small-molecule compound to carry out stem grafting to obtain the reactive-type organic carbon nano filler. The reactive-type organic carbon nano filler not only has the physical advantages of conventional nano filler, but also can participate in a curing reaction of epoxy resin. The nano filler has good dispersibility in resin and can control movement of molecular chains, so that prepared resin composite filler is excellent in mechanical performance and heat resistance.

The invention provides a communication method among multiple tasks under a real-time system, which is characterized in that a control end, tasks and data are included, and the control end is connectedwith the tasks and the data respectively; the control end is composed of a data communication control service end, a main controller communication data space and a task communication space distributor. The data communication control server is respectively connected with the main controller communication data space and the task communication space distributor, the main controller communication data space is connected with the task, and the task communication space distributor is connected with the data; according to the invention, a controlled task, process data and a control server are separated into three sections; the data communication control server is used to carry out communication control management on the multiple tasks. According to the method, a control end, task and data decentralized control method is used, and the task communication process can be effectively monitored on the basis that multi-task real-time performance normal communication is not affected.

The invention discloses a tensile device and method of anti-seismic buildings, and belongs to the engineering anti-seismic technical field. The tensile device comprises pre-buried fixed tensile piecesand a follow-up limiting piece. According to the different burying positions of the pre-buried fixed tensile pieces in an anti-seismic layer, the pre-buried fixed tensile pieces include the upper pre-buried fixed tensile pieces and the lower pre-buried fixed tensile pieces; when the horizontal shearing deformation of an anti-seismic support reaches a design displacement threshold, the tensile device exerts reverse tensile force on the upper structures of the anti-seismic buildings, the anti-seismic support is prevented from continuing to deform, the horizontal displacement of the anti-seismicbuildings is prevented from exceeding the limit, and the collapsing problem of the high-rise and ultrahigh-rise anti-seismic buildings with large heights is effectively solved; most parts of the device are selected from standard parts, cost is low, construction is simple, the requirement for installation precision is not high, main parts are convenient to replace, performance is stable and controllable, the collapsing problem of anti-seismic buildings can be effectively solved, and the tensile device and method have great significance in increasing the height-width ratio limit value of the anti-seismic buildings and applying the anti-seismic technology to the ultrahigh-rise buildings.