342results about How to "Avoid wrapping" patented technology

The invention belongs to the technical field of graphene materials. Graphene conductive slurry is prepared from the following raw materials in parts by weight: 0.5 to 15.0 weight percent of oligegraphene, 0.1 to 0.5 weight percent of a dispersant, 80 to 99.4 weight percent of a diluent and 10 to 40 weight percent of organic resin. According to the graphene conductive slurry disclosed by the invention, by screening the dispersant in the early stage, the graphene can be more easily dispersed in the diluent during a mixing process of graphene powder and the diluent, and an obtained dispersion solution is good in stability; by adding the selected dispersant and using a technology adopted by the invention, stripping of the graphene in the diluent can be promoted; in the graphene conductive slurry, a part of solvent is replaced with a part of resin, so that the solid content of the graphene conductive slurry is increased, the stability of the graphene conductive slurry is increased, re-overlaying of the graphene is prevented, and very good compatibility is also provided for application in the late. The graphene conductive slurry which is good in performance and high in stability can be prepared, the cost is low, the technology is feasible, and the graphene conductive slurry is suitable for industrial production.

The invention relates to three-dimensional network graphene for a lithium battery and a preparing method thereof. The preparing method of the three-dimensional network graphene for the lithium battery comprises the steps that firstly, high-purity expanded graphite, an anion type organic surface active agent, a dispersing agent, an antifoaming agent and a solvent are fully mixed, so that thick few-layer graphene slurry is obtained; liquid swelling high polymer materials are added, composite slurry is obtained after even mixing, and the composite slurry is coated in holes of porous foam materials; finally, the porous foam materials are fully carbonized and then are further processed, so that three-dimensional network graphene powder is obtained. The graphene prepared through the method is of a porous network structure on the microscopic scale, and thus the graphene is high in specific surface area, high in conductivity, high in heat conductivity and good in electrolyte wettability; when the graphene is mixed into positive electrode and negative electrode materials of the lithium battery for manufacturing pole pieces, the electron conduction can be effectively improved, the internal resistance of the battery can be greatly lowered, the amount of heat generated when the battery is charged and discharged is educed, the power density, the energy density and the safety of the battery are further improved, and the service life of the battery is prolonged.

The invention discloses a surface modified nano ferroferric oxide Fenton catalyst and a preparation method thereof. The preparation method of the surface modified nano ferroferric oxide Fenton catalyst comprises the following steps: firstly preparing high dispersibility nano ferroferric oxide by adopting a coprecipitation method, and then carrying out surface modification on the nano ferroferric oxide by adopting a hydrolysis method. Organic acid salt and a non-ionic surface active agent are added when the coprecipitation method is adopted for preparing ferroferric oxide particles, so that the quantity of inorganic matters deposited on the surfaces of the ferroferric oxide particles is low, enrichment of reaction substrate and charge transfer on the surfaces of the ferroferric oxide particles can be enhanced, good catalytic efficiency can be realized at room temperature in a larger pH range, and the surface modified nano ferroferric oxide Fenton catalyst can be used for advanced oxidation treatment of dye sewage, organic pollutant sewage, pesticide sewage and the like. Therefore, the preparation method of the surface modified nano ferroferric oxide Fenton catalyst has the characteristics of simplicity in operation, mild conditions, adaptability to large-scale preparation and the like, cost for obtaining the product is low, and the obtained product can be widely and more easily popularized.

The invention discloses a method for reducing the sulphur content of a ternary precursor. Sulfate is used as a ternary salt raw material, and the ternary salt raw material, an alkaline solution and acomplexing agent are added to a reaction kettle for co-precipitation to prepare the ternary precursor, after co- precipitation reaction is carried out for 5-15 hours, pure water is added continuouslyor intermittently to the reaction kettle to replace clear liquid in the reaction kettle, and meanwhile, the alkaline solution and the complexing agent are added to keep a reaction system stable. The problem that the sulphur content in the ternary precursor exceeds the standard due to the fact that the sulfate is adsorbed on the surface of a crystal during the growth of the crystal and then wrappedinside the crystal is solved, the sulphur content of the prepared ternary precursor after one-time washing is less than 530 ppm, and during the subsequent water washing process, water resources are effectively saved; and the impurity content is reduced, the jolt ramming density of the ternary precursor is increased, and the morphology of the ternary precursor is not affected.

An implantation microelectrode with medicine releasing function is composed of a functional region consisting of a metallic site for electric stimulation and electric record and a micropool for releasing medicine, a welded point, and a connection line between said functional region and welded point and wrapped by substrate and an insulating layer. Said micropool has at least one opening covered by a nano-hole film and sealed by biodegradable polymer, and an acid-sensitive gel micropost in it, which is expanding when it is in contact with body fluid to extrude the medicine out of said micropool.

The invention discloses a targeted domain-control grouting device which comprises a mold-bag grouting pipe, a cement-based slurry grouting pipe and a control-liquid grouting pipe. The mold-bag grouting pipe, the cement-based slurry grouting pipe and the control liquid grouting pipe are fixed and respectively penetrate an orifice fastening and sealing unit. At least one mold bag externally sleeving the mold-bag grouting pipe is arranged on the same, a plurality of grout vents for adhering aluminum sheets are formed in the pipe wall of each mold-bag grouting pipe inside the mold bags, and when number of the mold bags is larger than one, spacing is formed among the mold bags, and spacing sections just correspond to key grouting parts of the grout vents; the cemented-based slurry grouting pipe and the tail end of the control-liquid grouting pipe are communicated to a mixer, a slurry-outlet short pipe is connected on the mixer, the slurry outlet of the slurry-outlet short pipe corresponds to the key grouting parts in the grout vent. The invention further discloses a grouting process utilizing the targeted domain-control grouting device. By the arrangement, targeted domain-control grouting on the key grouting parts is realized, mobility of double-liquid slurry initially grouted to stratum is guaranteed by mixing double liquid in the holes, the slurry can be sufficiently grouted in the key grouting parts, and overall effect of grouting engineering is improved.

The invention relates to a preparation method of porous polymer scaffolds used for tissue engineering by means of pore-forming agent bonding and filtering method, comprising two steps: firstly, a mold containing pore-forming agent is positioned in the environment with certain temperature and certain humidity, and the pore-forming agent in the mold then can bond together; secondly, polymer solution is cast into the mold, the pore-forming agent in the mold is filtered out after the solvent volatilizing, and a porous polymer scaffold can be obtained. The invention has the advantages of simple equipment, easy operation, controllable aperture, high porosity, excellent connectivity, and fitness for three-dimension porous cell scaffolds in tissue engineering and other application fields.

The invention discloses a WSN source position protective method based on offset angle. The method has characteristic that includes steps as follows: 1) obtaining hop count among each middle node and focus node, source node according with interest broadcast of focus node and local broadcast of source node; 2) counting offset angle value of each middle node according with hop count in step 1); 3) each source node and middle node collecting offset angle value of all adjacent middle nodes; 4) each source node and middle node counting forward probability of each adjacent middle node according with offset angle value of adjacent middle node; 5) sending information from source node to focus node through middle node and false source according with forward probability of adjacent middle node. The invention can increase security of source node for sending data.

The invention provides an unlocked data structure construction method and a data writing and reading method, and the construction method comprises the steps: setting a data queue which comprises a queue body; dividing the queue body into a plurality of queue elements which are sequentially and continuously arranged, and sequentially recording each queue element by adopting a digital serial numberaccording to the time sequence of the queue elements entering the queue body; generating a production progress cursor of a producer writing data into the queue body according to the number serial number of the queue element located at the head of the queue body; and generating a consumption progress cursor of a consumer reading data from the queue body according to the digital serial number of thequeue element at the tail part of the queue body. The data queue constructed by the construction method is high in data processing speed, and the computer performance can be improved.

The present invention belongs to the data hiding technology field, and provides a method and system of obtuse angle prediction based on reversible information hiding. The method comprises: obtaining a carrier image and auxiliary information, wherein the auxiliary information comprises watermark information and a position map, performing preprocessing, determining the size of the scanning block and the image roughness, performing predication of the target pixel according to the maximum predicated angle, the reference pixel quantity and the location of the target pixel, obtaining the prediction error of the target pixel, embedding the watermark information into the carrier image according to the predication error of the target pixel and the storage information of the auxiliary information, forming a secret carrying image, identifying the auxiliary information in the secret carrying image, extracting the watermark information from the secret carrying image, restoring the pixel having correcting the pixel gray value and restoring the carrier image. The method and system of obtuse angle prediction based on reversible information hiding can improve the embedding capacity and the peak signal to noise ratio of the reversible information hiding technology and enhance the predication performance.

A solid rocket motor core casting anti-propellant entrainment device comprises an airfoil pressure plate (1), a material receiving tray (2), and a steering arm assembly (3). Before inserting the core, the steering arm assembly (3) welded on the material receiving tray (2) is assembled, and then the airfoil pressure plate (1) and the material receiving tray (2) are assembled and fixedly connected to complete the preparatory work. After pouring the propellant inside the engine case in a vacuum environment, the invention is installed on the engine pouring port (5) by rotating the knurled fastening bolt (34) and the stop block (36). When inserting the core, the core mold (6) enters the engine casing at a constant speed, and the propellant extruded by the core mold flows into the receiving tray ( 2) in the annular groove until the ferrule is completed within the specified time. After inserting the core, unclamp the knurled set bolt (34), take off the present invention, clean up and reset.

The invention relates to a method for recovering metal elements from a waste and old ternary lithium-ion battery, belongs to the technical field of recovery of waste and old batteries, and aims at solving the problem that the conventional method is low in recovery rate of metal elements. The method comprises the following steps: disassembling the waste and old ternary lithium-ion battery, and collecting the powder of positive electrode materials of the battery; preprocessing the powder of the positive electrode materials with a mixed solution containing biogenic organic acid and bioflavonoid;filtering, and collecting the filtrate; selectively depositing the collected filtrate; recovering at least one metal element. According to the method, the adhesive component in the positive electrodematerial can be effectively removed and decomposed, so that the metal elements can be effectively separated and dissolved out, thus the dissolving rate is effectively increased, and the subsequent recovery effect of the metal elements can be ensured.

The invention discloses a water treatment device capable of scraping membrane surface sludge. The device comprises a treatment tank, a driving unit, a water production pipe, a filtering unit, a fastening unit, and a scrapping unit. The water production pipe is connected with a transmission shaft of the driving unit. The filtering unit comprises a plurality of filter bags stacked and sleeved on the water production pipe with a watertight manner. The fastening unit comprises a plurality of connection-guide plates and watertight components. Two connection-guide plates form a group, and are staggered and embedded with the filter bags. The scrapping unit comprises a plurality of stirring plates and brush bodies. The stirring plates are respectively sandwiched between the filter bags and the connection-guide plates. The brush bodies are arranged on the outer side of the stirring plates, and contact the filter bags. When the driving unit drives the filtering unit on the water production pipe to rotate, with a water resistance effect, the brushes hinged on the stirring plates can automatically perform scrapping and cleaning upon the surfaces of the filter bags.

The invention relates to a method for producing HCl (hydrogen chloride) from NaCl. The method comprises the following steps: mixing NaCl and H2SO4 in a saturated Na salt solution to convert NaCl in the Na salt solution into Na2SO4 salt and HCl gas, performing heating and stirring to promote volatilization of HCl gas, absorbing the volatilized HCl gas with water or an aqueous solution to obtain HClor a HCl-containing solution, performing filtering after the reaction, using an obtained filtrate as a mixed medium of NaCl and H2SO4 continuously, refining a filter cake with a saturated Na2SO4 saltsolution to obtain a qualified Na2SO4 salt product, and returning the refined solution to serve as a mixed medium of NaCl and H2SO4. No waste water, waste residues or waste gas is produced in the whole process. Cyclic utilization of Cl in a production system can be realized by combining with a process for treating a Cl-containing waste solution and recovering NaCl; the method has the advantages of being clean, environmentally friendly, economic, efficient and the like, and is particularly suitable for industrial application of resource treatment of the Cl waste solution in metallurgical and chemical enterprises taking HCl as a raw material.

The invention discloses a functional cigarette holder with switchable airflow channels. The functional cigarette holder comprises a filtering cylinder, a cigarette inserting opening is formed in one side of the filtering cylinder, a suction nozzle is arranged on the other side of the filtering cylinder, an annular particle mounting tube is arranged in the filtering cylinder, filtering particles are placed into the annular volume of the particle mounting tube, a flue gas through tube is formed in the middle of the annular volume of the particle mounting tube, an external air through hole is formed in the side wall of the particle mounting tube, and an internal air through hole is formed in the end side of the particle mounting tube and positioned on one side of the suction nozzle. The functional cigarette holder with the switchable airflow channels is provided with two air through channels, the external air through hole is externally communicated with external air, the internal air through hole is communicated with the suction nozzle, and airflow with fragrance increasing filtering particles and flue gas in the flue gas through tube are combined, so that fragrance is increased and supplemented.

The invention relates to a glaze covering device for use in a ceramic tile blank glaze showering and a method thereof. The method is to identify the position of a ceramic tile blank (6) on a conveying belt (1), and closes a glaze covering mechanism to cover the falling of a glaze curtain (7) if the ceramic tile blank (6) is not under a glaze shower and opens the glaze covering mechanism to uncover the falling of the glaze curtain. The device comprises a glaze covering tile (5) and a driving unit of the glaze covering tile (5), wherein the driving unit is electrically connected with a control unit and a sensor for identifying the ceramic tile blank in turn. The device and the method have the advantages that: the glaze covering tile and automatic sensor control are adopted to cover the glaze slurry under a curtain to make the glaze slurry not cover a belt when no tile blank passes by; and thus, the carrying of glaze slurry by the belt is avoided, the problems caused by the loss and pollution of the glaze slurry and the adhesion of the glaze on the belt are solved, the production cost is reduced, and the production efficiency and quality are improved.

The invention discloses a growth type cyclone dust collector, and belongs to the field of cyclone dust collectors. The growth type cyclone dust collector comprises an air inlet pipe, a conical dust collector, a buffer hopper and a barrel, wherein an air exhaust pipe, a cyclone and a conical sedimentation barrel are arranged in the barrel; the air exhaust pipe is fixedly provided with spiral flow guide blades; a dust discharge port is formed at the lower end of the dust collector; the air inlet pipe is arranged on one side of the cyclone and is communicated with the cyclone; the lower end of the cyclone is connected with the conical sedimentation barrel and is communicated with the cyclone; an inverted cone-shaped buffer hopper is arranged between the sedimentation barrel and the dust collector; and the conical sedimentation barrel is lengthened, and a taper angle is set to be 20 to 25 degrees. According to the arrangement mode, the problems of secondary back-mixing discharge of dust and short sedimentation time of the dust in the sedimentation barrel existing in the conventional dust collector are solved, and the retention time of airflow in the cyclone is prolonged; and partial dust particles on the inner side are prevented from being brought into an air outlet pipe, and complete sedimentation of small particles is facilitated, so that the dust removal rate of equipment is improved, and the dust can be thoroughly removed.