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119results about How to "Settlement inhibition" patented technology

Preparation method of negative electrode slurry capable of reducing expansion of lithium ion battery

The invention discloses a preparation method of negative electrode slurry capable of reducing the expansion of a lithium ion battery. The preparation method comprises the following steps of: carrying out dry blending on a negative electrode active substance and a conducting agent in advance; dissolving sodium carboxymethyl cellulose into de-ionized water to obtain a CMC (Carboxyl Methyl Cellulose) gel solution with the concentration of 1.0%-2.0%; adding one part of the CMC gel solution into a mixture of the negative electrode active substance and the conducting agent and stirring at a high speed for 0.5-1h; adding the balance of CMC gel solution and stirring at a high speed for 1-3h; adding a modified SBR (Styrene Butadiene Rubber) binding agent and stirring at a middle speed for 0.3-1h; and adjusting the viscosity. By adopting the method of carrying out the dry blending on artificial graphite and the conducting agent in advance, adding the glue solution by two times and utilizing modified SBR as the binding agent, a bridge phenomenon of the artificial graphite is reduced, a pole piece structure is changed, the binding force between grains is improved and the expansion of a negative electrode is reduced; meanwhile, the slurry sedimentation of the artificial graphite is inhibited. The preparation method of the negative electrode slurry capable of reducing the expansion of the lithium ion battery has important meanings on ternary lithium ion batteries and improvement of machinability, capacity and safety of high-capacity power batteries.
Owner:南京国轩新能源有限公司

Non-bridgehead-conical-slope cast-in-situ baffle foam concrete light embankment structure and construction method

ActiveCN106087628AReduced fill loadReduce additional stressRoadwaysRebarEmbedment
The invention relates to a non-bridgehead-conical-slope cast-in-situ baffle foam concrete light embankment structure and a construction method. The structure mainly comprises an upright, a cast-in-situ concrete baffle, a baffle foundation, a cover beam, embedded thread sleeves, template stay bars, template guide fixing plates, a side die, opposite-pull screws, template fixing plates, baffle connecting reinforcing steel bars, template fixing screws, connecting keys, fastening nuts, transverse connecting ribs, transverse connecting rib end plates, anti-shearing ribs, vertical connecting ribs, reinforcing steel bar fixing plates, V-shaped pulling pieces, an upper layer reinforcing mesh, transitional section foam concrete and joint section foam concrete. The method includes the main construction steps of firstly, ground stabilization, secondly, embedment of embedding parts, thirdly, reinforced cushion layer construction, fourthly, baffle foundation construction, fifthly, baffle construction, sixthly, reinforcing mesh laying construction, seventhly, foam concrete filling, eighthly, water permeating layer laying, and ninthly, road surface laying. By the adoption of the construction method, construction of the embankment structure can be achieved under the condition that no bridgehead conical slope is arranged, and the economic and technical benefits are relatively good.
Owner:ZHEJIANG UNIV CITY COLLEGE +2

Low-frequency hydraulic pulse generating device and method for reservoir temporary-plugging diversion fracturing

ActiveCN107288576ASpread sand evenlyEffective Sand CarryingFluid removalHydro energy generationHydraulic fracturingEngineering
The invention discloses a low-frequency hydraulic pulse generating device and method for reservoir temporary-plugging diversion fracturing. The low-frequency hydraulic pulse generating device comprises a cylinder body, an upper connector and a lower connector, wherein the upper connector and the lower connector are connected to the upper end and the lower end of the cylinder body correspondingly; a piston matched with the cylinder body is arranged in the cylinder body; the upper portion of the cylinder body is of a cylinder structure, and the lower portion of the cylinder body is of a cone structure; a throttling device is arranged at the upper end of the piston; a flow guiding through hole is formed inside the piston; a throttling through hole is formed in the center of the throttling device and vertically communicate with the flow guiding through hole, and the diameter of the throttling through hole can become larger under erosion of fracturing liquid; a reset spring is arranged at the bottom of the piston; and a first pressure relief hole , a second pressure relief hole and a third pressure relief hole are further circumferentially formed in the side wall, corresponding to the piston, of the cylinder body. According to the low-frequency hydraulic pulse generating device and method, based on the working displacement ranges of the injection stages of a temporary-plugging diversion repeated hydraulic fracturing operation plugging agent, a prepad fluid, a sand-carrying fluid and a displacing fluid, low-frequency hydraulic pulse output in a hydraulic driving mode is achieved, and the temporary-plugging diversion repeated hydraulic fracturing effect can be improved overall.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Superfine particle tailing reservoir heightening and capacity expanding stacking-discharging structure capable of achieving one-time dam building by adopting center line method

ActiveCN111305210AIncrease storage capacityExtend production service lifeEarth-fill damsRock-fill damsWaste dumpAbutment
The invention discloses a superfine particle tailing reservoir heightening and capacity expanding stacking-discharging structure capable of achieving one-time dam building by adopting a center line method. The structure is formed by combining an original tailing blocking dam (1), a dam abutment flood intercepting trench (12), a first-stage heightening dam body (2), a second-stage heightening dam body (3), a third-stage heightening dam body (4),..., and an nth-stage heightening dam body; a row of medium-coarse tailing drainage blind drains (9) which are parallel to one another and perpendicularto the axis of the corresponding dam body are constructed in the portion on the top layer of each stage of heightening dam body; draining communication pipes (7) and underground water collecting pipes (11) are laid; drainage floral tubes (8) are buried in the medium-coarse sand drainage blind drains (9); and layers of high-strength anti-corrosion geogrid (6) are laid every 0.5-1.0 m of verticalinterval. According to the invention, solidification of fine particle tailings is accelerated, the mechanical strength index of the fine particle tailings is improved and increased, thus, the capacityof a tailing reservoir is remarkably increased, the production service life is prolonged, and meanwhile, the problems that the capacity of parts of waste dumps are not enough, and mining waste rock is stacked are solved.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES

Novel flavone-derived polymer nano-drug and application thereof to oncotherapy

The invention relates to a novel flavone-derived polymer nano-drug. The novel flavone-derived polymer nano-drug is obtained in the way that hydrophobic flavone micromolecules are in covalent linkage with heparin polysaccharide macromolecules through joint arms to form an amphiphilic graft polymer, and the amphiphilic graft polymer is self-assembled in a waterborne medium to constitute a primary combination strategy of the nano-drug in oncotherapy. Hydrophobic oncotherapy drugs with different action mechanisms are loaded under such intermolecular forces as a pi-pi stacking function and a hydrophobic driving function and incorporated into a nano-system, so that the internal water solubility, the stability and the targeting property of the hydrophobic oncotherapy drugs are effectively improved to realize a secondary combination strategy of the nano-drug in oncotherapy. The nano-system loaded with the oncotherapy drugs with different mechanisms can ensure cooperation and flexible selectionaccording to clinical requirements to realize tertiary combination strategy of the nano-drug in oncotherapy. Therefore, an oncotherapy mode which attaches importance to various treatment means can berealized, and the anti-tumor effect is maximized and optimized.
Owner:CHINA PHARM UNIV

Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer

The invention relates to a construction method for transforming cement concrete pavement with an embedded reinforced asphalt layer. A basal grouting is arranged in the horizontal direction under an original embankment. More than one geogrid vertical reinforcements are arranged in the vertical direction and are filled with foam concrete light-weight soil. A plate-bottom grouting is arranged above the geogrid vertical reinforcements and under the original cement concrete pavement. Blocking bodies are arranged respectively at the two ends of the plate-bottom grouting and are fixed onto side walls of the original embankment. A well-type connective trough is arranged in the original cement concrete pavement. A lower pavement layer, a stress absorption layer and an upper pavement layer are arranged in the well-type connective trough and on the original cement concrete pavement from bottom to top successively. A later paved asphalt pavement material and the original cement concrete pavement have an excellent connecting performance so that destroy in each structure layer in the pavement can be effectively prevented. The construction method can solve a problem of post-construction settlement and prolongs a service life of a road.
Owner:德达交通建设发展集团有限公司

Preparation method of high-transparency and high-dispersity white carbon black

InactiveCN111498859AUniform growthHigh transparencyAluminium silicatesSynthetic magnesium silicateSilicic acid
The invention discloses a preparation method of high-transparency and high-dispersity white carbon black. The method comprises the following operating steps: 1, synthesizing a magnesium aluminum silicate dispersion inducer: sequentially adding water and silicate into a reaction kettle while stirring, heating to 60-80 DEG C, adding a magnesium compound solution while violently stirring, and reacting to form magnesium / silicon-containing base solution slurry; dropwise adding an aluminum compound aqueous solution, adjusting the pH value of the slurry to 10-14 by using a saturated alkali solution,and continuously reacting to obtain a dispersion inducer magnesium aluminum silicate suspension; and 2, synthesizing a high-transparency and high-dispersity white carbon black covering layer by usingthe magnesium aluminum silicate dispersion inducer: adding the magnesium aluminum silicate suspension and bottom water into the reaction kettle, adding silicate, stirring and heating to 75-95 DEG C toenable the pH value of the base solution to be 8-10, adding silicate and an acidifying agent at the same time to maintain the pH value at 8-10, stopping adding the silicate, and continuing adding theacidifying agent until the pH value is 3.5-5.0 to obtain slurry of the high-transparency and high-dispersity high-white carbon black; and filtering, washing, drying and briquetting to obtain the granular high-transparency high-dispersity white carbon black product.
Owner:FUJIAN ZHENGSHENG INORGANIC MATERIAL

Micro-stress shelter pile foundation strengthening method

The invention discloses a micro-stress shelter pile foundation strengthening method, relating to the bridge pile foundation strengthening technology adopted in underground construction under the pile foundation of an urban bridge. The method comprises the step that micro-stress shelter piles are arranged around the bridge foundation or the pile cap for separating the stratum under the bridge foundation and within the surrounding range of the micro-stress shelter piles from the stratum beyond the surrounding range thereof. During the construction and installation of the micro-stress shelter piles, layered high-pressure grouting is implemented, and the piles are connected into a whole through the high-pressure grouting and due to the spreading the grout, thus forming a separation wall, reducing the stress redistribution effect transmission caused by underground space excavation, avoiding the great reduction of side frictional resistance of the piles, reducing the decrease of pile bearing capacity, simultaneously being capable of preventing the shifting of surrounding soil displacement towards the original pile body, effectively controlling the transverse deformation of bridge foundation and inhibiting the settlement of the original bridge piles caused by underground space excavation, and realizing convenient, fast and high-efficiency construction in restricted space.
Owner:UNIV OF SCI & TECH BEIJING

Shield tunneling machine shield tail synchronous embedded-type double-liquid grouting device

The invention discloses a shield tunneling machine shield tail synchronous embedded-type double-liquid grouting device comprising a first valve block, a second valve block and a shield body connecting block which are embedded in a shield tail. A liquid A passage, a liquid B passage, a piston passage and a water passage are arranged in each of the first valve block and the second valve block correspondingly, a piston rod is arranged in each piston passage, a piston is arranged in a piston cylinder, each piston rod is driven by a propelling cylinder, the liquid A passage and the liquid B passage positioned in the first valve block are communicated with the piston cylinder through a first communication passage, and the water passage positioned in the first valve block is communicated with the piston cylinder through a second communication passage. Position of the pistons is controlled by utilizing the propelling cylinders, so that overbreak clearance between a pipe piece and a tunnel stratum can be quickly made up after the shield tail is separated from the pipe piece in the process of shield tunneling, water seepage of joint and tail gap of the pipe piece is effectively prevented, and ground surface settlement is inhibited; the shield tunneling machine shield tail synchronous embedded-type double-liquid grouting device is suitable for various geographic conditions, simple to operate, less prone to being blocked and capable of improving construction efficiency.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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