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Phosphonic acid-benzenesulfonic acid double modified carbon microspheres, and preparation method and application thereof
The present application relates to a kind of phosphonic acid-benzenesulfonic acid double modified carbon microspheres and its preparation method and application, belong to oil field chemical field.The method includes: S1 with biomass as raw material preparation original carbon microspheres;S2 original carbon microspheres are pre-oxidized and activated, obtain activated carbon microspheres;S3 activated carbon microspheres are phosphonated grafting reaction;S4 last perform sulfonic group grafting reaction.The present application also provides the phosphonic acid-benzenesulfonic acid double modified carbon microspheres prepared by this method, and the application of the phosphonic acid-benzenesulfonic acid double modified carbon microspheres in the preparation of water-based drilling fluid.In this phosphonic acid-benzenesulfonic acid double modified carbon microspheres, phosphonic acid group and benzenesulfonic acid group are introduced into the surface of carbon microspheres by stable covalent interaction, not easy to fall off in high temperature and high salt environment, can improve the stability of material in high temperature condition, to ensure that modified carbon microspheres in downhole complex working condition Long-term effect, make drilling fluid system can simultaneously withstand high temperature and high calcium ion double test.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
A transcritical CO2 air source heat pump system and its control method
The application discloses a transcritical CO2 air source heat pump system and a control method thereof. The transcritical CO2 air source heat pump system comprises a carbon dioxide compressor, a gas cooler, an electronic expansion valve, an outdoor fan, a cold storage device, a heat storage water tank, a high-temperature heat accumulator, a low-temperature heat accumulator and a floor buried pipe heat exchanger. The gas cooler comprises a first working medium pipeline and a first heat exchange pipeline for realizing heat exchange. The cold storage device comprises a second working medium pipeline and a second heat exchange pipeline for realizing heat exchange. The heat storage water tank comprises a hot end heat exchange pipeline and a cold end heat exchange pipeline for realizing heat exchange. The transcritical CO2 air source heat pump system can be controlled to be in various working conditions, such as single hot water production, refrigeration and hot water production, single heating, heating and hot water production and the like, by controlling the opening and closing of each component and valve, and is integrated and multipurpose to adapt to different requirements.
Owner:POWER RES INST OF STATE GRID SHAANXI ELECTRIC POWER CO LTD +1
UHPC light side ditch cover plate
ActiveCN224200007USolve self-importancesolve the costSewerage structuresClimate change adaptationArchitectural engineeringCivil engineering
The utility model relates to the technical field of constructional engineering, and provides a UHPC light side ditch cover plate which comprises a UHPC panel, a wave-shaped stiffening rib and a plurality of adjustable supporting bases, the UHPC panel comprises an anti-skid layer, a force bearing layer and an anti-crack layer which are arranged from top to bottom, the wave-shaped stiffening rib is arranged at the bottom of the UHPC panel, and the anti-skid layer is arranged at the bottom of the UHPC panel. The wave-shaped stiffening ribs comprise wave-shaped continuous structures arranged on the two sides of the UHPC panel in the length direction, a plurality of straight panel connecting ribs are connected between the two wave-shaped continuous structures, and the multiple supporting bases are arranged at the bottom of the cover plate and used for adjusting the height of the cover plate. According to the scheme, the problems that a traditional side ditch cover plate is large in dead weight, high in maintenance cost and the like are solved, remarkable technical advantages are formed in the aspects of safety, durability, economical efficiency and the like, construction is facilitated, and good application prospects are achieved.
Owner:山东高速工程检测有限公司 +1
A method for producing a continuous-fiber-reinforced polyamide composite laminate and the laminate obtained thereby
The application discloses a kind of continuous fiber reinforced polyamide composite laminated plate preparation method and the laminated plate obtained.First, continuous fiber reinforced polyamide unidirectional prepreg narrow strip and the prepreg narrow strip containing fiber powder are woven to form two-dimensional sheet, then the two-dimensional sheet is laid and designed hot-pressed into composite plate.In the present application, by selecting different relative viscosity resins and fiber powder length range, combined with hot-pressing process to realize the orientation of fiber micro-powder in the prepreg narrow strip of fiber micro-powder in the Z direction of composite plate, i.e., the thickness direction, thereby improving the interlaminar shear performance of laminated composite plate.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2
A measuring tool
Owner:ZHUHAI GREE INTELLIGENT EQUIP TECH RES INST CO LTD +2
Automatic packing device for bottled cleaning agent
The utility model discloses a kind of bottled cleaning agent automatic packing device, it includes conveying platform, positioning mechanism, encapsulation subassembly and adjusting mechanism.Conveying platform is equipped with slide rail and sliding block, and sliding block connects bearing plate;Positioning mechanism is connected first clamping arm and second clamping arm by elastic connecting rod, and inside is equipped with flexible gasket;Encapsulation subassembly includes lifting platform and encapsulation head, and encapsulation head bottom is equipped with heat sealing module and compression claw;Adjusting mechanism moves sliding block by screw rod drive.This device can accurately adjust bearing plate position, automatically adapt bottle size, ensure encapsulation sealing property and firmness, simultaneously reduce heat residue by cooling air flue, improve efficiency.Auxiliary support mechanism enhances stability, and is suitable for the automation packaging demand of multiple specifications bottle body.
Owner:LI HE BO (SHAN DONG) SHENG WU KE JI YOU XIAN GONG SI
Carbon-coated pre-magnesium silicon monoxide negative electrode material and preparation method thereof
PendingCN122091513AHigh porosityImprove ionic conductivityMagnesium silicatesCell electrodesCarbon coatingPorous layer
The invention discloses a carbon-coated pre-magnesium silicon monoxide negative electrode material and a preparation method thereof, the negative electrode material comprises a silicon core, a silicon-magnesium composite porous layer and a carbon-coated layer, the silicon-magnesium composite porous layer comprises MgSiO3 and Mg2SiO4 with porous characteristics, and the porosity is not less than 30%; the material shows a unique peak position and intensity relationship in an XRD diffraction pattern, and Mg2SiO4 is used as a main phase. According to the preparation method, through molten salt mediated low-temperature solid-phase reaction and addition of reducing gas during heat treatment, energy consumption is greatly reduced, a generated Mg2SiO4 crystal structure is more stable than traditional MgSiO3, and a porous structure (porosity is larger than 30%) formed through the cooperation reaction enables the material to maintain high capacity of 1621.49 mAh / g, meanwhile, the first efficiency is improved to 85.91%, and the cyclic expansion rate is reduced by 40% or above.
Owner:CNBM ZHEJIANG MATERIAL TECH CO LTD
An aircraft low-drag high-efficiency aerodynamic optimization method based on elite knowledge transfer
ActiveCN121683047Bquick lockImprove design iteration efficiencyGeometric CADSustainable transportationFlight vehicleClassical mechanics
The application relates to the technical field of aircraft aerodynamic design and optimization, and discloses an aircraft low-resistance high-efficiency aerodynamic optimization method based on elite knowledge migration, which comprises the following steps: determining design variables of an aircraft aerodynamic shape and setting geometric constraint conditions; constructing a search space of the design variables; generating an independent population for each subtask by using the search space; performing aerodynamic simulation on each individual in each population, calculating the fitness value of the individual by using a comprehensive objective function constructed by the application, so as to determine an elite individual; executing a cross-task elite knowledge migration mechanism in the evolution process of the individual of the population; independently searching each population by adopting a multi-task parallel collaborative optimization mode, and determining the updating mode of the population according to whether the migration operation is triggered; and finally determining the global optimal individual of each population as an aerodynamic design scheme of the corresponding subtask of the population.
Owner:XIAN MODERN CONTROL TECH RES INST
Method for arranging cooperative deformation monitoring points of existing subway upper cover and cooperative deformation monitoring system
PendingCN121980858AImprove sampling efficiencyImprove effectivenessGeometric CADDesign optimisation/simulationStructural deformationMonitoring site
The invention discloses a cooperative deformation monitoring point laying method and system for existing subway parking base upper cover development engineering, and belongs to the technical field of structural deformation monitoring. The method comprises the following steps: determining a cooperative deformation influence area; identifying a structural joint and a force flow transmission path in the area; dynamically laying settlement monitoring points based on a structural joint settlement threshold value, and continuously laying strain, corner and three-dimensional strain monitoring points along a force flow transmission path to form a linear candidate monitoring point set; generating a two-dimensional grid candidate point set in the influence area; and carrying out topological overlay analysis based on a Delaunay triangulation network and a Voronoi diagram on the two types of candidate point sets, deleting redundant grid points through a distance threshold value, supplementing monitoring blind area points through uniformity check, and outputting a final monitoring point coordinate set. According to the method, the problem that point distribution is not systematic or the cost is high in a traditional method is solved, and unification of systematicness, economical efficiency and space coverage uniformity of monitoring point distribution is achieved.
Owner:XIAN RAIL TRANSIT INVESTMENT & DEVELOPMENT CO LTD