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Litchi-shaped hollow polymer microspheres as well as preparation method and application thereof
The invention belongs to the field of petrochemical engineering, and particularly relates to a litchi-shaped hollow polymer microsphere as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing litchi-shaped polymer hollow microspheres by adopting an inverse emulsion polymerization method, uniformly dispersing a water-soluble initiator and a water-soluble monomer solution in an oil-phase continuous phase under the emulsification action of a surfactant, and initiating polymerization in a water-in-oil reaction system through modified mesoporous microspheres loaded with metal copper quantum dots. Because the initiation rates of the water-soluble initiator and the metal copper quantum dots are different, a litchi-shaped structure is presented on the surface of the microsphere, and then the template is etched to form the litchi-shaped hollow-structure microsphere. The hollow structure in the microsphere improves the elastic deformation capacity of the microsphere, and the litchi-shaped appearance of the microsphere can play a better plugging effect, so that the dual functions of'displacement 'and'plugging' of the microsphere are really realized.
Owner:SUZHOU CHUXIN MOYI TECH CO LTD
Plate laser cutting platform and laser cutting process
ActiveCN119077163AHelps dissipate heatNot easy to reboundLaser beam welding apparatusLaser cuttingWorkbench
The invention relates to a plate laser cutting platform and a laser cutting process, and relates to the technical field of laser cutting equipment.The plate laser cutting platform comprises a workbench and a laser cutting head arranged on the workbench, and the laser cutting head comprises a laser generator and a nozzle coaxially arranged at the bottom of the laser generator; a moving assembly for driving the laser cutting head to move in the X direction, the Y direction and the Z direction and a fixing assembly for fixing the special-shaped workpiece are arranged on the workbench, the laser cutting head is arranged towards the workbench, the laser cutting head is coaxially sleeved with a mounting cylinder, and four sets of baffles are rotationally arranged at the bottom of the mounting cylinder; the four groups of baffles are uniformly distributed at intervals along the circumference direction of the mounting cylinder, the four groups of baffles are in one-to-one correspondence with four side plates of the special-shaped workpiece, and gaps for metal chips generated by cutting to sputter outwards are reserved between the bottom sides of the baffles and the special-shaped workpiece. The special-shaped workpiece cutting device has the effects of being beneficial to cutting special-shaped workpieces, prolonging the service life of the nozzle and improving the cutting quality.
Owner:WUHAN GN LASER EQUIP MFG CO
Underground engineering dynamic water step grouting plugging and leakage stopping method capable of detecting water flow channel
ActiveCN119084041AAccurately detect the degree of developmentReal-time monitoring of conductivityMining devicesUnderground chambersWater flowWater leak
The invention discloses an underground engineering dynamic water step grouting plugging and leakage stopping method capable of detecting a water flow channel, and belongs to the technical field of underground engineering grouting and water plugging. The method comprises the steps that firstly, in the underground engineering mining process, a water leakage area is surveyed and detected, and the general channel and position of flowing water flow are judged; a grouting hole arrangement scheme is set, and step-by-step grouting is carried out; in the water leakage area, viscous slurry obtained by mixing a first grouting material A and a first grouting material B is used for blocking the flowing water channel; after the flowing water channel is blocked, a second grouting material is injected to reinforce the total cross section of the water leakage area; finally, the flowing water and gushing conditions of the grouting holes and the water flow channels are observed, theoretical knowledge is combined for checking, and the grouting and water plugging effect is analyzed. According to the method, the grouting and water plugging effects are improved by adopting the methods of reconnaissance and detection, step-by-step grouting and nondestructive detection, effective plugging and reinforcement of a water leakage area are realized, and the safety and stability of an underground structure are ensured.
Owner:SHANDONG UNIV OF SCI & TECH
Flame-retardant inorganic quick-setting material and preparation method thereof
The invention relates to a flame-retardant inorganic quick-setting material and a preparation method thereof, and the flame-retardant inorganic quick-setting material is prepared from the following raw materials: sulphoaluminate cement, aluminum-magnesium hydrotalcite, phosphorus slag powder, waste PBO fiber, an accelerator, a water reducer, a functional auxiliary agent, and 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The functional auxiliary agent comprises structural units introduced by the following monomers: 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, diphenyl (4-vinyl phenyl) phosphine oxide, 1, 3-bis (oxirane methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 10-(4-vinyl phenyl)-10H-phenoxazine and itaconic acid. The material is high in strength, remarkable in rapid hardening and flame-retardant effect, and safe and environment-friendly to use.
Owner:CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD
Preparation method and application of core-shell structure silicon dioxide blocking agent with rigid inside and soft outside for marine drilling fluid
The invention relates to a preparation method and application of an inner-rigid outer-soft core-shell structure silicon dioxide blocking agent for marine drilling fluid, and belongs to the field of deepwater oil and gas drilling. N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are polymerized and grafted on the surface of nano silicon dioxide to form the silicon dioxide blocking agent with a core-shell structure and a rigid inside and a soft outside; by means of rigid plugging of a nano material and deformation filling flexible plugging of a high-molecular polymer, shale micro-nano pores are efficiently plugged with rigid inside and flexible outside, so that the stability of a well wall is maintained, meanwhile, secondary generation of hydrates is effectively inhibited, and the safety and efficiency of deepwater drilling are improved; the plugging agent provided by the invention reduces the demand on a large number of thermodynamic inhibitors, not only saves the cost, but also has the characteristic of environmental protection.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Pavement water seepage detection device for road construction
PendingCN119413685Aimprove accuracyeasy to operateRoads maintainencePermeability/surface area analysisGraduated cylinderStructural engineering
The invention relates to the technical field of road surface detection, and particularly discloses a road surface water seepage detection device for road construction, which comprises a measuring cylinder, a first valve, a second valve, a base, a rotating assembly and a supporting seat, the bottom side of the measuring cylinder is provided with a water outlet, and the bottom side of the base is provided with a groove; a first mounting hole and a second mounting hole which are communicated with the groove are formed in the top side of the base, the first mounting hole is communicated with one port of the first valve, the other port of the first valve is communicated with a water outlet of the measuring cylinder, and the second mounting hole is communicated with one port of the second valve; according to the road surface water seepage detection device for road construction, liquid paraffin is adopted for blocking a road surface outside the water seepage range, operation is easy, time is short, and meanwhile the influence of road surface runoff on water seepage detection is reduced.
Owner:LINYI DONGCHEN ROAD & BRIDGE ENG CO LTD
Low-smoke halogen-free flame-retardant cable
ActiveCN119274867AReduce maintenance costslow costClimate change adaptationInsulated cablesRubber ringElectrical conductor
The invention relates to the technical field of cables, in particular to a low-smoke halogen-free flame-retardant cable which comprises a plurality of conductor wire cores, the conductor wire cores are sleeved with isolation layers, the multiple isolation layers are sleeved with an inner sheath, the inner sheath is sleeved with a functional protection assembly, the functional protection assembly is wound with a binding tape, and the binding tape is wound with an outer sheath. The binding tape is sleeved with an outer sheath. The function protection assembly comprises a plurality of circular rings arranged outside the inner sheath in a sleeving mode, a cooling assembly is fixedly connected between every two adjacent circular rings, and isolation assemblies for preventing ignition points from extending from the spontaneous ignition point of the cable to the two sides are installed on the outer sides of the circular rings and comprise a plurality of elastic plates made of magnetic metal and fixedly connected with the circular rings. Limiting grooves are formed in the sides, away from the circular rings, of the elastic plates, and the multiple elastic plates are sleeved with rubber rings. The problem that the cost of protecting the cable when the existing cable is blocked by the bridge frame to move along the direction parallel to the cable at a short-circuit spontaneous ignition point is solved.
Owner:ANHUI TIANYUAN CABLE
Nut tapping machine
ActiveCN222470988UOmit manual deliverysave human effortThread cutting feeding devicesThread cutting machinesMachineTransfer mechanism
The utility model belongs to the technical field of nut machining equipment, and particularly relates to a nut tapping machine. Comprising a working table top, a material conveying mechanism is arranged on the working table top, a to-be-machined nut transmitted in the material conveying mechanism enters a transferring mechanism from the discharging end, the transferring mechanism drives the to-be-machined nut to move to the clamping range of a clamping mechanism, the clamping mechanism clamps the nut, and the nut clamped by the clamping mechanism is located at the machining position; the effects that manual feeding is omitted, manpower is liberated, and meanwhile the production efficiency is improved through the arrangement of the transfer mechanism are achieved.
Owner:QUZHOU TIANLI FASTENERS CO LTD
Slope supporting mechanism for rock-soil foundation pit construction
InactiveCN222161305Utilt angle adjustmentImprove the blocking effectClimate change adaptationExcavationsStructural engineeringGeotechnical engineering
Owner:QINGDAO GEOLOGICAL ENGINEERING SURVEY INSTITUTE (QINGDAO GEOLOGICAL EXPLORATION DEVELOPMENT BUREAU) +1
Mine water disaster treatment grouting device and method
PendingCN119084027Aclose contactEasy to installUnderground chambersMaterial fill-upRubber ringStructural engineering
The invention relates to the technical field of mine water disaster treatment, in particular to a mine water disaster treatment grouting device and method.The mine water disaster treatment grouting device comprises a grouting pipe, a mounting base, a supporting plate, an elastic rubber ring, a grouting cavity, a grouting assembly, a bottom plate, two fixing components, a connecting rod, a sliding block, an inserting rod, a telescopic rod and a spring; when the elastic rubber ring is subjected to pressure from gushing water, the supporting plate can support the elastic rubber ring, so that the elastic rubber ring deforms and expands towards the periphery, and the elastic rubber ring is in tight contact with the mine wall; the telescopic rod is used for limiting the spring and counteracting partial pressure on the mounting seat; deformation of the elastic rubber ring is limited through the supporting plate, part of pressure borne by the elastic rubber ring is shared through the mounting base and the spring, the elastic rubber ring can be tightly attached to the mine wall, the plugging effect is improved, and therefore the problems that according to an existing device, the rubber ring is prone to impact deformation, effective plugging is difficult, and water damage is still prone to being caused are solved.
Owner:JIAOZUO COAL GRP ZHAOGU (XINXIANG) ENERGY CO LTD
Emulsion slow crosslinking type plugging gel and preparation method thereof
ActiveCN119529171Alow initial viscosityGel forming time is controllableDrilling compositionAnthraquinonesPolymer science
The invention provides an emulsion slow crosslinking type plugging control gel, which is in an oil-in-water type, and is prepared from the following raw materials in percentage by weight: 25 to 40 weight percent of nonionic monomer, 0.5 to 2 weight percent of dihydroxy anthraquinone, 5 to 16 weight percent of anionic monomer, 0.002 to 0.2 weight percent of initiator and the balance of water. The emulsion comprises the following components in percentage by weight: 10 to 35 percent of deionized water, 15 to 30 percent of non-polar solvent, 2 to 8 percent of emulsifier, 1 to 4 percent of emulsifying aid and 0.5 to 1.5 percent of phase inversion agent. According to the plugging adjusting gel, the modified functional monomer dihydroxy anthraquinone is added, and the dihydroxy anthraquinone and monomers such as acrylamide are copolymerized to form oil-in-water type polymer gel, so that the initial viscosity is low, the strength and the plugging rate are high, and the gelling time is controllable.
Owner:PETROCHINA CO LTD
Equipment for recovering ethylene glycol from ethylene glycol production wastewater
InactiveCN119118265AImprove discharge efficiencyheating evenlyOrganic compound preparationHydroxy compound preparationPulp and paper industryGlycol synthesis
The invention relates to the technical field of ethylene glycol recovery tanks, and discloses a device for recovering ethylene glycol from ethylene glycol production wastewater, the device comprises a water bath kettle, the outer wall of the water bath kettle is fixedly connected with a support shell, the periphery of the top end of the inner wall of the support shell is fixedly connected with four fixing strips, and the top of the support shell is fixedly connected with a top plate; the top of the fixing strip is fixedly connected with a distillation shell, the bottom end of the distillation shell is arranged in the water bath kettle, the water bath kettle is started, water in the water bath kettle is heated, heat energy is transmitted to the bottom end of the distillation shell, ethylene glycol wastewater in the distillation shell is heated, and therefore ethylene glycol in the ethylene glycol wastewater is distilled and recycled. Meanwhile, a motor is started and drives a rotating shaft to rotate, the rotating shaft drives a stirring paddle to rotate, and the stirring paddle stirs the ethylene glycol wastewater in the distillation shell in the rotating process, so that the ethylene glycol wastewater can be uniformly heated by heat, and the distillation efficiency of the ethylene glycol wastewater is improved.
Owner:FUYANG FENG CHI CHEM CO LTD
Concrete strength detection device
Owner:QINGDAO LVFAN CHANGYUN ENVIRONMENTAL PROTECTION BUILDING MATERIALS CO LTD
Three-dimensional structure ferrous phosphate pigment with corrosion early warning capability and preparation method of three-dimensional structure ferrous phosphate pigment
ActiveCN119218955Ahigh densityExtended service lifeChemical industryPhosphorus compoundsPhosphate ionFerrous salts
The invention provides a preparation method of a three-dimensional structure ferrous phosphate pigment with corrosion early warning capability, which comprises the following steps: preparing a ferrous ion-containing solution for providing ferrous ions, the ferrous ion-containing solution contains soluble ferrite and a surfactant and does not contain oxidizing ions, the ferrous ion-containing solution is in an acidic environment; preparing an initial mixed solution for providing phosphate ions and ammonium ions; atomizing and spraying the initial mixed solution into a ferrous ion-containing solution to obtain an intermediate mixed solution, carrying out ultrasonic refining on the intermediate mixed solution by utilizing an ultrasonic oscillation and microwave heating auxiliary device, heating and carrying out heat preservation to obtain a final mixed solution; and filtering the precipitate in the final mixed solution, transferring the precipitate to a vacuum environment, and carrying out high-temperature heating treatment to obtain the three-dimensional structure ferrous phosphate pigment with the corrosion early-warning capability, which can have the corrosion early-warning capability.
Owner:LANXI MAGNESIUM MATERIALS RESEARCH INSTITUTE
High-temperature-resistant high-strength resin blocking agent and preparation method thereof
ActiveCN119193122Ahigh strengthImprove toughness and strengthProductsReagentsPolymer scienceDiaminodiphenyl ether
The invention relates to the technical field of resin plugging, and discloses a high-temperature-resistant high-strength resin plugging agent and a preparation method thereof.The resin plugging agent is prepared from, by weight, 40-70 parts of epoxy resin, 5-15 parts of diluent, 5-10 parts of modified filler, 0.5-1 part of emulsifier, 1-1.5 parts of coupling agent, 6-20 parts of composite curing agent and 0.5-1.5 parts of imidazole microcapsule; the modified filler is prepared by firstly preparing nano cellulose loaded with metal ions and then modifying the nano cellulose loaded with the metal ions with tannic acid; the composite curing agent comprises POSS (Polyhedral Oligomeric Silsesquioxane) and 4, 4-diaminodiphenyl ether; the imidazole microcapsule takes 2-methylimidazole as a core material and polyvinyl alcohol as a shell material. According to the high-temperature-resistant high-strength resin blocking agent provided by the invention, through the synergistic effect of all the components, the obtained blocking agent is good in fluidity, high in toughness, high in strength, good in heat resistance, good in sealing performance and good in blocking effect.
Owner:CHENGDU BAIN PETROLEUM TECH SERVICE CO LTD
Multi-cluster interlayer / in-crack temporary plugging diversion fracturing process and product preparation method
The invention discloses a multi-cluster interlayer / in-fracture temporary plugging diversion fracturing process and a product preparation method, and particularly relates to the technical field of petroleum and natural gas exploitation, the fracturing process comprises the steps of dividing fracturing sections according to the physical property of a horizontal section reservoir of a coal-bed gas well, monitoring and automatically adjusting parameters during drifting, injecting prepad fluid to form a main fracture, and injecting sand adding fluid in a stepped mode. Preparing and injecting a temporary plugging material, injecting prepad fluid again to form a new crack, injecting sand-adding fluid into the new crack, replacing the sand-carrying fluid with clear water after fracturing, discharging the fluid and monitoring. The preparation method of the temporary plugging material comprises the steps of raw material mixing, extrusion granulation, drying, secondary extrusion granulation and the like, and the performance of the temporary plugging material is ensured through the measures of a specially designed screw structure, accurate control of temperature and humidity, addition of an auxiliary agent and the like. According to the method, the longitudinal crack coverage rate and the oil and gas recovery rate are increased, accurate control is achieved, the formation damage rate and the accident rate are reduced, it is ensured that the quality of the temporary plugging material is stable, and the formation permeability recovery rate is increased.
Owner:SHAANXI ZHONGLI HECHUANG ENERGY TECH CO LTD
Inorganic / organic nano-composite plugging agent for shale drilling and preparation method of inorganic / organic nano-composite plugging agent
ActiveCN119639437Agood deformabilityImprove the blocking effectDrilling compositionNanoparticleWell drilling
The invention discloses an inorganic / organic nano composite plugging agent, which is prepared from the following raw materials in parts by weight: 0.7 to 3.5 parts of modified nano particles, 10 to 50 parts of alkenyl amide monomers, 0.5 to 3 parts of alkenyl associated monomers, 20 to 50 parts of alkenyl sulfonic acid monomers, 10 to 20 parts of alkenyl cationic monomers and 0.5 to 1.0 part of initiators, the modified nano-particles are formed by carrying out surface modification on nano-particles by adopting a coupling agent. According to the invention, by introducing a flexible polymer chain segment with a proper amount of association, strong adsorption and other effects into rigid nanoparticles, the deformability of the nanoparticles and the connection force between the nanoparticles and a shale stratum are improved, so that the plugging capability of the plugging agent on multi-scale micro-pores and micro-cracks of the shale stratum is improved; and the plugging agent has the characteristics of wide particle size distribution, physical and chemical synergistic plugging effect, good high-temperature stability, simple preparation method, easily available raw materials and the like, and is suitable for drilling leakage of shale formations.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Toilet waterproof structure and construction method thereof
InactiveCN119507579Aless quantityImprove waterproof performanceClimate change adaptationBuilding material handlingStructural engineeringMechanical engineering
The invention relates to the technical field of toilet waterproofing, and provides a toilet waterproof structure and a construction method thereof.The toilet waterproof structure is arranged at the junction of a dry area finished surface and a wet area finished surface and sequentially comprises a threshold stone, a bonding layer arranged on the lower surface of the threshold stone and a waterproof layer arranged below the bonding layer from top to bottom; the upper surface of the threshold stone is flush with the upper surface of the dry area finished surface, the upper surface of the threshold stone is higher than the upper surface of the wet area finished surface, and the waterproof layer is laid on the upper surface of the structure base layer; the two sides of the waterproof layer extend to the positions below the dry area finished face and the wet area finished face respectively, and the waterproof layer comprises a first area arranged below the wet area finished face, a second area arranged at the junction of the threshold stone and the wet area finished face, a third area arranged below the threshold stone and a fourth area arranged below the dry area finished face. The waterproof structure has the beneficial effect that the waterproof effect of the doorsill of the toilet is improved.
Owner:FUJIAN DAHUA CONSTR ENG CO LTD
Logistics warehousing system
The invention discloses a logistics warehousing system, and relates to the technical field of logistics warehousing, the logistics warehousing system comprises a roller conveyor, a fixed table is erected outside the roller conveyor, and a storage rack with a rotatable angle is mounted at the top of the fixed table; the pushing mechanism and the jacking mechanism are located in the middle of the roller conveyor and are oppositely arranged in an up-down structure, and the jacking mechanism is used for jacking and supporting goods in the middle of the roller conveyor; the limiting mechanism is mounted on the storage rack, and the jacking mechanism is used for pushing the goods by the pushing mechanism and releasing the blocking of the goods by the limiting mechanism by jacking the limiting mechanism. By means of the arrangement mode that the pushing mechanism, the jacking mechanism and the limiting mechanism are matched, goods can be conveniently stored on or moved out of the storage rack, a carrying robot does not need to be additionally used, the goods on the storage rack are moved out and blocked by the bending stop block under the elasticity of the compression spring, and falling damage of the goods is reduced.
Owner:SUZHOU HUAXIA LOGISTICS CO LTD
Bypass blocking method and device, medium, electronic equipment and program product
The invention discloses a bypass blocking method and device, a medium, electronic equipment and a program product. The method comprises the following steps: responding to a plurality of sub-packets of a client greeting message, analyzing the plurality of sub-packets in sequence according to the sequence of serial numbers until a complete target field is obtained, dividing the client greeting message into the plurality of sub-packets by a client, sending the sub-packets to a server, and in the analysis process, sending the sub-packets to the server; caching a reference field of the last extension field of the currently parsed sub-package as a parsing basis of the next to-be-parsed sub-package; extracting a domain name from the complete target field; and if the domain name belongs to the target type domain name, sending a reset message to the server and / or the client to block communication between the server and the client. Therefore, SNI cross-packet analysis can be efficiently completed, the blocking success rate of the communication connection between the client and the server is improved, and the blocking effect of the public cloud domain name is improved.
Owner:BEIJING ZITIAO NETWORK TECH CO LTD
Expansion fistula plugging stent and implantation system
InactiveCN222130767Uavoid circulationImprove the blocking effectSurgeryDilatorsFistulaBiomedical engineering
The utility model relates to an expansion fistula plugging support and an implantation system, the expansion fistula plugging support is used for plugging a fistula opening formed between a first cavity and a second cavity which are adjacent, and the expansion fistula plugging support comprises a first fixing support, a second fixing support and a blocking film. The first fixing support is in a hollow tube shape and is provided with a near end, a far end and a first tube cavity extending between the near end and the far end in the axial direction, and the first fixing support is arranged in the first cavity channel. The second fixing support is arranged in the orificium fistulae and the second cavity, the second fixing support is provided with a first end and a second end, and the first end is connected with the first fixing support. The blocking film is arranged on the first fixing support or / and the second fixing support and used for blocking the orificium fistulae.
Owner:JIANGSU PROVINCE HOSPITAL (THE FIRST AFFILIATED HOSPITAL OF NANJING MEDICAL UNIVERSITY) +1
Inorganic quick-setting filling material and preparation method thereof
The inorganic quick-setting filling material comprises a material A and a material B. The material A is prepared from the following components in parts by weight: 25-35 parts of sulphoaluminate cement, 30-40 parts of blast furnace slag, 10-20 parts of waste gypsum, 1-3 parts of recycled alumina fiber, 5-10 parts of volcanic ash and 0.8-1.2 parts of (3, 6-diamino acridine-9-yl) boric acid. The material B is prepared from the following raw materials in parts by weight: 4 to 6 parts of functional water-soluble resin, 1 to 2 parts of sodium 3-(N-morpholinyl)-2-hydroxypropanesulfonate, 0.5 to 0.8 part of sucralose, 0.1 to 1 part of sodium lignin sulfonate, 0.8 to 1.2 parts of 1, 3, 5-triglycidyl-S-triazinetrione and 0.1 to 0.5 part of sodium N-(trimethoxysilylpropyl) ethylenediamine triacetate. The material is good in rapid hardening effect, high in compressive strength, good in flame-retardant and antistatic performance and long in service life.
Owner:CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD
Kevlar-polybenzoxazine aerogel and preparation method thereof
ActiveCN119391040AImprove the blocking effecthigh strength propertiesBulk chemical productionPolymer scienceNanofiber
The invention discloses a Kevlar-polybenzoxazine aerogel and a preparation method of the Kevlar-polybenzoxazine aerogel. The Kevlar-polybenzoxazine aerogel obtained by the preparation method disclosed by the invention has the characteristic of high strength. Through introduction of the Kevlar nanofibers, a cross-linked interpenetrating structure is formed between the Kevlar nanofibers and a polymer of a selected benzoxazine monomer, and the mechanical strength of the Kevlar-polybenzoxazine aerogel is further improved. Therefore, the Kevlar-polybenzoxazine aerogel prepared by the preparation method disclosed by the invention has better mechanical properties, and the compression stress can reach 3.974 MPa under the strain of 3%.
Owner:CHANGSHA RONGLAN MACHINERY
Polyimide / polydimethylsiloxane super-hydrophobic composite coating and preparation method thereof
ActiveCN119307177AImprove hydrophobicityGood moldabilityAnti-corrosive paintsPolyurea/polyurethane coatingsImidePolymer science
The invention discloses a polyimide / polydimethylsiloxane super-hydrophobic composite coating and a preparation method thereof.The preparation method comprises the steps that firstly, under nitrogen protection, diamine monomers and polydimethylsiloxane are dissolved in an organic solvent, then dianhydride monomers are added in batches, stirring reaction is conducted, and a polyimide / polydimethylsiloxane prepolymer is prepared; adding an organic dispersion liquid of modified GO into the polyimide / polydimethylsiloxane prepolymer to prepare composite bottom layer slurry, coating the surface of a base material with the composite bottom layer slurry, and performing programmed thermal imidization treatment to prepare a composite bottom layer; and coating the surface of the composite bottom layer with a suspension of an adhesive and fluorinated modified SiO2, and curing at room temperature to obtain the polyimide / polydimethylsiloxane super-hydrophobic composite coating. The composite coating has good long-acting corrosion resistance.
Owner:SHAANXI UNIV OF SCI & TECH
Intelligent lightning interceptor and lightning surge pulse protection method
ActiveCN119134206AImprove the correction effectImprove the blocking effectEmergency protection data processing meansEmergency protective arrangements for limiting excess voltage/currentAtmospheric sciencesLightning surges
The invention relates to the technical field of intelligent sensing thunder and lightning interceptors, in particular to an intelligent thunder and lightning interceptor and a lightning surge pulse protection method, and the method comprises the steps: measuring a thunder and lightning current sequence when thunder and lightning occur through a thunder and lightning current recorder, dividing the thunder and lightning current sequence to obtain thunder and lightning current subsequences, and calculating the thunder and lightning change rate of each thunder and lightning current; determining the lightning magnetic field deviation degree of each lightning current based on the difference between the lightning change rates of each lightning current and the adjacent lightning current and the average value of the lightning change rates of all lightning currents in the lightning current sub-sequence, and obtaining the lightning magnetic field interference intensity of each lightning current by combining the difference between each lightning current and the average value of the left and right adjacent lightning currents. Calculating a lightning magnetic field correction coefficient of each lightning current, and correcting each lightning current in the lightning current sub-sequence; and intercepting thunder and lightning by adopting a thunder and lightning interceptor according to the corrected amplitude spectrum and energy spectrum of the thunder and lightning wave. The lightning current data precision can be improved, and the lightning interception accuracy is ensured.
Owner:SHANDONG QULEI TECH DEV CO LTD
Sealing enhancement type knife gate valve
ActiveCN222334544Ureduce resistanceQuick opening and closingOperating means/releasing devices for valvesSlide valveGate valvePhysics
The utility model discloses a sealing enhancement type knife gate valve. According to the technical scheme, the gate valve is characterized by comprising two half valve bodies connected oppositely, a U-shaped sealing strip limited between the two half valve bodies, a gate plate capable of making contact with the sealing strip, a valve rod driving the gate plate to move, a handle used for driving the valve rod to move and filler allowing the gate plate to penetrate through and located at ports of the half valve bodies. The two half valve bodies are provided with sealing grooves for jointly containing the sealing strip, the face, attached to the sealing strip, of the gate plate is provided with a sealing part protruding towards the sealing strip, and the sealing strip is provided with an attaching groove partially matched with the sealing part. The sealing part is partially inserted into the attaching groove and tightly attached to the inner wall of the attaching groove, so that the sealing part cannot move in the axis direction of the half valve body relative to the attaching groove, and the problems that in the prior art, opening and closing are difficult, the needed torque is large, and leakage is generated due to the fact that a gate plate is prone to deviation are solved.
Owner:ZHEJIANG LIANGGAO VALVE CO LTD
Gallium oxide junction barrier Schottky diode and preparation method thereof
PendingCN119317124AImprove the blocking effectincrease contact areaDielectric permittivitySchottky diode
The invention discloses a gallium oxide junction barrier Schottky diode and a preparation method thereof, and relates to the technical field of Schottky diodes. The diode comprises a cathode, a gallium oxide substrate and a gallium oxide drift layer which are sequentially stacked from bottom to top, wherein the upper surface of the gallium oxide drift layer is of a boss structure; the boss structure comprises a convex part and a shoulder part; the first dielectric layer comprises a dielectric layer A of which the relative dielectric constant is greater than or equal to 9 and a dielectric layer B of which the breakdown electric field intensity is greater than or equal to 8MV / cm, which are stacked from bottom to top; the anode is positioned on the surface of the lug boss; the second dielectric layer is positioned on the surface of the lug boss and on the side surface of the anode; the metal field plate is located on the second dielectric layer; the P-type semiconductor layer covers the metal field plate, the second dielectric layer, the side surface of the convex part, the surface of the shoulder part and the surface of the first dielectric layer; and the third dielectric layer covers the side surface of the anode part, the surface of the P-type semiconductor layer and the surface of the first dielectric layer part. The device can bear higher reverse breakdown voltage.
Owner:HANGZHOU FUJIA GALLIUM TECH CO LTD
Nano-modified CO2 response foam plugging agent and preparation method thereof
ActiveCN119286494AImprove stabilityImprove the blocking effectDrilling compositionPhysical chemistrySilicon dioxide
The invention belongs to the technical field of oil exploitation foam plugging agents, and particularly relates to nano-modified CO2 multi-chain alkyl amidine, a CO2 response foam plugging agent, a preparation method and application. The CO2-responsive multi-chain alkyl amidine provided by the invention is obtained by electrostatic adsorption of an active adsorption center (tertiary carbon or tertiary nitrogen) of the multi-chain alkyl amidine and part of negatively charged nano silicon dioxide-calcium carbonate, is sensitive in stimulation response to CO2, has good foaming amount, foam stability and temperature and salt resistance, is environment-friendly and easy to degrade, and has a good application prospect. The foam plugging agent can avoid pollution of an oil layer and plugging of a stratum and can be used for preparing a CO2 response foam plugging agent.
Owner:TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
TBC battery structure and preparation method thereof, and TBC battery
PendingCN121865753AReduce parasitic absorptionExcellent anti-shadow blocking functionFinal product manufactureElectrical batteryBattery cell
The invention discloses a TBC battery structure, a preparation method thereof and a TBC battery, in the structure, a P region and an N region are respectively provided with a P-type / N-type doped polycrystalline silicon passivation layer, and an oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region. The preparation method comprises the step of preparing the P-type / N-type doped polycrystalline silicon passivation layer and the oxygen-doped polycrystalline silicon layer on the P region and the N region. In the structure, the oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region, so that the P region and the N region can be effectively separated, an excellent shadow shielding resisting function of a corresponding assembly can be realized, and the generating capacity of the assembly in a shadow shielding environment can be further improved. According to the preparation method, the design of depositing multiple tunneling oxide layers and polycrystalline silicon layers at a time, the design of a laminated mask, a new isolation mode, an efficient cleaning process and the like are adopted, the problems that an existing TBC battery preparation process is tedious, boron-doped polycrystalline silicon laser ablation residues exist, the investment and generation cost is high and the like are effectively solved, and the preparation method is a brand-new TBC battery route.
Owner:HUNAN RED SOLAR NEW ENERGY SCI & TECH CO LTD
Bacillus velez, bacterial agent and application thereof in prevention and treatment of pathogenic bacteria diseases
ActiveCN116987628BEnhanced inhibitory effectImprove the blocking effectBiocideBacteriaBiotechnologyMicrobial agent
The present invention discloses a Bacillus Velez, a microbial agent and an application thereof in the prevention and treatment of pathogenic bacteria and diseases, and relates to the technical field of the prevention and treatment of pathogenic bacteria and diseases. The Bacillus Velez provided by the present invention exhibits a strong inhibitory effect on the growth of pathogenic bacteria hyphae. It has a significant antagonistic effect on a variety of pathogens and a strong blocking effect on the infection cycle of pathogens. Based on the above characteristics, the Bacillus Velez provided by the present invention can be developed into a biocontrol agent and a biological pesticide, and can be applied to agricultural production and pesticide research. Therefore, the present invention provides a good strain resource for the future development of microbial agents for the biological prevention and treatment of edible fungi diseases.
Owner:SHANGHAI ACAD OF AGRI SCI