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67 results about "Spherical pore" patented technology
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Porous foam with bionic lotus seedpod surface structure and preparation thereof
The invention provides porous foam with a bionic lotus seedpod surface structure and a preparation method of the porous foam, belongs to the technical field of photothermal conversion materials, and aims to solve the technical problem that a solar evaporator is poor in water evaporation performance and salt resistance. According to the invention, a vacuum solution pouring technology / salt template method / template auxiliary technology is combined to prepare the composite foam, and the composite foam has a surface hemispherical pore structure and a lower layer honeycomb hierarchical pore structure at the same time, which is benefited from unique surface and internal pore structures; the solar evaporator shows efficient and stable evaporation performance, high salt resistance, good self-cleaning capacity and the like in NaCl solutions with different concentrations, and the double-layer hierarchical pore composite foam has wide application prospects in sewage treatment and seawater desalination. The preparation method has the advantages of being simple in process, convenient to operate, controllable in surface pore structure and internal pore shape, capable of forming evaporators in complex shapes and the like.
Owner:FUJIAN UNIV OF TECH
Efficient and low-pollution garbage incinerator
The invention relates to the technical field of incinerators, and discloses an efficient and low-pollution garbage incinerator which comprises an incinerator body and an incinerator cover fixedly installed at the top end of the incinerator body, a mesh plate is fixedly installed on the inner wall, close to the bottom of the incinerator body, of the incinerator body, and an air inlet pipe communicated with the interior of the incinerator body is fixedly installed on the outer surface, located above the mesh plate, of the incinerator body. An exhaust pipe is fixedly installed at the top end of the furnace cover, a slag discharging opening and a slag scraping opening are formed in the outer surfaces, close to the upper side and the lower side of the mesh plate, of the furnace body in a penetrating mode, and a spherical hole is formed in the top end of the furnace cover in a penetrating mode. Through overall rotation of the feeding pipe, discharged garbage can be uniformly spread on the mesh plate when the feeding pipe rotates, and the garbage thrown onto the mesh plate by the feeding pipe each time can avoid the last throwing position, so that the situation that the garbage thrown at each time is in the same position is avoided; therefore, newly thrown garbage is accumulated on the garbage which is burning to extinguish flames, and the garbage burning effect is influenced.
Owner:XIAN ALPS ENVIRONMENTAL PROTECTION TECH CO LTD
Porous silicon nitride ceramic material and preparation method thereof
The invention belongs to the technical field of porous silicon nitride ceramics, and discloses a porous silicon nitride ceramic material and a preparation method thereof. The preparation method comprises the following steps: mixing silicon nitride ceramic powder, metal oxide powder and rare earth metal oxide powder, adding a pore forming agent and a grinding medium, mixing, and carrying out ball milling, drying, grinding and sieving to obtain ceramic powder; carrying out dry pressing molding on the ceramic powder to obtain a ceramic green body; carrying out glue discharging treatment on the ceramic green body to obtain a precursor; the precursor is subjected to ultrahigh-temperature rapid sintering treatment, and the porous silicon nitride ceramic is obtained; wherein the sintering temperature ranges from 1600 DEG C to 1900 DEG C. According to the porous silicon nitride ceramic prepared by the method, the porosity is wide and adjustable in range, and the porous silicon nitride ceramic with closed spherical pore morphology can be prepared.
Owner:XI AN JIAOTONG UNIV
Porous carbon material, preparation method thereof and silicon-carbon negative electrode material containing porous carbon material
The invention provides a porous carbon material, a preparation method thereof and a silicon-carbon negative electrode material containing the porous carbon material. The preparation method of the porous carbon material comprises the following steps: heating and carbonizing an organic carbon source in a protective atmosphere, keeping a certain vacuum degree at least when the temperature reaches the pyrolysis temperature of the organic carbon source in the carbonization process, and then performing or not performing activation to obtain the porous carbon material. The silicon-carbon negative electrode material comprises the porous carbon material and silicon coating and filling the surface and holes of the porous carbon material. According to the preparation method provided by the invention, the content of spherical pores and macropores in the porous carbon material is reduced, the content of columnar pores and cracked pores is increased, the pressure resistance of the porous carbon material and the silicon-carbon negative electrode material is improved, collapse of the silicon-carbon negative electrode material in the process of preparing an electrode by rolling is reduced, and the service life of the silicon-carbon negative electrode material is prolonged. And the silicon-carbon negative electrode material can maintain good electrochemical performance.
Owner:BEIJING CHJ AUTOMOTIVE TECH CO LTD +1
Porous ceramic material for electronic cigarette and preparation method thereof
The invention discloses a porous ceramic material for an electronic cigarette and a preparation method of the porous ceramic material, and relates to the field of porous ceramic materials. Cotton fibers loaded with nano calcium carbonate are used as a pore-forming agent, after high-temperature sintering, the cotton fibers can be carbonized at high temperature to form pores, calcium carbonate can be further decomposed on the pores to form micron-sized spherical pores, a multi-stage structure of'large-pore oil guiding and small-pore oil locking 'is formed, meanwhile, a carbon skeleton can be left after the cotton fibers are carbonized, and the pore-forming effect is improved. Supporting and reinforcing effects can be achieved in the porous ceramic material, and the risk of breakage is reduced; the porous ceramic for the electronic cigarette is placed in a KH570 silane coupling agent solution, a layer of film is formed on the surfaces of calcium oxide and the ceramic, the wear resistance of the surfaces is improved, erosion of chemical components in tobacco tar can be resisted, the service life of the porous ceramic for the electronic cigarette is prolonged, the lipophilicity of the treated ceramic surface is improved, and the porous ceramic has better tobacco tar adsorption and release performance. According to the prepared porous ceramic material for the electronic cigarette, the strength and the oil guiding performance of the porous ceramic material are improved.
Owner:周蒙恩
Catalyst for preparing isosorbide, preparation method of catalyst and method for preparing isosorbide through reaction of sorbitol and dimethyl carbonate
PendingCN120037980AOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsPolymer sciencePtru catalyst
The invention discloses a catalyst for preparing isosorbide, a preparation method of the catalyst and a method for preparing isosorbide through reaction of sorbitol and dimethyl carbonate. The catalyst for preparing the isosorbide comprises macroporous ion exchange resin, and the macroporous ion exchange resin is provided with spherical or sphere-like pore channels and comprises a styrene type resin matrix and functional groups, the functional group is derived from a product obtained by carrying out chloromethylation on the styrene type resin matrix and then reacting the chloromethylated styrene type resin matrix with a heterocyclic compound containing more than two N atoms and a derivative of the heterocyclic compound. The catalyst can efficiently catalyze the reaction of sorbitol and dimethyl carbonate to prepare isosorbide, and has the characteristics of easy separation and high selectivity.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Preparation method of inorganic hollow fiber membrane and inorganic hollow fiber membrane
The invention relates to a preparation method of an inorganic hollow fiber membrane and the inorganic hollow fiber membrane, and the preparation method comprises the following steps: a membrane casting solution preparation process: mixing inorganic powder, an additive, a pore-forming agent and a solvent to prepare a membrane casting solution, 100 parts by mass of the membrane casting solution contains 50-60 parts by mass of the inorganic powder, 5-15 parts by mass of the pore-forming agent, 5-8 parts by mass of the additive and the balance of the solvent; the prepared membrane casting solution forms an inorganic hollow fiber membrane precursor through a spinning technology, organic matters in the precursor are removed through a sintering process, and meanwhile, a uniform pore structure is formed in the membrane by burning off the spherical pore forming agent. And for a metal film in the inorganic hollow fiber membrane, the metal hollow fiber membrane can be obtained by continuously switching to roasting in a reducing atmosphere. The method for producing an inorganic hollow fiber membrane according to the present application can easily produce an inorganic hollow fiber membrane capable of achieving both high porosity and narrow pore size distribution.
Owner:CANGZHOU INSTITUTE OF TIANGONG UNIVERSITY +2
A porous abradable seal coating and a method of making the same
The present application provides a kind of porous abradable seal coating and its preparation method, the porous abradable seal coating includes base phase coating and spherical hole, the spherical hole is uniformly distributed in the base phase coating, the aperture of the spherical hole is 10-150 μm.The porous abradable seal coating provided by the present application has spherical hole, and the spherical hole is not easy to densify in the surface in the abrading process, in the abrading process, the place where coating is impacted and rubbed because the existence of spherical hole occurs crushing and produces retreat, and does not affect the combination of other places of coating, thus improves the abradability of coating, so that the abradability of coating can be maintained well in the whole service process, prolongs the service life of coating.
Owner:XI AN JIAOTONG UNIV
Diamond porous microsphere, grinding wheel abrasive material and preparation method and application of diamond porous microsphere and grinding wheel abrasive material
PendingCN121930028AGood self-sharpeningImprove grinding performanceOther chemical processesAbrasion apparatusSpherical poreGrinding wheel
The invention belongs to the technical field of grinding wheel abrasives, and particularly relates to a diamond porous microsphere, a grinding wheel abrasive and a preparation method and application thereof. The preparation raw materials of the diamond porous microspheres comprise mixed powder, a binder and water, the mixed powder comprises a first ceramic bond, diamond and a pore forming agent. The first ceramic bond, the diamond and the pore forming agent are used as raw materials for preparing the diamond porous microspheres, the diamond porous microspheres have natural pores and prefabricated spherical pores, the porosity is high, and the self-sharpening performance of the grinding wheel grinding material can be improved; the grinding wheel abrasive material is prepared through secondary air degreasing sintering of the diamond porous microspheres, a new three-dimensional pore structure is formed among the naturally stacked diamond porous microspheres, the grinding wheel abrasive material with a'natural pore + prefabricated spherical pore + stacked pore 'multi-stage pore structure is obtained, the cooling, lubricating and chip removal effects of a grinding wheel can be greatly improved, and the service life of the grinding wheel is prolonged. Therefore, the grinding performance and the service life of the grinding wheel are improved.
Owner:GUANGDONG UNIV OF TECH +1
Pure rolling supporting and cutting integrated reamer bit
The utility model discloses a pure rolling centering and cutting integrated reamer bit which comprises a drill rod, inserting grooves are evenly formed in the periphery of the bottom end of the drill rod, pure rolling centering and cutting assemblies are connected to the inner walls of the inserting grooves in a matched and inserted mode, and each pure rolling centering and cutting assembly comprises a sleeve and reaming pieces evenly and fixedly installed on the periphery of the sleeve. A spherical hole is formed in the outer wall of the reaming piece, the inner wall of the spherical hole is rotationally connected with a ball, a center screw hole is formed in the center of the inner wall of the drill rod head end, the inner wall of the center screw hole is in threaded connection with a center rod, and a reaming drill bit is fixedly installed between the sleeve and the reaming piece through a bolt. The reaming drill bit and the reaming pieces are arranged to be matched to conduct step-by-step reaming on the inner wall of the foundation hole, so that power loss of reaming is reduced, the reaming difficulty is reduced, the balls are rotationally connected to the outer walls of the reaming pieces, and friction between the reaming pieces and the foundation hole is reduced.
Owner:JIANGSU FENGJIA TOOLS CO LTD
Electrode catalyst of solid oxide fuel cell suitable for sulfur-containing fuel
The invention belongs to the technical field of solid oxide fuel cells, and particularly relates to an electrode catalyst of a solid oxide fuel cell suitable for sulfur-containing fuel. The NiMo-YSZ electrode catalyst with the straight hole and spherical hole composite structure is prepared through a tape casting-phase conversion method and a vacuum-assisted impregnation process; the mass transfer efficiency and the specific surface area are improved by a composite pore structure in the obtained catalyst, and Mo actively captures sulfur by virtue of dual mechanisms of surface selective adsorption and bulk phase chemical sulfur fixation and can be dynamically regenerated. H2S can be reduced from 120 ppm to 14 ppm, and the removal rate reaches 88%; when the catalyst is operated in sulfur-containing hydrogen and methanol for 300 hours, the performance stability is respectively improved by 160% and 125%, the decline rate is as low as 0.4 mV / h, 98% of initial performance is regenerated and recovered, the tradeoff bottleneck of'activity-stability 'is broken through, and reliable support is provided for efficient and stable application of sulfur-containing hydrocarbon fuel SOFC (solid oxide fuel cell).
Owner:FOSHAN UNIVERSITY
A negative carbon high-performance concrete and a preparation method thereof
The application relates to the technical field of building materials, and discloses a kind of negative carbon high-performance concrete and a preparation method thereof, adopt ferrochrome slag as aggregate, utilize slag powder, silica fume and waste stone powder to partially replace cement to prepare concrete, which not only reduces natural resource and energy consumption, reduces CO2 emission, but also promotes efficient utilization of industrial solid waste; in addition, the mechanical interlocking structure is formed between the spherical pores on the surface of ferrochrome slag and cement stone, which can improve the interface microstructure between aggregate and cement paste; at the same time, the olivine phase on the surface of the spherical pores dissolves and occurs carbonation reaction under high-temperature alkaline environment during high-temperature carbonization process, and needle-like magnesium carbonate crystals are generated in the spherical pores to fill the interface, thereby further optimizing the interface microstructure and improving the overall mechanical properties of the concrete.
Owner:SOUTHWEAT UNIV OF SCI & TECH
Porous GNP / PDMS composite material, preparation method thereof and application of porous GNP / PDMS composite material in flexible sensor
The invention discloses a porous GNP / PDMS composite material, a preparation method thereof and application of the porous GNP / PDMS composite material in a flexible sensor, and belongs to the technical field of flexible sensors and preparation of the flexible sensors. According to the preparation method, expanded polystyrene microspheres are taken as sacrificial templates to be combined with glucose, a spherical pore structure is constructed through a vacuum infiltration method, graphene is dispersed in a PDMS matrix by adopting a multi-step ultrasonic dispersion technology, and porous GNP / PDMS composite materials with different graphene contents are obtained. On the basis, a conductive electrode and a flexible packaging layer are combined to construct a high-sensitivity flexible sensor. Results show that the GNP / PDMS composite material containing 4 wt.% of graphene shows excellent mechanical properties, the elastic modulus is 2.43 MPa, the maximum tensile strength is 1.46 MPa, meanwhile, the recovery of more than 99.6% is maintained after 200 times of compression cycles, and the composite material shows very strong mechanical stability.
Owner:HARBIN ENG UNIV +1
Multi-element solid waste foam concrete and preparation method thereof
The invention discloses multi-element solid waste foam concrete and a preparation method thereof, and relates to the technical field of foam concrete. The multi-element solid waste foam concrete comprises slag, fly ash, ardealite, sodium dodecyl benzene sulfonate and water, the invention relates to an alkali-free concrete which comprises the following components in parts by mass: 250-350 parts of fly ash, 5-20 parts of aluminum powder and 0-20 parts of a liquid alkali-free accelerator, and further comprises the following components in parts by mass: 250-350 parts of fly ash, 5-20 parts of aluminum powder and 0-20 parts of a liquid alkali-free accelerator. Compared with the traditional foam concrete, the materials used in the invention are all industrial solid wastes, and cement is not doped, so that the carbon emission of cement production is reduced while the solid wastes are consumed and the solid waste stockpiling pressure is relieved. When the multi-element solid waste foam concrete is applied to an outer wall enclosure structure, due to the fact that the multi-element solid waste foam concrete is light in weight, has many spherical pores, excellent heat preservation performance and low dry density, the self-weight pressure of a high-rise building is reduced, cold and heat transmission paths are reduced, the heat conductivity coefficient is lower, and a large amount of energy consumed by refrigeration and heat is reduced.
Owner:CHINA MCC22 GROUP CORP LTD
Pore structure parameter calculation method based on pore type identification
ActiveCN121090590AAnalysis using nuclear magnetic resonancePermeability/surface area analysisNMR - Nuclear magnetic resonanceWell logging
The invention relates to the technical field of oil-gas exploration, in particular to a pore structure parameter calculation method based on pore type recognition, which comprises the following steps of: firstly, recognizing pore types and surface porosity through logging information and a rock core experiment, constructing a nuclear magnetic T2 spectrum based on the surface porosity, then recognizing the pore types and calculating the porosity of different pore types based on the logging information, and calculating the pore structure parameters of different pore types. The method comprises the following steps: firstly, calibrating the porosity of a nuclear magnetic T2 spectrum, then subdividing the nuclear magnetic T2 spectrum of matrix pores, corrosion pores and crack pores on the basis of the nuclear magnetic T2 spectrum subjected to porosity calibration, finally, splitting the nuclear magnetic T2 spectrums of different pore types into corresponding spherical pore spectrums and tubular throat spectrums on the basis of a bulb tube pore structure model, and calculating corresponding pore structure parameters. According to the technical scheme, the problems that most of laboratory image methods are qualitative analysis, the pores and the throats cannot be distinguished in a mercury injection experiment, the experiment measurement cost is high, data points are discrete, and nuclear magnetic resonance T2 spectrums of different pore types cannot be distinguished in current nuclear magnetic resonance logging are solved by identifying the pore types and calculating the pore structure parameters.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Preparation method and application of heavy residual oil hydrogenation protectant
ActiveCN118106002BCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsPtru catalystProcess engineering
The present invention aims to provide a method for preparing and applying a hydrotreating protectant for heavy residue oil, belonging to the field of catalyst preparation. The method includes the following steps: preparing an alumina sol and adding spherical carbon particles to the alumina sol; mixing the materials evenly and then forming droplets; drying and calcining the formed material to obtain an alumina support with spherical pores; hydrothermally treating the alumina support with spherical pores in an organic ammonium solution; drying and calcining the treated material to obtain another alumina support; impregnating the alumina support with an impregnation solution containing an active metal component; and drying and calcining the impregnated support to obtain the hydrotreating protectant. The hydrotreating protectant prepared by this method has large surface pores with good permeability and high internal pores that can accommodate metal impurities. This catalyst is suitable for the field of heavy residue oil hydrotreating.
Owner:SHANXI JUHUA ALUMINUM CO LTD
Combustion tube capable of being spliced
The utility model provides a splicing combustion tube, and belongs to the technical field of combustion tubes. Comprising a combustion tube body, and the combustion tube body comprises a tube head, a connecting tube and a bent tube; a clamping hole is formed in the outer wall of the pipe head; a spherical hole is formed in the side, close to the pipe head, of the connecting pipe. According to different shapes of furnaces, the tail end of the pipe head is inserted into the end part of the connecting pipe, the guide block on the inner wall of the pipe head is firstly connected with the limiting groove in the end part of the connecting pipe to guide the pipe head, and after the pipe head moves to the positioning ball, the pipe head is pressed forcibly, so that the positioning ball is clamped into the pipe head; according to the combustion pipe, the pipe heads are connected and fixed until the pipe heads move to the positions of the clamping holes and are clamped with the clamping holes, so that the pipe heads and the connecting pipes are connected and fixed, the steps are repeated, different numbers of connecting pipes and bent pipes can be connected, the adaptability of the combustion pipe body is improved, the combustion pipe body can adapt to different furnaces, and the economic cost is reduced.
Owner:CHANGXING BURNER GAS APPLIANCE
Chuck for pipeline welding and pipeline welding clamp
The utility model discloses a pipeline welding chuck and a pipeline welding fixture, which belong to the technical field of pipeline welding equipment, and comprise a fixed clamping block, a spherical hole, a round jack and a connecting column, the fixed clamping block is arranged on the surface of one end of the connecting column, the round jack is arranged in the connecting column and extends to the outer surface of the connecting column, and the spherical hole is arranged on the spherical hole. And the spherical hole is formed between the connecting column and the fixed clamping block and is communicated with the circular insertion hole. The problem that in the prior art, due to the fact that the fixing mode is single, the chuck is inconvenient to replace, and the angle is difficult to adjust, the application range is poor is solved. And the practicability and the universality are improved.
Owner:TIANJIN RUIAN RUIDA MACHINERY EQUIPMENT TECHNOLOGY CO LTD
High-temperature and high-pressure sealing electrical penetration assembly
The utility model discloses a high-temperature and high-pressure sealed electrical penetration assembly, relates to the technical field of electrical penetration assemblies, and is used for solving the problems that the existing penetration assembly is damaged due to factors such as vibration, thermal expansion and cold contraction in the operation process of a nuclear power station, and the stability of electric power and signal transmission cannot be ensured. The penetration piece comprises a glass sintering shell of a penetration piece main body part, wherein the glass sintering shell is connected with a flange through a clamping ring; a plurality of elastic steel ball assemblies are installed on the glass sintering assembly and matched with corresponding spherical holes in the flange to form a damping mechanism. And a combined metal O-shaped sealing ring is arranged on the end surface of one side of the glass sintering shell. Through the structural design, the radiation resistance, the high temperature resistance, the aging resistance and the sealing performance are improved, reliable electrical connection is provided in an extreme environment, and the problem that steering is needed in penetration piece installation is solved.
Owner:CNNC FUJIAN FUQING NUCLEAR POWER
Preparation method of formed test block containing prefabricated micropores
PendingCN121804940AMelting fastFreeze fastAdditive manufacturing apparatusPreparing sample for investigationCrystallographySpherical pore
The invention belongs to the field of metal additive manufacturing, and relates to a preparation method of a formed test block containing prefabricated micropores, which comprises the following steps: 1) obtaining an initial base material sample containing a flat and smooth surface; (2) forming spherical holes in the flat and smooth surface of the initial base material sample in a machining manner; 3) filling the spherical holes with a sublimable material, and curing the sublimable material in the spherical holes; 4) sealing the spherical hole filled with the sublimable material to obtain a base material sample after hole sealing; and (5) continuously forming on the base material sample after hole sealing until a formed test block containing the prefabricated micropores is formed. The invention provides the preparation method of the formed test block containing the prefabricated micropores, which can be compatible with metal additive manufacturing process characteristics and can be used for accurately prefabricating the controllable pores.
Owner:XIAN BRIGHT ADDTIVE TECH CO LTD
Auxiliary lighting equipment for mining equipment maintenance
The utility model relates to the technical field of lighting equipment, in particular to auxiliary lighting equipment for mining equipment maintenance, which comprises a base, a first powerful magnet is fixedly connected to the bottom end of the base, a U-shaped seat is rotatably connected to the top end of the base, a shell is rotatably connected to the middle of the U-shaped seat, and a lighting lamp is fixedly connected above one end of the shell. A clamping device is fixedly connected to one side of the shell, a second powerful magnet is fixedly connected to the upper portion of the other end of the shell, a containing groove is formed in the lower portion of the other end of the shell, a spherical hole is formed in the middle of the containing groove, a hook is rotatably connected to the interior of the spherical hole, and a spotlight is fixedly connected to the top end of the shell. During use, the LED lamp beads which are high in brightness and reasonably arranged are matched with the optical lens, so that the sufficient and uniform lighting effect can be achieved, all parts of mining equipment can be clearly lighted, and the maintenance efficiency is further improved.
Owner:SHANXI XINHANHUA MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
Galvanometer mechanism and laser processing device
This invention discloses a galvanometer mechanism and a laser processing apparatus. The galvanometer mechanism includes a carrier, a galvanometer, a drive module, and a first sealing member. The carrier has a mounting cavity and a spherical hole connecting the mounting cavity and the outside of the carrier. The galvanometer is disposed within the mounting cavity. The drive module is mounted in the spherical hole and partially extends into the mounting cavity to connect with the galvanometer. The drive module located within the spherical hole has a spherical surface, which rotatably engages with the spherical hole. The first sealing member is disposed between the hole wall and the spherical surface of the spherical hole and is arranged circumferentially around the drive module. The technical solution of this invention can achieve effective sealing of the optical path while simultaneously enabling galvanometer position adjustment.
Owner:SHENZHEN MAKER WORKS TECH CO LTD
Preparation method of composite wind power tower base mortar
ActiveCN118652091BHigh compressive strengthincrease surface contact areaCeramicwareAluminateHydration reaction
The present invention relates to the technical field of building materials, and more specifically to a method for preparing a composite wind power tower frame mortar. The method comprises the following steps: plasma modified composite cement; foamed spherical pore CaO·ZrO 2 Preparation of surface modified cement. The present invention is carried out by adding Ca(OAc) 2 and 2-3 parts by weight of Zr(NO 3 ) 4 ·5H 2 Preparation of CaO·ZrO 2 In the process of obtaining the gel, a foaming agent is added, ball milling and calcination are performed to obtain foamed spherical CaO·ZrO 2 , foamed spherical CaO·ZrO with porous structure 2 It can increase the surface contact area during the mixing process with surface modified cement to increase the bonding capacity, and provide a stable framework, so that when the sulphoaluminate cement undergoes hydration reaction to form calcium aluminate, it can better fill the gaps after the mortar hardens, maintain a stable hardened structure, and maintain a high compressive strength from the early to late stages of the mortar hardening.
Owner:BEIJING ACAD OF BUILDING ENG
Functionalized bioactive glass as well as preparation method and application thereof
PendingCN121377506AImpression capsInorganic non-active ingredientsCell adhesionRegenerative medicine
The invention discloses functional bioactive glass as well as a preparation method and application thereof, and relates to the technical field of regenerative medical materials.The functional bioactive glass provided by the invention takes silicon, calcium, phosphorus and sodium as basic components, a porous structure is constructed by introducing nano zinc oxide (ZnO), and hydrophilicity and dispersity are improved by utilizing short amylose surface grafting. The nano zinc oxide is used as a pore-forming template and is selectively dissolved out in the subsequent steps to form sphere-like pores with the pore diameter of 1-30nm and the porosity of 30-70%, so that physical support is provided for cell adhesion and bone tissue ingrowth. The short amylose is grafted on the surface of the glass through a covalent bond of an amino silane coupling agent, and hydroxyl (-OH) on a molecular chain of the short amylose and water molecules form a hydrogen bond, so that the contact angle of the material is obviously reduced, and particle aggregation is effectively inhibited.
Owner:CHONGQING INNOVIT REGENERATIVE MEDICINE TECHNOLOGY CO LTD
Iron tailing-based composite artificial soil as well as preparation method and application thereof
The invention provides iron tailing-based composite artificial soil as well as a preparation method and application thereof. The artificial soil comprises an iron tailing-based porous aggregate and a functional compound component loaded on the iron tailing-based porous aggregate, the iron tailing-based porous aggregate has a three-dimensional network pore structure formed by mutually connecting fiber type pores and spherical pores in series. Through the synergistic effect of the porous aggregate and the functional compound component, the functions of water permeation, balance keeping and nutrient slow release are achieved, and the problems of iron tailing resource utilization, mine ecological restoration and degraded soil treatment are solved.
Owner:INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
A high-efficiency and low-pollution garbage incinerator
The present invention relates to the technical field of incinerators, and discloses a high-efficiency and low-pollution garbage incinerator, comprising a furnace body and a furnace cover fixedly mounted on the top of the furnace body, wherein a mesh plate is fixedly mounted on the inner wall of the furnace body near the bottom thereof, an air intake pipe connected to the interior of the furnace body is fixedly mounted on the outer surface of the furnace body located above the mesh plate, an exhaust pipe is fixedly mounted on the top of the furnace cover, a slag discharge port and a slag scraping port are respectively penetrated through the outer surface of the furnace body near the upper and lower sides of the mesh plate, and a spherical hole is penetrated through the top of the furnace cover. The present invention enables the feed pipe to rotate as a whole, so that the feed pipe can evenly spread the discharged garbage on the mesh plate when rotating, and the garbage put on the mesh plate by the feed pipe each time can avoid the last placement position, so as to avoid the garbage put in the same position each time, resulting in the new garbage being piled up on the burning garbage to extinguish the flame, thereby affecting the garbage incineration effect.
Owner:XIAN ALPS ENVIRONMENTAL PROTECTION TECH CO LTD
Three-dimensional co-culture organoid chip
ActiveCN222476626Ureduce exchangeimprove consistencyTissue/virus culture apparatusSpherical poreMechanical engineering
The utility model discloses a three-dimensional co-culture organ-like chip which comprises a micropore culture unit, the micropore culture unit comprises a bottom plate and a surrounding edge formed at the edge part of the bottom plate, and micro culture holes are uniformly distributed on the bottom plate; the micro-culture holes are hemispherical holes, or the micro-culture holes are composed of vertical cylindrical holes and hemispherical holes connected to the lower ends of the cylindrical holes. The bottoms of the micro-culture holes of the micro-pore culture units are hemispherical, cells are deposited at the bottoms of the micro-culture holes due to gravity after being inoculated, and a three-dimensional structure is formed under the action of mechanical force; when the depth of the micro-culture hole is deepened to a certain degree, the material exchange at the bottom of the hole is reduced, so that a low material exchange environment can be simulated; when the microporous culture unit and the culture device are combined for use, co-culture of organoids and other cells can be realized, and various co-culture systems can be realized by controlling the liquid level of a culture medium.
Owner:CHONGQING UNIV CANCER HOSPITAL
A process for preparing fine-grained diamond grinding tools through in-situ solidification
This invention discloses a process for in-situ solidification preparation of fine-grained diamond grinding wheels, comprising the following steps: (1) preparation of a microemulsion pore-forming agent; (2) preparation of a diamond forming slurry; (3) in-situ solidification and forming of the diamond grinding wheel; (4) drying of the diamond grinding wheel green; and (5) sintering of the diamond grinding wheel. Compared with ceramic-bonded diamond grinding wheels prepared by the traditional dry pressing method, the ceramic-bonded diamond grinding wheels prepared by this invention have a more uniform microstructure, and the uniformly distributed spherical pores within the sintered body can better accommodate chips and improve the self-sharpening properties of the grinding wheel. The diamond grinding wheels prepared using this invention not only improve grinding efficiency but also reduce the surface roughness of SiC wafers, demonstrating significant potential for promotion and application.
Owner:CHINA NONFERROUS METALS (GUILIN) GEOLOGY AND MINING CO LTD
Preparation method of high-thermal-conductivity graphene foam with uniform spherical pore structure
The invention belongs to the field of thermal management materials, and particularly relates to a preparation method of high-thermal-conductivity graphene foam with a uniform spherical pore structure. The method comprises the following steps: carrying out ultrasonic dispersion treatment on a graphene oxide solution, uniformly mixing the graphene oxide solution with a polymer microsphere emulsion, and preparing a composite film through an ordered assembly method; then carrying out heat treatment on the composite film, and preparing reduced graphene oxide foam while removing the microspheres; and carrying out graphitization treatment on the reduced graphene oxide foam to obtain the graphene foam with high thermal conductivity. The introduction of the polymer microspheres enables the graphene foam to form a uniform porous structure, and induces a part of graphene sheets to be vertically arranged, so as to form a continuous high-thermal-conductivity network, and at the same time promotes defect repair and grain growth in the graphitization process, so as to significantly improve the thermal conductivity of the graphene foam. The graphene foam prepared by the method disclosed by the invention has the excellent performances of small density, uniform spherical pore structure, low contact thermal resistance, high thermal conductivity, high temperature resistance, adjustable pores and the like.
Owner:INST OF COAL CHEM CHINESE ACAD OF SCI
Thin film stop valve
Owner:ANHUI ZHONGYI VALVE GRP CO LTD