105 results about "Porous sheet" patented technology

Sorbent materials for the adsorption of hydrocarbons and methods for manufacturing them are described. The sorbents include a slurry of activated carbon and a porous sheet layer permeable to hydrocarbons configured to remove emissions from air intakes. The methods for manufacturing the sorbent materials include providing both a hydrocarbon permeable layer and a slurry that includes the sorbent material, drying the slurry, and affixing the dried slurry layer to the surface of the hydrocarbon permeable layer.

This provides an improved dissolvable solid article with a specific aspect ratio. Such dissolvable solid article has a multilayer structure comprising two or more flexible, dissolvable, porous sheets, while each of which comprises a water-soluble polymer and a surfactant and is characterized by a Percent Open Cell Content of from 80% to 100% and an Overall Average Pore Size of from 100 μm to 2000 μm. The multilayer dissolvable solid article is characterized by a maximum dimension D and a minimum dimension z; and wherein the ratio of D / z ranges from 1 to 10.

The application discloses a zinc extraction process from secondary zinc oxide, and belongs to the technical field of zinc oxide preparation. In the rotary kiln roasting, composite porous flaky reducing carbon with waste paper, rice husk and wooden chips as main raw materials is used as a reducing agent. Compared with the commercially available anthracite, the composite porous flaky reducing carbon has low cost, realizes resource recycling, and has a large specific surface area and porous properties. A multi-level structure of flaky layers and pores is constructed, so that the contact sites of the composite porous flaky reducing carbon and the secondary zinc oxide are increased. The porous structure can avoid the caking of the material layer caused by the stacking and agglomeration of the flaky layers, and avoid the obstruction of gas flow, so that the pain points of the traditional reducing agent, such as local agglomeration and insufficient contact, are solved. The surface of the composite porous flaky reducing carbon is deposited with calcium oxide. The presence of the calcium oxide can react with a small amount of sulfur elements generated in the rotary kiln roasting process of the composite porous flaky reducing carbon, so as to generate calcium sulfate and reduce the content of sulfur dioxide.

The utility model discloses a riveting die for porous sheet metal parts, which relates to the field of riveting dies, comprises an upper die plate and a lower die plate, and is characterized in that the bottom end of the upper die plate is in sliding connection with the lower die plate; the eight fine adjustment assemblies are symmetrically arranged on the periphery of the upper mold plate and play a role in adjusting the limiting protrusions of the upper mold plate; the adjusting structure is fixed to one side of the forming plate of the lower die plate and plays a role in adjusting the position of the forming plate in the lower die plate, when the riveting die is used, the deviation angle of a part at the joint of the upper die plate and the lower die plate can be adjusted through the fine adjustment assembly, it is guaranteed that the position of the part in the die is accurate, and the riveting efficiency is improved. The upper die plate and the lower die plate can be in butt joint stably and accurately in the die assembly process, the positioning precision is improved, the position of the forming plate can be adjusted through the adjusting structure, and it is guaranteed that deviation does not occur in the riveting process.

The disclosure provides a metal ion doped lithium iron phosphate material and a preparation method and application thereof, and relates to the technical field of lithium batteries. The metal ion doped lithium iron phosphate material comprises flaky lithium iron phosphate and metal ions doped on the flaky lithium iron phosphate, and the flaky lithium iron phosphate has a porous structure. The method comprises the following steps: using an organic metal compound as a deposition raw material to deposit a carbon layer and metal oxide particles on the surface of a porous Fe2O3 flaky precursor to obtain a composite material; mixing the composite material, a lithium source and a phosphorus source according to a stoichiometric ratio, and then drying and sintering to obtain an M-LiFePO4 material. The M-LiFePO4 prepared by the disclosure has good uniformity and is not prone to agglomeration, inherits the two-dimensional flaky morphology of the precursor material and has a porous structure, has good rapid charging and discharging capacity, and improves the rate performance of the lithium iron phosphate material through doping of metal ions.

The application relates to a flow field for use in an electrolytic cell comprising one or more porous sheets having a corrugated structure. The electrolytic cell comprises a membrane, an anode, a cathode, an anode reinforcement layer, a cathode reinforcement layer, an anode flow field, a cathode flow field, and a bipolar plate assembly comprising an embedded hydrogen seal. The anode flow field includes one or more porous sheets having at least one straight edge, and wherein at least one of the porous sheets has the form of a corrugated pattern having a plurality of peaks and valleys whose axes are substantially aligned with one straight edge of the sheet. The anode flow field geometry simultaneously provides elasticity for efficient mechanical compression of the cell and well distributed mechanical support for anode reinforcement layers adjacent the anode flow field.

In specific embodiments, provided is a material for preventing adhesion of membranes in an ophthalmic surgery for treatment of glaucoma or the like without using mitomycin-C or the like. Particularly provided is such material, which is easy to handle and has no risk of histolysis or infections. In a production method of a preferred embodiment, prepared are: aldehyde-modified dextran (first reactant) having weight-average molecular weight of 10,000-5,000,000 and introduced aldehyde group-per-anhydrous glucose unit (mol / AGU) of 0.4-0.7; and succinic anhydride-added poly-L-lysine (second reactant) having weight-average molecular weight of 1000-100,000 and having residual amino group ratio of 80-99%; then, they are mixed together so that aldehyde group-to-amino group molar ratio becomes 0.9-1.1 and are reacted in presence of water so that polymer concentration becomes 8-20%; and a hydrogel produced by the reaction, or a suspension before gelation, is freeze-dried to produce a porous sheet having a thickness of 0.1-0.8 mm.

In specific embodiments, provided is a material for preventing adhesion of membranes in an ophthalmic surgery for treatment of glaucoma or the like without using mitomycin-C or the like. Particularly provided is such material, which is easy to handle and has no risk of histolysis or infections. In a production method of a preferred embodiment, prepared are: aldehyde-modified dextran (first reactant) having weight-average molecular weight of 10,000-5,000,000 and introduced aldehyde group-per-anhydrous glucose unit (mol / AGU) of 0.4-0.7; and succinic anhydride-added poly-L-lysine (second reactant) having weight-average molecular weight of 1000-100,000 and having residual amino group ratio of 80-99%; then, they are mixed together so that aldehyde group-to-amino group molar ratio becomes 0.9-1.1 and are reacted in presence of water so that polymer concentration becomes 8-20%; and a hydrogel produced by the reaction, or a suspension before gelation, is freeze-dried to produce a porous sheet having a thickness of 0.1-0.8 mm.

The present invention relates to an aerosol cooling material for cigarettes, which comprises a metal having a thermal conductivity of 10 W / m.K to 5000 W / m.K and is made of a porous foam or a porous sheet.

A method is disclosed herein. The method includes mixing (302) a plurality of metal powders to form a blended powder, pressing (304) the blended powder to form a porous sheet of compacted powder, cutting (306) the porous sheet to form a plurality of cross sections, performing (310) a diffusion bonding process on the plurality of cross sections to bond the plurality of cross sections together forming a near net shape preform, the near net shape preform being denser than the porous sheet, and (312) consolidating the near net shape preform to form a full density near net shape component.

A tool for mutually stacking and assembling porous sheet-shaped workpieces comprises a base, the base is further provided with a bottom plate, and a plurality of positioning holes which are formed at intervals are formed in the bottom plate; the linear bearing is fixedly arranged on the lower side of the bottom plate; the number of the guide rods corresponds to that of the linear bearings, one ends of the guide rods are arranged in the linear bearings in a penetrating mode through the positioning holes, and the other ends of the guide rods extend upwards along the bottom plate; according to the assembly tool provided by the embodiment of the utility model, a plurality of sheet-shaped workpieces with multiple holes can be stacked and assembled, and the coaxial precision of hole sites on the plurality of stacked workpieces can be ensured through the arrangement of the plurality of guide rods; in the process of stacking the workpieces through the tool, the efficiency of assembling and machining the workpieces can be improved.

A sheet-shaped porous titanium body is disclosed. The thickness of the sheet-shaped porous titanium body is 40 μm or more and 500 μm or less, and the porosity is 30% or more and 50% or less. The surface roughness of a first main surface of the sheet-shaped porous titanium body is lower than the surface roughness of a second main surface opposite the first main surface. In the peripheral portion of the sheet-shaped porous titanium body, the number of first protrusions having a height of 30 μm or more protruding from the first main surface is equal to or less than the number of second protrusions having a height of 30 μm or more protruding from the second main surface in the peripheral portion.

This porous sheet includes fibers containing particles of an organic foaming agent and resin. The ratio D (P) / D (F) of the particle diameter D (P) of the particles to the average small diameter D (F) of the fibers is 6.0 or less.

The invention provides a self-supporting gas diffusion electrode as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively preparing metal sources to be deposited into precursor solutions for later use; mixing the precursor solution according to the proportion of the metal source of the target catalyst layer to obtain a mixed solution; carrying out ultrasonic cleaning, oil removal and flushing on the cut porous sheet electrode for later use; soaking a porous sheet electrode in the mixed solution, then performing ultrasonic treatment for 1-10 minutes, and soaking for 10-30 minutes; taking out the porous sheet-shaped electrode and absorbing the residual mixed solution on the surface of the porous sheet-shaped electrode; and placing the soaked porous sheet electrode in a UV light environment with a wavelength of 185-254 nm for illumination for 4-48 h to obtain the self-supporting gas diffusion electrode. According to the preparation method disclosed by the invention, no binder is added, and the self-supporting gas diffusion electrode can be industrially prepared on a large scale.

Provided is a porous sheet having high biocompatibility and adhesive strength, and further having pliability and / or flexibility.　The porous sheet includes: a second gelatin having a hydrocarbon group introduced into a first gelatin; and an unreacted crosslinking agent dispersed in the second gelatin. The second gelatin includes a structure represented by formula (1).

The utility model discloses an efficient high-strength porous sheet metal part machining device which comprises a machining workbench, one side of the upper end of the machining workbench is fixedly connected with a supporting control frame, the upper end of the machining workbench is movably connected with a buffering discharging seat, the upper end of the supporting control frame is fixedly connected with a control air cylinder, and the upper end of the control air cylinder is movably connected with a buffering discharging seat. The buffering discharging base comprises an adjusting movable groove, a discharging connecting groove, a movable drawing hole, a guide fixing rod, an adjusting movable rod, a control motor, a waste collecting box, a movable supporting frame, a guide movable block, an inner penetrating connecting hole, a movable adjusting block, a penetrating threaded hole, a damping lifting base, an upper connecting cushion block, a limiting movable ring block, a damper and an elastic piece. The efficient and high-strength porous sheet metal part machining device can support and buffer the bottom of a sheet metal part, and can be adjusted within a certain range according to the punching position of the sheet metal part or sheet metal parts of different sizes.

Disclosed is a secondary battery. According to the present disclosure, the secondary battery includes a case, an electrode assembly disposed inside the case, a porous sheet disposed between the case and the electrode assembly and configured to temporarily accommodate an electrolyte inside the case or discharge the accommodated electrolyte, and a diffusion guide disposed on the porous sheet and configured to guide the electrolyte discharged from the porous sheet to flow inside the case.

The invention discloses a preparation method of a supported high-entropy metal oxide catalyst for photo-thermal methanol-water reforming hydrogen production. The preparation method is specifically implemented according to the following steps: step 1, preparing CeO2 gel; step 2, grinding the CeO2 gel obtained in the step 1 serving as a raw material to obtain CeO2 gel powder, and calcining the CeO2 gel powder to obtain a porous sheet CeO2 oxide; step 3, loading a plurality of metal ions on the porous sheet CeO2 oxide obtained in the step 2 to prepare multi-metal loaded CeO2 powder; and 4, calcining the multi-metal loaded CeO2 powder obtained in the step 3, and grinding to obtain the loaded high-entropy metal oxide catalyst. The problems of slow reaction kinetics, long activation time and low hydrogen production efficiency of the existing low-temperature methanol-water reforming hydrogen production catalyst in a temperature interval of lower than 150 DEG C are solved.

Provided is an apparatus for producing a slurry-impregnated sheet constituted of a fiber sheet or a porous sheet impregnated with a slurry prepared by dispersing particles in a solvent. The apparatus includes: a conveying device configured to convey the fiber sheet or the porous sheet; a coating device configured to meter and apply the slurry to the fiber sheet or the porous sheet; and an impregnation device disposed downstream of the coating device in a sheet conveying direction and configured to apply an external force to the fiber sheet or the porous sheet to impregnate the fiber sheet or the porous sheet with the particles. The coating device includes a die.

The utility model belongs to the technical field of membrane electrode testing, and particularly relates to a membrane electrode partition testing device. According to the technical scheme, the membrane electrode partition testing device comprises a testing table base and an external power source, a lower porous sheet-shaped material is fixed to the testing table base, a membrane electrode to be tested is arranged on the lower porous sheet-shaped material, a three-axis moving device is installed on the testing table base, and the three-axis moving device is connected with the external power source. The Z-axis end of the three-axis moving device is sequentially connected with a pressure control sensor, an elastic insulating plate, an electrode structure and an upper porous sheet material in a superposed manner from top to bottom, and the electrode structure is connected with a raw material water filling nozzle; the test board base is provided with an electrode interface, and the electrode structure and the electrode interface are electrically connected with an external power supply. The utility model provides a partition testing device for a membrane electrode, which can accurately and fully evaluate the electrochemical performance and distribution characteristics of the membrane electrode under the condition that the membrane electrode is not cut and damaged.

The invention discloses a CuO / In2O3 two-dimensional porous nanosheet gas sensitive material, a gas sensitive element and application of the gas sensitive element. A mixture of deionized water, ethanol and ethylene glycol is used as a solvent, indium nitrate is used as a precursor, and two-dimensional porous flaky indium oxide is obtained through hydrothermal and calcination treatment. Then, indium oxide is used as a matrix, copper oxide nanoparticles are compounded on the surface, and the CuO / In2O3 composite gas-sensitive material is obtained. The composite gas-sensitive material is a two-dimensional porous sheet, the two-dimensional porous sheet has a large effective surface area, the porous structure provides a rapid and continuous charge transfer channel and a gas diffusion channel, and CuO provides an alkaline site for adsorption of acidic H2S gas, so that the gas-sensitive material can be used as a gas-sensitive material for adsorption of acidic H2S gas. The CuO / In2O3 gas sensor has the advantages of high sensitivity, high selectivity, fast response and low detection limit on H2S gas at room temperature. The CuO / In2O3 composite gas-sensitive material prepared by the invention has a wide application prospect in the aspect of H2S gas detection, and the CuO / In2O3 composite gas-sensitive material is simple in synthesis process, short in synthesis time, low in cost and suitable for mass production.

The invention discloses a lithium ion battery diaphragm and a preparation method thereof, the lithium ion battery diaphragm comprises a base membrane and a coating on the base membrane, the coating comprises porous sheet ceramic and glass fiber, and the porous sheet ceramic is porous sheet alumina. The heat stability, the mechanical strength, the wettability and the ionic conductivity of the coating are enhanced through the synergistic effect of the glass fibers and the porous sheet-shaped ceramic, the glass fibers are inserted between pores of the porous sheet-shaped ceramic and gaps of the diaphragm, the effects of supporting and maintaining the stability of the pore structure are achieved, and the battery has long-term stable charging and discharging performance.

The invention relates to the technical field of amphibious automobiles, and discloses an amphibious automobile trim panel mounting structure and an amphibious automobile. The amphibious automobile trim panel mounting structure comprises an automobile door lower trim panel and an automobile door outer panel metal plate; the automobile door outer plate metal plate is of a hole-free metal plate structure, an upper welding support and a lower welding support are welded to the automobile door outer plate metal plate, a buckle piece and an installation hole are formed in the corresponding positions of the automobile door lower decoration plate respectively, and the buckle piece on the automobile door lower decoration plate is connected to the upper welding support in a clamped mode in the Y direction. The position of the mounting hole corresponds to the position of the lower welding support, the axis direction of the mounting hole is the Z direction, and the fixing piece penetrates through the mounting hole and a Z-direction through hole in the lower welding support in the Z direction, so that the vehicle door lower decoration plate and the vehicle door outer plate metal plate are fixed; the automobile door outer plate metal plate does not need to be perforated in the whole process, a water seepage channel can be completely eradicated from the source, the sealing ring at the upper waterproof buckle position and the lower waterproof gasket can form radial and axial double sealing, the requirement for 2 m water depth and long-term wading of an amphibious automobile is met, and electrical components in an automobile body are effectively protected.

Provided is an inter-cell structure which is suitable for maintaining a buffer function for relaxing stress from a lithium ion battery cell with high durability while achieving a size that is suited to the cell. Provided is an inter-cell structure for use in a battery module or a battery pack including a plurality of arrayed lithium ion battery cells, the inter-cell structure being disposed between adjacent cells among the plurality of cells. The inter-cell structure has: a bag body that defines a sealed space; and a fluid such as a gas and a porous sheet in the sealed space. The bag body is formed of a laminated film including a metal layer and a resin layer, and has a sealing end part in which the innermost layers of first and second film parts of the laminated film are joined to each other so as to seal the sealed space. The porous sheet is positioned at a distance from the sealing end part of the bag body. The bag body has, between the sealing end part and the porous sheet, a folded part in which the first and second film parts overlap with each other and are folded with the first film part being on the inner side.

The invention belongs to the technical field of air purification, and particularly relates to an activated carbon adsorbent with ultra-high molecular weight polyethylene fibers as a framework and a preparation method of the activated carbon adsorbent. The activated carbon adsorbent is of a porous sheet structure and comprises 85-95 wt% of activated carbon powder, 1-10 wt% of a polymer and 0.2-3.0 wt% of an auxiliary agent, wherein the polymer is ultra-high molecular weight polyethylene or a mixture of ultra-high molecular weight polyethylene and high-density polyethylene; the polymer presents a cross network skeleton structure in a fibrous form, and the active carbon powder and the auxiliary agent are attached to the polymer fiber. The activated carbon adsorbent has the advantages of extremely low dust capacity in the use process, high content of effective components, small bed resistance, high harmful gas adsorption rate and the like.

To provide a sheet with improved porous structure formation capabilities compared to conventional sheets. [Solution] A porous sheet containing a thermoplastic resin, inorganic particles, and silicone oil, having numerous pores. The porous sheet contains 30% by mass or more of inorganic particles, and the silicone oil and inorganic particles contained in the porous sheet satisfy a predetermined relationship. Preferably, the porous sheet has a plurality of stem fibers extending in one direction and fibril fibers extending between the stem fibers and having a smaller diameter than the stem fibers. Preferably, the plurality of stem fibers include one stem fiber and other stem fibers branched from that stem fiber, and also have voids between the stem fibers.

This invention discloses an automatic sheet metal flipping device for edge-folding units, involving a machining technology solution. It includes a movable conveyor roller, a roller base frame, a movable flipping suction cup gripper, and a flipping base frame. The device integrates feeding, centering, flipping, and conveying functions. Precise positioning is achieved through a servo-driven centering and alignment device. The movable flipping suction cup gripper can complete 180° flipping in both directions. Individual suction cup components are adjustable and adaptable to large-format, heavy-duty, irregularly shaped, and porous sheets. Servo control and synchronous belt drive ensure smooth operation and precise positioning. The frame is fixed with detachable bolts, and the bottom leveling feet adapt to different sites. It supports parallel operation and single-piece operation, and can be seamlessly integrated into existing automated production lines, effectively improving production efficiency and reducing scrap rates.

The invention discloses composite separation membrane slurry and a preparation method thereof, a reverse osmosis composite membrane and application, and the preparation method comprises the following steps: dispersing SiO2 particles and a surfactant in water, and mixing to obtain SiO2 dispersion liquid; moS2 particles are uniformly dispersed in the SiO2 dispersion liquid, and a silicon-molybdenum mixed liquid is obtained; grinding the silicon-molybdenum mixed solution by using a colloid mill until the particle size of MoS2 particles is less than 500nm to obtain silicon-molybdenum slurry; and finally, filtering, cleaning and dispersing the silicon-molybdenum slurry to obtain the composite separation membrane slurry. The MoS2 is stripped into a porous sheet structure by adopting a colloid mill and utilizing extrusion and friction acting force among particles, and the reverse osmosis composite membrane prepared from the MoS2 has the advantages of large flux, high desalination rate, controllable pore diameter and good hydrophilicity, is beneficial for reducing desalination pressure, and can be applied to the fields of seawater desalination, saline-alkali water desalination, sewage desalination treatment and the like.

To provide a porous sheet that is excellent in performance as a separator for an electrochemical element, in that it is thin but does not cause short circuits. The porous sheet is made of fibers and has a thickness of 4.8 to 30.0 μm, an air resistance of 1 to 1000 seconds / 100 ml, and a valley area of ​​1.0 to 38.0 mm as measured using a three-dimensional white light interference microscope (manufactured by BRUKER). 2 The present invention also provides an electrochemical element including this porous sheet as a separator for the electrochemical element.

The invention belongs to the technical field of composite nano materials, and particularly relates to a two-dimensional transition metal titanium carbide-platinum nano particle composite material and a preparation method and application thereof. The invention relates to a two-dimensional transition metal titanium carbide-platinum nanoparticle composite material. The two-dimensional transition metal titanium carbide-platinum nanoparticle composite material comprises a single layer of Ti < 3 > C < 2 > T < x > and platinum nanoparticles loaded on the single layer of Ti < 3 > C < 2 > T < x >, the single-layer Ti < 3 > C < 2 > T < x > is of a porous sheet-shaped structure, and the size is 0.5-5 [mu] m. The platinum nanoparticles in the obtained two-dimensional transition metal titanium carbide-platinum nanoparticle composite material can be uniformly loaded on the surface of the two-dimensional transition metal titanium carbide and are not easy to agglomerate; the two-dimensional transition metal titanium carbide-platinum nanoparticle composite material has anti-interference performance and long-term stability in biomolecule detection.