62results about How to "Adjust aperture size" patented technology

The invention discloses a silicon-based cathode composite material for a lithium ion battery and a preparation method thereof. The cathode composite material is a Si/CuOx/C composite material (0<=x<=1) with a porous structure. Silicon with a porous structure is used as a base, and CuOx particles are inserted in the pores, and carbons with different forms are distributed on a surface and pore walls of the silicon-based material. The preparation method of the cathode composite material comprises steps that silicon material realizes pore-forming through an in situ catalytic reaction between silicon and halogenated hydrocarbon, and reaction condition parameters are regulated to control pore size, distribution and amount of porosity of the silicon material; a post-modification technology is employed to carry out modifications on the surface and the pore walls of the porous silicon, so as to obtain the Si/CuOx/C composite material with a porous structure. The porous silicon-based cathode composite material has low production costs, simple process and no pollution, and is suitable for industrialized production; besides the porous silicon-based cathode composite material has high charge and discharge capacity, small initial irreversible capacity and good cycle performance.

The invention relates to a method for manufacturing super capacitor electrode materials with high energy ratio, belonging to energy material technology and related field. The invention uses mechanical chemical treatment means to prepare porous carbon/electric conduction agent/polytetrafluoroethylene composite electrode materials. The prepared materials can evenly compound porous carbon/carbon black/polytetrafluoroethylene to form composite electrode materials composed of nanoes, thereby adjusting pore size of the porous carbon and improving utilization efficiency of the carbon pore; when preparing the super capacitor electrode using the materials, because the carbon black and the polytetrafluoroethylene are evenly dispersed in the porous carbon base by the mechanical chemical treatment, the size and the distribution of the pore diameter of the carbon pore are changed, so that the electrode has higher unit capacity, on the other hand, the carbon framework can also provide a good electric conduction channel for the carbon black corpuscules dispersed therein, equivalent internal resistance of the capacitor is reduced, so the capacitor has higher power and energy density.

The invention discloses a method for preparing super thermal isolation polymer materials from polymer nanometer hollow capsules. According to the method, firstly, hydrophilic and oleophilic macromolecular reversible addition fragmentation chain transfer reagents are used for preparing polymer nanometer capsules, then, inter-capsule cross linking agents are prepared, finally, the inter-capsule cross linking agents and the polymer nanometer capsule emulsion are mixed according to a mass ratio of capsule to inter-capsule cross linking agents of 2.5:1 to 0.8:1, the pH is regulated to be 3.0 to 6.8, the reaction lasts 30 minutes to 24 hours at the temperature being 60 to 90 DEG C, the emulsion is gelatinized, then, core paraffin wax in the nanometer capsules is replaced through tetrahydrofuran, and polymer nanometer porous materials are obtained through vacuum drying. The method has the advantages that the preparation process is simple, and the porosity and the pore size can be regulated through changing the solid content of the nanometer capsule emulsion, the consumption of etherified melamine formaldehyde resin and the self porosity of the nanometer hollow capsules. In addition, compared with the traditional thermal isolation materials, the porous materials have high mechanical strength.

The invention discloses an application of a porous separating membrane in a zinc-bromine flow battery. The porous separating membrane is prepared from more than one or two of polysulfone, polyketone, polyimide, polybenzimidazole, polyvinylidene fluoride, polyvinyl pyridine, polyacrylonitrile, polypropylene, polyethylene, polybutadiene or cellulose acetate; the aperture sizes in the porous separating membrane are 0.05-20nm; and the porosity is 20%-60%. The prepared membrane material can effectively achieve separation of different zinc ions and keep the ion selectivity of the membrane. Furthermore, the membrane material can achieve ion transport without introducing an ion exchange group; and the selection range of the flow battery membrane material is expanded.

The invention discloses staged porous charcoal, and a preparing method and applications thereof, and belongs to the field of material preparation and application. One or two of potassium citrate or sodium citrate, adopted as a raw material A, and one or more than two of calcium citrate, iron citrate or zinc citrate, adopted as a raw material B, are fully mixed; a template agent and an activating agent are generated through high-temperature carbonization and self-activation so that addition of extra template agents and activating agents is not needed; and the staged porous charcoal having a micropore-mesopore-macropore structure having three types of pores is prepared through one step, omitting a step of secondary activation. The preparing method is simple, short in period, low in cost andenvironmentally friendly. Through adjusting the mass ratio of the raw materials, the pore sizes and distribution of micropores, mesopores, and macropores in the staged porous charcoal can be adjusted.The prepared staged porous charcoal is wide in pore diameter distribution, high in pore capacity and high in specific surface area, and has a certain graphene structure. A solid microextraction probeprepared by utilizing the staged porous charcoal can achieve trace detection of organic pollutants in water environments.

The invention discloses a preparation method of a polydopamine modified imidazolyl nano particle composite nanofiltration membrane. The preparation method comprises the following steps: taking aromatic polyamine monomer molecules, an aldehyde compound and a dicarbonyl compound as reaction raw materials, carrying out polycondensation in an acidic aqueous solution to form imidazolyl nano particles,adding dopamine into an alkaline aqueous dispersion of the imidazolyl nano particles, carrying out oxidative polymerization to obtain polydopamine-modified imidazolyl nano particles, and finally, preparing the composite nanofiltration membrane on a porous ultrafiltration membrane by virtue of a surface coating-interface crosslinking method. The prepared polydopamine modified imidazolyl nano particle composite nanofiltration membrane has high permeation selectivity and strong anti-pollution stability, and has a good industrial application prospect.

The invention relates to a guide and guard device for rolling of profile steel with a special-shaped section. According to the technical scheme, fixed sliding blocks (7) on the two sides of a guide and guard supporting plate (2) are mounted in vertical strip-type regulating holes (5) of corresponding supports (1), the guide and guard supporting plate (2) is fixedly connected with the supports (1) through threaded rods (8) and nuts, and a guide and guard device body (3) is mounted at the middle position of the upper plane of the guide and guard supporting plate (2). A lower baffle (11) is mounted between the lower portions of two guide plates (14). Upper baffles (10) are correspondingly mounted between the upper portions of the two guide plates (14). The two guide plates (14) are arranged symmetrically. The two upper baffles (10) are connected with the corresponding guide plates (14). Side wing plates (13) are symmetrically mounted on the outer sides of the two guide plates (14). Guiding plates (12) are symmetrically mounted on the front sides of the two guide plates (14). A strip-type regulating block on the lower plane of each side wing plate (13) is mounted in a strip-type guide and guard regulating hole (6) in the guide and guard supporting plate (2). The side wing plates (13) are fixedly connected with the guide and guard supporting plate (2) through bolts. The guide and guard device has the advantages of being simple in structure, low in cost, convenient to maintain and high in universality.

The invention discloses a powder recovering and treating device applied to metal powder spraying. The powder recovering and treating device comprises a device body which is of a cavity structure. An opening is formed in one side of the top end of the device body. The two sides of the opening communicate with first sliding grooves correspondingly. A baffle is arranged in the opening. Two sets of first rolling balls arranged linearly are arranged at the bottom end of the baffle. A clamping plate is arranged on one side, away from the device body, of the baffle. Fixing blocks are arranged on the inner walls of the two sides of the device body correspondingly. Clamping grooves are formed in the sides, close to each other, of the two fixing blocks correspondingly. A screen plate arranged horizontally is arranged between the clamping grooves. Multiple first screen holes are formed in the screen plate. A micro vibrator is arranged in each clamping groove. An adjusting plate is further arranged in the device body. The adjusting plate is provided with second screen holes. The bottom end of the adjusting plate is connected with a rotating rod. The powder recovering and treating device is reasonable in design layout, avoids waste of raw materials, is convenient to move and can be used on many sites. Meanwhile, powder recovering quality and treating efficiency are improved, and the comfort level of users is improved.

The invention discloses a preparation method and performance test of a low-density hydrophobic polyimide aerogel material with a green and convenient preparation process. A water-soluble polyamide acid precursor is synthesized from a diamine monomer and a dianhydride monomer. Wet gel is continuously prepared by using the polyamide acid precursor, and further the hydrophobic polyimide aerogel is prepared by adopting processes such as freeze drying and thermal amidation. The aerogel prepared by the invention has the characteristics of hydrophobicity, suitability for various molding and pouring processes, simple preparation process, great reduction of organic matter volatilization in the preparation process and the like. The interior of the material is porous, the density is less than 0.1 g/cm<3>, the water contact angle on the surface of the aerogel can reach 120 degrees or more, and the aerogel has good thermal performance. The material has a large application space in the fields of heat insulation, catalysis, organic matter adsorption, air filtration and the like.

The invention relates to the field of materials and discloses a preparation method of a mesoporous material. The preparation method comprises the following steps: adding an acid or alkali solution into a precursor in a stirring state, performing hydrolysis to obtain a transparent solution, cooling the transparent solution and recycling ethyl alcohol; adding a template solution into the transparent solution in a stirring state, and adjusting the pH value of the mixed solution to be neutral by an acid or alkali solution for gelatinizing; smashing wet glue obtained by the gelatinizing; removing the template through water washing; carrying out suction filtration on the mixed solution after water washing to obtain white gel; and drying the gel, smashing, and sieving, thus obtaining the mesoporous material. According to the preparation method of the mesoporous material provided by the invention, an immobilized enzyme can be obtained by adding bioactive substances including enzymes into a reaction system in the preparation process. The experiment shows that the enzyme activity of the immobilized enzyme of the mesoporous material nearly keeps unchanged after the immobilized enzyme is repeatedly used.

The invention relates to a lens focusing and aperture adjusting imaging device. The device comprises an optical lens, an adjustment component, a focusing sleeve, a fixing plate, a metal box, a drivingcircuit board and an imaging detector. The adjustment component is provided with a boss structure and is used for rotatably fastening and connecting with the groove structure of the optical lens. Theinternal thread of the focusing sleeve is cooperated with the external thread of an aperture adjusting component so as to carry out adjusting and focusing. The fixing plate and the metal box are connected through four bolts so as to be used for fixing the focusing sleeve. The driving circuit board is used for driving the imaging detector. Compared with the prior art, by using the device of the invention, the aperture size of the optical lens can be adjusted, and lens focusing can be realized; and the structure is simple, dismounting is convenient, manufacturing cost is low and the device is stable and reliable.

The invention discloses an organic composite porous ceramic material and a preparation method thereof, and relates to the technical field of porous ceramic processing. The organic composite porous ceramic material disclosed by the invention is composed of silicon dioxide, diatomite, aluminum powder and modified cellulose. The preparation method comprises the following steps: uniformly mixing the components, grinding the mixture into mixed powder, adding a water-soluble adhesive and water into the mixed powder, uniformly mixing, carrying out freeze drying to obtain a porous ceramic precursor, and carrying out high-temperature sintering on the porous ceramic precursor. The organic composite porous ceramic material provided by the invention has very high porosity and uniform pore distribution, and the pore size and shape can be controlled. The organic composite porous ceramic material can also be used for storing hydrogen, has the characteristics of high hydrogen storage capacity, simplehydrogen absorption and desorption operation, high-temperature and high-pressure resistance and the like, is good in cycling stability and can be repeatedly used for multiple times, and the prepared product is high in strength and not easy to deform.

The invention discloses a concrete building surface defect repairing device and a repairing method thereof, relates to the field of concrete building surface defect repairing, and aims to solve the problems that existing concrete building wall surface repairing operation cannot achieve automatic treatment, so that the repairing efficiency is low, and certain danger exists during repairing operation. According to the technical scheme, the device comprises a movable vehicle body, a raw material box is fixedly installed on one side of the top end of the movable vehicle body, a first electric telescopic rod is fixedly installed on the other side, facing the movable vehicle body, of the raw material box, and a movable base is fixedly connected to the end of the first electric telescopic rod; and the movable base is slidably mounted at the top end of the movable vehicle body. The concrete surface defect repairing device can replace manpower to conduct repairing operation on defects of different sizes on the concrete surface, the repairing efficiency of the concrete surface defects is improved, and meanwhile the danger of repairing the concrete surface defects can be reduced.

The invention discloses a pair of three-claw-centering wire-pressing pliers. The three-claw-centering wire-pressing pliers comprise a plier opening, an accurate adjusting mechanism and handles; the three-claw-centering wire-pressing pliers are characterized in that the plier opening comprises an outer sleeve, an inner sleeve and crimping heads, wherein the outer sleeve is a fixed sleeve connected with an upper handle; the inner sleeve is a movable sleeve which is positioned in the center of the outer sleeve and connected with a lower handle; inner arcs which are deviated from the center are formed in positions of three equally-divided parts of 120 degrees on the inner side of the outer sleeve; three movement inner cavities are formed between the three inner arcs and the outer side wall of the inner sleeve; three column holes and three side holes are formed in the inner sleeve in a crossing manner; crimping heads sleeved with compressed springs are arranged in the three side holes respectively; the tail parts of the crimping heads prop against the corresponding inner arcs of the movement inner cavities; therefore, when the lower handle is kneaded upwardly to drive the inner sleeve to rotate, the tail parts of the crimping heads can be driven to move, in a manner of being tightly clung to the inner arcs; and meanwhile, the heads of the crimping heads can realize the wire-pressing function through extension in a central wire-pressing hole. By adoption of the three-claw-centering wire-pressing pliers, three-claw centering and guarantee of non-eccentricity in the wire-pressing process can be accurately accomplished under the conditions of lower cost and low material consumption.

The invention discloses a preparation method of a modified volcanic slag filter material and its application, belonging to the technical field of water treatment. The preparation method comprises thefollowing steps of: screening and pretreating volcanic slag, taking ferric chloride as a modifier, soaking the pretreated volcanic slag in a modification solution, drying after a certain time, calcining in a muffle furnace, and completing modification through multiple operations. The modified volcanic slag filter material prepared by the invention has larger specific surface area and developed pore structure, the method of the invention does not generate secondary pollution problems, and the volcanic slag is cheap and easy to obtain, the modification method and the adsorption process are simple to operate, the treatment effect is good, the treatment cost is greatly saved, and the method can be widely applied to the field of water treatment industry.

The invention discloses a mixing and stirring device for food processing and a using method of the mixing and stirring device. The mixing and stirring device for food processing comprises a mixing andbeating box, a supporting barrel, a transverse supporting spring, a mixing and beating mechanism and a screening plate, wherein the mixing and beating box is arranged in the supporting barrel and issuspended through the transverse supporting spring; the mixing portion and the beating portion of the mixing and beating mechanism are arranged in the mixing and beating box; the mixing portion of themixing and beating mechanism can convey lump materials of the mixing and beating box to a high end from a low end; the beating portion of the mixing and beating mechanism can smash the lump materialsof the mixing and beating box; the screening plate is provided with an aperture adjusting mechanism capable of adjusting apertures; and a dustproof receiving device is arranged under the screening plate. The mixing and stirring device for food processing is simple in structure and convenient to operate, different materials can be mixed when the lump materials are smashed, the lump materials are smashed and mixed thoroughly, and the efficiency is high.

The invention provides a preparation method of a polymer micro-filtration membrane. The preparation method comprises the following steps of: carrying out polymerization reaction on a sulfonic acid monomer containing double bonds in an organic solvent containing poly(phthalazinone ether sulfone ketone) under the action of an initiator to obtain a first reaction mixture; then heating to generate a crosslinking reaction to obtain a second reaction mixture; and finally carrying out film forming treatment to obtain the polymer micro-filtration membrane, wherein the poly(phthalazinone ether sulfone ketone) containing phthalazinone. According to the preparation method provided by the invention, the aperture size and the hole density of the polymer micro-filtration membrane can be simply and effectively adjusted by changing the proportions of raw material components in the reaction on the basis of pore-forming through interaction among polymer molecule chains; and meanwhile, reagents used in the preparation process are common reagents and are low in cost and easy for implementation of reaction conditions, and a pore-forming method is convenient and fast.

The invention relates to a die casting machining process and cutting system, and relates to the field of die casting production. The die casting machining process comprises the following steps of: a die preparation procedure, specifically, a die is preheated, and a release agent is sprayed; a melt melting procedure, specifically, the solid metal is melted to obtain liquid metal; a die-casting procedure, specifically, the liquid metal is injected into a die for die-casting forming to obtain a die casting; a cutting procedure, specifically, water cutting is performed on the die casting by using high-pressure water flow to obtain a part; and surface treatment, specifically, powder spraying, paint baking, oil spraying, oxidation, sand blasting, electroplating and the like are carried out on the part to improve the mechanical strength of the part. The invention has the effect of improving the die casting cutting precision.