47results about How to "Good structural consistency" patented technology

The invention discloses a partition-optimized ultrathin VC with the thickness of 0.1-0.4 mm and a preparation method. The ultrathin VC comprises an upper cover plate and a lower cover plate, and the upper cover plate and the lower cover plate are welded. Each of the upper cover plate and the lower cover plate comprises an evaporation section, a heat insulation section and a condensation section; the surface of the evaporation section of the upper cover plate is of a super-hydrophilic cavity-shaped micro-nano structure, the surface of the heat insulation section of the upper cover plate is of asuper-hydrophilic equal-width groove micro-nano structure, and the surface of the condensation section of the upper cover plate is of a super-hydrophobic conical micro-nano structure; and a super-hydrophilic conical micro-nano structure is arranged on the surface of the area of the evaporation section of the lower cover plate, a super-hydrophilic cactus-like wedge-shaped groove micro-nano structure is arranged on the surface of the area of the heat insulation section, and a super-hydrophilic conical micro-nano structure is arranged on the surface of the area of the condensation section. The invention further discloses a preparation method of the ultrathin VC. A steam cavity structure, a liquid cavity structure and volume distribution in a heat pipe can be optimized, and good capillary water absorption performance and low water resistance and heat resistance of the heat pipe can be guaranteed.

The invention discloses a ceramic slurry and ceramic shell, and preparation methods thereof. The preparation method for the ceramic shell comprises the following steps: S1, mixing ceramic powder with deionized water according to a solid content of 55 to 60% so as to form a solution; S2, adding organic monomer and a cross-linking agent into the solution; S3, adjusting the pH value of the solution to 9 to 9.5 and then adding a dispersing agent accounting for 0.55 to 0.6% of the mass of the ceramic powder; S4, carrying out sufficient ball milling so as to form slurry and carrying out vacuum stirring to remove bubbles in the slurry; S5, adding a catalyst accounting for 1 to 1.5% of the sum of the mass of the organic monomer and the cross-linking agent into the slurry; S6, adding an initiator into the slurry; S7, injecting the slurry into the mold cavity of an injection machine, carrying out heating at 50 to 80 DEG C for curing and molding and taking a molded green body from the mold cavity; and S8, processing the molded green body so as to obtain the ceramic shell. The ceramic green body prepared in the invention is not prone to deformation and has high strength and small sintering contraction.

The invention provides a repairing and plugging material and a preparation method thereof. The repairing and plugging material is prepared from the following components in parts by weight: 65 to 80 percent of a composite cementing material, 10 to 25 percent of an enhanced composite mineral admixture, 5 to 12 percent of a composite expansion component, 0.2 to 1.0 percent of a rheological agent, 0.5 to 1.2 percent of a water reducing agent, 0.05 to 0.1 percent of a defoaming agent, 0.08 to 0.12 percent of an anti-seepage water repellent, 0.4 to 1.0 percent of a coagulation accelerator and 2 to 6 percent of an activity enhancing component. The prepared repairing and leaking stoppage material is specially used for repairing and leaking stoppage of leakage and the like caused by structural concrete cracks and infiltration line lifting of water conservancy projects, has the characteristics of high filling degree, micro expansion, high seepage prevention, early strength, high strength, high durability and the like, can realize rapid repairing and leaking stoppage, and is suitable for popularization and application.

The invention discloses a method for making high-square-degree sintered NdFeB permanent magnets with a cerium, titanium, cobalt and zirconium compound additive. The method comprises the steps that raw materials are prepared with 27.0% to 29.0% of Nd, 2.5% to 4.0% of Ce, 63.5% to 67.5% of Fe, 1.0% to 1.2% of B, 0.5% to 1.0% of Nb, 1.0% to 3.0% of Co, 0.1% to 0.3% of Zr, 10.5% to 1.0% of A, 0.1% to 0.3% of Cu, and 0.1% to 0.3% of Ti, the raw materials are smelted under the temperature of 1380 DEG with a vacuum induction rapid-hardening casting strip furnace, smelted alloy liquid is processed through electromagnetic stirring to be uniform, and is poured to a rotating water-cooling copper stick, and the alloy liquid is rapidly cooled to form alloy slices with the thickness ranging from 0.2 mm to 0.5 mm; NdFeB alloy slices are broken into NdFeB alloy particles with the length ranging from 120 microns to 200 microns with a hydrogen breaking furnace; the particles are further broken into NdFeB alloy powder with the length ranging from 3.0 microns to 4.5 microns by an air-current mill; the powder is formed in a forming press, and is further densified through isostatic cool pressing; formed initial blanks are sintered, and sintered permanent magnets are finally obtained. With the method for making high-square-degree sintered NdFeB permanent magnets with the cerium, titanium, cobalt and zirconium compound additive, the squre degree of the permanent magnets can be improved, and the production cost can be greatly reduced.

An MEMS (micro-electro-mechanical system) acoustic sensor based on graphene mainly structurally comprises an upper structure, an understructure and graphene. Sound collecting cavities, gap cavities, through hole plates, pickup holes, upper metal layers, upper insulating layers, upper metal connecting positions and an upper bonding metal layer are produced on an upper structure layer; through hole plates, gas cavities, damping holes, damping cavities, under metal layers, under insulating layers, under metal connecting positions, a graphene connecting position, an under metal bonding layer, upper metal pads, under metal pads, upper metal connecting holes, under connecting holes and a graphene connecting hole are produced on an understructure layer; and a graphene layer is clamped between the upper insulating layers and the under insulating layers. Graphene materials with thickness of a single carbon atom layer have remarkable mechanical characteristics and electrical characteristics, so that sensitivity and resolution of the acoustic sensor with graphene serving as a vibrating diaphragm are higher and acoustic detection data of the acoustic sensor are detailed, accurate and reliable.

The invention provides an electrode with excellent rate capability and current cycling performance. The electrode is made of a specific nano material. A uniform sol precursor solution is prepared mainly from polymers with different molecular weights and metal salt, nano fiber is obtained through electrospinning, gradient heat treatment is conducted, and then the high-quality contractile nano material with an adjustable internal structure is obtained; decomposition of composition fiber is controlled by skillfully utilizing different heating rates of two stages, and a morphology with a nested structure where both layers face inwards is formed under accurate and convenient control.

The invention discloses a production method of a gel polymer electrolyte porous membrane and relates to the technical field of batteries. The method comprises the steps that S1, a polymer is added into a mixed solution of a solvent and a non-solvent, the mixed solution is sealed after being uniformly dispersed, the temperature is increased to 50-120 DEG C, stirring is performed for 1-4 hours, vacuum pumping is performed after cooling to remove bubbles, and a polymer solution is obtained; S2, the polymer solution obtained in the step S1 is uniformly spread on the surface of a base material, andthe base material after coating is baked under the temperature of 30-140 DEGC for 6-20min through a stage baking mode; and S3, the residual solvent and non-solvent on the base material obtained in the step S2 are removed thoroughly, and the gel polymer electrolyte porous membrane is obtained. Through the method, the porous polymer membrane can be produced continuously and quickly, production efficiency is high, and operation is easy; the prepared gel polymer electrolyte membrane is uniform in pore structure and high in porosity, has less solvent residues and is beneficial for improving the energy density of the batteries; lithium battery generation equipment can be directly used, the requirement on the equipment is low, cost is saved, and the membrane is suitable for industrial production.

The invention relates to a preparation method of a LiNi<0.8>Co<0.2>O<2> material. The preparation method comprises the following steps of (1) dissolving a lithium salt, a nickel salt, a cobalt salt and urea in water, and performing hydrothermal reaction under 160 DEG C to obtain a precursor solution, wherein the mole ratio of the lithium salt, the nickel salt and the cobalt salt is 1:0.8:0.2: and(2) drying the precursor solution to remove water, and performing calcination under 750-850 DEG C in an oxygen atmosphere to obtain the LiNi<0.8>Co<0.2>O<2> material. According to the method, a positive ion mixing phenomenon of the material during the synthesis process is effectively reduced by controlling structural morphology of a precursor product, the structural orderliness of the material isimproved, the structure collapse of the material during the circulation process can be reduced, and the cycle stability and the rate property of the battery are effectively improved.

The invention discloses a battery cover sealing structure and a manufacturing method thereof and a battery. The battery cover sealing structure comprises a central pole, the central pole is sleeved in a battery cover plate, and an annular gap is arranged between the central pole and the battery cover plate; the glass fixing body and the glass fixing ring are sequentially and tightly inserted into the annular gap in a penetrating manner, and the glass fixing body and the glass fixing ring are arranged on the central pole in a sleeving manner; the glass fixing ring is arranged below the glass fixing body, and the upper surface of the glass fixing ring is tightly connected with the lower surface of the glass fixing body; the glass fixing body is arranged between the central pole and the battery cover plate, so that the sealing property and the sealing strength between the central pole and the battery cover plate are effectively improved, and the glass fixing ring is arranged between the central pole and the battery cover plate, so that the corrosion of battery electrolyte to the glass fixing body is avoided, and the sealing performance of the battery cover sealing structure is improved, so the service life of the battery is prolonged; the manufacturing method is simple, and the sealing performance of the battery cover is ensured.

The invention discloses a preparation method of carbon-coated cobaltous sulfide / cobaltous octosulfide nano particles having a multistage porous structure and an application thereof. Based on a solvothermal method, PAN is employed as a carbon source and is taken as a carrier of an active substance, the carbon-coated CoS / Co9S8 nano particles having a specific structure is obtained by adding a certain mass of sulfur powder through calcining and sulfuration under protection atmosphere, and the carbon-coated CoS / Co9S8 nano particles have the multistage porous structure. The multistage porous structure constructed by the carbon-coated active substance particles is in favor of full contacting of an electrolyte and an active substance, provides more reaction active sites, shortens diffusion distance of lithium ions, increases the multiplying power performance of a battery, alleviates volume expansion during a lithium insertion process, prevents powdering and shedding of the active substance, and greatly increases the cycle life of the battery. The preparation method has the advantages of easy operation, and controllable reaction condition, and is easy for an amplification experiment.

The invention relates to a method for gluing a hair elastic ring. The method comprises the following steps of: 1) rinsing the elastic band provided with an ornament layer on the outer layer of a rubber band by using 5 to 10 weight percent aqueous solution of sodium chloride, then cleaning the rinsed elastic band by using 1 to 5 weight percent polyvinyl alcohol or by using 5 to 25 weight percent of triethanolamine, and drying the cleaned elastic band at room temperature; 2) cutting the elastic band with an elastic material thermal cutting machine, performing a circle of ironing on a cutting position for the elastic band by using a heating cutter at the temperature of 200 to 300 DEG C in a twist way, leaving a pressing mark on the ornament layer of the elastic band and performing cutting atthe pressing mark by using a cutter; and 3) wetting two cross sections of the elastic band by spraying 60 to 85 weight percent alcohol, coating glue containing alpha-ethyl cyanoacrylate on the two cross sections and jointing and bonding the two cross sections to form the hair elastic ring. The method for gluing the hair elastic ring discards the conventional way for connecting the elastic band bya metal connecting piece, so that the hair elastic ring becomes a hair ornament which is safe and environmentally-friendly and difficult to be broken and has nice appearance.

The invention provides a microwave device surface processing device capable of restraining secondary electron emission and a microwave device surface processing method capable of restraining secondary electron emission. The device consists of a laser output module, a micro lens, a movable table and a control module, wherein the control module outputs control signals to the laser output module and the movable table, so as to control the laser output power, the laser output interval time, the movement distance of the movable table and the movement time of the movable table; by virtue of a small-area deep hole array continuous moving and filling method, laser etching of a centimeter-scale large-area deep hole array structure on the surface of a microwave device is finished. The microwave device surface structure processed by the device and the method is of a rectangular uniformly-spaced or triangular uniformly-spaced micronano deep hole array, so that the secondary electron emission coefficient of the surface of the microwave device can be effectively reduced. The device and the method are automatic in processing, simple in process and high in efficiency, and can be used for performing processing treatment on the surfaces of parts such as gold or plated gold; the surface performance of the processed microwave device has long-term stability, and the processed microwave device is applicable to ground and aerospace environments.

The invention provides a high-temperature-resistant polyurethane elastic fiber spinning control method. According to the method, the temperature of the upper portion of a channel is set to be slightly higher than the boiling point temperature of a spinning solution solvent; meanwhile, the relatively low air speed and the low air pressure are set, so that the solvent volatilization speed difference between the interiors of filaments and the surfaces of the filaments is relatively small, and the temperature of the middle of the spinning channel is set to be 250-270 DEG C; and meanwhile, the corresponding air speed and air pressure are set in a matched mode, the solvent diffused to the surfaces of the filaments from the interiors of the filaments is further volatilized, the temperature of the lower portion of the channel is set to be 20-30 DEG C lower than the temperature of the middle of the channel, the concentration of the solvent in the filaments is volatilized to the minimum, and finally the drafting speed of a drafting roller is set. The high-temperature-resistant polyurethane elastic fiber which is good in orientation, high in crystallinity and uniform in structural consistency can be obtained from the polyurethane elastic fiber filaments through spinning control conditions.

The invention discloses a high-sensitivity micro-nano giant piezoresistive rainfall sensor and a preparation method and a measurement structure thereof. The sensor comprises a sensor array which includes multiple silicon aluminum heterojunction sensing units, power supply electrode pairs, signal detection lead-out electrode pairs and reference lead-out electrode pairs. Each sensing unit includes two silicon aluminum heterojunction pressure sensitive structures, a bottom silicon layer, an insulating silicon dioxide layer and a top silicon layer. The two silicon aluminum heterojunctions which are consistent in structure and property are arranged at the two ends of the sensor in parallel. The side parts of the silicon aluminum heterojunctions are provided with an excitation electrode and a detection electrode. When the sensor is used, mechanical stress of the sensor chip is formed through rainfall pressure and the size of the contact potential barriers of the silicon aluminum heterojunctions is changed so that the giant piezoresistive effect is realized; and the change of the volt-ampere properties of the silicon aluminum heterojunctions acting as a reference part is not caused by stress and the silicon aluminum heterojunctions can act as a differential reference circuit to eliminate the influence of temperature. The sensor is high in measurement sensitivity and accurate and suitable for the occasion of high-precision rainfall measurement.

The invention provides a clutch structure of an electric operating mechanism for a circuit breaker, which comprises a gear, a star wheel, push rods and a top plate, wherein the star wheel is coaxially arranged in a center hole of the gear, and the push rods capable of reciprocating in the radial direction of the star wheel are arranged on the two sides of the star wheel in a sleeving mode; a spring is arranged in the star wheel, a stop pin is arranged at the other end of the spring in a telescopic mode, and the two ends of the stop pin and the push rod are fixedly arranged; a plurality of spigots matched with the stop pin are annularly arranged on the outer edge of the center hole, and the stop pin can be switched in the center hole and the spigot; and the top plate is arranged on the outer side of the gear and is fixed in position. The clutch structure is simple, does not occupy external space, is good in action consistency, is more suitable for batch production, realizes clutch on the premise of not increasing axial and radial sizes, and is low in manufacturing cost.

The invention relates to a zinc oxide / titanium oxide double-layer nanorod array heterojunction structure and a preparation method thereof. According to the preparation method, sputtering parameters are optimized, ZnO nano-particles are obtained through deposition on the top of each nano-rod in a TiO2 nano-rod array, the ZnO nano-particles are used as seed crystals to grow on the tops of the TiO2 nano-rods again through a hydrothermal method to obtain ZnO nano-rods, and finally the ZnO nano-rods are cleaned and annealed. Therefore, a double-layer nanorod array heterojunction composite structurewith the one-dimensional zinc oxide nanorod array and the one-dimensional titanium dioxide nanorod array can be obtained. According to the preparation method, due to the existence of the ZnO seed crystal particles, the subsequent ZnO nanorods can continuously grow along the growth direction of the TiO2 nanorods, so that the finally grown two-layer nanorod array has the advantages of good structural consistency and highly ordered orientation due to the fact that the two-layer nanorod array grows perpendicular to the substrate.