35results about How to "Reduce wetness" patented technology

The invention discloses a method for preparing a copper-based solder. The method comprises the following steps: (1) burdening: preparing a furnace burden from copper, manganese, nickel, cobalt, silicon, a copper-ferrous intermediate alloy, a copper-boron intermediate alloy and a copper-mixed rare earth intermediate alloy serving as raw materials; (2) casting: putting the prepared furnace burden into the a corundum crucible according to the sequence of manganese, copper, nickel, cobalt, silicon, copper-boron intermediate alloy, copper-mixed rare earth intermediate alloy and copper-ferrous intermediate alloy, smelting by adopting medium-frequency induction, and cooling along with the furnace to obtain an alloy blank, wherein the smelting process is performed under the protection of argon gas; and (3) rolling: rolling the alloy blank with a cold-rolling mill to obtain the copper-based solder. The copper-based solder provided by the invention can be applied to an ODS (Oxide Dispersion Strengthened) high-temperature alloy welding joint, has high brazing process performance, heat resistance, corrosion resistance and machining process, and is low in cost.

The invention provides high-voltage electrolyte for a lithium ion battery. The high-voltage electrolyte is composed of an electrolyte lithium salt, fluorocarbonate, nitriles, a solvent and an additive, wherein the electrolyte lithium salt is LiPF6 with the concentration of 1.2mol / L-1.6mol / L; a fluorocarbonate solvent accounts for 10%-60% of the total mass of the solvent; the nitriles account for 5%-15% of the total mass of the solvent; a non-aqueous organic solvent accounts for 23%-84.5% of the total mass of the solvent; the additive is lithium difluorophosphate and accounts for 0.5%-2% of the total mass of the solvent. By compounding and combining cyclic fluorocarbonate, straight-chain fluorocarbonate, the nitriles, the additive and the like, the high-voltage heat stability of the electrolyte is prone to improve and the problems that the high-temperature circulating stability of conventional electrolyte is poor and the high-temperature storage is not ideal are improved. Meanwhile, the electrolyte has small viscosity when the materials are matched; the wetting property of an electrode material is facilitated, the liquid injection time of the lithium ion battery is shortened and the rate performance of the battery is improved.

The invention relates to an intelligent stair cleaning robot. The robot comprises a bearing column, a lifting driving mechanism, a bracket, a horizontal driving mechanism, a sliding block, a verticalguide rod, a horizontal guide rod, a cleaning machine body, a distance measuring device, a displacement sensor, a walking mechanism and a control circuit, wherein the lifting driving mechanism and thevertical guide rod are both embedded in the bearing column, the rear end face of the sliding block is slidingly connected with the lifting driving mechanism and the vertical guide rod separately, andthe front end face of the sliding block is connected with the horizontal driving mechanism and the horizontal guide rod separately; the bracket comprises a protective cover plate, a positioning basebody and a positioning block, and the positioning base body is in sliding connection with the horizontal driving mechanism and the horizontal guide rod separately; the bracket is connected with the upper end face of the cleaning machine body through the positioning block. According to the robot, on the one hand, the requirements of the automatic cleaning operation of stair structures of various different structure types can be effectively met, so that the automation degree of the stair cleaning operation is effectively improved; on the other hand, the stairs are effectively cleaned, dust is reduced, and meanwhile, the slippery degree of stair surfaces is reduced, so that accidents such as slipping are avoided.

The invention relates to a modified vegetable oil aerial pesticide auxiliary agent, and a preparation method and application thereof, and belongs to the technical field of plant protection. The raw materials of the auxiliary agent include, by weight, 42-56 parts of modified turpentine oil, 14-20 parts of a surfactant, 10-20 parts of a wetting spreader and 10-20 parts of an anti-drifting agent. Theauxiliary agent is low in cost, and can effectively improve liquid medicine performance and droplet performance and enhance control effects. The preparation method includes dissolving the wetting spreader and the anti-drifting agent into the modified turpentine oil, and then mixing with the surfactant. The preparation method is simple and easy to operate, so that large-scale production of the auxiliary agent can be realized. The auxiliary agent can be used to mix with liquid medicine to control crop diseases through an unmanned aerial vehicle, so that liquid medicine droplet performance can be effectively improved, and aerial pesticide control effects in fields can be increased.

The production method of coated granular phytase includes the following steps: uniformly mixing phytase and stabilizing agent, slowly adding fully-dissolved binder at the same time of shearing materials, stirring, cutting, kneading and granulating in the granulating machine to obtain granular material, boiling and drying, then using spray method to coat the granular phytase and screening so as to obtain the invented spherical coated granular phytase.

The invention belongs to the technical field of concrete, and provides high-strength high-permeability concrete and a preparation method thereof. The high-strength and high-permeability concrete is prepared from, by weight, 5-10 parts of water, 15-35 parts of cement, 50-75 parts of quartz sand, 1-3 parts of tetrabutyl titanate, 0.3-1.5 parts of boron fibers, 0.5-4.5 parts of molybdenum disulfide,1-5 parts of lithium-based bentonite, 0.06-0.15 part of a water reducer, 0.05-0.1 part of carbon black, 0.4-0.5 part of rosin, 0.3-0.8 part of an early strength agent, 1-1.5 parts of an air entrainingagent and 1.5-5 parts of tetraethoxysilane. The preparation method comprises the steps that firstly, the cement, the quartz sand, the lithium-based bentonite, the carbon black and the like are dry-mixed, the boron fibers are added, and water is added for stirring after uniform mixing; then, the molybdenum disulfide, the tetrabutyl titanate, the water reducer, the rosin, the early strength agent and the air entraining agent are added and mixed, and then the tetraethoxysilane, water and ethanol are added and stirred. Through the technical scheme, the problems of low compressive strength and lowbending strength of water-permeable concrete in the prior art are solved.

The invention discloses a manufacturing method of copper-iron-based diamond cutter teeth. The manufacturing method comprises the following steps that framework materials and bonding metal are used forpreparing base body materials, mixing is carried out after preparation, loading is carried out after mixing for hot press molding, cooling is carried out after hot press molding, mechanical machiningis carried out after cooling, powder in the base body material preparation process comprises 40% of Cu, 30% of Fe, 8% of Sn, 12% of Ni and 10% of WC, diamond accounting for 7% o the total weight o the base body materials is added in the mixing process, and the diamond adopts 30% of 35 / 40-meshed diamond, 40% of 40 / 45-meshed diamond and 30% of 45 / 50-meshed diamond. Fe powder is added to replace some WC powder, the production cost is reduced, Sn powder can improve the wettability of bonding metal for diamond, the alloy melting point is effectively lowered, powder pressing performance is improved, Ni powder can enhance the base body mechanical property, low-melting-point metal loss is restrained, WC powder is high in thermal conductivity and has the heat expansion coefficient approximate to that of diamond, and the elasticity modulus and hardness are high.

To provide the subject sheet improved in skin touch with reduced wet feel due to body fluid while retaining its performance and touch feel and capable of preventing the body fluid from oozing from the absorptive article via the open holes onto the outer surface thereof. The objective surface sheet consists of a nonwoven fabric sheet formed by fusing thermoplastic synthetic fibers. On the surface of this sheet, many ridges and flutes are alternately arranged so as not to represent a plane, the ridges are projectedly curved, while the flutes recessedly curved. Each of the flutes has an open hole with a rib extending from the surface of the sheet to the back surface , and the rib is harder than the other parts.

The invention belongs to the field of metal materials, and relates to a refining method for an aluminum-silicon cast aluminum alloy. An aluminum alloy ingot raw material comprises the following elements in percentage by mass: 10.5-11.5% of Si, 0.3-0.5% of Mn, 0.2-0.3% of Mg, 0.3-0.6% of Fe, less than or equal to 3.5% of Cu, less than or equal to 0.9% of Zn, less than or equal to 0.3% of Sn, 0.2-0.5% of Ni and the balance of Al. Dried alum is sent into molten aluminum together with an inert gas by a spray gun, wherein the alum addition rate is 1-10%kg / t in Al, the inert gas is injected into themolten aluminum through a graphite rotor, and the bubble diameter of the prepared molten aluminum is less than 1mm. An aluminum alloy ingot obtained by refining the molten aluminum by the refining method for casting an aluminum alloy material, provided by the invention, has a hydrogen content of less than 0.25cc in 100g of Al and an impurity content of less than 200ppm in 100g of Al.

The invention relates to the technical field of papermaking, in particular to a papermaking process for improving the durability and the waterproof properties of paper. The papermaking process includes adding components A after plant fiber raw material pulping steps and before bleaching steps; adding components B before gluing steps in preparation procedures. The components A comprise diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan. The components B comprise plant poly-gum, pyrethrin, additive plant extract and modified dialdehyde starch. The papermaking process has the advantages that influence of metal ions on paper pulp bleaching can be effectively reduced, fibers can be effectively swollen up, and the paper is easy to dry; grain phenomena can be reduced, the strength of the paper can be enhanced, the hydration liquid permeation resistance of paper sheets can be improved, and excellent antibacterial and insect prevention effects further can be realized; various added components are nontoxic and harmless, and accordingly the papermaking process is safe and environmentally friendly and has a high practical value and an excellent application prospect.

The invention relates to the technical field of papermaking and specifically relates to a high-quality antibacterial insect prevention paper manufacturing technology. The manufacturing technology comprises the steps: adding an ingredient A which is prepared from diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan after a plant fiber raw material pulping step and before a bleaching step and adding an ingredient B which is prepared from plant multi-glue, pyrethrin, hyperplastic plant extract and modified dialdehyde starch in a preparation process before a gluing step. The manufacturing technology disclosed by the invention can effectively reduce effects of metal ions to paper pulp bleaching, so that fiber can be better swelled, and paper can be dried more easily; in addition, the silk flow phenomenon is reduced, and paper strength is improved; meanwhile, seepage resistance of paper to hydration liquid is improved, and a good antibacterial insect prevention effect is achieved; all the added ingredients have no toxin and harm, so that safety and environmental friendliness are achieved; thus, the manufacturing technology has higher practical value and a good application prospect.

The invention discloses a plastic anti-skid pad easy to cut for a bathroom. The pad comprises a ground mat body with tearable lines at the outer walls of the four edges. An installing cavity is formedinside the ground mat body. The bottoms of the inner walls of the four edges of the installing cavity are each provided with an overflow hole, a connecting plate is in sliding connection with the inner wall of the installing cavity, the top of the ground mat body is sequentially provided with slots and installing grooves distributed at equal intervals, the slots and the installing grooves are communicated with the installing cavity, the inner walls of the slots are in sliding connection with supporting rods of the T-shaped structure, and a suction cup with an upward opening is fixedly arranged inside the installing groove. Liquid on the upper surface of a flow guiding plate and the ground mat body is conveniently removed, the slippery degree of the ground mat body is lowered, when a usersteps on the ground mat body, negative pressure is formed between the suction cup and the shoe sole of the user, the suction cup can generate certain suction for the foot sole of the user, the actingforce between the ground mat body and the foot sole of the user is increased, and the user is prevented from slipping down.

The invention discloses a high-permeability waterproof additive for concrete and belongs to the technical field of waterproof materials of concrete construction. According to the high-permeability waterproof additive, by introducing a small amount of trimethyl aluminum ingredient, the permeability and waterproofing property of the additive are further improved during use stirring and water entry.An added magnesium salt and an added zinc salt can produce hydroxides during pH regulating and permeate into the surface of the concrete by sufficient depth, and thus, the thickness of a waterproof layer is increased, so that the concrete is not prone to erosion by water or gas, and the durability of the concrete is improved. Hydroxyl containing azobenzene serves as an initiator, and boron trifluoride serves as a catalyst, so that the additive can be combined to a hydrophilic side in a concrete system, the hydrophobic effect is improved, and capillary bores are filled to form a compact capillary bore structure; and meanwhile, the additive has good water resistance, the compactness among ingredients is improved, and the wettability to the surface of the concrete caused by water is lowered.According to the high-permeability waterproof additive, the problem that permeable-waterproof agents of the concrete commonly used at present are poor in permeation and waterproof effect coordinationperformance is solved.

The invention relates to the technical field of paper-making, in particular to a making method of environment-friendly high-quality paper. The environment-friendly high-quality paper is prepared froma component A and a component B, wherein the component A is prepared from diethylene triamine pentaacetic acid (DTPA), sodium dodecyl sulfonate and modified chitosan, and is added after the step of plant fiber raw material pulping and before the step of bleaching; the component B is prepared from plant polygel, pyrethrin, additive plant extracts and modified dialdehyde starch, and is added beforethe sizing step in the preparation process. The preparation method can effectively reduce the influence of metal ions on pulp bleaching, enables fibers to be better swelled up, and enables the paper to be more easily dried; furthermore, the preparation method can reduce the filament flow phenomenon, improve the strength of the paper and enhance the penetration resistance of paper sheets to hydration liquid, and also has good bacteriostasis and insect prevention effects; all the added components are non-toxic and harmless as well as safe and environmentally friendly, so that the prepared paperhas a higher practical value and a good application prospect.

A battery protection integrated circuit includes a switch unit; a control unit that controls on and off of the switch unit based on a monitored result; a package; a plurality of external connection terminals that are electrically connected to a plurality of terminal portions of the switch unit and the control unit, respectively, all of the external connection terminals that are to be connected to a first terminal of a circuit board being provided at a first short side of the terminal providing surface that faces one of board short sides of a circuit board, and all of the external connection terminals that are to be connected to a second terminal of the circuit board being provided at a second short side that is opposite to the first short side, when being mounted on the circuit board.

The invention discloses a method for improving the adhesive force of an electrophoretic deposition energetic film, and relates to the technical field of energetic materials, and the method comprises the following steps that (1) Al or Mg and a metal oxide are added into an organic solvent according to the mass ratio of 1: (1-4), and ultrasonic dispersion is conducted to obtain a suspension; (2) an organic material is added into the mixed solution, and ultrasonic treatment is conducted to obtain a solution; (3) the suspension in the step (1) is used as an electrophoretic deposition solution, a cathode and an anode are put in, electrifying is performed, and depositing is conducted on the surface of the cathode to obtain a thin film; and (4) the thin film is immersed into the solution obtained in the step (2), standing lasts for 5-30 seconds, and then vacuum drying is carried out. The method has the beneficial effects that the solution soaking method is adopted to improve the adhesive force of the electrophoretic deposition energetic film on the surface of the base material, the operation process is simple, the cost is low, and the film is good in stability and high in adhesive force.

The invention relates to a filling device and method for ecological slope protection. The filling device comprises a supporting rod, a protective net and geotechnical cloth, wherein one end of the supporting rod is a fastening end used for being fixed to a slope surface, and the other end of the supporting rod is a connecting end; the connecting end is sequentially connected with the protective net and the geotechnical cloth in the direction close to the slope surface; an elastic rope is jointly connected between the geotechnical cloth and the protective net; the supporting rod is further provided with a staged opening assembly; and the staged opening assembly is used for driving the geotechnical cloth to move in a staged mode in the direction close to the slope surface. According to the filling device and method for ecological slope protection, by arranging the geotechnical cloth and the staged opening assembly capable of changing the distance between the geotechnical cloth and the protective net, a first spray-seeding covering layer and a second spray-seeding covering layer can be well attached and stabilized, the sunken position of the slope surface is filled, and water and soil loss of the spray-seeding covering layers at the sunken position is reduced, so that the vegetation slope protection function of ecological slope protection is ensured.

The invention discloses a butterfly valve with a silt particle prevention mechanism, and belongs to the field of butterfly valves. According to the scheme, when a valve plate is opened to enable water flow to circulate in a valve seat, silt particles in the water flow can be intercepted by a silt intercepting net, the water flow directly penetrates through the anti-blocking mechanism, and the silt particles enter the anti-blocking mechanism to be detained; the multifunctional blocking mechanism is taken out to enable the water flow to flow out through the communicating opening, on one hand, the sediment blocking net can block sediment particles in the water flow to the maximum extent, and the sediment particles are retained in the anti-blocking mechanism, so that the sediment particles are not prone to blocking opening and closing of the valve plate; on the other hand, when the anti-blocking mechanism retains the sediment particles, part of water flow enters the anti-blocking mechanism, and the multifunctional blocking mechanism releases heat after making contact with the water flow so as to evaporate the entered water flow and dry the retained sediment particles; therefore, when the multifunctional blocking mechanism is taken out, silt particles can flow out to the maximum extent.

The invention discloses an energy-saving self-lightening type antiskid street brick which comprises a bottom brick and a treading brick, a sliding ring is fixed to the bottom of the treading brick, a plurality of piezoelectric blocks are fixed to the inner bottom of the bottom brick and connected with the sliding ring through extrusion springs, and a lower connecting plate is fixed to the inner bottom of the bottom brick. An upper connecting plate is fixed to the bottom of the sliding ring, a lamp tube and a photoresistor are fixed to the upper portion of the treading brick, a storage battery is fixed to the inner bottom of the bottom brick, a sealing ring is fixed to the inner bottom of the bottom brick, and a water absorption mechanism is arranged in the sealing ring. The energy-saving self-lightening type antiskid street brick has the advantages that a plurality of piezoelectric blocks are arranged, the piezoelectric blocks are pressed to generate electricity by treading the treading bricks by walking of pedestrians, and the plurality of piezoelectric blocks are charged by a plurality of storage batteries at the same time, so that the walking energy of the pedestrians is effectively converted into electric energy to be stored in the storage batteries, and self-sufficiency of power supply of the device is realized; therefore, the energy-saving effect is achieved.

The invention discloses a foamed concrete heat insulation board. The foamed concrete heat insulation board comprises two board bodies, wherein a clamping mechanism, a fixing mechanism and a protection mechanism are sequentially arranged outside each board body; and each fixing mechanism is composed of a concave frame, a rectangular plate and a long plate, wherein the rectangular plate is fixedly installed at the position, close to the middle, of the inner surface of the concave frame, and transverse grooves are formed in the front and back positions, close to the upper end, of the outer surface of the right side of the concave frame. The foamed concrete heat insulation board can serve as a shell of a wall to protect and install a heat insulation board body, and a shed body can be temporarily built conveniently; in addition, rainwater can conveniently slide down, the situation that the board bodies are wetted by the rainwater can be reduced, the waterproofness of the board bodies is improved, the probability that reptiles gnaw and damage equipment is reduced, the protection effect of the board bodies is effectively improved, the probability that boston ivy climbs on the wall is reduced, and the risk that the boston ivy hurts the wall is reduced; and sunlight can conveniently irradiate the wall, and therefore the heat insulation effect is better achieved.

The invention relates to the technical field of papermaking, in particular to a paper preparation, modification and optimization method. The method includes: adding a component A composed of diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan after plant fiber raw material pulping and after bleaching; adding a component B composed of plant multi-glue, pyrethrin, modification plant extract and modified dialdehyde starch before glue applying in the process of preparation. By the method, impact of metal ions on paper pulp bleaching can be lowered effectively, good swelling of fiber can be realized, and paper is easier to dry; filament phenomena can be reduced, strength of the paper is improved, permeation resistance of paper sheets to hydration liquid is improved, and the paper has good bacteriostatic and insect-resistant effect; the added components are nontoxic, harmless, safe and environment, so that the method has high practical value and good applicationprospect.

The invention discloses Sn-Zn-series lead-free brazing filler metal. The Sn-Zn-series lead-free brazing filler metal consists of the following components in percentage by weight: 8-9% of Zn, 0.005-0.006% of Al, 0.005-0.15% of Nd and the balance of Sn. Compared with the prior art, the Sn-Zn-series lead-free brazing filler metal provided by the invention has relatively good oxidization resistance and wettability, and is low in melting point. The invention further discloses a preparation method for the Sn-Zn-series lead-free brazing filler metal.

The invention relates to the technical field of paper making, in particular to a low-cost high-quality paper improvement preparation process, which comprises the following steps of adding an ingredient A prepared from diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan after the plant fiber raw material pulping step and before the bleaching step, and adding an ingredient B prepared from plant poly gum, pyrethrin, additive plant extracts and modified dialdehyde starch before the glue application step in the proportioning process. The process provided by the invention has the advantages that the influence of metal ions on paper pulp bleaching can be effectively reduced, so that the fiber obtains good lubrication swelling effects; paper can be more easily dried;in addition, the generation of thread fluid phenomenon can be reduced; the paper intensity is improved; meanwhile, the anti-seepage power of paper on hydration liquid can be improved; good antibacterial and insect prevention effects can be achieved; each added ingredient is nontoxic and harmless; safety and environment protection are realized; high practicability and good application prospects arerealized.

The invention relates to the technical field of papermaking, in particular to a method of making paper by machinery, comprising the steps of adding component A, which is composed of diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan, after the step of pulping of plant fiber materials and before the step of bleaching; adding component B, which is composed of vegetablemulti-gum, pyrethrin, additive plant extracts and modified dialdehyde starch, before the step of applying gum during preparation. The method has the advantages that influence of metal ions upon pulpbleaching can be relieved effectively, fibers gain good swelling, and paper is easier to dry; grain issue can be relieved, and paper strength is improved; the ability of paper sheets to resist permeation of hydrated liquids is improved, and the paper sheets are given good antibacterial and insect-preventing effects; the components added herein are nontoxic and harmless, and therefore, the paper isgood in safety and environmental friendliness and has high practical value and good application prospect.

The invention relates to the technical field of papermaking, in particular to a preparation method of high-strength impervious paper. The high-strength impervious paper is prepared from a component Aand a component B, wherein the component A is prepared from diethylene triamine pentaacetic acid (DTPA), sodium dodecyl sulfonate and modified chitosan, and is added after the step of plant fiber rawmaterial pulping and before the step of bleaching; the component B is prepared from plant polygel, pyrethrin, additive plant extracts and modified dialdehyde starch, and is added before the sizing step in the preparation process. The preparation method can effectively reduce the influence of metal ions on pulp bleaching, enables fibers to be better swelled up, and enables the paper to be more easily dried; furthermore, the preparation method can reduce the filament flow phenomenon, improve the strength of the paper and enhance the penetration resistance of paper sheets to hydration liquid, andalso has good bacteriostasis and insect prevention effects; all the added components are non-toxic and harmless as well as safe and environmentally friendly, so that the prepared paper has a higher practical value and a good application prospect.

The invention discloses a silver-based brazing process of nuclear magnetic equipment. The silver-based brazing process comprises the following steps: step 1, AgCuIn27-10 is selected as a brazing material, and the surface of the brazing material is polished by using SiC abrasive paper until the surface reaches the grade of 1000 or above; step 2, SiC abrasive paper is used for polishing base metal till the grade is 1000 or above, and the base metal includes a copper pipe and a stainless steel pipe; and step 3, acetone is used for conducting ultrasonic cleaning on the surfaces of the brazing material and the base metal, the cleaning time is 3-5 min, and surface impurities are removed. The process mainly aims at the welding work of copper and stainless steel in a nuclear magnetic cooler, and has the advantages of good welding effect, safety, environmental protection, low production cost, high strength at the welding position, and excellent corrosion resistance.