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134results about How to "Increase roughness" patented technology

Preparing method for titanium-based titanium sub-oxide electrode

The invention belongs to the technical field of electrochemical oxidation wastewater degradation, and particularly relates to a preparing method for a titanium-based titanium sub-oxide electrode. The preparing method comprises the steps of pretreatment of a titanium substrate, transferred arc cleaning, titanium sub-oxide spraying and surface oxide electrode sintering; titanium servers as a substrate, the titanium substrate is sprayed with titanium sub-oxide powder with the plasma spraying technology, and the titanium-based titanium sub-oxide coating electrode is obtained; part of titanium sub-oxide is formed through oxidation of the titanium substrate at a high temperature, and the conductivity of an electrode material is ensured; a wide electrochemical window is adopted, active sites formed by adding a binding agent on the surface of the electrode are decreased to the maximum degree, the oxygen evolution potential is increased, and background current is reduced; furthermore, use technological parameters of the titanium sub-oxide electrode are determined according to use data obtained in tests, and thus titanium sub-oxide becomes the economical and effective electrode which can be used for electrolyzing wastewater for a long term; the preparing method is simple in technology and reliable in principle, the preparing cost is low, the electrolyzing efficiency is high, the electrolyzing effect is good, the service life is long, the application range is wide, and use is environmentally friendly.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Anti-charged dust device used on surface of optical system or solar cell

The invention discloses an anti-charged dust device used on the surface of an optical system or a solar cell, comprising a substrate, as well as a tin indium oxide layer, a titanium dioxide nanoparticle array layer and a fluorine-containing polymer thin film layer, which are sequentially formed on the substrate, and the substrate is glass used on the surface of the optical system or a silicon chip used on the surface of the solar cell. Under continuous ultraviolet radiation, the surface of the device is continuously positively charged, thereby enabling dust adhered on the surface to finally have the same charge with that on the surface of the device regardless of the original charge of the dust, and further enabling dust particles to be separated from the surface under the action of electrostatic repulsion. In addition, a hole generated by the titanium dioxide layer under the ultraviolet radiation has strong oxidizing property, thereby being capable of decomposing organic matters adhered on the surface of an optical device and playing a bactericidal role. The device can achieve good dust prevention and dust removal effects, and effectively prevent light transmittance on the surface of the optical system or the solar cell from being reduced due to hindrance of the dust.
Owner:ZHEJIANG UNIV

Method for preparing LiFePO4/SiC lithium battery positive plate by microwave heating

The invention discloses a method for preparing a LiFePO4/SiC lithium battery positive plate by microwave heating. The method is characterized in that: the method comprises the following steps of 1, immersing LiFePO4 in a lithium silicate aqueous solution having mass concentration of 20 to 30% for 2 to 5 hours, fully stirring and evaporating water of the lithium silicate aqueous solution, 2, carrying out calcination of the immersed LiFePO4 at a temperature of 500 DEG C for 2 to 5 hours, 3, adding SiC having particle sizes of 100 to 150 microns into LiFePO4 powder obtained by calcination, wherein a use mount of SiC is 5 to 10wt% of that of LiFePO4, and carrying out uniform ball-milling mixing, 4, heating the mixture obtained by the step 3 in a microwave oven under the conditions of microwave power of 300 to 500W and heating time of 10 to 25 minutes, and 5, mixing the mixture obtained by the step 4, a binder, a conductive agent, an additive and a solvent into slurry, and carrying out coating, drying, rolling and cutting of the slurry to obtain the LiFePO4/SiC lithium battery positive plate. The method can effectively solve the problem of falling-off of LiFePO4 powder in coating and assembling and can obviously improve electrochemical performances of the LiFePO4/SiC lithium battery positive plate, and is simple in application and low in cost.
Owner:SHANGHAI JINZHONG INFORMATION TECH

Water-fluctuation zone self-locking wave-dissipation vegetation ecological slope protecting components

The invention relates to a water-fluctuation zone self-locking wave-dissipation vegetation ecological slope protecting components, which consists of two bricks with foursquare as basic shape; wherein, one of the brick is provided with linked grooves at four sides thereof respectively, a cell body is arranged in the middle of the brick, which has an upward heave and a planting hole in the middle, and a counter-arc jettied convex body is mounted on periphery adjoiner of the superface cell body of the brick; the other brick is provided with linked wedge blocks for intercalation with the linked grooves, a cell body is also mounted in the middle of the brick, and counter-arc jettied convex body is arranged on periphery on periphery adjoiner of the superface cell body of the brick; the undersurfaces of the two bricks are provided with wedges to wedge into soil; the cross-sectional shape of the counter-arc jettied convex body is similar to an isosceles trapezoid, while the upper bottom is larger than the lower bottom and the two waists are in the shape of arc. The invention realizes connection between two components of two bricks by using four-side self-locking structure, which features high stability, strong adaptability, good effect of wave dissipation and environmental protection.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI

Double-layer super-hydrophobic material and preparation method thereof

ActiveCN106119842AIncrease roughnessCorrosion rate slows downMetallic material coating processesAlloy substrateCorrosion
The invention provides a double-layer super-hydrophobic material and a preparation method thereof. An alloy substrate material is ground through abrasive paper and ultrasonically cleaned by being soaked in absolute ethyl alcohol, so that oxide films and oil stains on the surface of the alloy substrate material are removed, and A is obtained; the A is soaked in a mixed solution, formed by equivalent-volume mixing of a 0.01 mol/L stearic acid ethanol solution and a 0.01 mol/L nickel sulfate aqueous solution, according to the proportion of 0.5-10 mL/cm<2>, and then heated for 7 h through water at the temperature of 140 DEG C; the A is cooled, taken out and dried to obtain B; the B is soaked in a mixed solution, formed by equivalent-volume mixing of a 0.01-0.2 mol/L stearic acid ethanol solution and a 0.01-0.2 mol/L cobalt sulfate aqueous solution, according to the proportion of 0.5-10 mL/cm<2>, and then heated for 5-8 h through water at the temperature of 90-130 DEG C; and the B is cooled, taken out and dried to obtain the double-layer super-hydrophobic material. According to the double-layer super-hydrophobic material and the preparation method thereof, the purpose that alloy is provided with super-hydrophobic films with the corrosion resistance and the antifouling property being stable for a long time can be achieved.
Owner:HARBIN ENG UNIV

Artificial algal reef and manufacturing method thereof

InactiveCN102972324AIncrease roughnessPromotes fixation and growthClimate change adaptationPisciculture and aquariaRebarHabitat
The invention discloses an artificial algal reef and a manufacturing method thereof, and relates to the artificial algal reef and a preparation method thereof. The artificial algal reef comprises an algal reef main body made from reinforcements and concrete; vegetable gum grains are arranged on the algal reef main body, and have the grain size of 1 to 60 mm; and the weight of the vegetable gum grains is 0.01% to 0.6% of the total weight of the artificial algal reef. The preparation method of the artificial algal reef comprises the following steps: 2 to 6 parts of cement, 3 to 10 parts of sand, 8 to 12 parts of stone and 0.001 to 0.008 part of vegetable gun grains are selected through proportioning in part by weight, wherein the grain sizes of the vegetable gum grains are 1 to 10 mm; the algal reef is prepared from cement, sand, stones and a reinforcement cage; and the vegetable gum grains are added before hardening. When the artificial algal reef is used, vegetable gum is dissolved in the water, a microcellular structure is formed on the surface of a reef, the roughness of the surface of the reef is increased, the adhesion possibility of algae spores is improved, a sessile substrate suitable for the adhesion and the growth of the algae spores is provided, and habitats for foraging, breeding, growing and the like are provided for aquatic organisms such as fishes.
Owner:山东大学(威海)

High-hydroscopicity modified polyester fiber cotton sliver and preparation method and application thereof

The invention discloses a high-hydroscopicity modified polyester fiber cotton sliver and a preparation method and the application thereof. Sepiolite fiber with rapid moisture absorption and a releaseproperty is introduced into polyester fiber to improve the water absorption effect of the polyester fiber; then the polyester fiber is washed with alkali to increase the surface roughness of the fiber, thereby lowering the surface tension during moisture absorption and achieving a rapid water absorption effect; furthermore, holes and trenches which are used for communicating the inside with the outside are produced by etching the surface of the fiber form communicated pores, so that the moisture is easy to absorb and discharge; then, a hydrophilic polyvinyl alcohol membrane covers the surfaceof a fiber bundle, so that the hydrophilcity is higher, which contributes to migration of the moisture from the surface of the fiber to the inside of the fiber; moreover, the reduction of the water absorption effect due to the fact that solid particles in a coating block the pore structure on the surface of the fiber can be prevented. The modified polyester fiber cotton sliver disclosed by the invention can be applied to a paint roller brush, so that the absorption amount of a coating such as paint is increased; furthermore, the cotton silver can be repeatedly used after being used and then cleaned, so that the waste of resources is reduced.
Owner:安徽玉达工具有限公司

Target blank and machining method thereof

InactiveCN108620813AIncrease roughnessImprove uniformityEngineeringWeld strength
The invention provides a target blank and a machining method thereof. The machining method comprises the following steps that the target blank is provided, and the target blank is provided with a sputtering surface and a welding surface opposite to the sputtering surface; and the welding surface is machined, plane threads are formed on the welding surface, and the tooth shapes of the plane threadsare triangular. According to the target blank and the machining method thereof, machining is carried out on the welding surface of the target blank, the plane threads are formed on the welding surface, and the tooth shapes of the plane threads are triangular; on one hand, the roughness, the uniformity and the adhesion force of the welding surface can be increased through the plane threads; on theother hand, the tooth shapes of the plane threads are triangular, when the target blank and a back plate are welded, the plane threads can be embedded into the back plate; and therefore, the two aspects are combined, when the target blank and the back plate are welded to form a target material assembly, the welding strength between the target blank and the back plate is improved, the problem of poor welding or unsoldering between the target blank and the back plate can be effectively avoided, and then the performance of the formed target material assembly is improved.
Owner:KONFOONG MATERIALS INTERNATIONAL CO LTD

Processing method for outer surface of TA1 cathode roller

InactiveCN109333012AIncrease roughnessRefined grain sizeCopper foilColor difference
The invention relates to a processing method for the outer surface of a TA1 cathode roller. The processing method comprises four working procedures of turning, grinding, ultrasonic rolling and polishing. The single-sided thickness of the outer surface of the cathode roller is more than or equal to 5 mm through turning processing, so that the outer surface of the cathode roller has no oxide black skin, spinning lines, peeling and crack surface defects left by spinning processing; during grinding, a grinding wheel bar of a flap wheel continuously grinds and knocks the outer surface of the cathode roller to improve the roughness of the outer surface of the cathode roller, eliminate part of the processing residual stress and reduce the stress corrosion generated during raw foil electrolyzing of the cathode roller; the plastic flow structure is formed on the outer surface of the cathode roller by ultrasonic rolling, so that the stress corrosion is reduced during raw foil electrolyzing of the cathode roller; and the roughness of the outer surface of the cathode roller is further improved through polishing, so that the outer surface of the cathode roller is fine and smooth, has no color difference, has no black spots, straight grain and cross grain and has no mottles and pinhole surface defects. It is proved by the test that the copper foil produced by the method meets the requirements of high-end lithium battery copper foil, and the manufacturing period of the cathode roller is greatly shortened.
Owner:XIAN AEROSPACEMOTOR MACHINE FACTORY

Preparation of hydrotalcite nanosheet/carbon array/metal/silicon combined electrode and application of hydrotalcite nanosheet/carbon array/metal/silicon combined electrode as non-enzymatic sensor

The invention discloses preparation of a hydrotalcite nanosheet/carbon array/metal/silicon combined electrode and application of the hydrotalcite nanosheet/carbon array/metal/silicon combined electrode as a non-enzymatic sensor. A substrate material is processed by combining a C-MEMS micro-manufacturing technology and a metal sputtering technology, and the surface of the substrate material is modified with nanosheet to prepare the hydrotalcite nanosheet/carbon array/metal/silicon combined electrode, and non-enzymatic electrochemical sensor is constructed for quantitative determination of glucose. By the metal sputtering technology, electrical conductivity of silicon chip is enhanced, and smoothness and flatness of the surface will not be destroyed, and imaging quality of the subsequent micromachining material will not be influenced. The C-MEMS micromachining technology can be directly applied in preparation of electrochemical devices. The nanosheet exposes more active laminates in comparison with a micron-grade layered material and is self-assembled to cover the surface of the substrate so as to increase roughness and raise catalytic activity. Electrochemical detection shows that the composite material constructed sensor can be used for accurate and quantitative determination of glucose and has good preparation reproducibility and detection stability.
Owner:深圳市容大感光科技股份有限公司 +1
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