190results about How to "With self-cleaning ability" patented technology

The invention relates to a multifunctional graphene/high-molecular composite material water permeable membrane, a preparation method, and an application thereof. A high-molecular moisture-conductive polymer and a graphene-based composite material are organically bonded in a manner of forming effective chemical bonds, such as a hydrogen bond, an ionic bond, a covalent bond and the like, through polar functional groups, thereby forming a water permeation channel with reinforced hydrophilic-hydrophobic groups on the basis of the moisture-conductive polymer, and meanwhile, significantly improving the mechanical strength, anti-friction strength and acid- and alkali-resistant property, anti-bacterial and anti-fouling capabilities, heat conductivity and heat resistance and the like characters. The multifunctional composite water permeable membrane has long service life, is free of replacement during operation and has self-cleaning capability, and can be applied in the field of whole-heat exchanger, humidity conditioner, sewage treatment and other fields requiring water permeation or water filtration.

The invention relates to a treatment method of zinc-bearing dust for steel works. The treatment method includes mixing the zinc-bearing dust, pulverized coal and binder prior to pelletizing, feeding pellets into a rotary hearth furnace, reducing ferric oxide into sponge iron and cinder in the high-temperature reducing atmosphere in the rotary hearth furnace, exhausting the reduced zinc out of the rotary hearth furnace with smoke of the rotary hearth furnace, using the high-temperature smoke to preheat rotary hearth furnace combustion air, introducing the smoke into a wet dust remover, allowing the zinc in the rotary hearth furnace to react with dilute sulfuric acid sprayed into the wet dust remover to generate zinc sulfate solution, electrolyzing the zinc sulfate solution to obtain high purity zinc, and exhausting the purified smoke from a dispersing chimney. By the treatment method, affection of operation of a whole smoke treatment system by accumulation and bulging of zinc vapor in the smoke treatment system is avoided, and operating efficiency of the rotary hearth furnace is improved. In addition, the invention provides the zinc-bearing dust treatment method which can also be used to produce high purity zinc.

The invention relates to hydroxyapatite overlength nanowire flameproof paper with a waterproof function. The hydroxyapatite overlength nanowire flameproof paper with the waterproof function has super-hydrophobicity and fireproof and flame-retardant functions. The main component of the flameproof paper is hydroxyapatite overlength nanowire. The product also contains fatty acid salt or a perfluorinated compound modified on the hydroxyapatite overlength nanowire. The fatty acid salt or the perfluorinated compound carries out surface modification on the hydroxyapatite overlength nanowire. As hydroxyapatite overlength nanowire has rich surface reactive groups, the hydroxyapatite overlength nanowire is easy to undergo surface modification. Thus, the hydroxyapatite overlength nanowire is easy to combine with the fatty acid salt or the perfluorinated compound such that the hydroxyapatite overlength nanowire flameproof paper is endowed with an excellent waterproof function.

The present invention relates to nano scale composite antibacterial agent and its preparation method, it is characterized in that during the preparation of nano scale zinc oxide, water soluble metallic salt is added, and uses organic modifier to proceed modification, and passes through the processes of coprecipitation, washing, drying, calcination etc. to obtain the nano grade antibacterial agent. The invented nano composite antibacterial agent is excellent in anti bacterial performance and possesses the advantages of fast, high effect, broad spectrum, durable, no resistance to chemical agentetc.

The invention discloses a method for preparing hydrophobic wood, relates to a method for modifying wood, and solves the problems that a modifier has high toxicity and peculiar smell and changes wood color, the treatment process is complex and only single performance of the wood can be improved in the conventional wood modification method. The method comprises the following steps of: mixing a fluorine-containing polymerizable monomer, an unsaturated monomer and an initiator to prepare impregnation liquid; adding the wood and the impregnation liquid into a reaction tank, vacuumizing, performing pressure treatment so as to inject the impregnation liquid into a pore structure of the wood, coating a test piece and ageing at room temperature and constant pressure; and heating and performing vacuum drying to prepare the hydrophobic wood. The method is simple, the wood color is not changed, peculiar smell is absent, the parallel-to-grain compressive strength is 70 to 98 MPa, the expansion resistance rate after the wood is continuously soaked in water for 200 hours is 48 to 65 percent, the weight loss ratio after 12 weeks of fungi erosion is 6 to 13 percent, the water contact angle is more than 130 degrees, and the wood can be widely used as indoor and outdoor structural materials and decorative materials.

The invention relates to a carbon smoke filter - electric heating regenerator of diesel vehicle, which comprises an electric controller, an electric heater, and a foam ceramic main filter. Wherein, the electric heater and the foam ceramic main filter are mounted inside the sealing frame of purifier connected with the ventilate tube; the electric heater is formed by one or several foam ceramic electric heating units, that uses integrated heating or dispersed heating method; the foam ceramic main filter is made from silicon carbide foam ceramic, with wall-flow or meshed tooth shape. The invention has controllable conductive property, which can effectively filter the carbon smoke; and it is powered by carrier power source. In addition, it ahs lower cost, on-site regeneration and long service life.

The invention discloses a preparation method of a lotus-like super-hydrophobic self-cleaning surface. The method comprises the following steps: (1) electroplating a layer of porous metal film on the surface of a metal sheet by adopting a hydrogen bubble template method; (2) putting the prepared porous metal film into an electric heating furnace for oxidizing to obtain a porous metal oxide template; (3) proportionally mixing a high polymer curing system, adding normal hexane, pouring into the porous metal oxide template for curing, and removing the template after curing to obtain the lotus-like super-hydrophobic self-cleaning surface. The method has the advantages of easiness, convenience, environmental friendliness, no need of large-sized instruments, controllability of experimental parameters and low cost, and can be used for manufacturing a lotus-like micromorphology surface. A micro-protruding structure has the characteristics of super hydrophobicity, self-cleaning capability, high mechanical stability, high acid-base resistance and good application prospect, and can be industrialized.

The invention discloses a rotor expander, and relates to the technical field of rotating piston type machines or engines. The rotor expander comprises a cylinder, a female rotor in the cylinder, and at least one male rotor, wherein two vertical grooves are formed in a projected blade, and extend to the inner wall direction of the cylinder; springs and cuboid air seals are arranged in the two vertical grooves; one ends of the springs are fixedly connected with the vertical grooves, and the other ends of the springs are connected with the cuboid air seals in the vertical grooves; a machine oil channel parallel to a main shaft and an inverted T-shaped machine oil outlet communicated with the machine oil channel are arranged between the two vertical grooves; an inverted T-shaped oil ring matched with the inverted T-shaped machine oil outlet is arranged in the inverted T-shaped machine oil outlet; and the inverted T-shaped oil ring extends to the inner wall of the cylinder. The expander has the characteristics of high mechanical efficiency, easy processing, no wearable parts, long service life and low operation and maintenance costs.

The invention discloses a hydrophobic oleophobic microporous membrane paster for protection of a welded car lamp and a manufacturing method thereof. The microporous membrane paster comprises a hydrophobic oleophobic finishing agent, a microporous membrane and a low-viscosity PE adhesive tape, wherein one surface of the microporous membrane is coated with the hydrophobic oleophobic finishing agent, and the low-viscosity PE adhesive tape is adhered on the other surface of the microporous membrane. The manufacturing method comprises the following steps: manufacturing of the microporous membrane; preparation of the hydrophobic oleophobic finishing agent; preparation of a hydrophobic oleophobic microporous membrane: a step of feeding the hydrophobic oleophobic finishing agent in a roller coater, unreeling the microporous membrane, allowing one surface of the microporous membrane and a roller to contact a coating and successively carrying out heating and predrying of the roller, baking and rolling; and process preparation: a step of compounding the other surface of the microporous membrane with the low-viscosity PE adhesive tape, carrying out molding and die cutting, discharging waste leftover materials and successively carrying out inspection, rolling and packaging. The hydrophobic oleophobic microporous membrane paster has self-cleaning capability as a lotus leaf does, a better effect on resistance of pollution by automobile exhaust gas is obtained when the hydrophobic oleophobic microporous membrane paster is used for protection of car lamps, and the hydrophobic oleophobic microporous membrane paster is superior to other protection modes and is an ideal method to overcome environmental load.

The invention provides a method for preparing a cellulose/nanometer titanium dioxide blending material in an ionic liquid solvent, wherein a fiber consists of the cellulose and nanometer titanium dioxide particles. The ionic liquid solvent can directly dissolve the cellulose to avoid a complicated process for traditionally dissolving the cellulose; the nanometer titanium dioxide can be added to form uniform and stable spinning solution of cellulose/nanometer titanium dioxide; and the cellulose/nanometer titanium dioxide blending fiber material can be obtained through fiber spinning plasticizing, stretching, washing and drying. The composite material prepared by the method has the advantages of strong intensity, breaking elongation and flexibility, maintains the performance of regenerated cellulose filament, and has the functions of antibacterial activity and ultraviolet absorption. In the composite material prepared by the method, the cellulose is firmly combined with the nanometer titanium dioxide, and the nanometer titanium dioxide is evenly distributed and is difficult to run off. An ionic liquid is used as the solvent to prepare the cellulose composite material, so the method has the advantages of simple and convenient process, recyclable solvent, convenient operation and low cost, and is suitable for large-scale industrial application.

The invention provides an apparatus for acquisition of marine sediment porewater and on-line in-situ detection of gas in the porewater. The apparatus can realize in-situ, rapid and cyclic acquisition of the porewater and on-line in-situ detection of the composition and content of gas in the porewater. According to a technical scheme in the invention, the apparatus is characterized by comprising a counterweight (1), a shell (2), a gas cylinder (17) and a single-layer sampling point device (13), wherein the counterweight (1) is connected with the shell (2), the counterweight (1) is provided with a power supply and a signal path device (18), and the gas cylinder (17) and the single-layer sampling point device (13) are arranged in the shell (2) and connected with each other. The invention also discloses a control method for the apparatus.

The invention provides intelligent self-cleaning dry fog de-dusting equipment. A water supply pipe and an gas supply pipe are connected respectively with a water gas mixer; a water inlet pressure sensor, a water supply adjusting valve and a water control electromagnetic valve are connected to the water supply pipe; a gas inlet pressure sensor, a gas supply adjusting valve, a gas storage tank filter and a gas outlet pressure sensor are connected sequentially to the gas supply pipe; the gas supply pipe is connected with the water gas mixer by the gas pressure adjusting valve; an fog spraying box, an outlet pressure sensor and a sprayer are arranged on the pipe of the rear part of the water gas mixer; a spraying vibrator is arranged on the sprayer. A connecting pipe is arranged between the gas supply adjusting valve pipe on the gas supply pipe and the water supply adjusting valve pipe, and a back blow valve is arranged on the connecting pipe. The equipment is controlled by a PLC. By utilizing the equipment, the water gas mixed vibrating fog spraying can be realized, the self-cleaning and blockage prevention of pipelines and sprayer can also be realized. The equipment has the advantages of good de-dusting effect and high reliability. And the equipment is suitable for being used as the dry fog de-dusting equipment.

The invention discloses in-situ hydrophobic modified aramid nano aerogel fiber as well as a preparation method and application thereof. The preparation method comprises the following steps of providing an aramid nano spinning solution; preparing hydrophobic modified aramid nano gel fiber by adopting a spinning technology, wherein a coagulating bath adopted by the spinning technology comprises a first organic solvent and a halogenating reagent, and the halogenating reagent comprises monobromoalkane, monochloroalkane, dibromoalkane, dichloroalkane, trichloroalkane and the like; and then carrying out drying treatment to obtain the in-situ hydrophobic modified aramid nano aerogel fiber. The in-situ hydrophobic modified aramid nano aerogel fiber prepared by the method has a unique three-dimensional porous network structure, lower heat conductivity, higher porosity, higher tensile strength and elongation at break and certain spinnability and structural stability, and can be applied to the field of spinning; a fabric woven from the hydrophobic fiber has self-cleaning ability; hydrophobic aramid nano aerogel fiber flocculus can also be prepared; and good hydrophobic performance is showed.

The invention belongs to the field of paint for the power grid, relates to the grounding grid, and particularly relates to conductive anticorrosive paint for the power grounding grid and a preparation method thereof. The paint is prepared from the following effective ingredients in parts by weight: 25-35 parts of matrix resin, 15-25 parts of conductive filler, 10-20 parts of a curing agent, 5-15 parts of a coupling agent, 5-10 parts of a dispersing agent and 10-15 parts of a diluting agent, wherein the conductive paint comprises carbon nano-tube, modified graphene and nano-grade titanium dioxide in a mass ratio of 1:2:1. According to the anticorrosive paint, corrosive medium can be effectively isolated by utilizing the characteristics of graphene and carbon nanotube, and the corrosion resistance of anticorrosive paint can be finally improved; the conductive performance of paint can be improved by utilizing the excellent conductive property of graphene, and the surface resistance of the paint is 103-105 omega; furthermore, the paint has certain self-cleaning capability due to addition of the nano-grade titanium dioxide, and the corrosion resistance of the paint can be improved.

The invention belongs to the field of material surface and inorganic porous material and specifically relates to a superhydrophobic coating and its preparation method. The preparation method comprises the following steps: a, adding 1-5 parts by weight of natural zeolite into 50-100 parts by weight of ethanol, carrying out ultrasonic dispersion for 10-30 min, adding 0.15-0.85 part by weight of perfluorodecyltrichlorosilane, and continuously carrying out ultrasonic dispersion for 10-30 min to obtain a dispersion liquid; b, immersing a base material into the dispersion liquid obtained in the step a for 3-5 min, taking out the base material and drying the base material at 50-70 DEG C for more than 30 min; and c, repeating the step b for two to three times so as to form the superhydrophobic coating on the surface of the base material. Natural zeolite belongs to an inorganic porous material and is easy to form a micro-nano structure in the coating. Meanwhile, there exist many hydroxide radicals on the surface of zeolite, and its surface energy is reduced after condensation between perfluorodecyltrichlorosilane and hydroxide radicals. Thus, the superhydrophobic effect is achieved. The natural zeolite is cheap and easily available. The preparation method is simple and easy for industrialization. The coating of the invention has a self-cleaning ability, is applicable to many base materials and is widely applied.

The invention provides high-performance water-based epoxy anticorrosive coating. The coating comprises a component A and a component B. The component A is prepared from the following components in parts by weight: 60-70 parts of waterborne epoxy resin emulsion, 5-8.5 parts of styrene-acrylic emulsion, 2-3.5 parts of a zinc oxide/graphene oxide composite material, 0.5-1.2 parts of cerium-doped nanotitanium dioxide, 1-2 parts of nano attapulgite, 3-5 parts of organic bentonite, 0.2-3 part of pigment, 0.3-0.5 part of a silane coupling agent, 2-3 parts of n-butyl alcohol, 0.3-0.6 part of a dispersing agent, 0.3-0.5 part of a defoamer, 0.2-0.4 part of a leveling agent and 18-25 part of deionized water. The component B is prepared from the following components in parts by weight: 30-35 parts ofpolyether amine, 3-5 parts of diethylenetriamine, 25-32 parts of wet sericite powder and 8-12 parts of talcum powder. The anticorrosive coating is environmentally friendly, all the raw materials arematched with one another, and the prepared coating is good in anticorrosive effect, excellent in mechanical property and high in adhesive force.

The invention discloses a preparation method of a multifunctional water treatment ceramisite filter material, and belongs to the field of environmental purification functional materials. The preparation method comprises the following technological steps: putting ceramisite into a hydrochloric acid solution with the concentration of 0.5 mol/L, carrying out constant temperature treatment on the solution and reaming ceramisites; preparing a titanium alkoxide and ceramisite mixture from ethanol, n-propanol, tetrabutyl titanate, glycerol and the ceramsites; adding a copper chloride aqueous solutionwith the solution of 0.3 mol/L into the titanium alkoxide and ceramisite mixture, stirring and filtering to obtain biofilm culturing ceramisites; drying the biofilm culturing ceramisites at 80 DEG Cfor 24 hours, calcining at the calcining temperature of 620 to 870 DEG C for 3 hours and naturally cooling to obtain the multifunctional water treatment ceramisite filter material. The filter materialcan utilize adsorption and biodegradation to purify sewage and also has self-cleaning ability under illumination, so that the multifunctional water treatment ceramisite filter material is suitable for water pollution treatment process with various forms.

The invention discloses an ammonia recovery process and equipment for a non-ferrous metal metallurgical industry. The process comprises the following steps: mixing a base liquid with a raw material liquid in a pipeline and then feeding a mixed liquid to the upper part of an ammonia still, and carrying out steam stripping to remove ammonia in the raw material liquid; feeding a low-ammonia aqueous solution obtained at the bottom of the ammonia still to the next process; condensing gas-phase ammonia on the top of the ammonia still in an ammonia dephlegmator so as to obtain high-concentration ammonia gas; feeding the high-concentration ammonia gas into the bottom of an ammonia recovery tower to be absorbed by soft water; and recovering and recycling the high-mass-concentration ammonia water obtained at the bottom of the ammonia recovery tower, and evacuating trace fixed gas at the top of the ammonia recovery tower. The equipment is suitable for the ammonia recovery process disclosed by the invention and mainly comprises the ammonia still and the ammonia recovery tower, wherein the upper part of the ammonia still is in pipe connection with an alkali formulating tank through an alkali liquid pump and in pipe connection with a raw material liquid through a raw material pump; the ammonia dephlegmator is arranged inside the upper part of the ammonia still, and the lower part of the ammonia still is externally connected with a reboiler and is in pipe connection with the upper part of the ammonia still; and the kettle bottom of the ammonia recovery tower is in pipe connection with an ammonia water pump, the upper part of the ammonia recovery tower is in pipe connection with a soft water pipe, and the top of the ammonia recovery tower is provided with a discharge pipe.

The invention discloses a self-cleaning high-crack-resistance self-leveling veneer mortar. The mortar is prepared from, by weight, 25-35% of white cement, 0.5-1.0% of a water reducing agent, 1-2% of an expanding agent, 0.2-0.5% of nano titanium dioxide, 2-6% of alkali activation pulverized fuel ash and 10-13% of water. The sum of the weight percentage of all the raw materials is 100%. The invention further discloses a preparation method of the self-cleaning high-crack-resistance self-leveling veneer mortar. The method comprises the following steps that after the titanium dioxide and the alkaliactivation pulverized fuel ash are mixed and stirred, the mixture, white Portland cement, metakaolin, redispersible emulsion powder and the expanding agent are added into a stirrer according to a proportion, white sand is added for stirring for one minute, and finally fibers are added for stirring for 3-5 minutes. The self-cleaning high-crack-resistance self-leveling veneer mortar has better crack resistance, fluidity and self-cleaning performance and can be widely applied to large-size outer wall face layers of assembly-type buildings, and the social and economic benefits are obvious.

The invention relates to the field of coatings, and specifically relates to an anti-pollution flashover coating for an electrical device and a preparation method thereof. The coating is hydrophobic, insulated and self-cleaning coating developed based on pollution flashover occurring principle and is applicable to the surface treatment of an outdoor electrical device, in particular an insulator. The anti-pollution flashover coating comprises 5-20 parts of organic silicon resin, 2-12 parts of fluoridized titanium dioxide powder, 1-10 parts of fumed silica powder, 0.1-0.5 part of silane couplingagent, 0.2-3 parts of auxiliary, 0.3-2 parts of carbon black, 50-80 parts of mixed solvent, and 8-15 parts of a curing agent. The anti-pollution flashover coating has the beneficial effects of being hydrophobic, anti-pollution, self-cleaning, and insulated, and is applicable to an outer coating layer of the outdoor electrical device; nano silica and the silane coupling agent are compounded, so that the superficiality of the coating layer is greatly reduced, and the hydrophobic and oleophobic performances of the coating layer are improved; nano fluoridized titanium dioxide is added, so that thecoating is capable of self-cleaning; the coating has a good adhering performance relative to a base material, and is high in weather resistance, resistant to high- and low-temperature, resistance toillumination, and resistance to radiativity.