398results about How to "Improve self-cleaning function" patented technology

The invention relates to a preparation method of a hyperhydrophobic PVDF membrane and a product thereof. The preparation method comprises the following steps: 1. preparation of a PDVF membrane; 2. plasma treatment of the PDVF membrane: performing the plasma treatment on the PDVF membrane in a nitrogen, oxygen, air, argon or helium atmosphere at a power of 100-200W under a vacuum degree of 8-11Pa for 5-15min; and 3. surface modification of the PDVF membrane: preparing an organosilane solution with a volume concentration of 1/10-1/3, and placing the organosilane solution in a closed vessel with the relative humidity of 30-60% for use; then placing the PDVF membrane subject to the plasma treatment into the closed vessel, and treating the PDVF membrane by a chemical bath deposition method for 8-12min, or treating the PDVF membrane under a vapor condition by a chemical vapor deposition method for 50-120min; then adequately washing the PDVF membrane sequentially with toluene, ethanol and aqueous ethanol solution at an ethanol/water ratio of 1:1 at the normal temperature; drying at the temperature of 100-120 DEG C for 10-15min to obtain the hyperhydrophobic PVDF membrane. The PVDF membrane product is prepared by the preparation method of the hyperhydrophobic PVDF membrane.

The invention provides a method for manufacturing a metal surface self-cleaning high-protection film. The method comprises two steps of molybdate solution soaking treatment and plant corrosion inhibitor-low-surface-energy material collaborative modification treatment. According to the molybdate solution soaking treatment step, a composite film which is of a specific micro/nano coarse structure, has the good protection effect and is composed of metallic oxides, molybdenum oxide and metal molybdate can be formed on a metal surface, and therefore according to the plant corrosion inhibitor-low-surface-energy material collaborative modification treatment step, efficient green plant corrosion inhibitors can be introduced into the film, and the protection effect can be obviously improved. Due to the hydrophobization effect of the low-surface-energy material on the film, the film has the self-cleaning function, the pollution can be avoided, the probability of direct contact of metal materials and corrosive media can be reduced, and the protection effect of the film can be further improved. The method has the advantages of being environmentally friendly, simple in process, convenient to operate, capable of being easily and industrially produced in a large-scale mode and the like.

The invention discloses a superhydrophobic inorganic organic nano composite polymeric coating material and a preparation method thereof. The coating material is prepared from 30 to 98 mass percent of thermosetting polymeric precursor and 10 to 70 mass percent of surface functionalized nanoparticle under the action of 0 to 5 mass percent curing agent, wherein the obtained surface water contact angle and rolling angle of the material are 120 to 180 DEG and 1 to 20 DEG respectively; and a falling water drop which is spherical can bounce up and can freely roll on the surface. The method has the characteristic of simple preparation process by using the chemical reaction between organic groups on the surfaces of the polymeric precursor and the modified nanoparticle in the solution. The coating material has the functions of stain resistance, dust prevention and self cleaning.

A titanium dioxide film (2) having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50% and whose thickness is 0.1 to 5 .mu.m or so, is formed on a transparent substrate (1) constituted by a glass plate or the like. Preferably, a precoat film (3), which has optical transmissivity and is constituted by a SiO.sub.2 film having a thickness of 0.02 to 0.2 .mu.m or so, is provided between the transparent substrate (1) and the titanium dioxide film (2). Thereby, excellent photocatalytic action and optical transmissivity can be obtained. Moreover, members composing various structures such as a glass window, which are especially required to have optical transparency, can be further provided with photocatalytic activities.

The invention relates to a self-cleaning sanitary ware glaze with hydrophobic property and a preparation method thereof. The self-cleaning sanitary ware graze comprises ground graze and cover glaze and is characterized in that: the cover glaze is added with fluoride and titanium oxide; refinement is done to the grain size of the glaze material which is burned at a time under the temperature of 1150 to 1300 DEG C, thus obtaining the self-cleaning sanitary ware glaze. The self-cleaning sanitary ware glaze of the invention has the advantage of ensuring the prepared sanitary ware has lucent and clean surfaces and lasting self-clean effect and the surfaces of the sanitary ware are easily cleaned with stain resistant.

The preparation method of high-elasticity external wall paint includes the following steps: adding 7-12 portions of water, 0.2-0.4 portions of sodium polycarboxylate, 0.2-0.3 portions of mildew-proof agent deconil M, in-tank-preservative chloromethyl-methyl isothiazolinone and oxirene alkyl acid ether into dispersing tank; slowly adding hydroxyethyl cellulose, at the same time mechanically stirring and adding alcohol ester 12, propanediol, defoaming agent SN345-organic silicon and inorganic silicon mixture, rutile titanium pigment and calcium carbonate (800 meshes); transferring the above-mentioned materials, liquid into mixing tank, and adding 34-39 portions of elastic polyacrylic emulsion, 8-10 portions of pure polyacrylic emulsion, 5.6-10 portions of OP-62B covering polymer and other.

The invention discloses a medicine-and-food dual-purpose preparation for treating pneumoconiosis, clearing away the lung-heat and nourishing the heart and a preparation method for the medicine-and-food dual-purpose preparation. The medicine-and-food dual-purpose preparation is made of aizoon stonecrop herb, herba houttuyniae, polygonatum kingianum, polygonatum odoratum, platycodon grandiflorum, almond, radix glycyrrhizae, lilies, folium mori, white fungus, coix seed, citrus, mint and green tea. The medicine-and-food dual-purpose preparation can be used as a medicine and has the functions of clearing away the lung-heat, relieving cough and reducing sputum and the functions of promoting blood circulation to remove blood stasis, nourishing the heart and smoothing the sphygmus. The medicine-and-food dual-purpose preparation is also healthy food. The raw materials adopted by the medicine-and-food dual-purpose preparation are medicine-and-food medicines, can be eaten for a long time and cannot generate any toxic and side effect on a human body. The medicine-and-food dual-purpose preparation is healthy and health-protection; the lung organ is stimulated to secrete mucus and promote sputum excretion through functions of the components, and the self-cleaning function of the lung is realized; the blood is purified; the oxyhemoglobin saturation is enhanced; the heart can be protected from being injured; therefore, the medicine-and-food dual-purpose preparation has the effects of preventing and treating the pneumoconiosis and cardiovascular diseases.

The invention relates to a silicon-containing acrylate-polyester resin which is prepared by carrying out free-radical polymerization and polycondensation on functional monomers composed of organic silison monomer (especially vinyl siloxane monomer) and multiple (methyl) acrylic acid (acrylate) monomers, polybasic carboxylic acids and polybasic alcohols. By increasing the quantity and varieties of the polymerization monomers, the prepared resin effectively combines the advantages of the organic silicon resin, acrylate resin and polyester resin, so that the coat prepared by using the resin as the base material not only has excellent functions of pollution resistance and self-cleaning, but also has the advantages of excellent corrosion resistance, high/low temperature stability, weather resistance, wear resistance, shock resistance, chemical medium resistance, corrosion resistance and solvent resistance as well as sufficient hardness, flexibility, brightness, fullness and the like.

The invention relates to a kitchen sink, in particular to a self-cleaning type water-saving anti-blocking sink. The sink comprises a sink body and a water discharging pipe; a water distributor is serially connected between the sink body and the water discharging pipe; the water distributor comprises a cylindrical shell, a water seal mounted at the upper part of the cylindrical shell, a conical filter net mounted in the center of the lower part of the conical shell, and a power apparatus for driving the conical filter net to rotate; the water discharging pipe is arranged in the bottom center of the cylindrical shell; a scraping plate in contact with the outer wall of the conical filter net is arranged on the inner wall of the cylindrical shell; a residue discharging hole is formed in the upper end part of the scraping plate; the power apparatus comprises a centrifugal pump; a rotary shaft of the centrifugal pump penetrates through the water discharging pipe and is fixed with a rotary shaft of the conical filter net; a tangential hole of the centrifugal pump serves as a water inlet; an axial hole of the centrifugal pump serves as a water outlet and is connected with a tap; a hairbrush in contact with the conical filter net is arranged on the inner side of the conical filter net; and the hairbrush is fixed at the bottom of the cylindrical shell. The sink adopting the technical scheme is good in anti-blocking effect, can be automatically cleaned, and has a water-saving effect.

The present invention provides an antisticking doodle proof coating, the main component includes 20-70% fluorine polymer resin, 1-7% fluorine-containing surfactant, 2-7% silicon-containing surfactant, 1-5% nano-powder, 0.1-2% metal drier, 20-80% solvent. The antisticking doodle proof coating is coated on the outdoor facilities of all kinds of material of metal, porcelain, cement, coating, oil paint, frp, wood, the antisticking doodle proof coating plays a best important role in sticking and coating resistance, used for outer wall coating decoration at the same time, having strong self-clearing impact, making dust and dirt automatically flush by rain or washing cleanlily by water.

The invention relates to an aluminum product surface super-hydrophobic film and a making method thereof. The method comprises the following steps: 1, placing an aluminum product in an electrolyte as an anode, and anodizing under a current density of 0.1-0.5A.cm<-2> for 1-20min to obtain an anodized aluminum surface; and 2, immersing the anodized aluminum surface in an ethanol solution containing silicon fluoride for at least 1min, carrying out heat treatment on the obtained workpiece at 100-200DEG C for 5-40min, and naturally cooling to obtain the aluminum product surface super-hydrophobic film. The making method of the super-hydrophobic surface has the advantages of simplicity, low cost and easy industrialization. The super-hydrophobic surface made in the invention has a contact angle exceeding 150DEG, a roll angle of below 10DEG and stable hydrophobicity. The surface has the advantages of very good super-hydrophobic function, very good automatic cleaning function, excellent wear resistance and excellent corrosion resistance.

The invention provides a self-cleaned cement based composite material with high toughness. The preparation method comprises the following steps: adding cement, fine aggregates, coal ash, silicon ash, pelletized blast furnace slags, metakaolin and nano titanium dioxide into a stirrer, and stirring to prepare dry powder; then, adding water and a water reducing agent to prepare slurry; finally, adding a certain amount of short fibers to finally obtain the self-cleaned cement based composite material with high toughness. The self-cleaned cement based composite material not only has good anti-tension and anti-crack characteristics, but also has the self-cleaning function. The self-cleaned cement based composite material can be widely applied to the fields of house building, road and bridge projects, national defense construction and the like and is remarkable in social and economical benefits.

The invention discloses an inorganic-organic hybrid super-hydrophilic self-cleaning coating and a production method thereof. The inorganic-organic hybrid super-hydrophilic self-cleaning coating is prepared from the following raw materials in percentage by weight: 60-90% of a solvent, 5-20% of a compound binder, 3-10% of a curing agent and 1-10% of a functional material. By adopting an inorganic-organic hybrid process, the inorganic-organic hybrid super-hydrophilic self-cleaning coating which is excellent in various performances such as hydrophilicity, dust resistance, pollution prevention, mildew resistance, weather resistance and durability is prepared. The coating is coated on the surface of a base material to form a concave-convex film of a micro-nano structure, so that the surface of the base material obtains the functions of hydrophilicity, dust resistance, pollution prevention, self-cleaning property and the like. The coating disclosed by the invention is suitable for large-area construction, has the advantages of high film forming hardness, high self-cleaning property, good wear resistance and good durability, and can be applied to surfaces of building external walls, glass, tiles, marbles, artificial stones, plastic, aluminum sheets, displays, walls and the like.

The invention provides a high-temperature metal hard seal ball valve for granular media. The high-temperature metal hard seal ball valve comprises a valve body, a ball body, a valve rod, a valve seat and a bottom cover, wherein the ball body is arranged in a cavity in the valve body, the valve rod connected with the ball body extends out of the valve body through a center through hole at the upper part of the valve body, the bottom cover is positioned at the bottom of the valve body and comprises a bottom cover baseplate and a bottom cover shaft, the bottom cover baseplate is movably connected with the valve body, the bottom cover shaft penetrates through a through hole at the lower part of the valve body and is connected with the ball body in the cavity of the valve body, the ball body and the valve seat are made of metal materials, the valve seat is mounted in the valve body and on the inner wall which is in contact with the ball body, a spring seat is arranged on the outer side of the valve seat, a disc spring is mounted in a groove between the spring seat and the valve seat, a pressure ring is arranged on the outer side of the spring seat, the pressure ring is fixedly mounted on the spring seat through a screw, a pendant collet for playing a sealing role is arranged in the contact position of the spring seat, the pressure ring and the valve body, an O ring is arranged in the groove between the valve seat and the valve body, and the O ring is made of fluorine rubber.

The invention discloses a method for preparing a polyvinylidene fluoride-hexafluoropropylene super-hydrophobic composite film. According to the method, the surface of a non-woven fabric is respectively coated with a porous supporting layer and a super-hydrophobic layer in a blade coating manner by adopting an immersion-precipitation phase transformation method, and the size of the pore diameter of a composite film is controlled by virtue of the porous supporting layer. According to the polyvinylidene fluoride-hexafluoropropylene super-hydrophobic composite film, six fluorine atoms in the structure unit show high hydrophobic performance, and the super-hydrophobic layer is formed on the surface of the porous supporting layer by delayed phase transformation. The method is simple to operate, low in manufacture cost and easy to industrialize; the super-hydrophobic composite film has a water contact angle of 153+/-3 degrees, a rolling angle of 3+/-1 degrees and pore diameter of 0.05-2 microns, is stable in performance and high in mechanical strength, shows excellent super-hydrophobic performance and self-cleaning function, and can be used in liquid degassing, defoaming, film distillation and other industries.

The invention relates to a low-flow resistance rotor with self-cleaning function and heat transfer enhancement used in a heat transfer tube, which comprises a plurality of rotors, supporting frames and a connecting shaft line. The supporting frames are fixed at the two ends of the heat transfer tube. The two ends of the connecting shaft line are fixed on the supporting frames respectively. The plurality of rotors are skewered on the connecting shaft line between the two supporting frames. The rotor consists of a hollow shaft and fins, wherein the hollow shaft is provided thereon with one and more fin(s), each fin is oblique to the central line of the hollow shaft, the working surface of each fin is swirl or flat or a combination thereof, and the fins are fixed uniformly on the outer surface of the hollowing shaft. In the inventive technical proposal, a fluid inside a tube can drive the rotor by the fins to rotate at a proper speed, so as to inhibit and eliminate the deposition of dirt, the fins can disturb the fluid inside the tube to enhance the convection heat transfer, the rotor occupies a small area inside the heat transfer tube to increase the axial flow area and reduce the blockage rate and flow resistance in the heat transfer tube, and the service life of the rotor is significantly prolonged.

The invention discloses a sewage treatment system for river ways in a city. The system comprises a sewage pond, a stop net for filtering away suspension and chemical matter in sewage, an adjusting pond, a concrete pond, a settling pond, an anaerobic pond, an aerobic pond, an anoxia pond and a filter device. Microbial flora is added into the anaerobic pond. Nitrosomas and nitromonas are added into the aerobic pond. Denitrification bacteria are added into the anoxia pond. A filter layer, an adsorption layer, a filler layer and a heavy metal absorption layer are sequentially arranged in the filter device from bottom to top. The top of the filter device is connected with a micro-ecological filter pond through a drain pipe. By means of the sewage treatment system and a technology for river ways in the city, water body conditions are analyzed, and ecological regulation and control are achieved; by means of the method of combining exogenous pollution control, endogenous pollution control and micro-ecological system repair, the pollution problem of river ways in the city can be effectively solved, and a good pollution treatment effect is achieved. The invention further discloses the sewage treatment technology for river ways in the city.

The invention discloses an oily sludge advanced treatment technology which comprises the following contents: oily sludge in a raw material storage sludge-tank enters a sludge mixing tank; a demulsifier is added to carry out demulsification treatment; demulsified oily sludge enters screw-type sludge dewatering equipment to undergo solid-liquid separation so as to obtain a filtrate and sludge cake; the filtrate enters a two-phase cyclone to be separated; after two-phase separation, excess sludge at the lower layer flows back to the raw material storage sludge-tank, a mixed liquor at the upper layer is sent into a gas-liquid mixing tank to be mixed with the air and then enters a separation pond to carry out primary separation of sump oil and sewage; sump oil is recovered to a sump oil tank by the use of a sludge scraper; sewage enters a filter to separate suspended particles and residual sump oil in the sewage from water; sump oil separated from the top of the filter is recovered to a sump oil recovery tank; and sewage discharged from the filter is sent to a sewage treatment plant to undergo subsequent processing. By the technology, water content of the oily sludge can be reduced from 80-98% to about 50%, and most crude oil in the oily sludge can be recovered. Thus, sludge subsequent processing difficulty is greatly reduced. The technology provided by the invention has a wide range of application, is especially suitable for processing of oily sludge at the bottom of an oil-tank, dross and activated sludge as well as processing of various oily sludge generated from oil exploitation and storage transportation enterprises.

The invention discloses an ultramicro bubble water purification device which comprises a floating body device floating on a water surface, a guiding device arranged below the water surface and a diving flow-pushing device arranged below the water surface, wherein a micro-nano bubble generation device, a controller and a pressure swing adsorption oxygen generation device are arranged on the floating body device; the floating body device comprises a buoy floating on the water surface, fixed plate faces on the buoy and anchors for controlling the whole floating body device to a certain position on the water surface; the micro-nano bubble generation device comprises a water inlet unit, a gas-liquid mixing unit and a bubble jet unit. The ultramicro bubble water purification device provided by the invention is simple in structure and convenient to use, can solve the problems that a water purification device at present is insufficient in oxygen increasing and damages natural water ecological environment and is high in energy consumption, can greatly reduce energy consumption and quickly increase dissolved oxygen in the water, and does not cause the damage of the whole water ecological environment while changing the living environment of aquatic lives in water.

The invention relates to a water-based organic ceramic sprayed aluminum veneer and a manufacturing method thereof, and belongs to the technical field of curtain wall decorative boards. The water-based organic ceramic sprayed aluminum veneer comprises a passivation layer I, an aluminum baseplate, a passivation layer II, a bottom paint layer and a surface paint layer in sequence from top to bottom, wherein the bottom surface and the surface of the aluminum baseplate are conducted by passivation processing to obtain the passivation layer I and the passivation layer II respectively; the bottom paint layer is formed by spraying a water-based organic ceramic material for 15-20 <Mu>m on the passivation layer II; the surface paint layer is formed by spraying the water-based organic ceramic material for 20-30 Mum on the bottom paint layer. The sprayed aluminum veneer has the advantages that the aluminum veneer is controllable in range of glossiness, high in intensity and hardness, scratch resistant, acidproof, highly flame-retardant, and aging-resistant, provided with self-cleaning performance, and large in color choosing space.