38results about How to "Improve self-cleaning performance" patented technology

The invention discloses a high-strength glass fiber-made air-filter paper and a preparation method thereof. The high-strength glass fiber-made air-filter paper comprises glass fibers and a binder. The glass fibers are randomly distributed in a plane, micron-sized gaps are formed between the multiple glass fibers, and the binder coats interlacing points of the glass fibers so that a netted junction surface is formed. The glass fibers comprise chopped glass fibers having the diameter of 6-20 microns and/or glass wool fibers having the diameter of 1-10 microns. The binder comprises inorganic silica gel or/and colloidal-state alumina. The high-strength glass fiber-made air-filter paper has enough strength and excellent gas-liquid separation and liquid-liquid separation capability at a normal temperature and a high temperature, and can resist multitime influence produced by air speed and flow. The high-strength glass fiber-made air-filter paper can be used as a heat insulating element or a heat insulating filler in the fields of buildings, machinery and heat energy and can also be used for an air cleaning device.

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 discloses high-strength glass fiber air filter paper and a preparation method thereof. The air filter paper comprises glass fibers and an adhesive, wherein the glass fibers are randomly and uniformly distributed in a plane, micron-sized holes are formed among the plurality of glass fibers, and the adhesive is used for coating interlacing points among the glass fibers to form a net-shaped connecting surface; the glass fibers comprise short cut glass fibers with the diameters of 6 microns to 20 microns and/or glass cotton fibers with the diameters of 1 micron to 10 microns; the adhesive comprises inorganic silica gel, colloidal alumina or combination of the inorganic silica gel and the colloidal alumina. The air filter paper has the advantages of sufficient strength and excellent gas-liquid and liquid-liquid separation performance at normal and high temperatures and capability of resisting multi-time invasion and attack of wind speed and flow rate; in addition, the air filter paper can be used as a heat-insulated element or a heat-insulated filler in the fields of building, machinery, heat energy and the like, and also can be used as an air purification device.

The invention discloses a semipermeable membrane which is formed from graphene provided with nanopores. The semipermeable membrane provided by the invention has extremely strong mechanical performance (strength: 130GPa), good thermal stability (can bear high temperature of 2300 DEG C) and excellent chemical and electro-chemical stability, and can be effectively used as a selective pervious membrane in permeation.

The invention relates to a super-hydrophobic coating material and a preparation method thereof.The super-hydrophobic coating material is an amphipathic SiO2 microsphere/water-based polyurethane composite, the contact angle of the material and water is 153-161 degrees, and the rolling angle of water drops on the surface of the material is 4.8-7.6 degrees.The preparation method includes the steps of firstly, preparing suspension liquid of amphipathic SiO2 microspheres; secondly, mixing the suspension liquid of amphipathic SiO2 microspheres with water-based polyurethane dispersing liquid to be evenly dispersed through ultrasonic waves to obtain a coating solution, evenly coating the surface of the base material with the coating solution, and drying to obtain the super-hydrophobic coating material.The amphipathic SiO2 microspheres are self-assembled in the water-based polyurethane dispersing liquid to form the composite of a uniform surface microstructure; the coating material has quite excellent waterproofing performance and self-cleaning performance on the surface and can be widely applied to the fields of building internal and external wall decoration plates, building sunshade plates and the like.

The invention discloses a self-cleaning heat dissipation coating which is composed of the following raw materials by weight: 1 part of A material and 1-1.2parts of B material; the A material comprises the following raw materials by weight: 30-40 parts of bisphenol-S epoxy resin, 0.1-0.2 part of polyethylene wax powder, 1-2 parts of nano diatomite powder, 1-2 parts of zinc naphthenate, 1-2 parts of tetramethylethylenediamine, 20-30 parts of ethyl acetate, 1-2 parts of silver nitrate, 1-2 parts of melamine cyanurate, 2-4 parts of montmorillonoid, 1-2 parts of epoxy octyl stearate and 1-2 parts of silane coupling agent KH792; by reaction of the silver nitrate, copper sulfate and other antibacterial agents and the silane coupling agent, nano diatomite powder and the like, silver enhances self cleaning, antimicrobial and corrosion resistant performance of a coating film.

The invention discloses a pulsator washing machine and a water-holding barrel cover thereof. The water-holding barrel cover is arranged at the top of a water-holding barrel internally provided with an inner drum rotating relative to the water-holding barrel. The water-holding barrel cover comprises a cover body formed in an annular shape, first water-guide ribs and second water-guide ribs. The first water-guide ribs and the second water-guide ribs are arranged on the surface on one side of the cover body at intervals and deviate from the cover body in a radial direction from the inside to the outside. The extending direction from the outside to the inside of the first water-guide ribs is configured in that water flow is guided into the inner drum along the tangential direction of rotating direction of the inner drum. The inner ends of the second water-guide ribs extend toward the center of the cover body. The water-holding barrel cover provided by the embodiment has following beneficial effects: cleanliness of clothes is greatly improved; great waterflow mechanical force functions as a cleaning agent to the greatest extent such that more clothes can be washed with fewer cleaning agent; and clothes is not intertwined.

The invention provides an anti-fogging self-cleaning weakening ultraviolet glass coating and a preparation method thereof. The coating is prepared from the following raw materials in percentage by mass: 0.1-1.5 parts of an emulsifier, 0.1-1.5 parts of polyving akohol, 0.2-1.3 parts of an anionic surfactant, 0.1-1.3 parts of a photocatalyst, 0.1-1 parts of sodium metasilicate, 1-15 parts of isopropanol, 3-8 parts of glycerin, 0.05-0.3 parts of essence, 30-50 parts of ethanol, and the balance of deionized water, wherein the emulsifier is octylphenol polyoxyethylene ether and octylphenyl polyoxyethylene ether; while preparing, the raw materials are mixed, and then a mixture is uniformly stirred. Compared with the prior art, the glass coating disclosed by the invention has strong photocatalytic activity and lasting fogging resistance, is capable of weakening ultraviolet light and has excellent self-cleaning ability and sterilization ability, and is easily prepared.

The invention discloses medium-transparency wear-resistant self-cleaning glass and a preparation method thereof. The glass comprises a glass substrate and a thin film layer formed on the surface of the glass substrate by using a magnetron sputtering method, wherein the thin film layer comprises the following raw materials: in percent by mass, 15-25% of hydroxyl oxidize iron, 5-15% of fullerene carboxylic acid derivatives and 65-75% of nano titanium dioxide, and the obtained thin film layer has a thickness of 100-300 nm. The medium-transparency wear-resistant self-cleaning glass has high photocatalytic activity, high hydrophilicity, strong self-cleaning ability, an oleic acid degradation rate of 87.4% and a methyl orange degradation rate of 90.0%, the transmittance to visible light can reach 74.2%, and the wear resistance is good; and the medium-transparency wear-resistant self-cleaning glass has a good self-cleaning effect, high visible light transmittance and use durability at the same time.

The invention discloses a loop heat pipe with a multi-scale structure synergistic mixed wettability inner surface. All parts are sequentially connected in series to form a cycle, the interior of the loop heat pipe is provided with the multi-scale structure synergistic mixed wettability inner surface, and the loop heat pipe comprises an evaporator, a condenser, a steam line and a liquid line, and the evaporator is provided with a multi-scale capillary core with gradient hydrophilicity and hydrophobicity. The size is gradually reduced in the circulation direction, the surface is transited from hydrophobicity to hydrophilicity, hydrophobic points are arranged in a hydrophilic area, and hydrophilic points are arranged in a hydrophobic area. The condenser is provided with a multi-scale micro-column inner surface with gradient hydrophobicity, the surface of a nanoneedle transits from super hydrophobicity to hydrophobicity in the circulation direction, and the top end of the embedded micro-column is hydrophilic and forms a hydrophilic point. The steam line and the liquid line are reducing pipes, the pipe diameter and the size of the porous structure on the inner surface are gradually reduced in the circulation direction, and gradient wettability is achieved. By means of the reasonably-designed cooperation mode of the surface multi-scale structure and the mixed wettability, the requirements of different areas and stages of the loop heat pipe for the structure scale and wettability can be met, and the heat exchange performance of the loop heat pipe is improved through all-around cooperation.

The invention relates to a quartz crystal microbalance sensor, a preparation method and application thereof, the quartz crystal microbalance sensor comprises a crystal oscillator, the electrode surface of the crystal oscillator is modified with a self-cleaning coating, and the self-cleaning coating comprises a ZnO/TiO2 nano composite film. According to the technical scheme, ZnO gel is prepared through a sol-gel method and then reacts with beta-cyclodextrin to obtain a beta-cyclodextrin modified ZnO nano composite film, then the beta-cyclodextrin modified ZnO nano composite film is immersed into suspension liquid containing titanium dioxide P25 and then dried to obtain a ZnO/TiO2 nano composite film, the prepared ZnO/TiO2 nano composite film is modified on the electrode surface of the crystal oscillator, therefore, based on the characteristics of the ZnO/TiO2 nano composite film, the purpose of self-cleaning of the crystal oscillator electrode can be achieved without immersing the crystal oscillator electrode in a cleaning solution, and the service life of the crystal oscillator electrode can be effectively prolonged.

The invention relates to the field of textile printing and dyeing, and especially relates to a self-cleaning dye for overflow dyeing. The self-cleaning dye for overflow dyeing comprises a disperse dye with the mass being 8-9% of the mass of a dyed material, a high temperature leveling agent, a dispersant, a softener, a fire retardant, a moisture absorption and perspiration agent, a self-cleaning agent, and the balance of water, wherein a mass/volume (g/L) ratio of the high temperature leveling agent to water is 4.5-5.0:1, a mass/volume (g/L) ratio of the dispersant to water is 2.5-3:1, a mass/volume (g/L) ratio of the softener to water is 3-3.5:1, a mass/volume (g/L) ratio of the fire retardant to water is 5-7:1, a mass/volume (g/L) ratio of the moisture absorption and perspiration agent to water is 2.5-3:1, a mass/volume (g/L) ratio of the self-cleaning agent to water is 2-2.5:1, and a weight ratio of the dyed material to water is 1:10-15. The dyed material has good brilliant luster, has high color fastness reaching above three level, has a high dyeing degree reaching 98.5%, has a color leveling rate reaching 99.5% or more, and also has the characteristics of extremely good fluffiness, extremely strong fire retardation property, moisture absorption, fast dryness, excellent antistatic and decontamination effects, soft handle, and extremely good dirt resisting and self-cleaning effects.

The invention discloses a gradient color organic silicon nano composite material as well as a production process and application thereof, and relates to the technical field of functional high polymer materials. The composite material is prepared from the following raw materials in parts by weight: 45 to 60 parts of modified polyacrylate emulsion, 18 to 24 parts of aluminum silicate, 8 to 14 parts of reversible color-changing pigment, 2 to 4 parts of pigment additive, 16 to 22 parts of water, 1 to 4 parts of thickening agent, 0.8 to 3 parts of flatting agent, 0.8 to 2 parts of wetting agent, 0.5 to 2 parts of defoaming agent, 0.2 to 1.5 parts of dispersing agent and 0.5 to 1 part of coalescing agent. After a substrate material is coated with the gradient color composite material, the gradient color composite material has high thermochromic capacity, the high temperature resistance and the acid and alkali corrosion resistance of a coating are enhanced, the adhesive force is remarkably improved, and the hardness is higher; and meanwhile, the surface of the coating has certain self-cleaning capability, and the surface glossiness is enhanced.

The invention relates to a quartz crystal microbalance sensor and a preparation method thereof, and the preparation method comprises the following steps: S1, immersing an electrode of a crystal oscillator into a MnO solution, taking out the electrode, repeating for 3-4 times, drying and annealing to prepare an electrode coated with MnO seeds; s2, preparing a mixed solution of Mn (NO3) 2, hexamethylenetetramine and cycloheptaose, and immersing the electrode coated with the MnO seeds into the mixed solution to prepare an electrode coated with a MnO nano composite membrane; s3, titanium dioxide powder is dissolved in deionized water, ultrasonic dispersion treatment is carried out, insoluble particles are removed through centrifugation, and suspension liquid containing titanium dioxide is prepared; and S4, immersing the prepared electrode coated with the MnO nano-composite film into a suspension containing titanium dioxide, and drying at room temperature to prepare the electrode modified with the MnO/TiO2 nano-composite film. According to the technical scheme, the sensor with high responsiveness, high sensitivity and high stability is obtained; a self-cleaning coating can be modified on the surface of the crystal oscillator electrode, and self-cleaning can be achieved.

The invention discloses mildew-proof and flame-retardant wallpaper and a preparation method thereof. According to the invention, the mildew-proof layer is arranged on the surface of the wallpaper, so that the antibacterial ability of the wallpaper is enhanced, and the self-cleaning performance of the surface of the wallpaper is enhanced by virtue of the decomposition ability of N-doped zinc oxide contained in the mildew-proof layer; and birnessite used in the flame-retardant layer is utilized to adsorb moisture and decompose formaldehyde, so that the environment-friendly property of the wallpaper is enhanced while the ink layer is protected from stripping, the harm to a human body is reduced, and the wallpaper has a wide application prospect.

The invention relates to a super-hydrophobic coating with self-cleaning and organic pollutant degradation functions and a preparation method of the super-hydrophobic coating. The preparation method comprises the following steps: (1) dissolving hydrophobic silicon dioxide and a film-forming agent into an alcohol solvent at normal temperature, and uniformly stirring the mixture under ultrasonic waves to obtain a solution A; (2) adding nano titanium dioxide and a dispersing agent into absolute ethyl alcohol, and uniformly stirring the mixture to obtain a solution B; (3) dropwise adding the solution B into the solution A, and stirring the mixture for 2-3 hours after dropwise adding to form milky white liquid; (4) standing the milky white liquid for 18-24 hours, and drying the milky white liquid in a drying oven to obtain dried gel; and (5) grinding the dried gel, and calcining the ground gel in a muffle furnace to obtain the super-hydrophobic coating. The preparation method is simple in process and mild in reaction condition, fluorine-containing compound modification and ammonia water treatment are not needed, the safety performance is higher, and the prepared super-hydrophobic coatingnot only has a self-cleaning function, but also can degrade indoor organic pollutants.