695results about How to "Improve self-cleaning effect" patented technology

The invention relates to a insulating coating whose constituents include film forming substance 15-65 weight parts, nano porous SiO2 3-20 weight parts, nano iron oxide yellow 1-12 weight parts, dyestuff 5-30 weight parts, gasket material 3-22 weight parts, auxiliary agent 0.4-8 weight parts, and dissolvent 6-30 weight parts.

An embedment device for use in a structural panel production line wherein a slurry is transported on a moving carrier relative to a support frame, and chopped fibers are deposited upon the slurry, includes a first elongate shaft secured to the support frame and having a first plurality of axially spaced disks, a second elongate shaft secured to the support frame and having a second plurality of axially spaced disks, the first shaft being disposed relative to the second shaft so that the disks intermesh with each other. The intermeshing relationship enhances embedment of the fibers into the slurry and also prevents clogging of the device by prematurely set slurry particles.

The invention relates to a waterborne heat-insulating flame-retardant multifunctional nano coating and a preparation method thereof. The coating consists of the following components in part by weight: 48 to 52 parts of waterborne resin and 30 to 50 parts of nano pigment fillers (nano titanium dioxide, nano titanium dioxide-coated hollow glass microspheres, nano titanium dioxide-coated hollow ceramic microspheres and nano antimony-doped tin dioxide (ATO) particles), size and auxiliary materials such as film-forming additive and coupling agent. The preparation method includes the steps that: the nano fillers and the size are first dipped into the waterborne resin, the auxiliary materials are then sequentially added and stirred, and thereby the heat-insulating flame-retardant multifunctional nano coating is obtained. The processing technique is simple, the component proportion is reasonable, and the prepared coating has the advantages of high heat resistance, high reflectivity, high radiative heat conductivity, certain fire resistance, high-efficient heat insulation, excellent mechanical and chemical properties, environment-friendliness, stain resistance, flame retardance and energy saving. The coating can be coated on outside facilities such as outer walls and building roofs.

The invention discloses a method for preparing a superhydrophobic coating by adopting a supersonic electric arc spaying process. The method comprises the following steps of: firstly, roughening the surface of a substrate; then preparing a coating on the surface of the substrate by adopting a supersonic electric arc spaying technique; and finally, modifying the surface of the coating with a substance with low surface energy, and drying to form a superhydrophobic surface. The method disclosed by the invention has the advantages of easy operation, low cost and good repeatability and is suitable for industrial production. In addition, the method can be used for preparing superhydrophobic coatings on a variety of surfaces such as metal surfaces, glass surfaces and tile surfaces, thus the scope of application of the superhydrophobic coating can be broadened, and large-scale production with high market value can be archived.

The invention discloses a method for improving the mechanical stability of super-hydrophobic wood, belonging to the field of super-hydrophobic wood. The super-hydrophobic wood prepared by adopting the method disclosed by the invention overcomes the defects of poor surface mechanical property, short service life and the like of the super-hydrophobic wood prepared by adopting a conventional method, and is improved in durability and good in application prospect. A contact angle between the super-hydrophobic wood and water is more than 150 DEG, and a rolling angle is less than 10 DEG, therefore, the super-hydrophobic wood has excellent hydrophobic property and better self-cleaning property. The method comprises the following steps: soaking wood in epoxy resin to ensure that one layer of epoxy resin is covered on the surface of the wood; then soaking in a silicon dioxide solution grafted with an amino group to ensure that silicon dioxide reacts with epoxy resin so that the silicon dioxide is adhered on the surface of the epoxy resin to form a micro-nano secondary structure; and finally, carrying out hydrophobic modification on the micro-nano secondary structure on the surface of the wood, therefore the super-hydrophobic wood is prepared. The method is used for improving the mechanical stability of the super-hydrophobic wood.

The invention relates to the field of preparation of superhydrophobic coatings, in particular to a preparation method of a persistent icing-resistant superhydrophobic coating. The preparation method comprises the following steps: firstly, carrying out cleaning and sand-blasting roughen treatment on the surface of a substrate; secondly, blending epoxy resin, a curing agent and a first solvent to obtain an epoxy resin solution; thirdly, dispersing submicron particles and nanoparticles into a second solvent, and then adding a silane coupling agent to obtain particle composite suspension; fourthly, spraying the epoxy resin solution obtained in the second step on the surface of the substrate treated in the first step, and partially curing epoxy resin adhesive; fifthly, spraying the particle composite suspension obtained in the third step on the surface of the substrate obtained in the fourth step and completely curing; sixthly, obtaining the persistent icing-resistant superhydrophobic coating. The persistent icing-resistant superhydrophobic coating disclosed by the invention has the beneficial effects that the superhydrophobic coatings prepared on the surfaces of all the substrates have good durability and firmness and persistent icing-resistant property.

The invention discloses a method for preparing an abrasion-resistant super-hydrophobic ceramic coating through a thermal spraying technology and a product. The method includes the following steps that (1) a substrate is subjected to surface roughening treatment; (2) a micro-patterned ceramic coating is prepared on the surface of the substrate through a plasma spraying technology; and (3) a low surface energy substance layer is sprayed to the obtained ceramic coating through a liquid material flame spraying technology, and the super-hydrophobic abrasion-resistant coating can be obtained. The material obtained through the preparing method has both the advantages of abrasion resistance and super-hydrophobic property, the tribological property of the super-hydrophobic coating is greatly improved, the static contact angle of the obtained coating can reach 150-180 degrees, and the rolling angle of the coating is smaller than 5 degrees. The method can prepare the abrasion-resistant super-hydrophobic coating on the basis of the surfaces of different substrates and is wide in the application range.

Multifunctional dustproof self-cleaning wall paint relates to wall paint and solves the problems of high cost, complex preparation method and no sterilizing and self-cleaning functions in traditional dustproof wall paint. The multifunctional dustproof self-cleaning wall paint is prepared from deionized water, inorganic pigment filler, resin emulsion, a hydrophobic additive with low surface tension, a functional nano material, a thickening agent, a pH regulator, a defoaming agent, a dispersing agent, a film coalescing aid and an antifreezing agent. The multifunctional dustproof wall paint disclosed by the invention is simple and convenient in preparation method, low in cost and suitable for various substrates, can be directly used for coating outer walls of various buildings on large scale and has excellent self-cleaning property for outer walls attached to the buildings and the outsides of various building facilities. In addition, the multifunctional dustproof wall paint has excellent outdoor ageing resistance and has a contact angle for water of more than or equal to 120DEG C, artificial acceleration ageing resistant time of more than or equal to 1000 hours, the decomposition capacity for oil stain of over 98 percent and killing performance for mould and Eschera coli of over 99 percent.

According to a self-cleaning control method of cleaning equipment, the cleaning equipment and a storage medium provided by the embodiment of the invention, the cleaning equipment is provided with at least one self-cleaning object, and the control method comprises the steps that: a current self-cleaning mode of the cleaning equipment is determined according to preset conditions; and the cleaning equipment is controlled to clean the self-cleaning object according to the determined current self-cleaning mode. According to the technical scheme of the embodiment of the invention, different self-cleaning modes can be selected according to different dirt conditions of the cleaning equipment, and the selection flexibility of the self-cleaning modes of the cleaning equipment is improved.

Substrates, in particular a substrate of glass, ceramic, plastic and metal and glazed or enamelled substrates, with a self-cleaning surface comprise an at least partly superficially hydrophobic structured (elevations and depressions) coating located on the substrate. Substrates according to the invention comprise particles with an average diameter of less than 100 nm, in particular 5 to less than 50 nm, for formation of the structure of the coating. Compositions according to the invention which are employed for the production of the structured coating of substrates according to the invention comprise, in addition to the structure-forming particles, a layer-forming material in a weight ratio of 100:1 to 1:2, in particular 20:1 to 1:1. In addition to having good self-cleaning properties, the coating is distinguished by its transparency. The use of the substrates is aimed in particular at the most diverse glass articles.

The invention provides a wall-mounted air conditioner and a self-cleaning control method thereof. The self-cleaning control method is characterized in that according to the structure characteristic ofthe air conditioner with two cross-flow fans, in the self-cleaning refrigerating process, a left air area and a right air area are frosted separately, that is, the first cross-flow fan is started firstly, and a heat exchanger corresponding to the second cross-flow fan is frosted firstly; and then the first cross-flow fan is turned off, the second cross-flow fan is turned on, and at the moment, aheat exchanger corresponding to the first cross-flow fan is frosted then. In the self-cleaning process of the method, at most one air outlet discharges air, so that the cold amount output by an indoorunit in the refrigerating process is reduced, a user is prevented from feeling cold, and the use experience of the user is improved.

The invention relates to a visible-light-driven photocatalyst self-cleaning antibacterial fabric, and preparation and application thereof. A composite catalysis particle membrane composed of TiO2, C3N4 and Cu2O is formed on the surface of a fabric. The visible-light-driven photocatalyst self-cleaning antibacterial fabric is prepared through the following steps: under the condition of room temperature, mixing TiO2, a nitrogen-containing compound and distilled water and then successively subjecting the obtained mixture to ultrasonic concussion, drying, grinding and calcining so as to obtain a substance A; adding the substance A into a coating agent, carrying out uniform dispersion, then directly coating the surface of the fabric with the coating agent and carrying out drying; and dipping the fabric in mixed liquor at room temperature, adjusting a pH value, carrying out dipping again, adding a glucose solution at 70 to 90 DEG C, carrying out treatment for 30 to 60 min, taking the fabric out and carrying out air drying at room temperature. According to the invention, through compounding and mixing of catalysts with photocatalysis performance at different wavelengths, a visible-light-driven photocatalyst with a wide catalysis wavelength scope and high catalysis efficiency is prepared.

The invention discloses a method for preparing an inorganic particle/epoxy resin super hydrophobic film. The method is characterized by comprising the following steps: (1) preparing amination nano silica and nano titanium dioxide particle; (2) preparing coating sol; (3) coating the sol on a substrate material; (4) performing post-treatment on substrate material, and finally preparing the inorganic particle/epoxy resin super hydrophobic film. The method is simple in process and good in repeatability, and the prepared coating has excellent super hydrophobicity and self-cleaning property and is suitable for industrial production of super hydrophobic paint.

The invention belongs to the functional material field, relates to a magnetic bacterial cellulose membrane with lyophobic performance and its preparation method; especially relates to a magnetic bacterial cellulose membrane with 130-160 DEG of apparent contact angle and lyophobic performance; concretely relates to a magnetic bacterial cellulose membrane with lyophobic performance and the surface roughness of the bacterial cellulose membrane microfiber increased by the ferroferric oxide nano particles and its preparation method. The method comprises the following steps: attaching the ferroferric oxide nano particles to the bacterial cellulose membrane through an in-situ composite method; then generating a lyophobic monolayer membrane through a lyophobic reagent by a self-assembly technology to reach the lyophobic effect. Therefore, the bacterial cellulose membrane with lyophobic performance and permanent magnetism can be prepared by the method.

The invention relates to a production method of a superhydrophobic antifog glass and belongs to the technical field of materials. The superhydrophobic antifog glass is produced with hydrophobic nano silica particles; the surface of a glass material is coated with a layer of hydrophobic nano silica particles, so that surface wet state of the glass material is improved, small waterdrops formed of condensed vapor slip off under their gravity action, the surface pollutants are easily brought away by the waterdrops, and good self-cleaning effect is achieved. Trimethoxy(1H,1H,2H,2H-heptadecafluorodecyl)silane and 3-aminopropyltriethoxysilane are added herein to produce superhydrophobic antifog glass; since a superhydrophobic coating on the antifog glass contains F and Si atoms; F is an element of greatest electronegativity in the periodic table of elements, has very small atom radius and forms a very short F-Si bond having great bond energy; the surrounding of carbon chains of a fluorine atom polymer is in tight arrangement, so that the fluorine-bearing polymer has excellent weatherability, surface self-cleaning property, high temperature resistance, chemicals resistance and the like.

The invention provides a permeable film module and an anhydrous humidification device based on a graphene/nanometer high molecular composite material and an anhydrous humidification method using the device, solves such problems as high energy consumption, complex device and easy moulding and difficult cleaning of core parts in a traditional humidifier, can realize the humidification purposes of no need of additionally adding water sources and the like, simple structure, low energy consumption, novel principle, health and sterility, and finally realizes low-cost civil commercial humidification.

The invention relates to a method to prepare a new hydrophilic coating for outside wall containing nmself-crosslinking acrylic ester latices and nm inorganic powder. Its dispensation is:nm indoor crosslinking acrylic ester latex(5-40%), indoor crosslinking acrylic ester latex(20-50%),inorganic nm powder(0.1-20%),inorganic filler(10-50%),film-forming assistant(0.05-5.0%) and the other is water without ion. Its preparing method is:firstly use high speed dispersion and sand grinding method to prepare nm disperseion and filler color which are then mixed with nm self-crosslinking acrylic ester latex and general acrylic ester latex, add into assistant and stir them by media-low speed for 0.5-1.5h,filter and package. The coating has good stability and film-forming performance,strong adhesive force and resistance to pollution, outstanding thermo insulating property, as well as self-cleaning performance.

The invention discloses a preparation method for a carboxylated polystyrene-silicon dioxide composite super-hydrophobic coating. The method is characterized by comprising the steps of: (1) preparing a polystyrene seed microsphere; (2) preparing a carboxyl modified polystyrene microsphere; (3) preparing a silicon dioxide coated carboxylated polystyrene particle; (4) preparing a vinyl modified silicon dioxide coated carboxylated polystyrene particle; (5) preparing a coating sol; and (6) coating a film on a substrate, and taking film out after drying, thus obtaining the carboxylated polystyrene-silicon dioxide composite super-hydrophobic coating. The method provided by the invention has the characteristics of simple preparation process and good repeatability, and the prepared coating has good super-hydrophobicity and self-cleaning performance. Thus, the method is suitable for industrial production of super-hydrophobic coatings.

The invention discloses a dyeing and finishing process for linen and cotton blended fiber fabric. The dyeing and finishing process comprises preprocessing, pre-sizing, modified processing, dyeing, mordant removing, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Helicase, scouring enzyme and alpha-amylase are used for pretreatment, modification treatment is adopted before dyeing, the performance of linen and cotton blended fabric is modified fundamentally, and the dye-uptake rate is increased; the dyeing procedure does not require a large quantity of alkaline substances and inorganic salt, a leveling agent, substitutive alkali, a migration inhibitor and a dispersing agent are added, the dye uniformity is improved, environment pollution is avoided due to use of natural dye, and requirements for environmental protection are met; self-cleaning processing is added in the after finishing procedure, and the self-cleaning capacity, the crease-resistant performance, the washing resistance and the color fastness of the fabric are improved; crease-resistance finishing is added, and the crease-resistant performance of the fabric is improved; the whole process is environment-friendly and pollution-free.

The invention relates to a preparation method of a transparent super-hydrophobic zinc oxide coating on a glass substrate. The preparation method comprises the following steps of a, substrate pretreatment; b, zinc oxide solution preparation; c, zinc oxide coating preparation; and d, zinc oxide coating surface modification. Compared with the prior art, the preparation method has the beneficial effects of simple equipment process, low cost and mild reaction condition and is beneficial to large-scale industrial production. The transparent super-hydrophobic zinc oxide coating prepared by using the method has excellent hydrophobicity and transparency; the contact angle is larger than 160 degrees, the rolling angle is smaller than 8 degrees, and water drops can freely roll on the coating, so that the transparent super-hydrophobic zinc oxide coating has relatively good self-cleaning performance; and the light transmittance is approach to 90% which is close to that of blank glass, so that the transparent super-hydrophobic zinc oxide coating has favorable visible light transmittance. A surface modifier used in the preparation method is an alkyl silane coupling agent instead of a fluorinated compound, so that the cost is low, the environment pollution is relatively low, and the modified coating is relatively stable.

The invention relates to a coating with performances of self-cleaning, heavy corrosion protection and super weather resistance. The coating with performances of self-cleaning, heavy corrosion protection and super weather resistance comprises an epoxy resin particle system which consists of epoxy resin and curing agent A, and a fluorocarbon resin particle system which comprises fluorocarbon resin, curing agent B and TiO2 nanometer particles. The ratio (weight in parts) of the epoxy resin particle system to the fluorocarbon resin particle system is 4-1:1-4. The self-cleaning powder coating with performances of heavy corrosion protection and super weather resistance disclosed by the invention has phase separation during the curing process to form a fluorocarbon face and an epoxy bottom layer, TiO2 nanometer particles only exist in the fluorocarbon face, and photocatalysis decomposition is prevented under the action of TiO2 due to the high chemical stability of fluorocarbon, so that the powder coating has good performances of self-cleaning, heavy corrosion protection and super weather resistance.

The invention discloses a functional gradient composite structure wear-resistant transparent super-hydrophobic coating and a preparation method thereof. Specifically, the method consists of: firstly coating a substrate with a polyurethane modified reinforced bonding layer, then conducting coating of a polyurethane and super-hydrophobic compound transition layer to obtain a polyurethane/polyurethane and silicon dioxide transition layer compound coating, and finally performing coating of a micro-nano super-hydrophobic layer, thus forming a polyurethane/polyurethane-silicon dioxide/silicon dioxide functional gradient composite structure wear-resistant transparent super-hydrophobic coating. The preparation method provided by the invention has the characteristics of simple process, easy operation, normal pressure and low cost, the prepared functional gradient composite structure wear-resistant transparent super-hydrophobic coating can be used for water and fouling prevention on ship surface coatings, automotive glass surfaces, mobile phone screen surfaces and other transparent materials.

The invention relates to a method for producing a self-cleaning TiO2 photochemical catalysis coating, blowing to photochemical catalysis material chemical manufacturing technical field. Use TiCl4 as the row material,add into muriatic acid solution with their ratio being 1.3g/cm2 and Ti cintent bing 2.86mol/L use Ti in each liter of TiO4 muriatic acid solution as standard to express its gram molecule density;drop it into the four-moth glass container with back floing cooling pipe and agitating blade with 500ml water without ion in it,increase the temperature while heat it,with the temperature being 55-95deg.C and the stirring speed being 200 rmp;when approaches the boiling point,open the back flowing cooling water and keep the temperature for 1h,generating ice-cream sol which is the diluted by alcohol water solution to acquire sol containing particle content (2%), add into organic silicon sticker, by stirring averagely the product is made.

The invention relates to a preparation method of a transparent thermal insulation self-cleaning coating. The method comprises the following steps: (1) preparation of a photocatalyst: evenly mixing tetrabutyl titanate, ethyl orthosilicate and anhydrous ethanol, adding the mixture into a mixed solution containing inorganic acid, water and acetylacetone, stirring at 40-80 DEG C for 5-15 h, and cooling; (2) preparation of a thermal insulation powder dispersion liquid: adding a thermal insulation powder into a solvent A added with a dispersant and a defoamer to form a mixed solution, dispersing the mixed solution by stirring at high speed for 0.5-2 h, and then dispersing the mixed solution with ultrasonic for 15-40 min; and (3) preparation of a transparent thermal insulation self-cleaning coating: evenly mixing the photocatalyst, the thermal insulation powder dispersion liquid, a silicon resin, a leveling agent and a solvent B at room temperature. The preparation method has simple process, and is convenient for construction; the method provided by the invention can prepare a uniform and stable transparent thermal insulation self-cleaning coating, which has good thermal insulation performance, excellent cleaning performance, and good use effect.

The invention provides a wood waterproof agent adopting a silicone emulsion, a method for preparing the wood waterproof agent, and a method for preparing waterproof wood by utilizing the wood waterproof agent. The method for preparing the wood waterproof agent comprises the following steps: first, preparing a silicone oil emulsion primary liquid which contains hydroxyl silicone oil, hydrogen-containing silicone oil, a surfactant, nano-silicon dioxide, micron-silicon dioxide and water; then, diluting the silicone oil emulsion primary liquid into silicone oil emulsions of different concentrations; and finally, adding a catalyst for uniform dissolution and mixing. When the silicone oil emulsion wood waterproof agent provided by the invention is utilized for vacuum-pressurization pretreatment of wood, the waterproof performance and size stability of the wood can be improved, the hygroscopicity of the wood can be reduced, and the contact angle between the treated wood surface and water is larger than 140-150.

The invention relates to the technical field of air conditioning, in particular to a multi-split air conditioner and a self-cleaning control method thereof. Specifically, the multi-split air conditioner comprises an outdoor unit and an indoor unit set, and the indoor unit set comprises a first indoor unit and at least one second indoor unit. The self-cleaning control method of the multi-split airconditioner comprises the steps that under the condition that all indoor units of the air conditioner are in the refrigeration condition, the first indoor unit executes the self-cleaning mode; and anelectronic expansion valve corresponding to the second indoor unit is closed. According to the control method, the electronic expansion valve of the second indoor unit is closed, it is ensured that sufficient refrigerants circulate in a pipeline system of the first indoor unit, therefore, frosting of the first indoor unit is more completely filled, stripping and flushing effect on the dust and dirt is better, and the self-cleaning effect is improved.