70results about How to "Improve oleophobic properties" patented technology

The invention relates to a self-cleaning fluorosilicone-modified acrylic acid cathode electrophoresis paint and a preparation method thereof. The paint is prepared from a fluorosilicone-modified acrylic acid emulsion and a nano silicon dioxide modified color paste in a ratio of 9:1, wherein the fluorosilicone-modified acrylic acid emulsion is prepared by stirring a semiclosed aliphatic isocyanate-modified fluorosilicone-containing cationic acrylic resin, a neutralizer and deionized water at high speed; and the nano titanium dioxide powder modified color paste is prepared by grinding a semiclosed aliphatic isocyanate-modified fluorosilicone-containing cationic acrylic resin, a surfactant and deionized water at high speed in a grinding tank. The paint provided by the invention has the advantages of high self stability and high tank liquor stability; and after the electrophoretic coating, the coating has the advantages of flat appearance, favorable mechanical properties, excellent acid and alkali resistance, high hydrophobicity and favorable pollution resistance (at most 10%), and the contact angle between the coating film surface and water can reach 130 degrees.

The invention discloses a bottom surface-integrated wear-resistant fluorosilicone-based super-amphiphobic coating, and a preparation method and application thereof. The preparation method comprises the following steps: 1) performing synergistic modification treatment on two or more nanoparticles to obtain modified blended particles; 2) adding the blended modified particles into a dispersing solvent, performing ultrasonic dispersion for 1 to 2 hours and then mechanically stirring; 3) adding a certain amount of tert-butyl acetate into fluoro-siloxane resin and performing shearing dispersion to obtain substrate material emulsion; 4) mixing the blended modified particle turbid liquid in the step 2 and the substrate material emulsion in the step 3, adding a coupling agent, heating, stirring anddispersing, and performing dispersion by a high-speed shearing dispersing machine to obtain super-amphiphobic coating; and 5) stirring the super-amphiphobic coating uniformly, spray-coating the surface of an object with the super-amphiphobic coating and drying at room temperature for 10 to 30 minutes to successfully prepare the wear-resistant integrated super-amphiphobic coating. The wear-resistant super-amphiphobic organic-inorganic hybrid coating is obtained by connecting a fluorine-silicon substrate and the blended modified particles through chemical grafting copolymerization reaction.

The invention discloses a hydrophilic-oleophobic material, and a preparation method and an application thereof. The hydrophilic-oleophobic material comprises a hydrophilic porous material used as a matrix, and the matrix is grafted with hydrophilic-oleophobic molecules. Hydrophilic groups contained in the hydrophilic porous material and polar groups contained in the hydrophilic-oleophobic molecules undergo a bonding reaction to make the matrix be grafted with the hydrophilic-oleophobic molecules. The hydrophilic-oleophobic material has hydrophilic and oleophobic properties in air, has underwater super oleophobic property, can effectively treat stable emulsified oil sewage, and has the advantages of self cleaning, pollution resistance and long life, so the hydrophilic-oleophobic material is a good oil-water separation material, and has wide application prospect in the field of oil-water separation and filtration treatment of organic sewage generated in the industry and life. The preparation method of the hydrophilic-oleophobic material has the advantages of simplicity, cheap and renewable raw materials, and commercial promotion facilitation.

The invention relates to a preparing method of heat preservation paint with waterproof and antifouling performance. The heat preservation paint comprises aggregate, a base material, auxiliary filler and an auxiliary and is characterized in that hollow glass microspheres serve as the aggregate, the base material is silicone-acrylic emulsion, and the heat preservation paint composition comprises, by weight, 16-18 parts of hollow glass microspheres and 21-27 parts of silicone-acrylic emulsion. As the silicone-acrylic emulsion is selected, while having excellent heat preservation performance, the heat preservation paint has good waterproof and antifouling performance, and particularly fluorine-containing silicone-acrylic emulsion is selected, so that the waterproof and antifouling performance of the heat preservation paint is more excellent.

The invention belongs to the field of self-cleaning organic/inorganic composite films, and particularly relates to an underwater self-cleaning superoleophobic mineralized fibrous film with a non-woven fabric structure and a preparation method of the underwater self-cleaning superoleophobic mineralized fibrous film. The underwater self-cleaning superoleophobic mineralized fibrous film with the non-woven fabric structure is produced by the following steps: a polymer fibrous film with the non-woven fabric structure and containing a mineralizing regulator is obtained by an electrostatic spinning method; the fiber surface of the polymer fibrous film is controllably mineralized by a biomineralization method so as to obtain the organic/inorganic composite underwater self-cleaning superoleophobic mineralized fibrous film with good stability. In air, the invasion of the film surface is hydrophilic; in water, the invasion of the surface is superoleophobic; and in water, the contact angle of the film surface to oil is more than 150 degrees.

The invention discloses a nanometer titania aerogel material for catalytically degrading antibiotics and a preparation method thereof and belongs to the technical field of water treatment. A matrix ofthe aerogel material is a titanium dioxide-halloysite-hydrophobic porous carboxymethylcellulose composite material, and nano silver and graphene are supported onto the matrix of the aerogel material.The aerogel material prepared in the invention is light in mass, high in strength, high in antibiotic adsorption capacity and excellent in lipophobicity, and is capable of realizing in-situ removal of antibiotics in aquaculture water.

The invention discloses an integrated wear-resistant superamphiphobic coating and a preparation method thereof. The modified silica (titanium dioxide) particles and a modified base material (such as polytetrafluoroethylene, polystyrene, ethylene propylene diene monomer and polyurethane) undergo a cross-linked polymerization reaction. Through chemical grafting copolymerization reaction connection, organic and inorganic materials have better compatibility. Through shear dispersion, micron- and nano-structure superamphiphobic micro-nano-spheres are obtained by copolymerization of nano-modified particles (functional modified particles such as silica and titanium dioxide particles) and micron-sized base materials (functional base materials such as polytetrafluoroethylene, polystyrene, ethylene propylene diene monomer and polyurethane). The preparation method greatly improves the adhesion between the coating and the base. The coating has strong durability.

The invention provides a polyacrylate UV adhesive. The polyacrylate UV adhesive is prepared from, by weight, 50-72 parts of polyacrylate, 10-15 parts of reactive diluents, 2-7 parts of photoinitiator, 1-2 parts of stabilizer, 2-4 parts of adhesive force enhancer, 1-2 parts of pigment, 2-3 parts of thixotropic agent, 1-2 parts of flatting agent, 1-3 parts of age resister, 5-8 parts of PTFE and 2-5 parts of chromic oxide. The invention further provides a preparation method of the polyacrylate UV adhesive. The polyacrylate UV adhesive has good wear resistance.

The invention discloses a polystyrene abrasion-resistant integrated ultra-hydrophobic coating and a preparation method thereof. Polystyrene is modified, nano-silica particles modified by a crosslinking agent (polytetrafluoroethylene), a modifying agent and KH792 are added into the modified polystyrene, and the materials are mixed to form a superamphiphobic coating having high hardness, good wear resistance, strong binding force and a micron polystyrene-nano-silica structure. The polystyrene in an emulsion state and silica in a gel state are block-crosslinked so that the nano-silica and micron polystyrene are re-constructed and thus coating wear resistance is significantly improved. Through the bonding reaction between polystyrene and silica, each monolayer of the micron polystyrene-nano-silica structure has a good binding force to other layers. Each structure has superamphiphobic performances, greatly improves coating wear resistance, can be integratedly prepared and subverts and breaks through polystyrene wear resistance in theory.

The invention relates to a preparation method of a novel super-hydrophilic oleophobic membrane, which comprises the following steps: directly dissolving cellulose by using N-methylmorpholine-N-oxide monohydrate (NMMO.H2O) as a solvent to prepare a coating solution, and coating the surface of a porous material with the coating solution. The preparation method comprises the following steps: oxidizing ortho-hydroxyl of cellulose into an aldehyde group by using an oxidizing agent, carrying out chemical crosslinking on the cellulose on the surface of a porous material by using a crosslinking agent to improve the stability of the cellulose, and further grafting a hydrophilic monomer on the surface of a cellulose membrane to prepare the super-hydrophilic oleophobic membrane. The preparation process is simple and environment-friendly, the oil-water separation efficiency is high, the anti-pollution capacity is high, and the good industrial application value is achieved.

The invention provides a preparation method of a graphene oxide-based porous photo-thermal material capable of efficiently generating solar steam. The preparation method comprises the following steps: S1, preparing graphene oxide by a hummers method; S2, preparing a directionally arranged graphene oxide-based porous photo-thermal material; and S3, preparing a hydrophilic and oleophobic graphene oxide-based porous photo-thermal material. According to the invention, directional freezing and simple carbonization are taken as main means, and a synthesis method of the graphene oxide-based porous photo-thermal material which can efficiently generate solar steam and has aligned channels and oleophobicity is introduced; the invention further provides the application in seawater desalination and (oil-containing or dye-containing) wastewater purification treatment; and the graphene oxide-based porous photo-thermal material disclosed by the invention has relatively high solar energy conversion efficiency and excellent salt resistance and pollution resistance, and has a certain practical application value in the aspects of seawater desalination and (oil-containing and dye-containing) wastewater purification treatment in the future.

The invention discloses a preparation method of a nano silicon dioxide oleophobic reinforced composite chitosan sizing agent. The preparation method comprises the following steps: firstly performing cationic modification for chitosan by virtue of glycidyl trimethyl ammonium chloride, so that the surface has cations, not only can a compounding effect with cationic starch be improved, but also the action on fibers and filler with the surface having negative charges is higher under the synergistic effect, and the retention assistant effect is excellent; and by gluing paper, the surface energy ofthe paper can be reduced, and a given electrostatic adsorption effect for oil drops can be realized; and the added nano silicon dioxide can be reasonably combined with chitosan, when the surface of the paper contacts oily ingredients, a layer of oil drop repelling phase can be formed on the surface of a micro-nano coarse structure, an effect for supporting the oil drops and preventing the oil drops from penetrating into the surface micro structure of solids can be realized, and the barrier performance for the oil can be further improved.

The invention relates to an oleophobic modification method of polybutadiene membrane. A fluorinating agent is adopted to conduct immersion treatment on silicon dioxide nano-particles, then the fluorinated silicon dioxide nano-particles are supported on polybutadiene fiber through a suction filtration method to obtain a porous polybutadiene membrane material having hydrophobic and oleophobic properties. The oleophobic property of the polybutadiene membrane is improved, and water and oil contact angles of the modified polybutadiene membrane are respectively 143 degrees and 120 degrees. The modified polybutadiene membrane shows stable air flow and also shows good suction filtration property in an oil-containing system, and the retention rate of oily smoke reaches 99.5% or above.

The invention discloses a modified nanoparticle suspension, as well as a preparation method and application thereof, belonging to the field of new chemical materials. The preparation method comprisesthe following steps: uniformly stirring and dispersing aqueous silica sol, tetraethyl orthosilicate and a modifier under an alkaline condition for reaction, and concentrating a product to 10 times byadopting a rotary evaporation concentration technology; carrying out freeze drying on a concentrated solution to obtain nano powder; dispersing the prepared nano powder in isomeric hexadecane; and carrying out dispersing by using an ultrasonic cell crusher to obtain a suspension containing modified nanoparticles. The solid content of the suspension is 1-15%, a solvent is isomeric hexadecane, and the nanoparticles are silica particles. The method uses simple equipment and process, is simple to operate and is low in cost; the prepared powder is nano-scale, is not easy to agglomerate, can be stably dispersed in isomeric hexadecane for a long time, can withstand damages at a high temperature and a low temperature, and can be applied to preparation of a separation membrane with adjustable wettability; and as a novel hollow fiber membrane pore-forming agent, the powder has great application prospects in large-scale production and solving problems such as separation membrane pollution.

The invention provides an environment-friendly waterproof paper and a preparation method thereof. The environment-friendly waterproof paper is prepared from straw, withered tree leaves, bamboo, modified acrylic resin, magnesium oxide particles, pectin, polyester fibers, starch, dilute sulfuric acid, glycerin, lignocellulose, a surface active agent, an additive and a polyvinyl alcohol. The preparedenvironment-friendly waterproof paper has good writing performance and printability, damage of moisture on the paper can be effectively prevented, the hydrophobicity of the paper is ensured, and at the same time, the difficulty and effect of writing and printing of the paper are not influenced; besides, multiple plant components are added into the paper, the paper can be rapidly decomposed by organisms and accordingly is more environmentally friendly and safer, and actual environment protection is achieved.

The invention provides a self-cleaning coating material for castings. The self-cleaning coating material is prepared from the following raw materials by weight: 40-60 parts of modified acrylic resin,10-18 parts of a polytetrafluoroethylene emulsion, 4-9 parts of trimethylolpropane oleate, 3-5 parts of nano titanium dioxide, 2-4 parts of nano silicon carbide, 2.5-5 parts of nano zinc oxide, 2-5 parts of nano cerium oxide, 1-3 parts of gamma-aminopropyl triethoxysilane, 1.5-4 parts of 2-hydroxy-4-methoxybenzophenone, 1-3 parts of a mixed antioxidant, 0.5-2 parts of 3-(2, 2, 6, 6-tetramethylpiperidine-4-amino)dodecyl propionate, 1-2.5 of tri(2-hydroxyethyl)isocyanurate, 0.8-2.5 parts of an antibacterial mould inhibitor, 0.3-1 part of a leveling agent EFKA-3772, and 10-20 parts of a diluent.The coating material has the advantages of high mechanical strength, good self-cleanliness and strong ageing resistance, thus having wide application prospects.

The invention discloses a specific heat-radiating waterproof brushing coating for an LED lamp. The brushing coating is prepared from the following raw materials: epoxy resin, fluorocarbon resin, acrylicperfluorodecyl ether, 4,4'-diaminodiphenylmethane, sebacic dihydrazide, 2-heptadecylimidazole, 2,4,6-tris(dimethylaminomethyl)phenol, 1H,1H,2H,2H-perfluorodecanethiol, silicon carbide, carbon nanospheres, cordierite powder, magnesium carbonate, zinc powder, modified montmorillonite, mica powder, calcium carbonate, hexamethyl-disilazane, perfluorooctyltriethoxysilane, a flatting agent and gelatin. The specific heat-radiating waterproof brushing coating has good heat radiating and waterproof performance and excellent high temperature resistance, and can be used for remarkably prolonging the service life of an LED lamp in the field of LED lamps.

The invention relates to a SiO2-coated ZnO super-hydrophobic coating material with a micro-nano coarse structure, which comprises an inorganic matrix material formed by zinc oxide and silicon dioxide, and is prepared by carrying out surface hydrophobic modification on the inorganic matrix material; zinc oxide and silicon dioxide are mixed to prepare a composite solution, and then a coating material composite stock solution is obtained through a cross-linking reaction and surface modification treatment; and the obtained coating material composite stock solution can be used for cultural relic protection and indoor and outdoor building surface protection. When the coating material is used, a to-be-coated base material needs to be subjected to cleaning pretreatment firstly, and then spraying is conducted. The coating material disclosed by the invention has super-hydrophobicity, high oleophobicity and high stability; and the preparation method is simple, low in cost and environment-friendly.

A positive photosensitive resin composition that forms an image for a liquid crystal display device and an organic EL display device, for example. The resin is made of a cured film that is highly water repellent and highly oleophobic on the surface. The resin has insulating properties, retains an excellent image and causes no reflow, for example, when being cured to form a film having excellent reworkability. A positive photosensitive resin composition comprising component (A), component (B), component (C) and component (D); Component (A) is an acrylic polymer containing an acid dissociable group, an aliphatic hydroxy group, and an N-substituted maleimide group; Component (B) is an acrylic polymer containing an acid dissociable group and a blocked isocyanate group; Component (C) is an acrylic polymer containing an acid dissociable group, an aliphatic hydroxy group, a C_3-10 fluoroalkyl group, and a silyl ether group, and Component (D) is a photoacid generator.

The invention discloses a weather-resistant water-based sand-textured paint and a preparation method thereof. The weather-resistant water-based sand-textured paint is composed of a component A and a component B. When the weather-resistant water-based sand-textured paint is used, the component A and the component B are mixed according to the mass ratio of (4-8):1, and the component A is composed ofwater-based hydroxyl fluorocarbon emulsion, carbon black, sand-textured powder, water-based auxiliary agents and deionized water; the component B comprises the components in parts by mass: a hydrophilic isocyanate curing agent, an anhydrous diluent and a dehydrating agent. The product water-based sand-textured paint is convenient to construct, capable of being self-dried at normal temperature, low in VOC content and more environmentally friendly; the paint has excellent adhesive force on the surface of an aluminum profile, a paint film is resistant to boiling, the weather resistance is outstanding, and the self-cleaning effect is remarkable.

The invention provides a preparation method of a segmented polymer FPEG-CO-CA modified CA filter membrane. The preparation method includes: adopting segmented polymer FPEG-CO-CA as an additive to modify CA; allowing membrane formation to obtain the filter membrane, wherein FPEG-CO-CA segmented polymer obtained through simple free radical polymerization and normal-temperature esterification reaction is used as the additive for modifying a CA membrane. Compared with the prior art for preparing the segmented polymer additive, the method has the advantages of few needed operation steps, simplicityand convenience in operation, low in cost and easiness for industrial production; the segmented polymer FPEG-CO-CA and CA are blended to prepare a modified filter membrane, and the filter membrane can be prepared by adopting a conventional immersion precipitation phase conversion process. The preparation process is simple, low in requirement on modifying conditions and easy in control, and the membrane is adjustable and uniform in structure and has lasting stability. The novel segmented polymer modified CA separation membrane is simple in operation and wider in application range.

The invention discloses a fire extinguishing agent. The fire extinguishing agent is characterized by comprising raw materials including, by weight part, 10 to 20 parts of tetrafluoroethane, 5 to 10 parts of aluminum sulfate, 1 to 5 parts of zinc carbonate, 1 to 5 parts of sodium bicarbonate, 50 to 80 parts of ammonium dihydrogen phosphate, 30 to 100 parts of ammonium bicarbonate, 30 to 40 parts oflyophobic white carbon black, 5 to 10 parts of azodicarbonamide and 5 to 8 parts of vinyl alcohol. The fire extinguishing agent is long in expiration date, heat resistance, electric insulation, hydrophobicity, lipophobicity, and other properties are improved, and the fire extinguishing property is high.