33results about How to "Good hydrophobic effect" patented technology

The invention discloses high weather resistance environment-friendly cable fire-refractory coating and a preparation process thereof, belonging to the technical field of coating. The process adopts a base material, namely acrylic ester elastic emulsion, as a main film-forming substance, dopes high polymerization degree ammonium polyphosphate into the base material, has good film-forming effect and water resistance. The method particularly selects Number 70 chlorcosane and diantimony trioxide as synergistic flame-retardant to greatly improve the fire retardant performance, has low proportion of pigment and the base material, optimizes compatibility of a fire retardant system; the coating has weather resistance and has oil resistance for selecting fluorocarbon surfactant. The process improves water resistance and weather resistance of the coating, and adopts titanate coupling agent to improve the combining firmness of the pigment, the base material and cable base materials, and the weather resistance of the coating is further improved. Green and environment-friendly water is used as solvent to reduce cost, and as the solvent is removed in preparation or construction, the coating does not pollute the environment and not hurt the health of operators.

The invention relates to a preparation method of a super-hydrophobic non-iridescence structural color film, and belongs to the technical field of photonic crystal film preparation. The preparation method comprises the following steps of firstly, carrying out hydrophobic treatment on colloidal microspheres by using solvent with low surface energy; then, mixing black nano particles and a hydrophobiccolloidal microsphere emulsion according to a certain ratio, and uniformly dispersing the mixture in ethanol to form an emulsion; then, placing the emulsion on a base bottom by drip coating, spin coating, dip coating, lifting, spraying and ink jet printing; and carrying out drying at room temperature to form a non-iridescence structural color material with high saturation, high brightness and hydrophobic property. According to the method, the color saturation of the non-iridescence structural color material is remarkably improved by virtue of the absorption effect of the black nano particleson non-coherent scattered light caused by an unordered optical structure; through the hydrophobic treatment, a non-iridescence structure color film has a good hydrophobic characteristic, and the contact angle is 150 degrees or above; and the method has practical application in the fields of decoration, anti-counterfeiting, cosmetic packaging, artware, billboard and the like.

The invention discloses a compound heat-insulating plate which comprises the following raw materials by weight parts: 55 to 65 parts of white cement 42.5R, 0.3 to 1 part of latex powder DA-1420, 5 to 10 parts of hydroxypropyl methyl cellulose 40US, 20 to 30 parts of ash calcium powder, 1.5 to 2.5 parts of wood fibers, 1.5 to 2.5 parts of bentonite, 2 to 2.5 parts of polyphenyl grains and 25 to 40parts of water. The polystyrene foam grains with low coefficient of heat conductivity are wrapped and stuck by non-flammable inorganic materials and then are processed according to a certain process,thereby forming the compound heat-insulating plate. The compound heat-insulating plate is A-level anti-flaming and the implementing technology is simple.

The invention discloses a production method of hydrophobic mineral wool. The production method is characterized by comprising the following steps of 1, raw material blending: mixing graystone, fly ash, gabbro, iron ore, bauxite and wollastonite and melting the mixture to obtain a liquid mixture, 2, hydrophobic liquid preparation: mixing 0.3-0.5wt% of SILRES BS 1042, 5-8wt% of methyl cellulose, 1-2wt% of a polyacrylamide solution and the balance phenolic resin to obtain a uniform mixture, and 3, fiber preparation: continuously feeding the liquid mixture into a centrifugal roll in a high-speed rotation state so that the liquid mixture is coagulated to form fibers under the action of centrifugal throwing and air cooling and then the fibers are collected and molded under the action of blower air-blasting, and spraying the hydrophobic liquid to mineral wool fibers. The hydrophobic mineral wool comprises, by weight, 10-20% of graystone, 14-30% of fly ash, 2.8-6.8% of gabbro, 1.2-6.2% of iron ore, 20-35% of bauxite and 25-45% of wollastonite.

The present invention discloses a transparent sound-absorption film surface hydrophobic self-cleaning coating preparation method, wherein nanometer silica is adopted as base particles, other polymer additives are added to improve a hydrophobic effect, and a mixed slurry is sprayed onto a porous polycarbonate sound-absorption surface. The preparation method comprises the following steps: carrying out an ultrasonic cleaning treatment on a porous polycarbonate sound-absorption film, adopting silicon tetraacetate and KH-570 as raw materials to prepare modified nanometer silica particles, mixing a certain amount of polyvinylidene difluoride, N,N-dimethylformamide and butanone according to a certain ratio to prepare a polyvinylidene difluoride mixing solution, mixing a certain amount of the nanometer silica particles and the polyvinylidene difluoride mixing solution, spraying the obtained mixed solution on the porous sound-absorption surface, and drying to form the coating. The transparent sound-absorption film surface hydrophobic self-cleaning coating has a high water contact angle, has high light transmittance, and can not block a micro-pore structure of the sound-absorption surface.

The invention relates to a method for hydrophobic modification of wood-base photochromic composite surfaces, in particular to a hydrophobic wood-base photochromic composite preparation method which solves the problem of poor anti-aging performance and hydrophobicity of surfaces of wood-base photochromic composites prepared by existing methods. The preparation method includes: coating photochromic film forming liquid on the surface of a preprocessed wood substrate, drying, and using isocyanate acetone solution and polyhydric alcohol acetone solution for surface hydrophobic modification of the wood-base photochromic composite to obtain the hydrophobic wood-base photochromic composite. A contact angle of a hydrophobic face of the prepared wood-base photochromic composite is up to 136 degrees maximally while photochromic performance and ageing resistance of the wood-base photochromic composite are unaffected, fine hydrophobic efficacy is achieved, and duration of the photochromic function is prolonged. The method is applicable to production of wood-base photochromic composites and photochromic composite films.

The invention discloses a light-cured resin material for 3D printing. The light-cured resin material for 3D printing comprises the following ingredients (by weight): 10-60% of epoxy resin, 0-30% of an acrylate monomer or acrylate prepolymer, 2-10% of an impact modifier, 5-40% of an oxetane reactive diluents, 5-20% of an initiator and 1-10% of a hydrophobic modifier. By the adoption of the light-cured resin material, water absorption after curing of the material can be reduced; problems such as volume expansion, strength reduction, modulus reduction, etc. of the material due to plasticizing effect of water molecules are effectively avoided; and use quality of workpieces is improved and service life of workpieces is prolonged.

The invention relates to method for preparing an electrode for a fuel cell. The method includes the steps: 1) providing an electrode substrate; 2) forming a microporous layer on the electrode substrate; 3) forming a nano carbon layer on the surface of the microporous layer; and 4) forming a catalyst layer on the surface of the nano carbon layer. The microporous layer is formed by using a specific method. The fuel cell prepared by the method disclosed by the invention has extremely high electrochemical efficiency and output power.

The invention discloses sand with exterior wall texture and lotus leaf effect as well as a production method thereof. The sand with exterior wall texture is prepared by the following raw materials in percentage by mass: 10.0-20.0% of water, 0.2-0.3% of hydroxyethyl cellulose, 0.2-0.3% of an antifoaming agent, 0.1-0.2% of a pH conditioning agent, 0.1-0.3% of a wetting agent, 0.3-0.6% of a dispersant, 1.0-1.5% of glycol, 0.9-1.2% of a film forming auxiliary agent, 2.0-10.0% of titanium dioxide, 5.0-15.0% of coarse whiting, 15.0-20.0% of an acrylic acid emulsion, 5.0-10.0% of a wax emulsion, 0.2-1.0% of a bactericide, and 50.0-70.0% of quartz sand. The production process is divided into two stages including production of base materials and paint mixing. The sand has an automatically cleaning function, which is similar to lotus leaf effect, other performances of the sand meet the national standard JG / T24-2000 requirement, comprising: storage stability, artificial aging resistance, cracking resistance at initial stage, shock resistance, water resistance, alkali resistance, etc.

The invention discloses a dry seamless undergarment and a production process thereof. The dry seamless undergarment is in a seamless structure formed by weaving covered yarns of polypropylene fiber or spandex covered polypropylene fiber and breathable polyester fiber by a full-computerized electronic underwear jacquard machine. Base yarns are all covered yarns of polypropylene fiber or spandex covered polypropylene fiber. The outer layer of the undergarment is all made of the breathable polyester fiber. The dry seamless undergarment can keep a human body dry anytime.

The invention provides a water-soluble system structure based on isocyanate-yl alkyl alkoxy silane and a preparation method thereof. A proper hydrophilic group is led into a molecular chain of the isocyanate-yl alkylalkoxy silane to achieve the purpose of water solubility, and the water-soluble system has the following main structure, wherein Y represents a hydrophilic chain segment, such as a polyethenoxy ether chain segment, a polyoxypropylene ether chain segment, a poly (oxyethylene-oxypropylene) copolyether ester chain segment and a chain segment containing a sulfonic group; R3 represents a bivalent alkyl group; R4 represents H or an alkyl group; and M is K, Na, H, NH4+ and an organic amino group. The water-soluble system contains is solvent free, is environment-friendly and innoxious, can be used for metal surface processing or used as an additive, and can be applied to a resin or paint system.

The invention discloses a high-wear resistance inkjet ink composition. The inkjet ink composition is prepared from 1-20 wt% of a pigment, 0.2-10 wt% of a dispersant, 5-30 wt% of a polymer, 5-30 wt% of a humectant, 0.01-1.5 wt% of a surfactant, 0.1-1.5 wt% of a pH adjuster, 0.05-0.5 wt% of a fungicide, and the balance of deionized water. A preparation method of the inkjet ink composition comprises the following steps: 1) mixing and grinding the pigment, the dispersant, the humectant, the surfactant, the pH adjuster, the bactericide and the deionized water according to above weight percentages until the particle size D90 of the obtained mixture is not more than 200 nm; and 2) adding the polymer to the ground mixture obtained in step 1), stirring and uniformly mixing the mixture and the polymer, and filtering the newly obtained mixture to obtain the inkjet ink composition. The inkjet ink composition has the advantages of simple preparation method, high weather resistance, excellent storage stability and excellent printing stability.

The invention belongs to the technical field of aerogel preparation, and discloses a cheap and efficient preparation method of a hydrophobic silica aerogel. A silica gel is first prepared by using a sol-gel method, and then placed in a modified solution for modification treatment for 8-16 h, then solvent replacement is carried out by using anhydrous ethanol, and finally drying treatment is carriedout to obtain the hydrophobic silica aerogel, wherein the modified solution is a mixed solution composed of anhydrous ethanol, hydroxyl silicone oil, and an alkaline catalyst according to a molar ratio of 1:(0.02-0.1):(0.0005-0.0008), and the alkaline catalyst is triethylenetetramine, diethylenetriamine, ethylenediamine, tetraethylenepentamine or sodium hydroxide. The method uses the low molecular weight hydroxyl silicone oil as a hydrophobic agent to prepare the silica aerogel, the production cost of the aerogel is reduced, and a production cycle is shortened. The hydrophobic aerogel prepared by the method has the advantages of simple process, low cost, and relatively good hydrophobic effects.

The invention relates to a surface hydrophobic agent, in particular to a coating with a long-acting durable super-hydrophobic function. An effective component of the coating with the long-acting durable super-hydrophobic function is a multi-functional group fluorine-containing furan derivative. The structure of the coating is as shown in the specification. The multi-functional group fluorine-containing furan derivative, a pH (potential of hydrogen) value buffer regulator and an auxiliary are mixed and dissolved in solvents according to an appropriate proportion to obtain the stable hydrophobiccoating. The contact angle of the coating can reach 150 degrees or more, and the coating is good in hydrophobic effect, strong in adhesive force and particularly suitable for automotive glass and automotive paint and has super-hydrophobic performance.

The invention discloses a positive electrode lead plaster of a lead acid storage battery. The positive electrode lead plaster comprises ionic liquid, wherein the ionic liquid is alkyl imidazole trifluoro-mesylate which can improve hydrogen evolution and oxygen evolution over-potential of active substances to further inhibit the loss of charging and discharging water and reduce battery failures caused by drying-up of water. The alkyl imidazole trifluoro-mesylate has relatively low surface tension, and can be well compatible with other substances to ensure that an inorganic material has a relatively high nucleation rate, therefore, by adding alkyl imidazole trifluoro-mesylate into the positive electrode lead plaster, the crystallization rate of lead sulfate in a discharging process can be improved, and the super-saturation degree of lead sulfate is reduced to ensure that loosened and porous lead sulfate is generated on the surface of a positive electrode plate.

The invention discloses a weather-resistant building waterproof coating and a preparation method thereof. The weather-resistant building waterproof coating comprises the following raw materials in parts by weight: 100-200 parts of organosiloxane, 8-10 parts of an emulsifier, 10-20 parts of nanoparticles, 4-8 parts of a curing agent, 100-150 parts of water and 20-30 parts of nano metal oxide modified graphene oxide. In the nano metal oxide modified graphene oxide, a nano metal oxide is embedded into an interlayer structure of the graphene oxide, and the nano metal oxide accounts for 10-50% of the mass of the graphene oxide; and the nano metal oxide is any one of nano aluminum oxide, nano magnesium oxide, nano titanium dioxide, nano manganese dioxide, nano zirconium oxide and nano iron oxide. The obtained product has excellent weather resistance, and the service life of the waterproof function of the product can be effectively prolonged.

The invention belongs to the technical field of inorganic non-metallic materials, and particularly relates to a low-viscosity low-shrinkage ultra-high-performance concrete repairing material and a using method thereof. The material comprises the following components in parts by weight: 24-28 parts of Portland cement, 2-4 parts of sulphoaluminate cement, 4-5 parts of an expanding agent, 5-7 parts of a modified mineral admixture, 5-7 parts of a common mineral admixture, 20-25 parts of common aggregate, 20-25 parts of porous aggregate, 6-8 parts of water, 1-1.5 parts of a water reducing agent and 0-6 parts of steel fibers, wherein the sum of the parts by weight of all the components is 100, the porous aggregate firstly absorbs water during use, and the weight of the porous aggregate is calculated according to the weight before water absorption. The modified mineral admixture can increase the distance between particles in the slurry, reduce the viscosity of the slurry and improve the working performance of the slurry; and water in the saturated porous aggregate flows to pores under the action of capillary pressure difference between the aggregate and the pores of the concrete, so that the reduction of humidity in the concrete is inhibited, and the shrinkage of the concrete is greatly reduced.

The invention relates to the technical field of concrete, and discloses sprayed concrete and a preparation method thereof. According to the invention, an expanding agent is added, and the strong expansion operation of the expanding agent blocks a part of large cavities and defects in the high-performance concrete in the solidification and maintenance stage of the high-performance concrete, so that the anti-cracking and waterproof capabilities of the high-performance concrete structure are preliminarily improved. A waterproof nano powder is added, and the waterproof nano powder has a strong hydrophobic effect and a unique non-metal sheet structure, so that occlusion and connection among coarse and fine aggregates of the high-performance concrete can be effectively promoted, the contact area of a microstructure is enlarged, the porosity is reduced, and the compactness is improved; the movement of water in the high-performance concrete is reduced, the workability of a high-performance concrete mixture is improved, and bleeding and segregation are reduced; and movement of water and various acid radical ions in the high-performance concrete is effectively prevented, the high-performance concrete is protected against freeze-thaw damage and various severe environments, and the service life of the high-performance concrete is prolonged.

The invention relates to an anti-graffiti and scrubbing-resistant coating composition. The raw materials of the anti-graffiti and scrubbing-resistant coating composition comprise a component A and a component B, wherein the mass ratio of the component A to the component B is 100: (20-40); the component A comprises hydrophobic modified hydroxy acrylic resin, and the component B comprises a curing agent and alcohol ether esters; the hydrophobic modified hydroxy acrylic resin is prepared from hydrophobic gel, a fluorine surfactant and hydroxy acrylic resin; and the hydrophobic gel is prepared from polymethylsilane and alkoxy silicon resin. The invention also comprises a preparation method of the anti-graffiti and scrubbing-resistant coating composition. The product provided by the invention is energy-saving and environment-friendly, has low VOC, solves the problem of poor anti-graffiti effect of a water-based coating, and has a stain resistance score up to 87 scores. According to the method, the defect that the water-based coating is poor in stain resistance stability is overcome, after 10000 times of scrubbing resistance, the stain resistance still reaches 85%, and almost no attenuation exists.

The invention discloses a production method of a cooling machine inner cylinder coating comprising a cooling machine inner cylinder. The production method is characterized in that the cooling machineinner cylinder coating contains the following components: 10-15 of polytetrafluroethylene, 30-40 of cobalt, 60-90 of copper oxide and 5-11 of methyl acrylate. The production method of the cooling machine inner cylinder coating comprises the following steps: S1, melting cobalt and copper oxide by using the prior art according to a conventional way to form a liquid, and then, adding methyl acrylateto finally prepare a pouring solution; S2, producing a pouring gate by using the prior art according to a production demand, and uniformly pouring the pouring solution to the inner wall of the coolingmachine inner cylinder by virtue of the pouring gate, carrying out standing for 3-5 min after completing pouring, and immediately adding polytetrafluroethylene; and S3, standing the pouring-completedcooling machine inner cylinder for 5-10h. The finally-prepared cooling machine inner cylinder coating has a relatively good hydrophobic effect and is firm, durable and corrosion-resistant.

The invention relates to a method for hydrophobic modification of wood-base photochromic composite surfaces, in particular to a hydrophobic wood-base photochromic composite preparation method which solves the problem of poor anti-aging performance and hydrophobicity of surfaces of wood-base photochromic composites prepared by existing methods. The preparation method includes: coating photochromic film forming liquid on the surface of a preprocessed wood substrate, drying, and using isocyanate acetone solution and polyhydric alcohol acetone solution for surface hydrophobic modification of the wood-base photochromic composite to obtain the hydrophobic wood-base photochromic composite. A contact angle of a hydrophobic face of the prepared wood-base photochromic composite is up to 136 degrees maximally while photochromic performance and ageing resistance of the wood-base photochromic composite are unaffected, fine hydrophobic efficacy is achieved, and duration of the photochromic function is prolonged. The method is applicable to production of wood-base photochromic composites and photochromic composite films.

The invention discloses high-strength environment-friendly antibacterial wallpaper base paper, and belongs to the technical field of papermaking. The base paper is prepared from the following raw materials in parts by weight: 60-80 parts of wood pulp, 20-40 parts of modified chemical fibers, 20-30 parts of resin, 5-10 parts of a gas adsorbent, 6-10 parts of a wet strength agent, 6-10 parts of a dispersing agent, 1-3 parts of a bacteriostatic agent and 1-5 parts of a synergist. By effectively modifying the chemical fibers and adding the synergist with a synergistic effect, the moisture resistance of the wallpaper base paper is greatly optimized, and meanwhile, the mechanical strength of the base paper is greatly improved. The wallpaper base paper is smooth and moistureproof, does not curl or deform after long-term use, has greatly prolonged service life, also has antibacterial and deodorant effects, and has broad market prospects.

The invention relates to the technical field of building materials, and discloses rigid waterproof, freeze-thaw-resistant, corrosion-resistant and self-compacting high-performance concrete which is characterized in that the rigid waterproof, freeze-thaw-resistant, corrosion-resistant and self-compacting high-performance concrete comprises the following components: 400 to 500 parts of cement, 100 to 180 parts of water, 1200 to 1300 parts of stone, 500 to 600 parts of sand, 10 to 30 parts of an expanding agent, 0.5 to 2.5 parts of a water reducing agent, and 10 to 30 parts of waterproof nano powder, and the waterproof nano powder comprises the following components: mica powder, hydrophobic perlite powder, dimethyl silicone oil, a silane coupling agent and a surfactant. According to the rigid waterproof, freeze-thaw-resistant, corrosion-resistant and self-compacting high-performance concrete and the preparation method thereof, the waterproof nano powder is added, and the waterproof nano powder has a strong hydrophobic effect and a unique non-metal sheet structure, so that occlusion and connection among coarse and fine aggregates of the high-performance concrete can be effectively promoted, the contact area of a microstructure is enlarged, the porosity is reduced, and the compactness is improved.

The invention provides a hydrophobic friction material which comprises the following components in percentage by mass based on the total mass of raw material components of the hydrophobic friction material: 4-12% of a hydrophobic binder, 10-20% of a hydrophobic filler, 11-20% of steel fibers, 3-7% of titanium dioxide, 4-11% of amorphous graphite, 4-8% of garnet powder, 1-3% of tungsten sulfide and 21-61% of barite. The hydrophobic friction material has good hydrophobicity, and coefficient reduction of the friction material after the friction material encounters water can be effectively inhibited; and a brake pad prepared from the hydrophobic friction material is stable in friction coefficient, and the braking safety after a vehicle wades into water is guaranteed. The invention further provides a preparation method of the brake pad, the process is simple, and operation is convenient.

The invention relates to a hydrophobic waterproof emulsion and a preparation method thereof. The hydrophobic waterproof emulsion is prepared from the following raw materials in parts by weight: 10-26 parts of acrylic resin, 5-11 parts of beewax, 7-8 parts of an emulsifier, 3-6 parts of palmitic acid, 0.5-1 part of a defoaming agent, 0.1-0.2 part of a preservative and 40-60 parts of water. The hydrophobic waterproof emulsion is scientific and reasonable in component proportion and free of alkylphenol, and the system is low in odor and environmentally friendly. After testing, centrifugation, standing and lotus leaf hydrophobic effects are excellent, and the highest water resistance time can reach more than 7 days. The emulsion is high in stability, can be coated by a coating machine, can also be dip-coated and sprayed, and is suitable for producing corrugated paper, kraft paper, cardboard paper and the like with high hydrophobic and waterproof requirements; the process is simple and easy to control, and large-scale production is facilitated.

The invention discloses a multi-composite modified hydrophobic stone-like coating and a preparation method thereof. The feed multi-composite modified hydrophobic stone-like coating is prepared from the following raw materials in parts by weight: 100-200 parts of an organic silicon modified acrylic emulsion, 1-5 parts of a hydrophobic side chain type water-based poly-nitrogen vinegar associative thickener, 400-650 parts of natural stone powder, 1-5 parts of a lotus leaf hydrophobic agent, 50-100 parts of a long-chain silicon oxynitride emulsion, 5-20 parts of a coalescing agent, 1-5 parts of ap-hydroxybenzoate preservative, 1-10 parts of a defoaming agent and 50-100 parts of deionized water. The wear resistance of the hydrophobic layer is improved by compounding multiple hydrophobic layers, and traditional hydrophilic additives such as thickeners and preservatives are changed into hydrophobic additives, so that the water resistance of the coating is improved.

The invention provides a forming method of a bionic porous structure with hydrophobic resistance reducing capability. According to the forming method, the porous structure is prepared on a metal surface by utilizing an ultrafast laser technology, a micro-arc oxidation technology or an anodic oxidation technology; the surface opening width of the porous structure is less than or equal to 2 mm; and the depth-to-width ratio is greater than or equal to 1:1. The bionic porous structure not only has the super-hydrophobic resistance reducing capacity but also is stable, durable and high in scouring resistance.