603results about How to "Excellent superhydrophobic properties" patented technology

The invention discloses a highly-wear-resistant super-hydrophobic composite coating and a preparation method thereof. The preparation method includes the steps that the surface of a base is coated with hydrophobic resin primer containing compound micropowder through a brush coating or spray coating method, the surface of the resin primer is sprayed with hydrophobic organic/inorganic hybrid nano-paint after semi-curing, and the highly-wear-resistant super-hydrophobic composite coating is obtained after complete curing. The highly-wear-resistant super-hydrophobic composite coating and the preparation method thereof have the advantages that equipment and the process are simple, operation is easy and cost is low, and have the industrial mass production prospect. The prepared super-hydrophobic composite coating can be applied to various hard/soft bases such as glass, copper, aluminum, stainless steel, exterior wall tiles, wood, paper and cloth and can bear damage of external force such as sanding.

The invention provides a super-hydrophobic nanometer transparent coating and a preparation method thereof and belongs to the technical field of super-hydrophobic paint. The method includes the steps that firstly, a first category of inorganic nanometer particles are added into an organic solution, and ultrasonic dispersion is performed; secondly, dispersing agents and a second category of inorganic nanometer particles are added, and ultrasonic dispersion is performed so that a dispersion solution can be obtained; crosslinking agents and additives are added in the dispersion solution, ultrasonic dispersion is performed, finally, low-surface energy polymers are added, mixtures are evenly mixed, and transparent and clear super-hydrophobic paint is obtained; the surface of a solid base materials is coated with the transparent and clear super-hydrophobic paint, and the super-hydrophobic nanometer transparent coating is obtained through low-temperature thermal drying and curing. The super-hydrophobic performance of the super-hydrophobic nanometer transparent coating prepared through the method is excellent, the contact angle can be 160 degrees, the rolling angle is 1-7 degrees, the super-hydrophobic nanometer transparent coating can be sprayed to the surfaces of most of common materials, the morphology of the surfaces of the materials are not changed, and the application prospects and the application potency are very wide.

The invention discloses a method for preparing a wear-resisting super-hydrophobic coating through a cold spraying technology and a product of the method. The method comprises the following steps that firstly, the surface of a base body is roughened; secondly, sprayed powder is modified with low-surface-energy matter; and thirdly, the wear-resisting super-hydrophobic coating is prepared on the surface of the base body through the cold spraying technology. The static contact angle of the coating prepared through the method can be 150-180 degrees, the rolling angle of the coating is smaller than 10 degrees, and good super-hydrophobicity is achieved. According to the method, the product of a non-stick pan is prepared and has good wear resistance and non-stick performance, and compared with non-stick pans in the market, the product is more resistant to wear and has the great competitive potential in the field. In addition, the method can be used for preparing different wear-resisting super-hydrophobic coatings based on different base materials (such as metal, ceramic, glass and plastic), and the application range is wide.

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 relates to a simple and easy preparation method for super-hydrophobic fiber and textile with high contact angle and low rolling angle and application thereof. Surface chemical modification is directly carried out on intrinsic coarse structures on the surface of the fiber and textile so as to prepare a fiber product with super-hydrophobic performance; the method comprises the following steps of: firstly, cleanly washing materials, then carrying out isocyanate modification on the material, and finally modifying low surface energy material. The raw material is cheap and is easily available; reaction conditions are relatively mild; the operation is simple; and the requirement on the device is low. The obtain product has good super-hydrophobic performance; the contact angle of 10microliter of water is 156 degrees; and the product has wide application in fields of self-cleaning fibers and textiles.

The invention provides a super-hydrophobic composite coating and a preparation method thereof. The preparation method comprises the following steps: step 1, ultrasonically dispersing epoxy resin and acuring agent of the epoxy resin in an organic solvent so as to form a uniform epoxy resin solution, spraying the epoxy resin solution onto the substrate surface, and carrying out drying; step 2, ultrasonically dispersing the epoxy resin and the curing agent of the epoxy resin in the organic solvent so as to form the uniform epoxy resin solution, adding an inorganic nanofiller into the epoxy resinsolution, carrying out uniform stirring and dispersing so as to obtain a mixed solution, and then spraying the mixed solution onto the substrate surface obtained in step 1; and step 3, ultrasonicallydispersing polydimethylsiloxane and a curing agent of polydimethylsiloxane in an organic solvent so as to form a uniform polydimethylsiloxane solution, spraying the polydimethylsiloxane solution ontothe substrate surface obtained in step 2, carrying out drying, and acquiring the super-hydrophobic composite coating after complete curing. The preparation method has the beneficial effects that no special equipment is needed; and not only is the operation simple and the application range wide, but also the super-hydrophobic performance of the coating can be greatly improved.

The invention provides a low-cost superhydrophobic surface treatment method of aluminum alloy, which comprises the following steps: (1) carrying out chemical etching on the surface of the aluminum alloy by utilizing hydrochloric acid aqueous solution with the mass-volume concentration of 70g/L-95g/L in water bath at the temperature of 30-50 DEG C for 3-6min; and (2) carrying out evaporation modification on the surface of the aluminum alloy by utilizing long chain fatty acid solution by an evaporation method, wherein, the long chain fatty acid comprises at least one of lauric acid and stearic acid, and the long chain fatty acid solution is prepared by dissolving fatty acid into an ethanol solvent based on the mass percent of 3wt.%-15wt.%. The evaporation method comprises the following steps: placing the long chain fatty acid solution and the aluminum alloy subject to chemical etching treatment in a sealed container; putting the sealed container in a chamber electric furnace, heating until the temperature of the mixture is up to 100-200 DEG C, and performing heat preservation for 1-3h; and taking out the aluminum alloy and placing the aluminum alloy in the chamber electric furnace again, curing at the temperature of 50-90 DEG C for 0.5-1.5h, and finally taking out the aluminum alloy, and carrying out air cooling on the aluminum alloy to obtain the aluminum alloy surface which has the advantages of good superhydrophobic characteristic and less possibility of being adhered to water drops.

The invention provides super-hydrophobic cement and a preparing method and application thereof. The preparing method comprises the steps that cement powder, fine sand and hydrophobic modifier are added into ethyl alcohol in sequence under low-speed mechanical stirring conditions, and then high-speed stirring is conducted to obtain a modified cement fine sand solution; the modified cement fine sandsolution is filtered, dried and smashed to obtain super-hydrophobic cement fine sand mixed powder; under low speed mechanical stirring conditions, the super-hydrophobic cement fine sand mixed powderis put into an aqueous solution containing surfactant, dispersing agent and fluoroalkyl silane, and then mechanical stirring is conducted to form the super-hydrophobic cement. According to the method,a coating does not need to be prepared additionally, the technology is simple, the operation is simple, the super-hydrophobic cement is suitable for large-scale preparation and production, the overall super-hydrophobic property of obtained concrete is good, the inside is still not super-hydrophobic after abrasion, the super-hydrophobic property is not easily damaged, and the super-hydrophobic cement is applicable to various concrete application places and has a good prospect.