59results about How to "Small rolling angle" patented technology

The invention relates to a copper based super-hydrophobic surface with a low friction coefficient and a preparation method thereof. The copper based super-hydrophobic surface with a low friction coefficient is characterized in that chemical etching is performed on the surface of a copper based material to form a coarse structure with a micron-scale pit structure and submicron / nano-scale metal silver particles, and then a product is obtained through surface chemical modification. The copper based super-hydrophobic surface with low friction coefficient has a contact angle of more than 150 degrees to water, is low in friction coefficient, can be stably maintained, and has good super-hydrophobic properties and low friction coefficient.

The invention discloses a nano super-hydrophobic coating which comprises the following materials in parts by mass: 50-3650 parts of nano silicon dioxide, 20-120 parts of hexamethyl-disilazane, 350-600 parts of a solvent, 200-450 parts of organic silicon resin and 5-25 parts of a curing agent, wherein the curing agent is aliphatic polyamine; and the solvent is one or a combination of some of absolute ethyl alcohol, normal propyl alcohol, isopropanol, acetone, tetrahydrofuran, N,N-dimethyl acetamide or N,N-dimethylformamide, methylbenzene and dimethylbenzene. The production technology comprises the steps: S1, preparing a filling solution, S2, preparing a super-hydrophobic solution, and S3, preparing the super-hydrophobic coating. The raw materials adopted by the coating are simple and easy to obtain; a preparation process is easy; the production cost is low; the prepared super-hydrophobic coating has the advantages of large contact angle, small roll angle, high light transmittance and the like, is long in service life and strong in adhesion and has wide application prospects.

The invention discloses a universal preparation method for self-cleaning superhydrophobic paper, and is characterized in that the universal preparation method comprises the steps: dipping ordinary paper in a zinc oxide ethanol solution having a micro / nano hierarchical structure for 5-10 min, drying for 2-5 min at the temperature of 80-100 DEG C, then again putting into the zinc oxide ethanol solution, carrying out dipping treatment, and repeating the steps for 4-8 times; and carrying out low-surface-energy modification on the product with an ethanol or toluene solution of stearic acid with the concentration of 3-5%, to obtain the superhydrophobic filter paper. The preparation method of the self-cleaning superhydrophobic paper is simple, raw materials are cheap and easily obtained, a contact angle of the surface of the obtained paper with water is greater than 150 degrees and the roll angle is less than 5 degrees, the self-cleaning property is excellent, and industrialization production is easy.

The invention relates to a super-hydrophobic and superoleophilic metal nickel net as well as a preparation method and application thereof. The super-hydrophobic and superoleophilic metal nickel net comprises a nickel net and a metal sulfide coating with a micro-nanostructure; the metal sulfide coating is generated on the surface of the nickel net in situ, is modified by a surface modifier and is an Ni3S2 coating or a composite coating of Ni3S2 and MoS2; the surface modifier is a silane coupling agent or / and a mercaptan long-chain compound.

The invention relates to a method for preparing two types of super-hydrophobic membranes simultaneously by utilizing ferric chloride, in particular to a method for preparing a copper myristate membrane with a micro / nano-structure and a myristic acid membrane embedded with iron particles. The method is technically characterized in that: the ferric chloride and myristic acid powder are dispersed in absolute ethanol to form uniform electrolyte, and two copper sheets with 60mm*25mm*1.5mm are taken as electrodes and are electrolyzed under certain direct-current voltage for a certain period of time, so that the copper myristate membrane with the micro / nano-structure is formed at an anode and the myristic acid membrane embedded with the iron particles is formed at a cathode. The invention provides a simple method for preparing super-hydrophobic membranes at the anode and the cathode simultaneously for the first time; and the super-hydrophobic membranes have good super-hydrophobic performance and have wide application prospect.

The invention discloses a moistening and color-retaining lip glaze and a preparation method thereof. The lip glaze is prepared from the following components in parts by weight: 35-100 parts of liposome embedding liquid, 50-200 parts of emulsion matrix and 25-50 parts of a thickening agent, wherein the liposome embedding liquid is prepared from liposome microcapsules and a nourishing solution; thenourishing solution is embedded in capsules of the liposome microcapsules, and a light-color lipid-soluble coloring agent is added in the capsule layers; the emulsion matrix is prepared from ultrapuresilicon dioxide powder having a grain size of 10-30[mu]m, silica sol and oil-in-water emulsion, and can form a lotus leaf-like hydrophobic structure after the ultrapure silicon dioxide powder and silica gel are dried and cured, so that the lipid layer is effectively prevented from being polluted by other objects, and the color duration is improved; the moisture content of the skin surface layer can be further increased on the premise that the liposome microcapsules can be moistened with mixed lipid in the emulsion matrix, and the effect of moistening and moisture supplying can be achieved; and the thickening agent can be used for effectively reducing the greasy and thick feeling of the lipid layer and improving the whole malleability, smoothness and stability of the lip glaze.

The present invention belongs to the field of self-cleaning coating technology. In the concrete, it relates to a self-cleaning fluorocarbon coating with lotus leaf effect. It is made up by using organic silicon modified fluorocarbon resin, solidifying agent, hydrophobic particles, pigment, filling material, adjuvant and solvent according to the mixing ratio of 1:0.1-0.3:0.03-0.1:0-0.36:0-0.1:0.01-0.05:0.1-0.3 through a certain preparation process.

The invention discloses a preparation method of a super-hydrophobic coating based on polydopamine self-assembly, which comprises the specific steps of dissolving dopamine hydrochloride and nano zero-valent iron in a tris (hydroxymethyl) aminomethane-hydrochloric acid buffer solution to obtain a mixed solution, wherein the molar concentrations of the dopamine hydrochloride and the nano zero-valent iron in the mixed solution are both 1-50 mM; dipping a material to be coated into the mixed solution at room temperature, and enabling the material to be coated and the mixed solution to be in full contact; taking out the material obtained after dipping in the step S2, washing and drying; and soaking the material obtained in the step 3 in a low-surface-energy modifier, enabling the material and the low-surface-energy modifier to make full contact, and after cleaning and drying are conducted, obtaining the super-hydrophobic coating based on polydopamine self-assembly on the surface of the material to be coated. The static water contact angle of the obtained coating can reach 160.5 degrees to the maximum, the rolling angle can reach 1 degree or below to the minimum, and the coating has excellent super-hydrophobicity and has wide application prospects in the fields of composite material preparation, self-cleaning, oil-water separation, marine corrosion prevention, antifouling and the like.

The invention relates to the field of metal surface modification, in particular to a method for preparing an aluminum oxide nanostructure on the surface of a titanium alloy and improving the antifouling property of the titanium alloy. The method comprises the steps that firstly, after the surface of the titanium alloy is cleaned, a nanometer aluminum coating is arranged on the surface of the titanium alloy in a magnetron sputtering manner, through heat treatment in air, an unoxidized Al and Ti substrate forms an alloy layer through atom diffusion, a magnesium powder solid phase method is used for dealloying, and the titanium alloy with nanometer aluminum oxide particles dispersed on the surface is obtained through cleaning and drying; and then, the titanium alloy surface with the nanometer aluminum oxide particles deposited on the surface is subjected to chemical modification through an ethanol solution of (3, 3, 3-trifluoropropyl) methyldimethoxysilane, and the hydrophobic performance of the titanium alloy surface is further improved. The method is simple and feasible, an atomic diffusion alloy deposition layer and a stable aluminum oxide coating are obtained through heat treatment in air, and a dispersed aluminum oxide structure can be prepared on the titanium alloy surface.

The invention relates to a copper based super-hydrophobic surface with a low friction coefficient and a preparation method thereof. The copper based super-hydrophobic surface with a low friction coefficient is characterized in that chemical etching is performed on the surface of a copper based material to form a coarse structure with a micron-scale pit structure and submicron / nano-scale metal silver particles, and then a product is obtained through surface chemical modification. The copper based super-hydrophobic surface with low friction coefficient has a contact angle of more than 150 degrees to water, is low in friction coefficient, can be stably maintained, and has good super-hydrophobic properties and low friction coefficient.

The invention relates to a super-hydrophobic polyurethane / oxide nano particle hybrid coating and a preparation method thereof. The super-hydrophobic coating is prepared by oxide nano particles, silane coupling agent and polyurethane which have wide material source and are easily obtained through a self-assembly method, and has the contact angle of 140-168 degrees and the rolling angle of 1-20 degrees as well as good visible light permeability. The invention solves the problems that the currently prepared transparent super-hydrophobic coating needs extremely low surface energy perfluorinated silane modification, has high production cost and complicated technique, and can not realize large-scale production. The method has simple technique, easily obtained raw material and low cost; and the prepared super-hydrophobic coating can be taken as a dustproof and antifogging protective coating of the surface of solids such as glass and the like, and a waterproof insulating layer used in a micro-electronic device, a sensor and the like.

The invention relates to a preparation method of a surface super-hydrophobic composite material. According to the technical scheme, PTFE micro-powder particles with strong super-hydrophobic property and excellent high-temperature resistance are used as super-hydrophobic components to be added into a resin matrix for an outer-layer adhesive film, so that the super-hydrophobic property of the finalcomposite material is improved; matrix resin for an inner adhesive film and an outer adhesive film is respectively prepared, the adhesive films are prepared, a prepreg is prepared by adopting a step-by-step pre-impregnation method; and finally, slitting and paving according to specified width requirements are carried out, and putting into an autoclave for high-temperature curing molding is carriedout, thereby completing the preparation of the super-hydrophobic composite material. The method has the greatest advantages that the super-hydrophobic coating can be integrally formed in the preparation process of the composite material, the binding force between the prepared super-hydrophobic surface layer and the composite material is high, and the super-hydrophobic characteristics of the prepreg and the resin-based composite material can be improved. The super-hydrophobic resin-based composite material prepared by the invention has the advantages of self-cleaning property, strong moistureabsorption resistance, strong freezing resistance, stable hydrophobic property and the like, has great technical advantages, and is of great significance to the application of novel resin-based composite materials for aerospace.

The present invention discloses a super-hydrophobic coating and a preparation method and application thereof. By cross-linking and solidifying raw materials of a hydrophobic resin, a good solvent of the hydrophobic resin, organosilane, polystyrene, a photo initiator, a cross-linking agent, a curing agent and the like, through high-speed dispersion, water-bath reaction and other steps, the super-hydrophobic coating is obtained. The preparation process of the invention is simple, the reaction condition is mild, the super-hydrophobic coating prepared by the method has good adhesion and wear resistance, and has a wide application prospect in production and life.