32results about How to "Increased static contact angle" patented technology

The invention relates to paper manufactured with pulp by carboxymethylcellulose modified nanometer titania. The paper is prepared by the following steps that (1) aluminum sulfate is prepared to form an aqueous solution with mass concentration of 5%-20%, filter paper is impregnated for one to three minutes, and the filter paper is dried at the temperature of 100 DEG C to 105 DEG C and numbered; (2) carboxymethylcellulose with concentration of 5%-9% is added into ethyl alcohol, nanometer titania is added and dispersed in a carboxymethylcellulose-ethyl alcohol solution in a ratio of nanometer titania to carboxymethylcellulose being (1:1)-(1:4) to obtain the carboxymethylcellulose-ethyl alcohol solution with the nanometer titania, and the filter paper impregnated in aluminum sulfate in the step (1) is subjected to dip-coating in the carboxymethylcellulose-nanometer titania ethanol solution for many times; then air drying is performed for 24 hours to 48 hours to obtain the paper.

The application relates to a telecommunication base station with self-cleaning and corrosion-resistant effects. The telecommunication base station comprises a base station body, wherein the base station body comprises a base and a hydrophobic anti-corrosion layer arranged on the surface of the base; the hydrophobic anti-corrosion layer is formed in the way that mixed particles are sprayed onto the surface of the base through the cold spraying technology; and the base station body has a favorable hydrophobic effect, manifested as favorable self-cleaning and corrosion-resistant performance.

The invention provides paper prepared through carboxymethylcellulose modified sodium silicate pulp. The paper is prepared through the following steps: firstly, preparing water solution of aluminum sulfate with the mass concentration percent of 5-20%, dipping filter paper for 1-3 min, then drying and numbering the filter paper at 100-105 DEG C, secondly, adding sodium silicate into carboxymethylcellulose ethyl alcohol with carboxymethylcellulose concentration of 8-12% according to the ratio of sodium silicate to carboxymethylcellulose being 1:1 to 1:4, so as to ensure that the sodium silicate is dispersed in carboxymethylcellulose-ethyl alcohol solution, obtaining carboxymethylcellulose-ethyl alcohol solution containing sodium silicate, lifting and dipping the filter paper dipped by aluminum sulfate and obtained in step one into the carboxymethylcellulose-sodium silicate ethyl alcohol solution for multiple times, and then performing air drying on the filter paper for 24-48 h, so as to obtain the paper.

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 present invention relates to paper made through AKD modified sodium silicate. The preparation method comprises: (1) preparing an aluminum sulfate aqueous solution with a concentration of 5-20%, dipping filtration paper in the solution for 1-3 min, drying the filtration paper at a temperature of 100-105 DEG C, and numbering; and (2) adding AKD with a concentration of 8-12% to ethanol, adding sodium silicate according to a ratio of the sodium silicate to the AKD of 1:1-1:4, dispersing into the AKD-ethanol solution to obtain the AKD-ethanol solution containing the sodium silicate, carrying out pulling dipping on the filtration paper obtained in the step (1) in the AKD-sodium silicate ethanol solution a plurality of times, and carrying out air drying for 24-48 h so as to obtain the product.

The present invention relates to paper made through stearic acid modified nanometer silica. The preparation method comprises: (1) preparing an aluminum sulfate aqueous solution with a concentration of 5-20%, dipping filtration paper in the solution for 1-3 min, drying the filtration paper at a temperature of 100-105 DEG C, and numbering; and (2) adding stearic acid with a concentration of 6-10% to ethanol, adding nanometer silica according to a ratio of the nanometer silica to the stearic acid of 1:1-1:4, dispersing into the stearic acid-ethanol solution to obtain the stearic acid-ethanol solution containing the nanometer silica, carrying out pulling dipping on the filtration paper obtained in the step (1) in the stearic acid-nanometer silica ethanol solution a plurality of times, and carrying out air drying for 24-48 h so as to obtain the product.

The present invention relates to paper made through stearic acid modified nanometer titanium dioxide. The preparation method comprises: (1) preparing an aluminum sulfate aqueous solution with a concentration of 5-20%, dipping filtration paper in the solution for 1-3 min, drying the filtration paper at a temperature of 100-105 DEG C, and numbering; and (2) adding stearic acid with a concentration of 5-9% to ethanol, adding nanometer titanium dioxide according to a ratio of the nanometer titanium dioxide to the stearic acid of 1:1-1:4, dispersing into the stearic acid-ethanol solution to obtain the stearic acid-ethanol solution containing the nanometer titanium dioxide, carrying out pulling dipping on the filtration paper obtained in the step (1) in the stearic acid-nanometer titanium dioxide ethanol solution a plurality of times, and carrying out air drying for 24-48 h so as to obtain the product.

The invention discloses a method for preparing a surface of a titanium alloy with a high wear-resistant rose petal effect, which is specifically implemented according to the following steps: step 1, surface pretreatment of the titanium alloy; step 2, construction of a microstructure on the surface of the titanium alloy; step 3, electrophoretic deposition treatment; Step 4, fluorination treatment, and finally a high adhesion surface is obtained. The present invention solves the problem of lubricant creep loss during mechanical lubrication existing in the prior art.

The invention provides a self-cleaning heat-insulating coating for building exterior walls and roofs and a preparation method. In this method, ethylene-vinyl acetate copolymer emulsion is used as the polymerization seed, and perfluoroalkyl ethyl acrylate and acrylic acid are grafted and copolymerized to obtain a composite emulsion, and then micronized with heptadecafluorodecyltrimethoxysilane and nano thermal insulation fillers for surface modification, and finally composite emulsion, fluorine-modified micro-fillers, fluorine-modified nano-fillers, pigments, wetting and dispersing agents, polyvinyl formal glue, ammonia water, cross-linking agents, defoamers, ultraviolet absorbers The self-cleaning heat-insulating coating for exterior walls and roofs of buildings can be obtained by mixing uniformly with the agent and appropriate amount of water. Compared with the traditional method, the coating made of the heat-insulating coating of the present invention has a higher contact angle to water and oil, and the water drop or oil drop cannot automatically expand on the coating surface and maintain a spherical shape, and it is easy to roll off the surface And take away other adhered pollutants, thus showing a good self-cleaning effect.

The invention relates to a long-lasting anti-fouling membranous-structure composite canopy material comprising a base membrane, base cloth and a surface membrane which are arranged sequentially from bottom to top, wherein a polyvinylidene fluoride coating is arranged on the surface membrane and is subjected to mirror face embossing treatment; the surface membrane as well as the base membrane is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride (PVC) resin powder, 50 to 70 parts of a dioctyl terephthalate plasticizer, 5 to 25 parts of calcium carbonate powder, 1 to 5 parts of a flame retardant, 1 to 4 parts of a smoke suppressant, 1 to 6 parts of a barium-zinc stabilizer and 1 to 5 parts of a titanium pigment; the base cloth is 1000D*1000D polyester fiber woven cloth. Raw materials such as PVC resin powder, the plasticizer, calcium carbonate, the stabilizer and the flame retardant are mixed, plasticizing and calendaring are carried out to obtain soft membranes, then the soft membranes are compounded with the 1000D*1000D polyester fiber woven cloth, and embossing is carried out after surface treatment of polyvinylidene fluoride, so that the long-lasting anti-fouling membranous-structure composite canopy material is a membranous-structure composite canopy material being long-lasting in fouling resistance, efficient in fire retardancy, and high in strength.