44results about How to "Improve salt spray corrosion resistance" patented technology

The invention provides a hydrophobic surface coating and a preparation method thereof, and the hydrophobic surface coating is formed on the surface of a substrate through a plasma enhanced chemical vapor deposition method by taking one or more fluorinated alcohol compounds as reaction gas raw materials, so as to improve the hydrophobicity, chemical corrosion resistance and weather resistance of the surface of the substrate.

The invention relates to an epoxy resin emulsion and application thereof in a water-based paint, and belongs to the technical field of paints. The emulsion is prepared by the following steps: performing crosslinking and hydrolytic polymerization on polyether and siloxane to obtain a prepolymer with unsaturated bonds, and performing grafting reactions on the prepolymer, an acrylic monomer, and epoxy resin at the same time to obtain modified epoxy resin emulsion. The emulsion has better weather resistance and ultraviolet resistance than conventional acrylic acid modified water-based epoxy resinemulsion when being applied to water-based epoxy coatings.

The invention provides a hot-dipped galvanized alloy coating with high corrosion resistance for a steel member. The improvement is that, when the alloy coating is prepared, an adopted alloy ingot comprises the following components in percentage by weight: 0.01-2% of Al, 0.01-2% of Mg, 0.05-3% of Re, 0.002-1% of Cu and the balance of Zn. The alloy coating has the characteristics of high corrosion resistance, low zinc consumption, better economy and the like, which are suitable for the steel members of power transmission lines, and the alloy coating can effectively prolong the corrosion-resistant service life of the steel member of the power transmission line and prolong the corrosion-resistant service life by above 2 times in comparison with industrial hot-dipping of pure zinc while ensuring that the thickness of the coating is not increased.

The invention discloses a radar safety guard, belonging to the surface technical field. The radar safety guard comprises a polycarbonate base. The radar safety guard is characterized by further comprising a transparent polycarbonate front cover connected with the polycarbonate base, one side of the transparent polycarbonate front cover, facing a radar, is sequentially provided with a primer layer, a colored layer, a vacuum plated nano metallic layer and a painting protective layer from inside to outside, and each of the vacuum plated nano metallic layer and the painting protective layer both has electromagnetic wave back-and-forth penetration attenuation being not more than 0.2dB. The radar safety guard is excellent in corrosion resistance, has very low wave back-and-forth penetration attenuation, and can be adapted to the reliability of the attenuation when the loading position is in a certain range of three-dimensional directions.

The invention discloses a zinc-aluminum-titanium-rare earth alloy for hot dip galvanized steel sheets and a preparation method thereof, and belongs to the technical field of surface treatment of iron and steel materials. The hot dip galvanized alloy material comprises the following components in percentage by mass: 5.5 to 6.5 percent of aluminum (Al), 0.03 to 0.05 percent of titanium (Ti), 0.05 to 0.15 percent of rare earth (RE) metal, and the balance of zinc (Zn). The method for preparing the hot dip galvanized alloy material comprises the following steps of: heating and melting the aluminum, and adding the rare earth metal and titanium metal to prepare an aluminum-rare earth intermediate alloy with a certain mass ratio and an aluminum-titanium intermediate alloy with a certain mass ratio respectively; and heating and melting the zinc, adding the aluminum and the intermediate alloy materials according to the given proportion, and completely melting and stirring uniformly to obtain the required zinc-aluminum-titanium-rare earth alloy. The hot dip galvanized alloy material guarantees the surface finishment of hot dip galvanized layers and remarkably improves salt spray corrosion resistance of steel sheets; meanwhile, the preparation method has low process requirements, is easy to operate, and can meet the requirements of industrialized production.

The invention discloses an environment-friendly emulsified antirust oil, which comprises the following components in terms of mass percentage: 5% to 20% of barium-free sulfonate; 0.5% to 5% of N-oleoyl sarcosine octadecylamine; wool 2-10% of fat magnesium soap; 2-10% of triethanolamine oleic acid soap; 0.5-5% of fatty alcohol polyoxyethylene ether; 0.5-5% of triethanolamine; the balance is base oil. The environment-friendly emulsified antirust oil provided by the present invention adopts an oil-soluble antirust agent that does not contain heavy metals such as barium and lead, and is environmentally friendly; Combining oil-soluble antirust agents such as lanolin magnesium soap with triethanolamine oleic acid soap, fatty alcohol polyoxyethylene ether, triethanolamine, and base oil can effectively improve the antirust performance of emulsified antirust oil, especially salt spray resistance corrosion performance.