32results about How to "Excellent resistance to salt spray corrosion" patented technology

The invention discloses a high-strength wear-resistant modified natural rubber, which comprises the following raw materials in parts by weight: 60-70 parts of natural rubber, 15-20 parts of EPDM rubber, 6-9 parts of butadiene rubber, reinforcing agent 8-10 parts, 2.5-3.5 parts of epoxy resin, 2-3 parts of silane coupling agent, 1-2 parts of accelerator, 1-2 parts of anti-aging agent, 0.3-0.5 parts of emulsifier, 4.5-5 parts of plasticizer . The rubber obtained in the invention shows good mechanical strength at high temperature and low temperature, and also has excellent wear resistance, good sunlight resistance, ultraviolet aging resistance and weather resistance. In addition, the rubber obtained in the present invention also has good salt spray corrosion resistance, excellent flame retardancy, good comprehensive performance, long service life, and can meet various fields, such as aviation products and automotive wipers, sealing strips, sealing rings, etc. Requirements.

The invention discloses a catenary steel wrist arm positioning device coated with a dirt-repelling composite coating and a processing method, which is characterized in that: the outer surface of the bottom anti-corrosion coating of some or all parts is coated with a dirt-repelling composite coating, The dirt-repellent composite coating is an anti-corrosion conductive dirt-repellent paint. The catenary steel wrist arm positioning device of the present invention has low manufacturing cost, and the long-term anti-corrosion coating and the dirt-repellent composite coating have a good anti-corrosion effect, which can effectively avoid or reduce the adhesion of corrosive dirt such as dust, and greatly improve the anti-corrosion effect. The life and operation safety and reliability of the new steel wrist arm positioning device are guaranteed.

The invention discloses a dirt-repellent and anti-corrosion-type steel wrist arm positioning device and a processing method for contact nets. The surface is coated with a dirt-repelling composite coating, and the dirt-repelling composite coating is an anti-corrosion conductive dirt-repelling paint. On the premise of not affecting the surface conductivity of catenary components, a coating with fouling function is prepared on hot-dip galvanized or GalFan alloy anti-corrosion coating, which reduces the deposition of corrosive pollutants on the surface of catenary components in the tunnel and improves The overall anti-corrosion performance and service life of the steel wrist arm positioning device are guaranteed.

The invention discloses an aluminum alloy for a main frame structure of a transmission tower and a preparation method thereof and relates to the field of aluminum alloy casting, in particular to an aluminum alloy for a main frame structure of a transmission tower and a preparation method thereof. The aluminum alloy aims to solve the problem that an existing aluminum alloy is not suitable for the severe natural environment of the transmission tower and is poor in corrosion resistance. The aluminum alloy is prepared from the following elements in percent by mass: 5.5-6.5% of Zn, 1.2-1.9% of Mg, 0.1-0.3% of Mn, 0.05-0.25% of Cu, 0.05-0.25% of Zr, 0.02-0.1% of Ti, less than or equal to 0.25% of Fe, less than or equal to 0.15% of Si and the balance of Al and other inevitable impurity elements. The preparation method comprises the following steps: I, material preparation; II, smelting; III, refining and heating; IV, modification; and V, casting and twin-stage heat treatment. The preparation method disclosed by the invention is used for casting the high strength aluminum alloy for the main frame structure of the transmission tower.

The invention relates to a durable polyurethane finish capable of resisting marine-atmosphere environment, and a preparation method thereof. An A solution is prepared by an HDI trimer, a corrosion inhibitor and polyurethane-grade butyl acetate; a B solution is prepared by a polyurethane resin hydroxyl component, xylene, a polymethacrylate solution, a fluorine-containing organosilicone solution, a silicone-free acrylic polymer, a polysiloxane-polyether copolymer, a mixture of alkaline and acidic fatty acid surface active substances, a ultraviolet absorber, a light stabilizer, a polyurethane curing accelerator, a polyethylene micronization wax and precipitated barium sulphate, quartz powder, sericite powder and rutile-structured titanium dioxide. When being in use, the A solution and the B solution are mixed and cured to form a coating. The coating has good adhesion with a micaceous iron epoxy coating and an epoxy paste coating and has excellent weather resistance and salt fog resistance. An artificial accelerated aging test shows that gloss retention of the finish can reach 80% at 3,000 h. The finish can be applied in ocean platform overhead pipelines and offshore wharf surface pipelines.

The invention discloses an anti-corrosion conductive dirt-repellent paint for catenary components, which is characterized in that it is used for corrosion and dirt-repellent protection of catenary components in tunnels, and the anti-corrosion conductive dirt-repellent paint comprises the following components in mass parts Parts: 10-20 parts of film-forming resin, 55-65 parts of silicone monomer, 0.5-2.5 parts of crosslinking agent, 5-10 parts of interface adhesive, 0.1-0.3 parts of catalyst, 30-60 parts of conductive filler, slow 1-3 parts of corrosion passivator, 0.2-0.4 parts of orientation agent, 3-6 parts of anti-sedimentation agent, 10-20 parts of solvent, 0.3-0.8 parts of defoamer, 5-20 parts of pigment and filler; among them, The film-forming resin is silicone-modified bisphenol A epoxy resin. After the dirt-repellent coating is formed into a film, the coating film is dense, high in hardness, and low in surface energy. It has excellent salt spray corrosion resistance, moisture and heat corrosion resistance, electrical conductivity and dirt-repelling properties, which can meet the requirements of dirt-repelling and anti-corrosion in the tunnel of high-speed rail catenary components. and electrical needs.

The invention relates to strippable protective coating, which is used for ocean transportation of mechanical products. The strippable protective coating comprises the following components in parts by mass: 30-50 parts of film former, 2.5-4.5 parts of ultraviolet absorber, 5-10 parts of corrosion inhibitor, 0.3-0.8 part of defoaming agent, 0.5-1 part of flatting agent, 2-5 parts of organic bentonite, 15-30 parts of pigment filler, 0.3-0.7 part of thermal stabilizer, and 60-80 parts of solvent, wherein the film former is a styrene-butadiene-styrene segmented copolymer. After forming films, the strippable protective coating has excellent salt spray corrosion resistance and ultraviolet aging resistance, has stable property in an ocean environment, and can solve the protection problem of mechanical products in ocean transportation.

The invention discloses an anodic oxide film pre-hole-sealing method and hole sealing agent. The method comprises pre-sealing and spraying protection. The invention simultaneously discloses a scheme of the hole sealing agent for pre-hole-sealing of an anodic oxide film of an aluminum alloy workpiece, and the main components of a protective agent, wherein the hole sealing agent comprises the following components of 2-10 g / l of nickel salt, 0.5-10 g / l of fluoride, 0.1-0.5 g / l of a complexing agent, 0.1-0.5 g / l of a dust inhibitor, 0.001-0.1 g / l of a pH conditioning agent, 0.01-0.1 g / l of graphene oxide, 0.05-2 g / l of a surfactant, and pure water is taken as a solvent. Compared with the prior art, the method is simple, the corrosion resistance, alkali resistance, continuous acid-alkali resistance and car washing alkali resistance of the processed anodic oxide film of the aluminum alloy workpiece can pass tests, the high-temperature thermal cracking resistance is stable, and the antifouling capability is strong.

The invention provides a water-based, environment-friendly and high-temperature coating and relates to the technical field of chemical coatings. The coating comprises, in parts by mass, 20-40 parts of water-based polyether sulfone resin, 20-40 parts of water-based polyamide imide resin, 5-15 parts of water-based silicone resin, 1-5 parts of polytetrafluoroethylene resin, 5-15 parts of an ether solvent, 1-5 parts of a pigment, 5-20 parts of filler, 0.1-1 part of a wetting agent, 0.1-1 part of an antifoaming agent and 10-30 parts of deionized water. The coating has outstanding comprehensive performance, prominent hardness, rich gloss, excellent high temperature resistance, higher salt fog resistance, high resistance to water, steam, oil, solvents and chemicals, excellent adhesive force and toughness, and besides, the preparation method is simple and easy, medium in cost, particularly higher in cost performance and suitable for mass preparation.

The invention discloses a waterborne rust conversion polymer emulsion. The waterborne rust conversion polymer emulsion is prepared by the polyreaction of alkenyl halide monomers, monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, alkene phosphate ester monomers, a complexing agent, a compound emulsifying agent, an initiator and deionized water in an inert atmosphere at a pressure of 0.08 to 0.12MPa and a temperature of between 50 and 60 DEG C; and the percentages of dosages of all components on the basis of the total weight of all polyreaction monomers are: 75.0 to 95.0 percent of alkenyl halide monomers, 1.0 to 5.0 percent of alkene phosphate ester monomers, 5.0 to 10.0 percent of monomers of (methyl)acrylic acid and esters of (methyl)acrylic acid, 0.05 to 0.5 percent of initiator, 2 to 4 percent of compound emulsifying agent, 1.0 to 10.0 percent of complexing agent and 100 to 120 percent of deionized water. The coating prepared by the emulsion has the characteristics of good adhesive force, strong covering force, good stability, acid resistance, alkali resistance, salt spray corrosion resistance and long service life, and can be directly coated on the surfaces of metallic materials with a tight rusty layer without the rust removal treatment; and in a film-forming process, no volatile organic compounds are discharged, so that the coating of the invention is a green environmentally protected antirust coating.

The invention discloses an aluminum alloy for an auxiliary frame structure of a transmission tower and a preparation method thereof and relates to the field of aluminum alloy casting, in particular to an aluminum alloy for an auxiliary frame structure of a transmission tower and a preparation method thereof. The invention aims to solve the problem that an existing aluminum alloy is not suitable for manufacturing the auxiliary frame structure of the transmission tower. The aluminum alloy is prepared from the following components in percent by mass: 5-6.1% of Zn, 1.2-1.9% of Mg, 0.1-0.3% of Mn, 0.05-0.25% of Cu, 0.05-0.25% of Zr, 0.02-0.1% of Ti, less than or equal to 0.25% of Fe, less than or equal to 0.15% of Si and the balance of Al and other inevitable impurity elements. The preparation method comprises the following steps: I, material preparation; II, smelting; III, two-stage refining; IV, coordinated deterioration; and V, casting. The preparation method provided by the invention is used for casting a high strength aluminum alloy for the auxiliary frame structure of the transmission tower.