33results about How to "Meet anti-rust requirements" patented technology

The invention relates to a thin and long and flexible volatile rust preventive material, in particular to a use of volatile rust preventive paper. The volatile rust preventive paper is used as a paper rope which has rigidity and can be used for being placed into a thin and long tubular inner cavity and preventing rust for tubular devices. The novel rope-shaped volatile rust preventive material can meet a rust preventing protecting requirement for small-diameter metal pipe inner cavity. The volatile rust preventive material has certain flexibility and rigidity, can be inserted into a pipe inner cavity easily, and is suitable for bent tubular metal products, wide in application range and convenient to operate.

The invention relates to a water base rust preventive for a filter, which comprises 50 to 60 weight parts of hydroxyalkyl starch, 40 to 50 weight parts of acetic ester starch, 80 to 100 weight parts of aqueous fluorocarbon emulsion, 300 to 350 weight parts of water, 55 to 75 weight parts of polyfluortetraethylene emulsion, 8 to 10 weight parts of micron or nanometer zinc powder, 40 to 50 weight parts of isopropanol and 20 to 30 weight parts of acetone, wherein the hydroxyalkyl starch is ethoxyl starch or hydroxypropyl starch; the aqueous fluorocarbon emulsion is multipolymer of fluorothene and an oxhydryl vinyl ether, the weight percentage concentration of fluorin is from 8 percent to 11.5 percent, and a main chain comprises fluorin atoms. A preparation method comprises traditional methods of mixing, heating stirring and ultrasonic dispersion. The rust preventive has the advantages of good antirust effect, high temperature resistance, favorable adhesive attraction to polyester powder coatings, and the like and can satisfy the antirust requirements of a metal outer casing and a treaded cover plate of the filter. The preparation method is technically simple and uses less equipment.

The oil-free anti-rust and blackening agent and its preparation method and application relate to the technical field of metal surface treatment, wherein the above-mentioned oil-free anti-rust and blackening agent comprises the following components: 1-20 parts by weight of copper chloride, tungsten Potassium acid 2-30 parts by weight, ammonium thiosulfate 1-15 parts by weight, water-based epoxy modified acrylic resin dispersion 50-300 parts by weight, water-based polyaniline dispersion 5-50 parts by weight, citric acid 5-50 parts by weight 2-50 parts by weight of oxalic acid, 0.5-10 parts by weight of disodium hydroxyethylidene diphosphonate and appropriate amount of deionized water. After using the oil-free antirust blackening agent for blackening treatment, it can meet the antirust performance requirements in most cases even without oil immersion treatment.

The invention discloses an antirust fluid for an inner cavity of a metal part. The anti-rust fluid is prepared from the following raw materials in parts by weight: 3-4 parts of critic acid, 2-3 parts of triethanolamine, 2-3 parts of petroleum sodium sulfonate, 1-2 parts of fatty alcohol-polyoxyethylene ether, 1-2 parts of sodium molybdate, 30-34 parts of ethanol, 2-3 parts of etidronic acid, 3-4 parts of 2-butoxy-ethanol, 1-2 parts of isopropanol, 10-12 parts of ethoxylated trimethylolpropane triacrylate, 1-2 parts of ethylene diamine tetraacetic acid (EDTA) disodium, 4-5 parts of assistant and 300 parts of water. A film can be formed on the metal surface by using polymer resin and a chelating agent, so as to play air-isolation and anti-oxidation roles; meanwhile, an antirust agent can be firmly adhered, so that the anti-rust effect is long; the ingredients such as volatile acid, heavy metal ions, sodium nitrite and the like do not exist, so that the antirust fluid is free of residual rust slag, free of pollution, low in cost and good in economic benefits, and can be applied to rust control of inner cavity parts of a car of cast iron and steel materials in batches; the anti-rust requirements of the cast iron or steel parts of the car are met.