35results about How to "Play the role of corrosion inhibition" patented technology

The invention relates to a high-efficiency grey water dispersing agent which is a composition consisting of 40-60 percent of acrylic acid-2-polyscrylide-2-methyl acrylsulfonate, 15-35 percent of 2-phosphate-1,2,4-tricarboxylic acid butane, 5-25 percent of amino trimethylene phosphonic acid, 5-15 percent of hydroxyethylidene-1,1-diphosphonic acid and 5-15 percent of hydrolytic polymaleic anhydride. The dispersing agent is stable in property under the conditions of 40MPa and 250 DEG C, has a high dispersing capacity at the high temperature of 300 DEG C, has a good dispersing function on high-basicity, high-hardness, high-PH value and high ash content and high concentration multiple under the required high-concentration times in a water-coal-slurry pressurization and gasification device, can effectively delay the scale forming tendency and is applicable to a circulating cooling water system in industries such as power, metallurgy and papermaking. The addition in a water system is determined according to the water quality and working conditions, and the amount is 50-80mg / l according to the flow sum of a low-pressure grey water pump and a high-pressure grey water pump.

The invention discloses a selective high-molecular fracture catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: filling water into a reaction kettle and increasing the temperature to 50 DEG C; adding an organic phosphate chelating agent in to the reaction kettle and reacting for 1 h; adding a reducing agent and reacting for 30 min; finally, adding a boron removal catalyst, increasing the reaction temperature to 50 to 90 DEG C, and reacting for 3 h. The selective high-molecular fracture catalyst provided by the invention is mainly applied to gel breakage of fracturing fluid in an oil field, and the usage amount is 0.05 to 0.1% of the total mass of the fracturing fluid. The selective high-molecular fracture catalyst has the beneficial effects that gel can be broken radically, the price is reasonable, and the catalyst does not have corrosivity and is free from influence of a great amount of co-existence salt; all ingredients contained in the product supplement one another, the boron removal catalyst lowers the activation energy of boron to ensure that the fracturing fluid is unstable in boron cross-linking performance and is degraded unceasingly so as to achieve the effects of hydration and gel breakage at last, the reducing agent can lower activation energy and serves as a low-temperature activating agent to prevent oxygen corrosion, and the organic phosphate chelating agent can prevent scaled and treated water from being compatible with follow-up water.

The invention relates to coating technology, in particular to a non-toxic polyaniline modified anti-corrosive coating and a preparation method thereof to solve the problems that that prior antirust pigment has poor corrosion resistance, and the coating is matched with harmful lead-containing and chromate-containing pigment in the manufacturing process. The non-toxic polyaniline modified anti-corrosive coating comprises a film forming matter, polyaniline modified antirust pigment, and the like. A polyaniline coating layer is formed on the surface of the antirust pigment by an oxidative polymerization method; the antirust pigment after treatment has passivating effect on metal; and a phytic coating layer on the surface of the antirust pigment also has corrosion inhibiting effect on the metal. The non-toxic polyaniline modified anti-corrosive coating has strong corrosion resistance and permeability resistance, and can be applied to anti-corrosive projects such as petrochemical equipment,pipelines, offshore oil platforms, wharf facilities, shipping and the like.

The invention relates to coating technology, in particular to an environment-friendly polyaniline modified aluminium powder anti-corrosive coating and a preparation method thereof to solve the problem that the prior aluminium powder coating has poor corrosion resistance, and is matched with harmful lead-containing and chromate-containing pigment in the manufacturing process. The environment-friendly polyaniline modified aluminium powder anti-corrosive coating comprises a film forming matter, polyaniline modified aluminium powder and the like. A polyaniline coating layer is formed on the surface of the aluminium powder by an oxidative polymerization method; the treated aluminium powder has passivating effect on metal; and a phytic coating layer on the surface of the aluminium powder also has corrosion inhibiting effect on the metal. The environment-friendly polyaniline modified aluminium powder anti-corrosive coating has strong corrosion resistance and permeability resistance, and can be applied to anti-corrosive projects such as petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, shipping and the like.

The invention relates to coating technology, in particular to a polyester heavy-duty anticorrosive coating with polyaniline-modified glass flakes, and a preparation method thereof, which solves the problem that the surfaces of steel or other metal substrates need to be coated with primer to increase anti-corrosion performance and prevent coatings and substrate interfaces from being corroded in the construction of most of the prior glass-flake anticorrosive coatings. The polyester heavy-duty anticorrosive coating with polyaniline-modified glass flakes comprises unsaturated polyester resin, thepolyaniline-modified glass flakes, amine curing agent and the like. As polyaniline coating layers are formed on the surfaces of the glass flakes by an oxidative polymerization method, the treated glass flakes have the effect of passivating metal, and phytic-acid coating layers on the surfaces of the glass flakes play a role in inhibiting corrosion of metal. The polyester heavy-duty anticorrosive coating with polyaniline-modified glass flakes has strong corrosion resistance and permeation resistance, can be applied to heavy-duty engineering in the fields of petrochemical industry, wharf facilities, ships and the like, and is particularly applicable to the protection of spray splash areas and tidal range areas.

The invention discloses a zinc electroplating solution for the surface of a zinc alloy workpiece with a blind hole. The zinc electroplating solution has an excellent deep plating performance for the blind hole and can prevent zinc alloy from being corroded. The zinc electroplating solution comprises the following ingredients: ZnCl2, KCl, H3BO3, surface active agent A and water in balancing amount.

The invention discloses a corrosion-resistant and anti-rust paint and a preparation method thereof, belonging to the field of paints. In the present invention, the anti-rust active material is added into the curing agent according to the mass ratio of 2~5:10~20, stirred and mixed at 50~60°C to obtain the mixed matrix, calculated in parts by mass, taking 200~300 parts of the mixed matrix, 30 ~50 parts of preservative additives, 5~10 parts of titanium dioxide, 2~7 parts of talc, 8~15 parts of lecithin, 8~13 parts of hydrogenated castor oil, 7~12 parts of glass flakes, 3~6 parts of γ‑ Aminopropyltriethoxysilane, 80~150 parts of water, stirred and mixed at 60~70°C for 40~50min to obtain corrosion-resistant and antirust paint. The invention solves the problems of poor adhesion and poor corrosion resistance of existing antirust paints.

The invention relates to coating technology, in particular to a polyaniline modified glass flake heavy-duty anti-corrosive coating and a preparation method thereof to solve the problems that when the prior glass flake anti-corrosive coatings are constructed, most of the glass flake anti-corrosive coatings require to coat primer on the surface of steel or other metal matrix to improve the corrosion resistance and prevent corrosion between the coat and the interface of the matrix, and the like. The polyaniline modified glass flake heavy-duty anti-corrosive coating comprises epoxy resin, a polyaniline modified glass flake, an amine curing agent and the like. A polyaniline coating layer is formed on the surface of the glass flake by an oxidative polymerization method; the glass flake after the treatment has the passivating effect on metal; and a phytic coating layer on the surface of the glass flake also has the corrosion inhibiting effect on the metal. The polyaniline modified glass flake heavy-duty anti-corrosive coating has strong corrosion resistance and permeability resistance, can be applied to heavy-duty anti-corrosive projects such as petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, shipping and the like, and is particularly suitable for protecting wave splashing zones and tidal difference zones.

The invention relates to a method for building a super-hydrophobic coating on a metal surface. The method comprises the steps that metal base materials are cleaned in a lye solution at 50-70 DEG C andan acid solution at 50-70 DEG C to remove grease on the surface; chemical etching treatment is carried out on the metal surface by using an aqueous hydrochloric acid solution at room temperature for5-15 minutes; and hydrophobic substance with low-surface-energy is assembled onto the metal surface after the chemical etching treatment, and then solidification treatment is carried out. According tothe method for building the super-hydrophobic coating on the metal surface, the super-hydrophobic coating is built on the metal surface, the used preparation method has no special restrictions on theshape of metal, and coating can be carried out on the surface of a test piece with complicated shape. The method does not require special equipment, has simple process, easy operation and mild condition, is especially suitable for metal parts with irregular shape such as heat exchanger fins, and is easy for industrialized mass production. After the gained coating is placed for a long period, preferable super-hydrophobic performance is still maintained.