52results about How to "Corrosion-inhibiting" patented technology

The invention discloses a phosphorus-free composite scale and corrosion inhibitor and application thereof, and a treating method for circulating cooling water, belonging to the field of treatment of circulating cooling water. The phosphorus-free composite scale and corrosion inhibitor contains sodium carboxymethyl inulin, a cyclodextrin derivative and a copolymer, wherein the copolymer contains a constitutional unit provided by dimethyldiallylammonium chloride, a constitutional unit provided by C3-10 unsaturated carboxylic acid and a constitutional unit provided by C4-10 acrylate. The invention also provides application of the phosphorus-free composite scale and corrosion inhibitor to treatment of circulating cooling water. The treating method for circulating cooling water comprises a step of adding the phosphorus-free composite scale and corrosion inhibitor into circulating cooling water. The phosphorus-free composite scale and corrosion inhibitor provided by the invention presents good comprehensive scale and corrosion inhibition performance; and when the phosphorus-free composite scale and corrosion inhibitor is applied to treatment of circulating cooling water, requirements of circulating cooling water on scale inhibition and corrosion mitigation are met, and environmental problems caused by conventional phosphorus-containing reagents can be avoided.

The invention discloses O-acetamide chitosan Schiff-base and a preparation method thereof. The preparation method includes: benzaldehyde chitosan Schiff-base is allowed to have nucleophilic substitution reaction with chloroacetamide so as to prepare the O-acetamide chitosan Schiff-base. The O-acetamide chitosan Schiff-base has the advantages that the O-acetamide chitosan Schiff-base is definite in modification position, high in purity and good in flocculation and sterilizing effect, and chitosan amino protection is achieved through the Schiff-base reaction to allow hydroxyl to have a fixed-position modification effect.

The invention discloses a phosphorus-free composite scale and corrosion inhibitor and application thereof, and a treating method for circulating cooling water, belonging to the field of treatment of circulating cooling water. The phosphorus-free composite scale and corrosion inhibitor contains sodium carboxymethyl inulin, a cyclodextrin derivative and a copolymer, wherein the copolymer contains a constitutional unit provided by a thiourea derivative as shown in a formula (I), a constitutional unit provided by C3-10 unsaturated carboxylic acid and a constitutional unit provided by C2-10 unsaturated sulfonic acid. The invention also provides application of the phosphorus-free composite scale and corrosion inhibitor to treatment of circulating cooling water. The treating method for circulating cooling water comprises a step of adding the phosphorus-free composite scale and corrosion inhibitor into circulating cooling water. The phosphorus-free composite scale and corrosion inhibitor provided by the invention presents good comprehensive scale and corrosion inhibition performance; and when the phosphorus-free composite scale and corrosion inhibitor is applied to treatment of circulating cooling water, requirements of circulating cooling water on scale inhibition and corrosion mitigation are met, and environmental problems caused by conventional phosphorus-containing reagents can be avoided.

The invention provides a high-stability 84 disinfectant with corrosion inhibition effect, which comprises the following components in parts by weight: sodium hypochlorite solution 5%-50%, acid-base regulator 0.5%-5%, stabilizer 1%-10% , 5% to 20% of corrosion inhibitor, 0.1% to 2% of complexing agent, and the balance of water. The invention not only makes the disinfectant have a certain corrosion inhibition, solves the problem of high corrosion of the disinfectant, but also further improves the stability and disinfection and sterilization ability of the disinfectant, and can quickly kill various common bacteria and viruses; The problem that the corrosion inhibition, stability and bactericidal properties of the existing sodium hypochlorite disinfectant cannot be balanced.

The invention discloses high-dispersion modified graphene oxide, a preparation method thereof and anticorrosive paint prepared from high-dispersion modified graphene oxide. The method comprises the following steps: 3-aminobenzeneboronic acid modified graphene oxide is prepared from graphene oxide and 3-aminobenzeneboronic acid through a reaction; high-dispersion modified graphene oxide is preparedfrom triglycidyl isocyanurate and 3-aminobenzeneboronic acid modified graphene oxide through a reaction. Modified graphene oxide has good stability and high dispersion. High-dispersion modified graphene oxide is further uniformly dispersed with matrix resin, a leveling agent, an antifoaming agent, a dispersing agent, a coalescing agent and a diluent, and the anticorrosive paint is obtained and isgood in anticorrosive performance and long in service life. The process is simple, environmentally friendly, efficient and suitable for industrial production.