Salt-fog-resistant phosphate modified acrylic waterborne antirust coating for building scaffold

Abstract

The invention discloses a salt-fog-resistant phosphate modified acrylic waterborne antirust coating for a building scaffold. The salt-fog-resistant phosphate modified acrylic waterborne antirust coating is prepared from the following raw materials in parts by weight: 35-60 parts of salt-fog-resistant phosphate modified acrylic core-shell emulsion, 2-8 parts of cosolvent, 10-15 parts of cobalt naphthenate, 10-15 parts of lead chromate, 5-10 parts of iron laterite, 2-5 parts of strontium chromate, 1-3 parts of rosin, 2-9 parts of ammonium metaborate, 0.5-0.9 part of chlorinated paraffin, 0.3-0.6part of cellulose acetate, 0.2-1.2 parts of dibutyl phthalate, 0.2-1.5 parts of substrate modifier, 0.5-6 parts of auxiliaries and 12-35 parts of deionized water. According to the antirust coating disclosed by the invention, the adhesive force and compactness between a film and a substrate are enhanced, so that water molecules, chloride ions and sodium ions are effectively isolated from enteringbetween substrates, the adhesive force, water resistance and anti-flash rusting property of the film are improved in a wet environment, and the salt-fog-resistant phosphate modified acrylic waterborneantirust coating has good adhesive force, water resistance, salt fog resistance, anti-flash rusting property, acid and alkali resistance and corrosion resistance.

Description

technical field [0001] The technical field of the scaffold coating of the present invention, more specifically, relates to a salt-spray-resistant phosphate-modified acrylic water-based antirust coating for building scaffolds. Background technique [0002] Coating is an indispensable material for protecting infrastructure in daily life. It is widely used in buildings, various hardware, decoration of industrial products, machinery, vehicles, ships, wood and other fields. Every year in China, a large number of metals are damaged due to corrosion, losing their original performance, causing a large number of metals to be scrapped, and causing huge economic losses. People have studied various measures to prevent and inhibit the corrosion of metals, among which coating anti-rust is an effective method. [0003] At present, anti-corrosion coatings are still mainly solvent-based, but the volatilization of solvents during the film formation of such coatings has caused environmental p...

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Problems solved by technology

[0003] At present, anti-corrosion coatings are still mainly solvent-based, but the volatilization of solvents during the film formation of such coatings has caused environmental pollution and human health hazards, and most of the solvents used in coatings come from non-renewable petroleum energy, which leads to The waste of petroleum resources, with the enhancement of people's awareness of safety and non-toxicity, especially the strict requirements on the content of volatile organic compounds in coating systems in various countries' safety and non-toxic laws and regulations, has promoted the development of low-pollution coatings represented by water-based coatings. Compared with solvent-based coatings, water-based coatings contain no or very little volatile organic compounds (VOC), which have multiple advantages such as safety and environmental protection, flexible construction, and easy access to diluents.