Environment-friendly, thermal-insulating and corrosion-resistant coating for metal and preparation method of coating

Abstract

The invention discloses an environment-friendly, thermal-insulating and corrosion-resistant coating for metal. The environment-friendly, thermal-insulating and corrosion-resistant coating is characterized by being prepared from raw materials in parts by weight as follows: 60-90 parts of acrylic acid modified epoxy resin, 3-8 parts of modified polyuria, 20-35 parts of a composite thermal insulation agent, 10-20 parts of nano hydroxyapatite powder, 3-6 parts of a wet dispersant, 8-15 parts of gas-phase aluminum oxide, 2-10 parts of polyacrylate type thickeners, 1-5 parts of lower-molecular polyethylene wax, 1-2 parts of zinc dihydrogen phosphate with the concentration being 1.5%, 2-8 parts of propylene glycol, 0.5-1 part of mercaptobenzothiazole, 3-20 parts of other aids and 20-30 parts of water. The invention also discloses a preparation method of the environment-friendly, thermal-insulating and corrosion-resistant coating for the metal. The coating prepared according to the raw material formula with the preparation method has good metal corrosion resistance, environmental protection performance and thermal insulation performance.

Description

technical field [0001] The invention relates to a paint, in particular to a metal heat-insulating and anti-corrosion paint with excellent environmental protection and a preparation method thereof. Background technique [0002] Corrosion of metals is a phenomenon in which metals are damaged by electrochemical or chemical effects of environmental media. Metal corrosion pervades all areas of the national economy and has brought huge losses to the national economy. In industrially developed countries, the direct economic loss caused by metal corrosion accounts for 1% to 4% of the total output value of the national economy, and the annual rusted steel due to corrosion accounts for about 20% of the total output, and about 30% of the equipment is due to metal corrosion. Corroded and scrapped. In China, the annual economic loss due to metal corrosion accounts for 4% of the gross national product. Because of this, metal anti-corrosion coatings with excellent rust resistance and ch...

AI Technical Summary

Problems solved by technology

Due to the wide use of metal products, many metal products have been subjected to friction tests for a long time. If anti-corrosion coatings are not coated, the service life of metal products will be greatly reduced due to metal corrosion and friction. Coating anti-corrosion coatings can reduce corrosion, but the existing The environmental protection of existing metal anti-corrosion coatings is poor, and long-term and large-scale use is likely to cause a great impact on the surrounding environment, and the existing metal anti-corrosion coatings have poor heat insulation performance. Metal products often bring safety hazards due to high temperature, and commonly used water showers or air-conditioning cooling will cause a lot of waste of energy