Type 70 rust paint is an improvement and development of a conversion rust paint. It comes in a single package and can be placed in a closed container for many years without deterioration. The use of this coating can greatly improve work efficiency and reduce labor intensity. It has the following functions.
(1) Rust
Type 70 paint can not only isolate the steel surface from the surrounding medium, but also convert a certain amount of rust into pigment in the paint, thus saving the workload of rust removal.
(2) drainage
Type 70 paint contains both non-polar polymer compounds and polar hydrophilic substances, which can penetrate through a thin water film and adhere to the surface of the object, and then drain part of the water when painting, and the other Part of the water evaporates together with the solvent during the curing process of the paint mold, which provides convenience for construction in a humid environment.
(3) Slowness
Due to the addition of certain additives in the 70 type paint, it can inhibit the process of electrochemical corrosion i1li and play a protective role.
(4) Primer
Type 70 paint has a lower allowable viscosity during painting and construction, so the coating film is thinner and has more holes. Alkyd resin paint, asphalt paint, ring resin paint, etc.) are used together to complement each other. In addition, when painting on thick rust, in order to make the rust conversion more effective, you can also paint again 25 minutes after the 70-type paint is applied once, and it has not yet cured, so as to improve the corrosion resistance of the paint. Rust ability.
