Binary Inhibitory Anti-Rust Paint

Valery Trusov,Rustam Khodzhaev,А Г Иванова ,O A Zagrebelnyy ,О А Шилова ,L N Krasil’nikova ,O S Lezova ,Tatiana Belokon

doi:10.1051/e3sconf/202122505006

Abstract

A combined approach to paint was used to increase the effectiveness of anti-corrosion protection was used. In particular, passive insulating coating materials was modified with active additives. A water-soluble anodic inhibitor of atmospheric corrosion was encapsulated in a phosphate conversion coating NOTECH. As a result, the corrosion under a layer of paint primer was suppressed. It is important that phosphating does not create a layer like paint. So, such an approach is universal and compatible with most known types of paint coatings and can be combined with temporary protection (preservation). The second paint layer of the coating contained a water-oil-soluble corrosion inhibitor of the group “M”, namely: N-M-1. It is adduct of natural fat vegetable acids and cyclohexylamine. The data of corrosion tests and polarization curves are presented, which confirm the high protective properties of the proposed binary inhibitory anti-rust paint.

Highlights

It is well known that phosphating is one of the best methods of chemical preparation of surfaces for applying various coatings
The inert matrix of inorganic phosphates can be modified with various active additives [1, 2]
Water-based rust converter NOTECH derived on phosphoric acid and acidic zinc phosphates with the addition of water-soluble inorganic inhibitors-oxidizers of the anode type is known and used in practice [3]

Summary

Introduction

It is well known that phosphating is one of the best methods of chemical preparation of surfaces for applying various coatings. A protective layer of water-insoluble phosphates is formed on the metal surface, which, in combination with layers paint provides a significant increase in the corrosion resistance of the coating. Water-based rust converter NOTECH derived on phosphoric acid and acidic zinc phosphates with the addition of water-soluble inorganic inhibitors-oxidizers of the anode type is known and used in practice [3]. Due to their passivating action, the rate of submembrane corrosion under the paint layer is reduced. Phosphating, as independent protection, is rarely used, the conversion coating acts as a sublayer for the main permanent or temporary coating

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