Efficient corrosion-resistant antifreezing fluid

Abstract

The invention discloses an efficient corrosion-resistant antifreezing fluid, which is characterized by comprising the following components by weight: 10-15 parts of glycerol, 2-4 parts of phthalic anhydride, 10-15 parts of polysorbate, 0.1-0.5 part of potassium nitrate, 0.01-0.05 part of a silicate stabilizer, 1-2 parts of a non-ionic surface active agent, 5-8 parts of epoxy resin, 1-4 parts of borax and the balance of ultra pure water. A high-molecular polymer salt and metal ions can form a high-molecular polymerization membrane for covering the metal surface; and rare-earth salts generate synergism with the corrosion inhibitors to keep the protection film on the metal surface intact, thereby inhibiting metal corrosion.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and protection, and in particular relates to a high-efficiency corrosion-resistant antifreeze liquid. Background technique [0002] At present, there are many patent applications for antifreeze in various countries in the world. The main components are ethylene glycol and water, and anti-corrosion agents, anti-rust agents, stabilizers, color dyes are added, and some anti-seepage agents are also added, such as Chinese patent 201110252501.5, But the potassium nitrite contained in the corrosion inhibitor component is harmful to human health. As far as the corrosion inhibition effect on carbon steel is concerned, chromate, especially chromate combined with polyphosphate and zinc salt, is still the most ideal corrosion inhibitor. The United States is still using it to a considerable extent. However, chromate is toxic and pollutes the environment. Therefore, it has been gradually replaced by ...