Study on corrosion inhibition performance of polyaspartic acid-based composite for carbon steel,copper,stainless steel

A kind of high-efficient composite corrosion inhibitor ρ( PASP) ∶ ρ( PAA) ∶ ρ( HPMA) ∶ ρ( BTA) =2. 4 ∶ 1. 6 ∶ 2 ∶ 1 was developed from polyaspartic acid( PASP),polyacrylic acid( PAA),hydrolyzed polymaleic anhydride( HPMA) and benzotriazole( BTA). The performance of corrosion inhibition was evaluated by rotary hanging-piece,electrochemical. The results show that the corrosion inhibiting rates for A3 carbon steel,copper,stainless steel of the corrosion inhibitor are 84. 8%,96. 4% and 99. 2%,respectively. Further dynamic simulated test also indicates that the scale and corrosion inhibitor meet the use demand of circulating cooling water.