HEDP在中央空调酸洗中的缓蚀剂评价

Evaluation of HEDP as Corrosion Inhibitor in Acid Washing of Central Air Conditioning System

通过不同条件下的失重和旋转挂片腐蚀试验,对1-羟基乙叉-1,1-二膦酸（HEDP）的溶锈性能进行了试验,对比评价了几组常用的酸洗缓蚀剂。对HEDP与IS-129缓蚀剂的复配除锈效果研究表明:复配后对除锈效果无不良影响,其腐蚀速率为 1.39/m2·h,从而为复配酸洗剂在中央空调酸洗中的应用提供了依据。

The rust-dissolving performances of HEDP were studied and the several groups of corrosion inhibitors for acid washing were evaluated through weight loss experiments and coupon tests at different conditions. The studies of the compound HEDP and IS-129 corrosion inhibitor indicated that the compound gave better de-rusting performance and the corrosion rate was only 1.39 g/m2· h. This served as the basis for applying the compound corrosion inhibitor for acid washing of central air conditioning system.