本研究通过对多种缓蚀剂配方的优化筛选,研制了一种对发动机冷却系统多种金属具有全面保护的高性能的有机酸型发动机冷却液配方,尤其在PH<8.5条件下,对焊锡和铸铝的缓蚀性达到了最佳,其试片失重值在±2.5mg/片范围之内。防腐性能评价结果表明:研制冷却液完全满足NB/SH/T0521-2010标准要求,并且低毒、环保、稳定、耐久防腐,适用于车船等。 In this research, a kind of high-performance organic acid type engine coolant formulation with comprehensive protection for various metals in engine cooling system was developed by optimizing screening of various corrosion inhibitor formulations. Especially under the condition of PH <8.5, And the corrosion inhibition of cast aluminum has reached the best, the weight loss of the specimen is within ± 2.5mg / piece. The evaluation results of anticorrosive performance show that the developed coolant completely meets the requirements of NB / SH / T0521-2010 standard, and is low in toxicity, environmental protection, stable and durable and anticorrosive and is suitable for vehicles and ships.