Polystyrene and cornstarch anti-corrosive coatings on steel

Abstract This work aims to evaluate the performance of anticorrosive thermoplastic coatings in cold rolled steel sheets. Two types of thermoplastic coatings were studied: polystyrene (PS) and cornstarch. These types of coatings are applied for protection against corrosion during transport and storage of steel plates after cold rolling until delivery to stamping or other processing. The good performance for these coatings is suitably standardized to ABNT NBR 5915-2: 2013 and ASTM A1008 / A1008M-2016. According to corrosion tests carried out in saline chamber, the coatings were satisfactory in different degrees of guarantee of corrosion protection on ASTM 1080 steel, in accordance with standards mentioned.

摘要：本研究旨在评估冷轧钢板用防腐热塑性涂料的性能。本次研究共考察两类热塑性涂料：聚苯乙烯（Polystyrene，PS）与玉米淀粉基涂料。此类涂料主要用于冷轧钢板完成冷轧后至交付冲压或其他加工工序前的运输与存储阶段的防腐防护。该类涂料的性能合格判定需符合ABNT NBR 5915-2:2013与ASTM A1008 / A1008M-2016两项标准。根据盐雾腐蚀舱内开展的腐蚀试验结果，在符合前述标准的前提下，上述涂料对ASTM 1080钢材均展现出不同程度的可靠防腐保护效果。