Abstract: According to the structure characteristics of the automobile axle and the special requirements of anticorrosive primer for axle, a two-component alkyd polyurethane coating with high Performance has been prepared by using the self-prepared oil modified hydroxyl- containing alkyd resin and isocyanate-containing polyurethane curing agent. The primer can be directly applied on the surface of the metal substrates that is stained with various oil pollutants and need no complex oil-removing process. The cured film has no crawling and shrinkage cav-ity and show high adhesion, fullness and gloss.

Key words: high adhesion, oil resistance resistance to salt fog, PU anticorrosive primer for axle

摘要： 根据汽车车桥的结构特点和车桥防腐底漆的特殊要求，采用自制的含羟基的油改性醇酸树脂与含异氰酸酯基的固化剂搭配使用，制备了一种高性能双组分醇酸聚氨酯涂料。 该底漆可在沾有各种油污的金属基材表面直接喷涂而无需复杂的除油工序，所得漆膜无缩边、缩孔等缺陷，并具有高附着力、高丰满度和高光泽。

关键词: 高附着力, 抗油污, 耐盐雾, ＰＵ 防腐车桥底漆