一、前言 日本国营铁路目前约有5,000孔钢梁(总重约100万吨,重新油漆面积约为1,400万米~2)为防止由锈蚀引起的钢梁老化,每年维修养护用于重新油漆的工程费约30亿日元。以前用于钢梁防锈的油漆种类主要有两种,一种是属于铅类防锈漆的富油性邻苯二甲酸树脂漆(用于钢梁外表面),一种是焦油环氧树脂漆(用于钢梁内表面)。对用于具有严重腐蚀环境的油漆 I. Preface At present, there are about 5,000 holes of steel beams in Japan’s state-owned railway (total weight about 1 million tons and re-painting area of ​​about 14 million meters ~ 2). In order to prevent the aging of steel beams caused by rusting, the annual repair and maintenance for repainting Construction costs about 30 billion yen. There are two main types of paint used to prevent rusting of steel beams, one is oil-rich phthalate resin paint (used for the outer surface of steel beams) which belongs to lead type anti-rust paint, and the other is tar epoxy resin paint (For steel beam inner surface). For use in paints with severe corrosive environments