摘要
将辐射固化技术用于对达克罗涂层的固化,结果表明,该固化技术可以得到与普通烘烤固化具有相同耐蚀性能的达克罗涂层,并可以将固化时间缩短2/3.辐射固化在一定程度上抑制了达克罗涂层的阴极极化过程。初步确定达克罗涂层辐射固化的最佳工艺为:固化温度290℃~310℃,固化时间7 min^8 min.
As an antl-corrosion coating, Dacromet, consisting principally of zinc and aluminum flakes together with chromate matrix, was widely used in many fields, such as automobiles, because of its excellent corrosion protectiveness for steel or other metals and its efficient pollution-free mode of application. But the conventional technology, through heat treating by using common muffle furnace, for Dacromet curing is a technology of low efficiency and high energy consumsion because its lower heating rate and longer curing time. Irradiation curing technology is a method of direct heat transfer by radiation, which has many advantages, of high heating efficiency and heating rate, which can shorten the curing time then enhance the curing efficiency. In this paper, Dacromet coating was cured by using the irradiation curing technology and the common muffle furnace respectively. The results showed that the new process could shorten the curing time for Dacromet about 2/3 without any degradation of its anticorrosion performance in comparision with the conventional ones. The samples cured by the irradiation technology showed a lower polarization current of the cathode region in potentiodynamic polarization curves. The optimal process is：curlng for 7 rain-8 min. at 290℃ -310℃. So this study showed a feasibility of application of irradiation technology to the fast curing of Dacromet coating.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2006年第2期112-114,共3页
Corrosion Science and Protection Technology
关键词
辐射固化
达克罗涂层
耐性性能
Dacromet coating
irradiation curing
anti-corrosion performance
