推荐回答(3个)
红丹漆和环氧富锌底漆都是防锈性能很好的防锈底漆品种,它们两者之间有什么差别,哪个性能更好呢?下面(冠牌)涂料给您介绍它们的区别:
1、红丹防锈漆主要有醇酸红丹漆及环氧红丹防锈漆两类。醇酸红丹防锈漆,主要用于涂有醇酸漆、氨基漆已经生锈的钢铁,在简单除锈后的翻新工程,配套面漆为醇酸磁漆。红丹毒性较大,在很多国家已经禁止使用。红丹漆的特点是对表面的适应性好,较低的表面处理,也可以取得较好的防腐防锈效果。环氧红丹防锈漆,主要用于涂有环氧底漆、聚氨酯底漆并且已经生效的钢铁,在简单除锈后的翻新工程,配套各类双组份面漆使用。
2、环氧富锌底漆,用于经过喷砂处理至Sa2.5级或动力除锈至St3级的钢铁表面,作为防腐防锈底漆使用。配套面漆为聚氨酯面漆、丙烯酸聚氨酯面漆,氟碳面漆,环氧面漆等。在耐盐雾、防锈效果、漆膜特性方面较普通防锈漆优异很多。
从以上对比可以看出,如果除锈效果很好,建议选用环氧富锌底漆,如果除锈效果差,或者除锈困难,可以根据原漆的类型选用红丹漆。另外,红丹漆毒性较大,如果考虑环保,可以用环氧铁红底漆等代替红丹漆,并且加厚涂层。
红丹作为涂料或者涂装工艺早已经在2003年被强制禁止 ,GB 7691-2003 涂装作业安全管理规程安全管理通则 全文强制
一、对于底材的适应性
红丹防锈漆与环氧富锌漆都是只用于经过表面处理的碳钢、铸铁与普通钢铁设施。
在这方面红丹漆是要优于环氧富锌底漆的。红丹防锈漆对于留于微锈、表面处理不彻底(清洁但留有氧化皮)的表面,具有良好的润湿性与容忍性;而环氧富锌底漆对于表面要求较为严格,要求喷砂至Sa2.5级或动力打磨至St3级。
二、环保性
红丹漆中含有铅,毒性高,在很多国家已禁止使用,不过在富锌底漆没有大量普及前,红丹漆作为一种高表面适应、防锈性能优良的防锈漆,被大量应用,其地位相当于今天的环氧富锌底漆。
环氧富锌底漆环保性能较红丹漆得到大幅度提升,大多厂家提供不含铅的富锌底漆,固含量高,挥发性成分也少。
三、应用范围
目前,红丹漆主要用于翻新,打磨不彻底的钢结构涂装;而富锌底漆大量作为新的钢结构及经过优良表面处理的钢铁设施的防腐底漆使用。
四、防锈功能
红丹漆的防锈功能主要为缓解腐蚀作用,富锌底漆的防锈功能主要为电化学防锈,也包括缓蚀及屏蔽作用。富锌底漆的防锈功能相比红丹漆,在大气环境、潮湿环境、盐雾环境更加强大。
五、配套性能
红丹漆目前的主流品种仍然是醇酸红丹防锈漆,配套醇酸磁漆等醇酸漆系列或醇酸改性的油漆使用;环氧红丹底漆可配套双组份油漆使用。
环氧富锌底漆,主要是配套各种高性能双组份油漆使用,例如富锌底漆+环氧云铁中涂漆+丙烯酸聚氨酯面漆/氟碳面漆是经典的户外耐候型钢结构防腐油漆配套方案。
我公司专业生产防锈漆,厂家直销,有需求可以联系我
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