涂膜防腐作用,是使介质不能透入金属表面,阻止化学与电化学腐蚀反应发生,达到保护金属的目的。因此,如何选择配套防腐油漆(包括腻子)是非常重要的。 一、腻子中红丹的作用 客车涂膜一般分为底漆、腻子、面漆三层。其施工顺序是:底漆→找补腻子→头道腻子→二道腻子→三道腻子→四道腻子→五 Coating anti-corrosion effect is to make the medium can not penetrate the metal surface to prevent chemical and electrochemical corrosion reaction occurs to achieve the purpose of protecting the metal. Therefore, how to choose a complete anti-corrosion paint (including putty) is very important. First, the role of putty in red lead Passenger car coating is generally divided into primer, putty, finish three. The construction sequence is: primer → looking for putty → putty head → two putty → three putty → four putty → five