ABSTRACT

A self-stratifying coating contains at least two resins of different nature, which spontaneously stratify after applying on a substrate. Various self-stratifying systems are reported in the literature, however self-starting coatings, with three layers containing anti-corrosive pigments, and their properties are rarely discussed. In this paper, self-stratifying coatings from epoxy resin and fluorinated ethylene-vinyl ether containing three pigments i.e. zinc dust, micaceous iron oxide, and titanium dioxide have cooperated in formulations. The viscosity of the total mixture has a great effect on stratification and pigment locations. Xylene as a solvent has been used for these formulations. The results show the ratio of binders and different pigment percentages in formulations has not a great effect on the stratification and location of pigments. In addition, the type of solvents with different evaporation rates does not have an effect on stratification and location of pigments in this system.

摘要

自分层涂层包含至少两种不同性质的树脂，这些树脂在施涂到基材上后会自发分层。文献中报道了各种自分层体系，然而，具有三层包含抗腐蚀颜料的自启动涂层，很少讨论其性能。在本文中，由环氧树脂和含三种颜料（即锌粉，云母氧化铁和二氧化钛）的氟化乙烯-乙烯基醚组成的自分层涂料已在配方中配合使用。总混合物的粘度对分层和颜料位置有很大的影响。对于这些制剂，已使用二甲苯作为溶剂。结果表明，配方中粘合剂的比例和不同的颜料百分比对颜料的分层和位置影响不大。