施工环氧砂浆地坪中常会遇到砂浆不上色，配方中的颜料用量很大，不能够使漆膜呈现所需要的颜色，甚至根本不能够显现彩色。造成这一问题的原因是砂浆中产生颜料迁移现象。迁移性是指彩色漆膜中的颜料，从其所在的漆膜中转移到漆膜表面或与之接触的另一物质表面的现象。颜料的迁移往往造成漆膜渗色或浮色。颜料迁移性的大小主要与漆膜性质、颜料种类和用量、颜料在涂膜中所处的物理化学状态及涂膜所处的环境等因素有关。一般来讲，颜料迁移性越大，漆膜耐迁移性差。耐迁移性是彩色漆膜的一项重要性能指标，如果漆膜耐迁移性差，则其在使用过程中会发生色变，从而影响涂装效果，如果严重时还会损坏漆膜的物理化学性能。

In the construction of epoxy mortar floors, it is often encountered that the mortar is not colorful, and the amount of pigment in the formulation is too large to make the paint film present the required color, or even can not show the color at all. The cause of this problem is the phenomenon of pigment transfer in mortar. Migration refers to the transfer of pigments from the paint film to the surface of the paint film or another material in contact with it. The migration of pigment often results in color leakage or floating color. The migration of pigments is mainly related to the properties of the film, the kinds and dosage of the pigments, the physical and chemical state of the pigments in the film and the environment of the film. Generally speaking, the greater migration of pigment, the poor migration resistance of paint film. The migration resistance is an important performance index of color film. If the migration resistance of the film is poor, it will change color in the course of use, thus affecting the coating effect. If it is serious, it will damage the physical and chemical properties of the film.

因为环氧砂浆地坪中石英砂等颗粒粗大，溶剂的存在又能够使油漆中的颜料的流动性很大，导致颜料在未固化的漆膜中易于迁移。颜料向基层迁移，使漆膜表面没有颜料分布，因而漆膜难于上色。解决这一问题的方法是增加涂料中粉料的用量。但过多地增加粉料，可能会对油漆的流动性和漆膜的物理力学性能产生不利影响。若在合理的范围内增加粉料的用量仍不能解决，则可以通过增加钛白粉的方法解决，在油漆中适量地添加钛白粉就能够很好的消除环氧砂浆地坪在施工中颜料迁移现象，达到所需要的配色要求。

Because the quartz sand and other particles in the epoxy mortar floor are coarse, the solvent can make the fluidity of the pigment in the paint very large, resulting in the migration of the pigment in the uncured film. The pigment moves to the base layer, so that there is no pigment distribution on the surface of the paint film, so the paint film is difficult to color. The solution to this problem is to increase the amount of powder used in the coating. However, excessive addition of powders may adversely affect the fluidity of the paint and the physical and mechanical properties of the film. If the amount of titanium dioxide can not be increased within a reasonable range, it can be solved by adding titanium dioxide. Adding titanium dioxide properly in the paint can eliminate the migration of pigment in the construction of epoxy mortar floor, and achieve the required color matching requirements.