分散剂顾名思义，就是把各种粉体合理地分散在溶剂中，通过一定的电荷排斥原理或高分子位阻效应，使各种固体很稳定地悬浮在溶剂（或分散液）中。
Dispersant, as the name suggests, is to distribute all kinds of powders reasonably in solvents. Through a certain charge exclusion principle or polymer steric hindrance effect, various solids are suspended in solvents (or dispersions).
在涂料生产过程中，颜料分散是一个很主要的生产环节，它直接关系到涂料的储存，施工，外观以及漆膜的性能等，所以合理地选择分散剂就是一个很重要的生产环节。但涂料浆体分散的好坏不光和分散剂有关系，和涂料配方的制定以及原料的选择都有关系。
In the production process of coatings, pigment dispersion is a very important production link. It is directly related to the storage, construction, appearance and film performance of coatings, so reasonable selection of dispersants is an important production link. But the dispersion of coating paste is not only related to dispersant, but also to formulation of coating formulation and selection of raw materials.