分散剂的作用

The effect of dispersant

1、提升光泽，增加流平效果有试验表明，完全相同的配方，采用不同的分散剂，得出的漆膜光泽会有明显的差别。例如，在黑色卷材涂料体系中，不同的3种分散剂制得的涂料涂膜的20°光泽分别是69.7%、81.5%、77.1%。如果所采用的分散剂不恰当，颜色絮凝后变粗，其对光泽所起的作用类似于消光粉，自然会影响光泽。

1, increase gloss and increase leveling effect. Experiments show that the varnish of the lacquer film will be significantly different from the same formula with different dispersants. For example, in the black coiling system, the 20 degree luster of the coating made by 3 different dispersants is 69.7%, 81.5%, and 77.1%, respectively. If the dispersant is not appropriate, the color is thickened after the color flocculation, and its effect on the luster is similar to the light powder, and it will naturally affect the luster.

2、防止浮色发花防止浮色发花，是大家所熟知的分散剂的作用之一。要防止浮色发花，应该选用合适的分散剂，无论是罐内浮色发花还是漆膜的浮色发花，都可以得到改善或消除。还有些分散剂，是受控絮凝类的分散剂，分子链中含有一些羧基基团，与颜料亲和的同时，还会互相形成氢键，从而使颜料粒子稳定，达到预防浮色发花的效果。

2, to prevent the floating to prevent floating, is one of the dispersing agent known as. To prevent the floating, should choose appropriate dispersant, whether it is in the tank or floating film floating, can be improved or eliminated. Some dispersant and dispersant is controlled flocculation the molecular chain containing some carboxyl groups, and at the same time, dye affinity, but also with each other to form hydrogen bonds, so that the pigment is stable, to prevent the floating effect.

3、提高着色力颜料分散和稳定得更好，其着色力会明显加强。

3. To improve the dispersion and stability of the pigments, the coloring force will be obviously strengthened.

4、降低粘度，增加颜料载入量采用合适的分散剂，所得的色浆黏度会明显降低。这样可以增加颜料的载入量，提高生产效率。

4, the viscosity of the pulp will be reduced obviously by reducing the viscosity and adding the suitable dispersing agent. This can increase the load of the pigment and improve the production efficiency.

5、减少絮凝，增加施工性和使用性许多人在评估分散剂时，都会做指研试验。如果分散剂搭配不恰当，指研的区域与未指研的区域会产生明显的色差，絮凝后的颜料着色力会下降，这给调色及涂料施工都带来困难。采用流板试验，也能观察到色浆的絮凝与否。

5, reduce flocculation, increase the construction and use of many people in the evaluation of dispersant, will do research and research. If the dispersant matching is not proper, the area of finger research area and the area without reference will produce obvious chromatic aberration, and the coloring power of pigments will be decreased after flocculation, which will bring difficulties for color matching and coating construction. The flow plate test can also be used to observe the flocculation of the color pulp.

6、防止返粗，增加贮存稳定性时，如果选用不合适的分散剂，色浆发生返粗或因絮凝而产生颜色的变化，都不是大家所希望的。除树脂体系外，分散剂是影响涂料贮存稳定性的重要因素。分散不佳的色浆会发生返粗、沉降及着色力下降。

6, when preventing the coarse and increasing storage stability, if the inappropriate dispersant is used, the color change will occur, or the color change will be caused by flocculation. In addition to the resin system, the dispersing agent is an important factor affecting the storage stability of the coatings. The poor dispersion of the color pulp will occur back rough, settlement and decline in coloring force.

7、增加展色性和颜色饱和度分散剂的这个作用最易为大家所忽略。有实例表明，采用不同的分散剂分散相同的颜料，其色相及饱和度会有明显差别。通常来说，分散得越好，饱和度会越高(如果是碳黑，则是分散得越好，L值越低，黑度越高)。

7. The effect of increasing color dispersion and color saturation dispersant is most easily ignored. An example shows that the color phase and saturation of the same pigment are obviously different by using different dispersants to disperse the same pigment. Generally speaking, the better dispersion, saturation will be higher (if it is black, is the better dispersion, the lower the L value, the higher the blackness).