铝银浆的定向

2020-04-07481

  铝银浆的定向

  亮度,白度,色彩饱和度,遮盖力,颜色变化和鲜艳度。 它们不仅与粒度和粒度分布有关,而且与漆膜中片状铝颜料的取向有关。

  当片状颜料平行于涂膜表面取向时,可以获得好的结果。 不良的取向会导致光泽低或浊度不均。

  溶剂的蒸发使漆膜收缩并水平挤压铝银浆。 涂料中的溶剂含量越高,该效果越明显。 这解释了片状颜料的取向。 因此,低固含量涂料的光学性能优于高固含量涂料。

  Aluminum paste orientation

  brilliance, brightness, colour saturation, coverage, flop and DOI - depend not only on particles and particle size distribution, but also on the orientation of the aluminium flakes in the paint film.

  Best effects are achieved when the flakes lie parallel to the surface of the film, Poor orientation leads to "clouding” or to an uneven "salt and pepper" effect.

  The evaporation of the solvent causes the film to shrink and virtually press the aluminium paste into a horizontal position. The higher the solvent content of the paint, the more pronounced this effect is. This explains the observed phenomenon that pigment orientation and thus the optical properties of" low solid paints"are considerably better than those of "high solid paints"。


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