Common knowledge of coating: how to reduce the amount of pearlescent pigment in use

Core tip: if the amount of pearlescent pigment is less, the cost of ink will be lower, and the power of using pearlescent ink will be greater But is there a good way to reduce the amount of pearlescent pigment in ink? Yes The main purpose of reducing the amount of pearlescent pigment is to make the flake pearlescent pigment achieve parallel orientation If the flake pearlescent pigment can be evenly and parallel arranged on the surface of the ink layer, even if there are no pigment particles in the middle layer or bottom layer of the ink layer, the pearlescent effect will not be affected, because the light is blocked by the flake particles of the upper surface layer, and the pigment particles in the middle layer and bottom layer are not affected by the light, so the light cannot be reflected or refracted, Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: if the amount of pearlescent pigment is less, the cost of ink will be lower, and the power of people to use pearlescent ink will be greater, but is there a good way to reduce the amount of pearlescent pigment in ink? Yes The main purpose of reducing the amount of pearlescent pigment is to make the flake pearlescent pigment achieve parallel orientation If the flake pearlescent pigment can be evenly and parallel arranged on the surface of the ink layer, even if there are no pigment particles in the middle layer or bottom layer of the ink layer, the pearlescent effect will not be affected, because the light is blocked by the flake particles of the upper surface layer, and the pigment particles in the middle layer and bottom layer are not affected by the light, so the light cannot be reflected or refracted, It has little effect on pearlescent luster The following steps are to realize the uniform arrangement of flake pearlescent pigments on the surface of the ink layer, and finally reduce the amount of pearlescent pigments The quality of pearlescent pigment ink depends largely on the wettability and dispersibility of the resin carrier to the flake pigment and the degree of parallel orientation in the ink film The former is determined by the structure and characteristics of the selected resin, while the latter depends on the ink design formula and the correct implementation of the printing process Resin carrier is the foundation, formula design and printing process are the key The ideal ink should have a lower solid content Therefore, the amount of pearlescent pigment should not be too much, because too much pigment is easy to be concentrated, it will be in an irregular state, and it is very easy to arrange poorly During the drying process of the ink layer, the volume of the ink layer should have a larger shrinkage force The mica titanium pearlescent pigment flakes should be compressed to be parallel by using the shrinkage force and the self gravity of flake powder particles, This is closely related to many factors such as the proportion and viscosity of color paste, coating and ink The more the flake pigments are arranged parallel to the substrate, the better the pearlescent effect of the pigments is Adding a certain amount of polyethylene wax dispersion to ink can improve its directional performance The selection of flake pigment for pearlescent pigment flake diameter should master the relationship between flake size and flash effect: the larger the flake diameter is, the larger the distance between flash sources (flake to flake distance) is, and the more dispersed the flash effect is This is because the larger the sheet diameter is, the more opportunities for multiple reflection and refraction of light on the surface will be, so the flash intensity will be strong; if the sheet diameter is small, the distance between flash sources will be small, the flash effect will be concentrated, the opportunities for repeated reflection and refraction will be less, and the flash intensity will be weaker In addition to the relationship between film diameter and light, it is also related to the state of pigment in ink Generally, the smaller the film diameter is, the easier it is to agglomerate and settle in the binder; the smaller the aspect ratio of particles, the easier it is to suspend in the binder In the preparation of ink, thickener can be added to prevent settling or pre wetting the pigment, and then dispersed in the binder to avoid agglomeration or settling Because mica titanium pearlescent pigment has good dispersing ability, it creates superior conditions for ink manufacturing In low viscosity ink medium, only low-speed mixing can obtain good dispersing effect At the same time, it can avoid the use of three roller machine, high-speed mixer or ball mill and other equipment in the manufacture of other inks, because it will cause the mica titanium pearlescent pigment particles to be broken and lose luster Even if the above equipment must be used in the production to disperse, it should be arranged at the last stage of the ink production process, and the mica pearlescent pigment can be added to mix evenly Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,