Coating classification: Flocculation of coating pigments and fillers

Core tip: dry color filler particles are agglomerated due to the interaction of surface tension, forming a collective, and the particles are filled with air After dispersing and grinding, the pigment is wetted and dispersed by the base material or wetting dispersant, and then agglomerates together, which is called flocculation Paint and dispersant are filled between the flocculation particles After a period of time storage, the coating obtained by painting again has a decreased hand feel, which means that the coating has flocculation Flocculation of pigments and fillers can increase the viscosity of coatings and reduce the fluidity of continuous phase; flocculation can enhance the non-Newtonian effect and thixotropy of the system; flocculation 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: dry color filler particles due to the interaction of surface tension together, forming a collective, between the particles filled with air After dispersing and grinding, the pigment is wetted and dispersed by the base material or wetting dispersant, and then agglomerates together, which is called flocculation Paint and dispersant are filled between the flocculation particles After a period of time storage, the coating obtained by painting again has a decreased hand feel, which means that the coating has flocculation The flocculation of pigments and fillers increases the viscosity of the paint and reduces the fluidity of the continuous phase; the flocculation enhances the non Newtonian effect and thixotropy of the system; the flocculation causes the uneven color or luster of the dry paint film to decrease and the hand feel to become rough Flocculation is related to the volume concentration of pigment, the type of dispersant and the type of base material In water reducing and high solid powder system, it is very important to prevent flocculation It depends on electrostatic discharge and quotient rejection (steric resistance) to prevent flocculation The emulsion paint system mainly relies on wetting dispersant to resist flocculation, and the type and amount of dispersant have a great influence on it 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,