Coating classification: floating oil on the surface of waterborne coating

Core tip: problem: there are floating black spots or impurities on the surface of the finished coating Many coating production technicians have encountered similar problems There are "small bubbles" or small black spots in the coating production process that cannot be eliminated Carefully check that these "small bubbles" are actually small black oil spots Under 20 times magnifying glass, white fine powder material can be seen in the center of oil point Analysis: small black oil spots are usually oil stains brought in by fillers When a batch of raw materials are replaced, the problem of small black oil spots disappears Application of finished coating with floating black small oil point 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: problem: the finished paint has floating black spots or impurities on the surface Many coating production technicians have encountered similar problems There are "small bubbles" or small black spots in the coating production process that cannot be eliminated Carefully check that these "small bubbles" are actually small black oil spots Under 20 times magnifying glass, white fine powder material can be seen in the center of oil point Analysis: small black oil spots are usually oil stains brought in by fillers When a batch of raw materials are replaced, the problem of small black oil spots disappears The application effect of the floating black oil spot is not good Because the black oil spot is not compatible with the coating system, the oil spot inlaid in the film becomes a defect Because the small black oil point is a mixture of oil and powder, which is involved in the film-forming process of the paint, its composition is different from other components of the paint, and the stress is generated in the drying process of the film, resulting in short cracks in the film around the small black oil point Solution: 1) for the finished coating with floating black small oil point, the base material wetting agent and appropriate emulsifier can be added appropriately, so that the black small oil point without tank capacity is like the pigment particles, after the wetting agent is adsorbed, it will enter the coating system, no longer affect the appearance of the coating and film 2) Strengthen the quality control of raw materials 3) In the paint formulation, the introduction of hydrophobic dispersant can prevent this problem 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,