Coating classification: rheology and coating quality

It is suggested that the rheological property of coatings is one of the important factors affecting the appearance and performance of coatings There are many components in the coating, and the interaction between the components is very complex, which will affect the rheological properties It can affect the pigment sinking in the paint storage, the leveling and sagging of the wet film in the construction, and the construction viscosity The results of these effects will ultimately be reflected in the quality of the dry film Fluidity and open tank quality There must be a time interval between production and use of coatings If the color paint sinks during the storage period, the quality of opening tank will be reduced Pigment is one of the important components of dry film, 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: the rheological property of paint is one of the important factors that affect the appearance and performance of paint film There are many components in the coating, and the interaction between the components is very complex, which will affect the rheological properties It can affect the pigment sinking in the paint storage, the leveling and sagging of the wet film in the construction, and the construction viscosity The results of these effects will ultimately be reflected in the quality of the dry film There must be a time interval between the fluidity and the quality coating of open tank from production to use If the color paint sinks during the storage period, the quality of opening tank will be reduced Pigment is one of the important components of dry film If the bottom pigment can not be evenly stirred or even completely stirred after renewal, the quality of dry film, such as color and various properties, will inevitably be reduced There are many construction methods of rheological and construction quality coating In these construction parties, the forces borne by the coating are very different and complex, which can be a combination of simple shear, pure shear and tensile For example: brush coating is mainly based on simple shearing, roller coating is mainly based on pure shearing, spraying is mainly based on simple shearing before spraying out of the nozzle, and stretching after spraying out of the nozzle The leveling of coating is one of the important factors for the appearance quality of dry film Appearance quality is not only for decoration, but also closely related to properties and performance For example, the amount of flow and flow equality of anti-corrosion coating are related to the rheological property, and the appearance defects have a significant impact on the overall anti-corrosion performance Other factors, such as solvent, surface tension and so on, have a great influence on the appearance However, the fluidity is the most important in the construction In the process of fluidity and pigment dispersion, one of the steps is to separate pigment aggregates into primary particles This separation method is to impose shear stress on the abrasive to act on the pigment aggregate, forcing the primary particles to separate The larger the shear stress, the better the separation effect From the point of view of improving grinding productivity, the best way to improve the viscosity of abrasive is to increase the pigment content, but when it is raised to the critical stacking value, the expansion fluidity will be At this time, the abnormal flow under the shear force reduces the shear probability of the pigment aggregate and the grinding efficiency, so there is a limit to improve the viscosity of the abrasive by increasing the pigment content 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,