Coating knowledge: influence of pigment dispersion on coating performance

The core tip is: the influence of pigment dispersion on the properties of coatings We will discuss the influence of pigment dispersant on the following properties of coatings: luster, transparency, compatibility, leveling, production, coloring strength and VOC reduction Gloss this is a measure of the characteristics of the coating, the higher the gloss, the stronger the reflection For the luster of high-quality coating, the particles shall not be larger than 5 microns, and the maximum is 3 microns The ink should not exceed 1 micron The large particles in the coating can not be effectively dispersed, or flocculate, or stimulate crystallization in the preparation process The polymer dispersant can also reduce the large particles formed by flocculation and improve the luster Transparent this is one of the coatings Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Home of coatings: the influence of pigment dispersion on the performance of coatings We will discuss the influence of pigment dispersant on the following properties of coatings: luster, transparency, compatibility, leveling, production, coloring strength and VOC reduction Gloss this is a measure of the characteristics of the coating, the higher the gloss, the stronger the reflection For the luster of high-quality coating, the particles shall not be larger than 5 microns, and the maximum is 3 microns The ink should not exceed 1 micron The large particles in the coating can not be effectively dispersed, or flocculate, or stimulate crystallization in the preparation process The polymer dispersant can also reduce the large particles formed by flocculation and improve the luster Transparency this is a characteristic of the coating The higher the transparency, the easier to see the bottom layer The higher the covering power, the stronger the covering power to the bottom layer The amount of light reflected and passed through the surface determines the hiding power or transparency of the coating The type and dispersion of pigment have influence on it Because of the influence of refractive index and particle size, the covering pigment has more influence on the reflected light Polymer dispersants improve transparency by affecting the pigment particle size distribution (more uniform and narrower) For titanium dioxide, high refractive index and large particles can effectively reflect and refract light of various wavelengths The addition of polymer dispersant can increase the surface area (reduce aggregate and particle size) and further improve the covering power For transparent pigments, polymer dispersants improve the particle size distribution to allow more light to pass through (increase transparency) Compatibility is important because good compatibility enables coating manufacturers to produce dispersion systems for a variety of different resin products Polymer dispersants can increase the pigment concentration, not only increase the output, but also reduce the potential media incompatibility problems from grinding the color paste to the final product Therefore, especially under the condition of using high compatibility resin, polymer dispersant expands the application range of basic coating This is very important for the production of mixed colored coatings Flow / leveling is the ability of a coating to spread over a specific surface Coating surface defects are usually caused by surface tension and occur relatively quickly Brush marks of decorative coatings are usually caused by insufficient leveling The ideal leveling behavior can be explained by Newtonian mechanics But when the pigment is introduced into the system, it will change This is because particles are affected by chemical bond and physical interaction, which is very easy to produce thixotropy and pseudoplasticity 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,