Coating classification: organic core coating pigment

Core tip: Introduction: Core coating pigment is a new kind of pigment It has the advantages of both organic and inorganic pigments: it is bright in color and has excellent heat resistance and climate fastness It is one of the pigments suitable for road marking coating At the same time, the organic core pigment can also be used in the fields of water-based coating, paint, plastic coloring and so on When people study antirust pigment, they find that only the surface of pigment particles has effective protective effect, but the interior of pigment particles has little influence on the protective effect Therefore, this concept is applied to the manufacture of pigment, and is made with inert substance as the core 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 Coating home news: brief introduction: core coating pigment is a new type of pigment It has the advantages of both organic and inorganic pigments: it is bright in color and has excellent heat resistance and climate fastness It is one of the pigments suitable for road marking coating At the same time, the organic core pigment can also be used in the fields of water-based coating, paint, plastic coloring and so on In the study of antirust pigments, it was found that only the surface of pigment particles has an effective protective effect, while the interior of pigment particles has little effect on the protective effect Therefore, this concept was applied to the manufacture of pigments, and a core pigment with inert substances as the core and pigment characteristics as the outer coating was made Organic core pigment is a kind of core pigment, which is composed of inorganic compounds such as alumina and titanium dioxide with stable performance as the core and organic pigment as the outer layer The inorganic compounds used as the core can be white pigments, colored pigments, physical pigments or natural mineral particles White pigments include titanium dioxide, lithopone, zinc oxide, etc.; colored pigments include chrome yellow, iron oxide, etc.; physical pigments include barium sulfate, calcium carbonate, silicate (zinc, aluminum), aluminum hydroxide, etc.; natural minerals include diatomite, porcelain clay, etc As the outer layer of the core-coated pigment, the main organic pigment is azo pigment, and the available organic pigments are mainly yellow, orange and red spectrum; yellow has sulfonated phthalocyanine blue, phthalocyanine blue; green has phthalocyanine green, or is composed of yellow azo pigment and phthalocyanine blue However, if the monoazo pigment is selected, its range of application is limited due to its poor heat resistance and solvent resistance Therefore, the selection of organic pigment varieties is the key, followed by core coating and mixing technology Characteristics: coating method: the coating methods of organic core-coating pigment include adsorption type and Jianhe type The adsorption type organic core-covering pigment is a kind of pigment that can be directly coated on the surface of inorganic compounds as the core by surface adsorption The reason why the core and the coating of the adsorbed organic core pigment can be firmly combined is based on the interface chemical reaction, chemical adsorption and electrostatic attraction In the process of nitration, reduction and diazotization, the organic pigment is coated on the inorganic core Preparation process: there are two production methods of the core coating pigment: chemical method and physical method Physical method is to make use of centrifugal vibration mill and other equipment and processes, the intermolecular force (van der Waals force, hydrogen bond force) and electrostatic force between the core and the pigment, so that they can be mutually adsorbed into the core coating pigment The process flow is short, the cost is low and there is no environmental pollution However, due to the incomplete adsorption between the core and the pigment in the production process, the quality of the pigment produced is not stable In the process of use, the force between the outer pigment and the core is weak Under the higher external force, the outer pigment will gradually fall off from the surface of the core, making the application performance decline or even disappear Chemical method is to use special coating agent for coating Each molecule of the coating agent contains more than two functional groups, one of which acts on the core to make the coating agent firmly adsorb on the surface of the core, and the other function group acts on the outer pigment to make it fully coated on the inner layer After chemical adsorption, the coating agent acts as a bridge between the core and the outer pigment, which makes the internal and external forces increase, and can fully meet the requirements of practical application However, due to the introduction of coating agent in the production, the cost is much higher than that of physical method, and the process flow is prolonged, which also brings some environmental pollution problems Taking the organic red core pigment as an example to illustrate the preparation method of the core pigment, its process flow is as follows: paint house is focused on the news and coating of coating, diatom mud, paint coating, coating process, fire retardant coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect diagram of fire retardant coating,