General knowledge of coating: requirements for performance of epoxy coal tar pitch paint during spraying

It is pointed out that the moisture absorption of the epoxy coal tar pitch paint directly affects the resistivity and dielectric constant of the powder itself If the powder is seriously hygroscopic and agglomerated, it will not be able to carry out electrostatic spraying If the moisture absorption of the powder reaches a certain level, the fluidity and film-forming property of the powder will be deteriorated, and the formed film is not smooth or even difficult to be adsorbed on the workpiece, and there will be film bubbles and pinholes The moisture absorption of the coating is not only related to the storage conditions, but also to the purification level of compressed air during spraying The condensed water in the compressed air needs to be removed by the filter moisture absorption device to minimize the moisture content in the air leading to the powder feeder 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 moisture absorption of the epoxy coal tar pitch paint directly affects the resistivity and dielectric constant of the powder itself If the powder is seriously hygroscopic and agglomerated, it will not be able to carry out electrostatic spraying If the moisture absorption of the powder reaches a certain level, it will not only affect its electric performance, but also make the fluidity and film-forming of the powder odified, resulting in a coating film It is not smooth or even difficult to adsorb on the workpiece, resulting in film bubbles and pinholes The moisture absorption of the coating is not only related to the storage conditions, but also to the purification of compressed air during spraying As for the level, the condensed water in the compressed air needs to be removed by the filter absorption device to minimize the moisture content in the air leading to the powder feeder People often add some additives to the epoxy coal tar pitch paint to enhance the stability of the powder paint, so that it will not agglomerate in the humid air or at a temperature of 7075 ℃ In order to obtain high-performance coating, the particle size of coal tar epoxy paint needs to be controlled Organic solvent is used as the dispersion medium for solvent based coating, and purified compressed air is used as the dispersion medium for coating The coating is in a dispersion state during spraying, and the particle size of the coating cannot be adjusted Therefore, the particle size of the powder suitable for electrostatic spraying is a very important technical parameter, which is suitable for electrostatic spraying The coating particle size is best between 10-90um, and the powder with particle size less than 10um is called ultrafine powder, which is easy to be carried away with air flow and cause loss 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,