Common knowledge of coatings: new environmentally friendly coatings: precautions for colorful printing of water slurry coatings

Core tip: water slurry coating is a kind of pollution-free high-performance coating which is ingeniously combined with powder coating and water-soluble coating It is made by stably dispersing particles of powder coating in water Compared with the powder coating, the water slurry coating needs new equipment, and the solvent coating only needs to be slightly modified with the coating equipment; it is easy to get a smooth and thin film; there is no powder flying in the construction process Today, I would like to brief you on the precautions in the printing of water slurry coating The key to the preparation of coating water slurry is the quality of binder The high-quality binder with high solid content should be selected when preparing dark color slurry Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: water slurry coating is a kind of high-performance coating with no pollution and ingenious combination of powder coating and water-soluble coating It is made by stably dispersing particles of powder coating in water Compared with the powder coating, the water slurry coating needs new equipment, and the solvent coating only needs to be slightly modified with the coating equipment; it is easy to get a smooth and thin film; there is no powder flying in the construction process Today, I would like to brief you on the precautions in the printing of water slurry coating The key to the preparation of paint water slurry is the quality of binder When preparing dark color slurry, the high-quality binder with high solid content should be selected, and then the hand feeling modifier that can increase the fastness can be used to ensure the color fastness (rubbing fastness, soaping fastness, scrubbing fastness, etc.) The polymer particle diameter of high quality adhesive should be controlled at 0.2um-1um, and the particle size should be uniform Due to the dry weather and low humidity in summer, the water slurry is easy to be blocked In order to reduce the drying speed of the water slurry and prevent the printing slurry from drying too early, a proper amount of hygroscopic agent can be added to the printing slurry to keep the surface of the water slurry wet without peeling The general amount is 3% The excessive amount of hygroscopic agent will affect the sound fastness In the process of printing operation, this kind of situation is often encountered At the beginning of printing, the printing pulp has good fluidity, but the printing pulp thickens after normal operation time, especially in the size with fixing agent This situation occurs because the printing pattern area is small and the size stays in the net for a long time With the evaporation of water and the increase of viscosity, the problem can be solved by adding 5% ammonia water into the printing pulp When chemical fiber fabric printing on chemical fiber fabric, due to the weak coloration of adhesive on chemical fiber fabric, if we want to obtain satisfactory fastness, we need to increase the coloration of adhesive on chemical fiber fabric The actual method is to add fixing agent, but due to the cross-linking effect of fixing agent and adhesive, the product feel will become hard, so it is very important to select fixing agent If the reaction of fixing agent is too slow, it will not have great effect If the reaction is too fast, it will damage the fluidity of the size, make the printing pulp cross-linking too early, and produce blocking phenomenon The fixing agent with good fixing color and high quality stability of the size should be selected In the water jet printing, the problems of depth reduction and solidification often occur The decrease of brightness depth is due to the opposite effect of water slurry on the pigment If you want to improve it, add 10% - 15% white fire oil and appropriate emulsifier in the preparation of water slurry, so as to ensure the bright color In the prepared standby water slurry, when adding the pigment, there is a normal reaction, that is, a small amount of viscosity is reduced However, some color pigments, especially black, appear the opposite situation, forming slurry solidification, viscosity rise to normal use The coagulability of the size can be improved by adding appropriate amount of ammonium sulfate into the solidified size 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,