Coating knowledge: precautions for coating water slurry printing

Key tips: 1 The key to the preparation of paint water slurry is the quality of binder When preparing dark color slurry, high-quality binder with high solid content should be selected, and then 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 In summer, due to dry weather and low humidity, the water slurry is easy to be blocked In order to reduce the drying speed of the water slurry and prevent the early drying of the printing slurry, a proper amount of hygroscopic agent can be added to the printing slurry to keep the surface of the water slurry wet without skinning The general amount is 3%, and the excessive amount is absorbed Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Paint Home News: 1 The key to the preparation of paint water slurry is the quality of adhesive When preparing dark color slurry, high-quality adhesive with high solid content should be selected, and then hand feeling conditioner 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 2 When printing water slurry on chemical fiber fabric for chemical fiber fabric printing, due to the weak coloration of the adhesive on the chemical fiber fabric, if you want to obtain a satisfactory fastness, you need to increase the coloration of the adhesive on the chemical fiber fabric The actual method is to add a color fixing agent, but because of the cross-linking effect of the color fixing agent and the adhesive, the product feel will become hard, so it is very important to select the color 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 3 The problems of depth reduction and solidification often occur in the brightness of color in the water slurry printing 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,