Coating common sense: application and use method of multifunctional thickener for ink coating

Core tip: ink coating multifunctional thickener is a high-grade non-toxic environment-friendly product, has excellent thickening, gel, adhesion, emulsification, suspension and film forming properties As thickener and suspending agent, it is mainly used in high-grade ink, coating and other chemical industry fields It has good thickening effect, strong shear resistance, permanent stability at high viscosity, and can produce permanent emulsion and suspension with low viscosity The colloid produced has good transparency and long rheological property It is suitable for thickening and suspension of high-grade ink coating due to the small amount of residual solvent or non-toxic solvent Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coatings home news: ink paint multifunctional thickener is a high-grade non-toxic environmental protection product, has excellent thickening, gel, adhesion, emulsification, suspension and film forming As thickener and suspending agent, it is mainly used in high-grade ink, coating and other chemical industry fields It has good thickening effect, strong shear resistance, permanent stability at high viscosity, and can produce permanent emulsion and suspension with low viscosity The colloid produced has good transparency and long rheological property Due to the small amount of residual solvent or non-toxic solvent synthesis, it is suitable for thickening and suspension of high-grade ink coating 1 Property: loose white powder in appearance, with a bulk density of 216kg / m2 and glass transition temperature of 100-105 ℃ The pH of 0.5% aqueous dispersion is 2-4, and its equivalent is 2.6 ± 4 The equilibrium moisture content is 8-10% (relative humidity 50%) The main functions of multifunctional thickener for ink coating are as follows: thickening can produce wide range of viscosity and fluidity; suspension can make insoluble components permanently suspended in the system; emulsification plays a role of emulsification and stability in oil / water phase Physical and chemical index item index: appearance white loose powder has slightly smelly specific gravity: < 1.2 viscosity: 6000 ～ 15000pa S pH value: 2 ～ 4 loss on drying: ≥ 2.0% burning: ≥ 2.0% heavy metal: ≥ 10ppm use method ink coating multi-functional thickener mechanism: 1 Salt thickening, the most common way is to turn acid resin into appropriate salt, The curly resin molecules are opened to cause thickening In water and other polar solvents, sodium hydroxide (sodium hydroxide, NaOH), potassium hydroxide (KOH), ammonia water (nh40h) and the like are used for neutralization, which is easy to generate salt; in acute weak or non acute solvents, organic amine is used for neutralization When the resin is used as emulsifier, in order to achieve the best stability of oil / water emulsifier, it is necessary to use water-soluble inorganic alkali and oil-soluble organic amine to double neutralize the resin, so as to generate salt soluble in water and oil, and play a bridge role in oil and water phases 2 For light bond thickening, a hydroxyl donor is added to the resin As a carboxyl donor, the resin molecule can combine with one or more hydroxyl groups to form hydrogen bond to thicken This method takes time, maybe from 5 minutes to several hours, and the consistency can reach the highest value The pH value of this kind of substance is slightly acidic, and the thickening can be accelerated by heating the dispersion to 70 ℃ (but not more than) Commonly used polyhydroxy and polyethoxy reactants are nonionic surfactants, solvents, polyols, glycol monosilane copolymers, polyepoxyethane, fully hydrolyzed polyvinyl alcohol, etc 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,