Coating classification: rheological additives

It is suggested that rheology is closely related to the stability and practicability of the coating formulation In a coating formulation, the combination of resin, pigment and solvent has no optimized effect Therefore, most of the formulas contain rheological modifiers, so that the final product has better rheological properties Rheological additives can control the flow characteristics of coatings, inks, emulsions or pigment suspensions Rheological control agent can be used in solvent and water-based systems, and it can be used in low shear viscosity (sedimentation, sagging, flow equality) or high shear viscosity (construction and dispersion process, etc.) The assistant of changing viscosity in coating Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: rheology is closely related to the stability and practicability of the coating formula In a coating formulation, the combination of resin, pigment and solvent has no optimized effect Therefore, most of the formulas contain rheological modifiers, so that the final product has better rheological properties Rheological additives can control the flow characteristics of coatings, inks, emulsions or pigment suspensions Rheological control agent can be used in solvent and water-based systems, and it can be used in low shear viscosity (sedimentation, sagging, flow equality) or high shear viscosity (construction and dispersion process, etc.) There are two kinds of additives that can change the viscosity in coatings One kind can change the shape of flow (viscosity) curve, that is, it can only improve the viscosity at low shear rate, but rarely at high shear rate This kind of assistant is called rheological assistant The common rheological additives are organic clay, fumed silica, hydrogenated castor oil and micro gum The other kind can not change the shape of the flow (viscosity) curve, but can only move the position, that is, under the high and low shear rates, it can improve the viscosity This kind of assistant is called thickener The commonly used water-soluble thickeners are cellulose ether, alkali swelling polyacrylic acid, associated thickener and mineral thickener The former is mostly used for solvent based coatings, while the latter is mostly used for waterborne coatings Rheological additives can be classified into organic and inorganic rheological additives according to their biological properties, natural and synthetic rheological additives according to their production methods, swelling / dissolving and associating rheological additives according to their thickening methods, 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,