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    Home > Coatings News > Paints and Coatings Market > Coating classification: anti settling agent

    Coating classification: anti settling agent

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: anti settling agent product brief introduction anti settling agent is a kind of coating's rheological control advantage, which makes the coating have thixotropy, and the viscosity greatly improves the thickener discussed in the previous chapter, most of which can give the coating thixotropy Anti settling agent plays an important role in modern coatings, and has an important impact on the production, storage, coating and coating performance of coatings Therefore, its use is increasingly valued, and new varieties with better performance are constantly developed Product picture product classification organobentonite Organobentonites are formed by the reaction of natural montmorillonite, mainly hydropyroxene, with onium salt (such as quaternary ammonium salt) In terms of 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 Coating home news: anti settling agent product brief introduction anti settling agent is a kind of coating rheological control benefits, it makes the coating has thixotropy, viscosity greatly improve the thickener discussed in the previous chapter can give the coating thixotropy Anti settling agent plays an important role in modern coatings, and has an important impact on the production, storage, coating and coating performance of coatings Therefore, its use is increasingly valued, and new varieties with better performance are constantly developed Organobentonites organobentonites are made from natural montmorillonite, mainly hydropyroxene, which reacts with onium salt (such as quaternary ammonium salt) In terms of coating, organobentonites are generally used as anti settling agent and thickener The mechanism of preventing precipitation is to change the rheological properties of the system, make it thixotropic, so as to prevent the settlement of pigments and fillers The addition of organic modified bentonite can be seen in two ways, namely, pre gel addition and direct addition of powder No matter which method is used, in order to give full play to the thickening effect of organic clay, it must be fully activated, i.e adding polar additives, such as 5% aqueous methanol and ethanol The polar additive can be solvated on the surface of the sheet covered by the unsubstituted organic cations, so as to reduce the attraction between the sheets, and through grinding, the polar additive can infiltrate into the sheets, so as to reduce the attraction between the sheets At present, organobentonites are widely used Organobentonites are added to chlorosulfonylethylene anticorrosive coatings and chlorinated rubber anticorrosive coatings The results show that the coating has good leveling property, no sagging phenomenon, and prolongs the settling time of pigment The application of organic modified bentonite as anti settling agent in the coating can significantly improve the performance of the coating, but due to the deep color, poor transparency, easy to produce brush marks, increasing the amount of solvent and the solid content of the paint liquid, there are some limitations in the application There must be some limitations, otherwise there won't be so many kinds of anti sedimentation agents Castor oil derivative castor oil derivative is a kind of non-polar solvent, through dispersion, activation, mutual winding of swelling long chains to form thixotropic structure and play a thickening role When the shear force is applied, the winding is pulled away, the structure is damaged, and the viscosity will decrease; when the shear force disappears, the winding will be resumed This rewinding process is slow, so the viscosity recovery is slow, allowing a longer flow time leveling, and proper adjustment can make the coating still have a certain degree of leveling at a larger flow limit thickness Castor oil derivative is a valuable rheological agent for thick coating The main products are thixomen from ICI in the UK and thxicin series from rheox in Belgium Castor oil derivatives are widely used in various coatings to endow them with thixotropic structure, improve the suspension of pigments, control the flow suspension without sacrificing the flow and leveling, control the permeability to porous objects, generally do not react with other components in the coating, do not affect their water resistance in organic system, have no adverse effect on the durability of the coating, do not appear yellow in the coating, and give them storage stability Sex Castor oil derivatives are prepared by adding pre gelatin into finished lacquer, but in order to give full play to its effect, it must be properly dispersed and activated Hydrogenated castor oil can be well used in aliphatic hydrocarbon weak solvent coatings, but it is very sensitive to temperature when it is used in solvents such as xylene If the temperature is over 35 ℃, it may dissolve and precipitate after cooling to make the coating "granulating" Therefore, this kind of rheological agent is not suitable for strong solvent system, so great attention should be paid in manufacturing, storage, transportation and coating The home of fumed silica coating focuses on the news and information of coating, diatom mud, paint coating, coating process, fire retardant coating and coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fire retardant coating,
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