Being able to measure the viscosity will allow to predict the behavior in a process or an application. Device used to measure the thickness or fluidity of the mixed materials, usually paint. *Talc products are not available in the USA and Canada. It can be defined as a liquid’s internal resistance to flow.
More specifically, viscosity is the resistance offered by a fluid to outside stress placed upon it. The viscosity of sandtex masonry paint is high, which means that it is a thick paint that may have difficulty flowing into cracks and crevices. In paints and coatings, rheology examines the behavior of flow and deformation properties during: Manufacturing ( pigment dispersion, mill base preparation ) Storage ( pigment/particle settling, in-can properties ) Application (brush, spray, roller ), and Film formation (leveling, adhesion, texture). Try our Socal ® UP-G range, which also acts as an effective replacement for titanium dioxide and increases dry opacity at low gloss. Quite simply, viscosity is the measure of the thickness of a liquid. Its unique morphology makes it ideal if you want to reduce rheological additives while achieving your desired viscosity. Our mineral additives adjust the viscosity and improve the wetting of pigments to minimize foaming, helping to protect the paint from biocidal attack.įor pigment suspension Imerys lamellar paint and coating products improve the pigment suspension, reduce the pigment flocculation during storage and improve spatter resistance performance such as our Hydrite® range, Kaopaque® 10S and our mica muscovite mica range, as well as our Suzorite range of products.įinally, there is precipitated calcium carbonate. It is particularly suited to high-quality matt paint formulations and in high-gel-strength paints.Īs well as kaolin, our muscovite mica with their lamellar morphologies is an excellent choice to improve pigment dispersion and in-can settle problems in paints and coatings.
It can also be used to improve settling properties and sag resistance. Our Supreme kaolin grade has a low shear thickening effect, enabling formulators to reduce thickener. Kaolin also confers unique rheological properties to paint. Talcs can also reduce sagging and in-can settling.įor gloss, semi-gloss, satin and matt VOC-compliant alkyd paints, try Jetfine® 1 talc, which also works as a pigment extender, optimizes application properties and improves outdoor durability. This results in increased low-shear viscosity and shear-thinning coating rheology that is ideal for spray paints, for example. Where available, talcs are naturally oleophilic, meaning they naturally associate with typical coating resins such as alkyds, emulsions, epoxies, amines and polyols. Contents show What is the viscosity of paint Paint is a liquid or semi-liquid material that is applied to a surface to protect, color, or provide texture. But minerals such as talcs*, kaolins and precipitated calcium carbonates can replace higher-priced thixotropes such as synthetic silicas, while increasing low-shear viscosity and improving in-can rheology. Controlling rheology can be highly technical and expensive.
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