Abstract
Dr. Engr. Sheraz Ahmed Qureshi* Author Affiliations General Manager Technical, PhD in Chemical Engineering, MSc Chemical Engineer, MS (Total Quality Management), MBA, Brighto Paints Private Limited Pakistan and UAE Received: September 13, 2021 | Published: September 24, 2021 Corresponding author: Dr. Engr. Sheraz Ahmed Qureshi, General Manager Technical, PhD in Chemical Engineering, MSc Chemical Engineer, MS (Total Quality Management), MBA, Brighto Paints Private Limited Pakistan and UAE DOI: 10.26717/BJSTR.2021.39.006236
Highlights
Paint is a liquid which spreads over a substrate in the form of thin layer and it is transformed into a solid adherent film [1]
The slurry processed through Nano Mill reduced the particle size of calcium carbonate from 37.5 microns to 2.63 microns while the slurry processed through conventional agitator reduced the particle size of calcium carbonate from 37.5 microns to 18.05 microns
Paint in which calcium carbonate slurry processed from Nano mill showed brilliant results in terms of wet opacity, dry opacity, gloss, smoothness and drying time compared to the paint in which calcium carbonate slurry processed through laboratory mixer as shown in (Figure 4)
Summary
Paint is a liquid which spreads over a substrate in the form of thin layer and it is transformed into a solid adherent film [1]. Components of paint are solvent, pigment, filler, additives and binder. The technical definition of a binder is the non-volatile part of a paint excluding the pigments and filler, which includes the non-volatile additives [2]. The examples of synthetic fillers are precipitated calcium carbonate, aluminum silicate, etc These pigments and extenders are commercially available in solid or slurry form. Functions of solvent include flow control flow, stability of paint liquid and improving application properties. Different additives have different impact on the liquid paint or paint film like changing wet edge, increasing stability of the pigments used, ant freezing effect, low foaming, less skinning, etc. Alkyd enamel are paints that cure by oxidative crosslinking These paints need drier additives like cobalt naphthenate, calcium naphthenate and lead naphthenate to start oxidation process for drying.
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