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Anti-corrosive paints based on different pigments
The pigments prepared were incorporated into 12 paint formulations based on medium oil alkyd resin, as shown in Tables III-V. These paint formulations were divided into three groups. A formulation containing hematite (naturally occurring iron oxide) was included in each group for comparison. Each formulation group has a different pigment/binder ratio, so as to compare the efficiency of the pigments with respect to the binder, in an attempt to show the best pigment/binder ratio that afford the best corrosion inhibition effect of these pigments. The P/B ratios selected were 1.74, 2.233, and 2.94 for the three groups, respectively. All paint formulations were prepared and adjusted to have the following characteristics:
. viscosity of four Poise; and
. dry paint film thickness of 50m for the measurements of
physico-mechanical properties.
Different paint formulations are given in Tables III-V.
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