D – 12 Standard Test Method for Oil Absorption of Pigments by Spatula Rub- out, oil absorption, pigments (general properties), spatula rub-out test, Linseed. ASTM D Standard Test Method for Oil Absorption of Pigments by Spatula Rub-out. ASTM D Standard Test Method for Oil Absorption of Pigments by Spatula Rub-out. Lab ID: Use This test method covers the determination of the oil.
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Standard Test Method f ASTM D standar A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior astk use.
Summary of Test Method 3.
The amount of oil required to form the paste is used to calculate an oil absorption value. Oil absorption values can be used to characterize batches of a given pigment. Because the end points are different, the values obtained from the two test methods generally differ.
ASTM D281 – 12(2016)
Apparatus and Materials 5. Determine the weight needed by multiplying 3. For example, a 20 g specimen astk is used for zinc oxide 3.
Transfer the amount, weighed to 0. Try to provide dry pigment for the oil to strike. Do not rub or grind; as the particles of pigment become wetted, they collect in small lumps that gradually coalesce. As the coalescence proceeds, reduce the rate of oil addition by at least half.
The end point is reached when the lumps, with a rolling action from the spatula, collect into a single ball or the excess of oil smears the wall of the container. Current edition approved Feb. Originally published as D — 57 T.
astm d doc – P(1) –
Last previous edition D — 84 e1. Express as grams of oil per g of pigment. Precision and Bias 9. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
ASTM D – 12() Standard Test Method for Oil Absorption of Pigments by Spatula Rub-out
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