Paints and Coatings

Scope: ASTM E1709-09 test method covers the measurement of the retro reflective properties of sign materials such as traffic signs and symbols (vertical surfaces) using a portable retroreflectometer at 0.2-degree observation angle that can be used in the field. The portable retroreflectometer is a hand-held instrument with a defined standard geometry that can be placed...

Scope: ASTM E1710-18 test method covers measurement of the Retroreflective properties of horizontal pavement marking materials containing retroreflecting beads, such as traffic stripes and surface symbols, using a portable retroreflectometer that can be placed on the road delineation to measure the retroreflection at a prescribed geometry. Test Procedure:   ASTM E1710-18 test method involves the use...

Scope: ASTM D6442 is intended to provide a laboratory process for quantifying and characterizing the rate of copper release from antifouling coatings in replacement ocean water throughout immersion under controlled laboratory circumstances. The results of this test method reveal a pattern of copper release from an antifouling layer after 45 days of exposure. Procedure In...

Scope  ASTM D7133-21 CIELAB is a visual-based scale used in the polyurethane industry to specify color and set color tolerances. The Yellowness Index indicates how far the sample has strayed from colorless to yellow. Clear liquids with yellow saturation (dominant transmission wavelength in the 570 to 580 nm region) suit this index. It’s used to...

Scope: This test method defines a procedure to determine the scratch resistance of polymer using an instrumented scratch machine. ASTM D7027-13 is an automated test method, as the process of inducing the scratch to record the necessary data is handled by the machine. This method helps recognize the surface damage on a polymeric coating or...

Scope: ASTM D6991-05 test method defines the procedure for measuring internal stresses of organic coatings by the cantilever (beam) method. When the elasticity of substrate (Es) is much greater than the elasticity of coating (Ec), the cantilever method for determining internal stresses is found to be suitable. The method is also appropriate where the thickness...

Scope: This practice establishes procedures for the evaluation of the resistance of industrial protective coatings to immersion in chemicals. Test Procedure: Method A—Evaluation of specimens under conditions of constant temperature at atmospheric pressure, (that is, without a thermal gradient). Method B—Evaluation of specimens under conditions that provides a temperature gradient across the sample: The temperature...

Scope: ASTM D6905-03 describes the procedure to measure the ability of a coating film and its substrate to withstand defects caused by physical impact. This method determines the resistance of the coating to cracking, shattering, etc. This practice is useful in predicting the performance of the organic coating. Test Procedure: The organic coating to be...

Scope: ASTM D6902-04 measures the amount of evaluated formaldehyde from a coating containing melamine-formaldehyde resins. The intention is to give reproducible comparative laboratory evaluation and not duplicate the evolved formaldehyde from an industrial process. The catalyzed coating systems that cure at or below 40°C are disapproval of this method. Test Procedure: A 0.2 g coating...

Scope: High gloss coatings on automobiles, boats, and toys face various conditions during manufacturing and service that can mar their surface. The coating should be able to maintain its appearance in the face of these conditions. ASTM D6279-15 test method is a way to predict the ability of a high gloss coating to resist mar...

Scope: ASTM D7867 is useful to get information about the extent of temperature dependence which in turn is important to prepare a viscosity-temperature table or curve. This information would allow a manufacturer or user to predict the impact of heating the paint. Procedure: Three test methods are described in ASTM D7867: Test Method A is...

Scope: ASTM D7786 test method may be used by paint companies and raw material suppliers to assess the interactions of primers and topcoats with respect to their ability to provide good enamel holdout. Test Procedure: In ASTM D7786 test method, a substrate is coated with a test primer and allowed to dry (primed topcoat). A...

Scope: ASTM D6133 is the test method to determine the levels of acetone, p-chlorobenzotrifluoride, methyl acetate, and t-butyl acetate in paints. This gas chromatographic test method is a quick and easy way to find out the levels of these chemicals. To prevent the risk of disruptions, this test procedure is only performed for materials with...

Scope: ASTM D7836 method for stress measurements has been useful in establishing root causes of flow problems such as extreme orange peel and sagging etc. The stress ramp applied to the material exceeds the yield stress of the material. Torque increases the rotation of the spindle and the value of the torque is converted into...

Scope: ASTM D7835/D7835M  is quite reliable for measuring solvent resistance by using a mechanical rubbing machine. The mechanical rubbing machine provides consistent stroke length, rate, pressure, and contact area that are not subject to variables such as human fatigue. The test solvent used in the rubbing machine has a significant effect on the number of...