Standard Test Method for Volatile Content of Coatings
|Publication Date:||10 June 1987|
This test method describes a procedure for the determination of the weight percent volatile content of solvent-educible and water-reducible coatings. Test specimens are heated at 110 ± 5°C for 60 min.
Sixty minutes at 110 ± 5°C is a general purpose test method based on the precision obtained with both solventreducible and water-reducible coatings (see Section 9). These coatings (single package, heat cured) are commonly applied in factories to automobiles, metal containers, flat (coil) metal and large appliances, and many other metal parts.
NOTE 1-Testing at 110 ± 5°C for 20 min was utilized for the establishment of the original test method in 1965. Precision data are not available and may not have been properly generated at the time. The nine paints tested then were all solvent-reducible. These conditions, 20 min at 110 ± 5°C, are no longer satisfactory for the determination of the volatile content of many coatings being tested at the present time. Water-reducible and solvent-reducible coatings were tested in the development of Test Method D 2369 using J 10 ± 5°C for 60 min and 20 min for which precision data have been generated. See Appendix for precision statements on the 20-min oven residence time.
This test method does not cover multi-package coatings wherein one or more parts may, at ambient conditions, contain liquid coreactants that are volatile until a chemical reaction has occurred with another component of the multipackage coating.
This test method may not be applicable to all types of coatings such as printing inks, and other procedures may be substituted with mutual agreement of the producer and user. See Note 3.
This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. 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 to use. A specific hazard statement is given in 7.3.1.