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Significance and Use
5.1 The drying times of a coating are significant in determining when a freshly painted room, floor or stair may be put back in use or a coated article handled or packaged. Slow drying may result in dirt pick-up or, on an exterior surface, moisture may cause a nonuniform appearance.
5.2 These test methods are used to determine the various stages of drying or curing in the dry-film formation of organic coatings using mechanical devices for the purpose of comparing types of coatings or ingredient changes, or both. To evaluate the stages of drying in a quantitative manner, use of instrumentation under environmental controlled conditions is strongly recommended. These devices also offer a method of determining drying characteristics of coatings that can not be ascertained within the standard 8-h work day.
5.3 When evaluating drying characteristics of baking systems, the circular drying time devices offer a method to determine quantitatively drying times of coatings at room temperature and elevated conditions. Maximum temperatures would be limited by considerations such as the affect of temperature on the motor lubrication or structural components of the device.
5.4 The straight line drying time devices offer a method to determine quantitatively drying times of coatings tested simultaneously using one recorder.
5.5 This method is useful in comparing the behavior of coatings during drying of the same generic type. Determination of actual drying times should be conducted following procedures outlined in Test Method or ISO 9117-3.
1.1 These test methods describe the determination of several stages and the rate of dry-film formation of organic coatings using straight line and circular mechanical drying-time recording devices. The use of mechanical recorders is valuable in comparing the drying behavior of coatings of the same generic type, allowing that one coating may form a gel or resist tearing at a faster rate than another.
1.2 Drying time measured using the mechanical recorders may differ from those found using conventional methods, such as Test Method or ISO 9117-3 (formerly ISO 1517).
1.3 The values stated in SI are to be regarded as the standard. The values given in parentheses are provided for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D823 Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels
D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D1640 Test Methods for Drying, Curing, or Film Formation of Organic Coatings
D3924 Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
D3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings
ISO StandardISO 9117-3 Drying testsSurfacedrying test using ballotini Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ICS Number Code 25.220.60 (Organic coatings)
UNSPSC Code 31211504(Coating paints)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D5895-20, Standard Test Methods for Evaluating Drying or Curing During Film Formation of Organic Coatings Using Mechanical Recorders, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top