ASTM D2369-20 pdf free download.Standard Test Method for Volatile Content of Coatings.
1.1 This test method describes a procedure for the determination of the weight percent volatile content of solvcntborne and waterborne coatings. Test specimens arc heated at 110 6 5°C for 60 mm.
Note 1—The coatings used in these round-robin studies represented air-dried, air-dried oxidizing, heat-cured baking systems. and also included muhicomponent paint systems.
1.2 Sixty minutes at 110 6 5°C is a general purpose test method based on the precision obtained with both solvcntborne and watcrhornc coatings (see Section 9).
1.3 This test method is viable for coatings wherein one or more parts may, at ambient conditions, contain liquid coreactants that arc volatile until a chemical reaction has occurred with another component of the multi-package system.
Note 2—committee D01 has run round-robin studies on volatiles of multicomponent paint systems. The only change in procedure is to premix the weighed components in the correct proportions and allow the specimens to stand at room temperature for 1 h prior to placing them into the oven.
1.4 Test Method D5095 for Determination of the Nonvolatile Content in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments is the standard method for nonvolatile content of these types of materials.
1 .5 Test Methods D5403 for Volatile Content of Radiation Curable Materials is the standard method for determining nonvolatile content of radiation curable coatings. inks and adhesives.
1.6 Test Method D64 19 for Volatile Content of Sheet-Fed and Coidset Web Offset Printing Inks is the method of choice for these types of printing inks.
1.7 This test method may not be applicable to all types of coatings. Other procedures may be substituted with mutual agreement between the producer and the user.
3. Summary of Test Method
3.1 A designated quantity of coating spec irnen is weighed into an aluminum foil dish containing 3 mL of an appropriate solvent, dispersed, and heated in an oven at 110 6 5°C for 60 mm. The percent volatile is calculated from the loss in weight.
4. Signi cance and Use
4.1 This test method is the procedure of choice fur determining volatiles in coatings for the purpose of calculating the volatile organic content in coatings under specified test conditions. The weight percent solids content (nonvolatile matter) may be determined by difThrence. This information is useful to the paint producer and user and to environmental interests for determining the volatiles emitted by coatings.ASTM D2369 pdf download.