The amount of acetone-soluble materials in molded or laminated phenolic goods can be determined using ASTM D494. Acetone is required in this test because it has a low boiling point and evaporates very quickly. The values expressed in SI units should be considered standard.
Scope:
The standard test method ASTM D494 is a valuable technique for acetone extraction of phenolic products. Acetone extraction shall be treated simply as a quantitative expression of a feature generally related to the degree of cure for molded phenolic products. The numerical value of the acetone test has no demonstrable strict relationship with the optimum mechanical and electrical qualities of a well-cured component.
Test Procedure:
In the ASTM D1601 test, Decahydronaphthalene is prepared by using the required material. First, the viscometer is cleansed by letting it stand overnight in a cleaning solution, and then the solution is prepared according to ASTM D1601. Finally, after conditioning the specimen, the flow time of solvent is measured by viscosity meter.
Specimen Size :
ASTM D494 requires 50 mL of acetone, 3.000 g of powdered sample, filter paper of 12.5 to 15 cm in diameter
Data:
Acetone – extractable matter, % = [(W – D)/S] × 100
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