126.96.36.199 Volatile content. The volatile content shall be determined as follows:
Specimen size shall be 10 2 grams selected from random areas in the
The specimens shall be weighed to the nearest 0.01 gram.
Place the specimens in crucibles in a circulating air oven preheated to
149 to 165C.
Allow the specimens to remain in the oven for 15 1 minute.
Remove the specimens and place in a desiccator until cooled to room
Reweigh the specimens to the nearest 0.01 gram.
Calculate the volatile content using the formula:
Volatile content %
Original specimen weight
Devolatilized specimen weight
Report the individual and average of five specimens. The volatiles
content shall be as specified in 3.3.1.
188.8.131.52 Specific gravity. Specific gravity of the material shall be determined in
accordance with ASTM D 792. A minimum of five specimens shall be tested and the
material shall meet the requirements of 3.3.1.
184.108.40.206 Gel time. The gel time shall be determined as follows:
Specimens approximately 5 grams in mass shall be selected from
random areas in the sample.
The specimen shall be placed on a hot plate preheated to 149 to 165C.
After 3 to 5 seconds, remove the sample, leaving a small amount of
resin on the surface of the hot plate.
Start the stop watch.