MIL-DTL-83054C
4.6.17.1 Fluid immersion tests. Tests in accordance with 4.6.17.a through e shall be conducted in
loosely capped jars using approximately 900 +25ml of fluid for each six specimens (types I, II, III
foams) and for each nine specimens (types IV, V foam) for each sampling frequency. Specimens shall
be taken from the upper half of the test section as specified (see 4.6.5). The testing frequency for each
condition shall be every 4 weeks. The grade JP-4 and JP-5 turbine fuels shall include three specimens
tension-tested as specified (see 4.6.5), three specimens tested in accordance with the steam autoclave
exposure test as specified (see 4.6.16) and in the case of the types IV and V foams three additional
specimens shall be tension-tested while fuel wetted as specified (see 4.6.5). Prior to dry tension and
steam autoclave testing, the specimens shall be rinsed in petroleum ether, dried for 30 minutes at 160°F
(71.l°C), and cooled at room temperature. Wet tension tests shall be run immediate/y after removal
from the test fluid. Alt values for original, final (dry and wet), and percent change of tension properties
shall be reported.
4.6.17.2 Fuel (JP-4) immersion. Fuel (JP-4) immersion specified (see4.6.17 f.) shall be accomplished
in containers sufficient to provide complete immersion for all tension, CLD, and tear specimens.
Following the 4-weeks exposure at 75°F (23.9°C) (room temperature), three each specimens shall be
immediately tested for wet tension properties as specified (see 4.6.5), wet compression load deflection
properties as specified (see 4.6.8) and wet tear resistance properties as specified (see4.6.6). All values
and averages shall be reported and the percentage change from the original dry test properties shall be
calculated.
4.6.18 Hydrolytic stability tests.
4.6.18.1 200°F Temperature exposure. The baffle material shall be exposed to 200° +5°F (93.3°
+2.8°C) and 95 +5% relative humidity until failure. Types I, II, and III baffle material shall be exposed
for 8 days (or failure) and testing frequency shall be at 2, 4, 5, 6, 7, and 8 days; and thereafter, 1 day
intervals. Types IV and V baffle material shall be exposed for 24 weeks (or failure) and testing
frequency shall be at 1, 2, 3, 4, 5, 6, and 8 weeks; and thereafter, 2 week intervals. Tests shall be
conducted in loosely capped glass jars using 50 mls of distilled water for each 900 mls of container
volume and nine (maximum) tension specimens for each sampling jar. Specimens shall be supported
above the water and the water level maintained throughout the test. A minimum of two specimens for
each exposure time shall be tension tested.
4.6.18.2 160°F Temperature exposure. The baffle material shall be exposed to 160° +5°F (71.1°
+2.8°C) and 95 +5% relative humidity. Types I, II, and III baffle material shall be exposed for 6
weeks (or failure) and testing frequency shall be 2, 3, 4, 5, and 6 weeks, and thereafter, 1 week
intervals until failure. Types IV and V baffle material shall be exposed for 24 weeks (or failure) and
testing frequency shall be at 4 week intervals. Tests shall be conducted in either a humidity cabinet or
loosely capped jars with 50 mls of distilled water for each 900 mls of container volume. Three tension
specimens shall be tested for each sampling frequency.
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