MIL-PRF-46676B (AR)
(ĆWeight gain on Filter Paper)
(Sample Weight After Test + Weight Gain on Filter Paper)
Exudation =
The test shall be run in triplicate and the average of the three results shall be reported to
determine compliance with the requirements. Failure to comply with the requirement shall be
cause for rejection of the lot.
4.3.12 Vacuum Stability. The gas evolution shall be determined on one 5 gram sample
by the vacuum stability test at 212°F as per Method 503.1 of MIL-STD-650. If any specimen
fails to comply with the requirements, the lot shall be rejected.
4.3.13 Cracks at elevated temperature. Three specimens of ¼ inch thickness and 3/8
inch by 3 inches shall be selected and placed in a ventilated oven maintained at a temperature of
160 ± 5° F for seven days. The specimens shall then be removed and allowed to cool to ambient
conditions. The samples shall be bent 90° on a ¼ inch diameter mandrel over a period of five
seconds, then the samples shall be examined for cracks. If any specimen fails to comply with the
requirement the lot shall be rejected.
4.3.14 Cracks at cold temperature. The three specimens of ¼ inch thickness and 3/8 inch
by 3 inches and mandrel shall be placed in a box maintained at a temperature of -40 ± 5° F for
one hour. The specimen shall then be removed from the cold box and bent 90° on a ¼ inch
diameter mandrel with a bending time of 5 seconds. The specimen shall then be examined for
cracks. If any specimen fails to comply with the requirement the lot shall be rejected.
4.3.15 Color Change. Three specimens, ¼ inch thickness by 3/8 inch by 3 inches, shall
be immersed in a distilled water bath maintained at 160 ± 5°F for 24 hours. The samples shall
then be visually compared with other samples not placed in the bath to determine if there was
any change in color. If any specimen fails to comply with the requirement, the lot shall be
rejected.
4.3.16 2,3-Dimethyl-2,3-Dinitrobutane content. Two 4 gram samples shall be taken
from the beginning, middle and end, (6 total samples), of each produced batch immediately prior
to packaging. The samples shall be adequately protected to ensure no taggant degradation while
awaiting analysis. Each sample shall be analyzed in duplicate. One gram each of the samples will
be dissolved in 100 mL acetonitrile. To ensure complete dissolution of DMDNB, the sample
solution will be sonificated and shaken for about one hour each, and set aside overnight before
determination of DMDNB by high performance liquid chromatography (HPLC) with the
following conditions:
10
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business