MIL-PRF-9117E
3.3 Recycled, recovered, or environmentally preferable materials
. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible
provided that the material meets or exceeds the operational and maintenance requirements,
and promotes economically advantageous life cycle costs.
3.4 Bond strength.
3.4.1 Minimum bond strength The minimum bond strength shall be 5.0 lb. after 4 hours
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of cure and 10.0 lb. after 24 hours of cure when prepared and tested in accordance with
paragraph 4.4.3.2.
3.4.2 Bond strength upon exposure to aromatic fuels After exposure to aromatic fuels
.
the bond strength shall be a minimum of lb when prepared and tested in accordance with
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paragraph 4.4.3.3.
3.4.3 Bond strength after storage The bond strength of cured specimens prepared using
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aged adhesive shall be at least 80 percent of the strength obtained for the 24 hour cure on
the unaged adhesive (see 4.4.4.2).
3.5 Heat resistance The adhesive, when applied and cured properly, shall be able to
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withstand exposure to elevated operating temperatures (158F)without failure of the
adhesive bond under a shear load of 2 pounds per square inch (see 4.4.5.2).
3.6 Storage stability The adhesive, when aged, shall show no signs of gelling, or
.
deterioration such as lumping, coagulation, or separation of adhesive components, and
shall be readilybrushable (see 4.4.4.1).
3.7 Photochemical requirements The manufacturer shall certify that materials used in the
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adhesive are non- hotochemically reactive.
p
3.8 Environmental requirements The adhesive shall not contain any EPA Class I ozone
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depleting substances or hazardous materials as defined in FED-STD-313, nor shall it
contain any chemical listed in the current report of known carcinogens of the National
Toxicology Program.
4. VERIFICATION
4.1 Classification of inspections The inspection requirements specified herein are
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classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
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