MIL-PRF-4556F
4.3.17 Fuel and water resistance. Panels used for this test shall be solvent
cleaned and sand blasted with fresh sand to a smooth uniform appearance in
accordance with SSPC-SP5. Spray the primer, mixed as specified in 4.3.7, on three
3 by 6 inch steel panels (sand blasted side), to a dry film thickness of 0.003 to
0.004 inches. Air dry the panels for 24 hours and spray them with the topcoat,
mixed as specified in 4.3.7, to a dry film thickness of 0.003 to 0.004 inches.
Total film thickness of the panels should be 0.006 to 0.008 inches. Coat the
backs and edges of these panels in a similar manner. Air dry the panels for 7
days and immerse them in wide mouth glass jars, liter size, each containing 350 ml
of JP-8 fuel conforming to MIL-T-83133 (Jet A-1 may be used in place of JP-8), and
350 ml of distilled water. Seal the jars and place in a water bath maintained at
51 to 53oC (124 to 127oF) for 21 days. At the end of the test period, remove and
examine the panels for compliance with 3.6.8.
4.3.18 Adhesion. Use the panels that have been subjected to the fuel and water
resistance test specified in 4.3.17. Allow to air dry for 24 hours and evaluate for
adhesion according to ASTM D3359, method B. Test areas of each panel that were
exposed to JP-8 fuel and to distilled water. Observe for compliance with 3.6.9.
4.3.19 Impact resistance. Prepare panels as specified in 4.3.15 and test
according to ASTM D2794 using the 0.625 inch hemispherical head steel punch.
Panels shall be subjected to a reverse impact of 10 inch-pounds, with the coating
under test facing away from the punch. Observe for compliance with 3.6.10.
4.3.20 Solvents. The manufacturer shall certify that the coatings contain no
benzene, chlorinated compounds or ethylene based glycol ethers and their acetates.
Nonconformance to 3.4.3 constitutes failure of this requirement.
4.4 Identification marking.
Verify the presence of the required markings and
caution notice.
5.
PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When actual packaging of materiel is
to be performed by DoD personnel, these personnel need to contact the responsible
packaging activity to ascertain requisite packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activity
within the Military Department or Defense Agency, or within the Military
Department's System Command. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
6.
NOTES
(This section contains information of a general or explanatory nature that may be
helpful, but is not mandatory.)
6.1 Intended use. The two component epoxy system is military unique to the soldier
in combat (in the field) for refurbishing of combat stored fuels and lubricants. It
is intended for use on sand blasted interior surfaces of mobile and stationary mild
steel cargo tanks and auxiliary handling equipment used for the storage and
transportaion of military fuels and oils without contributing to contamination of the
cargo. It consists of a two-component yellow primer and a two-component white
topcoat, each having a maximun VOC of not more than 2.8 pounds per gallon (340
grams/liter) at application.
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