MIL-P-38336A(USAF)
4.6.10.3 Synthetic fluid resistance. Immersion in fluid conforming to MIL-L-7808, shall be 168 hours at
160°F. Twenty four hours after removal, the immersed portion of the film shall be equal in hardness and color to the unimmersed portion as determined in 4.6.9.2.
4.6.11 Accelerated weathering. Test panels prepared, cleaned, and coated with primer as specified in 4.4, shall be subjected to 300 hours exposure to accelerated weathering in accordance with ASTM G26. Following this exposure, the panels shall be inspected for loss of flexibility, blistering, loss of either intercoat or metal adhesion, or any other apparent defects. (Slight whitening of the film shall be disregarded.)
4.6.12 Humidity resistance. Panels prepared by each of the three cleaning methods as specified in 4.4.2, shall be coated with primer and cured as specified in 4.4.3. The panels shall be in accordance with ASTM 02247 and operated at 120°F + 2°F and 100 percent humidity. The primer shall be exposed for 30 days. After exposure the panels shall be examined for conformance to 3.5.8.
4.6.13 Salt spray. Panels shall be prepared, cleaned, coated with primer, and cured as specified in 4.4. They shall then be exposed to salt spray in accordance with ASTM 8117, except they shall not be scored. Exposure time shall be 30 days.
4.6.14 Inhibitive properties. Panels shall be prepared, cleaned, coated, cured, and exposed as specified in
4.6.13, except that they shall be scored and the time of exposure shall be 30 days. After the exposure period, the panels shall be removed, washed in water without scrubbing, allowed to dry, and examined for conformance to
3.5.10.
4.6.15 Topcoating properties. A solvent cleaned panel shall be coated and cured in accordance with 4.4. After curing the panel shall be coated with an additional 1.0 + 0.5 mil dry film thickness of the primer. The additional coat of the primer shall also be cured as specified in 4.4. The panel shall then be tested in accordance with 4.6.9.1, and inspected for adhesion of the second coat to the initial coat of primer.
4.6.16 Heat resistance. Panels cleaned with solvent, coated with primer, and cured as specified in 4.4, shall be exposed in an oven to a temperature of 75°F +5°F for 24 hours. The panels shall then be removed and conditioned to room temperature. The coating shall be tested for adverse effects by the flexibility test, 4.6.8, and the humidity test, 4.6.12. Performance of the oven-exposed coating shall be equal to or better than the unexposed coating.
4.6.17 Toxicological data and formulations. The supplier shall furnish the toxicological data and formulations required to evaluate the safety of the material for the proposed use.
4.6.18 Packaging, packing, and marking. Packaging shall be examined for conformance with section 5.
5. PACKAGING
5.1 Packaging. Packaging shall be level A or 8, as specified (see 6.2).
5.1.1 Level A. The primer shall be packaged according to the requirements to TT-P-143. The dry zinc dust and the liquid vehicle shall be packaged in separate containers. Quantities in each of the containers shall be such that the entire contents of one container shall be mixed with the entire contents of the companion container to provide the correctly proportioned mixed primer. (For liquid vehicle containers larger than 5 gallons, the appropriate amount of zinc dust may be packaged in two or more containers.) In addition, the companion containers of dry zinc dust and liquid vehicle in pint, quart, half gallon and one gallon units shall be furnished in the same package. One container of liquid vehicle and the companion container of dry zinc dust shall be considered as one unit of primer.
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