MIL-DTL-24631A(SH)
approximately 2.54 cm (1 inch) apart, and at least 2.54 cm (1 inch) in length.
A piece of commercial masking tape shall be pressed firmly across the cuts.
The tape shall be pulled off rapidly, and the panel shall be examined for any
adhesion loss. Adhesion loss shall be in accordance with the requirements of
3.5.3.
4.5.12 Water immersion test. Prepare painted neoprene test panel in
accordance with 4.4.3. One-half of the coated neoprene panel shall be
immersed in distilled or deionized water in a container with closure for 21
days. The other 1/2 shall remain exposed to the high humidity over the
enclosed area. The adhesion on both halves of the test panel shall be
evaluated in accordance with 4.5.11. There shall be no whiteness or color
change of the film when the coated neoprene is removed from the water. The
panel shall be bent double over a 1-inch mandrel and examined without
magnification for cracks. Test results shall be in accordance with the
requirements 3.5.4.
4.5.13 Storage stability - partially-full containers - Formulas 184,
185 and 186. Components shall be tested separately. Condition in container
shall be determined in accordance with method 3021.1 and method 3022.1 of
FED-STD-141 and skinning shall be determined after 48 hours in accordance with
method 3021.1 of FED-STD-141. The partially full containers shall be resealed
and aged for 30 days at 60 C (140 F). After aging examine for individual
components for skinning, surface float (separated pigments or other
ingredients on the surface of the liquid), livering, curdling, hard settling
(caking), gummy sediment. After mixing to a smooth uniform state with a
paddle or mechanical mixer (mechanical stirrer or paint shaker) for 5 minutes,
inspect for surface float (separated pigments or other ingredients on the
surface of the liquid) measure consistency. After aging, examine mixed paint
for curing. Test results shall be in accordance with the requirements of
3.5.5.1.
4.5.14 Storage stability - full container. A full container of each
individual component shall be allowed to stand undisturbed for 12 months at
ambient laboratory conditions and then the contents tested. The cans contents
shall be evaluated for condition in container for skinning, livering,
curdling, hard settling (caking) or gummy sediment. After mixing to a smooth
uniform state with a paddle or mechanical mixer (mechanical stirrer or paint
shaker) for 5 minutes, inspect for surface float (separated pigments or other
ingredients on the surface of the liquid) measure consistency and color shall
be determined and other applicable tests (see table II) made for compliance
with 3.4 and the applicable specification sheet. All test results shall be in
accordance with the requirements of 3.5.5.2.
4.5.15 Storage stability - accelerated storage stability. Previously
unopened, original containers of each individual component shall be exposed at
a nominal temperature of 60 C (140 F) for a period of 30 days. After
completion of thermal test, container shall be equilibrated at ambient
laboratory conditions for 24 hours. Each container of paint component shall
be examined in accordance with 4.5.14 for compliance with all the requirements
of 3.5.5.3. Test results shall be in accordance with the requirements of
3.5.5.3.
4.5.16 Odor. Odor shall be determined in accordance with ASTM D 1296.
Test results shall be in accordance with the requirements of 3.5.6.
Infra-red spectrum. The infra-red spectrum of nonvolatile
4.5.17
vehicle shall
be established on a recording infra-red spectrophotometer from
approximately
600 to 4000 wave numbers in accordance with ASTM E 1252. Test
results shall
be in accordance with the requirements of 3.5.7.
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