MIL-DTL-24631A(SH)
3.5.5.2 Full containers - all types. When tested in accordance with
4.5.14, the individual components shall show no skinning, livering, curdling,
hard settling (caking) or gummy sediment. The paint shall be capable of being
mixed to a smooth uniform state with no surface float (separated pigments or
other ingredients on the surface of the liquid) and shall have a consistency
not greater than 5 units from the original Kreb unit consistency before
testing. Paint mixed from the individual components shall meet all other
requirements of this specification and the applicable individual specification
sheet, except when tested in accordance with 4.5.5, the CIELAB color
difference of the mixed paint shall be not greater than 0.5 CIELAB units from
the original color values measured prior to the shelf life test and
consistency shall be no more than 525 grams to produce a 200 revolution per
minute (r/min) Krebs-Stormer shear rate (115 Kreb Units).
3.5.5.3 Accelerated storage stability. When tested in accordance with
4.5.15, previously unopened, original containers of individual components
shall have no gelling, skinning, livering, curdling, hard settling (caking) or
gummy sediment. The individual components shall be re-dispersible within 5
minutes with a paddle or mechanical mixer to a uniform condition. When tested
in accordance with 4.5.5, the CIELAB color difference of the mixed paint shall
be not greater than 0.5 CIELAB units from the original color values measured
prior to the shelf life test and consistency shall be no more than 525 grams
to produce a 200 revolution per minute (r/min) Krebs-Stormer shear rate (115
Kreb Units).
3.5.6 Odor. When tested in accordance with 4.5.16, the odor shall be
characteristic of the volatiles permitted.
When tested in accordance with 4.5.17, the
3.5.7 Infra-red spectrum.
nonvolatile vehicle of:
(a)
Component A (aliphatic amine) of formulas 184, 185 and 186
shall conform qualitatively to the infra-red spectrum on
figure 1.
(b)
Component B (epoxy) of formulas 184, 185 and 186 shall
conform qualitatively to the infra-red spectrum on figure 2.
(c)
Component A (polyester) of formula 187 shall conform
qualitatively to the infra-red spectrum on figure 3.
(d)
Component B (polyioscyanate-HDI) of formula 187 shall conform
qualitatively to the infra-red spectrum on figure 4.
3.6 Toxicity. The paint shall not contain the following materials in
excess of 0.06% by weight of the dry paint: asbestos or asbestos-form
pigments, hydrolyzable chlorine derivatives, coal tar or coal tar derivatives,
any ACGIH carcinogenic or ACGIH suspected carcinogenic compounds. Lead or its
compounds and chromium or its compounds shall not exceed 0.0050% by weight of
the dry paint film. (See 6.2 and 6.7).
3.7 Hazardous air pollutants (HAPs). When tested in accordance with
4.5.19, the content of HAPs solvents in the total paint shall not be greater
than the weight percent (%WT) values listed in table I.
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