| Protecto 401 vs. Polyamide Coal Tar Epoxy
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TEST
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PROTECTO 401
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POLYAMIDE COAL
TAR EPOXY
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PERMEABILITY
Procedure "A"
of ASTM E-96-66
42 Day Test Duration
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0.00 perms
|
.22 perms
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Note: The lower the permeability rating the less water borne chemicals can penetrate the lining.
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IMMERSION
in 20% sulfuric acid
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No blisters or de-
lamination of lining
after 24 months.
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Blisters over all
of the tested area of
lining after 3 months.
Test terminated.
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Note: (Rated using standards according to ASTM D714-87 Evaluating the degree of
blistering).
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SALT SPRAY
5% solution
ASTM B 117-85
Scribed
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24 months
No undercutting at
scribe. No damage
to panel.
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After 4.7 months no
undercutting at scribe. No
damage to panel
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Note: All materials were tested with an average film thickness of 40 mils.
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