| BR®
127 Corrosion Inhibiting Primer
BR
127 datasheet
BR 127 corrosion inhibiting primer
is a modified epoxy primer. It is the leading
industry standard for high-performance corrosion inhibiting
primers and has been used in virtually every commercial
aircraft built since its introduction.
BR 127
primer can be used with essentially all 250ºF (120ºC)
film adhesives and has been designed to provide optimal
structural performance at temperatures ranging from
-67ºF to 300ºF (-55ºC to 150ºC).
BR 127
primer is formulated to provide maximum environmental
resistance and durability within the bond line, as well
as prevent corrosive undercutting. It can also be used
effectively as a protective coating outside bonded areas.
BR 127 corrosion inhibiting primer
can be cured prior to bonding. Recommended cure cycles
range from four hours at 180ºF (82ºC) to 30 minutes
at 250ºF (120ºC).
Articles primed with BR 127 primer and then cured have
an indefinite shelf life. Primed details should be wrapped
in Kraft paper (as protection from dust and dirt) and
stored prior to adhesive bonding. Maintaining controlled
conditions of 85ºF (29ºC) maximum temperature and 65%
maximum humidity is recommended for extended storage
life.
Cure cycles for adhesive films
primed with BR 127 primer may vary from 200ºF to 350ºF
(93ºC to 175ºC) with minimum pressures to assure proper
mating of bonded details.
Features and benefits
- Industry-wide standard for
corrosion resistant primers
- Prevents hydrolysis of oxide
layers
- Structural performance from
-67ºF to 300ºF (-55ºC to 150ºC)
- Compatible with a wide variety
of adhesive systems
- Improves hydrolytic stability
at the adhesive-to-metal interface
- Protects prepared surfaces
from further oxidation
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