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Master Bond adhesives

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Solvay BR® 127 Corrosion Inhibiting Epoxy Primer
Categories: Polymer; Thermoset; Epoxy

Material Notes: BR® 127 corrosion inhibiting primer is a modified epoxy primer. It is a high-performance corrosion inhibiting primer and has been used in many commercial aircraft built since its introduction. BR 127 primer can be used with essentially all 250°F (121°C) film adhesives and has been designed to provide optimal structural performance at temperatures ranging from -67°F to 300°F (-55°C to 149°C). 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 4 hours at 180°F (82°C) to 30 minutes at 250°F (121°C). 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 85°F (29°C) 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 200°F to 350°F (93°C to 177°C) with minimum pressures to assure proper mating of bonded details.

Features & Benefits:

  • Industry-wide standard for corrosion resistant primers
  • Prevents hydrolysis of oxide layers
  • Structural performance from -67°F to 300°F (-55°C to 149°C)
  • Compatible with a wide variety of adhesive systems
  • Improves hydrolytic stability at the adhesive-to-metal interface
  • Protects prepared surfaces from further oxidation

Information provided by Cytec, subsequently acquired by Solvay.

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Physical PropertiesOriginal ValueComments
Density 0.875 g/cc
Solids Content 9.0 - 11 %sprayable
Volatile Organic Compounds (VOC) Content 792 g/l
Outgassing - Total Mass Loss 0.48 %
Collected Volatile Condensable Material 0.030 %
Storage Temperature -18.0 °C
 
Mechanical PropertiesOriginal ValueComments
Shear Strength 5680 psiLap, Initial
 4480 psi
@Time 1.56e+7 sec
Lap
 4970 psi
@Time 7.78e+6 sec
Lap
 5890 psi
@Time 2.59e+6 sec
Lap
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 150 °CStructural performance
Minimum Service Temperature, Air -55.0 °CStructural performance
 
Processing PropertiesOriginal ValueComments
Shelf Life 12.0 Month
 
Descriptive Properties
ColorYellow

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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