ABRON – PIR 15
ABRON PIR-15 resin system has been developed for the manufacture of advanced composites for Space, Aerospace & Defense applications. This Polyimide based polymer can be used as a matrix material at temperatures upto 316oC continuous applications and short excursions upto 361oC. Of all the High Temperature materials this polyimide displays exceptional behavior in terms of processing properties, thermo-oxidative stability and retention of mechanical properties at temperatures in the 300oC – 316oC range.
The main applications of this resin system is in the manufacture of composites for aircraft industry for engine ducts, fan blades, inner cowls, swirl frames, nozzle flaps & fins and bodies of missiles, etc.
The resin system consists of three solutions ( 50 % solid loading in Methanol ) which have to be mixed ( under specific conditions and ratios ), before use. The resin can be used for making prepregs, filament winding or moulding.
SPECIFICATIONS OF THE MONOMERS
| ABRON PIR-15 Part A: | |
| Colour | : Honey Red |
| Specific Gravity | : 1.0 – 1.06 |
| Viscosity ( Ford B4 Cup ) | : 12 – 16 sec |
| ABRON PIR-15 Part B: | |
| Colour | : Light – Dark Brown |
| Specific Gravity | : 0.750 – 0.95 |
| Viscosity ( Ford B4 Cup ) | : 10 – 15 sec |
| ABRON PIR-15 Part C: | |
| Colour | : Light Yellow |
| Specific Gravity | : 0.085 – 1.05 |
| Viscosity ( Ford B4 Cup ) | : 10 – 14 sec |
| Typical Quantities for 10 kg resin solution : | |
| ABRON PIR-15 Part A : 4.452 kgs ABRON PIR-15 Part B : 3.381 Kgs ABRON PIR-15 Part C : 2.167 kgs |
STORAGEStore all the three parts in deep freezer for long storage, separately.
General Procedure for the preparation of the resin solution :
Keep all the three solutions at RT for couple of hours, until the contents attain RT or ~ 25oC. Take ABRON PIR-15 Part A into a clean, dry RB flask fitted with an agitator, condenser, thermo well & heating mantle. Place a Calcium Chloride guard tube on the condenser and start agitation. While under agitation, add ABRON PIR-15 Part B into it. Heat upto 45oC and stir ( under dry conditions ) for 90 minutes. To this solution add ABRON PIR-15 Part C and further agitate ( at 45oC ) for 60 minutes. Cool to room temperature and use immediately.
NOTE
It is very critical to use the exact weight ratios of individual solutions & also the sequence ( as mentioned above ) to prepare the solution, in order to get the appropriate properties.