Compressive properties of PBXN-5 and PBXW-11 before and after ageing at 60 °C for 3 and 6 months

PBXW-11 and PBXN-5 have been tested in uniaxial compressive test at room temperature according to STANAG 4443. PBXW-11 shows moderate changes in compressive mechanical properties due to ageing for up to 6 months at 60oC. Obtained mechanical compressive properties for not aged samples are; max stress 0.80+0.03 MPa, strain at max stress 4.87+0.16 % and Emodulus 29.8+2.1 MPa. For PBXN-5 strain at max stress does not change by ageing, however both max stress and Emodulus decrease with age. Max stress goes from 7.33+0.24 MPa for not aged pellets to 6.60+0.22 and 6.04+0.32 MPa for pellets aged at 60oC for respectively 3 and 6 months. Corresponding E-modulus goes from 206.5+12.0 MPa for not aged pellets to 167.7+10.0 MPa for pellets aged for 6 months at 60oC. Stress at max stress 5.88+0.16 % for not aged pellets change to 5.78+0.15 % for pellets aged for 6 months at 60oC.