0.09
Anomaly below the natural frequency in a crystalline polymer
0.08
Tan δ
0.07
0.06
60 mins 75 mins 105 mins 120 mins 150 mins 180 mins 210 mins no strain
Torsion of polyethylene with .035 residual strain at 23 oC
0.05
0.04
0.03 1000
1500
2000
Frequency (Hz)
2500
3000
