Table 4.

Thermal lifetime of PVDF in different conditions and times of exposition as obtained for different failure temperatures.

Unaged PVDF
Tf (°C)	Tf (K)	tf (years)	Log tf (years)
25	298	3.6 × 1017	17.6
60	333	1.4 × 1014	14.1
130	403	1.2 × 109	9.1
Aged 30 days in bioethanol
25	298	2.0 × 1015	15.3
60	333	1.8 × 1012	12.3
130	403	6.0 × 107	7.8
Aged 90 days in bioethanol
25	298	8.5 × 1012	12.9
60	333	2.1 × 1010	10.3
130	403	3.1 × 106	6.5
Annealed 90 days (sample 1)
25	298	1.2 × 1018	18.1
60	333	4.2 × 1014	14.6
130	403	6.3 × 109	9.8
Annealed 90 days (sample 2)
25	298	2.2 × 1018	18.3
60	333	7.0 × 1014	14.8
130	403	9.7 × 109	10.0