Analysis of Terpolymerization Systems for the Development of Carbon Fiber Precursors of PAN

Table 3

Conditions for the thermal stabilization of fibers.

Test	Temperature (°C)	Time (min)
1	200	20
2	220	20
3^a	200, 220	20, 20

^aThis test was done in two steps: in the first step, a sample of fiber was thermally treated at 200°C for 20 min. In the second step, the sample of fiber treated at 200°C was again treated at 220°C for 20 min.