Research Article

Tailoring the Curing Kinetics of NBR-Based Rubber Compounds for Additive Manufacturing of Rod Seals

Table 6

Numerical values of tensile tests of S2 specimens (from 3D-printing, recipe #3, Batch 3) after vulcanization at 160°C are compared with the results of conventional heat press.

Sample/test directionMaximum strength (MPa)Elongation at break (%)Stress at 50% strain (MPa)

Heated press (conventional)18.0 ± 0.5261.4 ± 16.63.2 ± 0.1
0° to printing direction16.0 ± 0.3282.1 ± 14.12.2 ± 0.1
90° to printing direction9.2 ± 1.0167.7 ± 15.22.0 ± 0.1

The data are based on the median values of a test series each of n = 10.