Research Article

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

Table 4

Optimization of the curing system: effect of curing system composition on the vulcanization time t90, scorch time t10 and maximum torque in the rheometer at 160°C by changing the accelerator type and concentration.

Compound no.Vulcanization time t90 (s)Scorch time t10 (s)Maximum torque S´ (dNm)

1 (#1, Batch 3)3027228.8
2 (Extended #1 Stearic acid)2778427.8
3 (Stearic acid + CBS)3329423.6
4 (Stearic acid + DCBS)3649125.3
5 (Stearic acid + DCBS + CTP)40910225.4