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

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Recipe</td><td class="align_center">Activation energy <i>E</i><sub>A</sub> (kJ⋅mol<sup>−1</sup>)</td><td class="align_center">Speed constant <i>k</i> at 160°C (min<sup>−1</sup>)</td><td class="align_center">Coefficient of determination <i>R</i><sup>2</sup></td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">#1: Reference</td><td class="align_center">72.0</td><td class="align_center">−1.58</td><td class="align_center">0.993</td></tr><tr><td class="align_left">#2: Optimized with 1 phr CTP</td><td class="align_center">78.6</td><td class="align_center">−0.97</td><td class="align_center">0.996</td></tr><tr><td class="align_left">#3: Optimized by exchanging the curing system</td><td class="align_center">82.4</td><td class="align_center">−0.62</td><td class="align_center">1.000</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Activation energy and rate constant of unoptimized and optimized recipes.</div>

Advances in Polymer Technology

tab5

Table 5

Table 5: Tailoring the Curing Kinetics of NBR-Based Rubber Compounds for Additive Manufacturing of Rod Seals 