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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Compound no.</td><td class="align_center">Vulcanization time <i>t</i><sub>90</sub> (s)</td><td class="align_center">Scorch time <i>t</i><sub>10</sub> (s)</td><td class="align_center">Maximum torque S´ (dNm)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1 (#1, Batch 3)</td><td class="align_center">302</td><td class="align_center">72</td><td class="align_center">28.8</td></tr><tr><td class="align_left">2 (Extended #1 Stearic acid)</td><td class="align_center">277</td><td class="align_center">84</td><td class="align_center">27.8</td></tr><tr><td class="align_left">3 (Stearic acid + CBS)</td><td class="align_center">332</td><td class="align_center">94</td><td class="align_center">23.6</td></tr><tr><td class="align_left">4 (Stearic acid + DCBS)</td><td class="align_center">364</td><td class="align_center">91</td><td class="align_center">25.3</td></tr><tr><td class="align_left">5 (Stearic acid + DCBS + CTP)</td><td class="align_center">409</td><td class="align_center">102</td><td class="align_center">25.4</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Optimization of the curing system: effect of curing system composition on the vulcanization time <i>t</i><sub>90</sub>, scorch time <i>t</i><sub>10</sub> and maximum torque in the rheometer at 160°C by changing the accelerator type and concentration.</div>

Advances in Polymer Technology

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Table 4

Table 4: Tailoring the Curing Kinetics of NBR-Based Rubber Compounds for Additive Manufacturing of Rod Seals 