Research Article
Tailoring the Curing Kinetics of NBR-Based Rubber Compounds for Additive Manufacturing of Rod Seals
Table 1
Reference recipe #1 and final recipes after optimization.
| | Ingredients | #1 Reference recipe (phr) | #2 Simply adopted recipe with CTP (phr) | #3 Fundamentally optimized recipe (phr) |
| | NBR (Krynac 3330 F) | 100 | 100 | 100 | | Carbon black (N772) | 100 | 100 | 100 | | Plasticizer (Struktol TS 35) | 5 | 5 | 5 | | Activator (ZnO) | 3 | 3 | 3 | | Activator (Stearic acid) | 0 | 0 | 1 | | Antioxidant (6PPD)a | 2 | 2 | 2 | | Antioxidant (TMQ)b | 1 | 1 | 1 | | Processing aid (Struktol WB222) | 1.5 | 1.5 | 1.5 | | Accelerator (TBzTD)c | 3 | 3 | 3 | | Sulfur donor (CLDd GR80) | 1 | 1 | 0 | | Accelerator (MBTS)e | 1.5 | 1.5 | 0 | | Sulfur preparation (Struktol SU 105) | 1.6 | 1.6 | 1.6 | | Accelerator (DCBS)f | – | – | 2 | | Retarder (CTP)g | – | 1 | 0.25 |
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a6PPD, N-(1,3-Dimethylbutyl)-N’-phenyl-pphenylenediamine; bTMQ, 2,2,4-trimethyl-1,2-dihydroquinoline; cTBzTD, Tetrabenzylthiuram disulfide; dCLD, Caprolactam disulfide; eMBTS, Dibenzothiazyl disulfide; fDCBS, N,N-Dicyclohexyl-2-Benzothiazole sulfenamide; gCTP, N-cyclohexylthiophthalimide.
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