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Nitrogen-doped graphene oxide (GO), namely, NG, was prepared by o-phenylenediamine (OPD) grafting onto GO. The structure and morphology of NG were characterized by FITR, XRD, SEM, EDS, Raman spectroscopy, and TGA. OPD was linked to the GO surface by covalent bonds, and the absorption peak of the C=N bond in the phenazine structure was identified in the FITR spectra. The aging resistance properties of nitrile-butadiene rubber (NBR)-NG composites was investigated by mechanical testing, before and after aging. The resistance of the NBR/NG composites with the addition of 3 phr NG fillers was the highest. The aging mechanism was investigated by TGA-DSC, DMA, equilibrium swelling testing, and ATR-FTIR. The results showed that NG could effectively inhibit chain cross-linking in NBR.

Abstractα‐Zirconium phosphate (α‐ZrP) is intercalated by 4‐aminodiphenylamine (RT) through cation exchange, and its product is named ZrP‐RT. The structure and morphology is characterized by FTIR, XRD, and SEM. RT intercalates into the α‐ZrP layer and RT has monolayer and bilayer permutations in the layer. ZrP‐RT is incorporated into nitrile butadiene rubber (NBR) through mechanical blending, namely, NBR/ZT composites. The compatibility of ZrP‐RT and NBR is investigated by the contact angle test with water of ZrP‐RT, the fracture surface, and XRD of NBR/ZT composites. The introduction of RT significantly increases the dispersion of α‐ZrP in NBR. The aging resistance properties of NBR/ZT composites are tested by mechanical test. The antiaging effect of ZrP‐RT is better than commercial antioxidant. The aging mechanism of NBR/ZT is explored by DMA, equilibrium swelling test, and ATR‐FTIR. It indicates that ZrP‐RT can effectively inhibit the chain crosslink of NBR.

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