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Materials 2018, 11(5), 836; https://doi.org/10.3390/ma11050836

Aging-Resistant Functionalized LDH–SAS/Nitrile-Butadiene Rubber Composites: Preparation and Study of Aging Kinetics/Anti-Aging Mechanism

1
School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China
2
Institut für Physik, Universität Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany
*
Authors to whom correspondence should be addressed.
Received: 4 April 2018 / Revised: 13 May 2018 / Accepted: 15 May 2018 / Published: 18 May 2018

Abstract

With the aim of improving the anti-aging properties of nitrile-butadiene rubber (NBR), a functional organic filler, namely LDH–SAS, prepared by intercalating 4-amino-benzenesulfonic acid monosodium salt (SAS) into layered double hydroxides (LDHs) through anion exchange, was added to nitrile-butadiene rubber (NBR), giving the NBR/LDH–SAS composites. Successful preparation of LDH–SAS was confirmed by XRD, TGA and FTIR. LDH–SAS was well dispersed in the NBR matrix, owing to its strong interaction with the nitrile group of NBR. The obtained NBR/LDH–SAS composites exhibited excellent thermo-oxidative aging resistance as shown by TGA-DSC. Further investigation by ATR-FTIR indicated that SAS can capture the radical groups, even during the aging process, which largely accounts for the improved aging resistance. View Full-Text
Keywords: layered double hydroxides (LDHs); nitrile-butadiene rubber (NBR); 4-Amino-benzenesulfonic acid monosodium salt (SAS); thermal oxidative aging resistance properties layered double hydroxides (LDHs); nitrile-butadiene rubber (NBR); 4-Amino-benzenesulfonic acid monosodium salt (SAS); thermal oxidative aging resistance properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Li, T.; Shi, Z.; He, X.; Jiang, P.; Lu, X.; Zhang, R.; Wang, X. Aging-Resistant Functionalized LDH–SAS/Nitrile-Butadiene Rubber Composites: Preparation and Study of Aging Kinetics/Anti-Aging Mechanism. Materials 2018, 11, 836.

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