• 文献标题:   Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide
  • 文献类型:   Article
  • 作  者:   ZHONG R, ZHANG Z, ZHAO HG, HE XR, WANG X, ZHANG R
  • 作者关键词:   graphene oxide go, pphenylenediamine ppd, nitrile rubber nbr, thermooxidative stability
  • 出版物名称:   MATERIALS
  • ISSN:   1996-1944
  • 通讯作者地址:   Southwest Petr Univ
  • 被引频次:   3
  • DOI:   10.3390/ma11060921
  • 出版年:   2018

▎ 摘  要

Graphene oxide (GO), modified with anti-aging agent p-phenylenediamine (PPD), was added into nitrile rubber (NBR) in order to improve the thermo-oxidative stability of NBR. The modification of GO and the transformation of functional groups were characterized by Fourier transform infrared spectroscopy (FTIR), Raman, and X-ray diffraction (XRD). Mechanical performances of NBR composites before and after the thermo-oxidative aging were recorded. The results of dynamic mechanical analysis (DMA) show an increased storage modulus (G') and a decreased value of area of tan peak after introducing modified GO into NBR. It indicates that filler particles show positive interaction with molecular chains. The thermo-oxidative stability of composites was investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). Then, the thermo-oxidative aging kinetic parameters were obtained by the Flynn-Wall-Ozawa (FWO) equation. The results of aging tests show that the thermo-oxidative stability of rubber matrix increases obviously after introducing GO-PPD. In addition, mechanical properties (tensile strength and elongation at break) of both before and after aged NBR/GO-PPD composites were superior to that of NBR. This work provides meaningful guidance for achieving multifunction thermo-oxidative aging resistance rubber composites.