Synthesis and Characteristics of Functionalized Carbon Nanofibers/HNBR Rubber Composite
Hyun-Ho Park1, Duk-Hwan Cho2 and Chang-Seop Lee1
1Department of Chemistry, Keimyung University 1095 Dalgubeol-daero Dalseo-Gu, Daegu, 42601 Republic of Korea; 2Gumgang Altech Cooperation, Ltd., Daegu, 42710 Republic of Korea
Abstract: Rubber composite materials were prepared by adding various contents of carbon nanofiber reinforcing materials functionalized with amine groups to HNBR rubber matrix. Effects of the addition of functionalized carbon nanofibers on improvement of physical properties were investigated by measuring basic properties, heat resistance, oil resistance, and compression sets of these composite materials. Results showed that mechanical properties such as tensile strength and elongation were substantially improved when 7 phr of functionalized carbon nanofibers were added to rubber composite materials. In addition, tensile stress which was 100% modulus was improved as much as other properties. Heat resistance, oil resistance, and high-temperature compression sets were improved for carbon nanofibers functionalized with amine groups in comparison with virgin HNBR rubber materials. In conclusion, the optimum content of carbon nanofibers for HNBR is 7 phr within the measurement range.
Keywords: Carbon nanofiber, HNBR, Rubber composite, Amine, Surface modification.