Barium Titanate-reinforced Acrylonitrile-Butadiene Rubber: Synergy Effect of Carbon-based Secondary Filler |
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Authors: | Chueangchayaphan Wannarat Luangchuang Piyawadee Chueangchayaphan Narong Sulaiman Muhammad Azwadi Nakaramontri Yeampon |
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Affiliation: | 1.Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, 84000, Surat Thani, Thailand ;2.Advanced Materials Research Cluster, Faculty Bioengineering and Technology, Universiti Malaysia Kelantan, 17600, Jeli, Kelantan, Malaysia ;3.Sustainable Polymer & Innovative Composite Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, 10140, Bangkok, Thailand ; |
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Abstract: | Acrylonitrile rubber(NBR) composites filled with barium titanate(BT) were prepared using an internal mixer and a two-roll mill. Also, a secondary filler, namely carbon nanotubes(CNT), was added in order to find a potential synergistic blend ratio of BT and CNT. The cure characteristics, tensile and dielectric properties(dielectric constant and dielectric loss) of the composites were determined. It was found that NBR/BT composites with CNT secondary filler, at a proper BT:CNT ratio, exhibited shorter scorch time(t_(s1)) and cure time(t_(c90)) together with superior tensile properties and reinforcement efficiency, relative to the one with only the primary filler. In addition, the NBR/BT-CNT composite with 80 phr BT and 1-2 phr CNT had dielectric constant of 100-500, dielectric loss of 12-100 and electrical conductivity below 10~(-4) S/m together with high thermal stability. Thus, with a proper BT:CNT mix and filler loading, we can produce mechanically superior rubber composites that are easy to process and low-cost, for flexible dielectric materials application. |
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Keywords: | Acrylonitrile-butadiene rubber Barium titanate Carbon nanotube Dielectric properties Mechanical properties |
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