Influences of different dimensional carbon-based nanofillers on fracture and fatigue resistance of natural rubber composites |
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| Institution: | 1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;2. Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China;1. LMS, Ecole Polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France;2. Laboratoire PIMM, ENSAM, CNRS, CNAM, 151 bd de l’Hôpital, 75013 Paris, France;1. The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou, 510640, China;2. College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China;3. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China;1. INTI, CONICET, Centro de Caucho, Av. General Paz 5445, B1650WAB San Martín, Argentina;2. Laboratorio de Polímeros y Materiales Compuestos, Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina;3. IFIMAT (UNCPBA) and CIFICEN (UNCPBA-CONICET-CICPBA), Pinto 399, B7000GHG Tandil, Argentina;1. Concordia Centre for Composites (CONCOM), Department of Mechanical and Industrial Engineering, Concordia University, 1455 De Maisonneuve Blvd.W., Montreal, Quebec H3G1M8, Canada;2. Center for Applied Research on Polymers and Composites (CREPEC), Quebec, Canada |
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| Abstract: | The dimensions of reinforcing filler is a key factor in influencing the fracture and fatigue of rubbers. Here, the fracture and fatigue resistance of natural rubber (NR) filled with different dimensional carbon-based fillers including zero-dimensional spherical carbon black (CB), one-dimensional fibrous carbon nanotubes (CNTs) and two-dimensional planar graphene oxide (GO) were explored. To obtain equal hardness, a control indicator in the rubber industry, the amounts of CB, CNTs, and GO were 10.7 vol%, 1.2 vol%, and 1.6 vol%, respectively. J-integral and dynamic fatigue tests revealed that NR filled with CB exhibited the best quasi-static fracture resistance and dynamic crack growth resistance. The much higher hysteresis loss of NR filled with CNTs weakened its fatigue resistance. The planar GO played a limited role in preventing crack growth. Furthermore, digital image correlation revealed that NR filled with CB had the highest strain amplification level and area at the crack tip, which dissipated the most local input energy and then improved the fracture and fatigue performance. |
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| Keywords: | Carbon-based nanofiller Dimensional factor Natural rubber Fatigue and fracture resistance Strain amplification |
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