Reinforcement of acrylonitrile butadiene rubber using pristine few layer graphene and its hybrid fillers |
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| Affiliation: | 1. School of Nanoscience and Technology, National Institute of Technology, Calicut, India;2. Propellant Engineering Division, Vikram Sarabhai Space Centre, Thiruvananthapuram, India;3. Polymers and Special Chemicals Division, Vikram Sarabhai Space Centre, Thiruvananthapuram, India;1. Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China;2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China;3. Department of Chemistry, Xi''an Jiaotong-Liverpool University, Suzhou 215123, China;4. Key Laboratory of C & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China;1. Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China;2. Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan, 430074, China;3. Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China;4. Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, Guangzhou, 510641, China;5. National Engineering Research Center of Novel Equipment for Polymer Processing, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510641, China;1. Laboratory of Polymer Technology, Dept. of Chemical Engineering & Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;2. Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands;3. LANXESS Elastomers R&D, P.O. Box 185, 6160 AD Geleen, The Netherlands;4. Laboratory of Materials and Interface Chemistry, Dept. of Chemical Engineering & Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;1. Advanced Composites Centre for Innovation and Science, Queen’s Building, University of Bristol, Bristol BS8 1TR, UK;2. Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK |
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| Abstract: | Unfunctionalized few layer graphene (FLG) nanoplatelets were mixed with acrylonitrile butadiene rubber (NBR) by melt mixing and the properties were compared with composites containing carbon black alone and a 1:1 mixture of FLG and carbon black. Incorporation of a very small amount of FLG significantly improved the cure characteristics of NBR. Compared to graphene, similar loading of carbon black gave higher rheometer torque at the expense of scorch safety whereas hybrid filler gave optimum cure characteristics. There was more than 190% improvement in tensile strength when 5 phr FLG was added to the matrix. On the other hand, to achieve the same strength, five times more of carbon black was needed compared to FLG. In contrast to carbon black, FLG increased the compression set of the rubber. The compositions containing 1:1 mixture of the fillers displayed compression set values in between those containing FLG or carbon black alone. The storage modulus was also found to be optimum for the composites containing equal amounts of FLG and carbon black. FLG loaded composites displayed significant reduction in the creep compliance. Additionally, the helium leak rate of the composites was decreased in presence of FLG due to its platelet structure. |
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