Optimization of mechanical properties of polypropylene/talc/graphene composites using response surface methodology |
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| Affiliation: | 1. Faculty of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran;2. Department of Plastics, Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran;3. Faculty of Mechanical Engineering, Malek Ashtar University of Technology, Tehran, Iran;4. Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 33535111, Tehran, Iran;1. School of Mechanical, Aerospace and Civil Engineering, United Kingdom;2. North West Composites Centre, School of Materials, The University of Manchester, Manchester M13 9PL, United Kingdom;1. State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China;2. Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, College of Materials and Chemical Engineering, Hainan University, Haikou, 570028, China;3. School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China;1. College of Science, Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing, China;2. Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing, China;3. Chinese Academy of Inspection and Quarantine, Beijing, China;1. Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran;2. Department of Mechanical Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran;3. Faculty of Mechanical Engineering, K.N.Toosi University of Technology, Tehran, Iran;1. Research Division of Green Function Materials and Equipment, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR China;2. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong, PR China;1. State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, PR China;2. Laboratory for Synthetic Resin Research, Petrochina Petrochemical Research Institute, Beijing, 102200, PR China;3. Lanzhou Petrochemical Corporation, China National Petroleum Corporation (CNPC), Lanzhou, 730060, PR China |
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| Abstract: | This paper investigated the reinforcing effects of a hybrid filler, including talc and exfoliated graphene nanoplatelets (xGnPs), in polypropylene (PP) composites. In order to increase the interphase adhesion, maleic anhydride grafted polypropylene (MAPP) was added as a compatibilizing agent to the PP/talc/xGnP composites. The experiments were designed according to response surface methodology (RSM) to optimize the effects of three variable parameters, namely talc, MAPP and xGnP, on the mechanical properties. In the sample preparation, three levels of filler loading were used for talc (0, 15, 30 wt%), xGnP (0, 0.75, 1.5 wt%) and MAPP (0, 2, 4 wt%). From the analysis of variance (ANOVA), it was found that the talc and xGnP play a significant role in the mechanical properties and morphology of the composites, as proven by scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). In order to simultaneously maximize these mechanical properties, the desirable values of the additives were predicted to be 30 wt% for talc, 4 wt% for MAPP and 0.69 wt% for xGnP. The obtained normal probability plots indicated good agreement between the experimental results and those predicted by the RSM models. |
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| Keywords: | Talc Mechanical properties Response surface method Exfoliated graphene nanoplatelets |
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