Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites
Hypothesis: Polyamide 6 (PA6)/nitrile butadiene rubber (NBR) thermoplastic elastomer reinforced by nanoparticles has several applications in various industries. The addition of nanoparticles to thermoplastic elastomers will affect the tensile strength, impact strength, fracture mechanism and thermal...
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Iran Polymer and Petrochemical Institute
2020-06-01
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| Series: | علوم و تکنولوژی پلیمر |
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| Online Access: | http://jips.ippi.ac.ir/article_1732_fa66daa35e5abae3d4f1665e3ad2b99c.pdf |
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| author | Mohammad Reza Nakhaei Ghasem Naderi Mir Hamid Reza Ghoreishy |
| author_facet | Mohammad Reza Nakhaei Ghasem Naderi Mir Hamid Reza Ghoreishy |
| author_sort | Mohammad Reza Nakhaei |
| collection | DOAJ |
| description | Hypothesis: Polyamide 6 (PA6)/nitrile butadiene rubber (NBR) thermoplastic elastomer reinforced by nanoparticles has several applications in various industries. The addition of nanoparticles to thermoplastic elastomers will affect the tensile strength, impact strength, fracture mechanism and thermal properties of nanocomposites. There are different processes to fabricate these nanocomposites such as extruder, internal mixer, and friction stir process.Methods: PA6/NBR/clay nanocomposites were fabricated by internal mixer (IM) and friction stir process (FSP). The mechanical properties and fracture mechanisms of these nanocomposites were investigated by mechanical testing (tensile, impact, and hardness) and essential work of fracture (EWF) methodology. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the morphology of samples.Finding: The results indicated that with addition of nanoclay up to 5% in an elastomer containing internal mixer, the tensile strength increased, and beyond 5%, the tensile strength decreased. The friction stir process sample with 7% nanoclay showed a maximum tensile strength of 35.4 MPa. In the friction stir process sample with 7% nanoclay, the tensile modulus and total work of fracture, respectively, increased by 75% and 56%, while in the internal mixer sample, the modulus increased by 50% and total work of fracture decreased by 5%. With the addition of 7% nanoclay to PA6/NBR blend, the impact strength of friction stir process and internal mixer samples decreased by 4 and 18%, respectively. The addition of 7% nanoclay to PA6/NBR blend with friction stir process improved the thermal behavior as the crystallization temperature and melting temperature increased from 195.3 to 197.1°C and 221.3 to 222.5°C, respectively. |
| first_indexed | 2024-12-18T23:54:18Z |
| format | Article |
| id | doaj.art-4a65ac3994fe49dcb6a24b7785ce2c0c |
| institution | Directory Open Access Journal |
| issn | 1016-3255 2008-0883 |
| language | fas |
| last_indexed | 2024-12-18T23:54:18Z |
| publishDate | 2020-06-01 |
| publisher | Iran Polymer and Petrochemical Institute |
| record_format | Article |
| series | علوم و تکنولوژی پلیمر |
| spelling | doaj.art-4a65ac3994fe49dcb6a24b7785ce2c0c2022-12-21T20:46:46ZfasIran Polymer and Petrochemical Instituteعلوم و تکنولوژی پلیمر1016-32552008-08832020-06-0133215917210.22063/jipst.2020.17321732Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay NanocompositesMohammad Reza Nakhaei0Ghasem Naderi1Mir Hamid Reza Ghoreishy2Facility of Mechanics and Energy, Shahid Beheshti University, P.O. Box 16589-5357, Tehran, IranDepartment of Rubber Processing and Engineering, Faculty of Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14975-112, Tehran, IranDepartment of Rubber Processing and Engineering, Faculty of Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14975-112, Tehran, IranHypothesis: Polyamide 6 (PA6)/nitrile butadiene rubber (NBR) thermoplastic elastomer reinforced by nanoparticles has several applications in various industries. The addition of nanoparticles to thermoplastic elastomers will affect the tensile strength, impact strength, fracture mechanism and thermal properties of nanocomposites. There are different processes to fabricate these nanocomposites such as extruder, internal mixer, and friction stir process.Methods: PA6/NBR/clay nanocomposites were fabricated by internal mixer (IM) and friction stir process (FSP). The mechanical properties and fracture mechanisms of these nanocomposites were investigated by mechanical testing (tensile, impact, and hardness) and essential work of fracture (EWF) methodology. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the morphology of samples.Finding: The results indicated that with addition of nanoclay up to 5% in an elastomer containing internal mixer, the tensile strength increased, and beyond 5%, the tensile strength decreased. The friction stir process sample with 7% nanoclay showed a maximum tensile strength of 35.4 MPa. In the friction stir process sample with 7% nanoclay, the tensile modulus and total work of fracture, respectively, increased by 75% and 56%, while in the internal mixer sample, the modulus increased by 50% and total work of fracture decreased by 5%. With the addition of 7% nanoclay to PA6/NBR blend, the impact strength of friction stir process and internal mixer samples decreased by 4 and 18%, respectively. The addition of 7% nanoclay to PA6/NBR blend with friction stir process improved the thermal behavior as the crystallization temperature and melting temperature increased from 195.3 to 197.1°C and 221.3 to 222.5°C, respectively.http://jips.ippi.ac.ir/article_1732_fa66daa35e5abae3d4f1665e3ad2b99c.pdfnanocompositepolyamide 6/nitrile butadiene rubberfracture mechanismtensile strengthimpact strength |
| spellingShingle | Mohammad Reza Nakhaei Ghasem Naderi Mir Hamid Reza Ghoreishy Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites علوم و تکنولوژی پلیمر nanocomposite polyamide 6/nitrile butadiene rubber fracture mechanism tensile strength impact strength |
| title | Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites |
| title_full | Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites |
| title_fullStr | Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites |
| title_full_unstemmed | Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites |
| title_short | Experimental Investigation of Mechanical Properties, Fracture Mechanism and Crack Propagation of PA6/NBR/Clay Nanocomposites |
| title_sort | experimental investigation of mechanical properties fracture mechanism and crack propagation of pa6 nbr clay nanocomposites |
| topic | nanocomposite polyamide 6/nitrile butadiene rubber fracture mechanism tensile strength impact strength |
| url | http://jips.ippi.ac.ir/article_1732_fa66daa35e5abae3d4f1665e3ad2b99c.pdf |
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