Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend
In this study, the effects of NBR polarity and organoclay addition on the curing, rheological, mechanical, and thermal properties of an NBR/phenolic resin blend were investigated. The samples were prepared using a two-roll mill. The results showed that rheological and tensile properties improved due...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/7/1463 |
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| author | Sara Shafiee Leila Bazli Mohammad Karrabi Mir Hamid Reza Ghoreishy Milad Bazli |
| author_facet | Sara Shafiee Leila Bazli Mohammad Karrabi Mir Hamid Reza Ghoreishy Milad Bazli |
| author_sort | Sara Shafiee |
| collection | DOAJ |
| description | In this study, the effects of NBR polarity and organoclay addition on the curing, rheological, mechanical, and thermal properties of an NBR/phenolic resin blend were investigated. The samples were prepared using a two-roll mill. The results showed that rheological and tensile properties improved due to the good distribution of nanoparticles, as well as the good compatibility of nitrile butadiene rubber with phenolic resin. The addition of 1.5 phr of nanoparticles to blends containing 33% and 45% acrylonitrile increased the curing torque difference by approximately 12% and 28%, respectively. In addition, the scorch time and curing time decreased in nanocomposites. Adding nanoparticles also increased the viscosity. The addition of phenolic resins and nanoparticles has a similar trend in modulus changes, and both of these factors increase the stiffness and, consequently, the elastic and viscous modulus of the specimens. Adding 1.5 phr of organoclay increased the tensile strength of the blends by around 8% and 13% in the samples with low and high content of acrylonitrile, respectively. Increasing the temperature of the tensile test led to a reduction in the tensile properties of the samples. Tensile strength, elongation at break, modulus, and hardness of the samples increased with increasing organoclay content. In addition, with increasing nanoparticle concentration, the samples underwent lower deterioration in tensile strength and Young’s modulus at different temperatures compared to the blends. In the samples containing 1.5 phr of organoclay, the thermal decomposition temperatures were enhanced by around 24 and 27 °C for low and high acrylonitrile content. |
| first_indexed | 2024-03-09T11:29:28Z |
| format | Article |
| id | doaj.art-5fad4b6504c84d54a955c10d8f60297b |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T11:29:28Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-5fad4b6504c84d54a955c10d8f60297b2023-11-30T23:54:48ZengMDPI AGPolymers2073-43602022-04-01147146310.3390/polym14071463Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin BlendSara Shafiee0Leila Bazli1Mohammad Karrabi2Mir Hamid Reza Ghoreishy3Milad Bazli4Rubber Group, Processing Department, Iran Polymer and Petrochemical Institute, Tehran 1497713115, IranRubber Group, Processing Department, Iran Polymer and Petrochemical Institute, Tehran 1497713115, IranRubber Group, Processing Department, Iran Polymer and Petrochemical Institute, Tehran 1497713115, IranRubber Group, Processing Department, Iran Polymer and Petrochemical Institute, Tehran 1497713115, IranCollege of Engineering, IT and Environment, Charles Darwin University, Darwin 0801, AustraliaIn this study, the effects of NBR polarity and organoclay addition on the curing, rheological, mechanical, and thermal properties of an NBR/phenolic resin blend were investigated. The samples were prepared using a two-roll mill. The results showed that rheological and tensile properties improved due to the good distribution of nanoparticles, as well as the good compatibility of nitrile butadiene rubber with phenolic resin. The addition of 1.5 phr of nanoparticles to blends containing 33% and 45% acrylonitrile increased the curing torque difference by approximately 12% and 28%, respectively. In addition, the scorch time and curing time decreased in nanocomposites. Adding nanoparticles also increased the viscosity. The addition of phenolic resins and nanoparticles has a similar trend in modulus changes, and both of these factors increase the stiffness and, consequently, the elastic and viscous modulus of the specimens. Adding 1.5 phr of organoclay increased the tensile strength of the blends by around 8% and 13% in the samples with low and high content of acrylonitrile, respectively. Increasing the temperature of the tensile test led to a reduction in the tensile properties of the samples. Tensile strength, elongation at break, modulus, and hardness of the samples increased with increasing organoclay content. In addition, with increasing nanoparticle concentration, the samples underwent lower deterioration in tensile strength and Young’s modulus at different temperatures compared to the blends. In the samples containing 1.5 phr of organoclay, the thermal decomposition temperatures were enhanced by around 24 and 27 °C for low and high acrylonitrile content.https://www.mdpi.com/2073-4360/14/7/1463nitrile butadiene rubberphenolic resinrheologynanoparticlesorganoclaythermal stability |
| spellingShingle | Sara Shafiee Leila Bazli Mohammad Karrabi Mir Hamid Reza Ghoreishy Milad Bazli Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend Polymers nitrile butadiene rubber phenolic resin rheology nanoparticles organoclay thermal stability |
| title | Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend |
| title_full | Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend |
| title_fullStr | Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend |
| title_full_unstemmed | Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend |
| title_short | Effect of Organoclay Addition on Rheological, Thermal, and Mechanical Properties of Nitrile Rubber/Phenolic Resin Blend |
| title_sort | effect of organoclay addition on rheological thermal and mechanical properties of nitrile rubber phenolic resin blend |
| topic | nitrile butadiene rubber phenolic resin rheology nanoparticles organoclay thermal stability |
| url | https://www.mdpi.com/2073-4360/14/7/1463 |
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