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Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates
The influence of carbon black on physical mechanical properties, compressive fatigue life, and the temperature changes during compression fatigue process of styrene-butadiene rubber (SBR) vulcanizates were explored. A series of unfilled and filled SBR compounds were prepared, and the compressive fat...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125102/ https://www.ncbi.nlm.nih.gov/pubmed/34066634 http://dx.doi.org/10.3390/polym13091497 |
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author | Yang, Liu Wang, Lin Guo, Huaiqing Du, Aihua |
author_facet | Yang, Liu Wang, Lin Guo, Huaiqing Du, Aihua |
author_sort | Yang, Liu |
collection | PubMed |
description | The influence of carbon black on physical mechanical properties, compressive fatigue life, and the temperature changes during compression fatigue process of styrene-butadiene rubber (SBR) vulcanizates were explored. A series of unfilled and filled SBR compounds were prepared, and the compressive fatigue behaviors of the vulcanizates were performed on a mechanical testing and simulation (MTS) machine. The top surfaces of the filled SBR were imaged using scanning electron microscopy (SEM) after 105 cycles of compressive fatigue. The filled SBR shows greater compressive fatigue resistance than the unfilled SBR. The incorporation of carbon black into SBR improves the creep resistance. The best compressive fatigue resistance for the filled SBR was achieved by the addition of 30 phr carbon black. With the increase of carbon black content, the energy dissipation and the heat build-up increase simultaneously. Furthermore, SEM images of the vulcanizates suggest that the crack propagation mechanism of the unfilled and the filled SBR was different. For the unfilled SBR, due to periodical compressive stress, the polymer chains can be destroyed, and the cracks can be easily initiated and propagated, showing serious damage on the top surfaces of the specimen. However, for the filled SBR, the carbon black agglomeration around the cracks can greatly delay the generation of the cracks, decrease the fatigue damage, and ultimately improve the fatigue resistance. |
format | Online Article Text |
id | pubmed-8125102 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81251022021-05-17 Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates Yang, Liu Wang, Lin Guo, Huaiqing Du, Aihua Polymers (Basel) Article The influence of carbon black on physical mechanical properties, compressive fatigue life, and the temperature changes during compression fatigue process of styrene-butadiene rubber (SBR) vulcanizates were explored. A series of unfilled and filled SBR compounds were prepared, and the compressive fatigue behaviors of the vulcanizates were performed on a mechanical testing and simulation (MTS) machine. The top surfaces of the filled SBR were imaged using scanning electron microscopy (SEM) after 105 cycles of compressive fatigue. The filled SBR shows greater compressive fatigue resistance than the unfilled SBR. The incorporation of carbon black into SBR improves the creep resistance. The best compressive fatigue resistance for the filled SBR was achieved by the addition of 30 phr carbon black. With the increase of carbon black content, the energy dissipation and the heat build-up increase simultaneously. Furthermore, SEM images of the vulcanizates suggest that the crack propagation mechanism of the unfilled and the filled SBR was different. For the unfilled SBR, due to periodical compressive stress, the polymer chains can be destroyed, and the cracks can be easily initiated and propagated, showing serious damage on the top surfaces of the specimen. However, for the filled SBR, the carbon black agglomeration around the cracks can greatly delay the generation of the cracks, decrease the fatigue damage, and ultimately improve the fatigue resistance. MDPI 2021-05-06 /pmc/articles/PMC8125102/ /pubmed/34066634 http://dx.doi.org/10.3390/polym13091497 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Liu Wang, Lin Guo, Huaiqing Du, Aihua Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title | Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title_full | Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title_fullStr | Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title_full_unstemmed | Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title_short | Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates |
title_sort | compressive fatigue behavior of gum and filled sbr vulcanizates |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125102/ https://www.ncbi.nlm.nih.gov/pubmed/34066634 http://dx.doi.org/10.3390/polym13091497 |
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