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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...

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Autores principales: Yang, Liu, Wang, Lin, Guo, Huaiqing, Du, Aihua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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.
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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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