The Effect of Network Structure on Compressive Fatigue Behavior of Unfilled Styrene‐Butadiene Rubber

Yang, Liu; Liu, Kaikai; Du, Ai

doi:10.1155/2020/6729754

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…The nature of crosslinks formed during vulcanization is known to influence fatigue properties as well [25]. The sulfur vulcanization system used in NBR may aid [26,27]. The ability of the polysulfide crosslinks to cleave quickly and reform enables enhanced energy dissipation, thus offering a better fatigue life in rubber vulcanizates [28].…”

Section: Resultsmentioning

confidence: 99%

Introduction to the New Copolymer of Chloroprene and Acrylonitrile with Differentiated Properties

Sarkar

Nishino

Ishigaki

et al. 2021

Advances in Polymer Technology

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The random copolymer of chloroprene and acrylonitrile is a newly developed rubber whose features and value propositions are not scientifically explored yet. This article focuses on the basic characterizations and properties of acrylonitrile-chloroprene rubber. Qualitative analyses through infrared (FTIR) and nuclear magnetic resonance (1H-NMR) spectra confirm the presence of both the -Cl and -CN groups in the new rubber. As evidenced through differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA), the single glass transition temperature of acrylonitrile-chloroprene rubber reflects its monophasic random microstructure. While compared against commercial grades of chloroprene rubber (CR) and nitrile rubber (NBR), the new rubber provides a distinctive combination of properties that are not available with either of the elastomer alone. Acrylonitrile-chloroprene rubber demonstrates slightly lower specific gravity, an improved low-temperature compression set, higher flex-fatigue resistance, and lower volume swelling in IRM 903 and Fuel C to chloroprene rubber. As compared to nitrile rubber, the new copolymer shows appreciably better heat aging and ozone resistance. Good abrasion resistance, low heat buildup, and remarkably high flex-fatigue resistance indicate excellent durability of the acrylonitrile-chloroprene rubber under dynamic loading. Based on the preliminary results, it is apparent that the new copolymer can be a candidate elastomer for various industrial applications which demand good fluid resistance, high heat and low-temperature tolerances, good weatherability, and durability under static and dynamic conditions.

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Section: Resultsmentioning

confidence: 99%

Introduction to the New Copolymer of Chloroprene and Acrylonitrile with Differentiated Properties

Sarkar

Nishino

Ishigaki

et al. 2021

Advances in Polymer Technology

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“…As shown in Figure 4 a,d, the top surface of both samples before the compression fatigue tests were smooth and flat. According to our previous work [ 23 ], for unfilled SBR, there are many cavities and serious damage on the surface. However, for the filled SBR, no obvious cavities were present on the surface, whereas different damages and cracks appeared on the top surface, as shown in Figure 4 b,c.…”

Section: Resultsmentioning

confidence: 99%

Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

et al. 2021

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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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Complex Modification of Bituminous Binders by Linear Styrene-Butadiene-Styrene Copolymer and Sulfur

Буланов

Вдовин²,

Stroganov³

et al. 2022

Lecture Notes in Civil Engineering

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The Effect of Network Structure on Compressive Fatigue Behavior of Unfilled Styrene‐Butadiene Rubber

Cited by 4 publications

References 25 publications

Introduction to the New Copolymer of Chloroprene and Acrylonitrile with Differentiated Properties

Introduction to the New Copolymer of Chloroprene and Acrylonitrile with Differentiated Properties

Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

Complex Modification of Bituminous Binders by Linear Styrene-Butadiene-Styrene Copolymer and Sulfur

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