Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

Yang, Liu; Wang, Lin; Guo, Huaiqing; Du, Ai

doi:10.3390/polym13091497

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…A stage of relatively stable and slow fatigue‐crack propagation was observed, in which SBR/ CB/HF‐V‐E had a considerably longer steady propagation phase. Long fibers played a function in inhibiting crack propagation and effectively improved the fatigue life span of the compounds 59 . Long HFs interlace in the rubber matrix to compensate the lack of enhancement effect of the short HF and increase the fatigue life by nine times.…”

Section: Resultsmentioning

confidence: 99%

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Fatigue‐crack‐propagation behavior and mechanism of long hemp‐fiber‐enhanced styrene–butadiene rubber/carbon black compounds

Liang,

Zhang,

Luo

et al. 2023

Polymer Composites

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Biomass renewable fiber has the advantages of low cost and environmental friendliness; however, its application as a reinforcement material is limited owing to its poor reinforcement effect. Thus, expanding its application is still a major challenge. This study investigates the effect of hemp fiber (HF) of different lengths on the mechanical properties and fatigue behavior of styrene‐butadiene rubber/carbon black (SBR/CB) compounds using high‐pressure low‐shear extrusion. The results showed that the length of the HF retained by the extrusion process was approximately 10 times that of the traditional internal mixing process (internal mixing and open mixing). Interface bonding between the long HF coated with butadiene‐vinyl pyridine latex (VPL) and the SBR/CB matrix was improved significantly. This inhibited the fatigue‐crack propagation and considerably improved the dynamic fatigue life of the notched specimens. The dynamic fatigue life of the notched specimens of the composite prepared by the extrusion process was approximately nine times longer than that of the traditional internal mixing process. The results showed that the long HF length retained after the extrusion process effectively enhanced the strength of the rubber composites and significantly improved the dynamic fatigue life of rubber products under alternating stress.Highlights The raw material, hemp fiber, is a renewable resource, low cost and environmentally friendly. Pioneering a new process for preparing rubber composite materials, replacing the traditional process for preparing composite materials. High‐pressure, low‐shear extrusion process retains the length of the hemp fibers and improves rubber composites properties. Compared to traditional processes，long fiber length is 10 times longer by the extrusion process and fatigue life is increased to 9 times. High‐pressure, low‐shear extrusion process enables mass production, opening up new ideas for rubber industrial production.

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Section: Resultsmentioning

confidence: 99%

“…Long fibers played a function in inhibiting crack propagation and effectively improved the fatigue life span of the compounds. 59 Long HFs interlace in the rubber matrix to compensate the lack of enhancement effect of the short HF and increase the fatigue life by nine times.…”

Section: Analysis Of Uniaxial Tensile Fatigue Life Of Gaped Samplesmentioning

confidence: 99%

Fatigue‐crack‐propagation behavior and mechanism of long hemp‐fiber‐enhanced styrene–butadiene rubber/carbon black compounds

Liang,

Zhang,

Luo

et al. 2023

Polymer Composites

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“…In some other studies, scholars determined that as the crosslink density increased with the addition of filler, the tensile strength, tear strength, and hardness values increased between 58% and 500%, 38% and 360, and 4.47% and 22%, respectively [15][16][17][18][19]. In addition, it was stated that excessive crosslink formation reduced the elongation % due to the more brittle structure of the compounds [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of mica powder-filled styrene-butadiene rubber compounds on crosslink density and mechanical properties

Bülbül

Ergün

2022

THERM SCI

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In this study, four different compounds were produced by adding different proportions of mica powder (0-5-10-20%) to styrene-butadiene rubber. After vulcanization, the crosslink density, hardness, density, tensile strength, elongation percentage, and tearing strength of the compounds were measured. In addition, the effects of crosslink density on mechanical properties were discussed. The physio-mechanical properties of the new compounds produced were compared both among them?selves and with the properties of the rubber being referenced. It was observed that increasing the crosslink density of mica powder provided an advantage in terms of hardness, tensile strength, tearing strength, and percentage elongation properties. To explain the changes in mechanical properties, the tensile fracture surfaces were determined by SEM and energy dispersive spectroscopy. In the light of the obtained results, it was determined that the use of carbon black could be reduced by using mica powder in the rubber industry.

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Heat exchange and damage of carbon black‐filled styrene‐butadiene rubber under uniaxial cyclic loading

Candau,

Fernandes,

Vives

et al. 2024

J of Applied Polymer Sci

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In this paper, we present an original experimental approach combining infrared thermography, analysis of voiding, and swelling tests to investigate damage mechanisms in carbon black (CB)‐filled styrene‐butadiene rubber (SBR). Heat exchange and voiding under uniaxial cyclic loading have been observed. A mechanical and electrical percolating filler network was identified by atomic force microscopy and electrical conductivity for the SBR with highest content of fillers (60 phr). SBR materials with a non percolating filler network show a reversible thermal energy dissipation during a series of cyclic loading, concomitant with reversible voiding mechanisms, through the successive formation and closing of voids. The SBR with the percolating network undergoes, during the series of cyclic loading, a high dissipation of energy under the form of heat, concomitantly with irreversible voiding mechanisms. Such mechanisms are shown to be due primarily to (i) the alteration of the filler network and/or filler/rubber interface and to a lower extent to (ii) the rubber matrix alteration (chains scission and/or crosslink breakage) as demonstrated by ex‐situ swelling.

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Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

Cited by 6 publications

References 22 publications

Fatigue‐crack‐propagation behavior and mechanism of long hemp‐fiber‐enhanced styrene–butadiene rubber/carbon black compounds

Fatigue‐crack‐propagation behavior and mechanism of long hemp‐fiber‐enhanced styrene–butadiene rubber/carbon black compounds

Effect of mica powder-filled styrene-butadiene rubber compounds on crosslink density and mechanical properties

Heat exchange and damage of carbon black‐filled styrene‐butadiene rubber under uniaxial cyclic loading

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