Microstructure of uniaxially fatigued thermally aged vulcanised natural rubber filled with cerium oxide

Duan, Wuwei; Wang, Yanping; Ji, Chongrui; Zhang, Zhe; Chen, Xu; Li, Jianjun; Zheng, Panpan; Qiao, Yu

doi:10.1007/s42464-020-00060-w

Cited by 4 publications

(4 citation statements)

References 30 publications

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“…Therefore, it can be seen that on some occasion, complete fracture is taken as the end-of-life. [19] Thus, Figure 4A also reinforces that the tendency to generate the flaw site or nucleation is also found to be lower for ENR-containing composites compared to NR-lignin.…”

Section: F I G U R E 2 (A) Rheological Curve Of Composites; (B) Inter...supporting

confidence: 67%

“…This phenomenon clearly enunciates the fact that self‐association of epoxy groups and rubber–rubber links generated from unreacted SCA have contributed to this increased modulus. [ 18,19 ]…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon clearly enunciates the fact that self-association of epoxy groups and rubber-rubber links generated from unreacted SCA have contributed to this increased modulus. [18,19] 3.2 | Tearing energy (TE) and fatigue crack growth (FCG) behavior: an insight to the relationship of crack behavior with intrinsic material properties FCG behavior of lignin-filled NR and ENR compounds has been characterized through Tear and Fatigue Analyzer (TFA, Coesfeld). Pure shear (PS) specimen has been used to calculate the tearing energy and crack growth rate.…”

Section: Characterization Of Materialsmentioning

confidence: 99%

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Tear fatigue behavior of lignin‐based sustainable rubber composites

Chowdhury

Ghosh

Chanda

et al. 2022

Polymer Engineering & Sci

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Rubber products, especially tire, experiences millions of fatigue cycles during their service life. In this period, penetration or cuts owing to any sharp objects brings calamitous failure. Thus, the fatigue crack growth (FCG) characteristic of tire components has become an important parameter to inspect. In the present study, the FCG behavior of sustainable filler, lignin‐filled composite is investigated. The impact of rubber matrix (epoxidation of natural rubber) on crack growth behavior is scrutinized in this article. Epoxy group introduction in natural rubber leads to a significant change in tearing energy throughout the strain range (10%–25%). Higher mol% of the epoxy group brings in a lower crack growth rate. An increase in polar interaction amongst the matrix through epoxide—hydroxyl functionality contributes significantly to the FCG rate. Inter‐molecular interaction promotes higher cross‐link density in epoxidized natural rubber containing composites which are reflected in static as well as dynamic‐mechanical properties. Morphological evidence (Field‐emission scanning electron microscope [FE‐SEM] and microscopic images) establishes the fact that stiffening at the crack tip, arising from intrinsic strain‐induced crystallization and high‐density network formation in the concerned matrix are the major contributors to the reduction in fatigue crack growth rate of a composite.

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Section: F I G U R E 2 (A) Rheological Curve Of Composites; (B) Inter...supporting

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Tear fatigue behavior of lignin‐based sustainable rubber composites

Chowdhury

Ghosh

Chanda

et al. 2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…Scanning electron microscopy showed that there were uniformly distributed tiny ligaments and dimples at the crack tip, which could weaken the crack propagation. Duan et al [ 82 , 83 ] carried out uniaxial fatigue tests on vulcanized natural rubber filled with and without cerium oxide. By analyzing the microstructure of the fracture of the sample with a scanning electron microscope, it was found that cerium oxide had good dispersibility, which improved the internal network structure of the rubber, enhanced the interaction of rubber molecular chains and improved the anti-fatigue performance of the rubber.…”

Section: Factors Affecting the Fatigue Life Of Rubbermentioning

confidence: 99%

Research Progress on Fatigue Life of Rubber Materials

2022

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Rubber products will be fatigued when subjected to alternating loads, and working in harsh environments will worsen the fatigue performance, which will directly affect the service life of such products. Environmental factors have a great influence on rubber materials, including temperature, humidity, ozone, etc., all of which will affect rubber’s properties and among which temperature is the most important. Different rubber materials have different sensitivity to the environment, and at the same time, their own structures are different, and their bonding degree with fillers is also different, so their fatigue lives are also different. Therefore, there are generally two methods to study the fatigue life of rubber materials, namely the crack initiation method and the crack propagation method. In this paper, the research status of rubber fatigue is summarized from three aspects: research methods of rubber fatigue, factors affecting fatigue life and crack section. The effects of mechanical conditions, rubber composition and environmental factors on rubber fatigue are expounded in detail. The section of rubber fatigue cracking is expounded from macroscopic and microscopic perspectives, and a future development direction is given in order to provide reference for the research and analysis of rubber fatigue and rubber service life maximization.

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Uniaxial fatigue behavior of thermal-aged cerium oxide-modified vulcanized natural rubber

Qiao

Wang

et al. 2021

J Rubber Res

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Microstructure of uniaxially fatigued thermally aged vulcanised natural rubber filled with cerium oxide

Cited by 4 publications

References 30 publications

Tear fatigue behavior of lignin‐based sustainable rubber composites

Tear fatigue behavior of lignin‐based sustainable rubber composites

Research Progress on Fatigue Life of Rubber Materials

Uniaxial fatigue behavior of thermal-aged cerium oxide-modified vulcanized natural rubber

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