Evaluation of Fatigue Crack Growh Resistance of Rubber-Silica Composites and Analysis of the Role of Filler-Filler Interaction and Interface Bonding

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ALIMARDANI MOHAMMAD; RAZZAGHI KASHANI MEHDI

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Journal: Iranian Journal of Polymer Science and Technology Year:2020 | Volume:32 | Issue:5 Page(s): 397-409

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Information Journal Paper

Title

Evaluation of Fatigue Crack Growh Resistance of Rubber-Silica Composites and Analysis of the Role of Filler-Filler Interaction and Interface Bonding

Author(s)

ALIMARDANI MOHAMMAD | RAZZAGHI KASHANI MEHDI | Issue Writer Certificate

Keywords

fatigue crack growthQ1

interface bondingQ1

filler-filler interactionQ1

rubberQ2

silicaQ1

Abstract

Hypothesis: fatigue crack growth (FCG) of rubber composites as controlled by the viscoelastic losses, is strongly dependent on the polymer-filler interfacial phenomena. The type of filler-polymer bonding at the interface and the extent of mobility restriction of rubber chains resulting from the interaction by the filler are of the critical ones. In highly filled rubber compound, the amount of mobility restriction is almost dictated by the filler-filler interaction. Regulating the surface energy of the filler can be an effective method to control the filler-filler interaction, to distinguish the two interfacial phenomena, and to pave the way of studying their significance. Methods: Ultrasil VN3 and solution styrene-butadiene rubber (SSBR) were of the base composite materials. Using two silanes with a short and a long aliphatic chain length, the surface of Ultrasil was modified in our lab to a certain level of grafting density which could bring the required surface energy and the filler-filler interaction. By controlling the surface energy of silica treated in the lab, and by making a systematic comparison of the resulting composites, it was possible to study the role of covalent bonding at the interface, the role of filler-filler interaction and severity of mobility restriction and finally the role of silane chain length. Findings: fatigue crack growth experiment revealed that the severity of mobility restriction and the filler-filler interaction of the composite have the highest impact on the amount of viscoelastic dissipation and the rate of crack growth. The covalent bonding at the interface can deviate the crack from growing in the original direction and thus it may act as a physical barrier to improve crack growth resistance. For highly filled compounds where the properties are almost dictated by the filler-filler interaction, the role played by the chain length of silane is minor.

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APA: Copy

ALIMARDANI, MOHAMMAD, & RAZZAGHI KASHANI, MEHDI. (2020). Evaluation of Fatigue Crack Growh Resistance of Rubber-Silica Composites and Analysis of the Role of Filler-Filler Interaction and Interface Bonding. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 32(5 ), 397-409. SID. https://sid.ir/paper/6690/en

Vancouver: Copy

ALIMARDANI MOHAMMAD, RAZZAGHI KASHANI MEHDI. Evaluation of Fatigue Crack Growh Resistance of Rubber-Silica Composites and Analysis of the Role of Filler-Filler Interaction and Interface Bonding. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2020;32(5 ):397-409. Available from: https://sid.ir/paper/6690/en

IEEE: Copy

MOHAMMAD ALIMARDANI, and MEHDI RAZZAGHI KASHANI, “Evaluation of Fatigue Crack Growh Resistance of Rubber-Silica Composites and Analysis of the Role of Filler-Filler Interaction and Interface Bonding,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 32, no. 5 , pp. 397–409, 2020, [Online]. Available: https://sid.ir/paper/6690/en

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