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Evolution of the Viscoelastic Properties of Filler Reinforced Rubber under Physical Aging at Room Temperature
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Marcus Wallenberg Laboratory MWL. Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England..
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0001-5760-3919
Birla Carbon, 1800 West Oak Commons Court, Marietta, GA 30062 USA..
Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England..ORCID iD: 0000-0002-8304-7140
2023 (English)In: Polymers, E-ISSN 2073-4360, Vol. 15, no 7, article id 1806Article in journal (Refereed) Published
Abstract [en]

Filler reinforced rubber is widely used for engineering applications; therefore, a sound characterization of the effects of physical aging is crucial for accurately predicting its viscoelastic properties within its operational temperature range. Here, the torsion pendulum is used to monitor the evolution of the storage and loss modulus of carbon black filled samples for four days after a temperature drop to 30 degrees C. The storage modulus presents a continuous increase, while the loss modulus generally displays a steady decrease throughout the four days that each test was conducted. The relationship of the recovery rates with the carbon black properties is also studied, analysing its dependency on the particle size and aggregate structure. The evolution of the recovery rate seems to depend linearly on the surface area while the carbon black structure appears to have a much weaker influence on the physical aging behavior for the set of compounds tested. The obtained results corroborate the presence of physical aging at room temperature for filler rubber materials and the ability of the torsion pendulum to monitor the storage and loss modulus change, providing pivotal data on the influence of physical aging on the viscoelastic properties of the material.

Place, publisher, year, edition, pages
MDPI AG , 2023. Vol. 15, no 7, article id 1806
Keywords [en]
physical aging, carbon black, natural rubber, reinforced rubber, torsion pendulum, viscoelastic properties, storage modulus, loss modulus, external surface area, compressed oil adsorption number
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-326887DOI: 10.3390/polym15071806ISI: 000968742800001PubMedID: 37050420Scopus ID: 2-s2.0-85152859646OAI: oai:DiVA.org:kth-326887DiVA, id: diva2:1756780
Note

QC 20230515

Available from: 2023-05-15 Created: 2023-05-15 Last updated: 2024-01-17Bibliographically approved

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Vizcaíno-Vergara, MaríaKari, Leif

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Vizcaíno-Vergara, MaríaKari, LeifBusfield, James J. C.
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