Effect of vulcanization time on crosslink density and aging performance of natural rubber composites

Basit Öğe Kaydı
dc.authorid0000-0001-5807-633Xen_US
dc.contributor.authorDayioglu, Ahu Kor
dc.contributor.authorBalaban, Seda
dc.contributor.authorÜnür Yılmaz, Ece
dc.date.accessioned2021-03-20T20:09:22Z
dc.date.available2021-03-20T20:09:22Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Kimya Bölümüen_US
dc.description.abstractNatural rubber composites are widely used in the automotive industry because of their improved viscoelastic characteristics that are mostly governed by crosslink density. However, rubber parts suffer deterioration of performance over long service lives. Therefore, optimization of crosslink density and prediction of changes in physico-mechanical properties over time at elevated temperatures is extremely important for the production of safe auto parts. In this work, the effect of vulcanization time on crosslink density and thus the performance and lifetime of natural rubberbased auto parts was investigated. The natural rubber mixture prepared in this context was vulcanized for 3, 5, 10 and 15 minutes at a constant temperature of 160 degrees C. The crosslink density of each vulcanizite was determined by equilibrium swelling tests and the Flory-Rehner equation. The maximum crosslink density (10.75 x 10(-5) mol x cm (-3)) and the minimum permanent compression set values (10% at 70 degrees C and 25% at 100 degrees C) were recorded for the sample vulcanized for 10 minutes (V-10). Aging behavior of the samples were investigated by stress relaxation tests performed at 85 degrees C, 100 degrees C and 120 degrees C. The service lives of the vulcanizites at different temperatures were predicted by linear Arrhenius fits of degradation times. The sample vulcanized for 10 minutes (V-10) was shown to exhibit a service life of 2282 hours at 70 degrees C in air and the optimum physico-mechanical performance under real operating conditions. The performance and lifetime prediction procedure used in this work could be employed in an early design of rubber components for specific applications.en_US
dc.identifier.doi10.3139/120.111546en_US
dc.identifier.endpage862en_US
dc.identifier.issn0025-5300
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage858en_US
dc.identifier.urihttp://doi.org/10.3139/120.111546
dc.identifier.urihttps://hdl.handle.net/20.500.12885/385
dc.identifier.volume62en_US
dc.identifier.wosWOS:000568263400013en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.institutionauthorÜnür Yılmaz, Ece
dc.language.isoenen_US
dc.publisherCarl Hanser Verlagen_US
dc.relation.ispartofMaterials Testingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNatural rubberen_US
dc.subjectvulcanization timeen_US
dc.subjectcrosslink densityen_US
dc.subjectservice lifeen_US
dc.subjectArrhenius modelen_US
dc.titleEffect of vulcanization time on crosslink density and aging performance of natural rubber compositesen_US
dc.typeArticleen_US

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