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Ground Tire Rubber Particles as Substitute for Calcium Carbonate in an EPDM Sealing Compound

  • Ground tire rubber (GTR) is a product obtained by grinding worn tire treads before retreading them or via the cryogenic or ambient temperature milling of end-of-life tires (ELTs). The aim of this study is to evaluate if calcium carbonate can be substituted by GTR and, if so, to what extent. Different types of ground tire rubber are incorporated in an EPDM (ethylene–propylene–diene–rubber) model compound as partial or complete substitutes of calcium carbonate. The raw compounds and the vulcanizates are characterized to identify the limits. In general, it is apparent that increasing amounts of GTR and larger particles degrade the mechanical properties. The GTR also influences the vulcanization kinetics by reducing the scorch time up to 50% and vulcanization time up to nearly 80%. This is significant for production processes. The compounds with one-third substitution with the smaller-particle-size GTR show mostly similar or even better properties than the reference.

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Author:Vanessa Spanheimer, Jaber Gamze Gül, Katrakova-Krüger Danka
Parent Title (English):Polymers
Document Type:Article
Date of first Publication:2023/06/14
Date of Publication (online):2023/06/14
GND-Keyword:EPDM; Recycling
Tag:EPDM; End-of-Life-Tires; Ground Tire Rubber; Recycling
Article Number:2174
Institutes:Informatik und Ingenieurwissenschaften (F10) / Fakultät 10 / Institut Allgemeiner Maschinenbau
Dewey Decimal Classification:000 Allgemeines, Informatik, Informationswissenschaft
Open Access:Open Access
OA-Publicationfonds TH Köln:OA-Publicationfonds TH Köln
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International