Chemically modified sepiolite was used as filler in silica based elastomeric composites. The sepiolite was modified through the reaction with silica (nano) particles from silanes such as TEOS and TESPD. Characterization of silica (nano) particles and sepiolite was performed by means of dynamic light scattering, thermogravimetric, elemental analysis, infrared spectroscopy and field emission scanning electron microscopy. Prepared sulphur crosslinked rubber composites were characterized for vulcanization behavior and dynamic mechanical properties. Recently, it has been announced the commercial development of rubber compounds with sepiolite, whose chemical modification allowed the compatibilization, lower rolling resistance and better wet grip.

Sepiolite as reinforcing Filler for Rubber Composites: From the chemical Compatibilization to the commercial Exploitation

D. Locatelli;N. Pavlovic;V. Barbera;M. Galimberti
2020-01-01

Abstract

Chemically modified sepiolite was used as filler in silica based elastomeric composites. The sepiolite was modified through the reaction with silica (nano) particles from silanes such as TEOS and TESPD. Characterization of silica (nano) particles and sepiolite was performed by means of dynamic light scattering, thermogravimetric, elemental analysis, infrared spectroscopy and field emission scanning electron microscopy. Prepared sulphur crosslinked rubber composites were characterized for vulcanization behavior and dynamic mechanical properties. Recently, it has been announced the commercial development of rubber compounds with sepiolite, whose chemical modification allowed the compatibilization, lower rolling resistance and better wet grip.
Chemisch modifiziertes Sepiolith wurde als Füllstoff in Kieselsäure-basierenden Elastomerkompositen eingesetzt. Das Sepiolith wurde durch die Reaktion mit Kieselsäure-Nanopartikeln aus Silanen wie TEOS und TESPD modifziert. Die Charakterisierung der Kieselsäurenanopartkiel und des Sepiolith erfolgten durch dynamische Lichtstreuung, Thermogravimetrie, Elementanalyse, Infrarotspektroskopie und Feldemissionsrasterelektronenmikroskopie. Hergestellte mit Schwefel vernetzte Kautschukkomposite wurden hinischtlich des Vulkanisationsverhaltens und der dynamisch-mechanischen Eigenschaften charakterisiert. Als neu ist die kommerzielle Entwicklung von Kautschukmischungen anzukündigen, deren chemische Modifzierung die Kompatibilisierung, niedrigen Rollwiderstand und verbesserten Naßgriff erlaubt.
Elastomeric composites · sepiolite · chemical modification · silanes · TEOS · natural Rubber
Elastomerkomposite · Sepiolith · chemische Modifizierung · Silane, TEOS · Nautrkautschuk
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1166514
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