Silanes from Evonik in mechanical rubber goods

Alongside silicas, Evonik also offers a broad range of sulfur, amino, vinyl and other specialty silanes under the COUPSIL® and Dynasylan® brand names, which are specially tailored to customers&#; application areas and requirements. Among other things, the choice of silane (and the matching silicas) depends on the type of rubber and the desired crosslinking system, i.e., sulfur or peroxide crosslinking. The emissions generated during vulcanization must also be taken into consideration. VOC-free silanes offer unique benefits in this case. Moreover, Evonik also offers pre-reacted products from the COUPSIL® portfolio&#;&#; these are silicas that have already been reacted with silanes. 

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Ethylene propylene diene monomer rubber (EP(D)M) is the most commonly used rubber that is crosslinked using peroxides. Because it is highly temperature-resistant and withstands many chemicals as well as UV radiation and ozone, it is primarily used for outdoor applications. EPM is used in mechanical rubber goods requiring a high level of thermal stability, such as seals, O-rings or profiles. Here, even small silane quantities have a major impact on reinforcement properties, while compressive deformation is also significantly improved. 

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To identify the ideal solution for their customers, Evonik&#;s silane experts offer worldwide technical support when testing and selecting silica/silane combinations and work with their customers to develop the optimum solution. 

If you want to learn more, please visit our website silica silane.