Heat, flex fatigue and ozone resistant conveyor belt cover

Rubber blends of SBR and EPDM having improved dynamic ozone resistance, heat resistance, and flex fatigue resistance can be made by co-curing such rubber blends with a sulfur donor/accelerator and a peroxide curing agent. In some aspects, these blends are void of free sulfur. These cured rubber form...

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Bibliographic Details
Main Authors Burrowes, Thomas George, Rong, Guangzhuo
Format Patent
LanguageEnglish
Published 23.04.2019
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PACKING
PERFORMING OPERATIONS
PNEUMATIC TUBE CONVEYORS
SHOP CONVEYOR SYSTEMS
STORING
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING
TRANSPORTING
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Summary:Rubber blends of SBR and EPDM having improved dynamic ozone resistance, heat resistance, and flex fatigue resistance can be made by co-curing such rubber blends with a sulfur donor/accelerator and a peroxide curing agent. In some aspects, these blends are void of free sulfur. These cured rubber formulations can advantageously be used in a wide variety of industrial rubber products, such as in conveyor belts. The disclosure also reveals conveyor belts which have a combination of good dynamic ozone resistance, heat resistance, and flex fatigue resistance. The conveyor belt include a carry cover layer, a pulley cover layer, and a reinforcement layer which is situated between the carry cover layer and the pulley cover layer, and the carry cover layer and/or the pulley cover layer contain cured rubber formulations according to the disclosure.
Bibliography:Application Number: US201615746000