Ultrasil is a white precipitated silica that is used as a filler to strengthen natural and synthetic rubber. This product is available as granules or powder.
Due to its reinforcing properties, this compound gives good wear resistance, tear resistance and tensile strength to the rubber. The granulated form of this compound is less spreadable than its powder during mixing, so the mixing time is shorter.
Ultrasil is used to strengthen the physical properties of natural and synthetic rubbers, including SMR, NBR. This compound is used as a primary filler in combination with carbon black. In addition, in tire production, ultrasil improves rolling resistance, flex fatigue and traction.
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