Manufacturing Industry
Volcanic sand combines with rubber to make tires flexible.(Polymers/Ceramics)
Advanced Materials & Processes, April, 2004
Volcanic sand is combined with an advanced rubber compound to create a rough surface on the tread face of the new Assurance tire from Goodyear Tire & Rubber Co., Akron, Ohio. As the tire rolls on the road, the volcanic sand "grit" creates microscopic cavities that work as tiny traction edges for better grip on slick surfaces.
The material also allows the tire to maintain flexibility in cold weather. The volcanic sand is complemented by tiny glass fibers designed to create a pitted surface in the tread. "The volcanic sand is added to the tire as a ground pumice material," says Goodyear's Michael Crawford. "The pumice creates a constantly rough and textured surface that proves very effective in delivering the kind of grip that drivers demand." For more...
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