Rubber composition for conveyor belt, and conveyor belt

摘要

The present technology provides a rubber composition for a conveyor belt. The rubber composition comprises: a rubber component containing butadiene rubber and/or styrene butadiene rubber, carbon black, sulfur, and a vulcanization accelerator; the glass transition temperature of the butadiene rubber and the styrene butadiene rubber being −65° C. or lower; the nitrogen adsorption specific surface area of the carbon black being 90 m2/g or less; the total content of the butadiene rubber and the styrene butadiene rubber being 50% by mass or greater relative to the content of the rubber component; the content of the carbon black being from 30 to 50 parts by mass per 100 parts by mass of the rubber component; and the mass ratio (sulfur/vulcanization accelerator) of the content of the sulfur to the content of the vulcanization accelerator being 1.5 or less.

主权项

1. A rubber composition for a conveyor belt comprising:
a rubber component containing butadiene rubber and/or styrene butadiene rubber, carbon black, sulfur, and a vulcanization accelerator; a glass transition temperature of the butadiene rubber and the styrene butadiene rubber being −65° C. or lower; a nitrogen adsorption specific surface area of the carbon black being 90 m2/g or less; a total content of the butadiene rubber and the styrene butadiene rubber being 50% by mass or greater relative to a content of the rubber component; a content of the carbon black being from 30 to 50 parts by mass per 100 parts by mass of the rubber component; and a mass ratio (sulfur/vulcanization accelerator) of a content of the sulfur to a content of the vulcanization accelerator being 1.5 or less.