Rubber composition for conveyor belt and conveyor belt

• Main Authors: HIROAKI WATANABE, JUN MIYAJI
• Format: Patent
• Language: English
• Published: 03.03.2011
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Disclosed are a rubber composition for a conveyor belt and a conveyor belt which can maintain basic physical properties such as high rupture strength and high wear resistance and can reduce the power consumption to a satisfactory level. The rubber composition comprises a rubber component comprising natural rubber (NR) and polybutadiene rubber (BR), carbon black, silica, a silane coupling agent and diethylene glycol, wherein the ratio between the amount of natural rubber and the amount of polybutadiene rubber (NR/BR) in the rubber component is 80/20 to 25/75, the content of carbon black is 15 to 35 parts by mass based on 100 parts by mass of the rubber component, the content of silica is 5 to 25 parts by mass based on 100 parts by mass or the rubber component, the content of the silane coupling agent is 0.5 to 3 parts by mass based on 100 parts by mass of the rubber component, and the content of diethylene glycol is 0.5 to 4.5 parts by mass based on 100 parts by mass of the rubber component.