Low density rubber composition comprising multi-walled carbon nanotubes and use thereof for tracks or tires

Abstract

A rubber composition based on: 65-80 wt % of an elastomeric material comprising a mixture of a polyisoprene, butadiene rubber, and polyolefin elastomer; 1-7 wt % MWCNT; 3-25 wt % carbon black; and 0-2 wt % fibers; wherein the wt % are based on the total weight the composition; the MWCNT having an average length ranging from 2-40 μm. Also disclosed is a rubber composition based on: 25-35 wt % of polyisoprene; 17-27 wt % of butadiene rubber; 3-9 wt % of polyolefin elastomer; 10-15 wt % of high styrene resin; 1-7 wt % of MWCNT; 3-25 wt % carbon black; and 0-2 wt % fibers. The composition is useful for manufacturing tracks or tires for vehicles, such as snowmobiles, snow bikes, All-Terrain Vehicles or Utility Terrain Vehicles. A track or tire for a vehicle comprising the rubber composition in vulcanized form is also disclosed.

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