"Application of carbon black modified cis-1,4-polybutadiene rubber

Abstract

The effects of common cis-1,4-polybutadiene rubber （BR）, BR prepared from neodymium catalyst system and carbon black modified BR on sidewall compound properties were investigated by adding different BR to sidewall compound of passenger car radial tire. The results showed that the carbon black modified BR had higher Mooney viscosity, shorter scorch time, longer curing time, and higher minimum and maximum torque. The modulus, tensile strength and rebound resilience of the vulcanizate increased, while loss factor at 60 ℃ decreased. The rolling resistance of the finished tire was reduced.

Keywords

• cis-1
• 4-polybutadiene rubber
• carbon black modification
• sidewall compound
• physical and mechanical property
• loss factor
• rolling resistance