초록 ▼

A rubber composition having a high hysteresis loss is provided without impairment of other physical properties, such as fracture characteristics. The rubber composition includes 100 parts by weight of a rubber component, 0.1 to 100 parts by weight of graphitized carbon material, and a lipid the amou

A rubber composition having a high hysteresis loss is provided without impairment of other physical properties, such as fracture characteristics. The rubber composition includes 100 parts by weight of a rubber component, 0.1 to 100 parts by weight of graphitized carbon material, and a lipid the amount of which is 0.02 to 0.2 times the amount of the graphitized carbon material. Preferably, the graphitized carbon material is carbon fiber grown from a vapor phase or graphitized carbon black, and the lipid is a fatty acid. Preferably, the rubber composition according to the present invention has a loss tangent tan δ in the range of 0.05 to 0.5 at a temperature of 60 degree C. after vulcanization.

대표청구항 ▼

What is claimed is: 1. A rubber composition comprising: 0.1 to 100 parts by weight of graphitized carbon material per 100 parts by weight of a rubber component; and a lipid the amount of which is 0.02 to 0.2 times the amount of the graphitized carbon material, wherein the graphitized carbon materia

What is claimed is: 1. A rubber composition comprising: 0.1 to 100 parts by weight of graphitized carbon material per 100 parts by weight of a rubber component; and a lipid the amount of which is 0.02 to 0.2 times the amount of the graphitized carbon material, wherein the graphitized carbon material is carbon fiber grown from a vapor phase or graphitized carbon black. 2. The rubber composition according to claim 1, wherein the lipid is a fatty acid. 3. The rubber composition according to claim 1, wherein the rubber composition has a loss tangent tan δ in the range of 0.05 to 0.5 at a temperature of 60 degree C. after vulcanization. 4. The rubber composition according to claim 1, further comprising ungraphitized carbon black the amount of which is 0.1 to 50 times the amount of the graphitized carbon material. 5. A tire wherein the rubber composition according to claim 1 is used as a tread material. 6. A rubber composition comprising: 0.1 to 100 parts by weight of graphitized carbon material per 100 parts by weight of a rubber component; and a lipid the amount of which is 0.02 to 0.2 times the amount of the graphitized carbon material, wherein the graphitized carbon material is carbon fiber grown from a vapor phase.