| 摘要 |
PURPOSE: Provided is a tread rubber composition for a snow tire, which contains silica and can maximize driving force and brake force in a snow road and a wet road by adding a foaming agent. CONSTITUTION: The tread rubber composition contains a raw rubber comprising a natural rubber and a synthetic rubber in the ratio of 3:7-5:5, the silica, as a filler, substituted wholly or partially for a carbon black, and 2.0-5.0pts.wt. of the foaming agent, wherein the foaming agent is a sulfonyl compound having a decomposition temperature of 143-147deg.C, a gas generating amount of 100-110ml/gr, and an average particle size of 3.0-4.0 micrometer. |
