| 摘要 |
PURPOSE: A tire rubber composition for a truck is provided, to improve the heat-resistant aging for extending the lifetime and to prevent the deterioration of physical properties due to the long-time curing at a high temperature. CONSTITUTION: The tire rubber composition comprises 100 parts by weight of rubber; 0.5-2.0 parts by weight of sulfur; 1.0-3.0 parts by weight of a sulfenamide-based curing accelerator; and 1.0-3.0 parts by weight of 1,6-bis(N,N'-dibenzylthiocarbamoyldithio)-hexane. Preferably the sulfenamide-based curing accelerator is selected from the group consisting of N-cyclohexylbenzothiazole, N-tert-butyl-2-benzothiazolyl sulfenamide and 2-(morpholinothio)benzothiazole. The rubber is a natural rubber, or a mixture of a natural rubber and 0-30 wt% of a diene-based rubber. |
