Tire bead filler composition for improving bond system and its preparation method and application

The invention relates to the tire manufacture field, especially to a tire apex composition for improving a bond system and its preparation method and application. The tire apex composition for improving the bond system is formed by the mixing of the following ingredients of: by weight, 70-100 parts of natural rubber, 0-30 parts of styrene-butadiene rubber, 55-75 parts of carbon black, 1.0-4.0 parts of resorcinol, 0.2-3.0 parts of cobalt decanoate, 3-8 parts of a methylene donator adhesive, 0-20 parts of white carbon black, 3-8 parts of a vulcanizing agent and a sulfuration promoter and other processing auxiliary agents. The tire apex composition for improving a bond system obviously raises modulus and binding property, decreases heat generation, minimizes modulus loss at high temperature, and simultaneously reduces formula cost. By employing BTR tires under the precondition of unchanged structure, the hard apex strength and hardness can be guaranteed not to be decreased, the modulus is substantially increased, the bond performance between the apex and steel wires/steel wire cords is remarkably improved, and the anti-destroy performance of tire bead positions is raised.