The invention relates to the technical field of tires and in particular to run-
flat tire side support rubber, a preparation method and a tire structure thereof.
Neodymium series butadiene rubber usedby a
sizing material is
polybutadiene with high cis-form-1,4-structure content obtained by using a
neodymium compound as a main catalyst, so the support rubber has higher tensile property and resilience property, good
carbon black dispersing performance, and more excellent aging-resistant performance. White
carbon black adopts a 1115MP type with high dispersion and a low superficial area. The high-dispersion-type low-superficial-area white
carbon black is capable of effectively improving
tear resistance and
thermal aging resistance of a support rubber part, and effectively reducing 15% of
thermogenesis performance. Through a formula of the relayed
sizing material, the prepared support rubber has stronger physical characteristics of
tear resistance, high stretching, high strength, high
temperature resistance and the like. Through a
special design and a matching ratio in structure and formula aspects, the tires can be guaranteed to be continuously driven still in a speed of 80 km / h in azero air pressure state, and a
steering wheel cannot be easily deviated from a driving direction in a driving process, until a next maintenance point is found out.