The invention belongs to the technical field of composite materials, and relates to a flex-resistant tire sidewall formula which comprises natural rubber, butadiene rubber, wollastonite, carbon black, stearic acid, zinc oxide, an anti-aging agent, microcrystalline wax, tackifying resin, an accelerant and sulphur, a vulcanized product of the prepared composite material has good elasticity, and when the vulcanized product is damaged by periodic mechanical force action, the vulcanized product has good elasticity, so that the flex-resistant tire sidewall formula can be applied to a tire. The expansion speed of a flexural fatigue crack is relatively slow, so that the flexural fatigue crack expansion performance of the composite material is improved, the flexural resistance of the rubber material is improved. Meanwhile, the Payne effect of the rubber compound is weakened, a filler network structure constructed by the carbon black and the wollastonite is relatively weak and is easy to break and reconstruct under the action of periodic mechanical force, and thus, the flexural fatigue crack expansion performance of the composite material is improved. A molecular chain can more quickly adapt to external force, and internal friction generated by breaking of a filler network in the rubber fatigue process is reduced; the wollastonite in the raw materials is low in price, so that the production cost can be further reduced, and the social and economic benefits are improved.
本发明属于复合材料技术领域,涉及一种耐屈挠轮胎胎侧配方,包括天然橡胶、顺丁橡胶、硅灰石、炭黑、硬脂酸、氧化锌、防老剂、微晶蜡、增粘树脂、促进剂和硫磺,制备的复合材料的硫化制品具有较好的弹性,在承受周期性机械力作用的破坏时,屈挠疲劳裂口的扩展速度相对缓慢,使得复合材料的屈挠疲劳裂口扩展性能得到改善,胶料的耐屈挠性能提升,同时,混炼胶的Payne效应减弱,因为炭黑与硅灰石共同构建的填料网络结构相对较弱,在受到周期性机械力作用时容易打破和重建,分子链能够更快地适应外力作用,降低橡胶疲劳过程中填料网络打破产生的内耗;其原料中的硅灰石价格低廉,能够进一步降低生产成本,提高社会经济效益。
Tire sidewall formula of flexing-resistant tire
一种耐屈挠轮胎胎侧配方
2021-10-01
Patent
Elektronische Ressource
Chinesisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Europäisches Patentamt | 2023
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