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为了研究存储和使用对乘用车轮胎性能的影响,检定了两组独立试样,这两组试样是:(1)在45~50℃温度下存储不同时间的轮胎;(2)行驶不同里程的旧轮胎。通过分析胎面胶的性能(200%定伸应力、拉伸强度、扯断伸长率、硬度、橡胶的粘弹性、溶胀度和油组分含量)对轮胎进行了分析。从增加存储时间和里程与轮胎性能变化的关系可以看出,增加存储时间和里程会使轮胎性能明显恶化。我们发现,在恶劣环境下使用时轮胎的这些性能变化速度明显加快。分析了有关交联密度变化和油组分从胎面胶向轮胎内部或向环境迁移的测试结果。
In order to study the impact of storage and use on the performance of passenger car tires, two separate sets of samples were tested, the two sets of samples being: (1) tires stored at different temperatures for 45 to 50 ° C; (2) Mileage of the old tires. Tires were analyzed by analyzing the properties of the tread rubber (200% modulus, tensile strength, elongation at break, hardness, rubber viscoelasticity, swelling, and oil content). From the relationship between increasing storage time and mileage and tire performance changes, it can be seen that increasing storage time and mileage can significantly degrade tire performance. We found that these performance changes were noticeably faster for tires when used in harsh environments. Test results on changes in crosslinking density and migration of the oil component from the tread rubber to the interior of the tire or to the environment were analyzed.