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>The influence of chemical structure on the dynamic properties of sulfur‐vulcanized, carbon black‐reinforced natural rubber
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The influence of chemical structure on the dynamic properties of sulfur‐vulcanized, carbon black‐reinforced natural rubber
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机译：The influence of chemical structure on the dynamic properties of sulfur‐vulcanized, carbon black‐reinforced natural rubber
AbstractA comparison is made of the composition and properties of the different rubber vulcanizate networks obtained by varying the ratio of sulfur to sulfenamide accelerator and by the thermal aging of vulcanizates containing predominantly polysulfide crosslinks. It is concluded that the changes in network structure which can take place, for example, during the service life of natural rubber tires are not the direct cause of failures of the type associated with rubber fatigue at high temperatures. However, a reduction in the total number of crosslinks can accelerate failure by increasing the amount of heat generated during flexing. More stable networks giving improved resistance to fatigue at high operating temperatures are obtained by the use of higher ratios of accelerator to sulfur than are conventionally employed.
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