The relationship between tensile strength and vulcanisation system

27/12/2024
image
1. Crosslinking density with the increase of crosslinking density, tensile strength increases, and there is a great value, and then, with the further increase of crosslinking density tensile strength decreases, so to obtain a higher tensile strength, must be appropriate to select the amount of crosslinking agent, control the crosslinking density and tensile strength of the equilibrium of relations.
2. The influence of crosslinking bond type, the tensile strength of vulcanised rubber decreases with the increase of crosslinking bond energy. Multi-sulfur bond has a higher tensile strength, therefore, in considering the adjustment of the vulcanisation system to improve tensile strength, can first consider the appropriate increase in the amount of sulfur yellow, so that the vulcanised rubber to multi-sulfur bond is dominated by the choice of thiazole accelerant (such as MBT, MBTS) and guanidine, the total amount of accelerant can be increased appropriately, this approach is particularly effective in the formulation of the very high gum content.