The application of diacylhydrazine material CSC920(abbreviated as CSC920)in the tread base compound of truck and bus radial tires was studied.The results showed that CSC920 had a good modification effect on natural rubber,which could significantly accelerate the vulcanization reaction rate of the compound and increase the Mooney viscosity of the compound.After adding CSC920,the modulus at a given elongation,tensile strength,and elasticity of the base compound were improved,while the rolling resistance and heat build-up were significantly reduced.During the mixing process,the addition of CSC920 before zinc oxide resulted in better physical properties of the base compound and a significant reduction in compression heat build-up,the addition of CSC920 after zinc oxide could have an anti-reversion effect,improving the physical properties of the base compound,but the effect of reducing heat build-up was not significant.
bishydrazide materialtruck and bus radial tiretread base compoundphysical propertyheat build-up
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