Influence of modulus of elasticity and Mooney viscosity on the homogeneity of rubber products

The uniformity of rubber products is one of the important indicators of the quality of rubber products. For some special rubber products, such as rubber bladders, uniformity becomes a decisive indicator of their quality. There are many factors affecting the uniformity of rubber products, but the effects of elastic modulus and Mooney viscosity of rubber materials on the uniformity of rubber products have not been systematically studied. To avoid the chance of experimental results, this paper uses different molding processes to prepare the same kind of rubber products. Then the effects of elastic modulus and Mooney viscosity on the uniformity of rubber products are observed by comparing the results of different kinds of rubber products. The results show that for cylindrical rubber products such as rubber bladders, there exists an optimal interval between the homogeneity and the material’s Mooney viscosity and elastic modulus, with the optimal interval for the Mooney viscosity being [40, 60] and the optimal interval for the elastic modulus being [6.63, 8.40] MPa.