Design and manufacturing of new elastomeric composites: Mechanical properties, chemical and physical analysis

NR/BR based composites at different vulcanization temperatures and using different curing systems were manufactured. Tensile strength, elongation at break, tensile modulus at 100% (M100) and at 300% (M300) deformation hardness (Shore A) of the composites were determined. Scanning electron microscopy was used to study the microstructure of the fracture surfaces. The main findings are that CV gives more reliable results for multi-purpose applications. Effective vulcanization system is suitable for application in areas where good aging resistance is needed and also in applications where low deformations are expected. Vulcanization temperature does not play significant role although most of the results are in favor of the lower temperature (140 °C).