How does the curing time affect the mechanical properties of NBR/clay/CSP nanocomposites?

Label:chem

Topic
The curing time is a critical factor in the vulcanization process of rubber composites. In this study, the NBR/clay/CSP nanocomposites are subjected to different curing times to evaluate their impact on the mechanical properties.
Answer
The mechanical properties of NBR/clay/CSP nanocomposites are highly dependent on the curing time. Longer curing times lead to higher crosslinking density and glass transition temperature (Tg), resulting in stronger interfacial interactions between CSP particles and the NBR matrix. The study finds that the NBR/clay10/CSP20 nanocomposite cured for 70 minutes exhibits the best mechanical properties, with a tensile strength of 37.4 MPa and an elongation at break of 354%. Further increasing the curing time does not significantly improve the tensile strength.
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