Services on Demand
Journal
Article
Indicators
Cited by SciELO
Access statistics
Related links
Similars in SciELO
Share
Journal of applied research and technology
On-line version ISSN 2448-6736Print version ISSN 1665-6423
Abstract
KHERBOUCHE, A.; BENIDIR, A. and BEZZAZI, B.. Study of rheological characteristics and mechanical strength properties of natural rubber vulcanizates varying the type and content of carbon black. J. appl. res. technol [online]. 2023, vol.21, n.6, pp.1050-1056. Epub Aug 13, 2024. ISSN 2448-6736. https://doi.org/10.22201/icat.24486736e.2023.21.6.2083.
This paper presents a study about the influence of the size and content of two types of carbon black N220 and N550 with loading of 10-100 phr on the properties of the vulcanized natural rubber (NR). The mechanical characteristics such as the tensile strength, the tensile modulus, the elongation at break, the hardness, the abrasion resistance, and rheological properties of NR reinforced with carbon black were investigated. By analyzing the results of an N220 reinforced NR, the reinforcement gives improvement in tensile strengths when fillers are added up to 70 phr. However, and by referring to elongation at break, a fall of product elasticity is observed. The increase of filler loading results a decrease in rheological properties; optimum cure time, scorch time, cure rate index (CRI). Nevertheless, the N220 rubber compound exhibits slightly higher hardness than those registered for the N550 compounds. Regarding the mechanical properties under tensile stress, the engineer's findings are comparative for all the samples of the study. However, the rubber compound filled N220 or N550 gives comparable results on mechanical properties.
Keywords : Natural rubber NR; carbon black CB; N220; N550; cure characteristics; tensile strength.
