Abstract

URREGO-YEPES, William; VELASQUEZ-RESTREPO, Sandra M.; GIRALDO-VASQUEZ, Diego H.  and  POSADA CORREA, Juan Carlos. REVIEW- EFFECT OF THE VULCANIZATION SYSTEM IN THE CROSSLINKED AND IN THE CHEMICAL VULCANIZATION REACTION OF NATURAL RUBBER. Rev.EIA.Esc.Ing.Antioq [online]. 2017, vol.14, n.28, pp.99-115. ISSN 1794-1237.  https://doi.org/10.24050/reia.v14i28.1144.

This work presents a review on the effect of the vulcanization system on the crosslinked structure formed during vulcanization reaction and the properties of natural rubber-based materials. These topics have been subject of research because of the wide variety of accelerants, accelerant/sulphur ratios, types of natural rubber and natural rubber-based formulations. Most of the studies use rheometry and differential scanning calorimetry (DSC) for evaluating natural rubber vulcanization, but both techniques do not provide information about the type of sulfidic crosslinks or the crosslinks density. The theme is of great scientific and industrial interest because natural rubber is the most traded rubber worldwide, and its vulcanization is carried out in the vast majority of formulations using sulfur as crosslinking agent.

Keywords : Natural rubber; vulcanization system; vulcanization reaction; crosslinked network; vulcanizing agent; accelerators.

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