Efecto del sistema de vulcanización en la red entrecruzada y en la reacción química de vulcanización del caucho natural

William Urrego Yepes, Sandra Milena Velásquez Restrepo, Diego Hernán Giraldo Vásquez, Juan Carlos Posada Correa

Resumen


Se presenta una revisión sobre el efecto del sistema de vulcanización en la estructura formada durante la reacción de vulcanización, en la cinética de la reacción y en las propiedades de formulaciones que emplean caucho natural. Se encontró que aún existen aspectos por investigar dada la variedad de acelerantes, proporciones acelerante/azufre, tipos de caucho natural y formulaciones que emplean caucho natural. La mayor parte de la literatura evalúa la reacción de vulcanización mediante reometría de vulcanización y calorimetría diferencial de barrido (DSC), pero estas técnicas no permiten identificar el tipo de enlaces sulfídicos formados ni la densidad de enlaces entrecruzados. La temática es de gran interés científico e industrial pues el caucho natural es el caucho más comercializado a nivel mundial, y su vulcanización se realiza en la gran mayoría de las formulaciones empleando azufre como agente entrecruzante.

Palabras clave


Caucho natural, sistema de vulcanización, reacción de vulcanización, red entrecruzada, agente vulcanizante, acelerantes

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Referencias


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DOI: https://doi.org/10.24050/reia.v14i28.1144

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