Modification of the mechanical properties of rubbers by introducing recycled rubber into the original mixture

C. S. Varga, N. Miskolczi, L. Bartha, L. Palotás

Research output: Contribution to journalArticle

3 Citations (Scopus)


In our experimental work the opportunities of improving of mechanical properties of rubbers and their composites have been investigated. On the one hand the reuse of milling product of recycled rubbers (recycled crumb rubbers) has been studied and the effects of the filler and compatibilizers applicable in rubber composites on the mechanical properties either. The rubber composites were exposed to different mechanical stresses (tensile, fatigue tensile) and Shore A hardness and density of the specimens have also been determined. Morphology of the composites and the interaction between the fillers and the rubber has been studied on SEM graphs. Recycled crumb rubber was added in different concentrations to the basic mixture of rubber. Significant improvement of mechanical properties could be achieved by mixing 22m/m% used crumb rubber to the basic mixture. Tensile strength at break of composites containing recycled crumb rubber increased with nearly 20% compared to the original basic mixture containing no crumb rubber. Density decreased with 2-3% and Shore A hardness with 6% comparing the aforementioned composites. Different types of compatibilizing additives have also been applied in the system containing crumb rubber which showed different effectiveness in case of the properties, e.g. tensile strength at break. Adding compatibilizing additives to the basic mixture of rubber did not make the density changed while Shore A hardness changed similarly to the trend observed in case of tensile strength at break.

Original languageEnglish
Pages (from-to)352-358
Number of pages7
JournalGlobal Nest Journal
Issue number4
Publication statusPublished - Dec 1 2010



  • Compatibilizing additive
  • Reuse of recycled rubber
  • Rubber composites

ASJC Scopus subject areas

  • Environmental Science(all)

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