Influence of rubber and fabric cord on deformation of a fabric cord-inserted rubber composite by thermal aging

NR composite and PET cord-inserted NR composite were prepared to investigate the contribution level for permanent deformation of fabric cord-inserted rubber composite by thermal aging. The degree of deformation of the PET cord-inserted NR composite was much larger than that of the NR composite without cord. The level of the contribution of the PET cord part on the permanent deformation was much larger than that of the rubber part for the thermal aging below 70 °C. The experimental results were explained by the increased crosslink density change of the rubber part and increased crystallinity of the PET cord part.