Research on the Adhesive Property of Polyethylene Terephthalate (PET) Cord and Nitrile-Butadiene Rubber (NBR) System

The adhesion between polyethylene terephthalate (PET) cord and nitrile-butadiene rubber (NBR) has been compared. The PET cord treated by hydrated silica-resorcinol-hexamethoxymethylmelamine (HRH) shows 300% T-test strength and 40% H-test strength adhesion to NBR higher than that of rescorcinolformaldehyde-latex (RFL) treated system. The adhesion mechanisms and models are analyzed and put up by Fourier transform infrared spectra (FTIR) and scanning electron microscopy (SEM). Results show that the rubber of HRH system has deeper penetration into the cord compared with that of RFL treated system, which leads to different adhesion behaviors of the two systems.