Abstract
Today Nylon 6, 66 cords generally used for reinforcing rubber compounds. To increase interfacial adhesion of cords to rubber they are coated by an adhesive. Many factors are known to affect the bond strength secured with RFL adhesives. In this study participation of moisture on physical properties (strength and elongation at maximum load) and dipped cord adhesion of Nylon 6 and 66 to rubber were studied. The results of this study showed that moisture exposure of nylon 6, 66 dipped tire cords reduces adhesion due to degradation effect of moisture on Isocyanate groups and impairs its curing with the solid rubber compound. Strength and elongation at maximum load was found to decrease and increase respectively due to moisture absorption, since moisture causes hydrolytic degradation of nylon 6, 66 molecular chains and have plasticizing effect. This mechanism also explains the effectiveness of drying treatment on adhesion and strength. Keywords: H-adhesion, Cord to rubber adhesion, RFL, Moisture, Physical properties

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مدیر سایت دوشنبه 2 اردیبهشت‌ماه سال 1392 ساعت 11:54 ق.ظ