A feasibility study was carried out on the utilization of Alkanolamide (ALK) on silica
reinforcement of natural rubber (NR) by using a semi-efficient cure system. The ALK was
incorporated into the NR compound at 1.0, 3.0, 5.0, 7.0 and 9.0 phr. An investigation was
carried out to examine the effect of ALK on the cure characteristics and properties of NR
compounds. It was found that ALK gave shorter scorch and cure times for silica-filled NR
compounds. ALK also exhibited higher torque differences, tensile modulus, tensile
strength, hardness and crosslink density of up to 5.0 phr of ALK loading, and then
decreased with further increases of ALK loading. The resilience increased with increased
ALK loading. Scanning electron microscopy (SEM) micrographs proved that 5.0 phr of ALK
in the silica-filled NR compound exhibited the greatest matrix tearing line and surface
roughness due to higher reinforcement level of the silica, as well as better dispersion and
cure enhancement.
A feasibility study was carried out on the utilization of Alkanolamide (ALK) on silicareinforcement of natural rubber (NR) by using a semi-efficient cure system. The ALK wasincorporated into the NR compound at 1.0, 3.0, 5.0, 7.0 and 9.0 phr. An investigation wascarried out to examine the effect of ALK on the cure characteristics and properties of NRcompounds. It was found that ALK gave shorter scorch and cure times for silica-filled NRcompounds. ALK also exhibited higher torque differences, tensile modulus, tensilestrength, hardness and crosslink density of up to 5.0 phr of ALK loading, and thendecreased with further increases of ALK loading. The resilience increased with increasedALK loading. Scanning electron microscopy (SEM) micrographs proved that 5.0 phr of ALKin the silica-filled NR compound exhibited the greatest matrix tearing line and surfaceroughness due to higher reinforcement level of the silica, as well as better dispersion andcure enhancement.
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