Effects of Oven Ageing on Linear Low Density Polyethylene (LLDPE)/Recycled Acrylonitrile Butadiene Rubber (NBRr)/Rice Husk Powder (RHP) Composites

摘要

The thermal degradation of linear low density polyethylene (LLDPE)/recycled acrylonitrile butadiene rubber (NBRr)/rice husk powder (RHP) composites with and without epoxidized nature rubber (ENR-50) were studied. The thermal degradation of this composite was evaluated for 30 days using oven ageing. The NBRr content was manipulated in this work and the particle size for the rice husk powder was 150-300μm. The composites were prepared by using two-roll mills at 180°C and then were compressed at 180°C to produce a 1 mm thin sheets. The dumbbell samples then were analysed by using universal testing machine and field emission screening electron microscopy for tensile and morphological properties. The results obtained showed that tensile strength was decreased with the increasing of NBRr content for both oven ageing and control composites. However the oven ageing composites recorded much lower tensile properties. This may possibly due to the chain session of LDPPE matrix at longer heat exposure duration. This finding is supported by the morphological micrograph with less ductile features of the respective specimens.