Weathering Effects on Composites of Recycled Low Density Polyethylene with Fine Talc

摘要: A major problem in post-consumer plastics recycling is the degradation which occurs over lifetime of plastics. Generally fillers have been used to enhance mechanical properties recycled polymers. However, it still unclear if environmental factors, such as temperature, sunlight, oxidation and moisture cause any loss or compromise integrity composites. In this work, test specimens low density polyethylene (LDPE) reinforced with fine talc were produced by mixing a twin screw extruder injection moulding produce standard samples. These samples exposed accelerated ageing QUV weathering chamber for different times then tested properties. There was significant decrease tensile strain strength increasing length exposure time, while other showed no effects. It also observed that unreinforced LDPE tends age at higher rate relative LDPE. The changes attributed reduction molecular weight after UV radiation. carbonyl index obtained from FTIR spectra aged faster than samples' surfaces using scanning electron microscopy found network cracks increased aging under radiation decreased addition talc. This talc's nucleation effect