Measurement of heat capacity and thermal conductivity of HDPE/expanded graphite nanocomposites by differential scanning calorimetry

摘要: Purpose: In this study, heat capacity and thermal conductivity of nanocomposites formed by high density polyethylene (HDPE) matrix expanded graphite (EG) conductive filling material were investigated. Design/methodology/approach: Nanocomposites containing up to 20 weight percent filler prepared mixing them in a Brabender Plasticorder. Two grades fillers used namely with 5 µm (EG5) 50 (EG50) diameter. Heat pure HDPE the measured using differential scanning calorimetry (DSC). Findings: A substantial increase was observed addition HDPE. Thermal increased from 0.442 W/m.K for 0.938 7% expended graphite. increases temperature both filled no appreciable difference values detected due particle size. decreased increasing content size, following low mixtures. Practical implications: Layers have become intense interest as polymeric nanocomposites. Upon intercalates exfoliates into nanometer thickness sheets their sheet-like structure week bonds normal sheets. That way they very big surface area aspect ratio (200−1500) what results formation percolating network at content. The nanoparticles usage significant improvement thermal, mechanical, electrical properties polymers even loading levels compared microparticles. Originality/value: To see effect conducting on two different sizes used.