Prediction and Investigation Particulate Fillers (Aluminum &Alumina) Effect on the Thermal Conductivity of Polymeric Matrix Composite (Polyester)

Abstract

The main objective of this paper is to study the thermal conductivity of compositematerials and the parameters affecting it, then to determining the validity of the besttheoretical model matching with experimental results and to predict thermalconductivity of any composite materials with different particle size.Alumina& aluminum filled thermoset polyester composites are investigated in thisstudy, and their thermal conductivity will be the central focus. Aluminum particle,alumina particle and aluminum fiber (5wt % to 45wt %) were added to polyestermatrixes. It was found that both fillers and fiber positively effect on the thermalconductivity of the composite. By using visual basic program, the results show thereare three different theoretical models (Maxwell Equation, Lord Rayleigh Equation&Lewis and Nielsen Equation) valid to predict the effective thermal conductivity forreinforced the polyester by Al and Al2O3 powder until 35wt% and 45wt% respectively.In addition, the rule of mixture model is good to predict the effective thermalconductivity (for aluminum fiber parallel with polyester matrix).