Flexural Properties and Thermal Conductivity of Aluminium Nitride Filled Polypropylene Composite

Abstract

Aluminium Nitride (AlN) filled Polypropylene (PP) composites are fabricated, where the compounding is carried out by using Z- blade mixer with filler loadings of 0wt%, 10wt%, 20wt% and 30wt%. Composite sheets produced from hot press molding process are prepared for testing samples. The effect of filler loadings and incorporation of titanate coupling agent on flexural properties and thermal conductivity are studied. The results demonstrate that, an increase in filler loading is found to increase the flexural modulus, flexural strength and thermal conductivity of AlN filled PP composites. By adding 2% titanate coupling agent (Lica 12), the decrease of flexural strength and flexural modulus with increasing filler loadings can be observed in 10%AlN-90%PP composite. However, the addition of 5% titanate coupling agent in 10%AlN-wt%PP composite allowed the increment of flexural strength and flexural modulus and assisted in greater increment of thermal conductivity of the composites.