Optimization of the binder s network of a highly filled polyurethanebased composite using Taguchi experimental design

The use of composite materials with their high stiffness, high strength, and modulus makes polymeric matrixes even more competitive for many applications. In this work, ammonium perchlorate reinforced hydroxyl terminated polybutadiene (HTPB) polymer composites were developed by mechanical stirring followed by casting technique. A systematic approach via Taguchi design of experiments (DoE) was implemented to investigate factorial effects of NCO/OH ratio (R value), triol/diol ratio (ρ), bonding agent and plasticizer concentration on the mechanical properties of the composites. Taguchi approach enables to determine optimal parameter settings that lead to maximization of modulus at moderate elongation. The results indicate that the concentration of plasticizer and R value have a more significant effect comprised to ρ and bonding agent content on the mechanical properties of the obtained composites.