Synthesis and characterization of polyurethane matrix hybrid nanocomposites

Abstract

Mechanical and micro structural properties of polyurethane matrix composites are tested experimentally The experimental results are compared with modelling and FEA results for identifying the optimum composition of the additive particles percentage with polyurethane matrix The samples have been synthesized by solgel process with or without the addition of titanium dioxide nano particles in polyurethane matrix composites First the samples of polyurethane matrix composites have been synthesized without the addition of titanium dioxide nano particles Commercially available molybdenum disulphide is blended with the tetrahydrafuron solvent and then polyurethane is added pellet wise to the stirred suspension of tetrahydrafuron solvent in various concentrations to obtain the feasible viscosity of the suspension The suspended solution is stirred continuously for one hour using the mechanical stirrer and the mixing has been continued for another 10 minutes with high speed stirrer The suspended solution is cured for layer by layer approximately for 8 hours and the samples are cut into standard specimen sizes The different specimen from each sample has been taken for testing their mechanical properties The properties to be identified for three samples are obtained from varying percentage of molybdenum disulphide particles such as 7 10 and 20 of polyurethane blended with the tetrahydrafuron solvent newline