Preparation and Characterization of Modified Nano Carbon Black/Polyurethane Composites

Surface modified nano carbon black particles(MCB) were used to prepare PU/MCB and PU/CB composites. FTIR, TEM, rheological methods and mechanical properties test were utilized to characterize the nano particles and their composites. FTIR results indicate that partial hydrogen-bonding structure in PU composites changed due to the interaction between nano particles and PU molecules. The tensile strength and elongation at break of the PU/MCB composites can be reinforced by adding optimal content (<5%) of MCB particles. The rheological results indicate that there are obvious interactions between PU molecules and carbon black particles in solution.