Mechanical properties of nano-MMT reinforced polymer composite and polymer concrete

Unsaturated polyester (UP) resin is widely used for the matrix of composites such as fiber reinforced plastic (FRP) and polymer concrete. Consequently, inexpensive and high performance resins are important for the future of polymer composites. One recent method for enhancing the performance of polymer composites is the manufacture of MMT (montmorillonite)-UP nanocomposite synthesized by intercalating the UP resin into the silicate layers of MMT. This study investigates the mechanical and thermal properties of MMT-UP nanocomposites, and those of polymer concretes using these nanocomposites. Test results indicate that the mechanical properties and thermal stability of MMT-UP nanocomposites are better than those of pure UP. The glass transition and main chain decomposition temperatures of the MMT-UP nanocomposite exceed those of pure UP. The compressive strength, elastic modulus, and splitting tensile strength of the polymer concrete using MMT-UP nanocomposites exceeded those of polymer concrete using pure UP. Also, the polymer concrete made with MMT-UP nanocomposite has better thermal performance than that of pure UP. The improved performance of UP is very important for the future of polymer concrete.