In recent years, layered silicates inorganic material has been widely used as a nanofiller in the thermoset material to improve the mechanical, physical, thermal and barrier properties of the polymer. Montmorillonite (MMT) is one of the layered silicates that is commonly used as reinforcement nanofillers in polymeric matrices, including the epoxy owing to its excellent physico-chemical characteristics. This chapter reviews and summarizes the findings collected from several published research on the epoxy composites and nanocomposites with single and hybrid fillers, with emphasis on the use of layered silicate as a co-filler in the hybrid nanocomposite system. Furthermore, the published works on the epoxy nanocomposite with hybrid MMT/geopolymer fillers for piping application are compiled and summarized at the end of this chapter. These findings indicate that the use of hybrid MMT/geopolymer fillers can significantly improve the mechanical properties of the epoxy, revealing the great potential of this hybrid filler system in reinforcing the epoxy for piping application.
