Pengaruh Suhu Pencampuran Terhadap Kekuatan Tarik Dan Fracture Toughness Epoxy Resin – Organoclay Montmorillonite Nanokomposit

Abstract

Abstract : This research aimed to determine the effect of mixing temperature on the mechanical characteristics epoxy resin - organoclay montmorillonite nanocomposite form of tensile strength and fracture toughness. Composites made from nanomer I.30E, bisphenol A epoxy resin and curing agent versamide 140 with heat mixing method with variations in temperature 60 ° C, 80 ° C, 100 ° C, 120 ° C, 140 ° C. Mixing process is carried out for 3 hours at a speed of 350 rpm with 2% of the volume fraction of montmorillonite. Tensile strength refers to the ASTM D 638 while the fracture toughness testing refers to ASTM D 5045. Observations on the fracture surface of the composite cross section is done using SEM (Scanning Electron Microscopy). The results of this study are as follows: (1) increase in temperature from 60 °C mixing to 100 °C will raise the mechanical strength of the composite, (2) tensile strength increased by 7.21% fracture toughness increased by 50%, (3) after the temperature reaches 120 °C mechanical strength began to drop because the secondary bond is lost and because of the void, (4) down 2.58% tensile strength and fracture toughness down by 23.33%.

Keywords : Epoxy-montmorillonite, composite, Tensile strength, Fracture toughness