Tensile strength of sawdust reinforced vinyl ester composites

Abstract

Vinyl ester composites have been widely used in the construction industry due to its superiority material properties. The purpose of this project to research, measure the tensile strength, yield strength and Young’s modulus according to the tensile test to find the optimum percentage rate of the vinyl ester and fillers (sawdust). Tensile testing of tensile strength measurement was used to perform tests to find out the optimum percentage fillers by weight cured vinyl ester composites in conventional oven. The results show that the 20 percentage by weight sawdust vinyl ester composites are optimum. These type of samples have the highest tensile strength and yield strength. And 425 μm sawdust composites Young’s modulus is constant. The results show that some important features of the fracture surface by using SEM microscopy. The micrographs show some important features such as particles elongation, resin dislocation and compaction of resins and fillers. There are six specimens for each type of composites. At 20 % by weight of sawdust (300 μm), the tensile strength is highest (27.758 MPa). The highest yield strength (20.394 MPa) is obtained for the composites with 20 % by weight of sawdust (300 μm)