Effects of Some Additives on the Tensile Strength and Young Modulus of Epoxy Resin
Published: 2023-05-08
Page: 233-237
Issue: 2023 - Volume 6 [Issue 2]
M. U. Onuoha *
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P.M.B 5025, Awka, Nigeria.
C. M. Ekwunife
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P.M.B 5025, Awka, Nigeria.
E. E. Okpala
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P.M.B 5025, Awka, Nigeria.
O. J. Okeakpu
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P.M.B 5025, Awka, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Epoxy resin was mixed with bone powder, PMMA and Animal hair at 0%, 0.01%, 0.05%, 0.1%, 0.5%, 1.5% and 5.0% levels. The tensile strength and the modulus were determined using Instron Universal Testing Machine. The results showed that as the filler load increases, modulus increases in the order: 848.472> 907.4847>939.6108Mpa for PMMA, Bone powder and Animal Hair respectively. On the other hand, as the filler load increases, the tensile strength of the composite decreases in the order: 49.9766>42.7583>34.7440Mpa for Bone powder , PMMA and Animal Hair respectively. The poor tensile strength of the composite could be attributed to the presence of cross-linking in the epoxy resin, a thermoset. This cross-linking prevents the filler from having maximum surface interaction with the matrix.
Keywords: Epoxy resin, tensile strength, young modulus