MECHANICAL PROPERTIES OF SELECTED EPOXY ADHESIVES

The article presents the results of tests of mechanical properties of selected epoxy adhesives. The study used 6 types of adhesive compositions prepared from three types of epoxy resins Epidian 5, Epidian 53 and Epidian 57, which were mixed with the hardener PAC 100: 100 and 100: 80. During the implementation of research two sets of samples were prepared: samples of adhesives in hardened state and single lap adhesive joints of steel sheet C45 made by using these epoxy adhesives. By studying the results of strength tests of adhesive joints and adhesive layer thickness, was observed a dependence – when the weld has a smaller thickness, the strength of the connection is greater. One single-lap adhesive joints prepared with Epidian 57 / PAC / 100: 80 have the highest strength (14.9 MPa), with the smallest adhesive thickness (0.2 mm). When using Epidian 5 / PAC / 100: 80, the lowest static strength (6.69 MPa) was obtained.