Influence of Chemical Structure on the Thermal and Mechanical Properties of Structural Adhesives

Resumo

This study aims to evaluate the influence of the chemical structure of acrylic and epoxy structural adhesives on their thermal and mechanical properties. Differential scanning calorimetry (DSC) and uniaxial tensile strength tests were conducted to assess the characteristic transition temperatures and mechanical properties. The DSC results indicated that the acrylic adhesives have higher glass transition temperatures than the epoxy-based adhesives. Regarding mechanical properties, the epoxy adhesives exhibited greater maximum resistance and lower deformation at break than the acrylic adhesives. The findings revealed that the chemical structure of adhesives significantly influences their thermal and mechanical properties, necessitating careful selection based on the specific application requirements across a wide range of products being developed and commercialized.