Toughening epoxy resins to meet today's challenges

The Society for Adhesion & Adhesives
,
14 Aug 2008
Formation of a void in a rubbery particle

There are many advantages that polymeric adhesives can offer compared to the more traditional methods of joining, but the structure of such thermosetting adhesives also generally results in brittle materials, with a poor resistance to crack initiation and growth. The incorporation of a second phase of dispersed rubbery particles into the epoxy polymer can greatly increase toughness for applications where a very high impact resistance is required for the adhesively-bonded joint.