Mr Pol Ulier
GLOO - RCONCEPT & Grup Enginyeria de Materials GEMAT (IQS-URL)
Engineer (MSc. Industrial Engineering) enthusiast for innovation in the field of Materials Science, which lead to the completing of MSc. of Materials Science and Engineering. He worked as a researcher in both his master thesis with the academic tutorship of S.Borros and
N. Agulló (GEMAT) while collaborating with GLOO in the development of novel epoxy adhesives. Now he is responsible for R&D department at GLOO, always open minded to make a step forward to make adhesives and composites industry more sustainable.
Strategies for eco-designing disbonding on demand epoxy adhesives
The adhesives industry has always been on the pursuit of stronger and more durable adhesives to face the most demanding joint problem. However, the current climate emergency demands a step forward in this path, to not only design a high-performance adhesive, but also one that allows circularity of the assembly.
Epoxy adhesives have the lead when thinking in high performance structural adhesives in terms of mechanical properties, chemical resistance and high adhesion. This privileged position, however, make the circularity challenge especially difficult. This work clarifies the strategies to address this challenge and proposes the solutions that can be implemented to design disbonding-on-demand epoxy adhesives.
The first proposal is a physical mechanism. With the additivation of Thermo-expandable microspheres (TEMs) in the adhesive matrix that have insignificant impact to mechanical properties, structural adhesives can be disbonded with a thermal trigger at feasible temperatures, typically 50ºC over their Tg.
Secondly, a chemical mechanism is suggested. Here two approaches can be considered: when a classic epoxy-amine system is to be dismantled, a novel Zinc salt catalyzed solvolysis is a successful option. One step forward is to design formulations with cleavable hardeners especially meant to be broken in milder conditions.
Co-author(s): Javier Gómez, Jordi Arbusà, Francisco Ripoll, Jaime Ferrer-Dalmau, Núria Agulló, Salvador Borrós
Friday, 15 September 2023, 08:30 - 09:00