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Mar 23, 2020

ACS Spring 2020 National Meeting & Expo

Latent catalysts in high-performance polymeric matrix processing for lightweight fiber-reinforced structures

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Abstract

A successful, energy efficient and thus economical realization of lightweight structures based on fiber-reinforced composites is one of the prerequisites for reducing energy consumption, whether in arespace, automotive or architecture. Within that context, fiber-reinforced composites play a crucial role. However, in order to become successful, they require cheap high-performance fibers, perfect fiber-matrix interaction and fast curing thermo- or duroplastic high-performance matrices and, last but not least, a fast processing technology that brings both parts together. Focussing on matrices, these must show fast and complete curing, minimum volume contraction, low water uptake and other, application-dependant properties. In this presentation, relevant aspects of fiber composite technology and processing, the fast curing of fiber matrix composites and their relvane to leightweight construction will be presented. Different matrix systems and the use of fully latent pre-catalysts in the polymerization of methyl methacrylate, various lactames, epoxides, e-caprolactone, dicyclopentadiene and for the synthesis of poly(urethane)s will be discussed. Within that context, protected N-heterocyclic carbenes (NHCs) and NHC-metal complex-based catalysts play a predominant role. Their role and potential as well as mechanistic aspects will be addressed. Finally, the realization of room temperature-stable, latent resin systems based on one-component systems for reaction transfer molding applications including fiber-matrix composites, will be addressed.

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© Copyright 2019 Morressier GmbH.
All rights reserved.