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Nanosilica-Toughened Epoxy Resins
1Evonik Operations GmbH, Charlottenburger Strasse 9, 21502 Geesthacht, Germany.
Polymers
|August 14, 2020
Summary
Surface-modified silica nanoparticles enhance epoxy resins, improving toughness and fatigue performance in applications from composites to electronics. This review covers industrial uses and recent research on silica nanotoughening.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Surface-modified silica nanoparticles have been industrially available in epoxy resins for two decades.
- They are utilized in diverse applications including composites, adhesives, and electronics, even in aerospace.
Purpose of the Study:
- To provide an overview of silica nanotoughening possibilities in epoxy resins.
- To review industrial applications of these formulations.
- To present recent research findings in the field.
Main Methods:
- Literature review of existing research and industrial applications.
- Analysis of synergistic effects between nanosilica and traditional toughening agents.
Main Results:
- Nanosilica can compensate for drawbacks of conventional elastomer toughening, such as reduced modulus and strength.
- Synergistic effects observed when combining nanosilica with elastomers significantly enhance toughness and fatigue performance.
- Established industrial use in various high-performance applications.
Conclusions:
- Silica nanoparticles offer a viable and effective method for nanotoughening epoxy resins.
- The combination of nanosilica with other tougheners shows significant performance improvements.
- Continued research and development are expanding the applications of silica-modified epoxies.
