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Synergistic effects in the fracture performance of epoxy polymers modified with silica and silicone nanop articles

Epoxy polymers find use primarily as adhesives and as the polymer matrix of composite materials. They are amorphous and highly-crosslinked materials. Hence, although they have a relatively high modulus, they are inherently brittle. The fracture toughness can be improved by introducing a number of se... Full description

Published: Red Hook, Curran Associates, 2015
Kongresse: Annual Meeting of The Adhesion Society 38 2015.02.20-2015.02.25 Savannah, GA, US
Annual Meeting of the Adhesion Society 38th 2015.02.20-2015.02.25 Savannah, GA, US
Contained in: Annual Meeting of the Adhesion Society, 38 (2015), p. 90-93
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Additional Keywords: ANHYDRID
BRUCHZAEHIGKEIT
EPOXIDHARZ
HYBRIDVERBUNDWERKSTOFF
KLEBSTOFF
MIKROGEFUEGE
NANOPARTIKEL
POLYMER-MIT-SILICIUM
SILICIUMDIOXID
SILICON:POLYMER
VERBUNDWERKSTOFF
VERDUENNUNGSMITTEL
VERSUCHSDATEN
ZUSAMMENWIRKUNG
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 4 Seiten, 9 Quellen
PPN (Catalogue-ID): WTI058292152
Note: WTI TEMA DB
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Internes Format
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520 |a Epoxy polymers find use primarily as adhesives and as the polymer matrix of composite materials. They are amorphous and highly-crosslinked materials. Hence, although they have a relatively high modulus, they are inherently brittle. The fracture toughness can be improved by introducing a number of secondary phases into the bulk epoxy. The current study investigates how the modification of an anhydride cured epoxy polymer with silica and core shell rubber (CSR) nanoparticles affects the bulk microstructure and fracture performance. Additionally, the effect of incorporating a reactive diluent with the epoxy resin is discussed. Mechanical tests and microscopy were undertaken to characterise the properties of the modified epoxy polymers. The fracture toughness and the toughening mechanisms are also discussed. The mechanical and fracture performance of an epoxy modified with silica and polysiloxane nanoparticles was investigated. The role of a reactive diluent was also examined. The diluent increased the level of toughening for rubber modified materials but decreased the toughening effect for materials modified with just silica nanoparticles. The predicted fracture energies compared well with the experimental data, although the synergy in hybrid materials is still not well understood, although good dispersion of both minority phases is a minimum requirement. 
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653 4 |a VERDUENNUNGSMITTEL 
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711 2 |a Annual Meeting of The Adhesion Society  |n 38  |d 2015.02.20-2015.02.25  |c Savannah, GA, US 
711 2 |a Annual Meeting of the Adhesion Society  |n 38th  |d 2015.02.20-2015.02.25  |c Savannah, GA, US 
773 0 8 |i In  |t Annual Meeting of the Adhesion Society, 38  |g (2015), p. 90-93  |q <90-93  |z 978-1-5108-1009-9  |z 978-1-5108-1009-9 
912 |a GBV_WTI 
950 |a Siliciumdioxid  |a Verdünnungsmittel  |a Silikon (Polymer)  |a Klebstoff  |a Kompositwerkstoff  |a Anhydrid  |a Polymer mit Silicium  |a Epoxidharz  |a Hybridmaterial  |a Nanopartikel  |a Mikrostruktur  |a Bruchzähigkeit  |a Synergieeffekt  |a experimentelle Daten  |2 DE-601 
950 |a reactive diluent  |a Sekundärphase  |a bulk microstructure  |a toughening mechanism  |2 DE-601 
951 |a AR 
952 |j 2015  |h 90-93