Publication detail

Enhanced Charpy impact strength of epoxy resin modified with vinyl-terminated polydimethylsiloxane

Jarmila Vilčáková, Lenka Kutějová, Marek Jurča, Robert Moučka, Robert Vícha, Michal Sedlačík, Adriana Kovalcik, Michal Machovský, Natalia Kazantseva

Original Title

Enhanced Charpy impact strength of epoxy resin modified with vinyl-terminated polydimethylsiloxane

Type

journal article in Web of Science

Language

English

Original Abstract

This article deals with enhancement of the toughness of epoxy resin (ER) based on diglycidyl ether bisfenol A by either polydimethylsiloxane (PDMS) or vinyl-terminated polydimethylsiloxane (VT-PDMS). To improve the compatibility of these two phases, dicumylperoxide (DCP) was used as a compatibilizer. It was established that only specific composition of the components can lead to enhancement of ER toughness without significant reduction of storage modulus, Tg, and interphase adhesion. The highest impact strength was recorded for ER with VT-PDMS (10 wt %) and DCP (2 wt %) due to increased interfacial compatibility between two phases, which was proved by 1H NMR and dielectric spectroscopy. Critical ductile brittle transition occurring between 10 and 15 wt % of rubber was observed by both morphological and dynamic mechanical analysis studies.

Keywords

adhesives; dielectric properties; elastomers; mechanical properties; thermosets

Authors

Jarmila Vilčáková, Lenka Kutějová, Marek Jurča, Robert Moučka, Robert Vícha, Michal Sedlačík, Adriana Kovalcik, Michal Machovský, Natalia Kazantseva

Released

15. 1. 2018

Publisher

John Wiley & Sons, Inc.

Location

New Jersey

ISBN

1097-4628

Periodical

Journal of Applied Polymer Science

Year of study

135

Number

45720

State

United States of America

Pages from

45720-01

Pages to

45720-12

Pages count

12

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