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Blends of a new thermoplastic in a thermoset epoxy matrix
Author(s) -
Constantin François,
Fenouillot Françoise,
Guillaume JeanLuc,
Koenig Raymond,
Pascault JeanPierre
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200350828
Subject(s) - thermosetting polymer , thermoplastic , epoxy , materials science , diglycidyl ether , composite material , miscibility , bisphenol a , amine gas treating , polymer chemistry , polymer , organic chemistry , chemistry
Properties of thermoplastic modified epoxy network have been studied. The particularity of this work is the use of new thermoplastic epoxies whose structure is close to the final matrix. Blends of thermoset epoxy (Diglycidyl Ether of Bisphenol A/4‐4′ methylenebis [3‐chloro 2,6‐diethylaniline]) with a thermoplastic content from 5 to 40%w have been realised. Initial miscibility in the thermoset precursors shows an UCST behaviour with a maximal value near 130°C for a thermoplastic content of 10%. Due to the presence of tertiary amine and pendant hydroxyl groups on the thermoplastic backbone, epoxy amine reactions are faster than for the neat system but the thermoplastic seems not to have reacted with the thermoset network. The final blends are transparent but toughening increase is rather low.