Skip to Main content Skip to Navigation

Origin of epoxies embrittlement during oxidative ageing

Abstract : Thermal oxidation of three epoxy resins prepared from flexible or rigid prepolymers and hardeners was studied by monitoring epoxy mechanical and physical changes. The physical changes were followed by mass measurements, glass transition temperature using DSC and sub-glass β transition using DMA. It was put in evidence that embrittlement is not directly associated to Tg or mass loss changes since epoxy network based on isophorone diamine (IPDA) hardeners were shown to undergo mainly a chain scission at the beginning of exposure process whereas epoxy network based on trioxatridecane diamine (TTDA) hardeners exhibits a crosslinking process with a significant mass loss. The only common feature for both epoxy systems to understand embrittlement is the drop of amplitude of β transition with oxidation.
Complete list of metadatas

Cited literature [24 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01593556
Contributor : Compte de Service Administrateur Ensam <>
Submitted on : Tuesday, September 26, 2017 - 2:19:39 PM
Last modification on : Thursday, March 26, 2020 - 8:59:31 AM
Document(s) archivé(s) le : Wednesday, December 27, 2017 - 1:17:22 PM

File

PIMM - PT - ERNAULT - 2017.pdf
Files produced by the author(s)

Identifiers

Citation

Esteve Ernault, Emmanuel Richaud, Bruno Fayolle. Origin of epoxies embrittlement during oxidative ageing. Polymer Testing, Elsevier, 2017, 63, pp.448-454. ⟨10.1016/j.polymertesting.2017.09.004⟩. ⟨hal-01593556⟩

Share

Metrics

Record views

95

Files downloads

298