Actions

Download Analytics Citations

Export to: EndNote  |  Zotero  |  Mendeley

Collections

This file is not currently in any collections.

Interface Development in Ambient-Cured Epoxy Resin Bilayer Coatings [dataset] Open Access

The interfaces between layers of epoxy resin coatings are industrially important yet are challenging to study because of the inherent lack of chemical distinction and the highly cross-linked nature of the materials involved. Labelled probe molecules, acting either as proxies for epoxy resin components or penetrating solvents, reveal the significance of process parameters on the formation of the interface between epoxy resin layers. 4-Chlorophenyl glycidyl ether (4-ClPGE), which is similar in size and solubility to epoxy resin components, could penetrate much of the way into 150-micron ambient cured epoxy resin films, indicating the importance of interdiffusion for epoxy-epoxy interlayer adhesion. Increasing the temperature or duration of the ambient cure led to a systematic decrease in ingress of 4-ClPGE into an epoxy resin coating. Most significantly, either post-curing (80 °C, 16 hours) or curing at high relative humidity (80%) could prevent the ingress of the 4-ClPGE. The crosslink density of the interfacial region of 2-layer, post cured films were studied at the micron and nanometre scale using Raman mapping and neutron reflectometry respectively. No clear signs of interlayer adhesion failure were observed at either length scale, but distinctly different layers, attributed to the formation of an interphase region, could be observed by neutron reflection, at low ambient cure temperature. This disparity in composition would a source of interlayer stress under cyclical solvent loading in coatings, which may ultimately be responsible for coating failure.

Descriptions

Resource type

Dataset

Contributors

Creator: Bannister, Callum C ¹
Data curator: Bannister, Callum C ¹
Editor: Bannister, Callum C ¹
Data curator: Beeby, Andrew ¹
Contact person: Thompson, Richard L ¹
Creator: Guy, Alan ²
Creator: Mihaylova, Ralitsa ²
Data curator: Hall, Stephen ³
Data curator: Porter, Lucy A ¹
Data curator: Cresswell, James D ¹

¹ Durham University, UK
² Safinah Group, UK
³ STFC ISIS, UK

Funder

EU-RDF
Safinah Group

Research methods

Raman Microscopy, Neutron reflection

Other description

Data for the neutron reflection experiments are available at  https://doi.org/10.5286/ISIS.E.RB2220087

Keyword

Raman microscopy data

Subject

Chemistry
Materials

Location

Language

Cited in

Identifier

ark:/32150/r105741r80b
doi:10.15128/r105741r80b

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

R.L. Thompson

Date Uploaded

13 February 2025, 17:02:03

Date Modified

18 February 2025, 13:02:24

Audit Status

Audits have not yet been run on this file.

Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 10684948

Last modified: 2025:02:13 17:56:07+00:00

Filename: CCB_RamanData.zip

Original checksum: 7e3ba4a94d8104a1e761b728b75c52dc