Abstract
AbstractThe oil absorption of a room‐temperature‐cured, two‐part epoxy adhesive on three metal substrates, cold‐rolled steel (CRS), 2024‐aluminum, and electrogalvanized steel (EGS), was studied using attenuated total reflection infrared spectroscopy (ATR). From relative absorbance ratios calculated from ATR spectra taken at different penetration depths, it was determined that the effectiveness of the adhesive in replacing the oil from the metal surfaces followed in the order of 2024‐Al > CRS > EGS. As thick as 20 microns oil could be absorbed from the 2024‐Al and CRS surfaces, but much less oil could be absorbed from the oiled EGS substrate. However, the heat applied during cure could greatly help the adhesive absorb oil from the EGS substrate. Distributions of adhesive functional groups with respect to penetration depths were found in adhesive layers adjacent to metal surfaces. The abundance of curing agents in the adhesive/EGS interfacial region resulted in the incomplete oil absorption observed on the oiled EGS substrate. The results from ATR also showed that the oil did not inhibit the cure of the adhesive in the bulk. © 1994 John Wiley & Sons, Inc.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Polymer Science Part B: Polymer Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
