Abstract
A study of the mechanism of gluing between plasma-modified styrene–butadiene elastomer (SBS) surfaces and polyurethane (PU) adhesives is presented in this paper. The plasma treatment was carried out employing low-pressure O 2 plasma generated by an RF discharge (13.56 MHz). FTIR–ATR spectroscopy and peel tests were utilized to characterize the SBS surfaces before and after the plasma treatment. It was found that hydroxyl groups are mainly created on the SBS surface by the plasma treatment and their concentration reveals very good linear correlation with the peel strength of the SBS–PU joints. The grafting of phenyl isocyanate (analog of the PU curing agent) into the plasma-treated SBS surface was also investigated. The process was performed at 353 K, that is at temperature in which the adhesive-bonded joints were made. It was shown that all hydroxyl groups on the SBS surface react with isocyanate groups forming carbamate bonds. The results obtained in this work strongly confirm the conception of the adhesion by chemical bonding between SBS and PU.
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 callDisclaimer: 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.
