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Enhanced adhesion of EVA and NBR soles with polyurethane adhesives by cold atmospheric pressure plasmas.

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  • معلومة اضافية
    • نبذة مختصرة :
      The enhanced adhesion of polyurethane (PU) adhesives with ethylene-vinyl acetate (EVA) midsole and vulcanized acrylonitrile-butadiene rubber (NBR) outsole using cold atmospheric pressure plasmas (CAPPs) was investigated at short exposure durations of 27–64 s. A 100% of failure at EVA cohesive, after T-peel test of CAPPs-treated EVA/PU adhesive/CAPPs-treated NBR, proves that N2-air CAPPs can efficiently work as a surface modification on EVA and NBR soles, compared with 100% of failure at PU adhesive/NBR interface after T-peel test of bonded as-received EVA/PU adhesive/as-received NBR. This study demonstrates that N2-air CAPPs significantly affect the surface polar properties and the enhanced adhesive strengths of EVA and NBR soles. Hydrophobic surfaces of EVA and NBR with small polar surface free energies (PSFEs) of 2.4 and 1.7 mN/m could be turned into highly polar surfaces as the values of PSFEs are respectively raised to 39.9 and 35.2 mN/m after the surfaces were treated by N2-air CAPPs. Increased compositions of O and N atoms for EVAs and NBRs by N2-air CAPPs have been identified to bond well with PU adhesives. For further insight into the treatment reaction on the surfaces of EVA and NBR using CAPPs, plasma active species of N2-air CAPPs were detected with optical emission spectroscopy. [ABSTRACT FROM AUTHOR]
    • نبذة مختصرة :
      Copyright of Journal of Adhesion Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)