Surface characterization of vulcanized SBR rubber treated with sulfuric acid;incidence on adhesion on polyurethane adhesive

摘要

Modifications produced on a vulcanized styrene-butadiene rubber surface by treatment with sulfuric acid were assessed using contact angle measurements,IR-ATR spectroscopy and Scanning Electron Microscopy.Adhesion was obtained from T-peel tests of surface-treated R1 rubber/polyurethane adhesive joints.The incidence of several experimental variables were considered on the effectiveness of the treatment,such as length of treatment (immersion time),reaction time,neutralization with and without ammonium hydroxide,and concentration of sulfuric acid.