Interfacial Structure and Bonding Mechanism of Chromium Coated Steel-EAA Polymer Strip
The study was to clarify the interfacial structure and bonding mechanisms of chromium coated steel-EAA strip for 5G communication optical cable application.The original metal surface was analyzed by contact angle measurement and scanning white light interferometer.The results show that the surface of chromium coated steel is hydrophilic and rough.Electron microscopies were used to characterize the cross sections of the laminated strip.It is found that chromium coated steel and ethylene acrylic acid(EAA)plastic film are tightly bonded through metal oxide layer with the formation of microscale mechanical interlocking.In addition,the fractured surface of chromium coated steel after peeling test was analyzed by scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).Further analyses show that the chromium oxide layer is chemically bonded to the carbonyl group in EAA in the form of C-O-Cr.In summary,the microscale mechanical interlocking and chemical bonding are important interfacial bonding mechanisms of chromium coated steel-EAA polymer strip.
NETL
NSTL
万方数据
