The cross-linking of acrylic rubber in the presence of group IIB metal oxides

✍ Scribed by P. Chowdhury; M. C. Chakravorti; C. K. Das

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 429 KB
• Volume: 52
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1994.070520908

✦ Synopsis

Effects

of group IIB metal oxides (viz., ZnO, CdO, and HgO) on ethylene thiourea (ETU) accelerated the curing of acrylic rubber (ACM) have been evaluated with a view to elucidate the cross-linking mechanism with special reference to the role of metal oxides. Best results are obtained with CdO in the presence of ETU. ZnO -CdO or CdO -HgO blends provide no synergism in the state and rate of cure. Formation of metal sulfide and chloride during the cross-linking reaction has been confirmed by XRD and XPS. Examination of FTIR spectra reveals that cross-linking occurs at the C-C1 cure site of the acrylic polymer. Based on spectral and chemical analysis, a reaction mechanism has been put forward.