An unusual two step viscosity change was observed during the Mooney scorch test of some dry bonding stocks of a NR/SBR blend. This behavior was found to involve the resin formation and resin crosslinking of rubber. The effects of the resin formers, hexamethylenetetramine as the methylene donor and resorcinol, m-aminophenol or m-phenylenediamine as the acceptor, were analyzed by the application of a prevulcanization inhibitor. The merits of m-phenylenediamine as an adhesion promoter are described.
No takes yet. Share an insight, caveat, or question.
E. Morita (1980) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: