Effect of curatives and antidegradants on flow properties of uncured rubber compounds

Summary Using new processability testing techniques, the effects of curatives and antidegradants on flow properties of uncured rubber compounds have been studied. Results obtained show that a change of the cure system or the antidegradant type can affect the viscosity curve and the extrudate swell behaviour of NR and SBR compounds.CBS N-cyclohexyl-2-benzothiazole sulphenamide - DTDM 4,4-Dithiodimorpholine - TMTD Tetramethylthiuram disulphide - 6PPD N-Phenyl-N(1,3-dimethylbutyl)-p-phenylenediamine - TMQ 1,2-Dihydro-2,2,4-trimethylquinoline, polymerized - PBN Phenyl--naphthylamine - phr part per hundred rubber Paper presented at the VIIIth International Congress on Rheology, Naples, Sept. 1–5, 1980.With 7 figures and 2 tables