No abstract

SynopsisA study of the temperature dependence of Mooney scorch time was carried out by using two grades of natural rubber, Heueu Bmsilknsis (SMR L and SMR lo), and on synthetic rubber, styrene-butadiene rubber (SBR), in the temperature range of 100-180°C. Results show that the scorch time for SBR system is greater than that of the other grades of natural rubber. This is attributed to the lower degree of unsaturation in SBR. Effects of 2-mercaptobenzothiazole (MBT) and other types of accelerators on the scorch properties were also investigated and discussed. One black-filled compound was used to study the dependence of carbon black on the scorch property, and data indicate that the effect is more evident for temperature lower than 100°C.

No abstract

No abstract

No abstract