Cure Characteristics and Hardness of Recycled Latex Catheter (LCr) Filled with Standard Malaysia Rubber (SMR L) Compounds

摘要

The effect of cure characteristics and hardness of LCr filled SMR L compound were investigated. The size of LCr were 20 - 25 mm in range. Six compounds; 0, 5, 15, 25, 35 and 50 per hundred rubber (phr) of LCr were prepared by using two roll mill at room temperature. Cure characteristics such as scorch time,t_2, cure time,t_(90, minimum torque, M_L, maximum torque, M_H, and cure rate index (CRI), and hardness of LCr filled SMR L were examined using rheometer. Result indicated that, all results for t_2, t_(90), M_L and M_H shows the decrease with increasing in filler loading. CRI shows the increasing value with increasing LCr loading. Hardness, H_a value increase slightly with increasing LCr loading.