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6643687 
Journal Article 
Effect of epoxidised natural rubbers on curing characteristics of kaolin-filled natural rubber composites 
Surya, I; Sukeksi, L; Marpongahtun; , 
2019 
IOP PUBLISHING LTD 
BRISTOL 
WOS:000492726800114 
Effects of 2 types of epoxidised natural rubbers (ENR 25, ENR 50), with twenty-five and fifty moles of epoxidation, on crosslinking density and cure characteristics of natural rubber (NR) composites, which were filled by kaolin filler, were investigated using a semi efficient vulcanisation system. The ENRs were added separately into composites at 5.0, 10.0, 15.0, 20.0 and 25.0 parts per hundred rubber. An observation was conducted to investigate the effects of the ENRs on curing and crosslinking density of the kaolin-filled NR composites. Results revealed that both ENR 25 and ENR 50 functioned as curatives and compatibilizers. They decreased both cure and scorch times and minimum torque but increased difference of torque and crosslinking density. The higher ENRs loadings; the lower were the cure time and scorch time, the higher were the torque difference and crosslinking density. At a similar addition, ENR 50 exhibited a more pronounced curative and compatibilization effects than ENR 25. 
Ali, AY; 
1st International Conference on Industrial and Manufacturing Engineering (ICI and ME) 
Medan, INDONESIA