Effects of epoxidised natural rubbers on cure characteristics and crosslink density of silica-filled natural rubber composite

Autor: Indra Surya, Z Alfian
Rok vydání: 2019
Předmět:
Zdroj: Journal of Physics: Conference Series. 1230:012088
ISSN: 1742-6596
1742-6588
DOI: 10.1088/1742-6596/1230/1/012088
Popis: The effect of two grades of epoxidised natural rubbers (ENR 25 and ENR 50), having 25 and 50 mol of epoxidation, on crosslink density and cure characteristics of silica-filled natural rubber (NR) composites were investigated using a semi-efficient vulcanisation system. The ENRs were incorporated separately into the composites at 5.0, 10.0, 15.0, 20.0 and 25.0 parts per hundred rubber (phr). An investigation was carried out to examine the effects of the ENRs on cure characteristics and crosslink density of the silica-filled NR composites. Results revealed that both ENR 25 and ENR 50 functioned as curatives and compatibilizers. They increased the scorch time, cure time, torque difference and crosslink density. The higher the ENRs loadings; the higher were the scorch, cure times, torque difference and crosslink density. At a similar loading, ENR 50 exhibited a more pronounced curative and compatibilization effects than ENR 25.
Databáze: OpenAIRE