가황형태 및 온도가 천연고무 컴파운드의 물리적 특성에 미치는 영향 = Effects of Vulcanization Type and Temperature on Physical Properties of Natural Rubber Compounds

다국어 초록 (Multilingual Abstract)

Cure characteristics, tensile properties, and dynamic properties were investigated on the carbon black-filled natural rubber compounds, in which three typical vucanization types: conventional vulcanization(Conv), semi-efficient(Semi-EV), and efficient(EV) vulcanizations were used. The effects of vulcanization temperature on both the mechanical property and aging resistance of rubber compounds were also investigated. The Conv cure system showed a slightly slower rate of vulcanization than those of Semi-EV and EV ones. On the other hand, it showed a higher value in the maximum torque of cure curve. Higher tensile moduli were observed in Conv system than those in Semi-EV and EV ones, while lower elongation at break were obtained in Conv one. The tensile strength at break were found to be about the same for three cure systems. Hardness, modulus, and tensile strength decreased with increasing the vulcanization temperature, and the degree of changes in the properties was found to be smaller for EV and Semi-EV systems than that in Conv one. The EV system was found to be superior m thermal-aging resistance to Conv one.