NR고무/BR고무 블렌드의 물리적 특성 및 내오존성에 관한 연구

Abstract

Studies on the Physical Properties and Ozone Resistance of NR/BR Rubber Blend

Ki Jung Ryu

Department of Polymer Engineering, The Graduate School, Pukyong National University

Abstract

This study measured the aging and physical properties of NR blends by mechanical mixing type. The measurements were conducted using a moving die rheometer (MDR), universal testing machine (UTM), compression set and dynamic mechanical analyzer (DMA). The properties of aging properties decreased with increasing BR contents. Specially the tensile strength and elongation at break decreased. Also scorch time and optimum cure time increased. Dynamic characteristics determined from a Eplexor(GABO) generally showed single glass transition() for the entire blends, peak monotonically shifted toward the lower temperature with the increasing BR contents.