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Cure Characteristics of Carbon Block-Filled Rubber Compounds Composed of NR, SBR, and BR

作者
Sung‐Seen Choi
出处
期刊:Elastomers and Composites 卷期号:35 (3): 215-226 被引量:3
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摘要

고무 조성비가 다른 카본블랙으로 보강된 고무 배합물의 가황 특성을 연구하였다. 한 가지 고무로 이루어진 고무 배합물, 두 가지 고무로 이루어진 고무 배합물, 그리고 세 가지 고무로 이루어진 고무 배합물을 실험 대상으로 삼았다. NR/BR과 SBR/BR 배합물 중에서 BR의 함량이 높은 것의 델타토크는 단일 고무 배합물의 경우보다 높다. 삼중 고무 배합물의 델타 토크의 경우에는 세가지 고무의 함량비가 유사할수록 델타 토크가 낮아졌다. 스코치 시간과 적정 가황 시간은 NR이 증가할수록 빨라졌고 SBR이 증가할수록 느려졌다. 가황 속도는 SBR 함량이 증가할수록 느려졌다. 가교 역전(reversion) 현상은 SBR 함량이 증가할수록 감소하였다. 【Cure characteristics of carbon black-filled rubber compounds with different rubber composition were studied using a rheometer. The carbon black-filled rubber compounds with single, binary, and ternary rubber compositions of natural rubber (NR), styrene-butadiene rubber (SBR), and butadiene rubber (BR) were used. Delta-torques of the NR/BR- and SBR/BR-based compounds with a high BR content were higher than those of the single rubber-based compounds. For ternary rubber-based compounds, the delta-torques of the compounds were lower when the difference in the rubber content ratios was small than when it was big. Scorch and optimum cure times of the rubber compounds became shorter by increasing the content of NR in the compounds while those became longer by increasing the SBR content. Cure rates of the rubber compounds increased with a decrease of the SBR content in the rubber compounds. Reversion ratios decreased with an increase of the SBR content in the rubber compounds.】

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