화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.22, No.4, 411-415, August, 2011
Export Citation
Thiuram, Thiazole, Sulfenamide계 가황촉진제가 실리카로 충진된 천연고무 복합소재의 가황 및 물성에 미치는 영향
Effects of Thiuram, Thiazole, and Sulfenamide Accelerators on Silica Filled Natural Rubber Compound upon Vulcanization and Mechanical Properties
최창용, 김성민1, 박영훈, 장미경, 나재운†, 김광제1
  • 순천대학교 공과대학 고분자공학과
  • 1동아타이어공업(주)
Changyong Choi, Seong-Min Kim1, Young-Hoon Park, Mi-Kyeong Jang, Jae-Woon Nah†, and Kwang-Jea Kim1
  • Department of Polymer Science and Engineering, Sunchon National University, Jeonnam 540-742, Korea
  • 1Dong Ah Tire & Rubber Co. Ltd, Gyeongnam 626-110, Korea
E-mail:
초록
본 연구에서는 화학적 구조가 다른 thiuram계 tetramethyl thiuram disulfide (TMTD), dipenta methylene thiuram tertasulfied (DPTT), thiazole계 2-mercapto benzothiazole (MBT), 2,2'-dithiobisbenzothiazole (MBTS), sulfenamide계 n-cyclohexyl benzothiazyl-2-sulfenamide (CBS), n-oxydiethylene benzo-thiazyl-2-sulfenamide (NOBS)를 사용하여 각각의 촉진제가 실리카가 충진된 천연고무의 가황 특성 및 기계적 물성에 미치는 영향을 비교 평가하였다. TMTD는 상대적으로 빠른 가류 속도와 높은 최대 토크값(Tmax), 우수한 기계적 물성을 보였고 MBT, MBTS는 상대적으로 중간 정도의 가황 시간과 Tmax, 기계적 물성을 보였다. 마지막으로 NOBS는 느린 가황 시간과 낮은 기계적 물성을 나타낸 반면 중간 값의 Tmax를 나타냈다.
Various types of accelerators, thiuram (TMTD, DPTT), thiazole (MBT, MBTS), and sulfenamide (CBS, NOBS) are added into a silica filled natural rubber compound. Their effects on vulcanization and mechanical properties are investigated. TMTD showed the fastest vulcanization rate, the higer maximum torque (Tmax), and the excellent mechanical properties (300% modulus, tensilestrength, elongation). MBT and MBTS showed an intermediate vulcanization rate between thiuram and sulfenamide type and added ones, and also showed the lower Tmax and mechanical properties compared to that of other compounds. Finally, NOBS showed the slowest vulcanization rate and the lower mechanical property but the moderate Tmax.
Keywords:accelerators;silica;natural rubber;vulcanization characteristics;physical properties
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