공업화학 (Applied Chemistry for Engineering)

  • 제27권3호
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  • Pages.259-264
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  • 2016
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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Norbornene Dialkyl Ester가 첨가된 Isoprene Rubber의 가공성 및 물성에 관한 연구

A Study on Processing and Physical Properties of Isoprene Rubber Involving Norbornene Dialkyl Ester

  • 정혜인 (상명대학교 화공신소재학과) ;
  • 조남철 (상명대학교 화공신소재학과) ;
  • 우제완 (상명대학교 화공신소재학과)
  • Jeong, Hye-in (Department of Chemical Engineering and Materials Science, Sangmyung University) ;
  • Jo, Nam-chol (Department of Chemical Engineering and Materials Science, Sangmyung University) ;
  • Woo, Je-Wan (Department of Chemical Engineering and Materials Science, Sangmyung University)
  • 투고 : 2016.03.03
  • 심사 : 2016.04.08
  • 발행 : 2016.06.10
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초록

본 연구에서는 norbonene dialkyl ester 6종을 isoprene rubber에 적용하여 내분비계 교란물질인 DEHP에 대한 대체 가능성을 평가하였다. IR 시편은 isoprene rubber (IR)와 norbonene dialkyl ester, 가황제 등을 배합하여 제작하였으며, 토크값, 스코치 시간, 최적가황시간, 무니점도를 측정하여 가공성을 평가하였고, 경도, 인장강도, 100% modulus, 신율 등물성을 평가하여 이를 DEHP를 적용한 경우와 비교하였다. 그 결과 토크 값의 경우 최저토크, 최대토크 모두 DEHP 보다 낮거나 유사한 값을 나타내었고, 스코치 시간, 최적가황시간은 DEHP보다 같거나 길게 측정되었다. 무니점도는 DEHN이 낮은 값을 나타내어 DEHP를 첨가한 경우보다 가공성이 우수함을 확인하였다. 경도와 열적 특성의 경우 norbornene계 화합물이 DEHP와 같거나 유사한 경향을 보였다. 인장특성의 경우 선형의 알킬기를 가진 norbornene계 화합물을 적용한 경우가 우수함을 확인하였다.

In this study, we applied six different norbornene dialkyl esters as a plasticizer to an isoprene rubber (IR) and evaluated replaceability of DEHP which is an endocrine disruptor. IR test sheets were prepared by blending IR, norbornene dialkyl ester, vulcanizing agent, etc. and processing properties of the IR were evaluated by measuring Toque, scorch time, cure time and mooney viscosity. Mechanical properties of IR test sheet including hardness, tensile strength, 100% modulus and elongation were also measured and the physical properties of norbornene dialkyl ester applied as a plasticizer were compared to those using DEHN. Both the maximum and minimum toque for the norbornene dialkyl ester as a plasticizer were similar to those of using DEHP. In addition, the scorch and cure time of the former were slightly longer than those of the latter. The mooney viscosity for the case of DEHN was slightly lower than that of the latter. DEHN was also superior to DEHP in terms of processing. The hardness and thermal properties of all IR test sheets were measured to be similar to each other. The linear alkyl chain of norbornene compounds also exhibited good tensile characteristics.

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