Article
  • Rheological Properties of ABS-Carbon Black Composite
  • Moon TJ, Oh TS
  • ABS-카본블랙 복합재의 유성학적 성질
  • 문탁진, 오택수
Abstract
The properties of ABS(Acrylonitrile-Butadiene-Styrene) and conductive carbon black composite have been studied based on yield stress. The apparent viscosity of ABS-carbon black cmposite was found to be increased with increasing carbon black content and with decreasing temperature. The Power Law index was decreased with increasing temperature. The apparent viscosity of the composite was affected by the structure of carbon black. The value of apparent viscosity has been fund to be higher in the developed filler structure. The activation energy at the constant shear rate was found to be decreased with increasing shear rate. The die swell ratio was not affected by the various medium, however, the die swell ratio was decreased with increasing caron lack content of the composite. The yield stress which was calculated by Casson''s equation was decreased with increasing temperature. The yield stress was decreased with decreasing carbon black content of the composite. The yield stress of the composite was observed when the cross head speed was 0.1 to 0.15 cm/min, however, the yield stress was not affected by changing the capillary of the rheometer.

본 연구에서 ABS(acrylonitrile-butadiene-styrene)에 전도성 카본블랙을 충진시킨 전도성고분자복합재료의 여러 가지 제 성질들을 항복응력을 중심으로 고찰하였다. ABS-카본블랙 복합재의 겉보기 점성도는 카본블랙의 양이 증가함에 따라 증가하였으며, 온도가 상승함에 따라 감소하였다. 또한 power law 지수는 온도가 증가함에 따라 감소하였다. 그리고, 복합재의 겉보기 점성도는 카본블랙의 구조에 큰 영향을 받으며, 구조가 발달되어 있을수록 높은 값을 나타내고 있었다. 또한 일정한 shear rate하에서의 활성화에너지는 shear rate가 증가함에 따라 감소하였다. Die swell ratio는 사용되는 용액의 종류에 관계가 없었으며, 카본블랙의 양이 증가함에 따라 감소하였다. Casson의 식에 의한 항복응력은 최소자승법으로 계산하였으며, 온도가 상승함에 따라 감소하였다. Casson의 식에 의한 항복응력은 최소자승법으로 계산하였으며, 온도가 상승함에 따라 감소하였고, 카본블랙의 함량이 증가함에 따라 증가하였다. 특히 항복응력은 사용된 rheometer의 capillary에 무관하며, 오직 plunger의 cross head speed에만 영향을 받았으며, 0.1-0.15㎝/min의 범위에서 항복응력이 나타남을 알았다.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1989; 13(4): 325-331

    Published online May 25, 1989