Filler-Elastomer Interactions. 1. Roles of Modified Carbon Black Surfaces to Enhance Mechanical Properties of Carbon Black/Rubber Vulcanizates

충전재-탄성체 상호작용. 1. 표면처리된 카본블랙이 카본블랙/고무 복합재료의 기계적 물성에 미치는 영향

  • Kim, Jeong-Soon (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Nah, Chang-Woon (Department of Polymer Science & Engineering, Chonbuk National University) ;
  • Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • 김정순 (한국화학연구소 화학소재연구부) ;
  • 나창운 (전북대학교 고분자공학과) ;
  • 박수진 (한국화학연구소 화학소재연구부)
  • Published : 2000.06.30

Abstract

Using FT-IR and contact angle measurements it is observed that the chemical surface treatments on virgin carbon blacks lead to a change of the surface properties, including surface functionality and surface free energy It is found that the developments of surface functional groups on acidically and basically treated (ACB and BCB in this study, respectively) carbon blacks are largely correlated with the specific component of surface free energy of the carbon blacks. However, a significant advantage of compounding composites is gained by BCB or NCB (nonpolar chemical treatment) specimens, resulting in improving the hardness, elongation at break, and tensile strength. Particularly, it is seen that the tensile strength of the composites are greatly depended on the London dispersive component of surface free energy determined from the contact angle measurements. It is then concluded that the London dispersion component of carbon blacks plays an important role in an organic rubbers-based compounding composite system.