A Study on Synthesis and Properties of Acrylic Rubber

아크릴 고무의 합성과 물성에 대한 연구

  • Cho, Ur-Ryong (Department of Appied Chemical Engineering, Korea Institute of Technology and Education) ;
  • Lee, Ki-Mun (Department of Appied Chemical Engineering, Korea Institute of Technology and Education)
  • 조을룡 (한국기술교육대학교 응용화학공학과) ;
  • 이기문 (한국기술교육대학교 응용화학공학과)
  • Published : 2009.09.30

Abstract

The acrylic rubber was synthesized by emulsion polymerization using n-butyl acrylate, n-butyl methacrylate, acrylonitrile, glycidylmethacrylate, and allyl methacrylate. When the contents of acrylonitrile were increased at fixed amount of crosslinking monomers, the Tg of polymers was increased with the contents of acrylonitrile, Mooney viscosity, hardness, and tensile strength also were increased. But the elongation was decreased due to the reduction of chain flexibility. The addition of the monomer for crosslinking, glycidylmethacrylate whose Tg is $56^{\circ}C$ resulted in the increased Tg of the polymer, and increased Mooney viscosity, hardness, and tensile strength, but the elongation at break was decreased with the glycidylmethacrylate contents. It was shown that this phenominon was attributed to the increment of crosslinking density by glycidylmethacrylate through the measurement of rheometer.

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