Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Modification of Asphalt by in-situ Polymerization

내부중합에 의한 아스팔트바인더 개질 연구

  • Lee, Sang-Yum (Road Management Division, Seoul Metropolitan Government) ;
  • Mun, Sung-Ho (School of Construction & Civil Engineering, Seoul National University of Sci & Tech) ;
  • Jin, Jung-Hoon (Dohwa Consulting Engineers Co.) ;
  • Hong, Young-Keun (Department of Polymer Engineering, The University of Suwon)
  • Received : 2011.08.19
  • Accepted : 2011.09.21
  • Published : 2011.09.30
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Abstract

We introduce a novel method that could modify neat asphalt. A polymer-forming monomer, dimethylphenol( DMP) was added to the neat asphalt and polymerization was occurred autonomously, without adding any external catalyst for the polymerization, only with oxygen molecules in the air. The polymer produced in the asphalt was polyphenyleneoxide( PPO) and it enhanced the mechanical properties of the asphalt. Compared with the neat asphalt, the tenacity and toughness of the DMP-modified asphalt were two and half times and three times high, respectively.

새로운 아스팔트 개질 방법을 소개한다. 일반 아스팔트에 플라스틱 고분자의 단량체인 디메틸페놀(DMP)를 혼입하여 아스팔트 내부에서 외부의 반응촉매 투입 없이 공기 중의 산소분자에 의하여 열가소성 고분자인 폴리페닐렌 옥사이드(PPO)가 자율적으로 중합되면서 아스팔트의 소성변형 내구성이 크게 향상된 개질아스팔트를 얻었다. 인장실험에서, 아스팔트 내에서 생성된 PPO에 의해, 기계적 특성에서 가장 중요한 두 가지 요소인 티네시티와 터프네스가 순수 아스팔트보다 각각 두 배 반 그리고 세 배 가량 증가하였다.

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References

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