• Effect of Vinylic Monomers on Toughness of Unsaturated Polyester
  • Lee DH, Jung YK, Choi GY, Kim HG, Min KE, Seo KH, Lim JC, Jun IR
  • 불포화 폴리에스테르 수지의 강인성에 비닐계 단량체가 미치는 효과
  • 이동호, 정용균, 최관영, 김호겸, 민경은, 서관호, 임정철, 전일련
Abstract
We investigated the change of mechanical properties of UP using mixture of SM with VAc or MA that have low glass transition temperature when polymerized instead of SM only for diluents of UP. In case of using mixture of SM/MA, it was elucidated that the toughness of UP was more improved than using SM only. But in case of SM/VAc, it was observed that the content of mixture could not affect on toughness. It was concluded that these results are caused by the effect of each diluents mixtures on stress-relaxation due to phase separation and on decrease glass transition temperature of UP is suite different from each other.

불포화 폴리에스테르(unsaturated polyester : UP) 의 희석제로 많이 사용되는 스티렌 단량체(SM) 대신에 단일 중합체의 유리전이온도가 낮은 비닐 아세테이트(VAc), 메틸 아크릴레이트(MA)를 SM과 혼합하여 사용하였을 때 혼합조성에 따른 UP의 기계적 물성 변화를 조사하였다. SM/MA 혼합계는 MA 함량 증가에 따라 전체적으로 강인성의 향상이 나타난 반면, SM/VAc 혼합계의 경우에는 VAc 단량체의 함량 증가에 따른 강인성의 향상을 기대하기가 힘든 것으로 나타났다. 이러한 형상은 전체 계의 유리전이온도의 저하 효과와 상분리에 의한 응력 완화 효과에 미치는 각 단량체의 영향이 서로 다르기 때문인 것으로 해석되었다.

Keywords: Unsaturated Polyester; Reactive Monomer; Toughness; Gelation Time; Copolymerization

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
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This Article

  • 2001; 25(3): 375-384

    Published online May 25, 2001

  • Received on Jan 19, 2001