Article
  • The preparation and Characteristics of High Solids Acrylic/Polyisocyanate Coatings
  • Kim DW, Hwang KH, Jung CH, Wu JP, Park HS
  • 하이솔리드 아크릴/폴리이소시아네이트 도료의 제조화 도막 특성
  • 김대원, 황규현, 정충호, 우종표, 박홍수
Abstract
New high solid acrylic resins(BMHA) containing 70% of solids content have been synthesized. The environmental friendly high solid coatings(BNHS) were prepared by using these acrylic resins and polyisocyanates. The BMHA was obtained by introducing a new functional group, acetoacetoxyethyl methacrylate(AAEM), in the copolymerization of n-butyl acrylate, methyl methacrylate, and 2-hydroxyethyl acrylate. Lowing Tg and increasing the AAEM amount in the BMHA resulted in a high value of conversion. There was no difference in conversion with the variations of OH values. In the next step, high solid BNHS coating were prepared by the curing reaction between BMHA and polyisocyanate at room temperature. The properties of these coatings were evaluated especially for the application of automotive top-coating materials. The introduction of AAEM in the CNHS enhanced the abrasion resistance and solvent resistance of the coatings, which indicated the possible use of BNHS coatings for top-coating materials of automobile.

본 연구는 고형분 70%인 하이솔리드 아크릴 수지(BMHA)를 합성하여, 환경친화성 도료인 하이솔리드 아크릴/폴리이소시아네이트 도료(BNHS)에 적용하고 그의 도막특성을 살펴본 것에 그 의의가 있다. BMHA는 새로운 형의 단량체로서 acetoacetoxyethyl methacrylate(AAEM)을 도입하고 여기에 n-butyl acrylate, methyl methacrylate 및 2-hydroxyethyl acrylate를 4원공중합시켜 얻었다. BMHA 합성에 있어서 Tg값 고정하의 OH 값 변화에 따른 전환율은 큰 차이가 없었다. BMHA와 폴리이소시아네이트를 상온경화시켜 하이솔리드 BNHS도료를 제조하고서 자동차 상도용 도료로서의 적합성 여부를 알아보기 위하여 도막물성 시험을 한 결과, BNHS내에 AAEM 도입 전호의 도막물성 비교시험에서 AAEM 도입후에 내마모성과 내용제성이 향상됨으로써 자동차 상도용 도료로서의 응용가능성을 보여주었다.

Keywords: high solids; acrylic/polyisocyanate coatings; top-coating

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2000; 24(4): 520-528

    Published online Jul 25, 2000