Article
  • Effect of 2-Hydroxyethyl Acrylate on Physical Properties of Optically Clear Resin
  • Kim TY, Kang HJ
  • 하이드록시 에틸아크릴레이트가 광접착 수지 물성에 미치는 영향
  • 김태이, 강호종
Abstract
Effect of 2-hydroxyethyl acrylate (2-HEA) on the optical clear resin (OCR) made by solvent free polymerization was studied. It was found that peel strength and holding power increased with increasing of HEA content up to 50% and as a result, the glass transition temperature of adhesive was increased. The enhancement of adhesion properties is due to the increasing hard characteristics of HEA as well as hydrophilicity by OH group in HEA. In addition, HEA caused the increase of refractive index and optical haze. The increase of haze, which caused the optical problem in electronic device, could be controlled by thermal treatment of adhesive.

광소자용 무용제 점착제로 사용되는 2-ethylhexyl acrylate(2-EHA)에 2-hydroxyethyl acrylate(2-HEA) 첨가가 광접착 수지 물성에 미치는 영향을 확인하였다. 2-HEA 첨가에 의하여 유리전이온도가 증가하는 것으로 보아 상대적으로 hard한 2-HEA에 의하여 peel strength와 holding power가 증가함을 확인하였으며 이때 최대 2-HEA 함량은 50%임을 알 수 있었다. 이러한 접착력 증가는 2-HEA의 hard한 물성과 함께 함유된 OH 기능기에 의한 친수성 증가에 기인됨을 알 수 있었다. 아울러 2-HEA 첨가는 굴절률 증가 및 헤이즈 증가와 같은 점착제 광학적 특성 변화를 유발시킨다. 광점착제의 문제점인 헤이즈 증가는 열처리에 의하여 개선될 수 있음을 확인하였다.

Keywords: optically clear resin; acrylate adhesive; 2-hydroxyethyl acrylate peel strength; holding power; optical properties

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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

  • 2017; 41(3): 495-499

    Published online May 25, 2017

  • 10.7317/pk.2017.41.3.495
  • Received on Nov 9, 2016
  • Accepted on Dec 14, 2016