Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Preparation and Properties of Coating Materials of Polydimethylsiloxane with Acrylate Groups

Acrylate기를 갖는 Polydimethylsiloxane계 코팅 액의 제조와 그 특성

  • Bak, Seung Woo (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University) ;
  • Kang, Ho Jong (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University) ;
  • Kang, Doo Whan (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University)
  • 박승우 (단국대학교 공과대학 고분자시스템공학과, 광 에너지 소재 연구센터) ;
  • 강호종 (단국대학교 공과대학 고분자시스템공학과, 광 에너지 소재 연구센터) ;
  • 강두환 (단국대학교 공과대학 고분자시스템공학과, 광 에너지 소재 연구센터)
  • Received : 2013.08.12
  • Accepted : 2013.11.01
  • Published : 2014.03.25
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Abstract

${\alpha},{\omega}$-Hydroxypropyl polydimethylsiloxane (HO-PDMS) was prepared by hydrosilylation of hydrogen terminated polydimethylsiloxane with allyl alcohol. Polydimethylsiloxane modified urethane with isocyanate group (PSU) was prepared from cyclic trimer of hexamethylenediisocyanate with HO-PDMS. PDMS modified urethane base resin with acrylic group (PSUA) was prepared from the urethane reaction of PSU with isocyanate group and 2-hydroxyethylmethacrylate. Their structures were characterized using FTIR and NMR. Coating materials were prepared by mixing PSUA, acrylic hardner, photo-initiator, and solvent and coated on PET film to obtain flexible and hard coating film by UV irradiation. Transparency of coating film was 89.7%, contact angle, $88^{\circ}$, and pencil hardness, 3H.

${\alpha},{\omega}$-Hydroxypropyl기를 갖는 polydimethylsiloxane을 합성하고 이를 hexamethylenediisocyanate(HDI)의 고리화 반응으로 제조된 HDI trimer와 반응시켜 말단에 이소시아네이트 기를 갖는 PDMS 변성 urethane(PSU)을 제조하였다. 이소시아네이트기를 갖는 PSU와 2-hydroxyethylmethacrylate를 urethane 반응으로 acrylate기를 갖는 PDMS 변성 urethane base 수지(PSUA)를 제조하였으며, 이를 FTIR, NMR로 구조를 확인하여 분석하였다. 제조한 base 수지에 아크릴계 경화제, 광 개시제, 용매들을 혼합하여 코팅 액을 제조하였으며 이를 PET 필름에 도포하고 자외선으로 조사하여 고경도의 유연성을 갖는 코팅 막을 얻었다. 얻어진 코팅 막의 광 투과도는 89.7%, 연필경도는 3H, 접촉각은 $88^{\circ}$였다.

Keywords

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