Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of the Rheological Properties of UV Cured Acrylic Pressure Sensitive Adhesive with Nano-particles on the Silk Screen Printing and Adhesion

실크 스크린 인쇄 및 점착력에 나노 입자가 포함된 UV 경화형 아크릴계 감압 점착제의 유변학적 특성

  • Cho, Min-Jeong (Center for Photofunctional Energy Materials, Dept. of Polymer Science and Engineering, Dankook University) ;
  • Kang, Ho-Jong (Center for Photofunctional Energy Materials, Dept. of Polymer Science and Engineering, Dankook University) ;
  • Kim, Dong-Bok (Center for Photofunctional Energy Materials, Dept. of Polymer Science and Engineering, Dankook University)
  • 조민정 (광에너지소재연구센터, 단국대학교 고분자공학과) ;
  • 강호종 (광에너지소재연구센터, 단국대학교 고분자공학과) ;
  • 김동복 (광에너지소재연구센터, 단국대학교 고분자공학과)
  • Received : 2017.02.17
  • Accepted : 2017.03.08
  • Published : 2017.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

For application to display module junction process, the silk screen printing based on UV curable acrylic pressure sensitive adhesive(PSA) with silica nano-particles and the rheological properties were studied to investigate the effect on printability and adhesion. The monomers for PSA were based on 2-ethylhexyl acrylate(2-EHA) and acrylic acid(AA) 93:7, butyl acylate(BA), 2-hydroxyethyl acrylate(2-HEA) and tetrahydrofurfuryl acrylate(THFA) were added. Additionally, hydrophobic and hydrophilic nano-particles AEROSIL R974 and AEROSIL 200 were added, respectively. When the ratio of nano-particle was used above 4 or 7 phr, G' and ${\eta}^*$ were increased significantly. When the ratio of AEROSIL 200 was used above 7 phr, the penetration property was decreased during the silk screen printing. We found that the adhesion was decreased with increasing the nano-particle content, and it was decreased in the case of the hydrophilic nano-particle AEROSIL 200.

본 연구는 디스플레이 모듈 접합 공정에 적용하기 위해 자외선 경화형 아크릴계 점착제(PSA)에 실리카 나노 입자를 함량별로 첨가하여 실크 스크린 인쇄성 평가를 실시하였고, 유변학적 성질이 인쇄성 및 점착력에 미치는 영향을 고찰하고자 하였다. 점착제(PSA) 중합을 위한 기본 처방으로 2-ethylhexyl acrylate(2-EHA)와 acrylic acid(AA)를 93:7 비율로 고정하고 butyl acylate(BA), 2-hydroxyethyl acrylate(2-HEA)를 첨가하였다. 추가로 나노 입자는 친수성 및 소수성을 가지는 AEROSIL R974 및 AEROSIL 200을 각각 사용하였다. 나노 입자 함량이 4 또는 7 phr 이상 사용함에 따라 G', ${\eta}^*$ 값이 급격히 증가하였으며, 친수성 나노 입자 AEROSIL 200을 7 phr 이상 첨가했을 때에는 스크린 인쇄 시 투과성이 저하되었다. 점착력은 나노 입자 함량이 증가할수록 감소되는 경향을 보였으며, 친수성인 AEROSIL 200의 경우 점착력이 더욱 저하됨을 알 수 있었다.

Keywords

References

  1. Sung, I. K., Park, G. H., Gong, W. S., and Park, S. H., Journal of Adhesion and Interface(Korea), 15, 176, (2014).
  2. Park, E. S., Park, J. W., and Kim, H. J., Polymer Science and Technology(Korea), 23, 48, (2012). https://doi.org/10.1002/pat.1822
  3. Kim, D. B., Polymer(Korea), 40, 1, (2016).
  4. Park, C. H. and Kim, H. J., Polymer Science and Technology(Korea), 26, 314, (2015).
  5. Baek, S. S., Jang, S. J., Lee, J. H., Kho, D. H., Lee, S. H., Hwang, and S. H., Polymer(Korea), 38, 199, (2014).
  6. Baek, S. S., Jang, S. J., Lee, S. W., and Hwang, S. H., Polymer(Korea), 38, 682, (2014).
  7. Piglowski, J. and Kozlowski, M., "Rheological properties of pressure-sensitive adhesives: polyisobutylene/sodium carboxymethylcellulose", in Rheol. Acta, 24, 519, (1985). https://doi.org/10.1007/BF01462499
  8. Keizai, F., "Special Adhesives and Passivation Materials⋅Market Outlook and Application 2012", Fuji Keizai, Tokyo. (2011)
  9. Kim, S. J., "Research on Flexible Thermoelectric Power Generator using Screen Printing Technique", KAIST, Korea. (2012)
  10. Conn, R. and Gosselin, A., "Fumed silica use in pressure sensitive adhesives", Pressure Sensitive Tape Council, 253, (2009).
  11. EVONIK Industries, Technical Information 1324, "AEROSIL(R) Fumed Silica in Water-based Adhesives & Sealants", 1.
  12. Lepek, Daniel and Loo, Christopher, "Agitated Fluidization of Nano-powders Using Mechanical Stirring", The Cooper Union, USA, 1, (2013).
  13. Wang, X. S., Rahman, F., Rhodes, Martin J., "Mechanistic study of nano-particle fluidization", Monash University, Australia, 353, (2007).
  14. EVONIK Industries, Technical Bulletin Fine Particles 11, "Basic characteristics of AEROSIL(R) fumed silica", 10.
  15. Subedi, D. P., "Contact Angle Measurement for The Surface Characterization of Solids", in The Himalayan Physics, vol II, 3, (2011).
  16. Choi, H. S., Hwang, H. Y., Jeoung, S. K., Lee, S. G., Lee, and K. Y., Polymer(Korea), 36, 33, (2011).
  17. Kim, D. B., Polymer(Korea), 37, 192, (2012).
  18. Chang, M.-C., Mao, C.-L., Vargas, and R. R., U.S. Patent 4,564,664, (1986).
  19. Kim, T. Y. and Kang, H. J., "The coating characteristics of high performance optically clear resin", Korea, 23, (2015).

Cited by

  1. 기기 면적 대비 높은 화면 비율을 갖는 터치 패널 디스플레이 제조를 위한 차광 테이프의 개발 vol.7, pp.4, 2017, https://doi.org/10.22156/cs4smb.2017.7.4.075
  2. 삼관능 모노머의 종류 및 함량에 따른 자외선 경화형 감압 점착 필름의 특성 vol.20, pp.1, 2017, https://doi.org/10.17702/jai.2019.20.1.15
  3. Volatile content and VOCs emitted from inks used in the printing industry vol.19, pp.2, 2017, https://doi.org/10.15250/joie.2020.19.2.166
  4. Characteristics of VOCs and carbonyl compounds concentration in indoor air of small scale printing facilities vol.19, pp.3, 2020, https://doi.org/10.15250/joie.2020.19.3.278