• Title/Summary/Keyword: Water absorbption

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Effects of Tri-functional Monomers on the Properties of UV-curable Pressure Sensitive Adhesives (PSAs) (삼관능 모노머의 종류 및 함량에 따른 자외선 경화형 감압 점착 필름의 특성)

  • Won, Jong-Woo;Kim, Ju-Yeol;Jang, Ki-Deog;Park, Myung-Chul;Chun, Jae Hwan;Kwon, Oh Hyeong;Hwang, Jin-Sang
    • Journal of Adhesion and Interface
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    • v.20 no.1
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    • pp.15-22
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    • 2019
  • In this study, polybutadiene based di-functional urethane acrylate oligomer (PB-UAO) were synthesized from polybutadiene diol and isophorone diisocyanate. And then, pressure sensitive adhesive films were prepared by mixing with synthesized oligomer, tri-functional acrylate monomer (Tris(2-acryloyloxyethyl) isocyanurate (TAOEIC) or Trimethylolpropane triacrylate (TMPTA) or Pentaerythritol triacrylate (PETA)), mono-functional acrylate monomer (Stearyl acrylate) and UV initiators. Effects of types and contents of trifunctional acrylate monomers on peel strength, tensile strength, elongation, thermal stability and water absorption property were studied. As the contents of tri-functional acrylate monomer increased, and as the molecular weight of tri-functional acrylate monomer decreased, peel strength, elongation and water absorption showed a tendency to decrease whereas tensile strength and thermal stability showed a tendency to increase.