Article
  • Effect of Chemical Structure of Crosslinking Agent on Adhesion Properties of UV Cured 2-EHA/n-BA PSA
  • Kim HG
  • 경화제의 화학적 구조에 따른 UV 경화형 2-EHA/n-BA 점착제의 접착특성
  • 김호겸
Abstract
Pressure sensitive adhesives (PSAs) based with 2-ethylhexyl acrylate (2-EHA), n-butyl acrylate (n-BA) and different crosslinking agents were prepared by UV radiation curing. The effect of chemical structure and amounts of crosslinking agent, and also mixing ratio of co-monomer on adhesion properties of PSAs were presented. The results showed that the improvement of tack and peel strength of PSAs with 0.1 wt% of crosslinking agent was observed without cohesive failure and decreased with a higher concentration of crosslinking agent. A more increase in adhesion properties for PSAs with poly(ethylene glycol)dimethacrylate (PEGDMA) and diethylene glycol dimethacrylate (DEGDMA) was also investigated, which may be due to sustaining the chain flexibility by longer ethylene oxide chain and bulky methyl group in molecular backbone of crosslinking agent during the crosslinking process. It can be also found that the effect of repeating unit chain length on the adhesion properties between DEGDMA and PEGDMA system was insignificant in spite of their similar chemical structure.

2-Ethylhexyl acrylate(2-EHA)와 n-butyl acrylate(n-BA)를 공단량체로 하는 UV 경화형 아크릴 점착제를 제조하고 이 때 두 단량체의 함량비와 경화제의 화학적 구조 및 농도가 최종 접착물성에 미치는 영향을 조사하였다. 경화제 농도가 0.1 wt%일 때 높은 초기접착력과 박리강도를 갖는 것으로 확인되었으며 이 후 농도가 증가할수록 접착물성이 감소하였다. 또한 diethylene glycol dimethacrylate(DEGDMA)와 poly(ethylene glycol)dimethacrylate (PEGDMA)와 같이 분자 내 부피가 큰 메틸기와 상대적으로 긴 에틸렌옥사이드 사슬을 가진 경화제가 첨가되었을때 경화 후에도 점착제의 사슬 유연성이 유지되어 높은 경화제 농도에서 기존의 1,6-hexanediol diacrylate(HDDA)를 첨가한 계에 비해 다소 높은 점착물성을 갖는 것으로 나타났다. 또한 유사한 분자 구조를 가졌으나 분자 내 반복단위의 길이가 다른 DEGDMA와 PEGDMA간의 접착물성의 차이는 미미한 것으로 확인되었다.

Keywords: pressure sensitive adhesive; adhesion properties; acrylic copolymer; UV radiation curing; crosslinking agent

  • 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

  • 2015; 39(5): 714-720

    Published online Sep 25, 2015

  • 10.7317/pk.2015.39.5.714
  • Received on Jan 27, 2015
  • Revised on Nov 30, -0001
  • Accepted on Apr 23, 2015

Correspondence to

  • E-mail: