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Effect of Composition of EVA-based Hot-Melt Adhesives on Adhesive Strength  

Lee, Jung-Joon (Department of Polymer Science and Engineering, Inha University)
Song, Yu-Hyun (Department of Polymer Science and Engineering, Inha University)
Lim, Sang-Kyun (Department of Polymer Science and Engineering, Inha University)
Park, Dae-Soon (R&D Center, Kolon Industries Inc.)
Sung, Ick-Kyung (R&D Center, Kolon Industries Inc.)
Chin, In-Joo (Department of Polymer Science and Engineering, Inha University)
Publication Information
Journal of Adhesion and Interface / v.11, no.4, 2010 , pp. 155-161 More about this Journal
Abstract
A series of ethylene vinyl acetate (EVA) based hot melt adhesives containing different types and compositions of tackifier resins were prepared to investigate their rheological behavior and T-peel adhesion strength on polyurethane (PU) elastomeric sheets. C5 aliphatic hydrocarbon resin (C5 resin), C9 aromatic hydrocarbon resin (C9 resin), hydrogenated dicyclopentadiene resin ($H_2$-DCPD resin), and dicyclopentadiene and acrylic monomer copolymer resin (DCPD-acrylic resin) were used as the tackifiers for the hot melt adhesives. To determine the polarity of the tackifiers, their oxygen contents were analyzed, and the DCPDacrylic resin was found to contain an oxygen content higher than the other tackifiers. Only the DCPD-acrylic resin showed complete miscibility with EVA and the homogeneous phase of the hot melt adhesive blends at all compositions. The T-peel adhesion strength between the hot melt adhesives and polyurethane elastomeric sheets was mainly affected by the polarity of the tackifier resins in the hot melt adhesives, rather than by the storage moduli, G', of the hot melt adhesives themselves.
Keywords
hot melt adhesives (HMA); tackifier; hydrocarbon resin; T-peel adhesion strength; oxygen content; rheological property;
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