Abstract
Acrylate adhesives containing glycidylmethacrylate (GMA) were cured via free radical cure or free radical/cationic hybrid cure respectively. The influence of the content of GMA and cationic UV-curing initiator in UV curing process and the resulting adhesive properties were studied by means of infrared (IR) spectroscopy. It is show that double bonds in GMA react faster than aromatic polyurethane diacrylate (6201) and isobornyl acrylate (IBOA), and GMA tends to copolymerize with 6201 more likely than IBOA with 6201. As a result of cationic UV-initiation reaction, the radical concentration increases, leading to decreased gel ratio in cured products. Lap-shear strength of hybrid UV curing adhesives improves with the addition of GMA when molar fraction of GMA in the mixture of IBOA and GMA) is not more than 70%.
| Original language | English |
|---|---|
| Pages (from-to) | 23-27 |
| Number of pages | 5 |
| Journal | Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering |
| Volume | 29 |
| Issue number | 9 |
| State | Published - Sep 2013 |
Keywords
- Gel ratio
- Glycidyl methacrylate
- Hybrid UV curing
- Infrared spectroscopy
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