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Crosslinking Characteristics of Ethylene Vinyl Acetate Copolymer by the Structure of Crosslinking Agents  

Lee, Jong-Rok (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University)
Choi, Chang-Suk (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University)
Kang, Ho-Jong (Center for Photofunctional Energy Materials, Department of Polymer Science and Engineering, Dankook University)
Publication Information
Polymer(Korea) / v.33, no.2, 2009 , pp. 131-136 More about this Journal
Abstract
The effect of the chemical structure of the peroxide crosslinking agent on the reactive crosslinking reaction of EVA was investigated and the physical properties of the crosslinked EVA were studied as well. It was found that peroxide with one peroxy group (perbutyl peroxide) is more effective than peroxides with two peroxy group (2,5 dimethyl 2,5 di(tert-butylperoxyl) hexane and 1,1-di(tert-buthylperoxy)-3,3,5-tri-methylcyclohexane) in melt reactive crosslinking reaction of EVA. The rate of crosslinking was increased by the use of crosslinking acceleration agent but the noticeable effect on degree of crosslinking was not found. Crosslinking caused the lowering of melt flow ability of EVA but mechanical properties were enhanced by the crosslinking of EVA.
Keywords
ethylene vinyl acetate copolymer; reactive processing; crosslinking; peroxide;
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