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含GMA的丙烯酸酯类胶粘剂的自由基-阳离子混杂光固化 被引量：5

Free Radical-Cationic Hybrid UV Curing Process of Acrylate Adhesives Containing Glycidylmethacrylate
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摘要 对含有甲基丙烯酸缩水甘油酯(GMA)的丙烯酸酯类光固化胶粘剂分别进行自由基光固化和自由基/阳离子混杂光固化,利用红外光谱研究了GMA含量和阳离子光引发剂对光固化过程和胶粘剂粘接性能的影响。红外光谱结果表明,GMA的双键聚合速度大于芳香族聚氨酯二丙烯酸酯(6201)和丙烯酸异冰片酯(IBOA),GMA与6201的共聚倾向大于IBOA与6201的共聚倾向。阳离子光引发剂的加入会加大固化体系中的自由基浓度,导致固化体系的凝胶率降低。GMA在与IBOA形成的混合体系中的物质的量分数≤70%时,混杂光固化胶粘剂的剪切强度随着GMA含量的增加而增加。 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 %.
作者 孙龙生 杨继萍 黄鹏程 路明昌
机构地区 北京航空航天大学材料科学与工程学院
出处 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2013年第9期23-27,共5页 Polymer Materials Science & Engineering
关键词 甲基丙烯酸缩水甘油酯 混杂光固化 红外光谱 凝胶率 glycidyl methacrylate hybrid UV curing infrared spectroscopy gel ratio
分类号 TQ433.43 [化学工程]
  • 相关文献

参考文献9

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二级参考文献9

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共引文献12

同被引文献41

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引证文献5

二级引证文献13

高分子材料科学与工程
2013年 第9期

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