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ONE-PART STRUCTURAL EPOXY RESIN ADHESIVES CONTAINING ELASTOMERIC TOUGHENERS CAPPED WITH PHENOLS AND HYDROXY-TERMINATED ACRYLATES OR HYDROXY-TERMINATED METHACRYLATES
ONE-PART STRUCTURAL EPOXY RESIN ADHESIVES CONTAINING ELASTOMERIC TOUGHENERS CAPPED WITH PHENOLS AND HYDROXY-TERMINATED ACRYLATES OR HYDROXY-TERMINATED METHACRYLATES
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机译:含酚类和羟基封端的丙烯酸酯或羟基封端的甲基丙烯酸酯的弹性增韧剂的单结构环氧树脂粘合剂
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摘要
Structural adhesives are prepared from an elastomeric toughener that contains urethane and/or urea groups, and have some terminal isocyanate groups that are capped with a phenol and other terminal isocyanate groups that are capped with a hydroxy-functional acrylate or a hydroxy-functional methacrylate. In certain embodiments, the presence of both types of capping on the toughener leads to higher impact peel strengths and a greater level of cohesive failure, than when the toughener is capped with a phenol an hydroxy-functional acrylate or hydroxy-functional methacrylate alone.
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