申请人:ICI AUSTRALIA OPERATIONS PROPRIETARY LIMITED
公开号:EP0458521A2
公开(公告)日:1991-11-27
The present invention relates to an improved heat curable epoxy resin adhesive in which a metal oxide, for example zinc oxide, and a polyhydroxyaryl compound, for example gallic acid, are used in combination with an epoxy resin, for example a heat curable liquid epoxy resin adhesive, to give an adhesive composition having significantly improved binding strength and resistance to weathering.
The epoxy resin adhesive composition of the invention has been found to be particularly advantageous in the bonding of metal surfaces providing higher bond strength over a prolonged period and improved resistance to the deterioration of bond strength in the presence of water or high humidity.
本发明涉及一种改进的热固化环氧树脂粘合剂,在该粘合剂中,金属氧化物(例如氧化锌)和多羟基芳基化合物(例如没食子酸)与环氧树脂(例如热固化液体环氧树脂粘合剂)结合使用,使粘合剂组合物的粘合强度和抗风化性能显著提高。
研究发现,本发明的环氧树脂粘合剂组合物在粘合金属表面时特别有优势,它能在较长时间内提供较高的粘合强度,并能在有水或高湿度的情况下提高抗粘合强度衰减的能力。