Invention Grant
US08986578B2 High impact strength conductive adhesives 有权
高冲击强度导电胶

High impact strength conductive adhesives
Abstract:
The high impact strength conductive adhesive is a mixture formed from a bisphenol A-based epoxy resin, a curing agent, and silver flakes. In one embodiment, the bisphenol A-based epoxy resin forms about 10.5 wt % of the mixture and the curing agent forms about 14.5 wt % of the mixture, the balance being silver flakes. In this embodiment, the curing agent is preferably an oligomeric polyamine curing agent, such as amidoamine-polyoxypropylenediamine t-butyl phenol. Each silver flake preferably has a tap density of between about 4.0 g/cm3 and about 5.8 g/cm3, and a surface area of between about 0.8 m2/g and about 0.3 m2/g. In an alternative embodiment, the bisphenol A-based epoxy resin forms about 11.7 wt % of the mixture and the curing agent forms about 16.3 wt % of the mixture, the balance being silver flakes.
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