Structural adhesive materials

摘要

An adhesive material comprising at least one adhesive polymeric resin, at least one low aspect ratio metal-coated additive, and at least one high aspect ratio metal-coated additive. There is additionally provided an adhesive material comprising at least one adhesive polymeric resin, and one of either; a) low aspect ratio metal-coated additives present in the range 0.2 wt. % to 30 wt. % of the adhesive material; or b) discrete high aspect ratio metal-coated additives present in the range 0.2 wt. % to 25 wt. % of the adhesive material.

主权项

1. An adhesive material that provides electrical conductance across a bondline having a thickness in the range between 50 microns and 400 microns, said adhesive material comprising:
a) an adhesive polymeric resin that is in the form of a bondline between two substrates wherein the thickness of said bondline is in the range between 50 microns and 400 microns and wherein said adhesive polymeric resin has a lap shear strength; and b) low aspect ratio metal-coated additives disbursed in said adhesive polymeric resin; and c) high aspect ratio metal-coated additives disbursed in said adhesive polymeric resin in an amount in the range of 2 weight percent to 15 weight percent so as to provide electrical conductance across said bondline and wherein the weight ratio of said high aspect ratio metal-coated additives to said low aspect ratio metal-coated additives is about 3 to 1, wherein the lap shear strength of said adhesive material is equal to or greater than the lap shear strength of said adhesive polymeric resin.