SABRA
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Definition:
Abbreviation for Surface Activation Beneath Reaction Adhesive, a method of bonding plastics such as polyolefins and Teflon which are not normally receptive to adhesives without pretreatment. The method consists of mechanical abrasion of the surfaces to be joined to roughen their outer layers, scission of bonds with creation of free radicals, and further reaction with primers in the liquid, vapor or gaseous phase. An adhesive such as an epoxy is then applied.
Definition Copyright ©1989 CRC Press LLC. All rights
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