Evaluating Strength of Adhesive Interface between Metal and Resin in Resin-Molded Structures

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概要

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• For the stabilization of insulation performance in resin-molded insulators, strong adhesion between the resin and metal is required. In this paper, the influence of surface roughness on the interfacial strength between the resin and metal was investigated. Test pieces were made by covering Cu and SUS cylinders, which had varying for surface roughness, with epoxy resin. The interfacial strength was evaluated with shearing tests on these test pieces. The effective adhesive surfaces of those cylinders were evaluated from surface observation with a laser microscope. The interfacial strength increased with surface roughness. The adhesion-strength index (<I>µ</I>+<I>B</I>), which was proposed in our previous paper, was calculated with the effective adhesive surface and the interfacial strength. The adhesion-strength index gave a constant value with various surface roughnesses for each metal.

• 一般社団法人 日本機械学会の論文

著者

• Iwasaki Tomio

  Hitachi Res. Lab. Hitachi Ltd.

• YAMAZAKI Miki

  Hitachi Research Laboratory, Hitachi, Ltd.

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