PREADHESION SURFACE TREATMENT TECHNOLOGY USING HIGH VACUUM LOW TEMPERATURE PLASMA SPUTTERING

摘要

It can be concluded that HVLTD surface treatment was a preferred preadhesion treatment. The bonded joints exhibited good mechanical properties and durability and thus can be used for structural applications. This treatment presents an alternative for the use of ecology unfriendly chemicals. Its mechanism involves changes in morphology, chemical modification and surface cleaning (indicated by FTIR and XPS) which contribute to a strong and durable adhesive bond. Adhesional strength was improved compared to non-treated adherends and was similar or higher compared to conventional treatments. Changes in failure mode from interfacial to cohesive were due to increased mechanical roughness and uniformity resulting in the interlocking of the adhesive into the treated and roughened adherend's surface. HVLTD proved to be a clean, environmentally friendly, precise, and safe process.