금속/클로로프렌 고무/플라스틱 접착 시편에서 금속의 표면처리가 접착정도에 미치는 영향

Abstract

To investigate the change of adhesive characteristics by surface modification of metal, peel strength of adhesive samples was measured using an universal testing machine(UTM). The adhesive samples were fabricated by bonding with chloroprene rubber adhesive between various plastic sheets (PE, PP, PS, and PVC) and various surafce modified metal sheets (steel sheet, blasted metal, Al₂O₃plasma coated metal, Al₂O₃/TiO₂plasma coated metal, and ZrO₂/Y₂O₃plasma coated metal). To explain the trend of peel strength, surface roughness, contact angle, and Vickers hardness of various surface modefied metals were measured. With increasing surface roughness and/or decreasing contact angle in various surface modified metals, the peel strength of adhesive sample increased. It was assumed that higher surface roughness and/or lower contact angle increased bonding area of adhesive.