화학공학소재연구정보센터
Applied Chemistry, Vol.4, No.1, 53-56, May, 2000
저온 플라즈마 처리가 EVA 발포체의 접촉각에 미치는 영향
The Effect of Low Temperature Plasma on the Contact Angle of EVA Foam
The surface of injection and pressure-molded sheets of poly(ethylene-co-vinylacetate)(EVA) foams were treated in low temperature plasma to improve adhesion in joints with a water-based polyurethane adhesives. The modifications produced on the rubber surface by plasma treatment were assessed using contact angle measurement, Fourier-transform infrared-attenuated total reflectance spectroscopy(FTIR), scanning electron microscopy(SEM). Adhesion was obtained from T-peel tests of treated EVA foams/polyurethane adhesive joints. Several experimental variables were considered, such as radio frequency power, treating time, type of gas, and gas flow. The treatment in the low temperature plasma producted a noticeable decrease in contact angle. The peel strength of EVA foams treated with plasma was increased with plasma treating time, and gas flow.