다중벽 탄소나노튜브를 함유한 PC/ABS 복합재의 마모 특성및 다중벽 탄소나노튜브의 유출 평가
Evaluation of MWCNT Exposure and the Wear Characteristics of MWCNT-containing PC/ABS Composites
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Carbon nanotubes (CNTs) are used in various composite materials to enhance electrical, thermal andmechanical properties of composite materials. In this study, we investigate the wear characteristics of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends containing multi-walled carbon nanotubes (MWCNTs). PC/ABS blends arecommonly used in many industrial applications such as cellular phones and display cases and MWCNTs have beenadded to the PC/ABS blends to improve their electromagnetic interference shielding (EMS). We performed wear testson PC/ABS blends containing MWCNTs under reciprocating linear sliding conditions with chrome steel balls as a counterpartmaterial. The normal loads were 10, 30, 50, 70, 100 N, the sliding speed was 10 mm/s, the stroke length was15 mm, and the tests lasted 900 s. The MWCNTs included in the PC/ABS blends lower the wear volume and frictioncoefficient of the composites. We analyzed the wear debris collected from the composites during the tests in terms ofthe MWCNT concentration using inductively coupled plasma optical emission spectroscopy. The results show that thequantity of MWCNTs in the debris is proportional to the concentration of MWCNTs in the composite, indicating thatthe exposure of the MWCNTs to environments by wear could be increased with their concentration in the composite.
Abstract
Carbon nanotubes (CNTs) are used in various composite materials to enhance electrical, thermal andmechanical properties of composite materials. In this study, we investigate the wear characteristics of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends containing multi-walled carbon nanotubes (MWCNTs). PC/ABS blends arecommonly used in many industrial applications such as cellular phones and display cases and MWCNTs have beenadded to the PC/ABS blends to improve their electromagnetic interference shielding (EMS). We performed wear testson PC/ABS blends containing MWCNTs under reciprocating linear sliding conditions with chrome steel balls as a counterpartmaterial. The normal loads were 10, 30, 50, 70, 100 N, the sliding speed was 10 mm/s, the stroke length was15 mm, and the tests lasted 900 s. The MWCNTs included in the PC/ABS blends lower the wear volume and frictioncoefficient of the composites. We analyzed the wear debris collected from the composites during the tests in terms ofthe MWCNT concentration using inductively coupled plasma optical emission spectroscopy. The results show that thequantity of MWCNTs in the debris is proportional to the concentration of MWCNTs in the composite, indicating thatthe exposure of the MWCNTs to environments by wear could be increased with their concentration in the composite.
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