화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.24, No.4, 499-504, July, 2000
Export Citation
양극산화된 탄소섬유가 복합재료의 계면결합력에 미치는 영향
Effect of Anodized Carbon Fiber Surfaces on Interfacial Adhesion of Carbon Fiber-reinforced Composites
박수진†, 김문한, 최선웅1, 이재락
  • 한국화학연구원 화학소재연구부
  • 1한남대학교 고분자공학과
Soo-Jin Park†, Mun-Han Kim, Sunwoong Choi1, and Jae-Rock Lee
  • Advanced Materials Division, Korea Research Institute of Chemical Technology, P.O. Box 107, Yusong, Daejon 305-600, Korea
  • 1Department of Polymer Science & Engineering, Hannam University, Daeduk, Daejon 306-791, Korea
E-mail:
초록
고강도 PAN계 탄소섬유를 양극산화하여 섬유의 표면 관능기와 표면 자유에너지, 그리고 최종복합재료의 기계적 특성 향상에 미치는 영향을 고찰하였다. FT-IR과 XPS측정 결과, 양극산화에 의해 형성된 섬유 표면의 산소 관능기는 섬유의 표면 에너지와 복합재료의 층간 전단강도(ILSS)에 큰 영향을 주는 것으로 나타났다. 그리고 젖음액의 wicking rate에 근거한 접촉각 측정에서 탄소섬유의 양극산화는 표면 자유에너지의 극성 요소를 크게 증가시키며, 이것은 표면 에너지 관점에서 살펴볼 때 좋은 젖음성이 최종 복합재료의 섬유와 에폭시 수지 매트릭스사이의 계면결합력 향상에 중
The effect of anodic oxidation on high strength PAN-based carbon fibers has been studied in terms of surface functionality and surface energetics of the fiber surfaces, resulting in improving the mechanical properties of composites. According to FT-IR and XPS measurements, it reveals that the oxygen functional groups on fiber surfaces induced by an anodic oxidation largely influence the surface energetics of fibers or the mechanical interfacial properties of composites, such as the interlaminar shear strength (ILSS) of composites. According to the contact angle measurements based on the wicking rate of a test liquid, it is observed that anodic oxidation does lead to an increase in surface free energy of the carbon fibers, mainly due to the increase of its specific(or polar) component. From the surface energetic point of view, it is found that good wetting plays an important role in improving the degree of adhesion at interfaces between fiber and epoxy resin matrix of the resulting composites. Also, a direst linear relationship is shown between O1s/C1s ratio and ILSS or between specific component and ILSS of the composites for this system.
Keywords:carbon fibers;wicking method;surface free energy;XPS;ILSS
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