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폴리케톤과 고무의 접착성에 미치는 산처리의 영향

The Effect of Acid Treatment on the Adhesion Property of Polyketone with Rubber

  • 최혜영 (충남대학교 유기소재 섬유 시스템 공학과) ;
  • 이태상 (충남대학교 유기소재 섬유 시스템 공학과) ;
  • 이종 (효성상용화연구소) ;
  • 이승구 (충남대학교 유기소재 섬유 시스템 공학과)
  • Choi, Hae Young (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Lee, Tae Sang (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Lee, Jong (The Technology Commercialization Center, Hyosung Corp.) ;
  • Lee, Seung Goo (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
  • 투고 : 2011.02.07
  • 심사 : 2011.03.02
  • 발행 : 2011.03.30

초록

폴리케톤 필름의 산처리 조건에 따른 필름 표면의 화학적인 변화를 접촉각과 XPS를 이용하여 분석하고, 모폴로지의 변화를 SEM과 AFM을 통하여 살펴보고, 최종적으로 이러한 변화가 폴리케톤 필름과 고무와의 계면접착력에 어떠한 영향을 미치는지를 살펴보았다. 인산처리에 의하여 폴리케톤 필름의 표면에 젖음성이 증가하여 인산의 농도 및 처리시간에 따라서 접촉각이 감소하였으며, 표면에 산소함유기들이 증가하는 결과를 보였다. 인산농도와 처리시간이 증가함에 따라 표면에 crack과 etching이 증가하여 표면거칠기가 증가하였으나, 산처리 조건이 강화되면서 폴리케톤 필름의 표면에 degradation이 발생하여 roughness가 감소하는 결과를 보였다. 폴리케톤과 고무와의 계면접착력을 살펴본 결과, pH 0.74에서 120 min, pH 0.4에서 60 min 처리한 경우에 최대 계면접착력을 보였으며, 산처리 조건이 그 이상으로 증가하면서 degradation이 발생하면서 계면접착력이 감소하였다.

Phosphoric acid treatments were conducted to improve the adhesion property of polyketone film to rubber. The effects of phosphoric acid treatments were characterized by using a contact angle analyzer and a XPS (X-ray photoelectron spectroscopy). Morphological changes were observed by using a scanning electron microscope (SEM) and an atomic force microscope (AFM) as the acid treatment condition varied in concentration and time. The contact angle was found to significantly decrease with the acid treatment. According to the XPS, increased wettability was attributed to the inclusion of oxygen containing groups such as hydroxyl, carbonyl and carboxyl by acid treatments. Cracks and pores were produced on the polyketone film surface and thus, roughness increased with the acid treatment. Interfacial adhesion strength between polyketone and natural rubber was largely improved by acid treatment due to the increased wettability and roughness of the polyketone surface. However, the higher level of acid treatment caused the degradation of the polyketone surface, and thus, its interfacial adhesion consequently decreased.

키워드

참고문헌

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