• Title/Summary/Keyword: 폴리에틸렌필름

Search Result 159, Processing Time 0.027 seconds

Ultrahigh Molecular Weight Polyethylene Hybrid Films with Functionalized-MWNT: Thermomechanical Properties, Morphology, Gas Permeability, and Optical Transparency (기능화된 탄소나노튜브를 이용한 초고분자량 폴리에틸렌 복합체 필름: 열적 기계적 성질, 모폴로지, 전기적 성질 및 기체 투과도)

  • Ko, Jeong-Ho;Kim, Jeong-Cheol;Chang, Jin-Hae
    • Polymer(Korea)
    • /
    • v.33 no.2
    • /
    • pp.97-103
    • /
    • 2009
  • Ultra-high molecular weight polyethylene (UHMWPE)/functionalized-MWNT hybrid films were prepared by the solution intercalation method, using 4-cumylphenol-MWNT (CP-MWNT) as the functionalized-MWNT. The variation of the thermomechanical properties, morphology, gas permeability, and optical transparency of the hybrid films with CP-MWNT content in the range of 0$\sim$2.00 wt% were examined. The newly synthesized UHMWPE/functionalized-MWNT hybrid films were characterized by using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and a universal tensile machine (UTM). It was found that the addition of only a small amount of functionalized-MWNT was sufficient to improve the thermomechanical properties of the UHMWPE hybrid films, with maximum enhancement being observed in the CP-MWNT loading in the range 0.50 to 1.00 wt%. The maximum enhancement in the oxygen gas barrier was also found at the functionalized MWNT content of 1.00 wt%. In this work, the thermomechanical properties and gas permeability of the hybrid films were found to be better than those of pure UHMWPE.

Effect of Inorganic Fillers on the Dimensional Stability of Poly(ethylene naphthalate) Film as a Flexible Substrate (무기 필러가 유연기판용 폴리에틸렌나프탈레이트 필름 치수안정성에 미치는 영향)

  • Kim, Jongwha;Kim, Hongsuk;Kang, Ho-Jong
    • Polymer(Korea)
    • /
    • v.36 no.6
    • /
    • pp.733-738
    • /
    • 2012
  • The effect of glass bead and glass fiber on the enhancement of dimensional stability in poly(ethylene naphthalate) (PEN) flexible substrate for photovoltaic devices has been studied. It was found that the coefficient of thermal expansion (CTE) and the optical transmittance decreased with increasing inorganic filler content. In addition to filler contents, the size and size distribution of fillers are the other important factors to improve CTE and optical transmittance of PEN film. Our results showed that the optimum filler content was found to be about 5 wt% to enhance the dimensional stability of PEN by more than 50% with maintaining the optical transmittance over 85% for the flexible substrate.