Original Article
  • Development of High-strength Polyethylene Terephthalate (PET) Sheet Through Low Melting Point Binder Compounding and Compression Process 

  • Jai Joung Moon*,****, Ok-Kyung Park***†, Nam Hoon Kim**†

  • * Advanced Materials Research Institute for BIN Convergence Technology & Department of BIN Convergence Technology, Jeonbuk National University, Jeonju, Korea
    ** Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Korea
    *** Carbon Nano Convergence Technology Center for Next Generation Engineers (CNN), Jeonbuk National University, Jeonju, Korea
    **** R&D Center, Clean & Science Co, Ltd., Seoul, Korea

  • 저 융점 바인더 복합화 및 압착공정을 통한 고강도 폴리에틸렌 테레프탈레이트(PET) 시트 개발 

  • 문재정*,**** · 박옥경***† · 김남훈**†

Abstract

In the present study, a high-strength polyethylene terephthalate (PET) sheet was fabricated through a densification process of low melting PET fiber (LMF) combined PET sheet. During the thermal heat treatment process of the combined LMF, individual PET fiber was connected, which in turn leads to the improvement of the interfacial bonding force between the fibers. Also, the densification of the PET sheet leads to reduce macrospore density and in return could enhance the binding force between the overlapped PET networks. Consequently, the as-prepared LMF-PET sheet showed about 410% improved tensile strength and the same elongation compared to before compression. Besides, the enhanced bonding force can prevent the shrinkage of the PET fiber network and exhibited excellent dimensional stability.


본 연구에서는 저 융점 폴리에틸렌 테레프탈레이트(PET) 섬유(Low melting PET fiber: LMF)가 복합화된 PET시트의 고밀도화 공정을 통해 고강도 PET 시트를 제조하였다. 복합화된 LMF는 열처리 과정에서 용융되어 개개의 PET 섬유를 연결해 섬유간의 계면결합력을 향상시켰다. 또한 PET시트의 고밀도화는 거대기공밀도를 감소시키고 중첩된 PET 네트워크간의 결합력을 향상시켜 결과적으로 압축 전 LMF-PET 시트와 비교하여 연신율은 유지하면서 약 410% 향상된 인장강도를 보여주었다. 또한 강화된 결합력은 PET 섬유 네트워크의 수축을 방지하여 우수한 치수안정성을 나타내었다.


Keywords: 고분자필름(Polymer film), 기계적 물성(Mechanical properties), 압착공정(Compression process), 복합소재(Composite materials), 계면결합력(Interfacial bonding force)

This Article

Correspondence to

  • Ok-Kyung Park***, Nam Hoon Kim**

  • ** Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Korea
    *** Carbon Nano Convergence Technology Center for Next Generation Engineers (CNN), Jeonbuk National University, Jeonju, Korea

  • E-mail: okpark@jbnu.ac.kr, nhk@jbnu.ac.kr