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Shape Change by Heat Treatment of the Braid Used as a Substrate for the Composite Hollow Fiber Membrane

복합중공사막 브레이드 지지체의 열처리에 따른 형태 변화

  • Hongwon Park (Digital Transformation (DX) Research Department, Korea High Tech Textile Research Institute) ;
  • Jonghoon Kim (Digital Transformation (DX) Research Department, Korea High Tech Textile Research Institute) ;
  • Jonghyung Woo (Digital Transformation (DX) Research Department, Korea High Tech Textile Research Institute) ;
  • Hoyoung Lee (Digital Transformation (DX) Research Department, Korea High Tech Textile Research Institute) ;
  • Seongbin Park (Digital Transformation (DX) Research Department, Korea High Tech Textile Research Institute)
  • 박홍원 (한국섬유소재연구원 DX 혁신본부) ;
  • 김종훈 (한국섬유소재연구원 DX 혁신본부) ;
  • 우종형 (한국섬유소재연구원 DX 혁신본부) ;
  • 이호영 (한국섬유소재연구원 DX 혁신본부) ;
  • 박성빈 (한국섬유소재연구원 DX 혁신본부)
  • Received : 2023.04.10
  • Accepted : 2023.04.28
  • Published : 2023.06.30

Abstract

The composite hollow fiber membrane is a ultra filtration made by coating a polymer mixture on the surface of the braid, which is a substrate. Compared to a single membrane, it has excellent strength, durability and life time. In this study, we tried to develop a heat treatment method to flatten the surface of the braid used as a fiber support for the composite hollow fiber membrane and improve the circularity of the cross section. A heat treatment device capable of controlling temperature and take-up speed was devised, and braids were heat treated with various conditions. As a result of comparing surface and cross-section images, it was observed that the surface of the specimen treated at 220 ℃ or higher was flattened by heat treatment and the cross-section became closer to a circular shape. And it was found that the lower take-up speed, the larger the diameter change due to heat shrinkage.

Keywords

Acknowledgement

본 연구는 산업통상자원부 소재부품기술개발사업(20010447)의 지원으로 수행되었음.

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