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A Study on Improvement of the low temperature flex resistance test method about high waterproof materials

고기능성 투습방수 소재의 저온굴곡 시험방법 개선 연구

  • Lee, Minhee (Force Support System Research Center, Defense Agency for Technology and Quality) ;
  • Moon, Sunjeong (Dept. of Fashion Design, Collage of Art, Chung-Ang University) ;
  • Ko, Hyeji (Force Support System Research Center, Defense Agency for Technology and Quality) ;
  • Hong, Seongdon (Force Support System Research Center, Defense Agency for Technology and Quality)
  • 이민희 (국방기술품질원 전력지원체계연구센터) ;
  • 문선정 (중앙대학교 패션디자인학과) ;
  • 고혜지 (국방기술품질원 전력지원체계연구센터) ;
  • 홍성돈 (국방기술품질원 전력지원체계연구센터)
  • Received : 2018.08.10
  • Accepted : 2018.09.14
  • Published : 2018.09.30

Abstract

Purpose: This study is aimed at developing of the flex resistance testing process at low temperature with the waterproof fabric to suit the military environment, and is designed to fit for the purpose of the waterproof materials in order to optimize the test method by finding out matters to improve from existing the test method and through previous studies. Methods: The test method, which has been applied to flex resistance of existing water-repellent materials, was improved and consequently, differentiated test results could be obtained according to the test temperature, sample size, and flexing method. Results: The testing of the total of 8 samples revealed that performance of the military requirement could hardly be met just by presenting the materials or 2~3 layers when the quality criteria for high functional water repellent fabrics were applied. PTFE(Polytetrafluoroethylene) is preferred to PU(Polyurethane) to be used in the extremely low-temperature environment, but durability under the low-temperature environment may be varied depending on film thickness or laminating technique even if the materials of waterproof films are identical. Therefore, in addition to the material or texture, the test method capable of reflecting durability under the low-temperature environment shall be suggested, and the newly designed test method proposed in this study was shown to suggest differentiated quality criteria by the material. Conclusion: The water resistance measurement and the test method following flex resistance with expanded range of flex will enable the differentiable test of the samples according to the number of repetition. This study is meaningful in that it suggests a differentiable test method capable of establishing a basis of deciding suitable material when selecting military goods made of water repellent material by properly improving the test method.

Keywords

References

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