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Measuring the Mechanical Properties of Polymer Films Coated on Hard Substrates Using Nanoindenter

Nanoindentation를 이용한 경질 기재에 코팅된 고분자 필름의 기계적 물성 측정

  • 신성환 (한라대학교 화학공학과)
  • Received : 2024.08.03
  • Accepted : 2024.11.05
  • Published : 2024.11.30

Abstract

The instrumented indentation test is a valuable analytical technique for analyzing the local properties of nanocomposite materials or the surface properties of thin coatings, such as films, which cannot be measured by traditional mechanical property measurement methods like tensile testing or Vickers hardness testing. This technique involves applying and removing a load on the surface of the target material using an indenter with a specific geometric shape. By continuously measuring the load and indentation depth during this process, an indentation-load curve is obtained and analyzed to determine the mechanical properties of the material. This study aims to derive the optimal measurement conditions for assessing the mechanical properties of polymer films coated on rigid substrates, such as displays, using a nanoindenter, which is the most representative instrument for the instrumented indentation test. Through the interpretation of the measurement results, the study seeks to analyze the mechanical properties of the polymer films coated on rigid substrates.

계장화압입시험은 인장시험기나, 비커스경도 시험법 등과 같은 전통적인 기계적 물성 측정법으로 측정 할 수없는 나노 복합 소재의 국부적 특성이나 박막과 같은 얇은 코팅 소재의 표면 특성을 분석 할 수 있는 유용한 분석기술로 일정한 기하학적 형상을 가지는 압입자를 이용하여 대상 소재 표면에 하중을 인가하고, 제거하는 과정 중에 나타나는 하중과 압입 깊이를 연속적으로 측정하여 얻어지는 압입-하중 곡선을 해석하여 소재의 기계적 물성을 측정하는 기법이다. 본 연구는 계장화압입시험의 가장 대표적인 시험기라고 할 수 있는 나노인덴터를 이용하여 디스플레이와 같은 경질 기재 위에 코팅된 고분자 필름의 기계적 물성을 측정하기 위한 최적 측정조건을 도출하여 기계적 물성을 측정하고, 이렇게 측정된 결과의 해석을 통하여 경질 기재 위에 코팅된 고분자 필름의 기계적 물성을 분석 해보고자 한다.

Keywords

References

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