FTIR 분자구조 해석을 통한 에폭시-실리카 나노복합소재의 열기계적 물성 연구
Study on the Thermomechanical Properties of Epoxy-Silica Nanocomposites by FTIR Molecular Structure Analyses
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초록
이 연구에서는 에폭시 수지에 포함된 나노 실리카 입자의 농도가 재료의 열/기계적 물성에 미치는 영향에 대해 알아보았다. 약 12 nm 크기의 나노 입자를 에폭시 수지에 다섯가지 무게비로 섞은 나노복합소재를 제작하였다. DMA 와 TMA 방법을 이용하여 유리전이온도, 응력이완, 열팽창 거동을 측정하였다. 이를 통해 나노입자가 재료의 점탄성 거동에 어떠한 영향을 미치는지 보였다. 실리카 입자의 함량이 증가할수록 순수 에폭시 재료 대비 탄성 물성은 증가하였고, 유리전이온도는 감소하였다. FTIR 결과는 분자구조의 관점에서 충진제 함량에 따른 물성변화의 원인을 찾고 나노입자가에폭시 분자 구조에 어떠한 영향을 미치는지를 규명하는데 중요한 역할을 하였다.
Abstract
This paper analyzed the effects of the concentration of nano-silica particles contained in epoxy resin on the thermomechanical properties of the composite materials. The 12nm sized nanoparticles were mixed with epoxy polymer by 5 different weight ratios for the test samples. The glass transition temperature, stress relaxation, and thermal expansion behaviors were measured using dymanic mechanical analyzer (DMA) and thermomechanical analyzer (TMA). It was shown that the nano particle mixing ratios had significant influences on the viscoelastic behaviors of the materials. As the content of the silica particles was increased, the elastic modulus was also increased, while the glass transition temperatures were decreased. Fourier Transform Infrared Spectroscopy (FTIR) results played an important role in determining the causes of the property changes by the filler contents in terms of the molecular structures, enabling the interpretations on the material behaviors based on the chemical structure changes.
참고문헌 (17)
- S. Kumar, "50th Anniversary Perspective : Are Polymer Nanocomposite Practical for Applications?", Macromolecules, 50(3), pp.714~ (2017)
- V. Arabli, "The Effect of Silica Nanoparticles, Thermal Stability, and Modeling of the Curing Kinetics of Epoxy", silica Nanocomposite, 2015, pp.24(6), 561~
- 이승민, "하이브리드 필러를 함유한 에폭시 복합체의 열적 특성 연구", 마이크로전자 및 패키징학회지, 26(4), pp.33~37 (2019), 한국마이크로전자및패키징학회
- WANG QI, "벤젠 유기물 도입에 따른 실리카 기반 에어로겔의 소수성 및 기계적 특성 연구", 마이크로전자 및 패키징학회지, 27(4), pp.135~141 (2020), 한국마이크로전자및패키징학회
- B. N. Jang, "The effects of clay on the thermal degradation behavior of poly(styrene-co-acrylonitirile)", Polymer, 46, pp.9702~ (2005)
- Z. Peng, "A thermal degradation mechanism of polyvinyl alcohol", silica Nanocomposites, 2007, pp.92, 1061~
- 장서현, "에폭시-실리카 나노 복합소재의 열화 특성 및 거동 분석", Composites Research, 33(5), pp.268~274 (2020), 한국복합재료학회
- W. Li, "Effect of SiO2 nanoparticles on the reaction induced phase separation in dynamically asymmetric epoxy", PEI blends, 2015, pp.5, 8471~
- Y. L. Lui, "Preparation and Thermal Properties of Epoxy-silica Nanocomposites from Nanoscale Colloidal Silica", Polymer, 44(18), pp.5159~ (2003)
- C. Chen, "Highly Dispersed Nanosilica-epoxy Resins with Enhanced Mechanical Properties", Polymer, 49(17), pp.3805~ (2008)
- J. Zhou, "Hygrothermal effects of epoxy resin. Part II : variations of glass transition temperature", Polymer, 40, pp.5513~ (1999)
- C. P. Wong, "Thermal conductivity, elastic modulus, and coefficient of thermal expansion of polymer composites filled with ceramic particles for electronic packaging", Applied Polymer, 74(14), pp.3396~ (1999)
- A. Doblies, "Prediction of Thermal Exposure and Mechanical Behavior of Epoxy Resin using Artificial Neural Networks and Fourier Transform Infrared Spectroscopy", Polymers, 11, pp.363~ (2019)
- Y. Yin, "Characterization of Coals and Coal Ashes with High Si Content Using Combined Second-Derivative Infrared Spectroscopy and Raman Spectroscopy", Crystals, 9, pp.513~ (2019)
- M. C. Andrade, "Improving hydraulic permeability, mechanical properties, and chemical functionality of cellulose acetate-based membranes by co-polymerization with tetraethyl orthosilicate and 3-(aminopropyl)triethoxysilane", Carbohydrate Polymers, 261, pp.117813~ (2021)
- S. Sprenger, "Nanosilica-Toughened Epoxy Resins", Polymers, 12, pp.1777~ (2020)
- J. Liang, "Heterogeneous Catalysis in Zeolites, Mesoporous Silica, and Metal-Organic Frameworks", Advanced Materials, 29(30), pp.1701139~ (2017)