Browse > Article
http://dx.doi.org/10.5139/JKSAS.2020.48.12.945

Analyses of Nano Epoxy-Silica Degradation in LEO Space Environment  

Jang, Seo-Hyun (Department of Mechanical Engineering, Inha University)
Han, Yusu (Department of Polymer Science and Engineering, Inha University)
Hwang, Do Soon (Korea Aerospace Research Institute)
Jung, Joo Won (Korea Aerospace Research Institute)
Kim, Yeong Kook (Department of Mechatronics Engineering, Inha University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.48, no.12, 2020 , pp. 945-952 More about this Journal
Abstract
In this study, the effects of Low Earth Orbit(LEO) environments on the degradation behavior of epoxy nano silica composite materials were investigated. The nanocomposite materials containing silica particles in different weight ratios of 10% and 18% were prepared and degraded in a LEO simulator to compare with the neat epoxy cases. Thermogravimetric analysis (TGA) was performed on the degraded nanocomposites and the activation energies were calculated by Friedman method, Flynn-Wall-Ozawa (FWO) method, Kissinger method, and DAEM (Distributed Activation Energy Method) based on the iso-conversional method. As the results, for the neat epoxy sample cases, it was found that the average activation energy was increased as the degradation was progressed. When the nano particles were mixed, however, the energy increased to the 15 environmental test cycles, and decreased afterwards, meaning that the particle mixture contributed adversely to the thermal degradation. Discussions on the results of the different calculation methods were also given.
Keywords
Low Earth Orbit; Degradation; Iso-conversional Method; Activation Energy;
Citations & Related Records
연도 인용수 순위
  • Reference
1 de Groh, K. K., Banks, B. A. and Demko, R., "Techniques for Measuring Low Earth Orbital Atomic Oxygen Erosion of Polymers," 2002 Symposium and Exhibition sponsored by the Society for the Advancement of Materials and Process Engineering, Long Beach, CA, May 2002.
2 Stidham, C. S., Stueber, T. J., Banks, B. A., Dever, J. A. and Rutledge, S. K., "Low Earth Orbital Atomic Oxygen Environmental Simulation Facility for Space Materials Evaluation," 38th International SAMPE Symposium and Exhibition, Anaheim, CA, June 1993.
3 Son, G. S. and Kim, C. G., "Protective effect of nanocomposite film from the low earth orbit environment," Journal of Composite Materials, Vol. 49, No. 19, July 2014, pp. 2297-2306.   DOI
4 Suliga, A., Hamerton, I. and Viquerat, A., "Cycloaliphatic epoxy-based hybrid nanocomposites reinforced with POSS or nanosilica for improved environmental stability in low Earth orbit," Composites Part B, Vol. 138, April 2018, pp. 66-73.   DOI
5 Han, J. H., Lee, S. E., Lee, W. J. and Kim, C. G., "Changes of LEO Space Environment Characteristics of Epoxy by Reinforcement of MWNTs," The Korean Society for Aeronautical and Space Sciences, November 2004, pp. 550-553.
6 Yagnamurthy, S., Chen, Q., Chen, C. and Chasiotis, I., "Erosion yield of epoxy-silica nanocomposites at the lower earth orbit environment of the International Space Station," Journal of Composite Materials, Vol. 47, No. 1, 2012, pp. 107-117.   DOI
7 Lv, M., Wang, Q. H., Wang, T. and Liang, Y., "Effects of atomic oxygen exposure on the tribological performance of ZrO2-reinforced polyimide nanocomposites for low earth orbit space applications," Composites Part B-Engineering vol, 77, 2015, pp. 215-222.   DOI
8 Miller, S. K. R. and Banks, B., "Degradation of Spacecraft Materials in the Space Environment," MRS Bull, Vol.35, No. 1, 2010, pp. 20-24.   DOI
9 Rivera Lopez, M. Y., Lambas, J. M., Stacey, J. P., Gamage, S., Suliga, A., Viquerat, A., Scarpa, E. and Hamerton, I., "Development of Cycloaliphatic Epoxy-POSS Nanocomposite Matrices with Enhanced Resistance to Atomic Oxygen," Molecules, Vol. 25, No. 7, 2020, p. 1483.   DOI
10 Jin, S. B., Son, G. S., Kim, Y. H. and Kim, C. G., "Enhanced durability of silanized multiwalled carbon nanotube/epoxy nanocomposites under simulated low earth orbit space environment," Composites Science and Technology, Vol. 87, No. 18, 2013, pp. 224-231.   DOI
11 Rueda-Ordóñez, Y. J. and Tannous, K., "Isoconversional Kinetic study of the thermal decomposition of sugarcane straw for thermal conversion processes," Bioresource Technology, Vol. 196, November 2015, pp. 136-144.   DOI
12 Venkatesh, M., Ravi, P. and Tewari, S. P., "Isoconversional kinetic analysis of decomposition of nitroimidazoles: Friedman method vs FlynnWall-Ozawa Method," The Journal of Physical Chemistry A, Vol. 117, 2013, pp. 10162-10169.   DOI
13 Petru, B. and Adrei, C., "Application of Kissinger, isoconversional and multivariate nonlinear regression methods for evaluation of the mechanism and kinetic parameters of phase transitions of type Ι collagen," Thermochimica Acta, Vol. 565, No. 10, August 2013, pp. 241-252.   DOI
14 Henrik, S., "From the Kissinger equation to model-free kinetics: reaction kinetics of thermally initiated solid-state reactions," ChemTexts, Vol. 4, No. 9, August 2018, pp. 4-9.   DOI
15 Dhaundiyal, A. and Singh, S. B., "Distributed activation energy modelling for pyrolysis of forest waste using Gaussian distribution," Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences, Vol. 70, No. 2, 2016, pp. 64-70.   DOI
16 Simon, P., "Isoconversional methods- Fundamentals, meaning and application," Journal of Thermal Analysis and Calorimetry, Vol. 76, No. 1, 2004, pp. 123-132.   DOI
17 Blaine, R. and Kissinger, H., "Homer Kissinger and the Kissinger Equation," Thermochemica Acta, Vol. 540, 2012, pp. 1-6.   DOI