DOI QR코드

DOI QR Code

Evaluation of Moisture Sorption Characteristics in Polymer Material

고분자 소재에서 흡습 특성의 평가

  • Park, Hee-Jin (Corporate R&D Institute, Samsung Electro-Mechanics Co., Ltd.)
  • Received : 2011.12.21
  • Accepted : 2012.08.17
  • Published : 2012.11.01

Abstract

In this paper, the standard procedures for measuring the moisture sorption properties of thin polymeric materials such as polyethylene terephthalate (PET) by using the thermo-gravimetric method to characterize the moisture diffusion in the polymer are presented, and the sorption properties are quantified. The moisture diffusivity and solubility are characterized to investigate the effect of temperature and humidity on the moisture sorption properties according to the Arrhenius equation. The validation of the obtained sorption properties using thermogravimetry is discussed with the measured permeability based on Fickian diffusion. The nonlinear behavior of the concentration dependent moisture diffusion is investigated experimentally, and the nonlinearity is characterized numerically for the case of having an interface with an inorganic material such as a metal. The Fickian/Non-Fickian model based on the obtained moisture sorption properties is compared and discussed.

본 논문에서는 PET(Polyethylene Terephthalate)와 같은 박막 형태의 고분자 소재에서 수분 확산을 특성화 하기 위한 표준 과정을 열 중량법을 사용하여 제시하고 소재의 흡습 물성을 정량적으로 얻었다. 온도 및 습도에 대한 흡습 물성들의 영향을 조사하기 위해 아레니우스(Arrhenius) 식에 따른 PET 필름의 용해성과 확산성을 특성화 하였다. Fickian 확산에 기반한 박막 소재의 수분 투과성을 구하여 열중량법에서 얻은 흡습 물성의 타당성을 토론하였다. 고분자 소재가 금속과 같은 무기물과 다층 경계면을 가지는 경우 농도에 의존적인 비선형 수분 확산성의 특성을 실험적으로 조사하였고 Non-Fickian 모델에 따른 비선형 확산 특성을 수치적으로 정량화 하였다. 얻어진 흡습 물성들에 기반한 Fickian/Non-Fickian 모델에 대해 수치적으로 비교 및 토론 하였다.

Keywords

References

  1. Galloway, J. E. and Miles, B. M., 1997, "Moisture Absorption And Desorption Predictions for Plastic Ball Grid Array Packages," IEEE Trans. Comp. Packag. Manuf. Technol., Vol. 20, pp. 274-279. https://doi.org/10.1109/95.623021
  2. Wong, E. H. and Rajoo, R., 2003, "Moisture Absorption and Diffusion Characterization of Packaging Materials-Advanced Treatment," Microelectron. Reliab., Vol. 43, pp. 2087-2096. https://doi.org/10.1016/S0026-2714(03)00378-0
  3. Stellrecht, E., Han, B. and Pecht, M. G., 2004, "Characterization of Hygroscopic Swelling Behavior of Mold Compounds And Plastic Packages," IEEE Trans. Comp. Pkg. Tech., Vol. 27, pp. 499-506. https://doi.org/10.1109/TCAPT.2004.831777
  4. Fan, X. J. and Lim, T. B., 1999, "Mechanism Analysis for Moisture-Induced Failure in IC Packages," Proc. ASME IMECE 11th Symposium on Mechanics of Surface Mount Assemblies, Nashville, Tennessee, pp.14-19.
  5. Vitoratos, E., Sakkopoulos, S., Dalas, E., Paliatsas, N., Karageorgopoulos, D., Petraki, F., Kennou, S. and Choulis, S. A., 2009, "Thermal Degradation Mechanism of PEDOT:PSS," Organic Electronics, Vol. 10, No. 1, pp. 61-66. https://doi.org/10.1016/j.orgel.2008.10.008
  6. Hodge, R. M., Edward, G. H. and Simon, G. P., 1996, "Water Absorption and State of Water in Semicrystalline Poly(Vinyl Alcohol) Films," Polymer, Vol. 37, No. 8, pp.1371-1376. https://doi.org/10.1016/0032-3861(96)81134-7
  7. Ruvolo-Filho, A. and Da Silva, A., 1998, "Transport of Dichloromethane in Poly(ether Imide) Films. Effect of the Solvent Activity and Temperature," J. Macromol. Sci. Phys., Vol. B37, pp. 349-363.
  8. Ruvolo-Filho, A. and Murakami, M. M., 1998, "Transport Properties of Water in Glassy Polycarbonate Films. Effects of the Processing and Thickness," J. Macromol. Sci. Phys., Vol. B37, pp. 627-643.
  9. Pasternak, R. A., Schimscheimer, J. F. and Heller, J., 1970, "A Dynamic Approach to Diffusion and Permeation Measurements," J. Poly. Sci.: Part A-2, Vol. 8, pp.467-479. https://doi.org/10.1002/pol.1970.110080702
  10. Jang, C., Han, B. and Yoon, S., 2010, "Comprehensive Moisture Diffusion Characteristics of Epoxy Molding Compounds over Solder Reflow Process Temperature," IEEE Trans. Comp. Packag. Tech., Vol. 33, No. 4, pp. 809-818. https://doi.org/10.1109/TCAPT.2010.2063430
  11. Comyn, J., 1985, "Polymer Permeability," Elsevier Applied Science Publishers, New York.
  12. ASTM D5229, 1998, "Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials."
  13. Crossman, F. W., Mauri, R. E. and Warren W. J., 1978, "Advanced Composite Materials-Environemntal Effects," ASTM STP, Vol. 658, pp. 205-220.
  14. Wolff, E. G., 1991, "Polymer Matrix Composites: Moisture Effects and Dimensional Stability," Int. Encyclopedia Comp., Vol. 4, New York, VCH Publishers, pp. 279-323.
  15. Launay, A., Thominette, F. and Verdu, J., 1999, "Water Sorption in Amorphous Poly(ethylene terephthalate)," J. Appl. Pol. Sci., Vol. 73, p. 1131. https://doi.org/10.1002/(SICI)1097-4628(19990815)73:7<1131::AID-APP4>3.0.CO;2-U
  16. ASTM F1249, 1995, "Standard Test Method for Water Vapor Transmission Rate Through Plastic Film And Sheeting Using a Modulated Infrared Sensor."
  17. Brandrup, J. and Immergut, E. H., 1989, "Polymer Handbook," 3rd ed. Wiley, New York.
  18. Evans, D. H., 1992, "Probability and Its Applications for Engineers," Mercel Dekker Inc.

Cited by

  1. Reliability Evaluation Through Moisture Sorption Characterization of Electronic Packaging Materials vol.37, pp.9, 2013, https://doi.org/10.3795/KSME-A.2013.37.9.1151