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도자기 복원용 저황변 Epoxy 수지의 개발 및 물성에 대한 연구

A Study on the Development and Physical Properties of Low Yellowing Epoxy for Ceramic Preservation

  • 김우현 ((재)중앙문화재연구원) ;
  • 정다솜 (한서대학교 문화재보존과학연구센터) ;
  • 배진수 ((재)중앙문화재연구원) ;
  • 지주연 (한서대학교 문화재보존과학연구센터) ;
  • 위광철 (한서대학교 문화재보존과학연구센터)
  • Kim, Woo Hyun (JungAng Research Institute of Cultural Heritage) ;
  • Cheong, Da Som (The Research of Conservation Science for Cultural Heritage, Hanseo University) ;
  • Bae, Jin Soo (JungAng Research Institute of Cultural Heritage) ;
  • Jee, Joo Yeon (The Research of Conservation Science for Cultural Heritage, Hanseo University) ;
  • Wi, Koang Chul (The Research of Conservation Science for Cultural Heritage, Hanseo University)
  • 투고 : 2014.04.19
  • 심사 : 2014.05.12
  • 발행 : 2014.06.20

초록

도자기 복원용으로 가장 많이 사용되고 있는 에폭시 복원제는 높은 접착력, 저수축, 고강도 등의 조건을 충족시키지만 에폭시 수지(Epoxy resin) 자체의 황변 현상으로 인하여 복원 후 시간이 경과함에 따라 복원부의 색이 변하는 단점을 지니고 있다. 본 연구에서는 도자기 복원용으로 사용되고 있는 에폭시 수지(Epoxy resin)의 문제점인 황변 현상을 대폭줄인 저황변 및 접착력과 고강도를 가진 복원제를 개발하고자 하였다. 기존 에폭시 재료 중에 도자기 복원 재료로 많이 사용되고 있는 EPO-TEK301$^{(R)}$, L30$^{(R)}$, XTR-311$^{(R)}$ 등과 비교하여 접착력과 강도 등의 물성을 가지면서 황변성이 거의 없는 복원제를 개발하고자 하였다. 접착력은 개발된 수지가 2.51 MPa를 나타내도록 하여, 최고의 접착력을 나타내는 XTR-311$^{(R)}$ 2.30 MPa를 능가하도록 하였으며 1.21 MPa를 나타내는 EPO-TEK301$^{(R)}$이나 1.81 MPa을 나타내는 L30$^{(R)}$보다 약 2 배의 접착력을 나타내 도록하였다. 특히 에폭시 수지(Epoxy resin)가 지니고 있는 황변 현상 실험 결과 ${\Delta}E^*ab$ 색상 변화량의 변화 값이 10 ~ 25 정도의 변화량을 나타내고 있지만 개발된 저황변 에폭시 수지(Epoxy resin)의 경우 원액 기준 ${\Delta}E^*ab$ 색상 변화 값이 8.3으로 기존의 재료들 보다 1 ~ 3 배 정도 황변 현상을 줄여 황변 현상으로 인한 색상의 변화에 따른 이질감에 대한 문제점을 해결하였다.

AThe studies on ceramic preservation have been conducted widely in various institutions such as national/ public museums and research labs as well as the excavation institutions and university museums. Although there are some differences in preservation methodologies and materials used across the institutions, the variation is minimal. Specifically, epoxy resin is mostly used for ceramic restoration for its high cohesiveness, low contraction and high strength although there are some variations in for Ceramic Preservation. The synthetic resin type used according to the type of damage in the ceramic. However, the yellowing or the change of color across the time after the restoration is the weakness of epoxy resin. In this study, we aim to develop a material which minimizes this yellowing of epoxy resin while enhancing its cohesiveness and strength as well as other physical properties. We made the new material to have similar properties with those used widely for the ceramic restoration, such as EPO-TEK301$^{(R)}$, L30$^{(R)}$, XTR-311$^{(R)}$ through comparative experiments. The cohesiveness of the newly developed resin was improved to 2.51(MPa), which is similar level of XTR-311$^{(R)}$ of the 2.30(MPa) but about 2x higher than the other resins EPO-TEK301$^{(R)}$, L30$^{(R)}$ (1.21 and 1.81 (MPa), respectively). Especially, the experiment on yellowing shows that the existing resins show the range of color change at 10~25(${\Delta}E^*ab$), but the new low yellowing epoxy resin has the color change value at 8.3 (${\Delta}E^*ab$), the value lowering the yellowing effect to 1 to 3 times of the existing epoxy resin, thereby solving the issue of generating sense of differences due to change of color or yellowing.

키워드

참고문헌

  1. Bae, J.S., Cheong, D.S., Kim, W.H., Kang, S.I. and Wi, K.C., 2014, A Study on the Development and the Physical Properties of Epoxy Putty for Earthenware Restoration. Journal of Conservation Science. Vol.30, No.1, 103-109. (in Korean With English abstract) https://doi.org/10.12654/JCS.2014.30.1.10
  2. Han, W.S., Bae, J.S., Park ,G.J., Hong, T.K and Wi, K.C., 2010, Study on the Chemically Method of Epoxy Restoration Material in Antic Ceramics and Stabilization of Their Materials. Journal of Conservation Science. Vol.26, No.1, 25-32. (in Korean With English abstract)
  3. Kim, B.Y., 2000, Epoxy resin. Daekwang serim, 5-8. (in Korean With English abstract)
  4. Kim, K.M., 2008, A Study on the Effect of Weathering on Epoxy Polymer for the Movement of Historic Remains. The Graduate School Hanseo University, 20-21. (in Korean With English abstract)
  5. Lee, J.H., and Wi, K.C., 2010, The Study on the Weathering Characteristics about Epoxy Adhesive for the Adhesion and Restoration of Metallic Cultural Assets. Journal of Conservation Science, Vol.26, No.1, 61-67. (in Korean With English abstract)
  6. Lee, S.H., 2009, A Study on the Changes of Conservation Treatment Material of Ceramic. The Graduate School Tradional Arts Kyonggi University, 2. (in Korean With English abstract)
  7. Nam, B.G., Jeong, S.R. and Jang, S.Y., 2012, Study on the Demand Characteristics of Epoxy Resins Applied to the Restoration of Ceramics. Journal of Adhesion and Interface, Vol.13, No.4, 171-181. (in Korean With English abstract) https://doi.org/10.17702/jai.2012.13.4.171

피인용 문헌

  1. A Study on the Degradation Properties of DGEBA/TETA Epoxy System for Restoration of Ceramics by Temperature vol.31, pp.4, 2015, https://doi.org/10.12654/JCS.2015.31.4.05
  2. Evaluation of Physical Properties according to Mixing Ratio and the Survey of the Current Situation for Epoxy Resin used in Conservation vol.32, pp.2, 2016, https://doi.org/10.12654/JCS.2016.32.2.11
  3. Accelerated Degradation Test and Failure Analysis of Rapid Curing Epoxy Resin for Restoration of Cultural Heritage vol.33, pp.6, 2017, https://doi.org/10.12654/JCS.2017.33.6.06