• Title/Summary/Keyword: conservation property

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Conservation Treatment of Sand Stone by Pressurized Impregnation with Acrylic Materials (아크릴계 보존처리제를 이용한 사암의 가압함침 보존처리)

  • Kim, Youn-Cheol;Kim, Sa-Duk;Kim, Hyung-Joong
    • Journal of Conservation Science
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    • v.27 no.4
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    • pp.395-401
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    • 2011
  • After pressurized impregnation treatment, which has been proposed as an effective conservation method for stone cultural property, was executed with methyl metacrylate (MMA), MMA-butyl acrylate (PMB73) mixture and MMA-vinyl trimethoxy silane (PMV5) co-monomer mixture, the physical-chemical properties on the sand stone and the granite impregnated were evaluated. Compared to the case of granite, the impregnation ratios of sand stone showed larger values in the range of 3.2 to 3.7 wt% and these were increased up to 32% when the decompression process was applied to autoclave. The physical properties of sand stone such as anti-moisture property, flexural strength, impact property and ultrasonic velocity were also higher values than those of granite, which can be interpreted by high impregnation ratio resulted in many void within sand stone. The impact failure energy was 1.22 J for PMMA, 1.84 J for PMB73, and 2.8 J for PMV5, respectively. Since the inorganic affinity of treatment agent is more effective than the molecular structure of acrylic agent, PMV5 improved inorganic property indicates the optimum impact property.

Study of the Annals of Joseon Dynasty for Developing Systematic Conservation Scheme (조선왕조실록의 체계적 보존을 위한 기초 연구)

  • Jung, Sun-Young;Lee, Min-Woo;Jang, Hyeon-Joo;Seo, Yung-Bum
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.45 no.2
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    • pp.1-12
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    • 2013
  • The annals of Joseon Dynasty designated as a national treasure No. 151 and a UNESCO World Memory are among the greatest archives that should be preserved permanently and inherited to future generations through the proven scientific conservation method. The annals of Joseon Dynasty in the custody of the National Archives of Korea as the sole original archive, has been restricted from the direct physical and chemical approaches. In this study, it is to develop a systematic conservation management scheme, based on the conservation state of the annals. Four books from the annals were selected out of 848 books and their moisture contents and optical property profiles were measured through the books. All the defects previously and newly found were pictured in 10~100 magnifications. The wire marks left on the Hanji's of the annals were analyzed. It was found that water damages and paper molds were prevalent in all four annals selected, and it was recommended to conduct more research for the conservation of those damaged areas. It turned out that various qualities of Hanji's were used for the time of publishing the annals because moisture content, optical properties, and wire mark intervals were quite different between papers even within one book.

The Development of the Unfading Urethane Polymer Based on Reversible Properties for Ceramics and Restoration with This Urethane Product (가역성을 갖는 도자기 복원용 무황변 우레탄 수지의 개발과 이를 이용한 도자기의 복원)

  • Han, Won-Sik;Park, Gi-Jung;Lim, Sung-Jin;Lee, Young-Hoon;Hong, Tae-Kee;Wi, Koang-Chul
    • Journal of Conservation Science
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    • v.26 no.2
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    • pp.183-190
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    • 2010
  • We fabricated urethane material based on properties of reversible and unfading for antic-ceramics restoration. This material with low viscosity was made hardness control possible that user want. And it have very strong adhesion and shear strength properties and is shown the best properties for pigment filling, anti-contractibility, coloring as like epoxy system materials. Particularly, the yellowing and ir-reversibility problem in epoxy restoration material were finally solved. So, there is guarantee in the eternity and stabilization of restoration for antic-celamics. And in order to show the reversible state of the restoration, we successfully dissolve this urethane materials in solvent after perfect restoring subsequently.

Basic Research on 3D Cultural Heritage Packaging Technology Using Thermoplastic Polyurethane Elastomers

  • Oh, Seung-Jun;Wi, Koang-Chul
    • Journal of Conservation Science
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    • v.37 no.1
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    • pp.55-62
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    • 2021
  • This study investigated mechanical property changes by measuring compression factors, resilience, and compressive strength according to packaging pattern and filling rate to identify the applicability of cultural heritage packaging using thermoplastic polyurethane elastomers (TPU). Research results indicate that the cross-shaped 3D pattern showed the best resilience when the internal filling rate was 20%, while the octet pattern was the best when the filling rate was either 40 and 60%. The octet pattern had the best mechanical properties and stability with resistance capacities of 20.79 kgf/cm2, 40.40 kgf/cm2, and 82.23 kgf/cm2 at 38%, 39%, and 40% recovery speeds, respectively, depending on the internal filling rate (20, 40, 60%). Based on these results, basic data on the applicability, stability, and reliability of 3D cultural heritage packaging materials using TPU materials were obtained.

A Study on the Status of and Improvement Plan for Documentation of City·Province Intangible Cultural Properties (시·도지정무형문화재 기록화 현황 및 개선 방안 연구)

  • Beak, Ju-Hyun;kim, Soon-Hee
    • Journal of Korean Society of Archives and Records Management
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    • v.10 no.1
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    • pp.77-97
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    • 2010
  • Cultural property means the remains of cultural activities of a race as recognized with significant cultural value that would have significant historic and/or artistic value. This type of cultural property would not be restored once damaged that its preservation and succession would be immensely important. In particular, the intangible cultural property is the 'cultural property without certain shape' that appropriate conservation and facilitation suitable to its characteristics have to be materialized. For this purpose, this study has taken a look of the record status for 16 cities and provinces with the designated intangible cultural properties and presented with the efficient record plan for desirable conservation and succession.

A Study of Stone Cultural Heritage on Filler Status and Clinical Trials of Conservation Treatment in Cracks - Focusing on the Change in Surface of the Filler by Mixing the Talc - (석조문화재 균열부 보존처리 충전제의 현황과 임상실험 고찰 - 활석을 혼합 한 충전제의 표면변화를 중심으로 -)

  • Lee, Tae Jong;Oh, Hyeon Jung;Kim, Sa Dug;Lee, Jang Jon
    • Journal of Conservation Science
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    • v.30 no.4
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    • pp.383-393
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    • 2014
  • It is used for the epoxy resin, a mixture of various fillers conservation of cracks of the stone cultural heritage. Such as conservation treatment is need to for long-term conservation. However, field research and experiments on the conservation treatment results when included 54 cases of talc filler was confirmed that the damage, such as discoloration and cracks. The field research is talc was used to determine whether the reports and conservator interviews conducted, microscopy, ICP analysis of the samples collected from the field site. Experiments is color difference measurement and Ultrasonic measurement were arried out, and artificial weathering tests to investigate the effect of talc. As a result, lower the property of matter of the samples containing the talc. Therefore, we propose that the selection process is not allowed to use talc as the filler of stone powder filler cracks is conservation treatment.

Scientific Analysis of Metal in Chinese and Korean Traditional Gold Thread (중국과 한국 전통금사 금속의 과학적 분석 연구)

  • Jeong, Seon Hye;Yu, Ji A;Chung, Yong Jae;Sim, Yeon Ok
    • Journal of the Korean Society of Clothing and Textiles
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    • v.37 no.6
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    • pp.764-771
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    • 2013
  • The metal component of Chinese and Korean traditional gold thread was analyzed nondestructively using P-XRF and classified morphologically. In the nondestructive analysis of 22 Chinese and Korean artifacts, there were 10 gold threads made up of Au in China and 7 in Korea; in addition, there were 4 silver threads made up of Ag in Korea and 1 copper thread made up of Cu in China. In the morphological classification, 7 gilt paper strips were confirmed in China and Korea and 4 wrapped threads were identified in China and Korea. Zn, Sn and Fe (minor components of the threads) were detected. These components were assumed to be transferred from the metal found in burial goods.