알콕시 실란계 석재 보존 및 강화제 개발
Development of Alkoxysilane Mixed Solution as Stone Preservation and Consolidation Materials
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초록
젤 반응을 통해 약화된 석재 조직에 응집력을 주어 석재를 강화시킬 뿐 아니라, 물의 침투로 인하여 발생될 수 있는 석재의 풍화나 손상을 방지하기 위해 소수성 도입 및 2차 박리를 막기 위해 에폭시 접착제와 상호작용이있는 기능성 석재강화제를 개발하였다. 또한 상업적으로 사용되고 있는 알콕시실란계 강화제의 특성을 비교 연구하였다. 상업화된 알콕시 실란계 석재 강화제의 기본 물질인 tetraethoxysilane 에 발수성 기능을 갖고 있는 methy tri silane, ethyl tri silane 그리고 에폭시기를 갖고 있는 (3-glycidyloxypropyl)trimethoxysilane 를 도입하여 기능성 석재 강화제를 개발하였다. 사암과 화강암에 처리하였고, 젤 형성 시간, 발수성 및 기공도 변화, FT-IR 분석 및 SEM등을 통해 상업화된 석재 강화제와 비교하여, 응용가능성을 확인하였다.
Abstract
Low-viscosity alkoxysilanes that polymerize into the porous network of decayed stone by a sol-gel process are widely used as stone consolidants. During drying, the gel network contracts due to capillary pressure generated by solvent evaporation. We have prepared tetraethoxysilane mixed solution containing methyltrisilane, ethyl trisilane and (3-glycidyloxypropyl)trimethoxysilane having epoxy ring in order to reduce the shrinkage happened inside the stone porous structure during the gel formation. Mixed solutions were applied into sandstone and granites and characterized by FT-IR, SEM. The gelation time, water uptake, contact angles were measured and compared with those of the commercial stone conservation materials.
참고문헌 (11)
- Ashurst J, "Conservation of buildingand decorative stone" (1998), Butterworth Heinemann
- Ballester, M. A. de B, "Basicmethodology for the assessment and selection ofwater-repellent treatments applied on carbonaticmaterials", 43, pp.258~266 (2001)
- Wheeler G, "Research in Conservation Alkoxysilanes and the Consolidation of Stone" (2005), TheGetty Conservation Institute
- Mazzola, M, "New strategies for the synthesis of partially fluo-rinated acrylic polymers as possible materials forthe protection of stone monuments", 39, pp.1995~2003 (2003)
- Toniolo L, "Tailoring new fluo-rinated acrylic copolymers as protective coating formarble", 3, pp.309~316 (2002)
- Thompson M, "Polymer coations to passivate calcitefrom acid attack: polyarylic acid and polyacryloni-trile", 260, pp.204~210 (2003)
- Vicini S, "In situ copolymerization of ethylmethacrylateand methylacrylate for the restoration of stoneartefacts", pp.143~147 (2001)
- Bosch E, "Use of silicones in conservation ofmoniments", 11(16), pp.21~26 (1973)
- Bosch, "Bindercomposition for inorganic compounds" (1976)
- Cardiano P, Ponterio, R.C, "Epoxy-silica polymers asstone conservation materials", pp.1857~1864 (2005)
- Puterman, M, "Development of organosilicone-polyurethanes asstone preservation and consolidation materials", 59, pp.1237~1242 (1996)