TY - CONF A1 - Torge, Manfred A1 - Bücker, Michael A1 - Drachenberg, E. A1 - Müller, W. A1 - Schaaf, U. ED - Roemich, H. ED - Fair, L. T1 - Protection of stained-glass windows - case studies in Poland N2 - Several restoration projects of stained-glass windows have been performed in Lower Silesia (Poland) since 2010. The aim of the projects was to protect stained-glass windows against environmental impact of industial pollutants and acid rain by installing a protective glazing. The usefulness of protective glazing has been proved by climate measurements and determination of environmental impact before and after installation. T2 - Recent Advances in Glass and Ceramics Conservation 2016, ICOM-CC Working Group “Glass and Ceramics” Interim Meeting CY - The Eugeniusz Geppert Academy of Art and Design, Wrocław, Poland DA - 25.05.2016 KW - weathering KW - stained glass KW - protective glazing KW - glass dosimeters KW - outdoor pollutants PY - 2016 SN - 978-83-64419-80-5 SP - 53 EP - 62 PB - International Council of Museums - Committee for Conservation (ICOM-CC) CY - Paris, France AN - OPUS4-36678 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Seneschal-Merz, Karine A1 - Bücker, Michael T1 - Entwicklung von transparenten farbigen keramischen Schmelzfarben für den Einsatz auf digitalen Druckmaschinen N2 - Ziel des Projektes war es, schwermetallfreie Schmelzfarben für den Einsatz auf einem Digitaldrucker zu entwickeln. Dafür sollten die Glasfarben, bei Temperaturen unter 630°C verarbeitbar und deren Eigenschaften kompatibel mit denen von Floatgläsern sein. Zudem sollte die aufgeschmolzene Farbe transparent und im Außenbereich eingesetzt beständig sein. Weiterhin mussten die Farben eine Partikelkorngröße kleiner als 20µm besitzen, um die Druckköpfe des Digitaldruckers nicht zu verstopfen. Gute Dispergierbarkeit, thixotropes Verhalten und eine schnelle Trocknung waren weitere Voraussetzungen. Die Ersetzung von PbO durch ZnO und Bi2O3 wurde getestet und zeigte positive Ergebnisse. Ein geeigneter Mahl-und Dispergierprozess wurde entwickelt. Bei der Firma „glas&räume“ wurden die Musterfarben getestet und zeigten ein gutes Druckverhalten. Bedingt durch das Tintenstrahlverfahren erreicht der Farbauftrag keine 100%ige Transparenz. Trotzdem erscheint die transparente keramische Schmelzfarbe im Vergleich zur Verwendung von opaker Schmelzfarbe tatsächlich völlig transparent. Der Unterschied ist signifikant und öffnet so ein neues Kapitel im keramischen Digitaldruck. KW - Glass KW - Low melting KW - Chemical durability KW - Dispersion of glass particle KW - Printing KW - Architecture KW - Weathering KW - Architektur KW - Chemische Beständigkeit KW - Dispergierung von Glaspartikeln KW - Glas KW - Niedrig schmelzend KW - Druck KW - Bewitterung PY - 2018 SP - 1 EP - 61 AN - OPUS4-44650 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina A1 - Bücker, Michael T1 - Long term corrosion protection - A contradiction in terms? A comparative study of modern and traditional anticorrosion systems N2 - A comparative study tested the performance of modern anti-corrosion Systems against that of traditional red lead Systems. One aim of the research project was to find alternatives for the use of a red lead priming coat, the Standard anti-corrosive primer for iron and Steel in the past but a material which endangers health as well as environment. The investigation aimed to determine whether anti-corrosion Systems developed for industrial use were suitable for the Conservation of historic iron and cast iron objects. Besides coatings containing red lead, several surface tolerant coatings with different anti-corrosion pigments were examined. The modern anti-corrosion Systems examined were suitable for surfaces where Optimum surface preparation is not practical. They were applied to both historical samples and to newly prepared model samples. After uniform pre-corrosion, the model samples were coated and underwent two different ageing procedures: accelerated ageing in a climate chamber and outdoor weathering on a test site with moderate city climate. The specimens were exposed for more than two and a half years. Evaluation of the artificially aged samples was carried out under the aspect coating degradation, tensile strength test, cross-hatch test and Fourier-transform infrared microscope. The results of the research with optical evaluation and test procedures will be presented. The two ageing methods will be discussed, with different results from the naturally and artificially aged samples. The results Show a similar eligibility of modern anti-corrosion Systems as compared with red lead Systems for the use in Conservation. T2 - Metal 2013 - ICOM-CC Interim Meeting of the Metal Working Group CY - Edinburgh, Scotland DA - 16.09.2013 KW - Comparative study KW - Anti-corrosion systems KW - Red lead coating KW - Metal Restaurierung KW - Anti-korrosions Beschichtungssysteme KW - Bleimennige-Überzüge KW - Vergleichende Studie PY - 2013 SN - 978-1-84917-142-7 SP - 79 EP - 86 AN - OPUS4-32552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - Holzschutzmittel und ihre Folgen T2 - Abschlusskolloquium des DBU-Projektes "Modelhafte Restaurierung und Schutz von Glasmalereien in bedeutenden sakralen Gebäuden Niederschlesiens, gefährdet durch schädliche Umwelteinflüsse" CY - Walbrzych, Poland DA - 2014-08-27 PY - 2014 AN - OPUS4-31345 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bücker, Michael A1 - Jäger, Christian A1 - Pfeifer, Dietmar A1 - Unger, Brita T1 - Evidence of Si-O-C bonds in cellulosic materials modified by sol-gel-derived silica N2 - The present study contributes to the controversial discussion in the literature whether Si–O–C bonds in wood–silica–gel composites exist. 13C NMR is a suitable method to proof such bonds. Because of the low concentration of 13C isotopes in natural wood, 13C cellulose was used as 13C-enriched substitute. A tailored sol for the impregnation of that cellulose was chosen by liquid 29Si NMR pre-investigations of various sols whose reactivity and stability were time-dependently analysed. It is based on a sub-stoichiometric hydrolysis of tetraethoxysilane (TEOS) with 1 mol water per mol TEOS. Thermal analyses were performed to show a comparability of the thermal behaviour of wood–silica–gel and cellulose–silica–gel composites. There are two strong hints of the existence of stable Si–O–C bonds: (1) by thermal analysis, a shift in the fire behaviour of 100 K can be observed with a change in pyrolysis behaviour of the composite and (2) the proof by REDOR NMR that a dipolar coupling between 1329Si and 13C nuclei exists. KW - Silica-cellulosic composites KW - Sol-gel derived silica KW - Si-O-C bonds KW - 13C NMR KW - 29Si NMR PY - 2014 UR - http://link.springer.com/article/10.1007/s00226-014-0657-9/fulltext.html DO - https://doi.org/10.1007/s00226-014-0657-9 SN - 0043-7719 SN - 1432-5225 VL - 48 IS - 5 SP - 1033 EP - 1047 PB - Springer CY - Berlin AN - OPUS4-31223 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Raedel, Martina A1 - Torge, Manfred A1 - Bücker, Michael ED - Uwe Peltz, ED - Olivia Zorn, T1 - Restaurierung von Glasmalereien des 19. Jahrhunderts mit modifizierten Glasklebstoffen KW - Glasgemälde des 19. Jahrhunderts KW - Glasrestaurierung KW - Glasmalerei KW - Glasklebstoffe für die Restaurierung KW - Forschungsprojektergebnisse PY - 2009 SN - 978-3-8053-3981-0 SP - 235 EP - 241 PB - Philipp von Zabern AN - OPUS4-19790 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - Kombinierte Behandlung von Holz mit Nanopartikeln T2 - 26. Holzschutztagung CY - Göttingen, Germany DA - 2010-04-22 PY - 2010 AN - OPUS4-21433 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - Kombinierte Behandlung von Holz mit Nanopartikeln T2 - 26. Holzschutz-Tagung CY - Göttingen, Deutschland DA - 2010-04-22 KW - Holzmodifikation KW - Kieselsol KW - Silane KW - Tränkung und Beschichtung KW - Holzfenster PY - 2010 SP - 137 EP - 144 AN - OPUS4-21453 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja A1 - Torge, Manfred A1 - Bücker, Michael A1 - Birkhahn, Jürgen A1 - Scharf, Holger A1 - Witthuhn, Heike T1 - The investigation of mercury emissions from historic tin-mercury mirrors T2 - Indoor Air Quality (IAQ) 2008 CY - Vienna, Austria DA - 2008-04-16 PY - 2008 AN - OPUS4-17684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hübert, Thomas A1 - Unger, Brita A1 - Bücker, Michael T1 - Sol-gel derived TiO2 wood composites N2 - The sol–gel process was applied to enhance properties of pine sapwood. For this purpose wood prisms were soaked in nanoscaled precursor solutions prepared from titanium(IV) n-butoxide and titanium(IV) iso-propoxide, respectively, using vacuum impregnation technique. The wet composites were cured by special program with final heat treatment at 103 °C. Weight percent gains (WPG) of the wood specimen in the range of 19-25% were obtained due to these procedures. SEM investigations show that precursor solutions penetrate into the whole wood body and the titania formed after heat treatment in the composites is deposited in the pores (lumen) and partly in the cell walls of the wooden matrix. The moisture sorption was investigated in long term tests for a period of some months by storage at 20-23 °C in humid air (relative humidity of 99%) and ambient atmosphere (relative humidity 40-60%), respectively. For untreated reference samples the moisture sorption results in increasing of mass and volume according to saturation values of 24 and 13%, respectively, after about 15 days. The incorporation of titania reduces the saturation values of the moisture sorption by up to 12% in mass and by up to 5% in volume at a relative humidity of 99%. Thus, an enhancement of the dimensional stability of about 60% is obtained at best. The results demonstrate that modification of wood with sol-gel derived precursors can enhance its dimensional stability, which prevents the formation of cracks. Because of that reduced moisture sorption biological attacks should be delimited. Additionally, thermal analyses show a retarded combustion of the wood matrix due to titania infiltration. KW - Titania KW - Sol-gel KW - Nanocomposites KW - Wood protection KW - Water sorption PY - 2010 DO - https://doi.org/10.1007/s10971-009-2107-y SN - 0928-0707 SN - 1573-4846 VL - 53 IS - 2 SP - 384 EP - 389 PB - Kluwer Academic Publ. CY - Dordrecht AN - OPUS4-20892 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -