The keel - from impregnation freeze promotional products drying in shape to Current Conservation
After we had made the reconstruction of the hull form, we know the shape of the keel and work to dry it can get started. The keel is in 8 parts and components have been for impregnating an aqueous solution of PEG 2000 since we received them on the Conservation Department in Brede in 1999. PEG - polyethylene glycol - is a water-soluble, synthetic preservative system promotional products that is reminiscent of wax. It is produced by several different molecular sizes - PEG of high molecular weight is solid at room temperature and not very sensitive to varying humidity. Conversely, PEG having small molecular weight (e.g., 200) completely liquid at room temperature and very hygroscopic. We use PEG 2000 which is solid at room temperature - it is still easy to dissolve in water and it trenger relatively well into the degraded archaeological wood. PEG has the task of replacing any of the material which has disappeared from the old tree in the period it has been in the ground and become degraded. promotional products It takes a long time to impregnate the wood - from 3 to 10 years, depending on how thick the wood is and how open / degraded structure. Keels have been for almost 9 years and have reached the final concentration of 40% PEG 2000.
Ever since we got the goals for the correct shape of the keel, Lotte, our blacksmith, was started making structures that can maintain promotional products keels in the drying process. promotional products Although the tree is broken, we can risikire the work or settle in the drying process. In addition, we must ensure that the keel get the small curvature as reconstruction work has shown that it has had. It requires a solid setup - in order to provide and maintain the tree in the right shape, but also to avoid distortions during the drying process. At the same time our clamps not leave marks in the wood surface or shade for energy transfer in the drying process. It requires good tilrættelægning - not least because we have to work relatively short time with each piece. Once we have taken a køldel by impregnating liquid, the court quickly into place in its support, tightened up and all loose fragments must be put in place. It is very important that the tree does not start to dry while we design and spanning tree up so we pour regularly PEG and water over - and packages keel portions in plastic as soon as we can get to.
When everything is as it should, lifting keel up on a sled and tighten. When all 8 parts are clamped to the sled and wrapped in plastic, push this into the big freeze drying plant. The temperature is set to - 30 C. We have stung temperature sensors into the wood, these are connected to a data logger so we can see when it's all frozen in and quite stiff. So we draw the sled out, take the plastic of pushes the tree into the tank again and close the door securely. Now it takes about 5 months to again we must get hold of the tree - it is the time it takes to freeze dry keel portions .... All køldele wrapped in plastic promotional products before freezing A look through the window into the keels of freeze drying plant. it is not to see, but the temperature is -25 degrees Celsius and the pressure promotional products is o, 1 mbar - ie full vacuum.
New posts So royal portraits wonder if different, as they finished in Christian V's promotional products reign? The lightship was stolen in the night - April Fool mural from Ferring Church Part 3 Eco-friendly alternatives to plastic materials used in the conservation promotional products of museum objects Renovation of the lightship Gedser Reef
Topics Fire Damage Building Conservation promotional products CO2 Cleaning ENB Researcher in LA Photographs Frihedsmuseet Golden Days Rubber Uncategorized Interior Jelling monuments Fresco Church Furniture Painting promotional products Music Museum Odense Noble Jomfrukloster Plastic Shipworms Amber Travel letters from Rome Ships Castles waterlogged wooden hull structure
Recent comments Anja Liss Petersen promotional products lightship promotional products stolen in the night - April Fool Peter Steen to lightship stolen in the night - April Fool Svend Sandbaek for Renovation of the lightship Gedser Rev Anja Liss Petersen Renovation of the lightship Gedser promotional products Rev Svend Sandbaek for Renovation promotional products of the lightship Gedser Reef
buildings cellulose acetate decoration techniques layers of color gilding uncovering Lightship Getty Conservation Institute crafts ICCROM Italy Fresco Church Church Furniture churches conservator preservation LA Los Angeles Marble marbling museums degradation Norway surface cleaning of paint plastic plastic Plexiglas PMMA polyester polyethylene polystyrene POPART PVC reconstruction cleaning restoration retouching Rome Røros Røros Church Stone Preservation Wood Viking
The material on this blog belongs promotional products to the National Museum and / or the authors. Current Conservation is running WordPress 128 and K2 Entries (RSS) and Comments (RSS)
After we had made the reconstruction of the hull form, we know the shape of the keel and work to dry it can get started. The keel is in 8 parts and components have been for impregnating an aqueous solution of PEG 2000 since we received them on the Conservation Department in Brede in 1999. PEG - polyethylene glycol - is a water-soluble, synthetic preservative system promotional products that is reminiscent of wax. It is produced by several different molecular sizes - PEG of high molecular weight is solid at room temperature and not very sensitive to varying humidity. Conversely, PEG having small molecular weight (e.g., 200) completely liquid at room temperature and very hygroscopic. We use PEG 2000 which is solid at room temperature - it is still easy to dissolve in water and it trenger relatively well into the degraded archaeological wood. PEG has the task of replacing any of the material which has disappeared from the old tree in the period it has been in the ground and become degraded. promotional products It takes a long time to impregnate the wood - from 3 to 10 years, depending on how thick the wood is and how open / degraded structure. Keels have been for almost 9 years and have reached the final concentration of 40% PEG 2000.
Ever since we got the goals for the correct shape of the keel, Lotte, our blacksmith, was started making structures that can maintain promotional products keels in the drying process. promotional products Although the tree is broken, we can risikire the work or settle in the drying process. In addition, we must ensure that the keel get the small curvature as reconstruction work has shown that it has had. It requires a solid setup - in order to provide and maintain the tree in the right shape, but also to avoid distortions during the drying process. At the same time our clamps not leave marks in the wood surface or shade for energy transfer in the drying process. It requires good tilrættelægning - not least because we have to work relatively short time with each piece. Once we have taken a køldel by impregnating liquid, the court quickly into place in its support, tightened up and all loose fragments must be put in place. It is very important that the tree does not start to dry while we design and spanning tree up so we pour regularly PEG and water over - and packages keel portions in plastic as soon as we can get to.
When everything is as it should, lifting keel up on a sled and tighten. When all 8 parts are clamped to the sled and wrapped in plastic, push this into the big freeze drying plant. The temperature is set to - 30 C. We have stung temperature sensors into the wood, these are connected to a data logger so we can see when it's all frozen in and quite stiff. So we draw the sled out, take the plastic of pushes the tree into the tank again and close the door securely. Now it takes about 5 months to again we must get hold of the tree - it is the time it takes to freeze dry keel portions .... All køldele wrapped in plastic promotional products before freezing A look through the window into the keels of freeze drying plant. it is not to see, but the temperature is -25 degrees Celsius and the pressure promotional products is o, 1 mbar - ie full vacuum.
New posts So royal portraits wonder if different, as they finished in Christian V's promotional products reign? The lightship was stolen in the night - April Fool mural from Ferring Church Part 3 Eco-friendly alternatives to plastic materials used in the conservation promotional products of museum objects Renovation of the lightship Gedser Reef
Topics Fire Damage Building Conservation promotional products CO2 Cleaning ENB Researcher in LA Photographs Frihedsmuseet Golden Days Rubber Uncategorized Interior Jelling monuments Fresco Church Furniture Painting promotional products Music Museum Odense Noble Jomfrukloster Plastic Shipworms Amber Travel letters from Rome Ships Castles waterlogged wooden hull structure
Recent comments Anja Liss Petersen promotional products lightship promotional products stolen in the night - April Fool Peter Steen to lightship stolen in the night - April Fool Svend Sandbaek for Renovation of the lightship Gedser Rev Anja Liss Petersen Renovation of the lightship Gedser promotional products Rev Svend Sandbaek for Renovation promotional products of the lightship Gedser Reef
buildings cellulose acetate decoration techniques layers of color gilding uncovering Lightship Getty Conservation Institute crafts ICCROM Italy Fresco Church Church Furniture churches conservator preservation LA Los Angeles Marble marbling museums degradation Norway surface cleaning of paint plastic plastic Plexiglas PMMA polyester polyethylene polystyrene POPART PVC reconstruction cleaning restoration retouching Rome Røros Røros Church Stone Preservation Wood Viking
The material on this blog belongs promotional products to the National Museum and / or the authors. Current Conservation is running WordPress 128 and K2 Entries (RSS) and Comments (RSS)
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