浸水複合媒材的保存修護：以二階段聚乙二醇浸泡+真空冷凍乾燥法進行二件英國倫敦泰晤士河出土木柄鐵鋸的修護為例

隨著越來越多的水下遺址考古發掘活動，歷年來文物修護界也陸續發展出許多浸水木質文物的保存技術，聚乙二醇（polyethylene glycol，簡稱PEG）往往被視為保存浸水木質文物的標準修護用材：其中，又以聚乙二醇浸泡法(PEG impregnation)最為廣泛應用。本文以筆者過去執行的二件英國泰晤士河出土木柄鐵鋸修護案為例，探討在面對浸水複合媒材(waterlogged composites)的保存修護時，如何應用「二階段聚乙二醇浸泡+真空冷凍乾燥法」標準技術來保存浸水木質文物之外，關於其金屬複合物所需添加之防鏽劑亦是本文討論重點。

關鍵字

聚乙二醇；浸水文物；複合媒材；防鏽劑

並列摘要

Various methods have been studied to treat waterlogged wood. Currently, the application of polyethylene glycol (PEG) is generally agreed to be the standard treatment. Two waterlogged wood-iron composite saws were found along the foreshore of the River Thames and were brought to the Museum of London for treatment. This paper presents the conservation processes from pre-PEG to post-PEG treatment. The aim of treatment was to stabilise the two saws by impregnation in a PEG solution, followed by freeze-drying. The use of corrosion inhibitors triethanolamine and ETX 6282 (Texaco) is also discussed.

並列關鍵字

PEG ； waterlogged object ； composites ； corrosion inhibitor

參考文獻

Argyropoulos, V.,Rameau, J. J.,Dalard, F.,Degrigny, C.(1999).Testing Hostacor IT as Corrosion Inhibitor for Iron in Polyethylene Glycol Solutions.Studies in Conservation.44,49-57.

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