Application of TGA and EDX Analysis to Evaluate the Process of Preservative-Treated Woods
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概要
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This study investigated the use of TGA under different thermal decomposition conditions (nitrogen or air, and 5 or 40℃/min) to evaluate preservative-treated woods and their preservatives. It also analyzed the residual elements in the char using EDX. Two types of preservative-treated woods were investigated. One impregnated with CCA-3 and the other one treated with ACQ-1 using a full-cell treatment. The results of the TGA showed that the thermal properties of CCA- or ACQ-treated wood were similar to that of untreated wood in either a nitrogen or an air atmosphere, but the pyrolysis temperature for the heating rate of 5℃/min was lower than that of 40℃/min. Regardless of different atmosphere or heating rate, the char of the CCA specimens and the CCA-3 was more than that of the ACQ ones and the ACQ-1. The results of the EDX analysis of both preservative-treated woods show that the main element is C (CCA: 47.96%; ACQ: 50.24%), and that the relative proportion of C (CCA: 60.42%; ACQ: 77.89%) is higher after thermal decomposition. Cr from the char of CCA-3 is a stable element, and the amount of Cr (34.99%) is obviously more than that of As (11.89%) and Cu (16.69%). The char of ACQ-1 left a high amount of inorganic metal elements, such as Cu (50.14%). This suggests that by using EDX to analyze the residual elements in char, the results can provide experimental data for referencing the disposal-end practices (char) of both preservative-treated woods.
- 九州大学の論文
著者
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LIN Han
College of Agriculture, National Chiayi University
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OHUCHI Takeshi
Faculty of Agriculture, Kyushu University
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Lin Han
College Of Agriculture National Chiayi University
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Ohuchi Takeshi
Faculty Of Agriculture Kyushu University
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GU Lan
College of Agriculture, National Chiayi University
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Gu Lan
College Of Agriculture National Chiayi University
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Ouchi Takeshi
Faculty of Agriculture, Kyushu University
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Murase Yasuhide
College of Agriculture, National Chiayi University
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