| 固化干燥条件对CCA-C处理(北美)红松和南洋松木材的固化速度和流失特性的影响(英文) |
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| 引用本文： | 郭爱龙,P.A.Cper,T.Y.Ung.固化干燥条件对CCA-C处理(北美)红松和南洋松木材的固化速度和流失特性的影响(英文)[J].中国林学,2001,3(1). |
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| 作者姓名： | 郭爱龙 P.A.Cper T.Y.Ung |
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| 作者单位： | 1. 内蒙古农业大学,呼和浩特,0l0019
2. 加拿大多伦多大学林学院 |
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| 摘 要： | 该文使用 6 4kg·m-3 的CCA C木材防腐剂 ,在 11个后处理基准 (其温度为 5 0℃～ 70℃和 5个不同的相对湿度 )条件下 ,研究了固化干燥条件对处理北美红松和南洋松木材的固化速度和化学元素的流失的影响 .实验样品内的液体通过挤压方法被定期检测并分析其六价铬的含量 .调节固化后的样品按美国木材防腐协会E11 97标准进行流失实验 .一般情况下 ,对于大多数基准 ,红松固化比南洋松少、快 ,并且高温高湿的固化条件比低湿度的固化条件导致较快的固化速度和较少的铬和砷的流失 .对于2个材种在 11个固化干燥条件下 ,铜元素的流失没有很大的差异 .所有的CCA化学元素的流失情况 ,红松比南洋松更明显 .更进一步的工作需要CCA处理大尺寸样品 ,优化干湿球温度差 ,以便考察其固化干燥条件对流失的影响
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| 关 键 词： | CCA-C 固化 流失 红松 南洋松 后处理基准 |
Effects of Fixation Drying Conditions on Fixation Rate and Leachability in CCA-C Treated Red Pine and Southern Pine |
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| Guo AiLong,P.A.Cper,T.Y.Ung.Effects of Fixation Drying Conditions on Fixation Rate and Leachability in CCA-C Treated Red Pine and Southern Pine[J].Forestry Studies in China,2001,3(1). |
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| Authors: | Guo AiLong PACper TYUng |
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| Institution: | Guo Ailong * P. A. Cooper T. Y. Ung Guo Ailong.Visiting scientist,Faculty of Forestry,University of Toron to P. A. Cooper,T. Y. Ung.Associate professor and research associate in the Faculty of Forestry,University of Toronto |
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| Abstract: | The effects of fixation drying conditions on fixation rates and chemical leachability were investigat ed with CCA-C treated red pine (Pinus koraiensis Sieb. )and southern pine specimens at a retention of 6.4 kg@-3m , and under 11 post-treatment schedules ranging from 50 ～ 70°C and 5 different relative humidity conditions.These samples were monitored by expressing residual liquid and analyzing it for hexavatent chromium content.Samples were subjected to AWPA E11-97 (AWPA 1997) standard leaching tests after fixation. Generally, red pine fixed slightly faster than southern pine for most fixation conditions. High temperature, high humidity, fixation conditions during the fixation/drying schedules resulted in faster fixation and lower leaching of chromium and ar senic elements compared to low humidity conditions. Copper leaching showed no significant difference under 11 fixation /drying conditions for both species. All of the CCA components were leached significantly more in red pine than southern pine. Further work is needed to examine the effects of different fixation/drying conditions on leach ing from full-size samples and to optimize dry/wet bulb depression for fixation/drying of CCA treated lumber. |
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| Keywords: | CCA-C fixation leaching red pine southern pine post-treatment schedule |
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