| Study on Impacts of pH Value on Paulownia Wood Color |
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| 作者姓名： | CHANG Delong SONG Zhanqian HU Weihua HUANG WenhaoLI Fuhai ZHANG Yunling. Paulownia Research Center of China Zhengzhou P.R.China. Research Institute of Chemical Processing and Utilization of Forest Productsof Chinese Academy of Forestry Nanjing P.R.China |
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| 作者单位： | CHANG Delong1 SONG Zhanqian 2 HU Weihua1 HUANG Wenhao1LI Fuhai1 ZHANG Yunling11. Paulownia Research Center of China，Zhengzhou 450003，P.R.China2. Research Institute of Chemical Processing and Utilization of Forest Productsof Chinese Academy of Forestry，Nanjing 210042，P.R.China |
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| 摘 要： | INTRODUCTIONPaulownia is one of important species with fastgrowth and high yield oriented to industry uses inChina, paulownia wood is widely used in furniture-making, decorating materials, musical instrumentsmanufacture (Jiang Jianping 1990), etc. Brown orblack stain often appears on the surface of paulowniawood during processing and using. Discolorationseriously affects paulownia utilization, and it cancause huge loss due to low grade and price causedby stain (Cheng Junqing 1983a, 1983b…
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| 关 键 词： | 泡桐 木材 脱色处理 工艺性能 |
Study on Impacts of pH Value on Paulownia Wood Color |
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| CHANG Delong SONG Zhanqian HU Weihua HUANG WenhaoLI Fuhai ZHANG Yunling. Paulownia Research Center of China,Zhengzhou ,P.R.China. Research Institute of Chemical Processing and Utilization of Forest Productsof Chinese Academy of Forestry,Nanjing ,P.R.China.Study on Impacts of pH Value on Paulownia Wood Color[J].中国林业科技(英文版),2006,5(1):1-7. |
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| Authors: | CHANG Delong SONG Zhanqian HU Weihua HUANG Wenhao LI Fuhai ZHANG Yunling |
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| Institution: | [1]Paulownia Research Center of China,Zhengzhou 450003,P.R.China [2]Research Institute of Chemical Processing and Utilization of Forest Products of Chinese Academy of Forestry,Nanjing 210042,P.R.China |
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| Abstract: | Impacts of acid and alkali on paulownia wood are studied, and the effects of weak alkali solutionon stain prevention of paulownia wood are tested and analyzed. It shows that pH value affects paulowniawood color, and that white value of paulownia wood is prone to decrease and chromatism rises underacidity condition. Under alkalescence condition, whiteness of paulownia wood rises and chromatismdecreases, color and luster obviously tend to be bright. The alkali solution with concentration of 0.25% canpromote the penetrability of paulownia wood, dissolve some extractives containing stain precursor chemicals,strengthen stain prevention of paulownia wood, but can not contaminate board surface. Anti-stain reagenthas effect on prevention stain of paulownia wood, but only using it for controlling paulownia wood stainwill induce stain-returning phenomenon. Using both weak alkali solution and anti-stain reagent has bettereffect than just using reagent, the treatment by concentration of 0.25% weak alkali solution with anti-stainreagent can make controlling effect even both inside and outside. |
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| Keywords: | paulownia wood anti-stain decolor |
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