| Study on Surface Wettability of Wheat Straw |
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| 作者姓名： | ZHANG YangNanjing Forestry University Nanjing P.R.China |
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| 作者单位： | ZHANG YangNanjing Forestry University，Nanjing 210037，P.R.China |
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| 基金项目： | This study is supported by the Project for Six Main Top Talents in Jiangsu Province under Contract Number 013020008, namely acomposite manufacturing technique from bio-mass resource(rice and wheat straw). |
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| 摘 要： | INTRODUCTIONSome scientists and specialists think that agriculturalresidues are the second forest resource in China.Straw boards use the agricultural residues, such aswheat straw, rice straw and so on, as main rawmaterial, which are one-year-growth plants and veryrich in China. Producing straw boards can increasewood resource and decrease consumption of wood(Zhou Dingguo, et al, 2000).Wetting is a term to describe what happens when aliquid meets with a solid surface. The surface contact…
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| 关 键 词： | 小麦 麦杆 可湿性 UF MDI |
Study on Surface Wettability of Wheat Straw |
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| ZHANG YangNanjing Forestry University,Nanjing ,P.R.China.Study on Surface Wettability of Wheat Straw[J].中国林业科技(英文版),2005,4(3):53-57. |
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| Authors: | ZHANG Yang |
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| Institution: | Nanjing Forestry University. Nanjing 210037. P.R. China |
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| Abstract: | The surface contact angle and the free energy reflect the wettability of wheat straw, which has agreat influence on the bonding strength of wheat straw panels. The objective of this study was to investigatethe surface contact angle and free energy of wheat straw. The surface contact angles of methane diisocyanate(MDI), urea-formaldehyde (UF), a mixture of MDI and UF on the different parts of wheat straw were tested,and the surface free energy of wheat straw was reckoned by testing the contact angle. The result shows thatthe surface free energy of wheat straw is low, and there are some differences in the cross and longitudinaldirection of wheat straw. Compared with UF, MDI has a better wettability on wheat straw. |
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| Keywords: | wheat straw contact angle free energy wettability |
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