| 摘要: |
| 在了解轻质菱苦土木丝板吸湿性现象产生原因及其常用改善措施的基础上，探讨了以最佳原料摩尔比、添加剂和养护方式3种途径来改善蒸压轻质菱苦土木丝板的吸湿性现象.研究结果表明：MgO/MgCl2摩尔比为5，采用复合型添加剂（铁矾+铝粉+NH4H2PO4），且初期养护采用恒温恒湿处理，对轻质菱苦土木丝板的吸湿性改善效果最好. |
| 关键词: 菱苦土 木丝板 吸湿性 添加剂 静曲强度（MOR） |
| DOI：10.3969/j.issn.1007 9629.2012.05.015 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（31070502）；江苏省苏北科技发展计划项目（BC2012417）；国家高技术研究发展计划（863计划）项目（2012AA03A204）；江苏高校优势学科建设工程资助项目 |
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| Study on Hygroscopicity Improvement of Low DensityMagnesite Bonded Wood Wool Panel |
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NA Bin1, WANG Zhi peng1, WANG Zhi qiang1, HUANG Rong2, SUN Dan dan1, LU Xiao ning1
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1.College of Wood Science and Technology, Nanjing Forestry University, Nanjing 210037, China;2.Library, Nanjing Forestry University, Nanjing 210037, China
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| Abstract: |
| Moisture absorption mechanism of magnesite bonded wood wool panel(MWWP) and measures generally taken to lower its hygroscopicity were reviewed. Three methods were then experimented to improve the dimensional stability of the panel, including adjustment of the molar ratio of raw materials, addition of additives and optimization of the curing method. The results show that satisfying dimensional stability can be achieved when the molar ratio of MgO to MgCl2 is 5︰1, the No.2 composite additive(aluminum powder+NH4H2PO4 +ferric alum) is used and a constant temperature and humidity treatment is applied in the first stage of conditioning. |
| Key words: magnesite wood wool panel hygroscopicity addition agent modulus of rupture(MOR) |
