| 白蜡杆材的动态热机械分析 |
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| 引用本文： | 刘艳萍1,李江晓2,曾辉3,杨亚峰2. 白蜡杆材的动态热机械分析[J]. 西北林学院学报, 2014, 29(4): 219-221. DOI: doi:10.3969/j.issn.1001-7461.2014.04.39 |
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| 作者姓名： | 刘艳萍1 李江晓2 曾辉3 杨亚峰2 |
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| 作者单位： | （1.河南省林业科学研究院，河南 郑州450008；2.河南农业大学，河南 郑州 450002；3.河南投资集团有限公司，河南 郑州450008） |
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| 摘 要： | 试验材料为6年生白蜡杆材,利用动态热机械分析仪（DMA）测试其不同高度的动态力学性能。结果表明，在试验温度范围内，随着温度的升高白蜡杆材的储能模量呈下降趋势，损耗模量和损耗因子呈“升高—下降—升高—快速下降”的双峰形；且白蜡杆材上部具有较高的刚度和阻尼，玻璃化转变温度为255.84℃，比下部的玻璃化转变温度高7.82℃。综合评价认为，6年生白蜡杆材上部的材性优于中部和下部的。
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| 关 键 词： | 白蜡杆 动态力学性能 动态热机械分析 |
Dynamic Mechanical Analysis of Fraxinus chinensis Wood |
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| LIU Yan-ping1,LI Jiang-xiao2,ZENG Hui3,YANG Ya-feng2. Dynamic Mechanical Analysis of Fraxinus chinensis Wood[J]. Journal of Northwest Forestry University, 2014, 29(4): 219-221. DOI: doi:10.3969/j.issn.1001-7461.2014.04.39 |
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| Authors: | LIU Yan-ping1 LI Jiang-xiao2 ZENG Hui3 YANG Ya-feng2 |
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| Affiliation: | (1. Henan Academy of Forestry, Zhengzhou, Henan 450008, China; 2. Henan Agricultural University, Zhengzhou, Henan 450002, China; 3. Henan Investment Group Limited Company, Zhengzhou , Henan 450008, China) |
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| Abstract: | The dynamic mechanical properties of different heights of six-year-old Fraxinus chinensis wood was examined by dynamic mechanical analysis. The results showed that the storage modulus of the wood decreased with the increase of temperatures, but their loss modulus and loss factors presented double-peak shape. The upper wood had higher rigidity and damping, and its glass transition temperature was 255.84℃, which indicated that the dynamic mechanical properties of upper wood were superior to the lower and middle wood. |
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| Keywords: | Fraxinus chinensis woodFraxinus chinensis wood dynamic mechanical properties dynamic mechanical analysis |
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