| 摘要: |
| 以马尾松（Pinus massoniana）为研究对象，分别在 180， 200， 220 ℃条件下对其进行水蒸气
热处理 1， 3， 5 h。借助干燥器法测试不同温度热处理材的甲醛吸附量变化，利用程序升温化学吸附法、
比表面积测试以及表面接触角方法探索不同温度处理的热处理材表面特性的变化规律。结果表明：与未
热处理的素材相比，（1）热处理后的木材甲醛吸附性能得到改善，经 180 ℃、 1 h 处理后的木材甲醛吸附
性能最好，且随处理温度升高、时间延长，甲醛吸附性能降低，总体呈降低趋势；（2）热处理木材对甲
醛的吸附不仅是物理吸附，还存在化学吸附；（3）不同温度处理后，木材的比表面积均减小；（4）经热
处理后，极性的蒸馏水在木材表面的接触角较素材大且热处理的温度越高、表面接触角越大，而非极性
的二碘甲烷在其表面的接触角变化趋势相反。 |
| 关键词: 热处理木材 甲醛吸附 比表面积 表面接触角 |
| DOI： |
| 分类号: |
| 基金项目:广东省省级科技计划项目“热处理木材霉变机制及预防处理技术的研究”(2014A040401043) |
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| Study on the Surface Characteristics of Pinus massoniana Heat-treated Wood |
|
Xie Guijun,LI Lamei and Li Xingwei
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(Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry,(Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry,(Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry
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| Abstract: |
| The Pinus massoniana was studied by steam heat treatment at 180, 200, 220 ℃ for 1, 3, 5 h, respectively.
Using dryer method to test the change of formaldehyde adsorption of different temperature heat-treated wood and
using temperature programmed chemical adsorption, surface contact angle and surface testing method to explore
the changing laws of heat treated wood surface characteristics that treated different temperature treatment. The
results showed that: compared with non-heat treatment meterials, (1) the formaldehyde adsorption performance
was improved after heat treatment, and when P. massoniana were treated at 180 ℃ for 1h, the formaldehyde adsorption
performance was best, and with the extension of processing temperature and time, the formaldehyde adsorption
performance showed a trend of decrease overall; (2) the adsorption of formaldehyde by heat treatment wood
was not only physical adsorption, but also chemical adsorption; (3) after treatment of different temperature, the
wood’ s surface area decreased; (4) after heat treatment, the surface contact angle of polar distilled water on the
wood surface was larger than the untreated material, and the higher the temperature of heat treatment, the greater
the contact angle on its surface, while the surface contact angle of non-polar diiodomethane on the wood surface
had the opposite trend. |
| Key words: heat-treated wood formaldehyde adsorption specific surface area surface contact angle |
