臭冷杉表面密实化及后期高温热处理工艺

战剑锋; 曹军; 顾继友; 张馨然; 陈伟; 刘卓杰; 刘彬; 马恒建

doi:10.3969/j.issn.1000-2006.2015.03.022

臭冷杉表面密实化及后期高温热处理工艺

战剑锋,曹军,顾继友,张馨然,陈伟,刘卓杰,刘彬,马恒建

南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (03) : 119-124.

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南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (03) : 119-124. DOI: 10.3969/j.issn.1000-2006.2015.03.022

研究论文

臭冷杉表面密实化及后期高温热处理工艺

战剑锋^1,2,曹军²,顾继友¹,张馨然¹,陈伟¹,刘卓杰¹,刘彬¹,马恒建¹

作者信息 +

Surface densification and high temperature hydrothermal post treatment of the Abies nephrolepis lumber

ZHAN Jianfeng^1,2, CAO Jun², GU Jiyou¹, ZHANG Xinran¹, CHEN Wei¹, LIU Zhuojie¹, LIU Bin¹, MA Hengjian¹

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摘要

以35 mm厚臭冷杉气干光边板为试验材料,采用2种厚度压缩率,分别在160、180 ℃的热压温度下进行表面压密化处理; 然后将表面压密材在温度分别为180、200 ℃的热湿环境下进行高温热处理,对表面压密化对比材与高温热处理材试件进行常温浸水处理; 分析了表面压缩率、热压温度、热处理条件等因子对臭冷杉表面压密地板材厚度方向变形恢复的影响。结果表明:在实验所采用的开放热压工艺下,臭冷杉弦切板材的实际压密区位于上、下表面2 mm 处,达到了表面压密强化的目的; 表面压密试件在温度为200 ℃时经高温热处理1 h,其厚度方向变形恢复率为对比材的28.6%; 高温热处理工艺是改善表面压密材尺寸稳定性的有效方法。

Abstract

The objective of this article was to provide theoretical bases for the value-added processing technology of softwood plantation timbers, as well as to develop innovative wooden flooring materials. Abies nephrolepis sapwood lumbers with thickness of 35 mm was surface-densified to two degrees of compression at 160 ℃ and 180 ℃ by using a wooden composites heated press. The densified specimens were then hydrothermally post-treated at 180 ℃ and 200 ℃. To study the influence of the degree of compression, hot-pressing temperature and high-temperature hydrothermal post-treatment on the set-recovery of surface densified floorings, specimens were subjected to water soaking plus oven-drying cycles. The actual influential mechanisms of these factors over the recovery of surface compressive sets were discussed herein. Under these specified hot-pressing technique parameters, the actual densification areas of Abies nephrolepis sapwood lumbers lies two millimeters below wood surfaces and the densification plus reinforcement of flooring surfaces has been achieved accordingly. Being hydrothermally treated at 200 ℃ for one hour, the deformation recovery ratios of surface-densified specimens was just 28.6% of that of control specimens, highlighting that the hydrothermal post-treatment was a efficient technology, which could improve the deformation stability of surface-densified solid wood.

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战剑锋,曹军,顾继友,张馨然,陈伟,刘卓杰,刘彬,马恒建. 臭冷杉表面密实化及后期高温热处理工艺[J]. 南京林业大学学报（自然科学版）. 2015, 39(03): 119-124 https://doi.org/10.3969/j.issn.1000-2006.2015.03.022

ZHAN Jianfeng, CAO Jun, GU Jiyou, ZHANG Xinran, CHEN Wei, LIU Zhuojie, LIU Bin, MA Hengjian. Surface densification and high temperature hydrothermal post treatment of the Abies nephrolepis lumber[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2015, 39(03): 119-124 https://doi.org/10.3969/j.issn.1000-2006.2015.03.022

中图分类号： S781

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基金

收稿日期:2014-03-19 修回日期:2014-06-18
基金项目:中国博士后科学基金项目(2012M510906); 中央高校基本科研业务费专项资金项目(DL13CB17); 东北林业大学大学生创新训练项目
第一作者:战剑锋,副教授,博士。E-mail: zhanjianfeng2002@sina.com.cn。
引文格式:战剑锋,曹军,顾继友,等. 臭冷杉表面密实化及后期高温热处理工艺[J]. 南京林业大学学报:自然科学版,2015,39(3):119-124.