杉木间伐材压缩密化利用的研究

应用生态学报 ›› 2005, Vol. 16 ›› Issue (12): 2306-2310.

杉木间伐材压缩密化利用的研究

陈瑞英, 魏萍, 刘景宏

福建农林大学林料工程学院, 福州 350002

收稿日期:2005-08-12 修回日期:2005-10-11 出版日期:2005-12-15 发布日期:2005-12-15
通讯作者: 陈瑞英
基金资助:
国家自然科学基金资助项目(30271057).

Utilization of compressed Chinese fir thinning wood

CHEN Ruiying, WEI Ping, LIU Jinghong

Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received:2005-08-12 Revised:2005-10-11 Online:2005-12-15 Published:2005-12-15

摘要/Abstract

摘要： 以杉木间伐材为原料,通过对压缩密化处理材的物理力学性能指标测定、处理材的微观结构的变化和红外光谱分析,得到了本试验条件下的杉木间伐材压缩密化处理的优化工艺.结果表明,采用CH蒸煮添加剂软化效果好,具有环保性;最佳工艺条件为压缩率0%～60%、压缩后的厚度20 mm、压缩前的含水率0%、压缩时间20～30 min、热压温度180～200 ℃;处理材厚度吸湿回复率为2.68%,尺寸稳定性好,物理力学性能明显提高,可以与优良硬杂木(光皮桦)相媲美.处理材的微观结构只是细胞被挤压,细胞腔变小细胞壁未受到破坏.

关键词: 杉木间伐材, 压缩密化, 物理力学性能, 微观结构

Abstract: With Chinese fir thinnings as raw material,and through measuring the physical-mechanical indices of its compressed wood,observing the variation of its microstructure and using IR analysis,an optimized technique of compressing Chinese fir thinnings was established.The technique was: compression ratio 50%～60%,thickness after compression 20 mm,moisture content before compression 50%,compressing time 20～30 minutes,and hot compressing temperature 180～200 ℃.CH,an environmentally friendly cooking additive,had positive effects on softening the wood.During compressing,only the cells of fast-growing Chinese fir were extruded,their cavity became smaller,while the cell wall was not destroyed.The thickness reversion ratio of compressed wood was 2.68%,and its size stability and mechanical quality were as good as hardwoods (Betula luminifera).

Key words: Chinese fir thinning wood, Compression, Physical-mechanical quality, Microstructure

中图分类号:

S783

陈瑞英, 魏萍, 刘景宏. 杉木间伐材压缩密化利用的研究[J]. 应用生态学报, 2005, 16(12): 2306-2310.

CHEN Ruiying, WEI Ping, LIU Jinghong . Utilization of compressed Chinese fir thinning wood[J]. Chinese Journal of Applied Ecology, 2005, 16(12): 2306-2310.

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