Increased dimensional stability of Chinese fir through steam-heat treatment

被引：11

作者：

Cao, Yongjian ^{[1
,2
]}

Lu, Jianxiong ^{[1
]}

Huang, Rongfeng ^{[1
]}

Jiang, Jiali ^{[1
]}

机构：

[1] Chinese Acad Forestry, Res Inst Wood Ind, Key Lab & Wood Sci & Technol State Forestry Adm, Beijing 100091, Peoples R China

[2] Univ New Brunswick, Fac Forestry & Environm Management, Wood Sci & Technol Ctr, Fredericton, NB E3C 2G6, Canada

来源：

EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS | 2012年 / 70卷 / 04期

基金：

中国国家自然科学基金;

关键词：

MECHANICAL-PROPERTIES; WOOD;

D O I：

10.1007/s00107-011-0570-y

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Chinese Fir is one of the most commonly planted tree species in China. As a fast-growing species, the main drawback is dimensional instability, which limits its applications. Steam-heat treatment is one of the effective methods to improve the dimensional stability of wood. Heartwood and sapwood of Chinese fir were treated using thermal modification with steam that was used as a heating medium and a shielding gas at temperatures ranging from 170 to 230A degrees C and length of time from 1 to 5 hours in an airtight chamber with an atmosphere comprising less than 2 per cent of oxygen. The effect of steam-heat treatment on anti-shrink efficiency and anti-swelling efficiency were examined. The results indicated that the dimensional stability of the wood was increased by 73% for heartwood and 71% for sapwood at 230A degrees C for 5 hours, respectively.

引用

页码：441 / 444

页数：4

共 14 条

[1] Effect of high temperature on the change in color, dimensional stability and mechanical properties of spruce wood [J].