摘要
木材热处理目前是木材物理改性领域的一个研究热点,也是产业应用较为成功的一种木材改性方法。木材经过热处理后,尺寸稳定性与生物耐久性都获得了提高,材色也明显加深,
Mongolian oak wood were thermally treated in atmospheric steam or 0.35 MPa pressurized steam.Chemical component changes of the treated samples were investigated by means of wet chemical analysis,elemental analysis and FTIR analysis.The results showed that,along with higher lignin and extractive contents,samples treated in pressurized steam exhibited lower holocellulose and moisture content compared with those treated in atmospheric steam.The analyses also suggested greater chemical structure changes in pressurized-steam-treated samples.Meanwhile,it could be determined that thermal degradation of both samples was modest at the treatment temperature of 185 ℃.These findings help explain the better dimensional stability and limited strength deterioration of wood treated in pressurized steam.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2012年第12期148-152,共5页
Scientia Silvae Sinicae
基金
江苏高校优势学科建设工程资助项目
关键词
木材热处理
加压蒸汽
化学组分变化
wood heat treatment
pressurized steam
chemical component