用热压干燥法干燥的速生柳杉材的抗弯强度研究

doi:10.16036/j.issn.1000-2650.1997.02.017

四川农业大学学报 ›› 1997, Vol. 15 ›› Issue (02): 233-235.doi: 10.16036/j.issn.1000-2650.1997.02.017

用热压干燥法干燥的速生柳杉材的抗弯强度研究

唐君畏

四川农业大学林学园艺学院, 雅安市 625014

收稿日期:1996-10-23 出版日期:1997-06-30 发布日期:2017-03-07

BENDING STRENGTH OF PRESS-DRIED PLANTATION CRYPTOMERIA FORTUNEI

Tang Junwei

College of Forestry and Horticulture, Sichuan Agricultural University/Yaan, Sichuan, China 625014

Received:1996-10-23 Online:1997-06-30 Published:2017-03-07

摘要/Abstract

摘要： 本文叙述了用我们研制的木材电热热压干燥装置干燥柳杉(Cryptomeria fortunei)小径材板材,当板厚为25mm,最高温度为170℃,压力0.2MPa,时间70分钟,终含水率10%的试材同温度为60℃,时间为120小时干燥的窑干材相比,抗弯强度与弹性模量分别减少了5.4%和6.5%,而厚度干缩率和密度分别增加了1.3%和1.8%,但统计上均无显著差异。宽度干缩率减小67.9%,差异显著。

关键词: 热压干燥, 柳杉[49GG], 抗弯强度[31DA, 56A], 干缩率[83AB], 干燥[83AB]

Abstract: 25mm-thick platation Cryptomeria fortunei press-dried at 170℃, 0.2 MPa for 70 minvtes were Compared to those of kilndried at 60℃ for 120 hours, and modulus of rupture and modulus of elasticity decreased 5.4 and 6.5 percent, repectively, thickness shrinkage and specific gravity increased 1.3 and 1.8 percent respectively;however the difference was not statistically significant, and width shrinkage decreased 67.9 percent, the difference was statistically significant.

Key words: PRESS-DRYING, CRYPTOMERIA FORTUNEI, FLEXURAL STRENGTH, SHRINKAGE, DRYING

中图分类号:

S781.21

唐君畏. 用热压干燥法干燥的速生柳杉材的抗弯强度研究[J]. 四川农业大学学报, 1997, 15(02): 233-235.

Tang Junwei. BENDING STRENGTH OF PRESS-DRIED PLANTATION CRYPTOMERIA FORTUNEI[J]. jsau, 1997, 15(02): 233-235.

用热压干燥法干燥的速生柳杉材的抗弯强度研究

BENDING STRENGTH OF PRESS-DRIED PLANTATION CRYPTOMERIA FORTUNEI

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