摘要
研究了杉木、马尾松木材管胞零距纵向抗拉强度。结果表明,杉木早材管胞纵向抗拉强度介于310MPa～733MPa,平均499MPa;马尾松早材管胞纵向抗拉强度介于300MPa～590MPa,平均461MPa。两个树种的早材管胞纵向抗拉强度在树高方向(1.3m～7.3m)差异不显著,没有明显的变化规律;含水率对早材管胞纵向抗拉强度的影响不显著,但总体趋势是气干态的强度高于饱水态。
The zero-span tensile strength of tracheids of the Chinese-fir and masson-pine were researched.It was shown that the longitudinal tensile strength of early wood tracheids of the Chinese-fir is from 310 to 733 MPa with an average of 499 MPa and tensile strength of masson-pine is from 300 to 590 MPa with an average of 461 MPa;The longitudinal tensile strength of early wood tracheids has no significant variation was observed along tree height from1.3m to7.3m,and no significant variational trend;the effect of moisture content on the tensile strength of tracheids has no significant variation but the strength at air dry state is higher than water saturation state.
出处
《木材加工机械》
2009年第3期9-12,23,共5页
Wood Processing Machinery
基金
国家自然科学基金重点项目(30730076)
关键词
杉木
马尾松
管胞
零距拉伸
抗拉强度
Chinese-fir
masson-pine
tracheids
zero-span
tensile strength
