Vertical densification gradient of <em>Populus deltoides</em> lumber with vertical density profile （VDP） technology

XU Xin-wu; CUI Yue; TANG Zheng-jie

doi:10.11833/j.issn.2095-0756.2010.05.027

Volume 27 Issue 5

Oct. 2010

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XU Xin-wu, CUI Yue, TANG Zheng-jie. Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology[J]. Journal of Zhejiang A&F University, 2010, 27(5): 799-802. doi: 10.11833/j.issn.2095-0756.2010.05.027

Citation:

XU Xin-wu, CUI Yue, TANG Zheng-jie. Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology[J]. Journal of Zhejiang A&F University, 2010, 27(5): 799-802. doi: 10.11833/j.issn.2095-0756.2010.05.027

Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

doi: 10.11833/j.issn.2095-0756.2010.05.027

1.
College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

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Corresponding author: XU Xin-wu
Publish Date: 2010-10-20

Abstract

Plantation wood，as a potential substitute for naturally grown wood used in flooring or furniture manufacture，is normally characterized by low-density and low-hardness，which compression can improve. To accurately locate and quantify the compression rate （CR） of Populus deltoides （poplar） lumber at each micro-layer of densified fast-growing wood，vertical density profile （VDP） technology was introduced. The 12 mm thick，fast-growing poplar lumber was compressed under 1 MPa at 100 ℃ for 2，3，and 5 min. Corresponding VDP data were transformed into CR data following a deduced mathematical equation and then graphically analyzed. Results showed that the compression rate distribution （CRD），having a V-shaped curve，was similar to VDP with a maximum surface CR of 34% － 37%. Meanwhile，the thickness in a core showed no great compression. Overall，VDP technology precisely quantified the different compression rates for different micro-layers of P. deltoides lumber.［Ch，4 fig. 7 ref.］
- forest engineering,
- Populus deltoides,
- fast-growing wood,
- densification,
- vertical density profile

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: XU Xin-wu

Publish Date: 2010-10-20

Key words:

Abstract: Plantation wood，as a potential substitute for naturally grown wood used in flooring or furniture manufacture，is normally characterized by low-density and low-hardness，which compression can improve. To accurately locate and quantify the compression rate （CR） of Populus deltoides （poplar） lumber at each micro-layer of densified fast-growing wood，vertical density profile （VDP） technology was introduced. The 12 mm thick，fast-growing poplar lumber was compressed under 1 MPa at 100 ℃ for 2，3，and 5 min. Corresponding VDP data were transformed into CR data following a deduced mathematical equation and then graphically analyzed. Results showed that the compression rate distribution （CRD），having a V-shaped curve，was similar to VDP with a maximum surface CR of 34% － 37%. Meanwhile，the thickness in a core showed no great compression. Overall，VDP technology precisely quantified the different compression rates for different micro-layers of P. deltoides lumber.［Ch，4 fig. 7 ref.］

Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

doi: 10.11833/j.issn.2095-0756.2010.05.027

Abstract

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通讯作者: 陈斌, bchen63@163.com

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Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

doi: 10.11833/j.issn.2095-0756.2010.05.027

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: XU Xin-wu

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Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

doi: 10.11833/j.issn.2095-0756.2010.05.027

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通讯作者: 陈斌, bchen63@163.com

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Vertical densification gradient of Populus deltoides lumber with vertical density profile （VDP） technology

doi: 10.11833/j.issn.2095-0756.2010.05.027

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: XU Xin-wu

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