Effect of Modification with Phenol Formaldehyde Resin on the Mechanical Properties of Wood from Chinese Fir

被引：0

作者：

Huang, Yanhui ^{[1
]}

Fei, Benhua ^{[1
]}

Yu, Yan ^{[1
]}

Zhao, Rongjun ^{[2
]}

机构：

[1] Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China

[2] Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

来源：

BIORESOURCES | 2013年 / 8卷 / 01期

关键词：

Phenol-formaldehyde resin; Mechanical properties; Cell wall; Modulus of elasticity; Hardness; CELL-WALLS; ADHESIVE PENETRATION; SPRUCE WOOD; MELAMINE; NANOINDENTATION; MICROSCOPY;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Samples of Chinese fir were treated with either low-molecular-weight or commercial phenol-formaldehyde (PF) resins. The macro- and micromechanical properties of the treated and untreated samples were determined. The average longitudinal tensile modulus of elasticity (MOE) was 30.88% larger for the samples treated with the low-molecular-weight PF resin than it was for the untreated samples. The average MOE of the samples treated with the commercial PF resin was 29.84% less than that of the untreated samples. The micromechanical properties of the samples were investigated through nanoindentation studies. For the samples modified with low-molecular-weight PF resin, the values of average MOE and hardness were 32.94 and 32.93%, respectively, greater than those of the untreated samples. In contrast, the average MOE and hardness values were 11.99 and 18.14%, respectively, greater for the samples modified with commercial PF resin compared to the untreated samples. It could be inferred that the low-molecular-weight PF resin was able to diffuse into the nanopores in the S-2 layer of the tracheid cell wall of the Chinese fir, thereby improving its macromechanical properties. Modification with low-molecular-weight PF resin was an effective way to enhance the longitudinal macromechanical properties of wood from the Chinese fir.

引用

页码：272 / 282

页数：11

共 23 条

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