二氧化硅改性处理桉树生材的材性分析

张钰雯; 符韵林

doi:10.19455/j.mcgy.2015.01.004

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二氧化硅改性处理桉树生材的材性分析
Properties of Green Eucalyptus Modified with Silicon Dioxide
1. 广西大学林学院
2. 广西高校林业科学与工程重点实验室
2015年29卷第1期页码：14-17
DOI： 10.19455/j.mcgy.2015.01.004

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[1]张钰雯,符韵林.二氧化硅改性处理桉树生材的材性分析[J].木材工业,2015,29(01):14-17.

ZHANG Yu-wen, FU Yun-lin. Properties of Green Eucalyptus Modified with Silicon Dioxide[J]. China Wood Industry, 2015,29(1):14-17.
[1]张钰雯,符韵林.二氧化硅改性处理桉树生材的材性分析[J].木材工业,2015,29(01):14-17. DOI： 10.19455/j.mcgy.2015.01.004.

ZHANG Yu-wen, FU Yun-lin. Properties of Green Eucalyptus Modified with Silicon Dioxide[J]. China Wood Industry, 2015,29(1):14-17. DOI： 10.19455/j.mcgy.2015.01.004.

摘要

采用溶胶-凝胶法,对含水率142%,1,46%的速生桉树生材进行改性处理,采用电镜SEM、X-射线能谱仪EDAX及红外光谱FTIR分析,观察木材微观结构和SiO2分布状态,并检测理化性能。结果表明:浸渍时间不同,改性材中的SiO2含量和分布不同;改性材的增重率最大达45%,气干密度可提高至0.6g/cm3左右,抗弯强度、硬度及耐光老化性能等均相应提高。

Abstract

Green eucalyptus from plantation forests was modified by the sol-gel method.Microstructure and silicon dioxide（SiO2）distribution of the samples were evaluated with scanning electron microscopy（SEM）/ energy dispersive X-ray analyzer（EDAX）and Fourier transform infrared（FTIR）and then were tested for physical and chemical properties.The results showed that soaking time had a very important effect on content and distribution of SiO2.Weight percentage gain（WPG）and air dry density of the samples could reach 45% and 0.6 g/cm3,respectively.Bending strength,hardness and light aging resistance of the modified samples were also improved.