Dispersion and Interface Characteristics of Nano-TiO_2 Based Wood Preservatives  

作　　者：Wang Min Wu Yiqiang Hu Yunchu Zhang Xinli Yang Shoulu 

机构地区：[1]School of Materials Science and Engineering,Central South Universitly of Forestry & Technology [2]Hunan Provincial Engineering Research Center of Bamboo Industry

出　　处：《Chinese Forestry Science and Technology》2012年第3期72-72,共1页中国林业科技（英文版）

摘　　要：The key problems of preparing water-based nano TiO₂ wood preservatives are the particle’s agglomeration and dispersion.The influences of adding titanate NDZ-105 and sodium hexamet aphosphate on transmittance,effects of dispersion modification on crystal type,distribution and interface characteristics of modified TiO₂ in wood were studied by photometric,XRD,SEM and FTIR analysis,respectively.The results show that the dispersion of nano TiO₂ suspension firstly increased, then decreased as the amount of the two kinds of dispersed agent increased,when addition amount of titanate N DZ-105,six partial sodium were separately 5%and 3%-5%,the nano TiO₂ wood preservatives were obtained that their dispersive property were stabilized.After dispersion modification,the TiO₂ maintained the crystal diffraction characteristics of anatase;the nano TiO₂ distributed in wood successfully,showing a granule or ball-shaped,and the hydrogen bond and covalent bond were combined between wood and nano-TiO₂,but only hydrogen bond was combined between wood cellulose and IPBC.The key problems of preparing water-based nano TiO₂ wood preservatives are the particle’s agglomeration and dispersion.The influences of adding titanate NDZ-105 and sodium hexamet aphosphate on transmittance,effects of dispersion modification on crystal type,distribution and interface characteristics of modified TiO₂ in wood were studied by photometric,XRD,SEM and FTIR analysis,respectively.The results show that the dispersion of nano TiO₂ suspension firstly increased, then decreased as the amount of the two kinds of dispersed agent increased,when addition amount of titanate N DZ-105,six partial sodium were separately 5%and 3%-5%,the nano TiO₂ wood preservatives were obtained that their dispersive property were stabilized.After dispersion modification,the TiO₂ maintained the crystal diffraction characteristics of anatase;the nano TiO₂ distributed in wood successfully,showing a granule or ball-shaped,and the hydrogen bond and covalent bond were combined between wood and nano-TiO₂,but only hydrogen bond was combined between wood cellulose and IPBC.

关 键 词：NANOMETER TiO₂ WOOD PRESERVATIVE coupling agent DISPERSION CHARACTERISTICS interface CHARACTERISTICS 

分 类 号：S7[农业科学—林学]