摘要
为了考察木纤维的表面特性,通过测取接触角和计算回归相结合的方法,研究了木纤维的表面张力以及在不同温度下的变化趋势.结果表明:在25℃时,杉木、杨木和竹木纤维表面张力分别为46.75、40.01和31.01 mJ/m2.经高温处理后,杨木纤维和竹木纤维的下降幅度较大,分别下降了16.39%和14.16%;而且,木纤维表面张力的极性部分均有较大幅度的下降.表明高温处理后的木纤维更适合制备木塑复合材料.
To study the characteristics of the surface of wood fibers,including the surface tension and its variation at different temperatures,contact angles have been measured and regression has been theoretically calculated.Results show that the surface tension of fir,poplar and bamboo wood fibers at 25 ℃ is 46.75,40.01 and 31.01 mJ/m2,respectively.After high temperature treatment,the surface tension of poplar and bamboo wood fibers drops largely,by 16.39% and 14.16% respectively.Moreover,the polarities of surface tension of wood fibers decline greatly,which indicates that wood fibers after high temperature treatment are more suitable for preparation of wood-plastic composites.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2010年第2期181-185,共5页
Journal of Tianjin University(Science and Technology)
基金
天津市科技计划资助项目(07ZCKFSH02200)
关键词
木塑复合材料
木纤维
表面张力
wood-plastic composites
wood fiber
surface tension
