摘要
在液滴形状法的理论基础上．根据Young．Laplace方程．利用矢量化技术．测定和计算了单根芳纶纤维的表面接触角为53.3°；考察了N，N-二甲基甲酰胺（DMF）、N，N-二甲基乙酰胺（DMAc）、二甲苯和二甲基亚砜（DMSO）等化学试剂处理对芳纶单根纤维表面接触角的影响．并将其结果应用于芳纶纤维在水介质中的均匀分散。考察化学预处理对芳纶纤维成纸匀度的影响．获得接触角与芳纶纤维分散性之间的关系。研究结果表明：通过编写程序计算单根纤维表面接触角简单可行，可有效地表征单根纤维0-90°的接触角；经过适当的有机溶剂处理，芳纶纤维表面接触角有减小的空间．可以提高纤维在水相中的分散效果．改善芳纶纤维湿法成纸匀度。
With the basic theory of droplet profile method and the Young-Laplace equation, the contact angle of single fiber were determined by using C^＋＋ language programme, vector and AutoCAD software. The contact angle of single aramid fiber was 53.3°, which indicates the higher hydrophobic property of the aramid fiber. The effects of various organic solvents on the contact angle of aramid fiber were investigated by treating the surface of aramid fiber in a short time. The chemicals such as N, N-dimethyl formamide （DMF）, N, N-dimethyl acetamide （DMAc）, 2-toluene, dimethyl sulphoxide （DMSO）, and so on were applied. The contact angle of the single fiber was able to decrease by the solvent treating,which could be applied to the dispersion of aramid fiber in water for aramid sheet making. The results showed that the lower contact angle of fiber gained by solvent treating, the better formation of the sheet was achieved.
出处
《纸和造纸》
北大核心
2009年第5期29-32,共4页
Paper and Paper Making
关键词
接触角
单根纤维
液滴形状法
分散
芳纶纤维
contact angle
single fiber
droplet profile method
dispersion
aramid fiber
