摘要
土壤对固体材料的粘附力包括分子引力、独立水环引力和水膜粘滞力。利用Lifishitz宏观物体间分子作用理论推导出土壤粘附的分子引力;从土壤粘附系统能量出发,推导出土壤粘附的独立水环引力,并能有效地解释水与固体材料接触角在0～180°范围内土壤对固体材料的粘附规律,分析了土壤粘附的水膜粘滞力与水膜厚度的关系。
The adhesion force of soil to solid materials includs molecular attraction, water-ring attraction and stickiness-stagnancy force of water-film. The molecular attraction of soil adhesion was derived from Lifishitz' s molecular interaction theory between two macrobodies. The water-ring attraction of soil adhesion was obtained based on the energy of soil adhesion system, which can effectively reveal the soil adhesion rules about the contact angles for water on solid material surfaces being from 0 to 180 degrees. The relation between the stickiness-stagnancy force of water-film and the thickness of water-film was analyzed.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1995年第4期5-9,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金
关键词
土壤
粘附
分子间力
接触角
Soil Adhesion Molecular attraction Contact angle
