| 摘要 |
PURPOSE:To provide an artificial soil structure, having a hydrophobit layer composed of hydrophobic particles prepared by treating the soil surface with a fluorine-based water repellent, capable of controlling moisture in the soil and useful for the environmental protection such as prevention of desertification, greening of deserts or protection of forests, agricultural, horticultural and civil engineering and construction, etc. CONSTITUTION:This artificial soil structure is obtained by placing quartz sand in a mortar mixer, preparing a fluorine-based water repellent composed of a fluorine compound expressed by formula I [X is H or CH3; Y is a group expressed by formula II (l is an integer), formula III (R is cyclohexyl or butyl); n is an integer), formula TV (m is an integer)], etc., so as to provide 2.5% solid concentration, adding the prepared water repellent thereto, sufficiently mixing both, then drying the mixture at 150 deg.C for 2hr. Thereby, the artificial soil structure has a hydrophobic layer composed of hydrophobic particles, prepared by treating the soil surface with the fluorine-based water repellent and having <=2000mum particle diameter. |
