| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chaff water-retaining mat formed of a reactive urethane binder, having a strength not to be bent or broken even if stamped by feet and an improved water absorbing speed; and a medium structure for planting or greening using the same. <P>SOLUTION: The chaff water-retaining mat for planting or greening includes chaff which is bound by a reactive urethane binder including a polyethylene oxide group, especially the reactive urethane binder combined with a polyethylene oxide adduct including isocyanate group terminal urethane prepolymer and at least two hydroxy groups, and the water absorbing speed of the mat is improved. The chaff water-retaining mat for planting or greening is well-balanced in the water absorbing speed and the strength, and is applicable to the medium structure with an additional soil layer with planted plants layered on the chaff water-retaining mat, or the medium structure with plants planted on the soil loaded into a hole formed on the surface of the chaff water-retaining mat for tree planting or greening. <P>COPYRIGHT: (C)2012,JPO&INPIT |
