Lightweight foam composite material having high water storage capacity and achieving continuous water supply

Abstract

The invention relates to a building or wall material suitable for plant growth, in particular to a lightweight foam composite material having the high water storage capacity and achieving continuous water supply. The components of the material comprise two or more of polymer, hydrogel particles, cellulose and hard fiber, and the material is obtained by mixing and foaming all the components; holesformed through material foaming and hydrogel or cellulose swelling after water absorption form water channels; after water absorption, the whole volume expansion ratio of the material is smaller than5%. The material is high in water storage capacity, high in strength, small in contour expansion after water absorption, good in water mobility and suitable for plant growth.

Description

technical field [0001] The invention relates to building or wall materials suitable for plant growth, in particular to a lightweight foam composite material with high water storage capacity and sustainable water supply. Background technique [0002] At present, in order to increase the green coverage rate of the city to alleviate the increasingly serious heat island effect, noise pollution and many other environmental deterioration factors, setting up vertical green walls and green roofs to increase the space green rate is a popular method at present. In the actual engineering application of wall greening technology, many factors need to be considered. The first priority is safety, which depends to a large extent on the strength and weight of the wall greening device, too low strength and too high weight, there are serious safety hazards; secondly, the device stores the nutrients needed for plant growth For example, wall soil planting has been applied, but its outstanding d...