Method for regulating and controlling water retention capacity of porous material and product thereof

Abstract

The invention relates to a method for regulating and controlling the water retention capacity of a porous material and a product thereof, and belongs to the technical field of porous medium permeability regulation and control. The pore condition of the porous material is adjusted based on the interaction force among particles in the porous medium, so that the water retention capacity of the porous material is improved. The method mainly comprises the following steps of: adding any one of saline-alkali soil with the salt content of more than or equal to 1 percent, a mixture of the saline-alkali soil with the salt content of more than or equal to 1 percent and clay minerals or a mixture of the saline-alkali soil with the salt content of more than or equal to 1 percent, the clay minerals and anionic polyacrylamide into a matrix material of a porous medium; the water retention capacity of the porous material can be regulated and controlled by stirring and uniformly mixing, and a water retention layer of any depth of the porous medium is constructed according to actual requirements.

Description

technical field [0001] The invention belongs to the technical field of regulating and controlling the permeability of porous media, and in particular relates to a method for regulating and controlling the water retention capacity of porous materials and a product thereof. Background technique [0002] The permeability of porous media is determined by various properties such as porosity, tortuosity, pore radius, and specific surface area. The structure of porous media is complex, and the arrangement is random and disordered, such as the size and distribution of pores, which leads to slow progress in the research on the mechanism and application of permeability. In recent years, the application of fractal theory to the permeability of porous media has attracted widespread attention from scholars at home and abroad, and some empirical models have been proposed accordingly. However, these models are only obtained by relying on some physical properties of the dispersion medium, ...

AI Technical Summary

Problems solved by technology

However, due to the lack of mechanism and theoretical basis, its regulation ability is mostly obtained through empirical relations, and it is difficult to adjust the permeability performance according to the needs to improve the water retention capacity in desert areas.

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