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Preparation method for bentonite anti-seepage material

A technology of anti-seepage material and bentonite, which is applied in the field of preparation of anti-seepage materials, can solve the problems of unreported and few studies on the application of domestic waste landfills, and achieve sufficient raw material resources, good anti-seepage performance, and preparation The effect of simple process and operation

Inactive Publication Date: 2012-07-18
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

In recent years, there are not many studies on polyacrylamide new bentonite anti-seepage materials as functional materials for environmental purification and environmental restoration. However, there is no report on the engineering application research of domestic waste landfill

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  • Preparation method for bentonite anti-seepage material
  • Preparation method for bentonite anti-seepage material
  • Preparation method for bentonite anti-seepage material

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Embodiment Construction

[0018] Ratio of n(PAM):n(F):n(AM) in modified polyacrylamide and modified polyacrylamide and bentonite.

[0019] 1) Influence of molar ratio: The degree of crosslinking of modified polyacrylamide room temperature cross-linked product changes with its molar ratio (n(PAM):n(F):n(AM)): when the molar ratio increases , the cross-linking degree of the room temperature cross-linking product decreases, this is because the cross-linking reaction occurs between the active groups of the room temperature cross-linking polyacrylamide side chains, and the change of the cross-linking degree is related to the active groups on the side chains. It can be inferred that the number of active groups in the side chain of modified polyacrylamide will directly affect the change of its pores and the performance of anti-seepage materials. In practical applications, the degree of crosslinking can be adjusted at any time according to actual requirements. It is easy to control the overall stability of the...

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Abstract

The invention discloses a preparation method for a bentonite anti-seepage material and relates to a preparation method of an anti-seepage material. The preparation method comprises the following preparation steps of: weighing metric ammonium persulfate, and dissolving the metric ammonium persulfate into distilled water to prepare a 10% ammonium persulfate solution for later use; weighing modified polyacrylamide and N, N'-methylene-bisacrylamide as a cross-linking agent in proportion, placing the weighed components into a beaker of 250mL, then adding tetramethylethylenediamine and uniformly stirring the mixture; weighing natural sodium bentonite, adding the natural sodium bentonite into the beaker by keeping stirring to ensure that the natural sodium bentonite is uniformly mixed with the mixture; adding the prepared 10% ammonium persulfate solution into the beaker, and stirring for 3-5min; and standing still the mixture, and shaping and drying according to a required shape immediately to prepare the bentonite anti-seepage material product. The bentonite anti-seepage material prepared by adopting the preparation method has the advantages of simple preparation process, easy obtaining and low price of raw materials, convenience for processing and better performance for resisting seepage and adsorbing and removing pollutants.

Description

technical field [0001] The invention relates to a preparation method of anti-seepage material, in particular to a preparation method of bentonite anti-seepage material. Background technique [0002] With the acceleration of urbanization, the rapid increase of population and the general improvement of people's living standards, the management of municipal solid waste has become a major challenge faced by countries all over the world, especially cities in developing countries. According to statistics, in 2004, my country surpassed the United States to become the world's largest waste producer. It is estimated that the output of urban waste in my country will increase from 190 million t / a in 2004 to 480 million t / a in 2030. At present, there are three main ways to dispose of urban waste at home and abroad: solid landfill, composting, and incineration; in my country, solid landfill is the main method. The landfills appeared in the late 1930s. In the 1960s, many European and Am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/10
Inventor 刘学贵刘长风邵红
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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