Flexible gas closing material for refuse landfill as well as preparation method and use method of flexible gas closing material

A landfill and flexible technology, applied in the field of flexible air-sealing materials for landfills and their preparation, can solve the problems such as the inability to satisfy the deodorization effect for a long time, short timeliness, etc., and achieve significant social and environmental benefits, Long aging, excellent water blocking effect

Pending Publication Date: 2022-05-13
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main treatment method for landfill odor is to use deodorant spraying scheme. The use of deodorant can effectively curb the dispersion of landfill odor to a certain extent, but it often has a short timeliness , unable to satisfy the deodorizing effect for a long time

Method used

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  • Flexible gas closing material for refuse landfill as well as preparation method and use method of flexible gas closing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053]In this embodiment, a flexible air-tight material for a landfill site includes A and B components, and the A component includes:

[0054] (1) At least one of polypropylene glycol of molecular weight 600, polytetrahydrofuran diol of molecular weight 1000, polycaprolactone diol of molecular weight 1000, polycarbonate diol of molecular weight 1000;

[0055] (2) At least one of 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate;

[0056] The B component includes:

[0057] (2) polyhydric alcohols with covalent organic framework structure on molecular structure;

[0058] (2) At least one of polyether trihydric alcohols with a molecular weight of 300 and polyether trihydric alcohols with a molecular weight of 1000;

[0059] (3) deionized water;

[0060] (4) Catalyst one in dibutyltin dilaurate, bismuth carboxylate;

[0061] (5) At least one of polypropylene glycol with a molecul...

Embodiment 2

[0069] A flexible air-tight material for a landfill site, comprising A and B components, the A component comprising:

[0070] (1) at least one of polypropylene glycol of molecular weight 4000, polytetrahydrofuran diol of molecular weight 3000, polycaprolactone diol of molecular weight 3000, polycarbonate diol of molecular weight 3000;

[0071] (2) At least one of 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate;

[0072] The B component includes:

[0073] (3) polyhydric alcohols with covalent organic framework structure on molecular structure;

[0074] (2) At least one of polyether trihydric alcohols with a molecular weight of 500 and polyether trihydric alcohols with a molecular weight of 1500;

[0075] (3) deionized water;

[0076] (4) Catalyst one in dibutyltin dilaurate, bismuth carboxylate;

[0077] (5) At least one of polypropylene glycol with a molecular weight of 4000...

Embodiment 3

[0085] A flexible air-tight material for a landfill site, comprising A and B components, the A component comprising:

[0086] (1) At least one of polypropylene glycol of molecular weight 1500, polytetrahydrofuran diol of molecular weight 1500, polycaprolactone diol of molecular weight 1500, polycarbonate diol of molecular weight 1500;

[0087] (2) At least one of 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate;

[0088] The B component includes:

[0089] (1) Polyols with a covalent organic framework structure on the molecular structure;

[0090] (2) at least one of the polyether trihydric alcohol of molecular weight 350, the polyether trihydric alcohol of molecular weight 1100;

[0091] (3) deionized water;

[0092] (4) Catalyst one in dibutyltin dilaurate, bismuth carboxylate;

[0093] (5) At least one of polypropylene glycol with a molecular weight of 1500, polytetrahydrof...

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Abstract

The invention relates to the technical field of gas closing, in particular to a flexible gas closing material for a refuse landfill and a preparation method and a use method of the flexible gas closing material for the refuse landfill. The component A comprises (1) at least one of polypropylene glycol with the molecular weight of 600 to 4000, polytetrahydrofuran glycol with the molecular weight of 1000 to 3000, polycaprolactone glycol with the molecular weight of 1000 to 3000 and polycarbonate glycol with the molecular weight of 1000 to 3000; and (2) at least one of 2, 4 '-diphenylmethane diisocyanate, 4, 4'-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate. The flexible gas closing material based on the refuse landfill, provided by the invention, has a micro-closed-cell foaming structure, utilizes the closed-cell elastic structure of the material to retard volatilization of toxic and harmful odor, is combined with a refuse landfill gas treatment system to cut off a diffusion path of the odor, and has excellent water blocking and gas closing performance.

Description

technical field [0001] The invention relates to the technical field of air-tightness, in particular to a flexible air-tight material for landfills, a preparation method and a use method thereof. Background technique [0002] In China, the annual transportation volume of urban waste is about 230 million tons. Except for a small part of waste incineration, composting or recycling, more than 70% of the waste will be transported to landfills and incineration plants for treatment. my country's waste classification can be divided into four categories: recyclable waste, toxic and harmful waste, kitchen waste, and other waste. General recyclable waste and restaurant kitchen waste can be degraded according to secondary production and processing methods. Environmental pollution is relatively small, and landfills generally fill up garbage that cannot be degraded or reprocessed. It can only be disposed of through landfill methods, and the landfilled garbage has not been harmlessly treate...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08G18/48C08G18/44C08G18/42C08G18/73C08G18/75C08G18/76C08G101/00
CPCC08G18/4825C08G18/4854C08G18/4277C08G18/44C08G18/4829C08G18/7664C08G18/7621C08G18/755C08G18/73C08G2101/00C08G2110/0008C08G2110/0083C09D5/021C09J175/08C09J175/04C08G2190/00C08G18/227C08G18/246C08G18/4018C08G18/4804C08G18/4812C08G18/7614C08G18/7671C08G18/10C08G18/12C08G18/48C08G18/40B05D1/02C08G2150/60C08J9/125C08J2201/022C08J2203/10C08J2375/08C09D175/08
Inventor薛强李冰万勇刘磊
OwnerINST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI