Chemical grouting filling seal material for coal mine, and preparation method and application method thereof

A grouting filling material and chemical technology, applied in the field of chemical materials, can solve the problems of high monomer content of urea-formaldehyde resin raw materials, low foaming ratio, and environmental pollution, and achieve easy control of product quality, good flame retardant and antistatic properties, The effect of simple production process

Inactive Publication Date: 2012-10-03
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of traditional inorganic materials as filling and sealing materials has disadvantages such as low construction efficiency, difficulty in grouting, and large amount of filling due to non-foaming. However, chemical grouting materials are used as filling and sealing materials. Currently, only polyurethane, urea-formaldehyde resin, and Phenolic resin, modified water glass, etc.
[0004] Although polyurethane filling materials have the advantages of high foaming ratio, less filling amount, and foaming when exposed to water, there are fatal defects such as high price, high application cost, and poor flame retardancy when used in coal mines.
Although the urea-formaldehyde resin filling material has lo

Method used

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  • Chemical grouting filling seal material for coal mine, and preparation method and application method thereof
  • Chemical grouting filling seal material for coal mine, and preparation method and application method thereof
  • Chemical grouting filling seal material for coal mine, and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A component

[0032]

[0033] B component

[0034] Hardener 1 65

[0035] Hardener 2 15

[0036] Hardener 3 20

[0037] Among them, the phenolic resin is phenol formaldehyde resin, the foaming agent is azobisisobutylcyanide, the foam stabilizer is anionic surfactant, and the special additive is a mixture of Hemmings Dechem 903, 201 and polyester polyol.

[0038] Wherein, curing agent 1 is benzoic acid, curing agent 2 is p-hydroxybenzenesulfonic acid, and curing agent 3 is phosphoric acid.

[0039] Among them, the preparation process steps of component A:

[0040] 1) According to the ratio, take part of the phenolic resin and add it to the pull tank, start stirring, add additives, after stirring for 2 hours, add foaming agent, and disperse at high speed for 30 minutes to obtain a pre-dispersed slurry.

[0041] 2) Add the remaining phenolic resin into the reaction kettle, start stirring, add the pre-dispersed slurry obtained in 1, stir for 1 hour, then add foam st...

Embodiment 2

[0047] A component:

[0048]

[0049] B component

[0050] Hardener 1 65

[0051] Hardener 2 15

[0052] Hardener 3 20

[0053] Among them, the phenolic resin is cresol acetaldehyde resin, the foaming agent is sodium carbonate, the foam stabilizer is nonionic surfactant, and the special additive is a mixture of Hemmings Dechem 912, 908 and polyether polyol.

[0054] Wherein, the curing agent 1 is p-hydroxybenzenesulfonic acid, the curing agent 2 is acetic acid, and the curing agent 3 is sulfuric acid. When in use, the A and B components are grouted with a professional grouting pump, and they can be foamed at room temperature to obtain a filling material with a high foaming ratio.

Embodiment 3

[0056] A component:

[0057]

[0058] B component

[0059] Hardener 1 55

[0060] Hardener 2 25

[0061] Hardener 3 20

[0062] Among them, the phenolic resin is phenol paraformaldehyde resin, the foaming agent is a mixture of sodium carbonate and azobisisobutylcyanide, the foam stabilizer is cationic surfactant, and the special additives are Hemings Dechem 923, 275, poly The mixture of vinyl alcohol and flame retardant is triphenyl phosphate.

[0063] Wherein, curing agent 1 is o-hydroxybenzenesulfonic acid, curing agent 2 is benzoic acid, and curing agent 3 is sulfuric acid.

[0064] When in use, the A and B components are grouted with a professional grouting pump, and they can be foamed at room temperature to obtain a high flame-retardant filling material.

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PUM

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Abstract

The invention discloses a chemical grouting filling seal material for coal mine, which comprises a component A and a component B, wherein the component A comprises a main agent phenol formaldehyde resin and an assistant, and the assistant comprises one and/or mixture of a foaming agent, a foam stabilizer, a flame retardant, a special-type assistant and the like; the component B is a curing agent; and the component A and the component B are proportionally mixed to form the foam material. The chemical grouting filling seal material for coal mine can foam at room temperature, does not generate environment-polluting gas, has the advantages of high foaming ratio, high safety, no pollution, favorable flame retardancy, favorable antistatic property, simple production technique and easily controlled product quality, and is especially suitable for filling a coal mine.

Description

technical field [0001] The invention relates to a chemical grouting material, in particular to a chemical grouting filling material for coal mines, belonging to the field of chemical materials. Background technique [0002] my country has large coal reserves, complex geological conditions, complex coal seams, serious safety problems, and generally low production efficiency. my country's coal mines are mainly underground mining, which requires the excavation of large-scale underground roadways. Due to the characteristics of low strength, fragmentation and high ground stress in my country's coal mine sedimentary strata; small coal pillars for road protection, and strong dynamic pressure influence, among them, roadway support , Reinforcement of the coal wall of the working face, reinforcement of the roadway, filling of the high-risk area of ​​the roadway, water blocking, fire prevention, sealing of the goaf and other related safety materials are key technologies that directly af...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L61/10C08J9/08C08J9/10E21D11/00
Inventor 郑先军李红英
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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