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Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same

A technology of urea-formaldehyde resin and coal rock mass, which is applied in the field of materials for bonding and consolidation of loose coal rock mass, can solve the problems of difficulty in popularization and application, high material cost, and high equipment investment cost, and achieve excellent material pumpability, low material cost and low cost. The effect of low equipment investment and easy promotion and application

Inactive Publication Date: 2006-02-15
淮南矿业集团兴科计量技术服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Material costs and equipment input costs are high, making it difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Selection of each component in the material:

[0027] The urea-formaldehyde resin is urea-formaldehyde resin cured at room temperature, the organic polymer acid is citric acid, the carbonate is magnesium, aluminum, iron carbonate or a mixture of the three in equal amounts, the silicon oxide is powdery porous silica, and the specific surface area is 16-55m2 / g, fineness 180 mesh, inorganic ammonium salt is ammonium sulfate or ammonium chloride, polyacrylic acid salt is sodium polyacrylate with a molecular weight of 4-6 million, and water is normal water.

[0028] The material by weight consists of:

[0029] Urea-formaldehyde resin 80-90, organic polymer acid 2-15,

[0030] Carbonate 2-10, Silicon oxide 5-10,

[0031] Inorganic ammonium salt 2-5, polyacrylic acid salt 3-20,

[0032] Water 5-20.

[0033] Preface

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Abstract

The invention discloses a loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same, wherein the material comprises urea aldehyde resin, polyacrylates, organic macromolecular acid, carbonates, silicon oxide and inorganic ammonium salt. The invention can realize the normal temperature chemical foaming and solidifying for the urea aldehyde resin.

Description

Technical field: [0001] The invention relates to a foamed resin consolidation material, more specifically a material suitable for bonding and consolidation of loose coal and rock masses in coal mines and related industries. Background technique: [0002] The mining of coal mines requires the excavation and maintenance of roadway chambers. Under the action of mine pressure, the surrounding rocks of the roadway, especially the loose coal and rock mass, are very easy to smoke, which brings hidden dangers to the safety of support. [0003] For the maintenance and reinforcement of loose coal and rock masses that affect safety, in addition to the normal roadway support, the most commonly used methods are: first, pressure injection of hydraulic cementitious materials, such as cement, cement plus water glass, etc.; second, pressure injection of polyurethane bonding materials . Generally, the hydraulic cementitious material is a non-bonding material. Although its bonding with coal a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/24C08J3/24C08J9/00
Inventor 郑是立徐化诚薛俊华王春林
Owner 淮南矿业集团兴科计量技术服务有限责任公司
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