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A multifunctional additive, its preparation method and its application in coal mine reinforcement materials

A multi-functional technology for strengthening materials, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of loss of mechanical properties of materials, layering of reinforcement materials affecting construction, material inhomogeneity, etc., to reduce the highest response Effects of temperature, improvement of toughness, and improvement of safety

Active Publication Date: 2018-02-16
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, this treatment will cause the loss of the mechanical properties of the material, and on the other hand, it will easily cause the inhomogeneity of the material, causing the layering of the reinforcement material to affect the construction and other problems.

Method used

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  • A multifunctional additive, its preparation method and its application in coal mine reinforcement materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Accurately weigh 5% tributyl phosphate, 40% dibutyl phthalate, 20% methyl oleate and 35% methyl linoleate, stir with a stirrer for 10 minutes, mix evenly, that is multi-functional additive . The additive is mixed with the isocyanate component (polymeric MDI, the specific brand is PM-200) of the coal mine reinforcement material at a weight ratio of 3:7, stirred and mixed evenly to form the A component; the catalyst triethanolamine (TEA), bismorpholine di Ethyl ether (DMDEE) and auxiliary agent ethylene glycol and 50Be ° liquid sodium silicate stirring (wherein catalyst triethanolamine (TEA), bismorpholine diethyl ether (DMDEE) and auxiliary agent ethylene glycol are all a small amount, mainly Stir for liquid sodium silicate) and mix well to form component B. The low exothermic reinforcement material can be prepared by mixing component A and component B in equal volume. And investigate the maximum reaction temperature, compressive strength and compressive deformation of...

Embodiment 2

[0024] Accurately weigh 8% tributyl phosphate, 20% dibutyl phthalate, 40% methyl oleate and 32% methyl linoleate, stir with a stirrer for 10 minutes, and mix well, that is, a multifunctional additive . Mix the additive with the isocyanate component of the coal mine reinforcement material at a ratio of 3:7, stir and mix evenly to form the A component; mix the A component with the catalyst-containing liquid sodium silicate B component in equal volume to obtain about 200 ml of low exothermic reinforcement material. And investigate the maximum reaction temperature, compressive strength and compressive deformation of the reinforced material.

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Abstract

The invention belongs to the technical field of coal mine reinforcement materials and relates to a multifunctional additive, a preparation method of the multifunctional additive and application of the multifunctional additive in coal mine reinforcement materials, in particular to a multifunctional additive for coal mine reinforcement materials, a preparation method of the multifunctional additive and application of the multifunctional additive in the coal mine reinforcement materials. The multifunctional additive is used for decreasing highest reaction temperature of the reinforcement materials and improving mechanical brittleness of the reinforcement materials. The multifunctional additive comprises, by weight, 2%-15% of phosphotriester, 5%-40% of phthalic acid ester, and 45%-75% of long-chain fatty acid methyl ester. The preparation method is simple and suitable for preparing the coal mine reinforcement materials; the materials have highest reaction temperature lower than 100 DEG C, the mechanical properties of the materials are basically not decreased, and brittleness of the materials is improved.

Description

technical field [0001] The invention belongs to the technical field of coal mine reinforcement materials, and in particular relates to a multifunctional additive for coal mine reinforcement materials and its application. Background technique [0002] With the increase of coal mining depth and the emergence of complex terrain, dangerous accidents such as roof leakage and chipping caused by fault fracture zones and unstable strata not only affect the production efficiency of coal mining enterprises, but also seriously threaten the life safety of miners. Therefore, in the coal mine production process, grouting reinforcement is generally carried out. At present, the most widely used organic polymer grouting reinforcement materials include polyurethane, urea-formaldehyde, and phenol-formaldehyde. Although urea-formaldehyde and phenolic reinforcement materials have the advantages of good permeability, adjustable gel speed, and low cost, their disadvantages such as low strength an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/467
CPCC09K8/467
Inventor 王继勇于维雨翟晶王玉超郭建明孔令坡陈杨单体霞马磊
Owner CCTEG CHINA COAL RES INST
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