High polymer chemistry coal and rock mass reinforcer for coal mines

A polymer and reinforcing agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor scientific standardization, large toxic gas, unstable performance, etc., and achieve large compression deformation and foam toughness Large, functional effects

Inactive Publication Date: 2013-11-27
DATONG COAL MINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of polyurethane reinforcement material in order to solve the problems of high price, flammability, large amount of poisonous gas generated when burning, unstable

Method used

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  • High polymer chemistry coal and rock mass reinforcer for coal mines
  • High polymer chemistry coal and rock mass reinforcer for coal mines
  • High polymer chemistry coal and rock mass reinforcer for coal mines

Examples

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Example Embodiment

[0029] Example 1

[0030] A polymer chemical coal and rock strengthening agent for coal mines, composed of equal volumes of component A and component B, where component A is composed of polyether polyol, catalyst and flame retardant, and component B is multi-component Methyl polyphenyl polyisocyanate; The polyether polyol in the A component is a polyether polyol with a functional group of 3 or more, a hydroxyl value of 450-550, and a molecular weight of 300-500; the catalyst in the A component is made of dibutyl tin It is composed of dilaurate and triethylenediamine, where the mass of dibutyltin dilaurate is 0.1% of the mass of polyether polyol, and the mass of triethylenediamine is 0.05% of the mass of polyether polyol; component A The flame retardant in is composed of dimethyl methyl phosphonate, tris (1,3-dichloro-2-propyl) phosphate and sodium silicate. Among them, the quality of dimethyl methyl phosphonate is polyether 14% of the total mass of polyol and catalyst, the mass ...

Example Embodiment

[0034] Example 2

[0035] A polymer chemical coal and rock strengthening agent for coal mines, composed of equal volumes of component A and component B, where component A is composed of polyether polyol, catalyst and flame retardant, and component B is multi-component Methyl polyphenyl polyisocyanate; The polyether polyol in the A component is a polyether polyol with a functional group of 3 or more, a hydroxyl value of 450-550, and a molecular weight of 300-500; the catalyst in the A component is made of dibutyl tin It is composed of dilaurate and triethylenediamine, where the mass of dibutyltin dilaurate is 0.1% of the mass of polyether polyol, and the mass of triethylenediamine is 0.05% of the mass of polyether polyol; component A The flame retardant in is composed of dimethyl methylphosphonate, tris(1,3-dichloro-2-propyl) phosphate and sodium silicate. Among them, the quality of dimethyl methylphosphonate is polyether 14% of the total mass of polyol and catalyst, the mass of ...

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Abstract

The invention provides a high polymer chemistry coal and rock mass reinforcer for coal mines and solves the problems of the existing polyurethane reinforcing material, such as high price, inflammable and toxic properties, poor performance stability and the like. The high polymer chemistry coal and rock mass reinforcer for coal mines provided by the invention comprises components A and B which are the same in volume, wherein the component A consists of polyether polyol, catalyst and fire retardant, and the component B is polyaryl polymethylene isocyanate; the polyether polyol has more than 3 functional groups, hydroxyl value of 450-550 and molecular weight of 300-500; the catalyst is composed of dibutyltin dilaurate and triethylene diamine; and the fire retardant is composed of methyl methylphosphonate, tri(1,3-dichloro-2-propyl) phosphate and sodium silicate. The high polymer chemistry coal and rock mass reinforcer for coal mines provided by the invention belongs to polyurethane grouting agents and silicate modified polyurethane grouting agents, and is an environment-friendly material with resin content of 100% and no volatile organic compounds, and all indexes of the reinforcer completely accord with AQ1089-2011 quality standard of high polymer material for reinforcing coal and rock mass in coal mines.

Description

technical field [0001] The invention relates to the technical field of coal and rock mass chemical grouting reinforcement, in particular to a polymer chemical coal and rock mass reinforcing agent for coal mines. Background technique [0002] During the underground mining construction of coal mines, due to the geological structure, primary fissures and the broken coal and rock mass formed by the influence of mining pressure, etc., it often causes the side and roof fall of the mining face, which affects the safety of production, especially with the degree of mining mechanization. These problems have seriously restricted the performance of equipment and the improvement of productivity. Chemical reinforcement technology has been widely used abroad in the 1970s. For example, Germany, France, Russia and other countries have developed a variety of chemical reinforcement materials and supporting construction tools. The annual consumption of chemical reinforcement materials is hundre...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08G18/32C08G18/24C08G18/20C09K8/565
Inventor 张有喜于斌席继宏刘文彦于春兰常晓华刘占鸣苗育青禹秀英方娜
Owner DATONG COAL MINE GRP
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