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A kind of coal rock mass reinforcement material

A technology for reinforcing materials and coal rock masses, which is applied in the field of coal mine grouting materials, can solve the problems of high equipment requirements, easy foaming, compressive strength, poor toughness, etc., and achieve excellent bonding effect

Inactive Publication Date: 2019-01-04
LONGYAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of its volatility and flammability, the requirements for storage and transportation equipment are relatively high, which increases the cost of wood, and there are still hidden dangers in the use of coal mines.
The internal reaction temperature of urea-formaldehyde resin material is lower than 60°C, and the use of urea-formaldehyde resin material for reinforcement can save costs while improving mining safety, but the urea-formaldehyde resin grouting materials in the prior art are very easy to foam during use Resulting in low compressive strength and poor toughness, it is difficult to popularize and apply
In the prior art, there is no report on the preparation of reinforcement materials by using polyurethane and urea-formaldehyde resin at the same time in a reasonable ratio. The development of reinforcement materials that have both the advantages of polyurethane and urea-formaldehyde resin is a new direction in the research of coal and rock reinforcement materials.

Method used

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  • A kind of coal rock mass reinforcement material
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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Preparation of component A1: Take 40 parts of polyether polyol with a functionality of 3, a molecular weight of 600, and a hydroxyl value of 300 mgKOH / g, a functionality of 5, a molecular weight of 700, and a hydroxyl value of 300 mgKOH / g polyester polyol 30 1 part is put into the reaction kettle and mixed and stirred evenly, then 1 part of composite catalyst, 8 parts of flame retardant trichloropropyl phosphate and 0.8 parts of AK-8803 foam stabilizer are added into the reactor and stirred evenly; the composite catalyst is Triethylenediamine and di-n-octyltin dilaurate are compounded according to the mass ratio of 10:1;

[0022] Preparation of the resin component in component B: first put 50 parts of urea-formaldehyde resin, 15 parts of polyethylene glycol, 15 parts of diluting dispersant propylene glycol carbonate and 8 parts of antistatic agent sodium alkylsulfonate into the reaction kettle in turn, and stir Evenly, then add ammonia water to adjust the pH to 8.5, rai...

Embodiment 2

[0026] Preparation of component A1: Take 30 parts of polyether polyol with a functionality of 2, a molecular weight of 500, and a hydroxyl value of 200 mgKOH / g, a functionality of 4, a molecular weight of 600, and a hydroxyl value of 400 mgKOH / g polyester polyol 20 1.5 parts of composite catalyst, 8 parts of flame retardant trichloropropyl phosphate and 0.8 parts of H-3612 foam stabilizer are added into reactor and stirred evenly; the composite catalyst is It is composed of pentamethyldiethylenetriamine and di-n-octyltin dilaurate in a mass ratio of 10:1;

[0027] Preparation of the resin component in component B: first put 40 parts of urea-formaldehyde resin, 10 parts of polyethylene glycol, 15 parts of diluting dispersant propylene glycol carbonate and 7 parts of antistatic agent Tween into the reaction kettle in turn, stir evenly, and then Add ammonia water to adjust the pH to 8, raise the temperature to 65°C for 2.5 hours, stop heating, then add dilute hydrochloric acid to...

Embodiment 3

[0031] Preparation of component A1: Take 50 parts of polyether polyol with a functionality of 4, a molecular weight of 800, and a hydroxyl value of 400 mgKOH / g, a functionality of 6, a molecular weight of 900, and a hydroxyl value of 400 mgKOH / g polyester polyol 40 One part is put into the reactor and mixed and stirred evenly, then 2 parts of composite catalyst, 8 parts of flame retardant trichloropropyl phosphate and 0.8 part of AK-8803 foam stabilizer are added in reactor and stirred evenly; the composite catalyst is Triethylenediamine and dibutyltin diacetate are compounded according to the mass ratio of 10:1;

[0032] Preparation of the resin component in component B: first put 60 parts of urea-formaldehyde resin, 20 parts of polyethylene glycol, 15 parts of diluting dispersant propylene glycol carbonate and 8 parts of antistatic agent sodium alkyl sulfonate into the reaction kettle in turn, and stir Evenly, then add ammonia water to adjust the pH to 9, raise the temperatu...

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Abstract

The invention provides a coal and rock mass reinforcement material comprising A and B components according to the mass ratio of 1-2:1, the A component is a polyurethane polymer material, the B component is an urea formaldehyde resin material, the polyurethane polymer reinforcement material and the urea formaldehyde resin reinforcement material are creatively and simultaneously used for combination in the reasonable ratio, excellent performances of the polyurethane polymer reinforcement material and the urea formaldehyde resin reinforcement material are combined, defects of the polyurethane polymer reinforcement material and the urea formaldehyde resin reinforcement material are compensated, the obtained composite material has excellent adhesion performance, tensile resistant and impact resistant performance, and acid and alkali resistant performance, and a suitable reinforcement material is provided for high requirements of coal mine and coal rock reinforcement.

Description

technical field [0001] The invention belongs to the technical field of coal mine grouting materials, and in particular relates to a coal rock mass reinforcement material. Background technique [0002] my country's coal resources are abundant, widely distributed, and the coal seam structure is complex. In the process of mining in coal mines, it is inevitable to encounter loose and broken coal bodies with low strength and poor stability. During the excavation process, roof caving is very easy to occur. Therefore, in order to ensure safe production in the mine, the broken roof must be reinforced in advance, effectively Control surrounding rock collapse. [0003] In the last century, the reinforcement materials used in underground coal mines mainly used cement slurry injection as the advanced reinforcement and support of coal and rock mass, but the cement slurry reinforcement and solidification time is too long, and it takes about a week to fully solidify, which greatly reduces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/24C08L75/08C08L71/02C08K5/521C08K5/42C08G18/42C08G18/48C08G101/00
CPCC08G18/4018C08G18/42C08G18/4829C08G2101/00C08L61/24C08L75/08C08L2201/04C08L2205/025C08L2205/03C08L2205/035C08L71/02C08K5/521C08K5/42
Inventor 郭玉森仲涛刘淑金刘谦袁广民杨馥源刘铮杨志平曾斌徐树生
Owner LONGYAN UNIV