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A low heat storage temperature, antistatic grouting reinforcement material and preparation method thereof

A grouting reinforcement and antistatic technology, applied in the field of coal and rock mass reinforcement, can solve the problems of high heat storage temperature of polyurethane grouting materials, affecting the use and popularization and application, poor antistatic performance, etc., to promote heat conduction and easy to popularize and use , Improve the effect of antistatic performance

Active Publication Date: 2018-11-23
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production and application process of underground mines, polyurethane grouting materials have potential safety hazards such as smoke and fire caused by high internal heat storage temperature and poor antistatic performance, which seriously affect their use and popularization.

Method used

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  • A low heat storage temperature, antistatic grouting reinforcement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Mix 17 parts by mass of graphite (20 μm in particle size) and 100 parts by mass of PAPI, stir at 25°C for 2 hours, seal and store to obtain Component A;

[0031] 2) Place polyether polyol N303 (functionality 3, molecular weight 350) and polyether polyol N204 (functionality 2, molecular weight 400) in a vacuum drying oven, dry at 105°C for 2 hours, cool to room temperature and seal Save to obtain pretreated polyether polyol N303 and pretreated polyether polyol N204;

[0032] 3) Mix 50 parts by mass of pretreated polyether polyol N303 and 30 parts by mass of pretreated polyether polyol N204 evenly, then add 0.5 parts by mass of dibutyltin dilaurate and 10 parts by mass of TCEP in sequence, and stir evenly Obtain component B;

[0033] 4) Mix component A and component B according to the volume ratio of 1:1, stir until whitening occurs, inject into the mold under 3-5MPa pressure, and cure at room temperature for 3-5 minutes. After curing, the samples were taken out, and...

Embodiment 2

[0035] 1) Mix 25 parts by mass of graphite (particle size: 20 μm) and 100 parts by mass of PAPI, stir at 25°C for 2 hours, seal and store to obtain Component A;

[0036] 2) Place polyether polyol N303 (functionality 3, molecular weight 350) and polyether polyol N204 (functionality 2, molecular weight 400) in a vacuum drying oven, dry at 105°C for 2 hours, cool to room temperature and seal Save to obtain pretreated polyether polyol N303 and pretreated polyether polyol N204;

[0037] 3) Mix 50 parts by mass of pretreated polyether polyol N303 and 30 parts by mass of pretreated polyether polyol N204 evenly, then add 0.5 parts by mass of dibutyltin dilaurate and 10 parts by mass of TCEP in sequence, and stir evenly Obtain component B;

[0038] 4) Mix component A and component B according to the volume ratio of 1:1, stir until whitening occurs, inject into the mold under 3-5MPa pressure, and cure at room temperature for 3-5 minutes. After curing, the samples were taken out, and r...

Embodiment 3

[0040] 1) Mix 30 parts by mass of graphite (20 μm in particle size) and 100 parts by mass of PAPI, stir at 25°C for 2 hours, seal and store to obtain Component A;

[0041] 2) Place polyether polyol N303 (functionality 3, molecular weight 350) and polyether polyol N204 (functionality 2, molecular weight 400) in a vacuum drying oven, dry at 105°C for 2 hours, cool to room temperature and seal Save to obtain pretreated polyether polyol N303 and pretreated polyether polyol N204;

[0042] 3) Mix 50 parts by mass of pretreated polyether polyol N303 and 30 parts by mass of pretreated polyether polyol N204 evenly, then add 0.5 parts by mass of dibutyltin dilaurate and 10 parts by mass of TCEP in sequence, and stir evenly Obtain component B;

[0043] 4) Mix component A and component B according to the volume ratio of 1:1, stir until whitening occurs, inject into the mold under 3-5MPa pressure, and cure at room temperature for 3-5 minutes. After curing, the samples were taken out, and...

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Abstract

The invention discloses a low heat storage temperature and antistatic grouting reinforcement material and a preparation method thereof, wherein the raw materials of the low heat storage temperature and antistatic grouting reinforcement material are composed of 100 parts by mass of isocyanate, polymerized 70-100 parts of polyol, 0.5-2 parts of tin catalyst, 10-50 parts of flame retardant diluent, 10-30 parts of graphite. The invention uses graphite-modified polyurethane grouting material to improve the antistatic performance of the grouting composite material by utilizing the electrical and thermal conductivity of graphite, and at the same time promotes the heat conduction inside the grouting consolidated body, and significantly reduces the heat storage temperature of the grouting material. Reduce safety hazards.

Description

1. Technical field [0001] The invention relates to a grouting reinforcement material with low heat storage temperature and antistatic properties and a preparation method thereof, which is especially suitable for reinforcement of coal and rock masses under thick loose aquifers, and has high safety in the grouting process. 2. Background technology [0002] With the increase of coal mining intensity and depth, the geological conditions under the mine are becoming increasingly complex, and the number of broken surrounding rocks is increasing. Traditional support methods and support materials are difficult to meet the needs of coal production. For this reason, my country began to study the chemical grouting technology of coal mines in the early 1990s, and has made great progress. Among them, chemical grouting reinforcement materials represented by polyurethane grouting materials have been widely used and developed. [0003] Due to the moderate viscosity and adjustable gel time of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/48C08K9/04C08K3/04C08K5/521C08L75/08C09K5/14
CPCC08G18/4812C08G18/7664C08K3/04C08K5/521C08K9/04C08K2201/003C08L2201/02C08L2201/04C09K5/14C08L75/08
Inventor 夏茹杨斌邢国琳程桦陈鹏钱家盛苗继斌曹明苏丽芬郑争志
Owner ANHUI UNIVERSITY
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