A mine-used high antistatic composite spraying plugging material and its preparation method

Abstract

The invention belongs to the technical field of plugging and sealing materials for mines, and in particular relates to a highly antistatic composite spraying wind leakage plugging material for mines and a preparation method thereof. Consists of Component A: water glass, deionized water, CUCAT‑WN catalyst, glycerin, alkanolamides, ethoxylated alkyl polyamines; Component B: polymethylene polyphenyl polyisocyanate, polyurethane pre- polymer, triacetin, 141b foaming agent, foam stabilizer L-6900, super absorbent resin, polyacrylamide, sodium alginate. After preparing component A and component B separately, component A and component B will be prepared, and sprayed on the coal rock mass or the wall that needs to be sealed by a spraying machine at room temperature, and sprayed several times until Corresponding thickness, that is, high antistatic composite spraying plugging material for mining. The invention is mainly used as a plugging wind material with excellent and long-term antistatic performance and excellent airtight performance used in underground coal mines, so as to prevent underground safety accidents caused by the discharge phenomenon caused by the accumulation of local electrostatic charges in underground coal mines.

Description

A kind of mine high antistatic composite spraying plugging air material and preparation method thereof technical field The invention belongs to the mine plugging sealing material technical field, be specifically related to a kind of mine use high antistatic composite spraying plugging Air leakage material and preparation method thereof. Background technique [0002] Coal mine production has its particularity. Since the production space is mainly in the underground tunnel, the special working environment It is determined that the consequences of accidents in coal mine production are often very serious. Mine air leakage is not only a major hidden danger of mine ventilation It is also an important reason for the spontaneous combustion of coal left in the goaf. In order to solve the problem of mine air leakage, researchers have developed a large number of It is used as a material for blocking air leakage in coal mines to reduce air leakage to the goaf, prevent gas gushi...

AI Technical Summary

Problems solved by technology

[0003] At this stage, the air leakage plugging material for underground coal mines has not been fully researched and designed for the antistatic properties of the material itself. The invention patent with the application number 202010124941.1 "A Mine Spraying Air Leakage Plugging Material and Its Preparation Method" discloses A phenolic urea-formaldehyde resin plugging material, which has the advantages of high compressive strength and good bending performance, but does not involve the antistatic performance of the material, and the material itself is a polymer with a relatively high resistivity material, which is very easy to accumulate electrostatic charges; the invention patent of application number 201711367226.5 "A Composite Spraying Material, Framework and Implementation Method for Downhole Rapid Plugging and Filling" discloses a composite resin foam plugging formed by phenolic, polyurethane and urea-formaldehyde The leakage filling material has the characteristics of light weight, fast forming, strong airtightness, and good fireproof plugging effect. The material has added 2% antistatic agent inside to achieve a certain antistatic effect, but it is not antistatic. Make a clear statement on the advantages and disadvantages of electrostatic effect and long-term effect

[0004] In addition, the spraying plugging and air sealing material used in underground mines can also use polyurethane foam material alone. Its sealing speed is fast, convenient and quick, and its sealing effect is good. agent and antistatic agent, the cost is higher