Environment-friendly flame-retardant high-molecular gel inhibitor for preventing coal from spontaneously combusting of coal mine

Abstract

The invention discloses an environment-friendly flame-retardant high-molecular gel inhibitor for preventing coal from spontaneously combusting of coal mine, which takes water as a solvent and comprises the following components with percentage concentration by weight: 7-10 percent of high-molecular base material, 0.1-0.5 percent of inorganic inhibitor, 0.1-0.5 percent of flame retardant agent, 0.01-0.5 percent of surface active agent and 0.1-3 percent of reinforcing agent. The environment-friendly flame-retardant high-molecular gel inhibitor has the advantages of simple operation, good wall-absorbing property and inhibiting effect, flame retardant property and environment protection; a coating layer can bear the action of flame for a plurality of times and has large mechanical strength, and a coating film is stable and does not fall off in the humid environment. In the process of coal mining, the inhibitor solution is sprayed to superficial coal and combustible areas behind a coal-mining working surface and the spontaneous combustion tendency of coal can be reduced, therefore, the environment-friendly flame-retardant high-molecular gel inhibitor prevents the spontaneous combustion of coal thoroughly and is applicable to the operation under a mine and coal storage.

Description

technical field [0001] The invention belongs to the field of fire-preventing materials for coal mines, and in particular relates to an environmentally friendly flame-retardant polymer inhibitor used for preventing coal spontaneous combustion in coal mines. technical background [0002] Coal spontaneous combustion fires have always threatened the safety of coal production and storage, causing huge losses of coal resources, affecting mining efficiency, and even causing gas explosions or underground fires, seriously threatening the personal safety of mines and miners, and causing huge losses to the country. Economic losses. Compared with the major coal-producing countries in the world, my country has a large variety of low-grade coals, and a wide range of mines that spontaneously combust in a large number. The fires caused by coal spontaneous combustion account for more than 90% of the total number of mine fires. The main reason for spontaneous combustion of coal seams is that...

AI Technical Summary

Problems solved by technology

Gel-type inhibitors can form a barrier film on the surface of the coal body to isolate the oxidation reaction between the coal body and the oxygen in the air to achieve the inhibitory effect; however, the water glass gel inhibitor has the advantages of large dosage, large volume shrinkage, and easy Cracking and other shortcomings, organogel inhibitors often have poor thermal stability, easy to burn and high cost

Plugging agents such as polyurethane, phenolic resin, and urea-formaldehyde resin also have good effects on blocking coal oxidation, but their cost is high, the operation is complicated, and the raw materials are corrosive and pollute the environment.