Silicon-phosphorus synergistic coal flame-retardant dust suppressant and preparation method thereof

Abstract

The invention belongs to the field of coal flame-retardant dust suppressants and particularly discloses a silicon-phosphorus synergistic coal flame-retardant dust suppressant and a preparation methodthereof. The silicon-phosphorus synergistic coal flame-retardant dust suppressant comprise the following components, by mass: 0.10 to 0.30 part of a phosphorus-based flame retardant, 0.15 to 0.30 partof a silane coupling agent, 0.008 to 0.018 part of a catalyst, 80.0 to 160.0 parts of a solvent, 0.10 to 0.40 part of a silicon flame retardant, 0.1 to 0.4 part of a pH regulator, 83.0 to 125.0 partsof deionized water, 57.0 to 95.0 parts of an alcohol compound, 1.0 to 2.0 parts of a natural polymer, 10.0 to 20.0 parts of a monomer, 4.0 to 8.0 parts of a pH buffer agent, 0.1 to 0.4 part of an initiator, 0.02 to 0.08 part of a cross-linking agent, 0.2 to 0.4 part of a surfactant and 0.2 to 1.0 part of a plasticizer. The silicon and phosphorus elements are introduced into the flame-retardant dust suppressant and the flame-retardant dust suppressant is an efficient silicon-phosphorus synergistic flame-retardant system to overcome the defects of lower flame-retardant level and small limit oxygen index of a single flame retardant, and has excellent flame retardancy. A polymer film formed after spraying can prevent pulverized coal from being blown away, and coal dust pollution is reduced; and the effect of isolating oxygen can be achieved, so that spontaneous combustion of coal is prevented.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant and dust-suppressing agents for coal, in particular to a flame-retardant and dust-suppressing agent for coal with silicon-phosphorus synergy and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, the demand for energy is increasing. As the main energy source, coal mining, transportation and storage are increasing year by year. At present, my country's coal is mainly transported by rail, and it is easy to generate dust when it is disturbed by the air flow during the transportation process, which will not only cause a serious waste of coal resources, but also cause great pollution to the surrounding air and seriously endanger people's health. At the same time, the spontaneous combustion of coal has been threatening the lives of operators and the safety of mining equipment in coal mining and storage, causing a lot of economic losses...

AI Technical Summary

Problems solved by technology

However, due to the smoke toxicity and environmental problems caused by halogen-based flame retardants, they are being restricted by many industries. Halogen-free or low-halogen flame-retardant products are becoming the development trend of the industry

A single flame retardant has the disadvantages of low flame retardant level, small limiting oxygen index, and large addition amount

[0005] At present, most of the dust suppressants and flame retardants are used in combination in my country. Most of the flame retardants rely on imports and the cost is high.

Moreover, hard-shell dust suppressants are widely used in the market today, with poor compression resistance. The cured layer is relatively brittle after spraying, and is easily broken by shock and wind during transportation, thus losing the dust suppression effect. Therefore, a large amount of repeated spraying is required. Dust suppressant makes its cost higher

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