A kind of nitrogen, phosphorus and silicon synergistic coal flame retardant and dust suppressant and preparation method thereof

Abstract

The invention belongs to the field of coal flame retardant and dust suppressant, and specifically discloses a nitrogen, phosphorus and silicon synergistic coal flame retardant and dust suppressant and a preparation method thereof. The raw materials include the following components in parts by mass: 0.08 to 0.12 parts of phosphorus system Flame retardant, 0.10-0.14 parts of nitrogen-containing silane coupling agent, 0.01-0.05 parts of aldehyde compounds, 100.0-200.0 parts of solvent, 0.18-0.36 parts of silicon-based flame retardant, 0.1-0.4 parts of pH regulator, 83.0-125.0 parts 57.0-95.0 parts of alcohol, 1.0-2.0 parts of natural polymer, 10.0-20.0 parts of monomer, 4.0-8.0 parts of pH buffer, 0.1-0.4 part of initiator, 0.02-0.08 part of cross-linking agent, 0.2 ~0.4 part of surfactant, 0.2~1.0 part of plasticizer. Use aldehyde compound to graft nitrogen-containing silane coupling agent on the phosphorus-based flame retardant molecules, then hydrolyze it and react with the surface hydroxyl groups on the silicon-based flame retardant through dehydration reaction between hydroxyl groups to obtain nitrogen-phosphorus-silicon synergistic flame retardants , and finally combined with dust-suppressing components such as natural polymers, monomers, glycerin, and surfactants in the same system through polymer radical polymerization, so that it has both flame-retardant and dust-suppressing properties.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant and dust-suppressing agents for coal, and in particular relates to a flame-retardant and dust-suppressing agent for coal with nitrogen, phosphorus and silicon synergy and a preparation method thereof. Background technique [0002] my country is a country that consumes a lot of coal resources. During the mining, transportation, storage and combustion of coal, a large amount of dust will be generated, which will not only cause a serious waste of coal resources, but also cause great pollution to the surrounding environment. Excessive coal dust It will also cause dust explosion, which will threaten people's life safety. 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 and waste of resources. [0003] At present, most of the dust suppressants and flame ...

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Problems solved by technology

At the same time, the spontaneous combustion of coal has always threatened the lives of operators and the safety of mining equipment in coal mining and storage, causing a large amount of economic losses and waste of resources

[0003] 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 pressure 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, and its cost is high.

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