Microcapsule fire extinguishing agent and preparation method thereof

Abstract

The invention provides a microcapsule fire extinguishing agent and a preparation method thereof. The microcapsule fire extinguishing agent comprises a flame-retardant shell composed of a low-melting-point copolymer and a cooling inner core containing a cooling material, wherein the flame-retardant shell coats the cooling inner core to form microcapsule particles with a core-shell structure, the low-melting-point copolymer is formed by copolymerizing a low-melting-point high-molecular polymer monomer and a flame retardant, the flame-retardant shell melts and explodes automatically when the external environment reaches the preset starting temperature, and the cooling inner core in the flame-retardant shell is released. The microcapsule fire extinguishing agent provided by the invention adopts an in-situ polymerization preparation method, and the microcapsule fire extinguishing agent with different starting temperatures is prepared by regulating and controlling the reaction parameters such as the variety of low-melting-point high-molecular polymer monomers, the mass ratio of the low-melting-point high-molecular polymer monomers to the cooling material, the copolymerization reaction time and pressure and the like, so that the microcapsule fire extinguishing agent is suitable for different scene requirements. The microcapsule fire extinguishing agent provided by the invention has targeting property, also has dual effects of cooling and fire extinguishing, and has huge application value.

Description

technical field [0001] The invention relates to the field of fire extinguishing agents, in particular to a microcapsule fire extinguishing agent and a preparation method thereof. Background technique [0002] In recent years, my country's energy storage industry has developed faster and faster, and grid energy storage has increasingly become an important link in my country's energy consumption. Among them, the container-type lithium battery energy storage system is based on lithium-ion batteries. Lithium-ion batteries are energetic substances and have the dangerous nature of fire or explosion. Especially in a closed space, once a certain energy storage unit fires , it will cause a chain fire reaction of multiple adjacent energy storage units and even the explosion of the box, the fire load is large, the danger is high, and it is difficult to fight. Therefore, the safety of lithium-ion battery-based energy storage systems has attracted more and more attention from all walks ...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this fire extinguishing agent is that it does not have the dual functions of cooling and flame retardant fire extinguishing, its shell does not have flame retardant function, and the fire extinguishing function has not been greatly improved.

However, the disadvantage of this microcapsule automatic fire extinguishing agent is that it does not have the dual functions of cooling and flame retardant fire extinguishing, and its shell does not have the flame retardant function.

However, the disadvantage of the flame retardant microcapsules is that it does not have the dual functions of cooling and fire extinguishing, its shell does not have the flame retardant function, and the fire extinguishing function has not been greatly improved.

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