Microcapsule fire extinguishing agent and preparation method thereof

A technology of microcapsule and fire extinguishing agent, which is applied in the field of microcapsule fire extinguishing agent and its preparation, which can solve the problems of not having cooling and flame retardant fire extinguishing, the shell does not have flame retardant function, and the fire extinguishing function has not been greatly improved. , to achieve the effects of excellent external temperature thermal response function, excellent environmental protection performance and flame retardant performance, and excellent flame retardant performance

Active Publication Date: 2021-04-16
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 du

Method used

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  • Microcapsule fire extinguishing agent and preparation method thereof
  • Microcapsule fire extinguishing agent and preparation method thereof
  • Microcapsule fire extinguishing agent and preparation method thereof

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preparation example Construction

[0039] see figure 1 As shown, the present invention provides a kind of preparation method of microcapsule fire extinguishing agent, specifically adopts in-situ polymerization method, comprises the steps:

[0040] S1. Prepare a predetermined amount of the cooling material solution, add it into a closed reaction vessel, heat it to 60-90°C, and set the reaction pressure to 1.0-1.50Mpa;

[0041] S2. Add a predetermined proportion of the low-melting-point polymer monomer and the flame retardant into the airtight reaction container described in step S1 in sequence, and finally add a predetermined amount of initiator benzoyl peroxide, stir and process, polymerization reaction 2 ~8h, preparing microcapsule particles formed by coating the cooling material with the low melting point copolymer;

[0042] S3. Washing and drying the microcapsule particles prepared in step S2 to obtain the microcapsule fire extinguishing agent.

[0043] Preferably, the mass ratio of the low-melting polymer...

Embodiment 1

[0049] The preparation method of microcapsule fire extinguishing agent:

[0050] S1. Prepare 30g of cooling material fluorinated ketone solution, add it into a closed reaction vessel, heat to 80°C, and set the reaction pressure to 1.0Mpa;

[0051] S2. Add styrene, methyl methacrylate, methacrylic acid and 2-bromo-3,3,3-trifluoropropene with a total mass of 3.3 g to the closed reaction vessel described in step S1 in sequence, and finally add the initiator Benzoyl peroxide, stirred, polymerized for 2 hours, prepared from styrene (St)-methyl methacrylate (MMA)-methacrylic acid (MAA)-2-bromo-3,3,3-trifluoro Microcapsule particles formed by coating fluorinated ketones with propylene (BTP) quaternary copolymerization shell;

[0052] Wherein, in the mass sum of the quaternary comonomers, the mass fractions of the styrene, the methyl methacrylate, the methacrylic acid and the 2-bromo-3,3,3-trifluoropropene are respectively 30%, 20%, 40% and 10%. The addition amount of described ben...

Embodiment 2

[0058] The preparation method of microcapsule fire extinguishing agent:

[0059] S1. Prepare 50g of cooling material fluorinated ketone solution, add it into a closed reaction vessel, heat to 70°C, and set the reaction pressure to 1.5Mpa;

[0060] S2. Add styrene, methyl methacrylate, methacrylic acid and 2-bromo-3,3,3-trifluoropropene with a total mass of 0.5 g to the closed reaction vessel described in step S1 in sequence, and finally add the initiator Benzoyl peroxide, stirred, polymerized for 4h, prepared from styrene (St)-methyl methacrylate (MMA)-methacrylic acid (MAA)-2-bromo-3,3,3-trifluoro Microcapsule particles formed by coating fluorinated ketones with propylene (BTP) quaternary copolymerization shell;

[0061] Wherein, in the mass sum of the quaternary comonomers, the mass fractions of the styrene, the methyl methacrylate, the methacrylic acid and the 2-bromo-3,3,3-trifluoropropene are respectively 30%, 20%, 40% and 10%; the added amount of benzoyl peroxide is 0....

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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 ...

Claims

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Application Information

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IPC IPC(8): A62D1/00C08F220/06C08F220/14C08F212/08C08F214/18B01J13/14
Inventor 曹元成汤舜程时杰
Owner HUAZHONG UNIV OF SCI & TECH
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