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Compounding of carbon-4 fluoride surfactant and application of compound system preparation method of carbon-4 fluoride surfactant to aqueous film forming foam extinguishing agent

A technology of foam fire extinguishing agent and fluorocarbon surface, which is applied in the direction of fire prevention equipment, dissolution, chemical instruments and methods, etc. It can solve the problems of difficult to achieve foam performance, high foam stability, production difficulty and high cost, and achieve aqueous film-forming spreading Fast speed, good foaming performance and excellent surface activity

Active Publication Date: 2016-07-06
肖进新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN103446943A has proposed the preparation method of the gemini type cationic fluorocarbon surfactant with perfluorobutylsulfonyl fluoride as raw material and the application in the field of aqueous film-forming foam fire extinguishing agent, but this surfactant structure is complicated, and production difficulty and cost are both low. higher
Studies have shown that amphoteric surfactants have better foaming performance, but low foam stability and short foam duration; nonionic surfactants have poor foam performance, but higher foam stability and longer foam duration
Therefore, if these two fluorosurfactants are used alone, it is difficult to achieve the foam performance required by the aqueous film-forming foam fire extinguishing agent.

Method used

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  • Compounding of carbon-4 fluoride surfactant and application of compound system preparation method of carbon-4 fluoride surfactant to aqueous film forming foam extinguishing agent
  • Compounding of carbon-4 fluoride surfactant and application of compound system preparation method of carbon-4 fluoride surfactant to aqueous film forming foam extinguishing agent
  • Compounding of carbon-4 fluoride surfactant and application of compound system preparation method of carbon-4 fluoride surfactant to aqueous film forming foam extinguishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 224.4kg N,N-dimethyl-propylenediamine (2200 moles) and 404.0kg triethylamine (4000 moles) into a 2500L reactor with reflux, add 700L tetrahydrofuran, and stir evenly. Add 604.0kg perfluorobutylsulfonyl fluoride (2000 moles) to it, heat up to 80°C after all the addition, react for 8 hours, evaporate the solvent and excess amine under reduced pressure, wash with water, filter, and dry the filter residue to obtain C 4 f 9 SO 2 NH(CH 2 ) 3 N(CH 3 ) 2 702.0kg, yield 91.4%. 192kgC 4 f 9 SO 2 NH(CH 2 ) 3 N(CH 3 ) 2 (500 mol) in a 2500L reactor, add 200L of ethanol and stir to dissolve it, dissolve 60.6kg of sodium chloroacetate (520 mol) in 240.0kg of deionized water and add it to the reactor, stir and mix well and heat up to 80°C , reacted for 4 hours, and cooled. Ethanol was evaporated under reduced pressure, crystallized by cooling, filtered, and the filter residue was dried to obtain F4H3N(CH 3 )(CH 3 ) C203.6kg, yield 92.1%. Take 1.00kgF4H3N(CH 3 )(C...

Embodiment 2

[0042] Add 278.4kg N,N-dimethyl-butylene diamine (2400 moles) and 242.4kg triethylamine (2400 moles) into a 2500L reactor with reflux, add 600L tetrahydrofuran, and stir evenly. Add 604.0kg perfluorobutylsulfonyl fluoride (2000 moles) to it, heat up to 100°C after all the addition, react for 12 hours, evaporate the solvent and excess amine under reduced pressure, wash with water, filter, and dry the filter residue to obtain C 4 f 9 SO 2 NH(CH 2 ) 4 N(CH3 ) 2 666.2kg, yield 83.7%. 99.5kgC 4 f 9 SO 2 NH(CH 2 ) 4 N(CH 3 ) 2 (250 moles) was placed in a 1000L reactor, and 120L of ethanol was added and stirred to dissolve it. 33.6kg of propane sultone (275 moles) was dissolved in 200L of ethanol and added to the reactor, and the temperature was raised to 90°C after stirring and mixing. React for 7 hours, cool, crystallize, filter, and dry the filter residue to obtain F4H4N(CH 3 )(CH 3 ) S98.3kg, yield 75.6%. Take 1.00kgF4H4N(CH 3 )(CH 3 )S, add 4.00kg deionized wate...

Embodiment 3

[0044] Add 224.4kg N,N-dimethyl-propylenediamine (2200 moles) and 323.2kg triethylamine (3200 moles) into a 2500L reactor with reflux, add 650L tetrahydrofuran, and stir evenly. Add 604.0kg perfluorobutylsulfonyl fluoride (2000 moles) to it, heat up to 70°C after all the addition, react for 10 hours, evaporate the solvent and excess amine under reduced pressure, wash with water, filter, and dry the filter residue to obtain C 4 f 9 SO 2 NH(CH 2 ) 3 N(CH 3 ) 2 696.5kg, yield 90.7%. 192kgC 4 f 9 SO 2 NH(CH 2 ) 3 N(CH 3 ) 2 (500 mol) in a 2500L reactor, add 200L of ethanol and stir to dissolve it, add 102.0kg of 35% hydrogen peroxide (1050 mol) aqueous solution into the reactor, stir, heat up to 70°C, react for 5 hours, and cool. Ethanol was evaporated under reduced pressure, crystallized by cooling, filtered, and the filter residue was dried to obtain F4H3N(CH 3 )(CH 3 ) O176.2kg, yield 88.1%. Take 1.00kgF4H3N(CH 3 )(CH 3 )O, add 4.00kg deionized water, mix to o...

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Abstract

The invention discloses a preparation method of the compound system of a short fluorocarbon chain (the length of the fluorocarbon chain is equal to that of 4 carbons, short for carbon-4) ampholytic nonionic fluorinated surfactant and application thereof to an aqueous film forming foam extinguishing agent, wherein the ampholytic fluorinated surfactant is one of a series of carbon-4 sulfamine alkyl dimethyl betaine or carbon-4 sulfamine sulphobetaine; the nonionic fluorinated surfactant is one of a series of carbon-4 sulfamine amine oxide; the total mass fraction of the two types of fluorinated surfactant is 0.2-10% and the mass ratio of the ampholytic fluorinated surfactant to the nonionic fluorinated surfactant is (10:1)-(1:10) (carbon-4 sulfamine alkyl dimethyl betaine to carbon-4 sulfamine amine oxide or carbon-4 sulfamine sulphobetaine to carbon-4 sulfamine amine oxide), good surface activity, spreading performance and flame extinguishing ability are achieved, and the aqueous film forming foam extinguishing agent formed based on the compound system of the ampholytic nonionic fluorinated surfactant is excellent in fire extinguishing performance.

Description

technical field [0001] The invention relates to a preparation method of a short fluorocarbon chain amphoteric fluorocarbon surfactant-nonionic fluorocarbon surfactant compound system with a fluorocarbon chain length of no more than 4 carbons and its use in an aqueous film-forming foam fire extinguishing agent in the application. Background technique [0002] Fluorine chemicals are a large class of chemicals used in many industrial and commercial applications, including adhesives, cleaning agents, coatings, electronic devices, and more. Among them, fluorosurfactants have the characteristics of high surface activity, high physical and chemical stability, and fluorocarbon chains that are both hydrophobic and oil-repellent, and have irreplaceable uses in many fields, such as aqueous film-forming foam fire extinguishing agents, special fabric finishing agents , Special coatings, etc. [0003] The long fluorocarbon chains contained in fluorosurfactants produced and applied on a ...

Claims

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Application Information

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IPC IPC(8): B01F17/00B01F17/18B01F17/26B01F17/28A62D1/02A62D1/04C09K23/00C09K23/18C09K23/26C09K23/28
CPCA62D1/0085C09K23/018
Inventor 肖进新
Owner 肖进新
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