Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aqueous film-forming foam fire extinguishing agent based on c4 twinned fluorosurfactant

A technology of fluorosurfactant and foam fire extinguishing agent, which is applied in the field of fire-fighting consumables, can solve the problems of high product cost, cumbersome purification steps, complicated process, etc., and achieve good recombustion resistance and sealing performance, high fire extinguishing efficiency and long storage period long effect

Active Publication Date: 2020-06-05
浙江睦田消防科技开发有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the short fluorocarbon chain twinned fluorosurfactants disclosed in the above patents have not been applied in the field of AFFF
[0006] The Chinese invention patent (publication number: CN103446943A) uses perfluoroalkylsulfonyl fluoride (the carbon number of the fluorocarbon chain is 4 or 6), p-hydroxybenzyl alcohol, tetramethylalkyldiamine, thionyl chloride, etc. as raw materials , cationic twinned fluorosurfactants were prepared by esterification, chlorine substitution, quaternization and other steps, and applied in the field of AFFF, but the raw material price of this patent is relatively expensive, the process is complicated, the purification steps are cumbersome, and the product cost is high. limited prospects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aqueous film-forming foam fire extinguishing agent based on c4 twinned fluorosurfactant
  • Aqueous film-forming foam fire extinguishing agent based on c4 twinned fluorosurfactant
  • Aqueous film-forming foam fire extinguishing agent based on c4 twinned fluorosurfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of C4 twinned fluorosurfactant:

[0039] Perfluorobutylsulfonyl fluoride C 4 f 9 SO 2 F reacts with glycidol to prepare glycidyl perfluorobutanesulfonate: add perfluorobutylsulfonyl fluoride to tetrahydrofuran solution of glycidol and triethylamine at 0°C, heat up to 50°C after all addition, and stir for reaction After 5 hours, the reaction was cooled down to room temperature, the solvent and excess triethylamine were evaporated to dryness under reduced pressure, the residue was washed with water until pH=7.5 of the lotion, and a white solid was obtained after vacuum filtration under reduced pressure, which was vacuum-dried at 60°C for 24 hours to obtain complete Glycidyl fluorobutane sulfonate, a white solid. The molar ratio of raw materials is perfluorobutylsulfonyl fluoride: glycidol: triethylamine=1:1.1:1.6.

[0040] Preparation of fluorine-containing intermediates by ring-opening reaction between glycidyl perfluorobutanesulfonate and alkyldiamine: d...

Embodiment 2

[0047] The preparation method of the C4 twinned fluorosurfactant is the same as in Example 1, and n=2 in the structural formula of the obtained C4 twinned fluorosurfactant.

[0048] In 2000 liters of reactors, add deionized water 500kg, add sodium decylsulfonate (C 10 h 21 SO 3 Na) 30kg, Xanthan Gum 10kg, Urea 20kg, Ethylene Glycol Monobutyl Ether 10kg, 1,2-Propanediol 40kg, stir to make it fully dissolved, slowly add F4H6 80kg, stir to dissolve, then add trimethylol Aminomethane aqueous solution 1kg, sodium benzoate 2kg, edetate disodium salt 1kg, benzotriazole 1kg, deionized water 305kg, stirred for 1 hour to obtain a colorless and clear homogeneous solution, that is, the total mass is 1 ton, which is 6 % type aqueous film-forming foam fire extinguishing agent.

Embodiment 3

[0050] The preparation method of the C4 twinned fluorosurfactant is the same as in Example 1, and n=2 in the structural formula of the obtained C4 twinned fluorosurfactant.

[0051] In 2000 liters of reactors, add deionized water 500kg, add lauryl betaine (C 12 h 25 N + (CH 3 ) 2 -CH 2 -COO - ) 30kg, xanthan gum 1kg, water-soluble starch 4kg, ethylene glycol monobutyl ether 30kg, glycerin 40kg, stir to make it fully dissolved, slowly add F4H3 60kg, stir to dissolve, then add trimethylolamino 1kg of methane aqueous solution, 2kg of formaldehyde aqueous solution, 1kg of EDTA disodium salt, 1kg of benzotriazole, 330kg of deionized water, stirred for 1 hour to obtain a colorless and clear homogeneous solution, that is, the total mass is 1 ton, which is 6% Aqueous film-forming foam fire extinguishing agent.

[0052] The 6% aqueous film-forming foam fire extinguishing agent obtained in the above-mentioned embodiments 1-3 is self-inspected according to GB15308-2006 "Foam Fire ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an aqueous film-forming foam fire extinguishing agent based on a C4 gemini fluorinated surfactant and belongs to the technical field of fire protection consumable items. The structural formula of the C4 gemini fluorinated surfactant is shown in the specifications, wherein n is equal to 2-6. The aqueous film-forming foam fire extinguishing agent which is prepared with anion C4 gemini fluorinated surfactant with the fluorocarbon chain length being 4 carbons as a core component does not contain PFOA / PFOS and is economical and environmentally friendly. The prepared aqueous film-forming foam fire extinguishing agent can form a water film restraining oil evaporation on the oil surface, reduce the flame temperature, cut off fuel feeding and meanwhile isolate fuel and air, rapid fire extinguishing is achieved by comprehensively using cooling, isolating and stifling mechanisms, and the aqueous film-forming foam fire extinguishing agent has the beneficial effects of being high in fire extinguishing efficiency, high in speed, good in anti-combustion property and sealing capability, long in storage time and the like.

Description

technical field [0001] The invention relates to an aqueous film-forming foam fire extinguishing agent, in particular to an aqueous film-forming foam fire extinguishing agent based on a C4 twinned fluorosurfactant, and belongs to the technical field of fire-fighting consumables. Background technique [0002] Aqueous film-forming foam fire extinguishing agent (AFFF for short) consists of fluorosurfactants, hydrocarbon surfactants, foam stabilizers, thickeners, anti-burning agents, co-solvents, buffers, Composed of freezing agent, metal corrosion inhibitor, antibacterial agent and chelating agent, it is a high-efficiency foam fire extinguishing agent. AFFF can spontaneously form a layer of water film on the surface of oil to inhibit oil evaporation, reduce the flame temperature, cut off fuel delivery, and at the same time isolate fuel and air, and comprehensively use cooling, isolation and suffocation mechanisms to achieve rapid fire extinguishing, with high fire extinguishing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/02A62D1/04C07C303/30C07C309/65
CPCA62D1/0064A62D1/0071C07C303/30C07C309/65C07D301/00C07D303/16
Inventor 葛峰姜红红姜塍林
Owner 浙江睦田消防科技开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com