Nonionic fluorocarbon surfactant suitable for fire extinguishing agent and preparation method thereof

A technology of fluorocarbon surface and active agent, which is applied in the direction of fire prevention equipment, etc., can solve the problems of reburning and not being able to suppress the volatilization of hot oil well, so as to prevent volatilization, control natural and combustion accidents of automobiles, and reduce personnel and property losses Effect

Active Publication Date: 2020-05-22
宁波镇火龙皇环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The fire extinguishing performance of the above patents is good, but the fluorocarbon surfactant can only be used as a film-forming agent in the fire extinguishing agent, which cannot well inhibit the volatilization of hot oil, and easily causes re-ignition and has defects.

Method used

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  • Nonionic fluorocarbon surfactant suitable for fire extinguishing agent and preparation method thereof
  • Nonionic fluorocarbon surfactant suitable for fire extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add tetrahydrofuran 100mL, dodecyl polyoxyethylene ether-25 135.0g (0.105mol) and triethylamine 10.6g (0.105 mol), turn on the stirrer to mix it evenly; slowly add 40.0 g (0.10 mol) of tetrafluoroethylene tetramer dropwise from the dropping funnel, and control the rate of addition to keep the temperature in the reaction bottle below 60°C; After the ethylene tetramer is added dropwise, heat to a slight boil (about 66°C), continue stirring for 6 hours, add about 20 g of anhydrous sodium sulfate, stop stirring, let stand overnight, and filter the solution into a 1L three-necked flask.

[0022] A 1L three-necked flask was equipped with a distillation head, a condenser tube, and a thermometer for distillation, and the THF was distilled off. Add 450g of ethylene glycol butyl ether solution with a mass fraction of 25%, to obtain a fluorocarbon surfactant with a mass fraction of 27-30%. After performance testing, when the mass percentage is 1.0%, its surface tension is 20.2mN / ...

Embodiment 2

[0025] Add tetrahydrofuran 100mL, dodecyl polyoxyethylene ether-35 189.9g (0.110mol) and triethylamine 10.6g (0.105 mol), turn on the stirrer to mix evenly; slowly add 66.4g (0.10mol) of hexafluoropropylene oxide tetramer dropwise from the dropping funnel, and control the rate of addition to keep the temperature in the reaction bottle below 60°C; After the hexafluoropropylene oxide tetramer is added dropwise, heat to a slight boil (about 66°C), continue to stir for 8 hours, add about 25g of anhydrous sodium sulfate, stop stirring, leave it overnight, and filter the solution into a 1L three-necked flask .

[0026] A 1L three-necked flask was equipped with a distillation head, a condenser tube, and a thermometer for distillation, and the THF was distilled off. Add 510 g of ethylene glycol butyl ether solution with a mass fraction of 10%, to obtain a fluorocarbon surfactant with a mass fraction of 27-30%. After performance testing, when the mass percentage is 1.0%, its surface ...

Embodiment 3

[0029] Add isopropyl ether 100mL, lauryl alcohol polyoxyethylene ether-25 154.3g (0.12mol) and triethylamine 10.6g in a 500mL three-necked flask equipped with a reflux condenser tube with a drying tube, a thermometer and a dropping funnel (0.105mol), turn on the stirrer to mix it evenly; slowly add 45.0g (0.10mol) of hexafluoropropylene trimer dropwise from the dropping funnel, and control the rate of addition to keep the temperature in the reaction bottle below 60°C; After the hexafluoropropylene trimer is added dropwise, heat to a slight boil (about 69°C), continue stirring for 10 h, add about 20 g of anhydrous sodium sulfate, stop stirring, let stand overnight, and filter the solution into a 1L three-necked flask.

[0030] A 1L three-necked flask was equipped with a distillation head, a condenser tube, and a thermometer for distillation, and the THF was distilled off. Add 450g of ethylene glycol butyl ether solution with a mass fraction of 40%, to obtain a fluorocarbon surf...

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Abstract

The invention discloses a nonionic fluorocarbon surfactant suitable for fire extinguishing agents, the nonionic fluorocarbon surfactant is characterized in that the fluorocarbon surfactant is a nonionic fluorine surfactant with a fluorocarbon chain at one end, a hydrocarbon chain at the other end and a polyoxyethylene chain structure in the middle, and the structural formula is Rf-(CH2CH2O)n-R, wherein Rf is a hexafluoropropylene oxide trimer or tetramer, a tetrafluoroethylene trimer or tetramer, a hexafluoropropylene dimer or trimer, R is C8-C18 alkyl and C8-C16 alkylbenzene sulfo, and n = 15-35. The nonionic fluorocarbon surfactant suitable for the fire extinguishing agents can improve the covering inhibition performance of the fire extinguishing agents. When foam is sprayed on an oil surface, a dense multiphase composite film is formed at the oil interface, and can effectively prevent volatilization of flammable liquids and oil products and prevent fire from re-burning.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing, in particular to a nonionic fluorocarbon surfactant suitable for a fire extinguishing agent and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's economic construction and the enhancement of comprehensive strength, the petrochemical industry has made great progress. The volume of storage tanks for petroleum and chemical products is getting bigger and bigger, and there are more and more. With such a large-scale tank body and tank area capacity, and the centralized storage of most storage tanks, the probability of fire hazard will increase. If such a fire occurs, it will be difficult to fight and rescue, and it is prone to re-ignition and secondary disasters, causing serious damage. economic losses and casualties. [0003] Oil products are also widely used, and the development of the automobile industry has brought d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/337A62D1/02
CPCA62D1/0064A62D1/0085C08G65/337
Inventor 俞曙
Owner 宁波镇火龙皇环保科技有限公司
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