CN1413749A

CN1413749A - Foam extingusher with covering function

Info

Publication number: CN1413749A
Application number: CN 02135849
Authority: CN
Inventors: 俞雪兴; 吴京峰; 谈龙妹; 姜素霞
Original assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Current assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Priority date: 2002-12-04
Filing date: 2002-12-04
Publication date: 2003-04-30
Anticipated expiration: 2022-12-04
Also published as: CN1193807C

Abstract

A fire-extinguishing foaming chemical with covering function features that it contains F1157N or F1203, F3 or OBS or FC-4, JR-400 or sodium algate or CMC or HEC or cationic starch or chitosan or xanthan gum, CAB or LAB or MZL or K12 or APG, ethanediol butylether or propanediol butylether, glycol or diglycol or propanetriol, urea, anticorrosion agent and water through proportioning and compounding. Its advantages are high fire-extinguishing power, strong covering function and high effect on preventing evaporation of oil.

Description

Fire foam with covering function

Technical field

The present invention relates to a kind of fire foam, particularly relate to a kind of fire foam with covering function.

Technical background

Fire foam is used for fire-fighting fire extinguishing all report at home and abroad, and aqueous film-forming foam extinguishing agent (being called for short AFFF) is representative.The sixties, USN at first succeeded in developing this extinguishing chemical, to the flourishing country's extensive use of some industry of late nineteen seventies.This type of extinguishing chemical of domestic development is later, and the eighties is succeeded in developing first generation aqueous film-forming foam extinguishing agent by the Tianjin fire house.Constantly improve and raising through the scientific research personnel, present domestic aqueous film-forming foam extinguishing agent technology is mature on the whole, when this extinguishing chemical goes out the oils fire, on pasta, form water membrane, by the fire extinguishing of foam and moisture film double action, it have blow-off velocity fast, render a service high, closed performance is good, the storage life is long characteristics such as (20 years).So after succeeding in developing, promptly obtained development fast.But the foam that generates when its shortcoming is to use retention time on oil product is short, and foam can lose efficacy because of a large amount of bleeds, can not cover oil product and avoid evaporating, prevents poisonous and harmful, inflammable and explosive, Hazardous Chemical Substances leakage.As being used for the fire foam that fire-fighting fire extinguishing has covering function again, up to the present there is no report both at home and abroad.

Summary of the invention

The purpose of this invention is to provide a kind of fire foam with covering function, it can overcome

The above-mentioned shortcoming of prior art.

A kind of fire foam with covering function is characterized in that containing F1157N or F1203, F3 or OBS or FC-4, JR-400 or sodium alginate or CMC or HEC or cationic starch or shitosan or xanthans, CAB or LAB or MZL or K12 or APG, butyl glycol ether or propane diols butyl ether, ethylene glycol or diethylene glycol or their part by weight scope of glycerine, urea, anticorrisive agent and water is respectively 1-6: 0.01-0.5: 0.01-2.0: 2-20: 1-7: 1-10: 2-8: 0.1-1 and 30-70.

A kind of method for preparing fire foam with covering function, it is characterized in that branch another name F1157N or F1203, butyl glycol ether or propane diols butyl ether, F3 or OBS or FC-4, CAB or LAB or MZL or K12 or APG composition mixture A, take by weighing JR-400 or sodium alginate or CMC or HEC or cationic starch or shitosan or xanthans, ethylene glycol or diethylene glycol or glycerine, urea, water again, composition mixture B, A is added among the B, stir, add anticorrisive agent at last, be stirred to and be clear solution, accent PH to 7.5-8.5.

Fire foam of the present invention had both had extinguishing property and anti-resume combustion performance preferably, and powerful covering function is arranged again; Can put out a fire, cover with low-expansion foam, again can be with middle and high times of foam fire-fighting, covering.Particularly can suppress oil evaporation effectively, in a few hours, can reach more than 95% the oil evaporation inhibiting rate, for reducing since serious accidents such as the fire that the oil product that contingency causes leakage causes, blast have a positive effect.This product processes is simple, and energy consumption is low, and the no three wastes produce.Do not pollute the environment in production process and practical application, each component is all biodegradable.

The specific embodiment

Embodiment 1: take by weighing F1157N 3.0Kg, butyl glycol ether 6.0Kg, F3 0.2Kg, CAB 16.0Kg composition mixture A respectively, take by weighing sodium alginate 1.0Kg, ethylene glycol 5.0kg, urea 3.0Kg, water 65.0Kg again, composition mixture B, A is added among the B, stir, add anticorrisive agent formaldehyde 0.2Kg at last, be stirred to and be clear solution, transfer PH to 8.2, product promptly of the present invention with 10% NaOH.

F in the present embodiment ₃Can use OBS or FC-4 instead, CAB can use LAB or MZL or K12 or APG instead, and sodium alginate can be used JR-400 or CMC or HEC or cationic starch or shitosan or xanthans instead, and ethylene glycol can be used diethylene glycol or glycerine instead.

Embodiment 2: take by weighing F1203 5.0Kg, propane diols butyl ether 3.0Kg, OBS 0.4Kg, LAB 10.0Kg respectively and form A, take by weighing JR-400 0.7Kg, glycerine 8.0Kg again, urea 5.0Kg, water 46.0Kg form B, A is added among the B, stir, add preservative sodium benzoate 0.6Kg at last, be stirred to and be clear solution, transfer PH to 8.5, add buffering with 10% NaOH

This product all reaches the GB17427-1998 requirement with water by every physical and chemical performance of the solution of 6: 94 ratio mixed preparing and extinguishing property.With this product to 90 of volatility maximum ^#Motor petrol is made fire-extinguishing test.The concrete technical indicator that reaches is as follows:

	Project	Requirement	Actual measurement
	Project	Requirement	Actual measurement		PH value	????6.0-9.5	????8.2
	Diffusion coefficient	????≥0	????3.5		PH value	????6.0-9.5	????8.2
	Diffusion coefficient	????≥0	????3.5		Inhibiting rate %	Do not have	????98
Low power	Coefficient of foaming	????≥5.0	????8.0		Inhibiting rate %	Do not have	????98
Low power	Coefficient of foaming	????≥5.0	????8.0	Low power	25% drainage time (min)	????≥2.5	????4.5
Low power	Going out, gasoline fire time (min) is slow to be applied	????≤5.0	????1.0	Low power	25% drainage time (min)	????≥2.5	????4.5
Low power	Going out, gasoline fire time (min) is slow to be applied	????≤5.0	????1.0	In doubly	Coefficient of foaming	????≥20	????55

Used noun among the present invention: F1157N is the perfluoroalkyl betaine; F1203 is fluorocarbon surfactant and hc-surfactant compound; F3 is the hot sulfonyl quaternary ammonium salt of perfluor; OBS is the perfluoro alkoxy benzene sulfonic acid sodium salt; FC-4 is a perfluor polyoxypropylene quaternary ammonium iodide; CAB is a cocamidopropyl betaine; LAB is the dodecanamide propyl betaine; MZL is 1-ethoxy-1-carboxymethyl-alkyl imidazoline, and APG is an APG, and K12 is a lauryl sodium sulfate; JR-400 is a cation cellulose ether; CMC is a sodium carboxymethylcellulose, and HEC is a hydroxyethylcellulose, and cushioning liquid is potassium dihydrogen phosphate and sodium hydrogen phosphate mixed solution.

Claims

1, a kind of fire foam with covering function, it is characterized in that containing F1157N or F1203, F3 or OBS or FC-4, JR-400 or sodium alginate or CMC or HEC or cationic starch or shitosan or xanthans, CAB or LAB or MZL or K12 or APG, butyl glycol ether or propane diols butyl ether, ethylene glycol or diethylene glycol or glycerine, urea, anticorrisive agent and water, their part by weight scope is respectively 1-6: 0.01-0.5: 0.01-2.0: 2-20: 1-7: 1-10: 2-8: 0.1-1 and 30-70.

2, a kind of method for preparing fire foam with covering function, it is characterized in that taking by weighing respectively F1157N or F1203, butyl glycol ether or propane diols butyl ether, F3 or OBS or FC-4, CAB or LAB or MZL or K12 or APG composition mixture A, take by weighing JR-400 or sodium alginate or CMC or HEC or cationic starch or shitosan or xanthans, ethylene glycol or diethylene glycol or glycerine, urea, water again, composition mixture B, A is added among the B, stir, add anticorrisive agent at last, be stirred to and be clear solution, accent PH to 7.5-8.5.

3, fire foam as claimed in claim 1 is characterized in that also containing cushioning liquid or/and polyethylene glycol, and their part by weight scope is respectively 1-8 and 2-10.