CN108553788A - A kind of environmental protection temperature sensitive type colloid water mists additive and preparation method thereof - Google Patents
A kind of environmental protection temperature sensitive type colloid water mists additive and preparation method thereof Download PDFInfo
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- CN108553788A CN108553788A CN201810621146.6A CN201810621146A CN108553788A CN 108553788 A CN108553788 A CN 108553788A CN 201810621146 A CN201810621146 A CN 201810621146A CN 108553788 A CN108553788 A CN 108553788A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0064—Gels; Film-forming compositions
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
- A62D1/0035—Aqueous solutions
- A62D1/0042—"Wet" water, i.e. containing surfactant
Abstract
The present invention relates to a kind of environmentally friendly temperature sensitive type colloid water mists additives and preparation method thereof, solve existing Common hydrogels and there is large viscosity, poor fluidity at normal temperatures, be easy to cause Pipeline transport difficulty, block nozzle, while having the shortcomings that toxicity.The additive is made of temperature sensitive substance, dispersant, metal salt, transistion metal compound, surfactant, heat stabilizer；Temperature sensitive substance is methylcellulose；Dispersant is polyethylene glycol and polyvinyl alcohol；Transistion metal compound is ferrocene；The mass ratio of mentioned component is：The heat stabilizer of the methylcellulose of 4%-20%, the polyethylene glycol of 20%-60%, the polyvinyl alcohol of 4%-20%, the metal salt of 10%-60%, the ferrocene of 5%-30%, the surfactant of 1%-30% and 2%-30%.Meanwhile the present invention also provides a kind of preparation methods of above-mentioned environmentally friendly temperature sensitive type colloid water mists additive.
Description
Technical field
The present invention relates to fine mist fire-fighting fields, and in particular to a kind of environmental protection temperature sensitive type colloid water mists additive and its system
Preparation Method.
Background technology
Water mists have that environmental-friendly, fire extinguishing is rapid, water consumption is few, cheap and destructive small etc. to protected object
Advantage is the main substitute of halon fire agent.Common water mists are mainly cooled by vaporization absorbing and cooling temperature, surface,
Starvation asphyxia reduces several extinguishing mechanism collective effects such as heat radiation, stretched flame to inhibit knock down the flame, but right
The problem of extinguishing ability deficiency is still had in some special screne fire, as B class fire is easy to happen resume combustion.One is added in water
Quantitative additive can effectively promote the fire-fighting efficiency of water mists, and common water mist additive mainly has surfactant, excessively
Metallic compound, metallic salt etc..Surfactant can be sprawled by promotion aqueous solution, produce bubble, form emulsion, increase
Add aqueous solution viscosity to promote fine mist fire-fighting efficiency, but the bubble and emulsus film-strength that are formed need to be improved；Transition metal
Oxide is cheap and has very strong flame-out ability, but this substance is usually with insoluble, it is difficult to it is homogeneously dispersed in water,
Limit its development and application；Metal salt can improve fine mist fire-fighting efficiency by inhibiting chemical looping reaction, but this
The shortcomings that additive, is that its aqueous solution has stronger corrosivity, and can be polluted to environment.In conclusion adding for water mist
The research of agent is added to be concentrated mainly on metal salt, transition-metal oxide, surfactant and compound water mist additive, but with
There is the deficiencies of itself for upper additive, and there has been no efficient, the cleaning extinguishment additive agents of universality at present.
The one kind of macromolecule hydrogel as water system additive, it is strong, large viscosity, strong adhesive force excellent with water absorbing capacity
Point, solid water effect is good, can extend the residence time of water, cool rapidly, and plays the role of covering, oxygen barrier, closure, can
Greatly promote the utilization rate and fire-fighting efficiency of water.But the characteristics of due to its large viscosity, poor fluidity, it is tired to be easy to cause Pipeline transport
The shortcomings of difficulty, blocking nozzle, has certain limitation for the field of putting out a fire.Temperature-sensitive hydrogel is one kind of hydrogel, extensively
It is general to apply in biomedicine field, as slow releasing carrier of medication, tissue repair engineering, Wound dressing and other in terms of, have at present
The temperature-sensitive hydrogel that poly(N-isopropylacrylamide) and its derivative synthesize is applied to the technology in fire extinguishing field, but water-setting
It is often contaminated with unreacted monomer, residual initiators or catalyst etc. inside glue, there is certain toxicity, and synthesize macromolecule
Complex process, cost are higher.
Invention content
Present invention aim to address existing Common hydrogels there is large viscosity, poor fluidity at normal temperatures, be easy to cause
Pipeline transport is difficult, blocks the problem of nozzle, while solving that existing temperature-sensitive hydrogel preparation process is complicated, cost is higher, tool
Virose problem provides a kind of environmentally friendly Thermo-sensitive colloid water mists additive, which has dissolved
Adhesiveness is small, gel viscosity big feature when being more than critical transition temperature (LCST), and the additive is nontoxic, corrosion-free, ring
It protects degradable；The preparation process of the additive is simple simultaneously, cheap.
Technical proposal that the invention solves the above-mentioned problems is,
A kind of environmental protection temperature sensitive type colloid water mists additive, by temperature sensitive substance, dispersant, metal salt, transition metal compound
Object, surfactant, heat stabilizer composition；The temperature sensitive substance is methylcellulose；The dispersant is polyethylene glycol and gathers
Vinyl alcohol；The transistion metal compound is ferrocene；The mass ratio of mentioned component is：The methylcellulose of 4%-20%,
The polyethylene glycol of 20%-60%, the polyvinyl alcohol of 4%-20%, the metal salt of 10%-60%, 5%-30% ferrocene,
The surfactant of 1%-30% and the heat stabilizer of 2%-30%.
Further, the mass ratio of mentioned component is：The methylcellulose of 8%-16%, the polyethylene glycol of 20%-40%,
The polyvinyl alcohol of 4%-8%, the metal salt of 12%-40%, the ferrocene of 5%-30%, 16%-30% surfactant and
The heat stabilizer of 2%-10%.
Further, the metal salt is the combination of one or more of sodium chloride, potassium chloride or frerrous chloride.
Further, the surfactant is 12 sodium alkyl benzene sulfonates, sodium sulfate of polyethenoxy ether of fatty alcohol or bay
Alcohol sodium sulphate.
Further, the heat stabilizer is ammonium polyphosphate or methyl-phosphoric acid dimethyl ester.
The present invention also provides a kind of preparation methods of environmentally friendly temperature sensitive type colloid water mists additive, including following step simultaneously
Suddenly：
1) it is 4%-20% methylcellulose by mass ratio and mass ratio is that 20%-60% polyethylene glycol powders are uniformly mixed
After be added to temperature constant magnetic stirring 1-2h in 60-80 DEG C of hot water, stand 12-24h and obtain solution A, the quality of water is first class fiber
40-100 times of quality amount；
2) it is that 4%-20% polyvinyl alcohol is placed in water bath with thermostatic control to take mass ratio, is stirred under the conditions of 90-95 DEG C,
It is configured to 10% B solution；
3) it is by surfactant and mass ratio that metal salt that mass ratio is 10%-60%, mass ratio are 1%-30%
The heat stabilizer of 2%-30% sequentially adds to be stirred until homogeneous in 50-80 DEG C of aqueous solution, C solution is made, the quality of water is metal
30-50 times of salt quality；
4) B solution is added in solution A, solution D is obtained after stirring；
5) it takes the ferrocene powder that 5%-30% grain sizes are 2-30 μm of grain size to be added in solution D to stir evenly, it is molten that E is made
Liquid；
6) C solution is added in E solution, F solution is obtained with screen filtration after stirring；
7) F solution is put at 60-80 DEG C of vacuum drying chamber, dry 12-36h obtains solid temperature-sensitive hydrogel；
8) solid temperature-sensitive hydrogel is crushed to obtain temperature-sensitive hydrogel powder, by temperature-sensitive hydrogel powder sieve
Filtering obtains powdered environmentally friendly Thermo-sensitive colloid water mist additive.
Further, in the step 1), step 2), step 3), step 5), the mass ratio of methylcellulose is 8%-
16%, the mass ratio of polyethylene glycol is 20%-40%, the mass ratio of polyvinyl alcohol is 4%-8%, the mass ratio of metal salt is
12%-40%, ferrocene mass ratio be 5%-30%, the mass ratio of surfactant is 16%-30%, heat-staple quality
Than for 2%-10%.
Further, the metal salt is the combination of one or more of sodium chloride, potassium chloride or frerrous chloride.
Further, the surfactant is 12 sodium alkyl benzene sulfonates, sodium sulfate of polyethenoxy ether of fatty alcohol or bay
Alcohol sodium sulphate.
Further, the heat stabilizer is ammonium polyphosphate or methyl-phosphoric acid dimethyl ester.
Beneficial effects of the present invention are：
1. the present invention is steady using methylcellulose, dispersant, metal salt, transistion metal compound, surfactant and heat
Determine agent and prepare temperature-sensitive hydrogel, and as one kind of water mist additive.The temperature-sensitive hydrogel has viscosity under room temperature
It the advantages of small, good fluidity, overcomes common macromolecule hydrogel and there is large viscosity, poor fluidity at normal temperatures, be easy to cause
The shortcomings of Pipeline transport is difficult, blocking nozzle；Meanwhile the temperature-sensitive hydrogel have at high temperature water absorbing capacity strong, large viscosity,
Strong adhesive force, solid water effect are good, extend the residence time of water, rapid the advantages that cooling, while having covering, oxygen barrier, envelope
Stifled effect.Temperature-sensitive hydrogel prepared by the method for the present invention is nontoxic, corrosion-free, and environmental protection is degradable, and preparation process is simple,
It is cheap, and sprayed using water mists nozzle, further improve the utilization rate of water.
2. the methylcellulose (MC) of the present invention is a kind of Thermo-sensitive material, the property with room temperature colloidal sol, high temperature gel；
Macromolecule polyethylene glycol (PEG) can be wound with methylcellulose (MC), promote methylcellulose (MC) network structure
Hinge, and the stability of solution can be promoted, prevent the sedimentation and cohesion of particulate matter；Polyvinyl alcohol (PVA) can enhance solidifying when high temperature
The intensity of glue, and the stability of solution can be promoted, prevent the sedimentation and cohesion of particulate matter；Metal salt is further by salting out
When reducing critical phase transition temperature (LCST) of gel；Surfactant can reduce colloidal sol by reducing hydrone interfacial surface tension
Viscosity under room temperature；Gel thermal stability can be improved in heat stabilizer；Transistion metal compound can cut down the flue gas of scene of fire, carry
High gel thermal stability.
3. the advantage of temperature-sensitive hydrogel and fine mist fire-fighting is combined by this method, fire-fighting efficiency is greatly improved.This
The temperature-sensitive hydrogel prepared is invented since there is hydrophilic and hydrophobic grouping simultaneously, there is temperature sensitivity, at normal temperatures
Hydrophilic group plays a major role, liquid water suction colloidal sol, good fluidity；When fluid temperature is more than critical phase transition temperature (LCST), dredge
Water base to play a major role, the mutual hinge of macromolecular chain forms the larger gel of viscosity, and colloidal sol is reversible with gel, fire extinguishing
It is influenced to exist with gel form by high temperature in the process, temperature is reduced to after room temperature and can be changed into colloidal sol after fire extinguishing, and residue is easy
Cleaning.
4. the preparation process of the present invention is simple, each component is carried out to physical mixed in order, preparation can be completed, it is at low cost
It is honest and clean；The temperature-sensitive hydrogel of the present invention effectively improves the fire-fighting efficiency of water mists, has with B classes fire to A classes fire and preferably goes out
Fiery effect, it is applied widely.
5. of the invention effectively promote fine mist fire-fighting efficiency and abatement flue gas ability, residue easy to clean of putting out a fire, residue
It is degradable, it not can cause environmental pollution, and each ingredient used is safe from harm to human body, there is nontoxic, degradable, system
The honest and clean feature of standby simple process and low cost.
Specific implementation mode
Present disclosure is described in further detail below in conjunction with specific embodiment：
When temperature-sensitive hydrogel is one kind to be influenced by exterior temperature change, the intelligence of sol-gel phase-state change can occur
Energy type hydrogel, causes the temperature range of phase-state change to be called minimum critical transition temperature (LCST), contains simultaneously in hydrogel
Some hydrophilic radicals and hydrophobic grouping are their ability to realize the root of temperature sensitive effect.Temperature-sensitive hydrogel overcomes common macromolecule
There is the shortcomings that large viscosity, poor fluidity at normal temperatures in hydrogel.
The present invention provides a kind of environmentally friendly Thermo-sensitive colloid water mists additive, which has dissolved glue
Viscosity is small, and gel viscosity big feature when being more than critical transition temperature (LCST) overcomes common macromolecule hydrogel in room temperature
Under there are large viscosity, poor fluidity, the shortcomings of be easy to causeing Pipeline transport difficulty, block nozzle；The additive has nontoxic nothing
Evil, corrosion-free, the degradable feature of environmental protection, preparation process is simple, cheap.
The environmentally friendly temperature sensitive type colloid water mists additive of the present invention, by temperature sensitive substance, dispersant, metal salt, transition metal
Compound, surfactant, heat stabilizer composition；
Wherein：
Temperature sensitive substance is：Methylcellulose (MC), accounts for the 4%-20% of additives ratio；
Dispersant is：Polyethylene glycol (PEG), accounts for the 20%-60% of additives ratio；Polyvinyl alcohol (PVA) accounts for additive
The 4%-20% of ratio；
Metal salt：Sodium chloride (NaCI), potassium chloride (KCI), frerrous chloride (FeCl2) etc. salt nontoxic, soluble easily in water, tool
Body can be one or more combination, account for the 10%-60% of additives ratio；
Transistion metal compound：Ferrocene (C10H10Fe), the 5%-30% of additives ratio is accounted for；
Surfactant is：12 sodium alkyl benzene sulfonates (SDBS), sodium sulfate of polyethenoxy ether of fatty alcohol (AES), laruyl alcohol
Sodium sulphate (SDS) etc., accounts for the 1%-30% of additives ratio；
Heat stabilizer is：The fire retardants nontoxic, soluble easily in water such as ammonium polyphosphate (APP), methyl-phosphoric acid dimethyl ester (MMP),
The 2%-30% of additives ratio is accounted for, mentioned component accounting is mass ratio.
In order to keep the mobility of additive at normal temperatures more preferable, methylcellulose, 20%- that additive can be by 8%-16%
40% polyethylene glycol, the polyvinyl alcohol of 4%-8%, the metal salt of 12%-40%, the ferrocene of 5%-30%, 16%-30%
Surfactant and 2%-10% heat stabilizer composition.
Meanwhile the present invention also provides a kind of preparation methods of above-mentioned environmentally friendly temperature sensitive type colloid water mists additive, including with
Lower step：
1) 4%-20% methylcellulose (MC) and 20%-60% polyethylene glycol (PEG) powder are added after mixing
To temperature constant magnetic stirring 1-2h in 60-80 DEG C of hot water, stands 12-24h and obtain solution A, the quality of water is first class cellulose quality
40-100 times；
2) 4%-20% polyvinyl alcohol is taken, is placed in thermostat water bath, is stirred under the conditions of 90-95 DEG C, is configured
At 10% B solution；
3) then by the heat stabilizer of the metal salt of 10%-60%, the surfactant of 1%-30% and 2%-30% according to
It is stirred until homogeneous in secondary 50-80 DEG C of aqueous solution of addition, C solution is made, the quality of water is 30-50 times of metal salt quality；
4) B solution is added in solution A, solution D is obtained after stirring.
5) it is the ferrocene (C of 2-30 μm of grain size to take 5%-30% grain sizes10H10Fe) powder is added in solution D and stirs to equal
It is even, E solution is made；
6) C solution is added in E solution, F solution is obtained by filtration with 50 or 100 mesh screens after stirring；
7) F solution is put at 60-80 DEG C of vacuum drying chamber, dry 12-36h obtains solid temperature-sensitive hydrogel；
8) solid temperature-sensitive hydrogel is put into crush in medical pulverizer and obtains temperature-sensitive hydrogel powder, by temperature sensitive type
Hydrogel powders are filtered with 50 or 100 mesh screens, finally obtain powdered environmentally friendly Thermo-sensitive colloid water mist additive.
Embodiment 1
The preparation process of the environmentally friendly temperature sensitive type colloid water mists additive of the present embodiment is as follows：
1) 50g methylcellulose (MC) and 220g polyethylene glycol (PEG) powder are added to 5kg temperature after mixing is
Temperature constant magnetic stirring 2h in 65 DEG C of hot water stands 12h and obtains solution A；
2) it takes 50g polyvinyl alcohol to be put into 500g water, is placed in thermostat water bath, stirred under the conditions of 90 DEG C,
It is configured to 10% B solution；
3) then that 500g sodium chloride (NaCI)/potassium chloride (KCI), 12 sodium alkyl benzene sulfonates (SDBS) of 80g and 80g is poly-
It is to be stirred until homogeneous in 60 DEG C of aqueous solutions that ammonium phosphate (APP), which sequentially adds 20kg temperature, and C solution is made；
4) it takes B solution to be all added in solution A, solution D is obtained after stirring；
5) it is the ferrocene (C of 2-30 μm of grain size to take 80g grain sizes10H10Fe) powder is added in solution D and is stirred until homogeneous, and makes
At E solution；
6) it takes C solution to be added in E solution, E solution is obtained by filtration with 50 mesh screens after stirring；
7) F solution is put at 70 DEG C of vacuum drying chamber, drying obtains solid temperature-sensitive hydrogel for 24 hours；
8) solid temperature-sensitive hydrogel is put into crush in medical pulverizer and obtains temperature-sensitive hydrogel powder, by temperature sensitive type
Hydrogel powders are filtered with 100 mesh screens, finally obtain powdered environmentally friendly Thermo-sensitive colloid water mist additive.
The application method of the environmentally friendly temperature sensitive type colloidal additive of the present embodiment is as follows：
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of A class fire is carried out under 1Mpa atomizing pressures
Experiment, the Wood crib Fire of A class fire we selected typicals, dry batten size is 100mm × 10mm × 10mm, totally 10 layers, every layer 8 of the grillage of system
Root uses 80 dry battens altogether.Grillage is ignited 2min, starts to put out a fire after its flameholding, attack time is shown in Table 1.
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 10% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of B class fire is carried out under 1Mpa atomizing pressures
Experiment, B class fire select diesel oil fire, are contained with the disk that diameter and height are respectively 10cm and 2cm, after diesel oil is ignited 200s,
It forms stable flame to start to put out a fire again, attack time is shown in Table 2.
Embodiment 2
The preparation process of the environmentally friendly temperature sensitive type colloid water mists additive of the present embodiment is as follows：
1) 65g methylcellulose (MC) and 680g polyethylene glycol (PEG) powder are added to 5kg temperature after mixing is
Temperature constant magnetic stirring 2h in 65 DEG C of hot water stands 12h and obtains solution A；
2) it takes 65g polyvinyl alcohol to be put into 500g water, is placed in thermostat water bath, stirred under the conditions of 90 DEG C,
It is configured to 10% B solution；
3) then that 500g sodium chloride (NaCI)/potassium chloride (KCI), 12 sodium alkyl benzene sulfonates (SDBS) of 80g and 80g is poly-
It is to be stirred until homogeneous in 60 DEG C of aqueous solutions that ammonium phosphate (APP), which sequentially adds 20kg temperature, and C solution is made；
4) it takes B solution to be all added in solution A, solution D is obtained after stirring；
5) it is the ferrocene (C of 2-30 μm of grain size to take 80g grain sizes10H10Fe) powder is added in solution D and is stirred until homogeneous, and makes
At E solution；
6) it takes C solution to be added in E solution, E solution is obtained by filtration with 50 mesh screens after stirring；
7) F solution is put at 70 DEG C of vacuum drying chamber, drying obtains solid temperature-sensitive hydrogel for 24 hours；
8) solid temperature-sensitive hydrogel is put into crush in medical pulverizer and obtains temperature-sensitive hydrogel powder, by temperature sensitive type
Hydrogel powders are filtered with 100 mesh screens, finally obtain powdered environmentally friendly Thermo-sensitive colloid water mist additive.
The application method of the environmentally friendly temperature sensitive type colloidal additive of the present embodiment is as follows：
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of A class fire is carried out under 1Mpa atomizing pressures
Experiment, the Wood crib Fire of A class fire we selected typicals, dry batten size is 100mm × 10mm × 10mm, totally 10 layers, every layer 8 of the grillage of system
Root uses 80 dry battens altogether.Grillage is ignited 2min, starts to put out a fire after its flameholding, attack time is shown in Table 1.
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of B class fire is carried out under 1Mpa atomizing pressures
Experiment, B class fire select diesel oil fire, are contained with the disk that diameter and height are respectively 10cm and 2cm, after diesel oil is ignited 200s,
It forms stable flame to start to put out a fire again, attack time is shown in Table 2.
Embodiment 3
The preparation process of the environmentally friendly temperature sensitive type colloid water mists additive of the present embodiment is as follows：
1) 250g methylcellulose (MC) and 265g polyethylene glycol (PEG) powder are added to 10kg temperature after mixing
For temperature constant magnetic stirring 2h in 65 DEG C of hot water, stands 12h and obtain solution A；
2) it takes 60g polyvinyl alcohol to be put into 500g water, is placed in thermostat water bath, stirred under the conditions of 90 DEG C,
It is configured to 10% B solution；
3) then that 500g sodium chloride (NaCI)/potassium chloride (KCI), 12 sodium alkyl benzene sulfonates (SDBS) of 80g and 80g is poly-
It is to be stirred until homogeneous in 60 DEG C of aqueous solutions that ammonium phosphate (APP), which sequentially adds 20kg temperature, and C solution is made；
4) it takes B solution to be all added in solution A, solution D is obtained after stirring；
5) it is the ferrocene (C of 2-30 μm of grain size to take 80g grain sizes10H10Fe) powder is added in solution D and is stirred until homogeneous, and makes
At E solution；
6) it takes C solution to be added in E solution, E solution is obtained by filtration with 50 mesh screens after stirring；
7) F solution is put at 70 DEG C of vacuum drying chamber, drying obtains solid temperature-sensitive hydrogel for 24 hours；
8) solid temperature-sensitive hydrogel is put into crush in medical pulverizer and obtains temperature-sensitive hydrogel powder, by temperature sensitive type
Hydrogel powders are filtered with 100 mesh screens, finally obtain powdered environmentally friendly Thermo-sensitive colloid water mist additive.
The application method of the environmentally friendly temperature sensitive type colloidal additive of the present embodiment is as follows：
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of A class fire is carried out under 1Mpa atomizing pressures
Experiment, the Wood crib Fire of A class fire we selected typicals, dry batten size is 100mm × 10mm × 10mm, totally 10 layers, every layer 8 of the grillage of system
Root uses 80 dry battens altogether.Grillage is ignited 2min, starts to put out a fire after its flameholding, attack time is shown in Table 1.
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of B class fire is carried out under 1Mpa atomizing pressures
Experiment, B class fire select diesel oil fire, are contained with the disk that diameter and height are respectively 10cm and 2cm, after diesel oil is ignited 200s,
It forms stable flame to start to put out a fire again, attack time is shown in Table 2.
Embodiment 4
The preparation process of the environmentally friendly temperature sensitive type colloid water mists additive of the present embodiment is as follows：
1) 300g methylcellulose (MC) and 600g polyethylene glycol (PEG) powder are added to 12kg temperature after mixing
For temperature constant magnetic stirring 2h in 65 DEG C of hot water, stands 12h and obtain solution A；
2) it takes 70g polyvinyl alcohol to be put into 500g water, is placed in thermostat water bath, stirred under the conditions of 90 DEG C,
It is configured to 10% B solution；
3) then that 500g sodium chloride (NaCI)/potassium chloride (KCI), 12 sodium alkyl benzene sulfonates (SDBS) of 80g and 80g is poly-
It is to be stirred until homogeneous in 60 DEG C of aqueous solutions that ammonium phosphate (APP), which sequentially adds 20kg temperature, and C solution is made；
4) it takes B solution to be all added in solution A, solution D is obtained after stirring；
5) it is the ferrocene (C of 2-30 μm of grain size to take 90g grain sizes10H10Fe) powder is added in solution D and is stirred until homogeneous, and makes
At E solution；
6) it takes C solution to be added in E solution, E solution is obtained by filtration with 50 mesh screens after stirring；
7) F solution is put at 70 DEG C of vacuum drying chamber, drying obtains solid temperature-sensitive hydrogel for 24 hours；
8) solid temperature-sensitive hydrogel is put into crush in medical pulverizer and obtains temperature-sensitive hydrogel powder, by temperature sensitive type
Hydrogel powders are filtered with 100 mesh screens, finally obtain powdered environmentally friendly Thermo-sensitive colloid water mist additive.
The application method of the environmentally friendly temperature sensitive type colloidal additive of the present embodiment is as follows：
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of A class fire is carried out under 1Mpa atomizing pressures
Experiment, the Wood crib Fire of A class fire we selected typicals, dry batten size is 100mm × 10mm × 10mm, totally 10 layers, every layer 8 of the grillage of system
Root uses 80 dry battens altogether.Grillage is ignited 2min, starts to put out a fire after its flameholding, attack time is shown in Table 1.
Powdered environmentally friendly Thermo-sensitive colloid water mist additive is added to the water, is configured to containing 6% environmentally friendly Thermo-sensitive colloid
The aqueous solution prepared is added in pressurized tank the aqueous solution of water mist additive, and the fire extinguishing of B class fire is carried out under 1Mpa atomizing pressures
Experiment, B class fire select diesel oil fire, are contained with the disk that diameter and height are respectively 10cm and 2cm, after diesel oil is ignited 200s,
It forms stable flame to start to put out a fire again, attack time is shown in Table 2.
Table 1A class Wood crib Fire fire-extinguishing test results
Table 2B class diesel oil fire fire-extinguishing test results
Claims (10)
1. a kind of environmental protection temperature sensitive type colloid water mists additive, it is characterised in that：By temperature sensitive substance, dispersant, metal salt, transition
Metallic compound, surfactant, heat stabilizer composition；
The temperature sensitive substance is methylcellulose；
The dispersant is polyethylene glycol and polyvinyl alcohol；
The transistion metal compound is ferrocene；
The mass ratio of mentioned component is：The methylcellulose of 4%-20%, the polyethylene glycol of 20%-60%, 4%-20% it is poly-
The heat of vinyl alcohol, the metal salt of 10%-60%, the ferrocene of 5%-30%, the surfactant of 1%-30% and 2%-30%
Stabilizer.
2. environmental protection temperature sensitive type colloid water mists additive according to claim 1, it is characterised in that：The quality of the ingredient
Than for：The gold of the methylcellulose of 8%-16%, the polyethylene glycol of 20%-40%, the polyvinyl alcohol of 4%-8%, 12%-40%
Belong to the heat stabilizer of salt, the ferrocene of 5%-30%, the surfactant of 16%-30% and 2%-10%.
3. environmental protection temperature sensitive type colloid water mists additive according to claim 2, it is characterised in that：The metal salt is chlorine
Change the combination of one or more of sodium, potassium chloride or frerrous chloride.
4. environmental protection temperature sensitive type colloid water mists additive according to claim 1 or 2 or 3, it is characterised in that：The surface
Activating agent is 12 sodium alkyl benzene sulfonates, sodium sulfate of polyethenoxy ether of fatty alcohol or sldium lauryl sulfate.
5. environmental protection temperature sensitive type colloid water mists additive according to claim 4, it is characterised in that：The heat stabilizer is
Ammonium polyphosphate or methyl-phosphoric acid dimethyl ester.
6. a kind of preparation method of environmental protection temperature sensitive type colloid water mists additive, which is characterized in that include the following steps：
1) it is 4%-20% methylcellulose by mass ratio and mass ratio is that 20%-60% polyethylene glycol powders add after mixing
Enter into 60-80 DEG C of hot water temperature constant magnetic stirring 1-2h, stands 12-24h and obtain solution A, the quality of water is first class cellulose material
40-100 times of amount；
2) it is that 4%-20% polyvinyl alcohol is placed in water bath with thermostatic control to take mass ratio, stirs, configures under the conditions of 90-95 DEG C
At 10% B solution；
3) it is 2%- by surfactant and mass ratio that metal salt that mass ratio is 10%-60%, mass ratio are 1%-30%
30% heat stabilizer sequentially adds to be stirred until homogeneous in 50-80 DEG C of aqueous solution, C solution is made, the quality of water is metal salt matter
30-50 times of amount；
4) B solution is added in solution A, solution D is obtained after stirring；
5) it takes the ferrocene powder that 5%-30% grain sizes are 2-30 μm of grain size to be added in solution D to stir evenly, E solution is made；
6) C solution is added in E solution, F solution is obtained with screen filtration after stirring；
7) F solution is put at 60-80 DEG C of vacuum drying chamber, dry 12-36h obtains solid temperature-sensitive hydrogel；
8) solid temperature-sensitive hydrogel is crushed to obtain temperature-sensitive hydrogel powder, by temperature-sensitive hydrogel powder sieve mistake
Filter obtains powdered environmentally friendly Thermo-sensitive colloid water mist additive.
7. the preparation method of environmental protection temperature sensitive type colloid water mists additive according to claim 6, it is characterised in that：It is described
In step 1), step 2), step 3), step 5), the mass ratio of methylcellulose is 8%-16%, the mass ratio of polyethylene glycol is
20%-40%, polyvinyl alcohol mass ratio be 4%-8%, the mass ratio of metal salt is 12%-40%, the mass ratio of ferrocene
Mass ratio for 5%-30%, surfactant is 16%-30%, heat-staple mass ratio is 2%-10%.
8. the preparation method of the environmentally friendly temperature sensitive type colloid water mists additive described according to claim 6 or 7 or 8, feature exist
In：The metal salt is the combination of one or more of sodium chloride, potassium chloride or frerrous chloride.
9. the preparation method of environmental protection temperature sensitive type colloid water mists additive according to claim 8, it is characterised in that：It is described
Surfactant is 12 sodium alkyl benzene sulfonates, sodium sulfate of polyethenoxy ether of fatty alcohol or sldium lauryl sulfate.
10. the preparation method of environmental protection temperature sensitive type colloid water mists additive according to claim 9, it is characterised in that：Institute
It is ammonium polyphosphate or methyl-phosphoric acid dimethyl ester to state heat stabilizer.
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| CN110917555A (en) * | 2019-11-20 | 2020-03-27 | 西安科技大学 | Space full-coverage guide type magnetoelectric water mist fire extinguishing material and fire extinguishing device |
| CN111013078A (en) * | 2019-12-09 | 2020-04-17 | 西安近代化学研究所 | Semi-solid fire extinguishing agent for forest blasting fire extinguishing bomb and preparation method thereof |
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| CN110404225A (en) * | 2019-08-26 | 2019-11-05 | 西安科技大学 | A kind of environment-friendly type macromolecule colloid extinguishment additive agent and its preparation method and application |
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| CN110917555B (en) * | 2019-11-20 | 2021-08-06 | 西安科技大学 | Space full-coverage guide type magnetoelectric water mist fire extinguishing material and fire extinguishing device |
| CN111013078A (en) * | 2019-12-09 | 2020-04-17 | 西安近代化学研究所 | Semi-solid fire extinguishing agent for forest blasting fire extinguishing bomb and preparation method thereof |
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