CN105169613A - Lithium battery and hydrogel for packaging element combustion treatment of lithium battery - Google Patents
Lithium battery and hydrogel for packaging element combustion treatment of lithium battery Download PDFInfo
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- CN105169613A CN105169613A CN201510494797.XA CN201510494797A CN105169613A CN 105169613 A CN105169613 A CN 105169613A CN 201510494797 A CN201510494797 A CN 201510494797A CN 105169613 A CN105169613 A CN 105169613A
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Abstract
The invention belongs to the technical field of lithium batteries and packaging element combustion treatment, and relates to a lithium battery and hydrogel for packaging element combustion treatment of the lithium battery. The hydrogel comprises, by mass, 0.5-40 parts of hydrogel matter and at least 50 parts of water. According to needs, 5-40 parts of freezing point depressants, 0.1-1 part of bactericide and 0.5-5 parts of corrosion inhibitors can be added. When the hydrogel directly acts on the surface of comburent, a compact nonflammable film can be formed on the surface of the comburent. Besides, the surface of the film is still high-viscosity hydrogel at high temperature and does not generate boiled water flowing everywhere. The hydrogel has the high-water-retention-rate, flame-retardant and cooling functions and has the characteristics of being quick in fire extinguishing and small in use amount when used for treating combusted lithium batteries and packaging elements of the batteries.
Description
Technical field
The present invention relates to lithium battery burning process material, be specially one and there is fire-retardant, fire extinguishing and pass the slow-footed a kind of lithium battery of temperature and package burning process hydrogel thereof.
Background technology
Lithium battery is that current performance level is most advanced, the development civilian chemical energy the most rapidly, becomes the supporting power supply of first-selection of the high-end products such as mobile phone, notebook computer, digital equipment.But lithium battery is also dangerous property in use and transportation, and this danger may be fatal, even causes the generation of a disaster.
According to the statistics of US Federal Aviation Administration (FAA), between 1991 ~ 2014 years, 144 relevant to battery " smolder, on fire, very hot or blast " relevant accidents have been had to occur.Domesticly in air transportation process, also there occurs a lot of lithium battery pyrophoricity accident.
Lithium battery burning dangerous main manifestations be: smolder, on fire, very hot or blast, also likely produce a small amount of toxic gas.The research of FAA shows, the temperature that lithium battery thermal runaway produces is more than 590 DEG C, and the temperature that lithium metal battery thermal runaway produces is more than 760 DEG C.The pure cobalt acid lighium polymer battery core of 6000mAh is charged to 4.3V acupuncture simulation internal short-circuit again, and battery produces burning immediately, and the temperature of generation has exceeded 700 DEG C instantaneously.Degree of danger and its capacity of lithium ion battery burning and the voltage swing of charging about: produce the possibility of burning during the lower internal short-circuit of capacity one timing voltage less, but can produce smog or even violent dense smoke, this smog has violent excitant; The possibility of voltage larger internal short-circuit burning is larger, and the also Shaoxing opera that burns is strong, if box hat battery then may produce blast.
The research of FAA shows: the HALON1301 extinguishing chemical that aircraft uses can suppress electrolytical fire, but inhibitory action is not had to the fire of lithium metal, when using halon fire agent, no matter be lithium metal battery or lithium ion battery, the increase of the unburned hydrocarbon discharged along with electrolyte, increases the danger of fire and blast.Test shows, although halon fire agent can suppress lithium ion battery burning fire calamity, but there is the danger of resume combustion repeatedly after fray-out of flame, reason is that the cooling capacity of halon fire agent is limited, once stop using, temperature can rise rapidly again, can not suppress the thermal runaway of lithium ion battery, and ambient substance has by the possibility of again igniting.
For the danger of lithium battery burning, FAA and international boat association (ICAO) propose the emergency trouble shooting measures of lithium battery burning: no matter be lithium metal battery, or chargeable lithium ion battery and lithium battery package, once lithium battery produces burning first passenger should be dispersed into safe place, put out a fire with the substitute of halon fire agent or halon fire agent, water again, to stop flame spread to contiguous battery or material, should lower the temperature to stop its resume combustion to lithium battery with water or non-alcohol liquid immediately after fray-out of flame.
Above-mentioned treatment measures depend on the number of battery and the intensity of fire, if because the limited number of batteries of the water on aircraft is comparatively large, flame is also comparatively large, and also may more difficult control to fire.
Application number is WO2011015411(CN102470261) Deutsche Bundespatent, propose and use the aqueous solution of calcium salt and the burning of gel extinguishant to lithium ion battery to put out a fire simultaneously, the calcium salt used is CaCl2 and Ca(OH) mixture of 2, owing to containing a large amount of Cl-in the aqueous solution, thus larger to corrosion of metal, secondly want both to use during fire extinguishing simultaneously, give when using and bring difficulty.Application number is the Chinese patent of CN200310112793, CN200710020580, CN201010562827 and CN201310067726, for the fine mist fire-fighting agent of the low-viscosity aqueous solution, main component is surfactant, water and a small amount of inorganic salts, organic salt etc., when putting out a fire, the consumption of water is evaporated greatly and easily.
Application number be 01811547 Chinese patent relate to a kind of polyacrylamide water-soluble polymer extinguishing chemical adopting response to temperature, containing polyacrylamide polymers, water, surfactant, extinguishing chemical (ammonium di-hydrogen phosphate, saleratus, potassium acetate etc.), viscosity is 20-2000mPas(20-2000cP).Be the aqueous solution of low-viscosity at a set temperature, be water-fast hydrogel more than design temperature.Application number be 88103151 Chinese patent relate to a kind of inorganic gel aqueous solution extinguishing chemical of water sodium metasilicate, the weak point of this extinguishing chemical is: the water absorption of this inorganic hydrogel material is low, under high temperature, after water volatilization, residual inorganic substances can not play the effect continuing cooling, can raise again after causing temperature to reduce, the few extinguishing ability of the content due to water is limited.
The feature of lithium battery is: at short circuit, high temperature and be squeezed, the external condition such as collision time easily produce the heat that thermal runaway produces and be greater than the heat outwardly shed, when this heat accumulation to a certain extent time just can burn and even explode; Lithium battery produces thermal runaway easily to be caused the thermal runaway of lithium ion battery around thus produces chain reaction; During lithium battery burning, flame is large, temperature is high, even if do not lower rapidly also can produce resume combustion if flame is extinguished temperature; Toxic gas etc. can be produced during burning.
In sum, the lithium battery combustion extinguishment agent involved by existing patent of invention, organic hydrogels and inorganic hydrogel extinguishing chemical be equal Shortcomings part when processing the burning of lithium battery and package.
Summary of the invention
In order to temperature after can not reducing rapidly temperature, cooling when firing-fighting medium exists fire extinguishing when overcoming aboard lithium battery in particularly cargo hold and package burning easily rebound thus produce resume combustion, low-viscosity amount of aqueous solution used is large, spraying chance high temperature is volatile and reduce the problem such as extinguishing effect and cooling effectiveness, propose a kind of easy to use now especially, effectively can extinguish lithium battery burning and cooling rapidly, temperature is not easy a kind of lithium battery of rebounding and package burning process hydrogel thereof after cooling.
For realizing above-mentioned technique effect, technical scheme of the present invention is as follows:
A kind of lithium battery and package burning process hydrogel thereof, is characterized in that: each composition comprising following mass fraction:
The hydrogel materials of 0.5-40 part, the water of at least 50 parts.As required, the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part can also be added.
Described hydrogel materials can be the aqueous solution containing macromolecule hydrogel polymer, described macromolecule hydrogel polymer comprise in polyacrylamide, polyacrylic acid potassium, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate one or more.
Described macromolecule hydrogel solution, at least one macromolecule hydrogel polymer containing 0.5-25 part, the water of more than 60 parts.The content of macromolecule hydrogel polymer is preferably 0.5-15 part, is more preferably 0.5-10 part, even 0.5-5 part.
Described macromolecule hydrogel solution, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
Described macromolecule hydrogel solution, containing, for example lower component: at least one macromolecule hydrogel polymer of 0.5-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 60 parts.
Described lithium battery and package burning process hydrogel thereof, it is characterized in that: described hydrogel materials also can be inorganic hydrogel material, described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, aerosil, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Described inorganic hydrogel solution contains at least one inorganic hydrogel material of 10-40 part, the water of more than 50 parts.The content of inorganic hydrogel material is preferably 10-30 part, is more preferably 10-25 part, even 10-15 part.
Described inorganic hydrogel solution, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
Described inorganic hydrogel solution, containing, for example lower component: at least one inorganic hydrogel material of 10-40 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Described lithium battery and package burning process hydrogel thereof, is characterized in that: described hydrogel materials can also be the hydrogel solution of macromolecule hydrogel polymer and inorganic hydrogel combinations of substances.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, at least one macromolecule hydrogel polymer containing 0.1-15 part, at least one inorganic hydrogel material of 1-25 part and the water of more than 50 parts.Can also be at least one macromolecule hydrogel polymer containing 0.1-10 part, at least one inorganic hydrogel material of 1-15 part and the water of more than 50 parts.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, as required, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, as required, containing, for example lower component: at least one macromolecule hydrogel polymer of 0.1-15 part, at least one inorganic hydrogel material of 1-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Described freezing point depressant: can alcohol be contained, comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more, the content of described alcohol is 5-35 part, is preferably 5-25 part, is more preferably 10-15 part; Described freezing point depressant also can be salt, described salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate, the content of described salt is 5-25 part, be preferably 5-15 part, be more preferably 10-15 part; Described freezing point depressant can also be the composition of alcohol and salt, content 5-25 part of alcohol, content 5-15 part of salt.
Described corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090; Described bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Described hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 2000 ~ 500000CP, be preferably 10000 ~ 500000CP, be more preferably 100000 ~ 500000CP, even 250000 ~ 500000CP, the freezing point of described hydrogel is 0 DEG C ~-45 DEG C.
A preparation method for hydrogel, is characterized in that: operate successively in the following order:
A) hydrogel materials is joined in the deionized water in stirring, Keep agitation 1-2 hour after adding;
B) add freezing point depressant, stir 0.1-0.5 hour;
C) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.1-0.5.
Described hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Described hydrogel can adopt compression sprayer to comprise hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
The invention has the advantages that:
1, be hydrogel of the present invention with one of obvious difference of existing lithium battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, viscosity scope is 2000 ~ 500000CP, be preferably 10000 ~ 500000CP, be more preferably 100000 ~ 500000CP, even 250000 ~ 500000CP, the thinlyfluid viscosity scope of existing invention is 20-2000CP.
2, be can contain calcium salt in hydrogel of the present invention with two of the obvious difference of existing lithium battery burning firing-fighting medium, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.
3, are hydrogels of the present invention with three of the obvious difference of existing patent of invention can be organic hydrogels or inorganic hydrogel, or use organic and inorganic hydrogel material simultaneously.
4, use organic and inorganic hydrogel material advantage to be in the present invention: high molecular polymer is large due to water absorption, is conducive to fire extinguishing and cooling simultaneously; Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.The present invention can just use in the high molecular polymer of high water absorbing capacity and the collocation of appropriate inorganic hydrogel material, overcomes both deficiencies and makes full use of both advantage.
5, the fine and close and incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this tunic meeting air-isolation and comburant, thus play fire retardation, the hydrogel specifically covering burning or high temp objects surface can not film forming completely, just the bottom of gel and the surface of high temperature or comburant form a skim, the upper part of gel still keeps a kind of hydrogel state, thus plays a kind of good continued down effect.
Although 6, hydrogel advantage of the present invention is that this hydrogel covers the internal temperature of lithium battery behind the lithium battery surface of burning at 600-800 DEG C, the surface temperature of lithium battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium ion battery that prevent around unburned lithium battery and package is effective especially.
The toxic gases such as 9, hydrogel advantage of the present invention can contain calcium salt in gel, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium battery burning.
9, hydrogel advantage of the present invention is according to actual needs, can add freezing point depressant, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Detailed description of the invention
The mixing of each component herein does not all have the restriction of ratio, any ratio all can realize the technique effect of hydrogel, and the composition respectively not having limiting concentration added, illustrate and concentration is not limited, the variable concentrations of this area routine can actualizing technology effect, just effect difference to some extent.
Embodiment 1
A kind of lithium battery and package burning process hydrogel thereof, comprise composition and the deionized water of following mass fraction:
At least one macromolecule hydrogel polymer of 0.5-25 part, the water of more than 75 parts.
Embodiment 2
First scheme of the present invention is: at least one inorganic hydrogel material containing 10-40 part, the water of more than 60 parts.
Embodiment 3
At least one macromolecule hydrogel polymer containing 0.1-15 part, at least one inorganic hydrogel material of 1-25 part and the water of more than 50 parts.
Embodiment 4:
At least one macromolecule hydrogel polymer of 0.5-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 60 parts
Embodiment 5:
At least one inorganic hydrogel material of 10-40 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Embodiment 6:
At least one macromolecule hydrogel polymer of 0.1-15 part, at least one inorganic hydrogel material of 1-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Embodiment 7:
A preparation method for hydrogel, is characterized in that: operate successively in the following order: a) hydrogel materials joined in the deionized water in stirring, Keep agitation 1-2 hour after adding; B) add freezing point depressant, stir 0.5-1 hour; C) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.1-0.5.
Implementation column 8:
Operate in the following order:
A) macromolecule hydrogel polymer sodium alginate is slowly joined in the deionized water in stirring, Keep agitation 1 hour after adding; B) add salt, stir 0.3 hour; E) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.5.
Surface of aluminum plate is heated to 300 DEG C, then by the surface of aluminum plate of gel overlay in heating, temperature is reduced to rapidly about 100 DEG C, and gel becomes black mixture.
Embodiment 9:
operate in the following order:
A) macromolecule hydrogel polymer CMC is slowly joined in the deionized water in stirring, Keep agitation 0.5 hour after adding; B) add inorganic hydrogel material, stir 0.5 hour; C) add salt, stir 0.3 hour; E) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.5.
Viscosity 150000cP, freezing point about-10 DEG C, is heated to 450 DEG C by surface of aluminum plate, then by the surface of aluminum plate of gel overlay in heating, temperature is reduced to about 260 DEG C, and gel becomes black mixture.
Embodiment 10:
Operate in the following order:
A) xanthans is slowly joined in the deionized water in stirring, Keep agitation 1.5 hours after adding; B) add inorganic hydrogel material, stir 0.5 hour; C) add ethylene glycol, stir 0.3 hour; E) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.5.
Surface of aluminum plate is heated to 310 DEG C, then by the surface of aluminum plate of gel overlay in heating, temperature is reduced to rapidly about 85 DEG C, and film forming bottom gel, face remains gel.
Embodiment 11:
Operate in the following order:
A) acrylic copolymer is slowly joined in the deionized water in stirring, Keep agitation 1.5 hours after adding; B) add inorganic hydrogel material, stir 0.5 hour; C) add salt, stir 0.3 hour; E) add D-sorbite, ethylene glycol, corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.5.
The pure cobalt of 6000mAh acid lighium polymer list battery core is crossed and is charged to 4.3V, then by the above-mentioned gel coating of about 7g on the surface of battery core, carry out internal short-circuit test with acupuncture; Again the above-mentioned battery core not applying gel is carried out acupuncture short circuit; Tied together by two above-mentioned battery core thin wires, the gel of surface coating 10g, then carries out the test of acupuncture internal short-circuit simultaneously again.
Conclusion (of pressure testing):
1) the pure cobalt acid lithium list battery core not applying gel is burnt rapidly;
2) be coated with the fast nothing burning of pure cobalt acid lithium cell of gel, film forming bottom gel, remains gel above, and the phenomenon of anhydrous boiling occurs.
3) two battery core is without burning, battery core internal temperature 720 DEG C, gel surface temperature 87 DEG C.
Embodiment 12
Operate in the following order:
A) aluminium-magnesium silicate is joined in the deionized water in stirring, Keep agitation 1.5 hours after adding; B) add sorbierite, corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.5.
The pure cobalt of 6000mAh acid lighium polymer list battery core is crossed and is charged to 4.35V, then by the above-mentioned gel coating of about 4g on the surface of battery core, carry out internal short-circuit test with acupuncture; Again the above-mentioned battery core not applying gel is carried out acupuncture short circuit; By the above-mentioned gel coating of about 10g on the surface of battery core, carry out internal short-circuit test with acupuncture;
Conclusion (of pressure testing):
1) the pure cobalt acid lithium list battery core not applying gel is burnt rapidly;
2) battery core applying 4g gel is burnt not having the battery core marginal portion of gel;
3) battery core applying 10g gel burn not having the battery core marginal portion of gel, and flame is less, and extinguishing is fallen very soon.Battery core internal temperature 825 DEG C, battery core surface temperature (the battery core surface that gel contacts with battery core) temperature 220 DEG C, gel surface temperature 98 DEG C.
Embodiment 13
A kind of lithium battery and package burning process hydrogel thereof comprise each composition of following mass fraction:
At least one macromolecule hydrogel polymer of 0.1-10 part;
At least one inorganic hydrogel material of 1-25 part;
At least one alcohol of 5-35 part;
At least one salt of 5-15 part;
The bactericide of 0.1-1 part;
The corrosion inhibiter of 0.5-5 part;
The deionized water of 50-85 part.
Macromolecule hydrogel polymer comprises polyacrylamide, polyacrylic acid potassium, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate
Inorganic hydrogel material comprise in bentonite, diatomite, waterglass, silica, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more.
Salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate.
Corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090.
Bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Described hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 250000 ~ 500000CP, the freezing point of described hydrogel is 0 DEG C ~-35 DEG C.
Described hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Described compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
Be hydrogel of the present invention with one of obvious difference of existing lithium ion battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, special viscosity scope is 200000 ~ 500000CP, and the thinlyfluid viscosity scope of existing invention is 20-2000CP.
With two of the obvious difference of existing lithium ion battery burning firing-fighting medium be hydrogel of the present invention containing calcium salt, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.
That hydrogel of the present invention employs organic and inorganic hydrogel material simultaneously with three of the obvious difference of existing patent of invention.
Simultaneously hydrogel advantage of the present invention employs high molecular polymer and inorganic hydrogel material.High molecular polymer is large due to water absorption, is conducive to fire extinguishing and cooling; Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.The high molecular polymer of high water absorbing capacity and the collocation of appropriate inorganic hydrogel material use by the present invention, make full use of both advantages.
Fine and close and the incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this film forming meeting air-isolation and comburant, thus play fire retardation, the hydrogel specifically covering burning or high temp objects surface can not film forming completely, just the bottom of gel and the surface of high temperature or comburant form a skim, the upper part of gel still keeps a kind of hydrogel state, thus plays a kind of good continued down effect.
Hydrogel advantage of the present invention is that after this hydrogel covers the surface of burning or high temp objects, the moisture in gel can not seethe with excitement, and demonstrates and also has good moistening effect at high operating temperatures.
The internal temperature of lithium ion battery after the lithium ion battery surface of burning is covered at 600-800 DEG C although hydrogel advantage of the present invention is this hydrogel, the surface temperature of lithium ion battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium ion battery that prevent around unburned lithium ion battery and package is effective especially.
The toxic gases such as hydrogel advantage of the present invention is containing calcium salt, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium ion battery burning.
Hydrogel advantage of the present invention is containing suitable alcohol and salt, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Embodiment 14
A kind of lithium battery and package burning process composite aquogel thereof comprise each composition of following mass fraction: at least one macromolecule hydrogel polymer comprising 0.1-5 part, the at least one inorganic hydrogel material of 1-15 part, the at least one alcohol of 10-25 part, the at least one salt of 1-8 part, the bactericide of 0.1-0.7 part and the corrosion inhibiter of 0.5-3.5 part, the deionized water of 55-80 part.
Macromolecule hydrogel polymer is one or more in polyacrylamide, xanthans, polyacrylic acid, acrylic copolymer.
Inorganic hydrogel material comprise in bentonite, diatomite, waterglass, silica, chromatographic silica gel, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more.
Salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate.
Corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090.
Bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 150000 ~ 500000CP, the freezing point of described hydrogel is 0 DEG C ~-25 DEG C.
Hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
Be hydrogel of the present invention with one of obvious difference of existing lithium battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, special viscosity scope is 100000 ~ 500000CP, and the thinlyfluid viscosity scope of existing invention is 20-2000CP.Be that hydrogel of the present invention can contain calcium salt with two of the obvious difference of existing lithium battery burning firing-fighting medium, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.That hydrogel of the present invention employs organic and inorganic hydrogel material simultaneously with three of the obvious difference of existing patent of invention.
Simultaneously hydrogel advantage of the present invention employs high molecular polymer and inorganic hydrogel material.High molecular polymer is large due to water absorption, is conducive to fire extinguishing and cooling; Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.The high molecular polymer of high water absorbing capacity and the collocation of appropriate inorganic hydrogel material use by the present invention, make full use of both advantages.
Fine and close and the incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this film forming meeting air-isolation and comburant, thus play fire retardation, the hydrogel specifically covering burning or high temp objects surface can not film forming completely, just the bottom of gel and the surface of high temperature or comburant form a skim, the upper part of gel still keeps a kind of hydrogel state, thus plays a kind of good continued down effect.
Hydrogel advantage of the present invention is that after this hydrogel covers the surface of burning or high temp objects, the moisture in gel can not seethe with excitement, and demonstrates and also has good moistening effect at high operating temperatures.
The internal temperature of lithium ion battery after the lithium ion battery surface of burning is covered at 600-800 DEG C although hydrogel advantage of the present invention is this hydrogel, the surface temperature of lithium ion battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium ion battery that prevent around unburned lithium ion battery and package is effective especially.
The toxic gases such as hydrogel advantage of the present invention to contain calcium salt, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium ion battery burning.
Hydrogel advantage of the present invention is containing suitable alcohol and salt, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Embodiment 15
A kind of lithium battery and package burning process hydrogel thereof comprise each composition of following mass fraction: at least one inorganic hydrogel material comprising 10-25 part, the at least one alcohol of 5-15 part, the at least one calcium salt of 1-5 part, other alkali metal salt of at least one of 5-15 part, the bactericide of 0.1-0.3 part and the corrosion inhibiter of 0.5-2 part, the deionized water of 60-70 part.
Macromolecule hydrogel polymer is one or more in polyacrylamide, sodium alginate, xanthans, acrylic copolymer.
Described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, silica, chromatographic silica gel, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more.
Calcium salt comprises calcium carbonate, calcium citrate, calcium acetate.
Alkali metal salt comprise in potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate one or more.
Corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090.
Bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 100000 ~ 500000CP, the freezing point of described composite aquogel is 0 DEG C ~-25 DEG C.
Hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
The invention has the advantages that:
Be hydrogel of the present invention with one of obvious difference of existing lithium ion battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, special viscosity scope is 100000 ~ 500000CP, and the thinlyfluid viscosity scope of existing invention is 20-2000CP.With two of the obvious difference of existing lithium battery burning firing-fighting medium be hydrogel of the present invention containing calcium salt, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.
Hydrogel advantage of the present invention is inorganic hydrogel material.Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.
Fine and close and the incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this film forming can air-isolation and comburant, thus plays fire retardation.
Hydrogel advantage of the present invention is that after this hydrogel covers the surface of burning or high temp objects, the moisture in gel can not seethe with excitement, and demonstrates and also has good moistening effect at high operating temperatures.
The internal temperature of lithium battery after the lithium ion battery surface of burning is covered at 600-800 DEG C although hydrogel advantage of the present invention is this hydrogel, the surface temperature of lithium ion battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium ion battery that prevent around unburned lithium ion battery and package is effective especially.
The toxic gases such as hydrogel advantage of the present invention is containing calcium salt, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium ion battery burning.
Hydrogel advantage of the present invention is containing suitable alcohol and salt, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Embodiment 16
A preparation method for hydrogel, is characterized in that: operate successively in the following order:
A) aquogel polymer is joined in the deionized water in stirring, Keep agitation 1-2 hour after adding;
B) add freezing point depressant, stir 0.5-1 hour;
E) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.1-0.5.
Described hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Described compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
Embodiment 15
A kind of lithium ion battery and package burning process composite aquogel thereof, is characterized in that: each composition comprising following mass fraction:
At least one macromolecule hydrogel polymer of 0.1-10 part;
At least one inorganic hydrogel material of 1-25 part;
At least one alcohol of 0-35 part;
At least one salt of 0.5-25 part;
The bactericide of 0.1-1 part;
The corrosion inhibiter of 0.5-5 part;
The deionized water of 50-85 part.
Or contain at least one macromolecule hydrogel polymer of 0.1-5 part, the at least one inorganic hydrogel material of 1-15 part, the at least one alcohol of 15-35 part, the at least one calcium salt of 1-8 part, the at least one salt of 5-15 part, the bactericide of 0.1-0.7 part and the corrosion inhibiter of 0.5-3.5 part, the deionized water of 55-80 part.Or contain at least one macromolecule hydrogel polymer of 0.1-2.5 part, the at least one inorganic hydrogel material of 1-10 part, the at least one alcohol of 25-35 part, the at least one calcium salt of 1-5 part, the at least one salt of 10-20 part, the bactericide of 0.1-0.3 part and the corrosion inhibiter of 0.5-2 part, the deionized water of 60-70 part.
Described macromolecule hydrogel polymer comprise in poly-N-isopropyl acrylamide, polymethylacrylic acid, N, N-dimethylamino ethyl ester, polyacrylamide, polyacrylic acid potassium, polyacrylic acid, polyvinyl pyrrolidone, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate one or more.Or to state macromolecule hydrogel polymer be one or more in polyacrylamide, polyacrylic acid potassium, polyacrylic acid, acrylic copolymer.
Described macromolecule hydrogel polymer is greater than 1:10 with the water suction ratio of water, the full-bodied gel of the water-soluble rear one-tenth of polymer.Or state macromolecule hydrogel polymer and be greater than 1:50 with the water suction ratio of water, the full-bodied gel of the water-soluble rear one-tenth of polymer.Or state macromolecule hydrogel polymer and be greater than 1:100 with the water suction ratio of water, the full-bodied gel of the water-soluble rear one-tenth of polymer.
Described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, aerosil, chromatographic silica gel, aluminium-magnesium silicate, lithium magnesium silicate, vermiculite etc. one or more.
Described alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more.
Described salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate.
Described corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090.
Described bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Described composite aquogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 250000 ~ 500000CP, the freezing point of described composite aquogel is 0 DEG C ~-35 DEG C.
A preparation method for hydrogel, is characterized in that: operate successively in the following order:
A) macromolecule hydrogel polymer is joined in the deionized water in stirring, Keep agitation 1-2 hour after adding;
B) add inorganic hydrogel material, stir 0.5-1 hour;
C) add alcohol, stir 0.1-0.5 hour;
D) add salt, stir 0.1-0.5 hour;
E) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.1-0.5.
Described composite aquogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Described compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
Be hydrogel of the present invention with one of obvious difference of existing lithium ion battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, special viscosity scope is 100000 ~ 500000CP, and the thinlyfluid viscosity scope of existing invention is 20-2000CP.With two of the obvious difference of existing lithium ion battery burning firing-fighting medium be hydrogel of the present invention containing calcium salt, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.That hydrogel of the present invention employs organic and inorganic hydrogel material simultaneously with three of the obvious difference of existing patent of invention.
Simultaneously hydrogel advantage of the present invention employs high molecular polymer and inorganic hydrogel material.Macromolecule hydrogel is easy to burning after water is evaporated completely, simultaneously macromolecule hydrogel at high temperature water can produce boiling, flowing towards periphery reduces fire extinguishing and cooling effectiveness.Inorganic hydrogel due to water absorption limited, fire extinguishing and cooling capacity are also not enough to some extent, have residual powder existence after moisture evaporation is complete.But high molecular polymer is large due to water absorption, be conducive to fire extinguishing and cooling; Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.The high molecular polymer of high water absorbing capacity and the collocation of appropriate inorganic hydrogel material use by the present invention, overcome both deficiencies and make full use of both advantage.
Fine and close and the incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this film forming meeting air-isolation and comburant, thus play fire retardation, the hydrogel specifically covering burning or high temp objects surface can not film forming completely, just the bottom of gel and the surface of high temperature or comburant form a skim, the upper part of gel still keeps a kind of hydrogel state, thus plays a kind of good continued down effect.
Hydrogel advantage of the present invention is that after this hydrogel covers the surface of burning or high temp objects, the moisture in gel can not seethe with excitement, and demonstrates and also has good moistening effect at high operating temperatures.
The internal temperature of lithium ion battery after the lithium ion battery surface of burning is covered at 600-800 DEG C although hydrogel advantage of the present invention is this hydrogel, the surface temperature of lithium ion battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium ion battery that prevent around unburned lithium ion battery and package is effective especially.
The toxic gases such as hydrogel advantage of the present invention is containing calcium salt, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium ion battery burning.
Hydrogel advantage of the present invention is containing suitable alcohol and salt, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Embodiment 16
A kind of lithium battery and package burning process composite aquogel thereof comprise each composition of following mass fraction: at least one macromolecule hydrogel polymer comprising 2 parts, the at least one inorganic hydrogel material of 8 parts, the at least one alcohol of 15 parts, the at least one calcium salt of 3 parts, other alkali metal salt of at least one of 10 parts, the corrosion inhibiter of the bactericide of 0.2 part and 1 part, the deionized water of 61 parts.
Macromolecule hydrogel polymer is polyacrylamide, xanthans, alginic acid south, one or more in acrylic copolymer.
Described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, silica, chromatographic silica gel, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more.
Calcium salt comprises calcium carbonate, calcium citrate, calcium acetate.
Other alkali metal salt comprise in potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate one or more.
Corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090.
Bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 150000 ~ 500000CP, the freezing point of described composite aquogel is 0 DEG C ~-35 DEG C.
Composite aquogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Compression sprayer comprises hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
The invention has the advantages that:
Be hydrogel of the present invention with one of obvious difference of existing lithium battery burning firing-fighting medium be the thick liquid that a kind of high viscosity is easy to sprawl, special viscosity scope is 100000 ~ 500000CP, and the thinlyfluid viscosity scope of existing invention is 20-2000CP.With two of the obvious difference of existing lithium ion battery burning firing-fighting medium be hydrogel of the present invention containing calcium salt, directly overlay comburant surface in use, do not need calcium saline solution and hydrogel separate and use simultaneously.That hydrogel of the present invention employs organic and inorganic hydrogel material simultaneously with three of the obvious difference of existing patent of invention.
Simultaneously hydrogel advantage of the present invention employs high molecular polymer and inorganic hydrogel material.High molecular polymer is large due to water absorption, is conducive to fire extinguishing and cooling; Inorganic hydrogel has the advantages such as do not fire, moisture under high temperature in gel does not seethe with excitement.The high molecular polymer of high water absorbing capacity and the collocation of appropriate inorganic hydrogel material are used the advantage making full use of both by the present invention.
Fine and close and the incombustible film of hydrogel advantage of the present invention to be hydrogel on the surface of high temperature and comburant can be formed one deck, this film forming meeting air-isolation and comburant, thus play fire retardation, the hydrogel specifically covering burning or high temp objects surface can not film forming completely, just the bottom of gel and the surface of high temperature or comburant form a skim, the upper part of gel still keeps a kind of hydrogel state, thus plays a kind of good continued down effect.
Hydrogel advantage of the present invention is that after this hydrogel covers the surface of burning or high temp objects, the moisture in gel can not seethe with excitement, and demonstrates and also has good moistening effect at high operating temperatures.
The internal temperature of lithium ion battery after the lithium ion battery surface of burning is covered at 600-800 DEG C although hydrogel advantage of the present invention is this hydrogel, the surface temperature of lithium ion battery is at 300-400 DEG C, but the temperature of gel surface is lower than 100 DEG C, this thermal runaway for the burning or lithium battery that prevent around unburned lithium battery and package is effective especially.
The toxic gases such as hydrogel advantage of the present invention is containing calcium salt, at high temperature has good moistening effect simultaneously, the HF produced when can eliminate lithium ion battery burning.
Hydrogel advantage of the present invention is containing suitable alcohol and salt, makes this hydrogel have lower freezing point, and this hydrogel also can effectively be used at low temperatures.
Embodiment 17
A kind of lithium battery and package burning process hydrogel thereof, is characterized in that: each composition comprising following mass fraction:
The hydrogel materials of 0.5-40 part, the water of at least 50 parts.As required, the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part can also be added.
Described hydrogel materials can be the aqueous solution containing macromolecule hydrogel polymer, described macromolecule hydrogel polymer comprise in polyacrylamide, polyacrylic acid potassium, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate one or more.
Described macromolecule hydrogel solution, at least one macromolecule hydrogel polymer containing 0.5-25 part, the water of more than 60 parts.The content of macromolecule hydrogel polymer is preferably 0.5-15 part, is more preferably 0.5-10 part, even 0.5-5 part.
Described macromolecule hydrogel solution, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
Described macromolecule hydrogel solution, containing, for example lower component: at least one macromolecule hydrogel polymer of 0.5-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 60 parts.
Described lithium battery and package burning process hydrogel thereof, it is characterized in that: described hydrogel materials also can be inorganic hydrogel material, described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, aerosil, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
Described inorganic hydrogel solution contains at least one inorganic hydrogel material of 10-40 part, the water of more than 50 parts.The content of inorganic hydrogel material is preferably 10-30 part, is more preferably 10-25 part, even 10-15 part.
Described inorganic hydrogel solution, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
Described inorganic hydrogel solution, containing, for example lower component: at least one inorganic hydrogel material of 10-40 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Described lithium battery and package burning process hydrogel thereof, is characterized in that: described hydrogel materials can also be the hydrogel solution of macromolecule hydrogel polymer and inorganic hydrogel combinations of substances.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, at least one macromolecule hydrogel polymer containing 0.1-15 part, at least one inorganic hydrogel material of 1-25 part and the water of more than 50 parts.Can also be at least one macromolecule hydrogel polymer containing 0.1-10 part, at least one inorganic hydrogel material of 1-15 part and the water of more than 50 parts.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, as required, can also contain the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
The hydrogel solution of described macromolecule hydrogel polymer and inorganic hydrogel combinations of substances, as required, containing, for example lower component: at least one macromolecule hydrogel polymer of 0.1-15 part, at least one inorganic hydrogel material of 1-25 part, the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part, the water of more than 50 parts.
Described freezing point depressant: can alcohol be contained, comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more, the content of described alcohol is 5-35 part, is preferably 5-25 part, is more preferably 10-15 part; Described freezing point depressant also can be salt, described salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate, the content of described salt is 5-25 part, be preferably 5-15 part, be more preferably 10-15 part; Described freezing point depressant can also be the composition of alcohol and salt, content 5-25 part of alcohol, content 5-15 part of salt.
Described corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090; Described bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
Described hydrogel adopt 15 DEG C time BrookfieldviscometerLV4 survey viscosity scope be 2000 ~ 500000CP, be preferably 10000 ~ 500000CP, be more preferably 100000 ~ 500000CP, even 250000 ~ 500000CP, the freezing point of described hydrogel is 0 DEG C ~-45 DEG C.
A preparation method for hydrogel, is characterized in that: operate successively in the following order:
A) hydrogel materials is joined in the deionized water in stirring, Keep agitation 1-2 hour after adding;
B) add freezing point depressant, stir 0.1-0.5 hour;
C) add corrosion inhibiter and bactericide, it is little of evenly to add rear each stirring 0.1-0.5.
Described hydrogel adopts the burning of the form of compression sprayer or multilayer complex films to lithium battery and lithium battery package to carry out prevention process.
Described hydrogel can adopt compression sprayer to comprise hand pressure sprayer, air compressor machine sprayer and electric press sprayer, and hydrogel is sprayed directly on to comburant surface to carry out putting out a fire, lowering the temperature and isolate comburant.
Claims (10)
1. lithium battery and a package burning process hydrogel thereof, is characterized in that: each composition comprising following mass fraction:
The hydrogel materials of 0.5-40 part and the water of at least 50 parts.
2. lithium battery according to claim 1 and package burning process hydrogel thereof, is characterized in that: also comprise the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and the corrosion inhibiter of 0.5-5 part.
3. lithium battery according to claim 1 and 2 and package burning process hydrogel thereof, it is characterized in that: described hydrogel materials is macromolecule hydrogel polymer, described macromolecule hydrogel polymer comprise in polyacrylamide, polyacrylic acid potassium, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate one or more.
4. lithium battery according to claim 3 and package burning process hydrogel thereof, it is characterized in that: at least one macromolecule hydrogel polymer containing 0.5-25 part, the water of more than 60 parts, the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
5. lithium battery according to claim 1 and 2 and package burning process hydrogel thereof, it is characterized in that: described hydrogel materials is inorganic hydrogel material, described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, aerosil, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
6. lithium battery according to claim 5 and package burning process hydrogel thereof, it is characterized in that: at least one inorganic hydrogel material containing 10-40 part, the water of more than 50 parts, the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part.
7. lithium battery according to claim 1 and 2 and package burning process hydrogel thereof, is characterized in that: described hydrogel materials is macromolecule hydrogel polymer and inorganic hydrogel material.
8. lithium battery according to claim 7 and package burning process hydrogel thereof, it is characterized in that: at least one macromolecule hydrogel polymer containing 0.1-15 part, at least one inorganic hydrogel material of 1-25 part and the water of more than 50 parts, the corrosion inhibiter of the freezing point depressant of 5-40 part, the bactericide of 0.1-1 part and 0.5-5 part;
Described macromolecule hydrogel polymer comprise in polyacrylamide, polyacrylic acid potassium, polyvinyl alcohol, CMC, hydroxyethylcellulose, hydroxypropyl cellulose, acrylic copolymer, hydroxypropyl methylcellulose, carboxymethyl hydroxyethyl cellulose, xanthans, guar gum and sodium alginate one or more;
Described inorganic hydrogel material comprise in bentonite, diatomite, waterglass, aerosil, aluminium-magnesium silicate, lithium magnesium silicate etc. one or more.
9. lithium battery according to claim 2 and package burning process hydrogel thereof, is characterized in that: described freezing point depressant is the composition of alcohol, salt or alcohol and salt;
Described alcohol comprise in glucitol, xylitol, D-sorbite, sweet mellow wine, ethylene glycol, propane diols, glycerine and bio-based ethylene glycol, propane diols one or more, the content of described alcohol is 5-35 part;
Described salt is one or more in calcium carbonate, calcium citrate, calcium acetate, potassium acetate, potassium lactate, sodium lactate, sodium acetate, potash, saleratus, sodium carbonate, sodium acid carbonate, and the content of described salt is 5-25 part;
In the composition of described alcohol and salt, content 5-25 part of alcohol, content 5-15 part of salt.
10. lithium battery according to claim 2 and package burning process hydrogel thereof, is characterized in that: described corrosion inhibiter is one or more in alkali metal phosphate, alkylphosphonic, alkali silicate, alkali metal acylate, methylimidazole, benzimidazole, 124 Triazole, methyl benzotriazole, decoyl both sexes base two sodium malonate, MAXHIBOA-3090;
Described bactericide is at least one in dodecyl benzyl dimethyl ammonium chloride, myristyl benzyl dimethyl ammonium chloride, polyquaternium, OIT, BIT, glutaraldehyde.
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