CN116870416A - Ultrathin aerosol fire extinguishing agent and production process thereof - Google Patents
Ultrathin aerosol fire extinguishing agent and production process thereof Download PDFInfo
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- CN116870416A CN116870416A CN202310607723.7A CN202310607723A CN116870416A CN 116870416 A CN116870416 A CN 116870416A CN 202310607723 A CN202310607723 A CN 202310607723A CN 116870416 A CN116870416 A CN 116870416A
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- Prior art keywords
- fire extinguishing
- agent
- ultrathin
- aerosol fire
- extinguishing agent
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- 239000000443 aerosol Substances 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 66
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 239000007800 oxidant agent Substances 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 229910052900 illite Inorganic materials 0.000 claims abstract description 11
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims abstract description 11
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 4
- 229910052656 albite Inorganic materials 0.000 claims abstract description 4
- 229910001919 chlorite Inorganic materials 0.000 claims abstract description 4
- 229910052619 chlorite group Inorganic materials 0.000 claims abstract description 4
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010457 zeolite Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 23
- 239000002270 dispersing agent Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 16
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 12
- 239000005011 phenolic resin Substances 0.000 claims description 12
- 229920001568 phenolic resin Polymers 0.000 claims description 12
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 8
- 235000010333 potassium nitrate Nutrition 0.000 claims description 8
- 239000004323 potassium nitrate Substances 0.000 claims description 8
- 229920000877 Melamine resin Polymers 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 4
- NDEMNVPZDAFUKN-UHFFFAOYSA-N guanidine;nitric acid Chemical compound NC(N)=N.O[N+]([O-])=O.O[N+]([O-])=O NDEMNVPZDAFUKN-UHFFFAOYSA-N 0.000 claims description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004156 Azodicarbonamide Substances 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims description 2
- 239000004375 Dextrin Substances 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229920001800 Shellac Polymers 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 150000001241 acetals Chemical class 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 2
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 235000019425 dextrin Nutrition 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 235000001727 glucose Nutrition 0.000 claims description 2
- 229920000591 gum Polymers 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000004208 shellac Substances 0.000 claims description 2
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 2
- 229940113147 shellac Drugs 0.000 claims description 2
- 235000013874 shellac Nutrition 0.000 claims description 2
- 235000010344 sodium nitrate Nutrition 0.000 claims description 2
- 239000004317 sodium nitrate Substances 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- 235000010356 sorbitol Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 3
- 238000007907 direct compression Methods 0.000 abstract 1
- 238000013467 fragmentation Methods 0.000 abstract 1
- 238000006062 fragmentation reaction Methods 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000003607 modifier Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000007873 sieving Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000009818 secondary granulation Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- A62D1/06—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires containing gas-producing, chemically-reactive components
Abstract
The invention provides an ultrathin aerosol fire extinguishing agent and a production process thereof, wherein the thickness of the ultrathin aerosol fire extinguishing agent is 5mm plus or minus 0.5mm, and the ultrathin aerosol fire extinguishing agent comprises the following raw materials in percentage by weight: 55-75% of oxidant, 10-25% of reducing agent, 10-15% of binder and 5-8% of regulator. Wherein the regulator is one or more of illite, chlorite, zeolite and albite. The aerosol fire extinguishing agent is prepared by adding a certain amount of regulator into the raw material of the aerosol fire extinguishing agent to solve the problems of poor strength, easy fragmentation and difficult demoulding of the existing flaky agent after direct compression, greatly improves the strength and toughness of the compressed agent by adding a small amount of regulator, prevents the ultrathin tablet agent from being fragmented during transportation, production, storage and use, and has no negative influence on various spraying performances of the agent. The production process provided by the invention simplifies the flow, improves the productivity and efficiency, and saves the cost.
Description
Technical Field
The invention belongs to the technical field of fire extinguishment, and particularly relates to an ultrathin aerosol fire extinguishing agent and a production process thereof.
Background
The aerosol fire extinguishing agent consists of an oxidant, a reducing agent, an adhesive and other additives, wherein generated aerosol and a fire extinguishing particle generating agent are combined, and the generated aerosol generates heat and power of fire extinguishing gas through the aerosol agent, so that the fire extinguishing particle generating agent is cracked, thereby releasing effective fire extinguishing particles, and the aerosol fire extinguishing agent is superior to a conventional fire extinguisher in portability, safety and fire extinguishing performance, and the superior performance becomes the most widely applied and focused fire extinguishing agent at present.
The existing aerosol fire extinguishing agent is generally produced by premixing raw materials, then forcedly granulating, drying granular medicines, then pressing the granular medicines, and assembling the pressed bare medicine finished products into various devices. The aerosol fire extinguishing agent needs to be dried for many times in the production process, the bare agent formed by subsequent pressing needs to be assembled manually, the danger coefficient of the dry material during pressing is relatively high, various safety measures are needed, and the production cost is high.
Disclosure of Invention
The invention provides an ultrathin aerosol fire extinguishing agent and a production process thereof, which can shorten the production process flow, and the obtained ultrathin aerosol fire extinguishing agent has good strength and is easy to demould.
The technical scheme of the invention is that the ultra-thin aerosol fire extinguishing agent has the thickness of 5+/-0.5 mm and comprises the following raw materials in percentage by weight: 55-75% of oxidant, 10-25% of reducing agent, 10-15% of adhesive and 5-8% of regulator.
Further, the oxidant is one or more of potassium nitrate, sodium nitrate, strontium nitrate, guanidine nitrate, magnesium nitrate and barium nitrate
Further, the reducing agent is one or more of magnesium, carbon, aluminum, iron, nitroguanidine, melamine, dicyandiamide, azodicarbonamide and urea.
Further, the adhesive is one or more of water glass, hydroxypropyl methylcellulose, phenolic resin, epoxy resin, shellac, starch, sorbitol, glucose, acetal gum, dextrin and rubber.
Further, the regulator is one or more of illite, chlorite, zeolite and albite.
The invention also relates to a production process of the ultrathin aerosol fire extinguishing agent, which comprises the following steps of:
s1, weighing raw materials, crushing and screening, and screening and mixing a powdery sample;
s2, adding a dispersing agent into the mixed material in the step S1 to carry out mixing and dispersing treatment to obtain a wet material;
s3, directly transferring the wet material into an ultrathin sheet shell mould, pressing, forming, demoulding and drying to obtain the ultrathin sheet aerosol fire extinguishing agent.
Further, in the screening in S1, the screen mesh is 40-100 meshes.
Further, the dispersing agent in S2 is methanol or ethanol; the addition amount is 5-12% of the mass of the powdery material.
Further, the drying temperature in S3 is 40-60 ℃, the relative humidity of the environment during drying is below 70%, and the volatile content in the material is less than or equal to 1%.
The invention also relates to application of the ultrathin aerosol fire extinguishing agent in space or slit fire extinguishing.
The invention has the following beneficial effects:
compared with the traditional aerosol fire extinguishing agent production process, the production process is simple and feasible, the production process is effectively reduced on the basis of the original production process, and granulation, drying and secondary granulation processes are not needed, so that the mixed wet material can be directly pressed into an ultrathin sheet die, the production cost is reduced, the prepared ultrathin sheet aerosol fire extinguishing agent can be suitable for various scenes, and the ultrathin sheet aerosol fire extinguishing agent is particularly suitable for scenes with small installation space and more slits.
According to the aerosol fire extinguishing agent disclosed by the invention, a certain amount of regulator is added into the raw material of the aerosol fire extinguishing agent, wherein metal ions are embedded between lamellar structures, the interlayer spacing is smaller, the interlayer acting force is larger, after a dispersing agent is added, the aerosol fire extinguishing agent can be cooperated with an adhesive due to the large specific surface area and strong adsorption force, small molecules can enter the lamellar layers of the regulator more easily, and the hardness, toughness and stability of the formed intercalation structure are obviously improved. The problems that the existing sheet-shaped medicament is poor in strength, easy to crack and difficult to demould after being directly pressed are solved, the strength and toughness of the pressed medicament are greatly improved by adding a small amount of regulator, the phenomenon that the ultrathin sheet-shaped medicament is cracked in the transportation, production, storage and use processes is prevented, and negative influences on various spraying performances of the medicament are avoided. The production process provided by the invention simplifies the flow, improves the productivity and efficiency, and saves the cost.
Drawings
Fig. 1 is a flow chart of a production process of a conventional aerosol fire extinguishing agent.
Fig. 2 is a flow chart of a production process of the ultrathin aerosol fire extinguishing agent provided by the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
Example 1
Preparing 500g of a small sample aerosol fire extinguishing agent, and weighing powdery raw materials specifically as follows: 60% of oxidant (potassium nitrate), 20% of reducing agent (dicyandiamide), 18% of adhesive (phenolic resin) and 2% of regulator (illite) are screened and mixed for 3 times by a 120-mesh screen, ethanol with the mass of 6% of the total material is added as a dispersing agent, and the mixture is manually wet mixed until no obvious particles exist in the wet material, and then the wet material is directly transferred into a fixed 50g ultrathin sheet shell mould for compression molding. Drying the pressed tablet medicament in an environment with the temperature of 50 ℃ and the relative humidity of below 70% until the volatile content is less than or equal to 1%, taking the pressed ultrathin tablet medicament for spray test, controlling the thickness to be 5mm plus or minus 0.5mm, and performing drop test at a position with the height of 2 m.
Example 2
500g of a small sample aerosol fire extinguishing agent was prepared, 60% of an oxidizing agent (potassium nitrate), 20% of a reducing agent (dicyandiamide), 15% of a binder (phenolic resin) and 5% of a modifier (illite) were weighed out as the powdery raw materials, and the rest was the same as in example 1.
Example 3
500g of a small sample aerosol fire extinguishing agent was prepared, 60% of an oxidizing agent (potassium nitrate), 20% of a reducing agent (dicyandiamide), 13% of a binder (phenolic resin) and 7% of a modifier (illite) were weighed out as the powdery raw materials, and the rest was the same as in example 1.
Example 4
500g of a small sample aerosol fire extinguishing agent was prepared, and 60% of an oxidizing agent (potassium nitrate), 20% of a reducing agent (dicyandiamide), 10% of a binder (phenolic resin) and 10% of a modifier (illite) were weighed as powdery raw materials, and the rest was the same as in example 1.
The samples obtained in the above examples were tested according to the drop test in XF/T499.1 and the burn rate test requirements of the hot aerosol fire suppressant generator, with the specific results shown in Table 1 below.
TABLE 1
The examples in the above table show the results of the spraying test and drop test of aerosol fire extinguishing agents prepared by different binder and regulator under the same oxidant and reducer parts, when the content of the regulator is below 5%, the spraying time is normal, but residues are sprayed, and the aerosol fire extinguishing agents cannot pass the drop test; when the proportion of the regulator is 5 or more, although the drop test only produces cracks, the combustion property of the agent is significantly adversely affected, so that the proportion of the regulator is preferably 5.
Example 5
10kg of aerosol fire extinguishing agent was prepared, 60% of oxidizing agent (potassium nitrate), 20% of reducing agent (dicyandiamide), 15% of binder (phenolic resin) and 5% of modifier (illite) were weighed, respectively pulverized with a pulverizer, and the powdery sample was mixed by sieving with a 120-mesh screen. All the powder materials are transferred to a groove type mixer, ethanol with the mass of 6% of the total material mass is added as a dispersing agent, the groove type mixer is started to form a uniform wet material mixture, and the wet material is directly transferred to a fixed 50g ultrathin sheet shell mould for compression molding. Drying the pressed tablet medicament in an environment with the temperature of 40-60 ℃ and the relative humidity of below 70% until the volatile content is less than or equal to 1%, namely, obtaining a qualified finished product, and taking the pressed ultrathin tablet medicament to perform drop test at a height of 2m when recording production.
Example 6
10kg of an aerosol fire extinguishing agent was prepared, 62% of an oxidizing agent (strontium nitrate), 23% of a reducing agent (melamine), 10% of a binder (phenolic resin) and 5% of a regulator (illite) were weighed, and the rest was the same as in example 5.
Example 7
7-1: based on example 6, the only difference is that the oxidizing agent is guanidine nitrate.
7-2: based on example 6, the only difference is that the reducing agent is aluminum powder.
7-3: based on example 6, the only difference is that the reducing agent is carbon powder.
7-4: based on example 6, the only difference is that the binder is water glass.
7-5: based on example 6, the only difference is that the binder is hydroxypropyl methylcellulose.
7-6: based on example 6, the only difference is that the binder is glucose.
7-7: based on example 6, the only difference is that the oxidizing agent is guanidine nitrate, 67% and the reducing agent melamine is 18%.
In the above examples, the main component of illite is potassium-rich silicate mica clay mineral (wherein the silicon dioxide content is 63.2%, the aluminum oxide content is 10.5%, the iron oxide content is 5.1%, and the potassium oxide content is 2.6%), the metal ions between the layers are just embedded between the sheets, the interlayer spacing is small, and the interlayer acting force is large.
Example 8
8-1: based on example 6, the only difference is that the modifier is albite (wherein the silica content is 30.3%, the alumina content is 32.4%, the sodium oxide content is 11.5%, and the alumina content is 5.7%).
8-2: the only difference was that the modifier was chlorite (35.8% silica, 21.2% iron oxide and 10.4% alumina) based on example 6.
8-3: based on example 6, the only difference is that the modifier is zeolite (with a sodium oxide content of 51.7%, a silica content of 26.2% and an alumina content of 12.3%).
Comparative example 1
10kg of aerosol fire extinguishing agent was prepared, 60% of oxidizing agent (potassium nitrate), 20% of reducing agent (dicyandiamide) and 20% of binder (phenolic resin) were weighed, respectively pulverized with a pulverizer, and the powdery sample was mixed by sieving with a 120-mesh sieve. Transferring all powder materials to a groove-type mixer, adding 6% ethanol as a dispersing agent, starting the groove-type mixer to form a uniform wet material mixture, transferring the wet material to a horizontal granulator, starting the granulator for granulating, controlling the granulator to uniformly discharge, changing a tray when the wet granule dispersing agent is accumulated to a certain height, transferring the granulated wet granule dispersing agent to an environment with the temperature of 40-60 ℃ and the relative humidity of below 70% until the volatile component content is less than or equal to 1%, performing secondary granulating to disperse the agglomerated agent, performing compression molding on the secondarily granulated dispersing agent in a 50g columnar mould, assembling the compressed and molded agent with a device, using the finished product after the assembly, taking the pressed ultrathin tablet agent to perform drop test at the height of 2 m.
Comparative example 2
10kg of aerosol fire extinguishing agent was prepared, 60% of oxidizing agent (strontium nitrate), 20% of reducing agent (melamine) and 20% of binder (phenolic resin) were weighed, respectively pulverized with a pulverizer, and the powdery sample was mixed by sieving with a 120-mesh sieve. All powder was transferred to a tank mixer and 6% ethanol was added thereto as a dispersing agent, and the tank mixer was started to form a uniform wet mixture, and the wet mixture was pressed with 50g grain molds, respectively.
Comparative example 3
10kg of aerosol fire extinguishing agent was prepared, 62% of oxidizing agent (strontium nitrate), 23% of reducing agent (melamine), 10% of binder (phenolic resin) and 5% of modifier (illite) were weighed, pulverized with a pulverizer, and the powdery sample was mixed by sieving with a 120-mesh screen. All powder was transferred to a tank mixer and 6% ethanol was added thereto as a dispersing agent, the tank mixer was started to form a uniform wet mixture, and the wet was pressed with a 50g grain die.
Comparative example 4
10kg of aerosol fire extinguishing agent was prepared, 62% of oxidizing agent (strontium nitrate), 23% of reducing agent (melamine) and 15% of binder (phenolic resin) were weighed, respectively pulverized with a pulverizer, and the powdery sample was mixed by sieving with a 120-mesh sieve. Transferring all powder materials to a groove-type mixer, adding 6% ethanol as a dispersing agent, starting the groove-type mixer to form a uniform wet material mixture, transferring the wet material to a horizontal granulator, starting the granulator for granulating, controlling the granulator to uniformly discharge, changing a tray when the wet granule dispersing agent is accumulated to a certain height, transferring the granulated wet granule dispersing agent to an environment with the temperature of 40-60 ℃ and the relative humidity of below 70% until the volatile component content is less than or equal to 1%, performing secondary granulating to disperse the agglomerated agent, performing compression molding on the secondarily granulated dispersing agent in a 50g columnar mould, assembling the compressed and molded agent with a device, using the finished product after the assembly, taking the pressed ultrathin tablet agent to perform drop test at the height of 2 m.
The samples of examples 5 to 8 and comparative examples were tested according to the drop test requirements in XF/T499.1, and the specific results are shown in Table 2 below.
TABLE 2
When 10kg of aerosol fire extinguishing agent prepared under the same instrument and equipment conditions is used in the examples and comparative examples in the data of the table, the production time used in the examples is greatly shortened, and the normal production of different aerosol medicament formulas in the examples can be realized by using the production process. Because of the limitation of the die structure, the cylindrical die is difficult to press and cannot be completely demoulded in a wet state relative to the ultrathin sheet die, the viscosity acting force of the wet material in the production process is reduced by adding the regulator, and the demould process is improved to a certain extent, so that the ultrathin sheet die is free from abnormal resistance when being pressed, and the demould process is smooth. Meanwhile, a small amount of regulator is added to improve the strength of the ultrathin aerosol fire extinguishing agent to a certain extent, replace the bonding condition of partial adhesive, improve the strength and toughness of the agent, prevent the ultrathin aerosol agent from cracking in the transportation, production, storage and use processes, and effectively realize the optimization of the production process flow of the aerosol fire extinguishing agent.
The foregoing embodiments are merely illustrative of the technical idea and features of the present invention, and the present invention is not limited to the preferred embodiments. Within the technical scope of the present disclosure, the technical solution and the invention concept according to the present disclosure are equivalent to or improved from the above description, and all the equivalent changes or modifications are included in the scope of the present disclosure.
Claims (10)
1. The ultrathin aerosol fire extinguishing agent is characterized by having a thickness of 5+/-0.5 mm and comprising the following raw materials in percentage by weight: 55-75% of oxidant, 10-25% of reducing agent, 10-15% of binder and 5-8% of regulator.
2. The ultrathin aerosol fire extinguishing agent of claim 1, wherein: the oxidant is one or more of potassium nitrate, sodium nitrate, strontium nitrate, guanidine nitrate, magnesium nitrate and barium nitrate.
3. The ultrathin aerosol fire extinguishing agent of claim 1, wherein: the reducing agent is one or more of magnesium, carbon, aluminum, iron, nitroguanidine, melamine, dicyandiamide, azodicarbonamide and urea.
4. The ultrathin aerosol fire extinguishing agent of claim 1, wherein: the adhesive is one or more of water glass, hydroxypropyl methyl cellulose, phenolic resin, epoxy resin, shellac, starch, sorbitol, glucose, acetal gum, dextrin and rubber.
5. The ultrathin aerosol fire extinguishing agent of claim 1, wherein: the regulator is one or more of illite, chlorite, zeolite and albite.
6. The production process of the ultrathin sheet aerosol fire extinguishing agent according to any one of claims 1 to 5, which is characterized by comprising the following steps:
s1, weighing raw materials, crushing and screening, and screening and mixing a powdery sample according to a proportion;
s2, adding a dispersing agent into the mixed material of the S1 to carry out mixing and dispersing treatment to obtain a wet material;
s3, directly transferring the wet material into an ultrathin sheet shell mould, pressing, forming, demoulding and drying to obtain the ultrathin sheet aerosol fire extinguishing agent.
7. The production process according to claim 6, characterized in that: and (3) screening in the step S1, wherein the screen mesh is 40-100 meshes.
8. The production process according to claim 6, characterized in that: the dispersant in S2 is methanol or ethanol; the addition amount is 5-12% of the mass of the powdery material.
9. The production process according to claim 6, characterized in that: and S3, drying at 40-60 ℃ until the volatile content in the material is less than or equal to 1%, wherein the relative humidity of the environment during drying is below 70%.
10. Use of the ultra-thin sheet aerosol fire extinguishing agent of any one of claims 1-5 in confined space or slit scene fire extinguishing.
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