CN117774467A - Flame-retardant fabric for fire-fighting respirator braid and preparation method thereof - Google Patents
Flame-retardant fabric for fire-fighting respirator braid and preparation method thereof Download PDFInfo
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- CN117774467A CN117774467A CN202311784720.7A CN202311784720A CN117774467A CN 117774467 A CN117774467 A CN 117774467A CN 202311784720 A CN202311784720 A CN 202311784720A CN 117774467 A CN117774467 A CN 117774467A
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- succinic anhydride
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 79
- 239000004744 fabric Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims description 21
- 239000003292 glue Substances 0.000 claims abstract description 40
- 239000010410 layer Substances 0.000 claims abstract description 40
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 38
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 38
- 239000010452 phosphate Substances 0.000 claims abstract description 38
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229940014800 succinic anhydride Drugs 0.000 claims abstract description 33
- 229920002472 Starch Polymers 0.000 claims abstract description 29
- 235000019698 starch Nutrition 0.000 claims abstract description 29
- 239000008107 starch Substances 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002344 surface layer Substances 0.000 claims abstract description 16
- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- 238000013329 compounding Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000004642 Polyimide Substances 0.000 claims description 8
- 229920001721 polyimide Polymers 0.000 claims description 8
- FLISWPFVWWWNNP-BQYQJAHWSA-N dihydro-3-(1-octenyl)-2,5-furandione Chemical compound CCCCCC\C=C\C1CC(=O)OC1=O FLISWPFVWWWNNP-BQYQJAHWSA-N 0.000 claims description 7
- YAXXOCZAXKLLCV-UHFFFAOYSA-N 3-dodecyloxolane-2,5-dione Chemical compound CCCCCCCCCCCCC1CC(=O)OC1=O YAXXOCZAXKLLCV-UHFFFAOYSA-N 0.000 claims description 6
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 6
- 239000004965 Silica aerogel Substances 0.000 claims description 5
- 239000004760 aramid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- YRTGWRSQRUHPKX-UHFFFAOYSA-N 3-ethyloxolane-2,5-dione Chemical compound CCC1CC(=O)OC1=O YRTGWRSQRUHPKX-UHFFFAOYSA-N 0.000 claims description 3
- DFATXMYLKPCSCX-UHFFFAOYSA-N 3-methylsuccinic anhydride Chemical compound CC1CC(=O)OC1=O DFATXMYLKPCSCX-UHFFFAOYSA-N 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 2
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 38
- 230000000052 comparative effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 238000002844 melting Methods 0.000 description 11
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 230000008018 melting Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000011056 performance test Methods 0.000 description 7
- 230000002401 inhibitory effect Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000004964 aerogel Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000001384 succinic acid Substances 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000032050 esterification Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000000242 pagocytic effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The application relates to the field of fire-fighting equipment, in particular to a fire-retardant fabric for a fire-fighting respirator braid and a preparation method thereof. The fire-retardant fabric for the fire-fighting respirator braid is formed by compounding a heat insulation layer, a fireproof adhesive layer and a surface layer which are sequentially arranged from inside to outside; the fireproof glue layer is prepared by solidifying fireproof glue solution, and the fireproof glue solution is prepared by heating and mixing starch, phosphate and succinic anhydride in ethanol solution. The specific layer structure and the additionally arranged fireproof adhesive layer in the application endow the fabric with overall excellent high temperature resistance and fire resistance mainly through multistage modification of starch, and can effectively inhibit fusion of the braid, thereby reducing operation risks of firefighters.
Description
Technical Field
The application relates to the field of fire-fighting equipment, in particular to a fire-retardant fabric for a fire-fighting respirator braid and a preparation method thereof.
Background
The fire-fighting respirator is a self-contained open type air respirator which is widely applied to the field of fire fighting and is used for fire fighters or rescue workers to safely and effectively extinguish fire in various environments such as dense smoke, toxic gas, steam or oxygen deficiency, etc., rescue and relief work; fire-fighting respirators in the related art, including full face masks, gas supply valves, gas pressure cylinders, residual gas alarms and webbing for fixing the respirator body, have the risk of melting the webbing for the rescue workers for fixing the respirator body in a high-heat environment for a long time because firefighters sometimes need to traverse fire fields;
the quality of the braid can directly influence the rescue safety, the existing braid is mainly made of spinning wheel materials, the existing braid only has requirements on flame retardant property of the materials, but cannot meet the requirements of the braid on flame phagocytic property, and the braid still has higher potential safety hazard, so that the flame retardant fabric for the fire-fighting respirator braid and the preparation method thereof are provided.
Disclosure of Invention
In order to improve the technical problem, the application particularly provides a fire-retardant fabric for a fire-fighting respirator braid and a preparation process thereof, and the fabric is provided with a fireproof adhesive layer, so that the excellent high-temperature resistance and fire resistance of the floor fabric are provided, the braid melting can be effectively inhibited, and the risk of firefighters is reduced.
In a first aspect, the present application provides a fire-retardant fabric for a fire-fighting respirator webbing, which adopts the following technical scheme:
the fire-retardant fabric for the fire-fighting respirator braid is formed by compounding a heat insulation layer, a fireproof adhesive layer and a surface layer which are sequentially arranged from inside to outside;
the fireproof glue layer is prepared by solidifying fireproof glue solution, and the fireproof glue solution is prepared by heating and mixing starch, phosphate and succinic anhydride in ethanol solution.
By adopting the technical scheme, the flame-retardant fabric formed by compounding the heat insulation layer, the fireproof adhesive layer and the surface layer is synergistic with a multilayer structure, so that excellent high temperature resistance and high temperature stability are obtained, and the fabric is not easy to melt at high temperature when being applied to a fire-fighting respirator braid;
the reason for this may be analyzed as follows: after the starch in the fireproof adhesive layer is blended with phosphate and succinic anhydride, a series of reactions such as crosslinking and esterification occur, so that a stable substance similar to succinic acid starch phosphate is formed, and the component has excellent anti-melting and flame-retardant effects.
Preferably, the weight ratio of the starch to the phosphate to the succinic anhydride is 1 (0.03-0.05): 0.1-0.3.
Preferably, the phosphate is one or more of sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate.
Preferably, the succinic anhydride is one or more of 2-methylsuccinic anhydride, 2-ethylsuccinic anhydride, dodecylsuccinic anhydride and octenyl succinic anhydride.
Preferably, the succinic anhydride is composite succinic anhydride, and specifically consists of dodecyl succinic anhydride and octenyl succinic anhydride according to the weight ratio of 1 (0.3-0.5).
Preferably, the specific preparation steps of the fireproof glue solution are as follows:
firstly, mixing starch into ethanol solution and mixing into paste, then adding phosphate, mixing and heating at 68-82 ℃ for 0.5-1.5h, then adding succinic anhydride and continuing mixing for 2.4-3.6h, thus obtaining the fireproof glue solution.
By adopting the technical scheme, the fireproof glue solution prepared by the components and the process with the specific proportion has more remarkable multi-component compounding effect, the continuous burning time of the final product can be controlled by controlling the generation amount of the succinic acid starch phosphate, and in addition, the succinic anhydride component also has a compounding preferable group.
Preferably, the heat insulation layer is a fiber/gel heat insulation layer;
the fiber/gel heat insulation layer is formed by compounding polyimide fibers and silica aerogel.
Preferably, the weight ratio of the polyimide fiber to the silica aerogel is 1 (0.5-0.8).
By adopting the technical scheme, the fiber/gel heat insulation layer formed by polyimide fiber and silicon dioxide aerogel according to a specific weight ratio can effectively block heat through the air holes of the components and the network skeleton formed by the fiber, so that the influence of external temperature measurement is reduced.
Preferably, the surface layer is woven by one or more of polysulfonamide fibers, aramid fibers, polyacrylonitrile fibers and polyvinyl alcohol fibers.
By adopting the technical scheme, the surface layer formed by the fiber with certain flame retardance can effectively meet the application requirements of basic products, and has better compatibility with fireproof glue solution.
In a second aspect, the present application provides a method for preparing a fire-retardant fabric for a fire-fighting respirator webbing, which adopts the following technical scheme:
a preparation method of a flame-retardant fabric for a fire-fighting respirator braid comprises the following specific steps:
firstly preparing a heat insulation layer and a surface layer correspondingly, then coating a protective glue solution on the heat insulation layer, then adding the surface layer, carrying out hot-pressing compounding, and obtaining the fire-retardant fabric for the fire-fighting respirator braid after the ethanol solution is removed and the solidification is completed.
By adopting the technical scheme, the preparation conditions are obviously simplified, the fireproof glue solution can be cured for compounding after each layer is prefabricated, the use of an additional cementing agent is omitted, and the product quality is stable and uniform, has excellent high temperature resistance and fire resistance, and is suitable for industrialization.
In summary, the present application has the following beneficial effects:
1. according to the flame-retardant fabric compounded by the heat insulation layer, the fireproof adhesive layer and the surface layer, excellent high temperature resistance and high temperature stability are obtained through cooperation of a multi-layer structure, and then the fabric is not easy to melt at high temperature when being applied to a fire-fighting respirator braid;
2. the fireproof adhesive layer mainly carries out crosslinking, esterification and other reactions on starch, phosphate and succinic anhydride to form a thermally stable substance similar to succinic acid starch phosphate, and the component gives the fabric excellent anti-melting and flame-retardant effects;
3. the fiber/gel heat insulation layer formed by polyimide fiber and silicon dioxide aerogel according to a specific weight ratio can effectively block heat through the air holes of the components and the network skeleton formed by the fiber, so that the influence of external temperature is reduced;
4. the preparation process is remarkably simplified, and meanwhile, no additional cementing agent is needed, so that the preparation process is more suitable for industrialized production, and the product quality is stable and uniform, has excellent high temperature resistance and flame retardance, and can effectively meet the operation of the fire-fighting field.
Detailed Description
The present application is described in further detail below with reference to examples.
Preparation example
Preparation example 1
The fireproof glue solution is prepared by the following steps:
firstly, mixing starch into ethanol solution, mixing into paste, adding phosphate, and mixing and heating at 68 ℃ for 1.5h; adding succinic anhydride and continuously mixing for 2.4 hours to obtain fireproof glue solution;
wherein the phosphate is sodium hexametaphosphate, the succinic anhydride is octenyl succinic anhydride, and the weight ratio of the starch to the phosphate to the succinic anhydride in the preparation raw materials is 1:0.02:0.05.
PREPARATION EXAMPLES 2 to 5
The difference between the fireproof glue solution and the preparation example 1 is that the ratio of the adopted preparation raw materials is different, and the specific ratio is shown in the following table.
Preparation examples 6 to 10
The difference between the fireproof glue solution and the preparation example 1 is that the phosphate is used in different conditions, and the specific conditions are shown in the following table.
Preparation examples 11 to 18
The difference between the fireproof glue solution and the preparation example 1 is that the succinic anhydride is used in different conditions, and the specific conditions are shown in the following table.
Preparation example 19
The fire-retardant glue solution is different from the preparation example 1 in that the preparation steps are as follows:
firstly, mixing starch into ethanol solution and mixing into paste, then adding phosphate, mixing and heating at 75 ℃ for 1.0h, then adding succinic anhydride and continuing mixing for 3.2h, thus obtaining the fireproof glue solution.
Preparation example 20
The fire-retardant glue solution is different from the preparation example 1 in that the preparation steps are as follows:
firstly, mixing starch into ethanol solution and mixing into paste, then adding phosphate, mixing and heating at 82 ℃ for 0.5h, then adding succinic anhydride and continuing mixing for 3.6h, thus obtaining the fireproof glue solution.
Performance test
The flame retardant fabric (thickness 3.0 mm) prepared in each of the following examples and/or comparative examples was selected as a test object, and the flame retardation time was tested under the following specific detection conditions:
firstly, adjusting the flame height of a burner to 40+/-5 mm by adjusting the flow of propane gas, wherein the temperature at the position 20mm away from the flame height is (800+/-50);
then the sample is horizontally placed at a position which is 20mm away from the flame for 12 seconds, whether the sample (three groups are arranged in parallel) has a post-combustion phenomenon or not is observed, if the post-combustion phenomenon exists, an average value is obtained, and the post-combustion time is recorded.
Examples
Example 1
The fire-retardant fabric for the fire-fighting respirator braid is formed by compounding a heat insulation layer (with the thickness of 1.0 mm), a fire-retardant adhesive layer (with the thickness of 1.5 mm) and a surface layer (with the thickness of 0.5 mm) which are sequentially arranged from inside to outside;
wherein the heat insulation layer is a silica aerogel layer, the fireproof adhesive layer is formed by solidifying the fireproof adhesive solution obtained in preparation example 1, and the surface layer is an aramid layer woven by aramid fibers;
the specific preparation method of the flame-retardant fabric comprises the following steps:
firstly preparing a heat insulation layer and a surface layer correspondingly, then coating a protective glue solution on the heat insulation layer, then adding the surface layer, and carrying out hot pressing and compounding for 30+/-5 min at 100 ℃, and obtaining the fire-retardant fabric for the fire-fighting respirator braid after the ethanol-removed aqueous solution is completely solidified.
Comparative example 1
The fire-retardant fabric for the fire-fighting respirator webbing differs from example 1 only in that the composition of the fire-retardant adhesive layer is different, the composition does not contain phosphate, and the phosphate in the original composition is replaced by equal amount of succinic anhydride.
Comparative example 2
The fire-retardant fabric for the fire-fighting respirator webbing differs from example 1 only in that the composition of the fire-retardant adhesive layer is different, the composition does not contain succinic anhydride, and the succinic anhydride in the original composition is replaced by an equivalent amount of phosphate.
Comparative example 3
The fire-retardant fabric for the fire-fighting respirator webbing differs from example 1 only in that the composition of the fire-retardant glue layer is different, and the fire-retardant glue solution is composed of 80wt% of acrylic resin, 12% of Portland cement and 8wt% of aluminum silicate fiber.
The flame retardant fabrics prepared in the above example 1 and comparative examples 1 to 3 were extracted as test objects, and then their post-ignition time was tested according to the above procedure, and the average value of the test results was recorded in the following table.
Table: example 1 and comparative examples 1-3 Performance test results
From the above table, it can be seen that the fire-retardant fabric for the fire-fighting respirator webbing, which is obtained in the embodiment 1, has excellent fire-retardant performance, and the continuous combustion time is only 5.0S, so that the fire-retardant fabric can effectively meet the application in fire-fighting operation, and can ensure the operation safety by inhibiting the webbing from melting;
therefore, the flame-retardant fabric compounded by the specific heat-insulating layer, the fireproof adhesive layer and the surface layer can obtain extremely excellent high temperature resistance and high temperature stability through the cooperation of a multi-layer structure, and the performances of the final product are improved to different degrees compared with those of comparative examples 1-3;
the reason for this may be analyzed as follows: after the starch in the fireproof adhesive layer is blended with phosphate and succinic anhydride, crosslinking and esterification reactions are sequentially carried out, so that stable substances similar to succinic acid starch phosphate are formed, and the components have excellent anti-melting and flame-retardant effects, so that the performances of the comparative examples 1-2 without any component are reduced to different degrees due to the influence on the generation of succinic acid starch phosphate substances.
Examples 2 to 5
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the fire-retardant fabric for the fire-fighting respirator webbing is that the fire-retardant glue solution used is different in use condition, and the specific corresponding relation is shown in the table below.
Table: comparative Table of use of fireproof glue in examples 2-5
The flame retardant fabrics prepared in examples 2 to 5 were extracted as test objects, and then the flame retardation time was measured according to the above procedure, and the average value of the test results was recorded in the following table.
Table: examples 2-5 Performance test results
From the above table, it can be seen that the fire-retardant fabric for the fire-fighting respirator webbing, which is obtained in examples 2-5, has excellent fire-retardant performance, and the continuous combustion time is only 3.8-4.5S, so that the fire-fighting fabric can effectively meet the application in fire-fighting operation, and the operation safety can be ensured by inhibiting the webbing from melting;
it is thus seen that the weight ratio of starch, phosphate and succinic anhydride directly affects the properties of the final product, and that the preferred weight ratio of starch, phosphate and succinic anhydride is 1 (0.03-0.05): 0.1-0.3, as is also known from examples 2-4;
in summary, the analysis may be related to the production amount of the succinic starch phosphate, and the production is affected when the amount of the succinic starch phosphate is too low, the subsequent esterification is affected due to insufficient pre-crosslinking, and the reaction is affected due to the change of pH when the amount of the succinic starch phosphate is too high.
Examples 6 to 10
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the fire-retardant fabric for the fire-fighting respirator webbing is that the fire-retardant glue solution used is different in use condition, and the specific corresponding relation is shown in the table below.
Table: comparative Table of use cases of fireproof glue solutions in examples 6 to 10
The flame retardant fabrics prepared in examples 6 to 10 were extracted as test objects, and then the flame retardation time was measured according to the above procedure, and the average value of the test results was recorded in the following table.
Table: examples 6 to 10 Performance test results
From the above table, it can be seen that the fire-retardant fabric for the fire-fighting respirator webbing, which is obtained in examples 6-10, has excellent fire-retardant performance, and the continuous combustion time is only 4.8-6.5S, so that the fire-fighting fabric can effectively meet the application in fire-fighting operation, and the operation safety can be ensured by inhibiting the webbing from melting;
it is therefore seen that the phosphate is preferably one or more of sodium hexametaphosphate, sodium tripolyphosphate and so, and it is also seen from examples 9 to 10 that there is no preference for the use of phosphate in combination, and it is possible to analyze that the reason for this is that the phosphate is only an intermediate reaction raw material and has a small influence on the final properties.
Examples 11 to 18
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the fire-retardant fabric for the fire-fighting respirator webbing is that the fire-retardant glue solution used is different in use condition, and the specific corresponding relation is shown in the table below.
Table: comparison table of use cases of fireproof glue solutions in examples 11 to 18
The flame retardant fabrics prepared in examples 11 to 18 were extracted as test objects, and then the flame retardation time was measured according to the above procedure, and the average value of the test results was recorded in the following table.
Table: examples 11-18 Performance test results
From the above table, it can be seen that the fire-retardant fabric for the fire-fighting respirator webbing obtained in examples 11-18 has excellent fire-retardant performance, and the continuous combustion time is only 3.5-5.4S, so that the fire-fighting fabric can effectively meet the application in fire-fighting operation, and the operation safety can be ensured by inhibiting the webbing from melting;
it can be seen that succinic anhydride is preferably one or more of 2-methylsuccinic anhydride, 2-ethylsuccinic anhydride, dodecylsuccinic anhydride and octenyl succinic anhydride, and examples 14 to 18 also show that succinic anhydride is preferred for combination use;
it is particularly preferable that the composition comprises dodecyl succinic anhydride and octenyl succinic anhydride according to the weight ratio of 1 (0.3-0.5), and the analysis is possible that the type of the finally formed succinic starch phosphate substance is optimized through the specific selection and the compounding of the succinic anhydride.
Examples 19 to 20
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the fire-retardant fabric for the fire-fighting respirator webbing is that the fire-retardant glue solution used is different in use condition, and the specific corresponding relation is shown in the table below.
Table: comparison Table of use cases of fireproof glue solutions in examples 19 to 20
| Group of | Fireproof adhesiveLiquid and its preparation method |
| Example 19 | From preparation 19 |
| Example 20 | From preparation example 20 |
Comparative example 4
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the example 1 is that the preparation method of the fire-retardant latex is different, and the specific parameters are as follows:
firstly, mixing starch into ethanol solution and mixing into paste, then adding phosphate, mixing and heating at 100 ℃ for 0.5h, then adding succinic anhydride and continuing mixing for 1.0h, thus obtaining the fireproof glue solution.
The flame retardant fabrics prepared in examples 19 to 20 and comparative example 4 were extracted as test objects, and then their post-ignition times were tested according to the above procedure, and the average value of the test results was recorded in the following table.
Table: examples 19 to 20, comparative example 4 Performance test results
From the above table, it can be seen that the fire-retardant fabric for the fire-fighting respirator webbing obtained in examples 19 to 20 has excellent fire-retardant performance, and the continuous combustion time is only 4.9 to 5.0S, so that the fire-retardant fabric can effectively meet the application in fire-fighting operation, and the operation safety can be ensured by inhibiting the webbing from melting;
thus, in combination with examples 1, 19-20 and comparative example 4, preferred preparation conditions are as follows:
firstly, starch is mixed in ethanol solution and is mixed into paste, phosphate is added, and mixed and heated for 0.5-1.5h at 68-82 ℃, succinic anhydride is added, and mixed for 2.4-3.6h, finally, the ethanol solution is removed to obtain fireproof glue solution, the continuous burning time of comparative example 4 exceeding the condition is obviously increased, and analysis possibly relates to the change of reaction conditions of succinic starch phosphate substances.
Examples 21 to 25
The difference between the fire-retardant fabric for the fire-fighting respirator webbing and the fire-retardant fabric for the fire-fighting respirator webbing are that the composition of the adopted raw materials of the heat-insulating layer is different, and the specific corresponding relation is shown in the following table.
Table: comparison Table of Heat insulation layer usage in examples 21-25
The flame retardant fabrics prepared in examples 21 to 25 were extracted as test subjects, and then their post-ignition times were tested according to the above procedure, and the average value of the test results was recorded in the following table.
Table: examples 21 to 25 Performance test results
As can be seen from the above table, the fire-retardant fabric for the fire-fighting respirator webbing, which is obtained in examples 21 to 25, has excellent fire-retardant performance, and the continuous combustion time is only 3.3 to 4.5S, so that the fire-fighting fabric can effectively meet the application in fire-fighting operation, and the operation safety can be ensured by inhibiting the webbing from melting;
therefore, the heat insulation layer is preferably a polyimide fiber/silicon dioxide aerogel heat insulation layer, and the preferable weight ratio of the polyimide fiber to the silicon dioxide aerogel is 1 (0.3-0.5), compared with the conventional use of the silicon dioxide aerogel as the heat insulation layer, the performance of the heat insulation layer is further improved;
the reasons for this analysis may be: the fiber/gel heat insulation layer with specific components and weight can effectively block heat through the air holes of the components and the network framework formed by the fibers, so that the influence of external temperature is reduced, and the network framework is not too dense or too loose.
This specific application is intended to be illustrative only and not limiting of the invention, as modifications of the application may be made as necessary by those skilled in the art after reading the specification without inventive contribution, but are intended to be protected by the patent laws within the scope of the appended claims.
Claims (10)
1. The fire-retardant fabric for the fire-fighting respirator braid is characterized by being formed by compounding a heat insulation layer, a fire-retardant adhesive layer and a surface layer which are sequentially arranged from inside to outside;
the fireproof glue layer is prepared by solidifying fireproof glue solution, and the fireproof glue solution is prepared by heating and mixing starch, phosphate and succinic anhydride in ethanol solution.
2. The fire-retardant fabric for a fire-fighting respirator webbing of claim 1, wherein the weight ratio of starch, phosphate and succinic anhydride is 1 (0.03-0.05): (0.1-0.3).
3. The flame retardant facer for a fire-fighting respirator webbing of claim 2, wherein the phosphate is one or more of sodium hexametaphosphate, sodium tripolyphosphate, and sodium pyrophosphate.
4. The fire resistant fabric for a fire-fighting respirator webbing of claim 2, wherein the succinic anhydride is one or more of 2-methyl succinic anhydride, 2-ethyl succinic anhydride, dodecyl succinic anhydride, and octenyl succinic anhydride.
5. The fire-retardant fabric for the fire-fighting respirator webbing according to claim 4, wherein the succinic anhydride is composite succinic anhydride, and specifically consists of dodecyl succinic anhydride and octenyl succinic anhydride in a weight ratio of 1 (0.3-0.5).
6. The fire-retardant fabric for fire-fighting respirator webbing as in any one of claims 1-4, wherein the specific preparation steps of the fire-retardant glue solution are as follows:
firstly, mixing starch into ethanol solution and mixing into paste, then adding phosphate, mixing and heating at 68-82 ℃ for 0.5-1.5-h, then adding succinic anhydride and continuously mixing for 2.4-3.6-h, thus obtaining the fireproof glue solution.
7. The fire resistant fabric for a fire protection respirator webbing of claim 1, wherein the insulation layer is a fibrous/gel insulation layer;
the fiber/gel heat insulation layer is formed by compounding polyimide fibers and silica aerogel.
8. The fire resistant fabric for a fire-fighting respirator webbing of claim 7, wherein the weight ratio of polyimide fibers to silica aerogel is 1 (0.5-0.8).
9. The fire-retardant fabric for a fire-fighting respirator webbing of claim 1, wherein the skin layer is woven from one or more of polysulfonamide fibers, aramid fibers, polyacrylonitrile fibers, and polyvinyl alcohol fibers.
10. A process for preparing the flame retardant fabric for the fire-fighting respirator webbing according to any one of claims 1 to 9, which is characterized by comprising the following preparation steps:
firstly preparing a heat insulation layer and a surface layer correspondingly, then coating a protective glue solution on the heat insulation layer, then adding the surface layer, carrying out hot-pressing compounding, and obtaining the fire-retardant fabric for the fire-fighting respirator braid after the ethanol solution is removed and the solidification is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784720.7A CN117774467A (en) | 2023-12-23 | 2023-12-23 | Flame-retardant fabric for fire-fighting respirator braid and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784720.7A CN117774467A (en) | 2023-12-23 | 2023-12-23 | Flame-retardant fabric for fire-fighting respirator braid and preparation method thereof |
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| CN117774467A true CN117774467A (en) | 2024-03-29 |
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| CN202311784720.7A Pending CN117774467A (en) | 2023-12-23 | 2023-12-23 | Flame-retardant fabric for fire-fighting respirator braid and preparation method thereof |
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| Country | Link |
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| CN (1) | CN117774467A (en) |
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