CN115704187B - Halogen-free flame-retardant belt and preparation method thereof - Google Patents
Halogen-free flame-retardant belt and preparation method thereof Download PDFInfo
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- CN115704187B CN115704187B CN202110926249.5A CN202110926249A CN115704187B CN 115704187 B CN115704187 B CN 115704187B CN 202110926249 A CN202110926249 A CN 202110926249A CN 115704187 B CN115704187 B CN 115704187B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 114
- 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 abstract description 96
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000004677 Nylon Substances 0.000 claims abstract description 79
- 229920001778 nylon Polymers 0.000 claims abstract description 79
- 239000004744 fabric Substances 0.000 claims abstract description 52
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- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000007598 dipping method Methods 0.000 claims abstract description 3
- 150000002632 lipids Chemical class 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 18
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 9
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 8
- 150000003904 phospholipids Chemical class 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- KILNVBDSWZSGLL-KXQOOQHDSA-N 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCC KILNVBDSWZSGLL-KXQOOQHDSA-N 0.000 claims description 3
- SORGEQQSQGNZFI-UHFFFAOYSA-N [azido(phenoxy)phosphoryl]oxybenzene Chemical compound C=1C=CC=CC=1OP(=O)(N=[N+]=[N-])OC1=CC=CC=C1 SORGEQQSQGNZFI-UHFFFAOYSA-N 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000000887 hydrating effect Effects 0.000 claims description 3
- 238000009940 knitting Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009941 weaving Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 229910012375 magnesium hydride Inorganic materials 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- MLHOXUWWKVQEJB-UHFFFAOYSA-N Propyleneglycol diacetate Chemical compound CC(=O)OC(C)COC(C)=O MLHOXUWWKVQEJB-UHFFFAOYSA-N 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000011257 shell material Substances 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000012258 stirred mixture Substances 0.000 description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a halogen-free flame-retardant belt and a preparation method thereof, relating to the technical field of cables; the halogen-free flame-retardant belt is prepared by dipping and drying nylon cloth in flame-retardant liquid; the flame-retardant liquid comprises acrylic emulsion, a water-based cross-linking agent and a flame retardant; the flame-retardant belt prepared by the invention is green and environment-friendly, has good flame retardant property and flexibility, and has higher tensile strength; the nylon cloth is formed by weaving superfine nylon wires, the prepared flame-retardant belt is ultrathin, and is particularly suitable for flame-retardant cables with strictly controlled outer diameters of sections of wires and cables, the cost performance is high, and meanwhile, excellent flame-retardant effects can be achieved; the invention also aims to provide a preparation method of the halogen-free flame-retardant belt, which is simple and easy to operate and has controllable preparation process.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a halogen-free flame retardant belt and a preparation method thereof.
Background
The flame-retardant power cable is characterized in that a sample is burnt under a specified test condition, and after a test fire source is removed, flame spread is only within a limited range, and residual flame or residual burning can be automatically extinguished within a limited time. The fundamental characteristics are: in the case of fire, it may burn out and fail to operate, but the spread of fire is prevented. In popular terms, the electric wire can limit combustion to a local range in case of fire, does not spread, and can hold other various devices, thereby avoiding larger loss.
Existing flame retardant power cables are mainly divided into two categories: halogen-containing flame-retardant power cables and halogen-free low-smoke flame-retardant power cables, the former have good flame-retardant characteristics, but when the cables burn, a large amount of dense smoke and halogen acid gas are released, the halogen acid gas has corrosive harm to surrounding electrical equipment, and rescue workers need to carry a gas mask to put out fire in the vicinity of the scene. The cable causes harm to surrounding electrical equipment and rescue workers when burning, which is unfavorable for fire-extinguishing rescue work, thereby causing serious secondary harm. The latter not only has better flame retardant property, but also has no halogen acid gas emission when the cable burns, and the smoke emission amount of the cable is small, but has poor mechanical property, easy deformation and low service life.
The cable comprises a cable core, a flame-retardant belt and other protective layers, wherein the flame-retardant belt is wrapped on the outer layer of the cable core, is used as an indispensable part in the cable, has an important influence on the flame retardance and mechanical properties of the cable, and is poor in flame retardance or easy to deform.
Therefore, it is urgent to find a flame retardant tape which is environmentally friendly, has good flame retardant properties and has good mechanical properties.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) of the prior art and provides a halogen-free flame-retardant belt which has excellent flame retardant property and good mechanical property on the premise of ensuring green environmental protection.
The invention further aims to provide a preparation method of the halogen-free flame retardant tape.
The technical scheme adopted by the invention is that the halogen-free flame-retardant belt is prepared by dipping and drying nylon cloth by flame-retardant liquid; the flame-retardant liquid comprises acrylic emulsion, a water-based cross-linking agent and a flame retardant.
According to the invention, nylon cloth is used as base material cloth, and is very suitable for being used as a base material of a flame-retardant belt due to excellent flexibility and wear resistance, on the other hand, the nylon belt is completely wrapped by the flame-retardant liquid by immersing the nylon belt in the flame-retardant liquid, so that the nylon belt has excellent flame-retardant effect.
Further, the flame retardant liquid comprises the following components in parts by weight:
50-80 parts of acrylic emulsion;
5-10 parts of water-based cross-linking agent;
3-15 parts of flame retardant.
Preferably, the flame retardant liquid comprises the following components in parts by weight:
55 parts of acrylic emulsion;
8 parts of water-based cross-linking agent;
12 parts of flame retardant.
Preferably, the acrylic emulsion is the Dow acrylic polymer emulsion Primal B-959, america.
Further, the aqueous cross-linking agent is one or more selected from aliphatic polyurethane, 1, 2-propylene glycol diacetate, polyethylene glycol-2-acrylate, polyisocyanate, diisocyanate, ethylene glycol dimethacrylate, diallyl dimethyl ammonium chloride and N-methylolacrylamide.
Preferably, the aqueous cross-linking agent is selected from one or two of aliphatic polyurethane and 1, 2-propylene glycol diacetate.
More preferably, the aqueous crosslinking agent consists of aliphatic polyurethane and 1, 2-propylene glycol diacetate, wherein the aliphatic polyurethane is 48-52 wt% and the 1, 2-propylene glycol diacetate is 19-52 wt%.
Further, the flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, zinc oxide and antimony trioxide.
Further, the flame retardant liquid also comprises 1 to 5 weight parts of lipid microbubbles.
The lipid microbubble shell is a phospholipid component and is coated with carbon dioxide, the phospholipid shell material can provide certain flame retardance, and when being damaged by heating, the lipid microbubble shell can instantaneously release the coated gas carbon dioxide, so that oxygen contact in a heated environment is rapidly limited, and a flame retardant effect is achieved.
Further, the lipid microvesicles are obtained by the following preparation method:
(1) According to the mass ratio of 1g:5g:1g of DPPC, DSPE-PEG5000 and DPPA are weighed and dissolved in 10ml of chloroform, and sealed ultrasonic oscillation is carried out for 1min to obtain phospholipid dispersion liquid;
(2) Evaporating phospholipid dispersion liquid at 50deg.C under reduced pressure under 0.1Mpa at 120r/min for 45min to form uniform milky thin film;
(3) Eluting with 5ml PBS, hydrating, and placing in a sealed bottle;
(4) CO 2 gas was introduced to displace the air in the bottle, followed by shaking for 1min. And centrifuged at 500rpm/min 2 times to obtain purified lipid microbubbles entrapping CO 2.
(5) The lipid microvesicles are diluted in water according to the proportion of 10 percent, and the lipid microvesicles are the lipid microvesicle component reagent.
Further, the nylon cloth is formed by crisscross knitting of a plurality of nylon wires with the diameter of 0.07-0.09 mm.
The nylon cloth formed by crisscross knitting can enable the nylon cloth to have better tensile strength, and in the invention, the longitudinal tensile strength of the nylon cloth is more than or equal to 95N/cm; the longitudinal elongation is more than or equal to 20 percent; the transverse tensile strength is more than or equal to 70N/cm; the transverse elongation is more than or equal to 20 percent.
Further, in the nylon cloth, the number ratio of the nylon filaments of the warp to the nylon filaments of the weft is 3:1-1:1, namely, the number ratio of the nylon filaments arranged longitudinally to the nylon filaments arranged transversely is 3:1-1:1. Further, the number ratio of the nylon filaments arranged longitudinally to the nylon filaments arranged transversely is 2.5:1-1.5:1. Further, the number ratio of the nylon filaments arranged longitudinally to the nylon filaments arranged transversely is 2.5:1-2:1. Further, the number ratio of longitudinally arranged nylon filaments to transversely arranged nylon filaments is 2.0625:1.
The preparation method of the halogen-free flame-retardant belt comprises the following steps:
s1: preparing a flame retardant liquid;
S2: soaking nylon cloth in the flame-retardant liquid;
S3: drying the soaked nylon cloth and airing;
S4: and (5) rolling and cutting.
Further, the specific steps are as follows:
S1: grinding the acrylic emulsion, the water-based crosslinking agent and the flame retardant according to the proportion, and then placing the ground acrylic emulsion, the water-based crosslinking agent and the flame retardant into a stirring tank for fully stirring to obtain flame retardant liquid;
s2: pouring the flame-retardant liquid prepared in the step S1 into a trough, putting nylon cloth into the trough, soaking for 3-5 min, taking out and draining;
S3: placing the soaked nylon of S2 in a baking oven, and baking for 6-15S at 100-120 ℃;
s4: and (3) rolling the nylon cloth soaked with the flame retardant liquid, and cutting the nylon cloth into strips to obtain the halogen-free flame retardant belt.
Further, the mode of adhering the flame retardant liquid to the nylon cloth in the step 3 also comprises brushing.
Further, in step S3, the soaked nylon cloth is baked in three steps, wherein the first baking temperature is 120-150 ℃, the second baking temperature is 120-130 ℃, and the third baking temperature is 110-125 ℃. Each baking time is 2-5 s.
The halogen-free flame-retardant tape disclosed by the invention is low in smoke, halogen-free, free of harmful substances, free of glass fiber and asbestos components, and in line with the RoHS standard of government, is mainly used for various special cables and high-grade cables, has good flame retardant property and tensile strength, and good flexibility, and is suitable for factory wrapping operation.
Compared with the prior art, the invention has the beneficial effects that:
1. the flame-retardant belt is environment-friendly, good in flame retardant property, good in flexibility and high in tensile strength;
2. The preparation method of the flame-retardant belt is simple and easy to operate, and the preparation process is controllable;
3. The nylon cloth is formed by weaving superfine nylon wires, and the prepared flame-retardant belt is ultrathin, so that the nylon cloth is particularly suitable for flame-retardant cables with strictly controlled outer diameters of sections of wires and cables, has high cost performance and can achieve excellent flame-retardant effect.
Detailed Description
The present embodiments are to be considered in all respects as illustrative and not restrictive.
Example 1
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected, and the ratio of warp yarns to weft yarns is 2:1, the following examples are identical;
s2: preparing a flame retardant liquid:
55 parts of acrylic emulsion (Primal B-959);
8 parts of an aqueous cross-linking agent (AQUADERM XL-50);
12 parts of magnesium hydroxide;
Uniformly grinding the acrylic emulsion, the water-based crosslinking agent and the magnesium hydride in a grinder, then placing the ground magnesium hydride in a stirring tank, fully and uniformly stirring, and pouring the stirred mixture into a trough for standby;
s3: placing the nylon cloth of the S1 into a trough for soaking for 3min, and taking out and draining;
S4: putting the S3 soaked nylon cloth into a baking oven, baking for 3S at 135 ℃, then baking for 2S at 130 ℃, and finally baking for 5S at 120 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 2
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
80 parts of acrylic emulsion (Primal B-959);
10 parts of aqueous cross-linking agent (AQUADERM XL-50);
15 parts of magnesium hydroxide;
Uniformly grinding the acrylic emulsion, the water-based crosslinking agent and the aluminum hydride in a grinder, then placing the ground product in a stirring tank, fully and uniformly stirring, and pouring the stirred product into a trough for standby;
S3: putting the nylon cloth of the S1 into a trough for soaking for 4min, and taking out and draining;
s4: putting the soaked nylon cloth in S3 into a baking oven, baking for 5S at 150 ℃, baking for 5S at 120 ℃, and finally baking for 5S at 115 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 3
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
50 parts of acrylic emulsion (Primal B-959);
5 parts of an aqueous cross-linking agent (AQUADERM XL-50);
3 parts of magnesium hydroxide;
Uniformly grinding the acrylic emulsion, the water-based crosslinking agent and the magnesium hydride in a grinder, then placing the ground magnesium hydride in a stirring tank, fully and uniformly stirring, and pouring the stirred mixture into a trough for standby;
s3: putting the nylon cloth of the S1 into a trough for soaking for 5min, and taking out and draining;
S4: putting the S3 soaked nylon cloth into a baking oven, baking for 2S at 130 ℃, then baking for 3S at 122 ℃, and finally baking for 5S at 110 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 4
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
55 parts of acrylic emulsion (Primal B-959);
8 parts of an aqueous cross-linking agent (AQUADERM XL-50);
12 parts of aluminum hydroxide;
Uniformly grinding the acrylic emulsion, the water-based crosslinking agent and the aluminum hydride in a grinder, then placing the ground product in a stirring tank, fully and uniformly stirring, and pouring the stirred product into a trough for standby;
s3: placing the nylon cloth of the S1 into a trough for soaking for 3min, and taking out and draining;
s4: putting the S3 soaked nylon cloth into a baking oven, baking for 5S at 135 ℃, then baking for 3S at 130 ℃, and finally baking for 3S at 120 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 5
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
55 parts of acrylic emulsion (Primal B-959);
8 parts of an aqueous cross-linking agent (AQUADERM XL-50);
12 parts of zinc oxide;
Uniformly grinding the acrylic emulsion, the water-based cross-linking agent and the zinc oxide in a grinder, then placing the ground zinc oxide in a stirring tank, fully and uniformly stirring, and pouring the stirred zinc oxide into a trough for standby;
s3: placing the nylon cloth of the S1 into a trough for soaking for 3min, and taking out and draining;
S4: putting the S3 soaked nylon cloth into a baking oven, baking for 2S at 135 ℃, then baking for 2S at 130 ℃, and finally baking for 2S at 120 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 6
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
Uniformly grinding the acrylic emulsion, the water-based cross-linking agent, aluminum hydroxide and magnesium hydroxide in a grinder, then placing in a stirring tank, fully and uniformly stirring, and pouring into a trough for standby;
s3: placing the nylon cloth of the S1 into a trough for soaking for 3min, and taking out and draining;
S4: putting the S3 soaked nylon cloth into a baking oven, baking for 3S at 135 ℃, baking for 3S at 130 ℃, and finally baking for 3S at 120 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
Example 7
The preparation method of the halogen-free flame retardant belt comprises the following specific steps:
S1: nylon yarn crisscross Cheng Nilong cloth with the diameter of 0.08mm is selected;
s2: preparing a flame retardant liquid:
55 parts of acrylic emulsion (Primal B-959);
8 parts of an aqueous cross-linking agent (AQUADERM XL-50);
12 parts of magnesium hydroxide;
3 parts of lipid microbubble component reagent;
Uniformly grinding the acrylic emulsion, the water-based cross-linking agent, the magnesium hydride and the lipid microbubbles in a grinder, then placing the ground materials in a stirring tank, fully and uniformly stirring, and pouring the materials into a trough for standby;
s3: placing the nylon cloth of the S1 into a trough for soaking for 3min, and taking out and draining;
S4: putting the S3 soaked nylon cloth into a baking oven, baking for 3S at 135 ℃, then baking for 2S at 130 ℃, and finally baking for 5S at 120 ℃;
s5: and (5) rolling and cutting into strips to obtain the halogen-free flame-retardant belt.
The lipid microvesicles are obtained by the following preparation method:
(1) According to the mass ratio of 1g:5g:1g of DPPC, DSPE-PEG5000 and DPPA are weighed and dissolved in 10ml of chloroform, and sealed ultrasonic oscillation is carried out for 1min to obtain phospholipid dispersion liquid;
(2) Evaporating phospholipid dispersion liquid at 50deg.C under reduced pressure under 0.1Mpa at 120r/min for 45min to form uniform milky thin film;
(3) Eluting with 5ml PBS, hydrating, and placing in a sealed bottle;
(4) CO 2 gas was introduced to displace the air in the bottle, followed by shaking for 1min. And centrifuged at 500rpm/min 2 times to obtain purified lipid microbubbles entrapping CO 2.
(5) The lipid microvesicles are diluted in water according to the proportion of 10 percent, and the lipid microvesicles are the lipid microvesicle component reagent.
Comparative example 1
The common nylon belt is selected from the commercial products.
Comparative example 2
This comparative example is different from example 1 in that nylon cloth is not immersed in the flame retardant liquid, and the nylon cloth used is the same as example 1.
Comparative example 3
This comparative example differs from example 1 in that the flame-retardant liquid used does not contain an acrylic emulsion, otherwise the same as in example 1.
The halogen-free flame retardant tapes prepared in the above examples 1 to 7, the common nylon tape of comparative example 1, the non-soaked nylon tape of comparative example 2 and the halogen-free flame retardant tape of comparative example 3 were subjected to flame retardant property tests and mechanical property tests, wherein the flame retardant property tests comprise the detection of various indexes such as oxygen index, heat resistance temperature and the like, and the experimental results show that the flame retardant properties of example 7 are the best, the flame retardant properties of comparative example 3 are the worst, and the common nylon tape of comparative example 1 and the non-soaked nylon tape of comparative example 2 have almost no flame retardance; the test results of the longitudinal tensile strength, the longitudinal elongation, the transverse tensile strength and the transverse elongation of the sample to be tested show that the halogen-free flame-retardant tapes prepared in examples 1 to 7 are excellent in performance and poor in performance in common nylon tapes in the test results of the mechanical properties such as the longitudinal tensile strength, the longitudinal elongation, the transverse tensile strength and the transverse elongation of the sample to be tested.
The experimental result shows that the flame retardant liquid can be well wrapped on the surface of the nylon belt, and has good flame retardant effect; the acrylic emulsion in the flame retardant liquid can improve the flame retardant effect of the flame retardant; the lipid microbubbles in the flame-retardant liquid can quickly limit combustion conditions by quickly releasing carbon dioxide, and have a better flame-retardant effect; the flame-retardant liquid also has a promoting effect on the mechanical properties of the nylon belt.
It should be understood that the foregoing examples of the present invention are merely illustrative of the present invention and are not intended to limit the present invention to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The halogen-free flame-retardant belt is characterized in that the flame-retardant belt is prepared by dipping and drying nylon cloth through flame-retardant liquid; the flame-retardant liquid comprises the following components in parts by weight: 55 parts of acrylic emulsion; 8 parts of water-based cross-linking agent; 12 parts of magnesium hydroxide; 3 parts of lipid microbubble component reagent;
the water-based cross-linking agent is AQUADERM XL-50;
the lipid microbubble component reagent is obtained by the following preparation method:
(1) Weighing DPPC, DSPE-PEG5000 and DPPA according to the mass ratio of 1g to 5g to 1g, dissolving in 10ml of chloroform, and sealing and carrying out ultrasonic oscillation for 1min to obtain phospholipid dispersion liquid;
(2) Evaporating phospholipid dispersion liquid at 50deg.C under reduced pressure under 0.1Mpa at 120r/min for 45min to form uniform milky thin film;
(3) Eluting with 5ml PBS, hydrating, and placing in a sealed bottle;
(4) Introducing CO2 gas to replace air in the bottle, oscillating for 1min, and centrifuging for 2 times at 500rpm/min to obtain purified lipid microbubbles containing CO 2;
(5) The lipid microvesicles are diluted in water according to the proportion of 10 percent, and the lipid microvesicles are the lipid microvesicle component reagent.
2. The halogen-free flame retardant belt according to claim 1, wherein the nylon cloth is formed by crisscross knitting of a plurality of nylon wires with diameters of 0.07-0.09 mm.
3. The halogen-free flame retardant tape according to claim 2, wherein the nylon cloth has a number ratio of warp nylon filaments to weft nylon filaments of 3:1 to 1:1.
4. A method for producing the halogen-free flame retardant tape according to any one of claims 1 to 3, wherein the step of producing the halogen-free flame retardant tape comprises the steps of:
S1, preparing a flame retardant liquid;
s2, soaking nylon cloth in the flame-retardant liquid;
s3, drying the soaked nylon cloth and airing;
and S4, rolling and cutting.
5. The method for preparing the halogen-free flame retardant tape according to claim 4, which comprises the following specific steps:
S1, grinding an acrylic emulsion, a water-based cross-linking agent, magnesium hydroxide and a lipid microbubble component reagent according to a proportion, and then placing the ground product into a stirring tank for fully stirring to obtain a flame-retardant liquid;
S2, pouring the flame-retardant liquid prepared in the step S1 into a trough, putting nylon cloth into the trough, soaking for 3-5 min, taking out and draining;
S3, baking the nylon cloth soaked in the S2 at 110-150 ℃ for 6-15S;
And S4, rolling and cutting the nylon cloth soaked with the flame-retardant liquid prepared in the step S3 into strips to obtain the halogen-free flame-retardant belt.
6. The method of producing a halogen-free flame retardant tape according to claim 4, wherein in step S3, the soaked nylon cloth is baked in three steps, the first step of baking temperature is 130 to 150 ℃, the second step of baking temperature is 120 to 130 ℃, the third step of baking temperature is 110 to 120 ℃, and the impregnated nylon cloth is baked in the first, second and third steps in this order.
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| CN101498100B (en) * | 2008-09-26 | 2011-05-18 | 浙江传化股份有限公司 | Expansion type flame-retardant coatings glue and use thereof in textile finishing |
| CN101891949B (en) * | 2010-08-09 | 2012-06-06 | 常州天晟新材料股份有限公司 | Halogen free flame retardant liquid and method for preparing flame retardant sponge using same |
| CN103498341B (en) * | 2013-09-27 | 2016-01-27 | 清远市普塞呋磷化学有限公司 | A kind of efficient low-smoke and flame retardant WP and preparation method thereof |
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| CN110564248A (en) * | 2019-09-24 | 2019-12-13 | 上海高分子功能材料研究所 | Water-based crosslinkable halogen-free high-flame-retardant coating for coating cable braided layer |
| CN111549541A (en) * | 2020-05-29 | 2020-08-18 | 江苏万邦特种纺织发展有限公司 | Preparation method of high-flame-retardant composite coating fabric |
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