CN107503122A - A kind of preparation method of electric wire fire proofing - Google Patents
A kind of preparation method of electric wire fire proofing Download PDFInfo
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- CN107503122A CN107503122A CN201710729089.9A CN201710729089A CN107503122A CN 107503122 A CN107503122 A CN 107503122A CN 201710729089 A CN201710729089 A CN 201710729089A CN 107503122 A CN107503122 A CN 107503122A
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- sodium
- electric wire
- dispersion liquid
- preparation
- based montmorillonite
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- 238000004079 fireproofing Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 60
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 60
- 239000011734 sodium Substances 0.000 claims abstract description 60
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 58
- 239000000243 solution Substances 0.000 claims abstract description 55
- MHUWZNTUIIFHAS-CLFAGFIQSA-N dioleoyl phosphatidic acid Chemical class CCCCCCCC\C=C/CCCCCCCC(=O)OCC(COP(O)(O)=O)OC(=O)CCCCCCC\C=C/CCCCCCCC MHUWZNTUIIFHAS-CLFAGFIQSA-N 0.000 claims abstract description 52
- 229920000642 polymer Polymers 0.000 claims abstract description 52
- 239000006185 dispersion Substances 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000004642 Polyimide Substances 0.000 claims abstract description 35
- 229920001721 polyimide Polymers 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229960004502 levodopa Drugs 0.000 claims abstract description 12
- WTDRDQBEARUVNC-LURJTMIESA-N L-DOPA Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-LURJTMIESA-N 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000000178 monomer Substances 0.000 claims abstract description 9
- HSDAJNMJOMSNEV-UHFFFAOYSA-N benzyl chloroformate Chemical compound ClC(=O)OCC1=CC=CC=C1 HSDAJNMJOMSNEV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012670 alkaline solution Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 238000001338 self-assembly Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- -1 benzyl ester Chemical class 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000003063 flame retardant Substances 0.000 description 10
- 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 description 9
- 238000013100 final test Methods 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 150000001638 boron Chemical class 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/308—Wires with resins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Insulated Conductors (AREA)
- Fireproofing Substances (AREA)
Abstract
The invention provides a kind of preparation method of electric wire fire proofing, including：Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer is made in aggregated reaction；The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution；Sodium-based montmorillonite is placed in ethanol solution sodium-based montmorillonite dispersion liquid is made, adjusted the pH value of the sodium-based montmorillonite dispersion liquid to 9.5~10 using alkaline solution；Described sodium-based montmorillonite dispersion liquid is handled into 7~9min using Ultrasonic cell smash；Polyimide fiber is soaked into 1.2~1.5h in aqueous hydrochloric acid solution, it is standby to extract moisture, and polyimide fiber base material is made；The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on to the surface of the polyimide fiber base material, often coats one time and is just dried, after drying, finally prepare electric wire fire proofing.The present invention takes into account fire resistance, mechanical performance and the feature of environmental protection.
Description
Technical field
The present invention relates to fire proofing technical field, more particularly to a kind of preparation method of electric wire fire proofing.
Background technology
Electric wire is product indispensable in power engineering, under the premise of the electrical ability of electric wire is ensured, also
Need electric wire has higher fire resistance, it is ensured that the electrical security of cable at work.
At present, flame-retardant electric wire and cable is typically to add fire retardant in sheath and insulating barrier to realize, such as halogenated flame retardant material
Material or boron series flame retardant material.
By adding halogenated flame retardant material or boron series flame retardant material, although electric wire can be improved to a certain extent
Fire resistance, but the mechanical performance of boron flame retardant is poor, and halogenated flame retardant has certain toxicity, it is in long-term use of process
In the noxious material that discharges health and environment can all be damaged, therefore existing electric wire fire proofing can not
Take into account fire resistance, mechanical performance and the feature of environmental protection.
The content of the invention
In view of above-mentioned condition, an aspect of of the present present invention provide a kind of preparation method of electric wire fire proofing, solve existing
There is the problem of fire proofing can not take into account fire resistance, mechanical performance and the feature of environmental protection.
A kind of preparation method of electric wire fire proofing, including：
1) preparation of modified DOPA polymer solution：
Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer is made in aggregated reaction；
The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution；
2) preparation of sodium-based montmorillonite dispersion liquid：
Sodium-based montmorillonite is placed in ethanol solution sodium-based montmorillonite dispersion liquid is made, using alkaline solution by the sodium base
The pH value of montmorillonite dispersions is adjusted to 9.5~10；
Described sodium-based montmorillonite dispersion liquid is handled into 7~9min using Ultrasonic cell smash, you can be made scattered
Uniform sodium-based montmorillonite dispersion liquid；
3) preparation of polyimide fiber base material：
Polyimide fiber is soaked into 1.2~1.5h in aqueous hydrochloric acid solution, it is standby to extract moisture, and it is fine that polyimides is made
Wiki material；
4) self assembly of composite：
The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimides
The surface of fiber base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 5~10 times, dry
After dry, electric wire fire proofing is finally prepared.
According to the preparation method of electric wire fire proofing provided by the invention, using polyimide fiber material as base material,
The surface of polyimide fiber base material is coated by self-assembling method using sodium-based montmorillonite and modified DOPA polymer,
One layer of fine and close overcoat is formed on the surface of polyimide fiber, the electric wire fire proofing finally prepared takes into account fire resisting resistance
Fire performance and mechanical performance, polyimide material sustainable use in the hot environment of fire after cladding, the material is used
The anti-flammability of electric wire can be lifted in electric wire, while can ensure that the mechanical performance of electric wire, further, since should
Material is not present halogen system etc. and pollutes the composition of environment, therefore also has the preferable feature of environmental protection.
In addition, according to the preparation method of the above-mentioned electric wire fire proofing of the present invention, can also have what is added as follows
Technical characteristic：
Further, described using the levodopa being modified by benzyl chloroformate as monomer, aggregated reaction, which is made, to be modified
In the step of DOPA polymer, molecular weight greatly 6000~6500g/mol of the obtained modified DOPA polymer.
Further, the described modified DOPA polymer is dissolved in acetone prepares modified DOPA polymer solution
The step of in, the concentration for the modified DOPA polymer solution prepared is respectively 0.02~0.10wt%.
It is further, described that sodium-based montmorillonite is placed in ethanol solution in the step of sodium-based montmorillonite dispersion liquid is made,
The concentration of the ethanol solution is 50%~55%V/V, the concentration of the manufactured sodium-based montmorillonite dispersion liquid for 0.22~
0.26wt%.
Further, it is described to repeat said process 5~10 times, after drying, finally prepare electric wire fire proofing
In step, drying temperature is 45~50 DEG C.
Further, it is described to be adjusted the pH value of the sodium-based montmorillonite dispersion liquid to 9.5~10 using alkaline solution
In step, the alkaline solution is NaOH solution.
Further, the concentration of the NaOH solution is 1~1.5M.
Further, in described the step of polyimide fiber is soaked in aqueous hydrochloric acid solution to 1.2~1.5h, the salt
The pH of aqueous acid is 2~2.5.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to embodiment.But this hair
It is bright to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, provide these embodiments
Purpose be to make to the disclosure more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Embodiments of the present invention provide a kind of preparation method of electric wire fire proofing, including：
1) preparation of modified DOPA polymer solution：
Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer is made in aggregated reaction；
The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution；
2) preparation of sodium-based montmorillonite dispersion liquid：
Sodium-based montmorillonite is placed in ethanol solution sodium-based montmorillonite dispersion liquid is made, using alkaline solution by the sodium base
The pH value of montmorillonite dispersions is adjusted to 9.5~10；
Described sodium-based montmorillonite dispersion liquid is handled into 7~9min using Ultrasonic cell smash, you can be made scattered
Uniform sodium-based montmorillonite dispersion liquid；
3) preparation of polyimide fiber base material：
Polyimide fiber is soaked into 1.2~1.5h in aqueous hydrochloric acid solution, it is standby to extract moisture, and it is fine that polyimides is made
Wiki material；
4) self assembly of composite：
The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimides
The surface of fiber base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 5~10 times, dry
After dry, electric wire fire proofing is finally prepared.
According to the preparation method of electric wire fire proofing provided by the invention, using polyimide fiber material as base material,
The surface of polyimide fiber base material is coated by self-assembling method using sodium-based montmorillonite and modified DOPA polymer,
One layer of fine and close overcoat is formed on the surface of polyimide fiber, the electric wire fire proofing finally prepared takes into account fire resisting resistance
Fire performance and mechanical performance, polyimide material sustainable use in the hot environment of fire after cladding, the material is used
The anti-flammability of electric wire can be lifted in electric wire, while can ensure that the mechanical performance of electric wire, further, since should
Material is not present halogen system etc. and pollutes the composition of environment, therefore also has the preferable feature of environmental protection.
Divide multiple embodiments that the embodiment of the present invention is further detailed below.The embodiment of the present invention be not limited to
Under specific embodiment.In the range of constant principal right, can be suitably carry out change implementation.
Embodiment one
A kind of preparation method of electric wire fire proofing, including：
1) preparation of modified DOPA polymer solution：
Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer, system is made in aggregated reaction
The molecular weight greatly 6000g/mol of the modified DOPA polymer obtained；
The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution, for preparing is described
The concentration of modified DOPA polymer solution is respectively 0.02wt%；
2) preparation of sodium-based montmorillonite dispersion liquid：
Sodium-based montmorillonite is placed in the ethanol solution that concentration is 50%V/V sodium-based montmorillonite dispersion liquid is made, it is manufactured
The concentration of the sodium-based montmorillonite dispersion liquid is 0.22wt%, and the NaOH solution that concentration is 1 divides the sodium-based montmorillonite
The pH value of dispersion liquid is adjusted to 9.5；
Described sodium-based montmorillonite dispersion liquid is handled into 7min using Ultrasonic cell smash, you can be made and be uniformly dispersed
Sodium-based montmorillonite dispersion liquid；
3) preparation of polyimide fiber base material：
Polyimide fiber is soaked 1.2 in the aqueous hydrochloric acid solution that pH is 2, it is standby to extract moisture, and polyimides is made
Fiber base material；
4) self assembly of composite：
The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimides
The surface of fiber base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 5 times, at 45 DEG C
Dried, finally prepare electric wire fire proofing.
Vertical combustion performance is carried out to electric wire fire proofing manufactured in the present embodiment according to standard GB/T5455-1997
Test, it is 7.7mm that final test, which goes out char length,.
In addition, it is fire-retardant to determine electric wire manufactured in the present embodiment using ASTM standard ASTMD 5035
The ultimate strength of material, the Cross breaking strength of final test is 597.4N, and longitudinal fracture strength is 389.5N.
Embodiment two
A kind of preparation method of electric wire fire proofing, including：
1) preparation of modified DOPA polymer solution：
Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer, system is made in aggregated reaction
The molecular weight greatly 6300g/mol of the modified DOPA polymer obtained；
The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution, for preparing is described
The concentration of modified DOPA polymer solution is respectively 0.06wt%；
2) preparation of sodium-based montmorillonite dispersion liquid：
Sodium-based montmorillonite is placed in the ethanol solution that concentration is 53%V/V sodium-based montmorillonite dispersion liquid is made, it is manufactured
The concentration of the sodium-based montmorillonite dispersion liquid is 0.24wt%, and the NaOH solution that concentration is 1.2M is by the sodium-based montmorillonite
The pH value of dispersion liquid is adjusted to 9.7；
Described sodium-based montmorillonite dispersion liquid is handled into 8min using Ultrasonic cell smash, you can be made and be uniformly dispersed
Sodium-based montmorillonite dispersion liquid；
3) preparation of polyimide fiber base material：
Polyimide fiber is soaked into 1.4h in the aqueous hydrochloric acid solution that pH is 2.5, it is standby to extract moisture, and it is sub- that polyamides is made
Amine fiber base material；
4) self assembly of composite：
The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimides
The surface of fiber base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 8 times, at 48 DEG C
Dried, finally prepare electric wire fire proofing.
Vertical combustion performance is carried out to electric wire fire proofing manufactured in the present embodiment according to standard GB/T5455-1997
Test, it is 7.8mm that final test, which goes out char length,.
In addition, it is fire-retardant to determine electric wire manufactured in the present embodiment using ASTM standard ASTMD 5035
The ultimate strength of material, the Cross breaking strength of final test is 587.2N, and longitudinal fracture strength is 378.1N.
Embodiment three
A kind of preparation method of electric wire fire proofing, including：
1) preparation of modified DOPA polymer solution：
Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer, system is made in aggregated reaction
The molecular weight greatly 6500g/mol of the modified DOPA polymer obtained；
The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution, for preparing is described
The concentration of modified DOPA polymer solution is respectively 0.10wt%；
2) preparation of sodium-based montmorillonite dispersion liquid：
Sodium-based montmorillonite is placed in the ethanol solution that concentration is 55%V/V sodium-based montmorillonite dispersion liquid is made, it is manufactured
The concentration of the sodium-based montmorillonite dispersion liquid is 0.26wt%, and the NaOH solution that concentration is 1.5M is by the sodium-based montmorillonite
The pH value of dispersion liquid is adjusted to 10；
Described sodium-based montmorillonite dispersion liquid is handled into 9min using Ultrasonic cell smash, you can be made and be uniformly dispersed
Sodium-based montmorillonite dispersion liquid；
3) preparation of polyimide fiber base material：
Polyimide fiber is soaked into 1.5h in the aqueous hydrochloric acid solution that pH is 2.5, it is standby to extract moisture, and it is sub- that polyamides is made
Amine fiber base material；
4) self assembly of composite：
The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimides
The surface of fiber base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 10 times, 50
DEG C dried, finally prepare electric wire fire proofing.
Vertical combustion performance is carried out to electric wire fire proofing manufactured in the present embodiment according to standard GB/T5455-1997
Test, it is 7.4mm that final test, which goes out char length,.
In addition, it is fire-retardant to determine electric wire manufactured in the present embodiment using ASTM standard ASTMD 5035
The ultimate strength of material, the Cross breaking strength of final test is 567.1N, and longitudinal fracture strength is 368.5N.
Finally, boron series flame retardant material of the prior art and halogen system fire proofing are surveyed using identical method of testing
Examination, and test result contrast as follows：
Upper table compared for using above three embodiment and boron series flame retardant material of the prior art and halogen system fire proofing
Test structure, it is apparent that the electric wire resistance finally prepared using the method for three embodiments of the invention from table
The fire resistance and mechanical performance of combustible material are respectively provided with advantage, further, since the material be not present halogen system etc. pollute environment into
Point, therefore also there is the preferable feature of environmental protection, accomplish taking into account for fire resistance, mechanical performance and the feature of environmental protection.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
- A kind of 1. preparation method of electric wire fire proofing, it is characterised in that including：1) preparation of modified DOPA polymer solution：Using the levodopa being modified by benzyl chloroformate as monomer, modified DOPA polymer is made in aggregated reaction；The modified DOPA polymer is dissolved in acetone and prepares modified DOPA polymer solution；2) preparation of sodium-based montmorillonite dispersion liquid：Sodium-based montmorillonite is placed in ethanol solution sodium-based montmorillonite dispersion liquid is made, using alkaline solution by the sodium Ji Mengtuo The pH value of native dispersion liquid is adjusted to 9.5~10；Described sodium-based montmorillonite dispersion liquid is handled into 7~9min using Ultrasonic cell smash, you can be made and be uniformly dispersed Sodium-based montmorillonite dispersion liquid；3) preparation of polyimide fiber base material：Polyimide fiber is soaked into 1.2~1.5h in aqueous hydrochloric acid solution, it is standby to extract moisture, and polyimide fiber base is made Material；4) self assembly of composite：The sodium-based montmorillonite dispersion liquid and the modified DOPA polymer solution are alternately coated on the polyimide fiber The surface of base material, often coat one time and be just dried, then carry out next cycle coating, repeat said process 5~10 times, drying Afterwards, electric wire fire proofing is finally prepared.
- 2. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that described with by chloromethane In the step of levodopa that acid benzyl ester is modified be monomer, and modified DOPA polymer is made in aggregated reaction, it is obtained described in change Molecular weight greatly 6000~6500g/mol of property DOPA polymer.
- 3. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that described by the modification DOPA polymer is dissolved in acetone in the step of preparing modified DOPA polymer solution, and the modified DOPA prepared gathers The concentration of polymer solution is respectively 0.02~0.10wt%.
- 4. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that described by sodium Ji Mengtuo Soil is placed in ethanol solution in the step of sodium-based montmorillonite dispersion liquid is made, and the concentration of the ethanol solution is 50%~55%V/ V, the concentration of the manufactured sodium-based montmorillonite dispersion liquid is 0.22~0.26wt%.
- 5. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that the above-mentioned mistake of repetition Journey 5~10 times, after drying, in the step of finally preparing electric wire fire proofing, drying temperature is 45~50 DEG C.
- 6. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that described molten using alkalescence Liquid adjusts the pH value of the sodium-based montmorillonite dispersion liquid into the step of 9.5~10, and the alkaline solution is NaOH solution.
- 7. the preparation method of electric wire fire proofing according to claim 6, it is characterised in that the NaOH solution Concentration is 1~1.5M.
- 8. the preparation method of electric wire fire proofing according to claim 1, it is characterised in that described by polyimides Fiber was soaked in aqueous hydrochloric acid solution in the step of 1.2~1.5h, and the pH of the aqueous hydrochloric acid solution is 2~2.5.
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