CN116285132A - Preparation method and application of high-temperature-resistant fireproof cable material - Google Patents
Preparation method and application of high-temperature-resistant fireproof cable material Download PDFInfo
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- CN116285132A CN116285132A CN202310199066.7A CN202310199066A CN116285132A CN 116285132 A CN116285132 A CN 116285132A CN 202310199066 A CN202310199066 A CN 202310199066A CN 116285132 A CN116285132 A CN 116285132A
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- 239000000463 material Substances 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229910017082 Fe-Si Inorganic materials 0.000 claims abstract description 34
- 229910017133 Fe—Si Inorganic materials 0.000 claims abstract description 34
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 24
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 24
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 23
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 23
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 23
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004945 silicone rubber Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims description 36
- 239000000203 mixture Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 16
- 230000003712 anti-aging effect Effects 0.000 claims description 15
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000004014 plasticizer Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 14
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000002244 precipitate Substances 0.000 claims description 11
- 239000012266 salt solution Substances 0.000 claims description 11
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 229920005862 polyol Polymers 0.000 claims description 9
- 150000003077 polyols Chemical class 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- WEUCVIBPSSMHJG-UHFFFAOYSA-N calcium titanate Chemical compound [O-2].[O-2].[O-2].[Ca+2].[Ti+4] WEUCVIBPSSMHJG-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 6
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000005049 silicon tetrachloride Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 2
- 230000002431 foraging effect Effects 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 19
- 239000004033 plastic Substances 0.000 abstract description 19
- 239000000945 filler Substances 0.000 abstract description 3
- 238000009830 intercalation Methods 0.000 abstract description 3
- 230000002687 intercalation Effects 0.000 abstract description 3
- 239000003063 flame retardant Substances 0.000 description 27
- 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 25
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 12
- -1 polyethylene Polymers 0.000 description 9
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000001993 wax Substances 0.000 description 7
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 235000019359 magnesium stearate Nutrition 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 5
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- 238000011161 development Methods 0.000 description 4
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- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
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- 239000002114 nanocomposite Substances 0.000 description 3
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910017827 Cu—Fe Inorganic materials 0.000 description 2
- 238000002679 ablation Methods 0.000 description 2
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- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229920013701 VORANOL™ Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- DYDNPESBYVVLBO-UHFFFAOYSA-N formanilide Chemical compound O=CNC1=CC=CC=C1 DYDNPESBYVVLBO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- OOYGSFOGFJDDHP-KMCOLRRFSA-N kanamycin A sulfate Chemical group OS(O)(=O)=O.O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N OOYGSFOGFJDDHP-KMCOLRRFSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- XMGMFRIEKMMMSU-UHFFFAOYSA-N phenylmethylbenzene Chemical compound C=1C=CC=CC=1[C]C1=CC=CC=C1 XMGMFRIEKMMMSU-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- BNEMLSQAJOPTGK-UHFFFAOYSA-N zinc;dioxido(oxo)tin Chemical compound [Zn+2].[O-][Sn]([O-])=O BNEMLSQAJOPTGK-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L2023/40—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with compounds changing molecular weight
- C08L2023/44—Coupling; Molecular weight increase
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to the technical field of cable materials, in particular to a preparation method and application of a high-temperature-resistant fireproof cable material. The cable material with excellent mechanical properties and good fireproof performance is prepared by taking crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber as base materials of plastics and taking diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide as an intercalation filler. It is calcined at 950 deg.c for 180min to form stable insulating net without large holes.
Description
Technical Field
The invention relates to the technical field of cable materials, in particular to a preparation method and application of a high-temperature-resistant fireproof cable material.
Background
The fireproof cable material is a wire cable material with fireproof performance, can inhibit the expansion of fire when a fire disaster occurs, and ensures the safety of personnel and the operation of equipment. It is mainly divided into mineral insulating material and polymer flame-retardant material. The mineral insulating material is a cable insulating material which uses natural minerals or artificially synthesized mineral materials and has good fireproof performance. The polymer flame-retardant material is prepared by adding a flame retardant into a polymer material, so that the polymer material has certain fireproof performance.
The fireproof cable material has good flame retardant property and heat resistance, and can maintain certain electric property and mechanical strength under the conditions of high temperature and fire. Meanwhile, the fireproof cable material also has good weather resistance and chemical resistance.
The preparation method of the fireproof cable material mainly comprises a mixing method, a blending method, a coating method and the like. Wherein, the mixing method is to mix mineral filler or flame retardant with polymer matrix to prepare material; the blending method is to prepare the mineral filler or the flame retardant and the polymer matrix into a material together; the coating method is to coat the flame-retardant coating on the surface of the cable to form a protective layer.
The fireproof cable material is widely applied to the fields of construction, subway, ship, petrochemical industry and the like. In the building field, the fireproof cable material can ensure the safe operation of the power system in the building under the condition of fire; in the subway field, the fireproof cable material can prevent fire in a subway tunnel from spreading; in the field of ships, the fireproof cable material can ensure the normal operation of a ship power system under the condition of fire; in the petrochemical field, the fireproof cable material can ensure the normal operation of chemical equipment under the condition of fire and ensure the safety of workers and equipment.
With the continuous development of society and the importance of people on life safety and property safety, the fireproof cable material has wide application prospect. In the future, the development trend of fireproof cable materials mainly comprises the following aspects:
(1) The material performance such as fireproof performance, mechanical strength, weather resistance, chemical resistance and the like is continuously improved;
(2) Continuous innovations in manufacturing techniques, such as new mixing, blending, and coating techniques;
(3) The sustainability and the environmental protection of the material are improved, such as recyclable materials, green flame retardants and the like;
(4) The development of multifunctionality and intellectualization, such as developing the fireproof cable material capable of sensing fire, realizes the application of fireproof and monitoring, alarming, controlling and other multifunctional integration.
In short, the fireproof cable material is an important wire and cable material and plays an irreplaceable role in ensuring personnel safety and normal operation of equipment. Along with continuous innovation of technology and continuous expansion of application fields, the fireproof cable material has wider application prospect.
The traditional fireproof cable material mainly adopts mineral insulating materials and polymer flame retardant materials, but the materials may have the problems of high cost, difficult processing, environmental protection and the like. Therefore, new fireproof cable materials, such as silicon nitride nano composite materials, carbon nano tube composite materials, thermal expansion materials and the like, have good fireproof performance and engineering performance in recent years, and are expected to become an important development direction of the fireproof cable materials.
One novel flame retardant technology is the use of nanocomposites. These materials consist of flame retardants and base materials (e.g., polyvinyl chloride, polyethylene, etc.) and nanomaterials (e.g., yttria, ceria, etc.). In the preparation process of the nanocomposite, the flame retardant can be dispersed in the base material, and the addition of the nanomaterial can enhance the flame retardant property and mechanical property of the material. However, the method has the defects of easy agglomeration of nano particles, complex preparation process, high production difficulty and the like.
Another novel flame retardant technology is the use of inorganic layered materials. Inorganic layered materials are composed of a plurality of layered structural units which can be interlaced and fixed to each other by physical and chemical interactions. The fireproof cable material prepared by combining the inorganic layered materials with the base materials can effectively improve the flame retardant property and the mechanical property. However, the alloy has the problems of high brittleness, easiness in cracking, difficult processing and relatively high cost.
CN 114213773A is a green flame-retardant high-temperature-resistant oil-resistant special flexible cable material and a production method thereof, and comprises the following raw materials: crosslinked polyethylene, polydimethyl vinyl siloxane, polyurethane resin, aniline formaldehyde resin, nano calcium carbonate, zinc stannate, kaolin, flame retardant, vulcanizing agent, lubricant, anti-aging agent, plasticizer and stabilizer. The improvement of the flame retardant property and the mechanical property is not obvious.
Therefore, new high-temperature-resistant fireproof cable materials are required to be developed to further improve the high-temperature-resistant flame-retardant performance and the mechanical performance.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a high-temperature-resistant fireproof cable material which comprises the following components in parts by mass: 40-60 parts of crosslinked polyethylene, 4-6 parts of vinyl trimethoxy silane, 40-60 parts of silicone rubber, 5-15 parts of diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide, 5-6 parts of low-melting glass powder, 3-5 parts of vulcanizing agent, 1-3 parts of lubricant, 2-3 parts of anti-aging agent, 2-6 parts of plasticizer and 3-5 parts of ultraviolet absorber.
Preferably, the vulcanizing agent is formed by mixing one or more of dicumyl peroxide, carbon disulfide, thiophenol and diphenyl carbon disulfide.
Preferably, the lubricant is formed by mixing one or more of stearic acid, magnesium stearate, polyethylene wax and paraffin wax.
Preferably, the anti-aging agent is formed by mixing one or more of calcium titanate, a styrene-butadiene copolymer and polyether polyol; further preferably, the anti-aging agent is prepared from calcium titanate and polyether polyol according to the mass ratio of (3-4): 1, and mixing.
Preferably, the plasticizer is any one of polycarbonates, polyvinyl alcohols, polyacrylates, and phosphates.
Preferably, the ultraviolet absorber is formed by mixing one or more of UV-326, UV-327, UV-328, UV-329 and UV-531.
The preparation method of the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, adding 3-4 parts of copper nitrate and 4-6 parts of ferric nitrate into 30-40 parts of water according to parts by mass, and stirring for 5-10min at 100-200r/min to obtain a metal salt solution;
s2, adding 0.6-1 part of silicon tetrachloride into 30-40 parts of water according to parts by mass, and stirring for 5-10min at 100-200r/min to obtain a silicic acid solution;
s3, mixing the metal salt solution prepared in the step S1 and the silicic acid solution prepared in the step S2 according to parts by weight, stirring for 5-10min at 100-200r/min, then adding 1-2 parts of dilute hydrochloric acid and 0.5-1 part of urea into the mixture, continuously stirring for 1-2h, then adjusting the pH of the solution to 10-11 by using sodium hydroxide aqueous solution, standing and aging for 6-8h at 70-90 ℃, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double metal hydroxide;
s4, adding the Cu-Fe-Si layered double hydroxide prepared in the step S3 into 50-60 parts of absolute ethyl alcohol according to parts by mass, stirring for 10-20h at 100-200r/min in a nitrogen atmosphere, centrifuging for 6-10min at a rotating speed of 3000-6000r/min, and taking a supernatant to obtain a colloid solution;
and S5, adding 0.5-2 parts of diphenyl dimethoxy silane into the colloid solution prepared in the step S4 according to the mass parts, then reacting for 8-12 hours at the temperature of 90-110 ℃, cooling to room temperature, centrifuging for 6-10 minutes at the rotating speed of 10000-12000r/min, centrifuging to obtain precipitate, washing and drying to obtain the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide.
The concentration of the dilute hydrochloric acid in the step S3 is 8-12wt%.
The concentration of the sodium hydroxide aqueous solution in the step S3 is 6-10wt%.
The invention also provides a preparation method of the high-temperature-resistant fireproof cable material.
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 40-60 parts of crosslinked polyethylene, 4-6 parts of vinyl trimethoxy silane, 40-60 parts of silicon rubber, 5-15 parts of diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide, 5-6 parts of low melting point glass powder, 3-5 parts of vulcanizing agent, 1-3 parts of lubricant, 2-3 parts of antioxidant, 2-6 parts of plasticizer and 3-5 parts of ultraviolet absorber according to mass parts, and stirring for 30-60min at 100-200r/min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 150-170 ℃ for 30-40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120-125 ℃, the temperature of the second area is 130-135 ℃, the temperature of the third area is 140-145 ℃, the temperature of the fourth area is 150-155 ℃, the residence time is 1-2min, and the pressure is 10-15Mpa.
The high-temperature-resistant and fireproof performances of cable materials are always the key points of research, and the traditional fireproof cable materials mainly adopt mineral insulating materials and polymer flame-retardant materials, but the materials may have the problems of high cost, difficult processing, environmental protection and the like. The novel flame retardant has the problems of uneven dispersion, poor plastic compatibility, poor mechanical properties and the like. In order to further improve the flame retardant property of the cable material and keep the good mechanical property of the cable material, the invention provides the high-temperature-resistant fireproof cable material.
According to the invention, the base material of the plastic is crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber, and under the action of high temperature, the vinyl trimethoxy silane can be subjected to crosslinking reaction with the crosslinked polyethylene and the silicone rubber to form Si-O bonds, and the Si-O bonds have higher bond energy, so that the generated plastic has higher thermal stability. In addition, as the silicone rubber is easy to age under heating, the hardness and tensile property of the plastic are reduced, and the addition of the crosslinked polyethylene can obviously improve the phenomenon, so that the obtained plastic has better mechanical property.
Furthermore, the Cu-Fe-Si layered double metal hydroxide is prepared by adopting a co-aging mode of copper nitrate, ferric nitrate and silicic acid, and Si atoms are inserted into a Cu-Fe layer, so that the surface of the obtained double metal hydroxide contains a large number of Si-OH groups, and the surface of the obtained double metal hydroxide can be subjected to thermal decomposition reaction at high temperature to absorb a large amount of heat, and simultaneously is subjected to polycondensation with crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber to form more stable connection, thereby effectively preventing further ablation of a base material. The flame-retardant plastic composite material not only has the flame-retardant effect of the traditional layered double hydroxide, but also effectively forms a stable insulating reticular structure, and effectively prevents further combustion of plastics.
Furthermore, in order to improve the dispersibility of the Cu-Fe-Si layered double metal hydroxide and the compatibility of the Cu-Fe-Si layered double metal hydroxide with plastic, the invention further adopts diphenyl dimethoxy silane to carry out intercalation, so that the sheet layer is thinner, the dispersibility is better, the diphenyl dimethoxy silane can also be polycondensed with Si-OH groups, crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber on the layer to form more stable connection, and a stable insulating net is still formed after calcination for 180min at 950 ℃, so that large holes cannot appear. Thereby obtaining the cable material with excellent mechanical property and good fireproof performance.
The invention has the beneficial effects that
The cable material with excellent mechanical properties and good fireproof performance is prepared by taking crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber as base materials of plastics and taking diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide as an intercalation filler. It is calcined at 950 deg.c for 180min to form stable insulating net without large holes.
Detailed Description
Crosslinked polyethylene, cat No.: MG70, shanghai, new materials inc.
Vinyl trimethoxysilane, CAS:2768-02-7.
Silicone rubber, CAS:68083-18-1, cat: 8598479, wuhan Kano technology Co., ltd.
Diphenyl dimethoxy silane, CAS:6843-66-9.
Dicumyl peroxide, CAS:80-43-3.
Polyethylene wax, cat No.: 0987, wuhan's biosciences limited.
Polyether polyol, model: VORANOL 4000LM, a Chinese Co., ltd.
Tricresyl phosphate, CAS:84-69-5.
Low melting point glass powder, product number: JH-05, jiheng county, ming He mineral processing plant.
Example 1
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 50 parts of crosslinked polyethylene, 5 parts of vinyl trimethoxy silane, 50 parts of silicone rubber, 4 parts of vulcanizing agent, 2 parts of lubricant, 2 parts of anti-aging agent, 4 parts of plasticizer and 4 parts of ultraviolet absorber according to parts by mass, and stirring for 40min at 200r/min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 160 ℃ for 40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120 ℃, the temperature of the second area is 130 ℃, the temperature of the third area is 140 ℃, the temperature of the fourth area is 150 ℃, the residence time is 2min, and the pressure is 15Mpa.
The vulcanizing agent is dicumyl peroxide.
The lubricant is formed by mixing magnesium stearate and polyethylene wax according to the mass ratio of 1:2.
The anti-aging agent is prepared from calcium titanate and polyether polyol according to a mass ratio of 3:1, and mixing.
The plasticizer is tricresyl phosphate.
The ultraviolet absorber is UV-326.
Example 2
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 50 parts of crosslinked polyethylene, 5 parts of vinyl trimethoxy silane, 50 parts of silicon rubber, 6 parts of low-melting-point glass powder, 4 parts of vulcanizing agent, 2 parts of lubricant, 2 parts of anti-aging agent, 4 parts of plasticizer and 4 parts of ultraviolet absorbent according to parts by mass, and stirring for 40min at 200r/min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 160 ℃ for 40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120 ℃, the temperature of the second area is 130 ℃, the temperature of the third area is 140 ℃, the temperature of the fourth area is 150 ℃, the residence time is 2min, and the pressure is 15Mpa.
The vulcanizing agent is dicumyl peroxide.
The lubricant is formed by mixing magnesium stearate and polyethylene wax according to the mass ratio of 1:2.
The anti-aging agent is prepared from calcium titanate and polyether polyol according to a mass ratio of 3:1, and mixing.
The plasticizer is tricresyl phosphate.
The ultraviolet absorber is UV-326.
Example 3
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 50 parts of crosslinked polyethylene, 5 parts of vinyl trimethoxy silane, 50 parts of silicon rubber, 10 parts of Cu-Fe-Si layered double metal hydroxide, 6 parts of low-melting glass powder, 4 parts of vulcanizing agent, 2 parts of lubricant, 2 parts of anti-aging agent, 4 parts of plasticizer and 4 parts of ultraviolet absorbent according to mass parts, and stirring at 200r/min for 40min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 160 ℃ for 40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120 ℃, the temperature of the second area is 130 ℃, the temperature of the third area is 140 ℃, the temperature of the fourth area is 150 ℃, the residence time is 2min, and the pressure is 15Mpa.
The vulcanizing agent is dicumyl peroxide.
The lubricant is formed by mixing magnesium stearate and polyethylene wax according to the mass ratio of 1:2.
The anti-aging agent is prepared from calcium titanate and polyether polyol according to a mass ratio of 3:1, and mixing.
The plasticizer is tricresyl phosphate.
The ultraviolet absorber is UV-326.
The preparation method of the Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, adding 3.4 parts of copper nitrate and 4.8 parts of ferric nitrate into 40 parts of water according to parts by mass, and stirring for 10min at 200r/min to obtain a metal salt solution;
s2, adding 0.8 part of silicon tetrachloride into 40 parts of water according to parts by weight, and stirring for 10min at 200r/min to obtain a silicic acid solution;
and S3, mixing the metal salt solution prepared in the step S1 and the silicic acid solution prepared in the step S2 according to parts by mass, stirring for 10min at 200r/min, then adding 1.6 parts of dilute hydrochloric acid and 0.8 part of urea into the mixture, continuously stirring for 2h, adjusting the pH of the solution to 10.5 by using a sodium hydroxide aqueous solution, standing and aging for 8h at 80 ℃, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double metal hydroxide.
The concentration of the dilute hydrochloric acid in the step S3 is 10wt%.
The concentration of the aqueous sodium hydroxide solution in the step S3 is 8wt%.
Example 4
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 50 parts of crosslinked polyethylene, 5 parts of vinyl trimethoxy silane, 50 parts of silicon rubber, 10 parts of diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide, 6 parts of low-melting glass powder, 4 parts of vulcanizing agent, 2 parts of lubricant, 2 parts of anti-aging agent, 4 parts of plasticizer and 4 parts of ultraviolet absorber according to mass parts, and stirring for 40min at 200r/min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 160 ℃ for 40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120 ℃, the temperature of the second area is 130 ℃, the temperature of the third area is 140 ℃, the temperature of the fourth area is 150 ℃, the residence time is 2min, and the pressure is 15Mpa.
The vulcanizing agent is dicumyl peroxide.
The lubricant is formed by mixing magnesium stearate and polyethylene wax according to the mass ratio of 1:2.
The anti-aging agent is prepared from calcium titanate and polyether polyol according to a mass ratio of 3:1, and mixing.
The plasticizer is tricresyl phosphate.
The ultraviolet absorber is UV-326.
The preparation method of the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, adding 3.4 parts of copper nitrate and 4.8 parts of ferric nitrate into 40 parts of water according to parts by mass, and stirring for 10min at 200r/min to obtain a metal salt solution;
s2, adding 0.8 part of silicon tetrachloride into 40 parts of water according to parts by weight, and stirring for 10min at 200r/min to obtain a silicic acid solution;
s3, mixing the metal salt solution prepared in the step S1 and the silicic acid solution prepared in the step S2 according to parts by mass, stirring for 10min at 200r/min, then adding 1.6 parts of dilute hydrochloric acid and 0.8 part of urea into the mixture, continuously stirring for 2h, adjusting the pH of the solution to 10.5 by using sodium hydroxide aqueous solution, standing and aging for 8h at 80 ℃, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double metal hydroxide;
s4, adding the Cu-Fe-Si layered double hydroxide prepared in the step S3 into 60 parts of absolute ethyl alcohol according to parts by weight, stirring for 16h at 200r/min in a nitrogen atmosphere, centrifuging for 10min at 4000r/min, and taking a supernatant to obtain a colloid solution;
and S5, adding 1.8 parts of diphenyl dimethoxy silane into the colloidal solution prepared in the step S4 according to the mass parts, reacting for 12 hours at 100 ℃, cooling to room temperature, centrifuging at 12000r/min for 10min, centrifuging to obtain precipitate, washing and drying to obtain the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide.
The concentration of the dilute hydrochloric acid in the step S3 is 10wt%.
The concentration of the aqueous sodium hydroxide solution in the step S3 is 8wt%.
Example 5
A preparation method of a high-temperature-resistant fireproof cable material comprises the following steps:
s1, mixing 50 parts of crosslinked polyethylene, 5 parts of vinyl trimethoxy silane, 50 parts of silicon rubber, 10 parts of diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide, 4 parts of vulcanizing agent, 2 parts of lubricant, 2 parts of antioxidant, 4 parts of plasticizer and 4 parts of ultraviolet absorbent according to parts by mass, and stirring at 200r/min for 40min to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying at 160 ℃ for 40min to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
The heating temperature of the screw extruder is as follows: the temperature of the first area is 120 ℃, the temperature of the second area is 130 ℃, the temperature of the third area is 140 ℃, the temperature of the fourth area is 150 ℃, the residence time is 2min, and the pressure is 15Mpa.
The vulcanizing agent is dicumyl peroxide.
The lubricant is formed by mixing magnesium stearate and polyethylene wax according to the mass ratio of 1:2.
The anti-aging agent is prepared from calcium titanate and polyether polyol according to a mass ratio of 3:1, and mixing.
The plasticizer is tricresyl phosphate.
The ultraviolet absorber is UV-326.
The preparation method of the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, adding 3.4 parts of copper nitrate and 4.8 parts of ferric nitrate into 40 parts of water according to parts by mass, and stirring for 10min at 200r/min to obtain a metal salt solution;
s2, adding 0.8 part of silicon tetrachloride into 40 parts of water according to parts by weight, and stirring for 10min at 200r/min to obtain a silicic acid solution;
s3, mixing the metal salt solution prepared in the step S1 and the silicic acid solution prepared in the step S2 according to parts by mass, stirring for 10min at 200r/min, then adding 1.6 parts of dilute hydrochloric acid and 0.8 part of urea into the mixture, continuously stirring for 2h, adjusting the pH of the solution to 10.5 by using sodium hydroxide aqueous solution, standing and aging for 8h at 80 ℃, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double metal hydroxide;
s4, adding the Cu-Fe-Si layered double hydroxide prepared in the step S3 into 60 parts of absolute ethyl alcohol according to parts by weight, stirring for 16h at 200r/min in a nitrogen atmosphere, centrifuging for 10min at 4000r/min, and taking a supernatant to obtain a colloid solution;
and S5, adding 1.8 parts of diphenyl dimethoxy silane into the colloidal solution prepared in the step S4 according to the mass parts, reacting for 12 hours at 100 ℃, cooling to room temperature, centrifuging at 12000r/min for 10min, centrifuging to obtain precipitate, washing and drying to obtain the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide.
The concentration of the dilute hydrochloric acid in the step S3 is 10wt%.
The concentration of the aqueous sodium hydroxide solution in the step S3 is 8wt%.
Test example 1
10mg of the high-temperature-resistant fireproof cable material prepared in each embodiment of the invention is respectively taken for thermal weight test, specifically, nitrogen with the flow of 30mL/min is used for purging, the temperature is raised from 30 ℃ to 950 ℃ at the speed of 20 ℃/min, then calcination is carried out for 180min, and the initial temperature and the final residual rate of each sample weight loss are recorded. The results are shown in Table 1.
Table 1: thermogravimetric test analysis results
| Initial temperature of weight loss/. Degree.C | Final residual rate/% | |
| Example 1 | 542.2 | 50.6 |
| Example 2 | 589.1 | 54.2 |
| Example 3 | 674.4 | 58.4 |
| Example 4 | 716.7 | 60.1 |
| Example 5 | 682.7 | 58.9 |
Test example 2
Determination of tensile Properties of plastics section 2, see GB/T1040.2-2006: test conditions for molding and extruding Plastic the tensile properties of the thermoplastic polyester elastomer compositions prepared in the examples were measured by a universal tensile tester at a tensile rate of 50mm/min at 25℃for more than 5 times per sample, and the prepared samples were allowed to stand at 25℃for more than 48 hours at room temperature prior to the test. The results are shown in Table 2.
Table 2: tensile Properties
| Tensile Strength/MPa | |
| Example 1 | 1.87 |
| Example 2 | 1.35 |
| Example 3 | 3.96 |
| Example 4 | 5.01 |
| Example 5 | 2.74 |
In the embodiment 1 of the invention, the base materials of the plastic are crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber, and the vinyl trimethoxy silane can be subjected to crosslinking reaction with the crosslinked polyethylene and the silicone rubber under the action of high temperature to form Si-O bonds, and the Si-O bonds have higher bond energy, so that the generated plastic has higher thermal stability. In addition, as the silicone rubber is easy to age under heating, the hardness and tensile property of the plastic are reduced, and the addition of the crosslinked polyethylene can obviously improve the phenomenon, so that the obtained plastic has better mechanical property.
Furthermore, in the embodiment 2 of the present invention, the low melting point glass frit is added on the basis of the embodiment 1, and it is found that after the low melting point glass frit is added, the initial temperature of weightlessness in the thermal weight test is increased, the final residual rate is increased, and the tensile strength of the glass frit is slightly reduced, which is thought to be due to the fact that the glass frit can form a connection with vinyl trimethoxysilane and silicone rubber after being melted, and is filled into an insulating network formed by crosslinked polyethylene, vinyl trimethoxysilane and silicone rubber, the flame retardance of the glass frit is enhanced to a certain extent, and the compatibility of the glass frit and plastic is poor, so that the mechanical property of the glass frit is reduced.
Example 3 a Cu-Fe-Si layered double hydroxide was further added as a flame retardant filler on the basis of example 2. The method adopts a co-aging mode of copper nitrate, ferric nitrate and silicic acid, and Si atoms are inserted into a Cu-Fe layer, so that the surface of the obtained double metal hydroxide contains a large number of Si-OH groups, the double metal hydroxide can generate thermal decomposition reaction at high temperature, absorb a large amount of heat, and simultaneously polycondense with crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber to form more stable connection, thereby effectively preventing the further ablation of a base material. The flame-retardant plastic composite material not only has the flame-retardant effect of the traditional layered double hydroxide, but also effectively forms a stable insulating reticular structure, and effectively prevents further combustion of plastics.
Still further, example 4 uses diphenyl dimethoxy silane to intercalate on the basis of example 3, so that the sheet layer is thinner, the dispersibility is better, diphenyl dimethoxy silane can also be polycondensed with Si-OH groups, crosslinked polyethylene, vinyl trimethoxy silane and silicone rubber on the layer to form more stable connection, thus stable insulating net is still formed after calcination for 180min at 950 ℃, and large holes cannot appear. Thereby obtaining the cable material with excellent mechanical property and good fireproof performance.
Claims (10)
1. The preparation method of the high-temperature-resistant fireproof cable material is characterized by comprising the following steps of:
s1, mixing and stirring crosslinked polyethylene, vinyl trimethoxy silane, silicone rubber, diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide, low melting point glass powder, vulcanizing agent, lubricant, anti-aging agent, plasticizer and ultraviolet absorbent to obtain a mixture A;
s2, placing the mixture A into an internal mixer for banburying to obtain a mixture B;
and S3, adding the mixture B into a double-screw extruder for extrusion, and then carrying out bracing, air cooling, granulating and drying to obtain the cable material.
2. The method for preparing a high temperature resistant and fireproof cable material according to claim 1, wherein the heating temperature of the screw extruder is: the temperature of the first area is 120-125 ℃, the temperature of the second area is 130-135 ℃, the temperature of the third area is 140-145 ℃, the temperature of the fourth area is 150-155 ℃, the residence time is 1-2min, and the pressure is 10-15Mpa.
3. The method for preparing a high temperature resistant and fireproof cable material according to claim 1, wherein the anti-aging agent is formed by mixing one or more of calcium titanate, a styrene-butadiene copolymer and polyether polyol.
4. The method for preparing a high temperature resistant and fire resistant cable material according to claim 1, wherein the ultraviolet absorber is formed by mixing one or more of UV-326, UV-327, UV-328, UV-329 and UV-531.
5. The method for preparing the high-temperature-resistant fireproof cable material according to claim 1, wherein the method for preparing the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, mixing and stirring a metal salt solution and a silicic acid solution, then adding dilute hydrochloric acid and urea into the mixture, continuing stirring, then adjusting the pH value of the solution by using a sodium hydroxide aqueous solution, standing for aging, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double hydroxide;
s2, adding the Cu-Fe-Si layered double hydroxide prepared in the step S1 into absolute ethyl alcohol, stirring, centrifuging, and taking supernatant to obtain a colloidal solution;
and S3, adding diphenyl dimethoxy silane into the colloidal solution prepared in the step S3 for reaction, centrifuging, taking precipitate, washing and drying to obtain the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide.
6. The method for preparing the high-temperature-resistant fireproof cable material according to claim 5, wherein the method for preparing the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double hydroxide comprises the following steps:
s1, adding 3-4 parts of copper nitrate and 4-6 parts of ferric nitrate into 30-40 parts of water according to parts by mass, and stirring for 5-10min at 100-200r/min to obtain a metal salt solution;
s2, adding 0.6-1 part of silicon tetrachloride into 30-40 parts of water according to parts by mass, and stirring for 5-10min at 100-200r/min to obtain a silicic acid solution;
s3, mixing the metal salt solution prepared in the step S1 and the silicic acid solution prepared in the step S2 according to parts by weight, stirring for 5-10min at 100-200r/min, then adding 1-2 parts of dilute hydrochloric acid and 0.5-1 part of urea into the mixture, continuously stirring for 1-2h, then adjusting the pH of the solution to 10-11 by using sodium hydroxide aqueous solution, standing and aging for 6-8h at 70-90 ℃, centrifuging to obtain precipitate, washing and drying to obtain the Cu-Fe-Si layered double metal hydroxide;
s4, adding the Cu-Fe-Si layered double hydroxide prepared in the step S3 into 50-60 parts of absolute ethyl alcohol according to parts by mass, stirring for 10-20h at 100-200r/min in a nitrogen atmosphere, centrifuging for 6-10min at a rotating speed of 3000-6000r/min, and taking a supernatant to obtain a colloid solution;
and S5, adding 0.5-2 parts of diphenyl dimethoxy silane into the colloid solution prepared in the step S4 according to the mass parts, then reacting for 8-12 hours at the temperature of 90-110 ℃, cooling to room temperature, centrifuging for 6-10 minutes at the rotating speed of 10000-12000r/min, centrifuging to obtain precipitate, washing and drying to obtain the diphenyl dimethoxy silane intercalated Cu-Fe-Si layered double metal hydroxide.
7. The method for preparing a high temperature resistant and fireproof cable material according to claim 6, wherein the concentration of the dilute hydrochloric acid in the step S3 is 8-12wt%.
8. The method for preparing a high temperature resistant and fireproof cable material according to claim 6, wherein the concentration of the sodium hydroxide aqueous solution in the step S3 is 6-10wt%.
9. A high temperature resistant and fireproof cable material, characterized in that the material is prepared by the preparation method of the high temperature resistant and fireproof cable material according to any one of claims 1 to 8.
10. Use of the high temperature resistant fire resistant cable material according to claim 9 in the technical field of cable materials.
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