CN117936177B - Mineral cable and preparation method thereof - Google Patents
Mineral cable and preparation method thereof Download PDFInfo
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- CN117936177B CN117936177B CN202410332702.3A CN202410332702A CN117936177B CN 117936177 B CN117936177 B CN 117936177B CN 202410332702 A CN202410332702 A CN 202410332702A CN 117936177 B CN117936177 B CN 117936177B
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- polyolefin
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- ceramic
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 89
- 239000011707 mineral Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims description 5
- 239000000919 ceramic Substances 0.000 claims abstract description 84
- 229920000098 polyolefin Polymers 0.000 claims abstract description 81
- 239000002131 composite material Substances 0.000 claims abstract description 76
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 59
- 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 claims abstract description 50
- 239000003063 flame retardant Substances 0.000 claims abstract description 49
- 229910052802 copper Inorganic materials 0.000 claims abstract description 45
- 239000010949 copper Substances 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000009413 insulation Methods 0.000 claims abstract description 37
- 238000002955 isolation Methods 0.000 claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 239000010445 mica Substances 0.000 claims abstract description 19
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 19
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 114
- 235000010755 mineral Nutrition 0.000 claims description 84
- 238000003756 stirring Methods 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 50
- 238000002156 mixing Methods 0.000 claims description 47
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 45
- 239000008367 deionised water Substances 0.000 claims description 45
- 229910021641 deionized water Inorganic materials 0.000 claims description 45
- 238000005406 washing Methods 0.000 claims description 45
- HVBSAKJJOYLTQU-UHFFFAOYSA-N 4-aminobenzenesulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-N 0.000 claims description 42
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 34
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 claims description 32
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 30
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 30
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 claims description 30
- 239000000314 lubricant Substances 0.000 claims description 23
- 239000003963 antioxidant agent Substances 0.000 claims description 22
- 230000003078 antioxidant effect Effects 0.000 claims description 22
- 239000006084 composite stabilizer Substances 0.000 claims description 22
- 229950000244 sulfanilic acid Drugs 0.000 claims description 21
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims description 20
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 20
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 20
- 229920005672 polyolefin resin Polymers 0.000 claims description 18
- 238000001291 vacuum drying Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- XNDZQQSKSQTQQD-UHFFFAOYSA-N 3-methylcyclohex-2-en-1-ol Chemical compound CC1=CC(O)CCC1 XNDZQQSKSQTQQD-UHFFFAOYSA-N 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- DWSWCPPGLRSPIT-UHFFFAOYSA-N benzo[c][2,1]benzoxaphosphinin-6-ium 6-oxide Chemical compound C1=CC=C2[P+](=O)OC3=CC=CC=C3C2=C1 DWSWCPPGLRSPIT-UHFFFAOYSA-N 0.000 claims description 12
- 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 description 12
- 238000000034 method Methods 0.000 claims description 12
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 12
- 238000002390 rotary evaporation Methods 0.000 claims description 12
- GZFGOTFRPZRKDS-UHFFFAOYSA-N 4-bromophenol Chemical compound OC1=CC=C(Br)C=C1 GZFGOTFRPZRKDS-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- NHDIQVFFNDKAQU-UHFFFAOYSA-N tripropan-2-yl borate Chemical compound CC(C)OB(OC(C)C)OC(C)C NHDIQVFFNDKAQU-UHFFFAOYSA-N 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- UIQORMPFIFWPOG-UHFFFAOYSA-N aluminum;magnesium;pentanitrate Chemical compound [Mg+2].[Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O UIQORMPFIFWPOG-UHFFFAOYSA-N 0.000 claims description 10
- IZALUMVGBVKPJD-UHFFFAOYSA-N benzene-1,3-dicarbaldehyde Chemical compound O=CC1=CC=CC(C=O)=C1 IZALUMVGBVKPJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 8
- 238000010025 steaming Methods 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000005491 wire drawing Methods 0.000 claims description 7
- 239000005457 ice water Substances 0.000 claims description 5
- 239000003208 petroleum Substances 0.000 claims description 5
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 5
- GDQXQVWVCVMMIE-UHFFFAOYSA-N dinitrooxyalumanyl nitrate hexahydrate Chemical compound O.O.O.O.O.O.[Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GDQXQVWVCVMMIE-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 239000003381 stabilizer Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical group OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 8
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 150000001543 aryl boronic acids Chemical group 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XGCTUKUCGUNZDN-UHFFFAOYSA-N [B].O=O Chemical compound [B].O=O XGCTUKUCGUNZDN-UHFFFAOYSA-N 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- -1 aryl boric acid Chemical compound 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000004799 bromophenyl group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical group O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- ZWLUXSQADUDCSB-UHFFFAOYSA-N phthalaldehyde Chemical compound O=CC1=CC=CC=C1C=O ZWLUXSQADUDCSB-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/55—Boron-containing compounds
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a mineral cable, which comprises a plurality of monofilament conductors, wherein a mica insulation tape is wrapped around the monofilament conductors to obtain wire cores, the wire cores are wrapped around the mica insulation tape to obtain cable cores, ceramic composite tape isolation layers are arranged outside the cable cores, glass fiber ropes are filled between the wire cores and the ceramic composite tape isolation layers, an extruded mineral insulation layer is arranged outside the ceramic composite tape isolation layers, a copper strip interlocking armor layer is arranged outside the extruded mineral insulation layer, and an outer sheath layer is arranged outside the copper strip interlocking armor layer; the flame retardant in the ceramic polyolefin of the extruded mineral insulating layer material is modified, phenylboronic acid groups and nitrogen and phosphorus elements are introduced, so that the ceramic polyolefin can play a role in compounding flame retardant porcelain with zinc borate, a better flame retardant porcelain effect is achieved, and the stabilizer with good stability and flame retardant ultraviolet absorption effect is obtained by modifying the stabilizer in the polyolefin of the outer sheath material, so that the outer sheath has good flame retardant and weather resistance.
Description
Technical Field
The invention relates to the field of mineral cables, in particular to a mineral cable and a preparation method thereof.
Background
In the market of China, the mineral insulated cables are various in types and quantity, and can be mainly divided into rigid mineral cables and flexible mineral cables, wherein the flexible mineral cables are gradually used in the market due to the problems of complex manufacturing process and high laying difficulty of the rigid mineral cables, the flexible mineral cables which are common in the market at present are mainly mica tape mineral insulated corrugated copper sheath cables, the flexible mineral cables are mainly different from the rigid mineral cables in that stranded copper wires are used as conductors, mica tapes are used as insulating materials, external copper sleeves are of corrugated copper pipe types, mineral insulating materials are used between the mica tapes and the corrugated copper pipes for filling, and the exterior of the corrugated copper pipes are protected by halogen-free low-smoke plastic materials;
At present, common mineral insulating materials such as ceramic polyolefin can be rapidly ceramic at high temperature to form a ceramic body, the ceramic body has good self-supporting capacity, can play a role in protecting normal operation of wires and cables and preventing secondary fire accidents, but as the melting point of the ceramic filler is generally about 1000 ℃ or more, the condition that the combustion temperature is lower than the melting point of the ceramic filler can exist, so that the filler cannot perform eutectic reaction with decomposition residues of the composite material, and further the effect of effectively protecting the cables cannot be achieved; polyolefin is a common cable outer sheath base material, the property of the polyolefin cannot meet the halogen-free low-smoke plastic material requirement of the mineral cable outer sheath, and in the long-term use process, the outer sheath material is extremely easy to age due to ultraviolet irradiation, so that the protection of an armor layer is influenced when the cable outer sheath is in fire;
The invention improves the ceramic forming temperature of the ceramic polyolefin and ensures that the ceramic polyolefin has high-efficiency flame retardant property through synthesizing the composite flame retardant, and the modified polyolefin has better weather resistance and better flame retardant property through modifying the auxiliary agent in the polyolefin.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a mineral cable and a preparation method thereof.
The aim of the invention can be achieved by the following technical scheme:
a mineral cable is characterized in that a plurality of monofilament conductors are stranded and then wrapped with a mica insulation tape to obtain a wire core, the wire cores are stranded to obtain a cable core, a ceramic composite tape isolation layer is arranged outside the cable core, glass fiber ropes are filled between the wire cores and the ceramic composite tape isolation layer, an extruded mineral insulation layer is arranged outside the ceramic composite tape isolation layer, a copper strip interlocking armor layer is arranged outside the extruded mineral insulation layer, and an outer sheath layer is arranged outside the copper strip interlocking armor layer;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
S2: twisting a plurality of monofilament conductors in a compacting twisting mode, and wrapping a mica insulation tape outside the monofilament conductors, wherein the thickness of the mica insulation tape is 0.2-0.4mm, so as to obtain a wire core;
S3: twisting a plurality of wire cores, wrapping the wire cores by using a ceramic composite tape, wherein the thickness of the ceramic composite tape is 0.8-1.2mm, and the wire cores and the isolation layers of the ceramic composite tape are filled by glass fiber ropes to obtain a cable core;
s4: extruding ceramic polyolefin outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling the extruded mineral insulating layer by using a water tank, drying by using a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinal argon arc welding corrugated copper pipe, extruding modified polyolefin outside the copper strip linkage armor layer by using an extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 0.8-1.2mm, cooling by using the water tank, and drying by using the dryer to obtain a mineral cable;
the ceramic polyolefin comprises the following raw materials in parts by weight: 30-40 parts of polyolefin resin, 20-30 parts of montmorillonite, 10-20 parts of composite flame retardant, 3-5 parts of zinc borate, 1-2 parts of lubricant and 1-2 parts of antioxidant;
The ceramic polyolefin is prepared by the following steps: adding polyolefin resin, montmorillonite, a composite flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130-150 ℃ and the screw rotating speed is 200-300rpm to obtain ceramic polyolefin;
the composite flame retardant is prepared by the following steps:
A1: adding isophthalaldehyde and DOPO into toluene, reacting for 4 hours under the conditions of stirring speed of 100-200rpm and 125 ℃, cooling, filtering, washing with toluene for three times, and vacuum drying at 75 ℃ for 12 hours to obtain an intermediate 1, wherein the dosage ratio of isophthalaldehyde to DOPO to toluene is 0.1mol:0.2mol:400-500mL;
in the reaction process, aldehyde groups in the intermediate phthalaldehyde react with hypophosphite structures in DOPO to obtain an intermediate 1;
A2: adding the intermediate 1 and triethylamine into acetone, stirring and mixing, adding cyanuric chloride, reacting for 12 hours at the stirring speed of 200-300rpm and room temperature, performing rotary evaporation, washing with sodium hydroxide solution three times, washing with deionized water three times, and performing vacuum drying at 50 ℃ for 12 hours to obtain an intermediate 2, wherein the mass fraction of the sodium hydroxide solution is 20%, and the dosage ratio of the intermediate 1, cyanuric chloride, triethylamine and acetone is 0.1mol:0.2mol:0.001mol:200-300mL;
Hydroxyl in the intermediate 1 reacts with cyanuric chloride in the reaction process to obtain an intermediate 2;
A3: under the protection of nitrogen, mixing 4-bromophenol, sodium hydroxide and anhydrous tetrahydrofuran, then adding the intermediate 2, reacting for 18 hours at the stirring speed of 100-200rpm and 60 ℃, cooling, rotary evaporation and filtration, and separating and purifying by a silica gel column to obtain the intermediate 3, wherein the volume ratio of dichloromethane to petroleum ether in the silica gel column is 1:3, 4-bromophenol, intermediate 2, sodium hydroxide and anhydrous tetrahydrofuran in a ratio of 0.4 to 0.5mol:0.1mol:0.05mol:150-200ml;
In the reaction process, the cyanuric chloride in the intermediate 2 reacts with 4-bromophenol to obtain an intermediate 3;
a4: under the protection of nitrogen, mixing the intermediate 3 with anhydrous tetrahydrofuran, stirring for 30-60min at the stirring speed of 50-100rpm and at the temperature of minus 78 ℃, slowly dripping n-butyllithium, continuously stirring for 2-3h after dripping, slowly dripping triisopropyl borate, continuously stirring for 2-3h after dripping, reacting for 10-12h at the stirring speed of 50-100rpm and at the room temperature, rotary steaming and filtering, washing with deionized water for three times, washing with dichloromethane for three times, and vacuum drying at the temperature of 50 ℃ for 12h to obtain the composite flame retardant, wherein the dosage ratio of the intermediate 3, triisopropyl borate, n-butyllithium and anhydrous tetrahydrofuran is 0.1mol:0.6 to 0.8mol:0.4mol:150-200mL;
In the reaction process, bromophenyl in the intermediate 3 reacts with triisopropyl borate to obtain a composite flame retardant containing aryl boric acid;
the modified polyolefin comprises the following raw materials in parts by weight: 30-40 parts of polyolefin, 8-12 parts of composite stabilizer, 3-5 parts of antioxidant and 1-2 parts of lubricant;
the modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130-150 ℃ and the screw rotating speed is 200-300rpm to obtain modified polyolefin;
the composite stabilizer is prepared by the following steps:
B1: adding cyanuric chloride into acetone under the condition of ice-water bath, stirring and mixing to obtain a cyanuric chloride system, adding sulfanilic acid into deionized water, stirring and mixing to obtain a sulfanilic acid system, slowly dropwise adding the sulfanilic acid system into the cyanuric chloride system, reacting for 2-3 hours under the condition of stirring speed of 50-100rpm and 0-5 ℃, dropwise adding sodium bicarbonate solution in the reaction process to control pH to be 5-6, and obtaining a system containing an intermediate a, wherein the molar concentration of the sodium bicarbonate solution is 1mol/L, and the dosage ratio of the cyanuric chloride to the sulfanilic acid to the acetone to the deionized water is 0.5mol:0.5mol:80-100mL:60-80mL;
B2: adding 2- (2-hydroxy-5-benzyl) benzotriazole into a system containing the intermediate a under the protection of nitrogen, reacting for 4-6 hours at the stirring speed of 300-400rpm and the temperature of 60 ℃, cooling, steaming in a rotary manner, washing with absolute ethanol for 3 times, and drying in vacuum at the temperature of 90 ℃ for 12 hours to obtain an intermediate b, wherein the dosage ratio of the 2- (2-hydroxy-5-benzyl) benzotriazole to the intermediate a is 1mol:0.5mol;
B3: adding sodium hydroxide and an intermediate b into deionized water under the protection of nitrogen, stirring and mixing to obtain a sodium hydroxide intermediate b system, adding magnesium nitrate hexahydrate and aluminum nitrate nonahydrate into deionized water, stirring and mixing to obtain a magnesium aluminum nitrate system, dropwise adding the magnesium aluminum nitrate system into the sodium hydroxide intermediate b system, reacting for 12 hours under the conditions of stirring speed of 400-500rpm and 80 ℃, cooling, centrifuging and filtering, washing with deionized water for 3 times, washing with ethanol for 3 times, washing with acetone for 1 time, and vacuum freeze-drying for 12 hours to obtain a compound stabilizer, wherein the deionized water, magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and deionized water for magnesium nitrate hexahydrate and aluminum nitrate nonahydrate for the sodium hydroxide, the intermediate b and the intermediate b are 3.2mol:0.8mol:500mL:0.6mol:0.2mol:500mL;
in the reaction process, inserting the intermediate b between the magnesium-aluminum layered double hydroxide layers by a coprecipitation method to obtain a composite stabilizer;
The invention has the beneficial effects that: the mineral cable is prepared by modifying polyolefin used for a mineral insulating layer and an outer sheath layer of the mineral cable to obtain ceramic polyolefin and modified polyolefin; the ceramic polyolefin contains a composite flame retardant and zinc borate, wherein the zinc borate and thermal decomposition residues of the composite flame retardant are bridged during fire disaster so as to promote the ceramic process, the composite flame retardant also contains a plurality of arylboronic acid groups which are dehydrated and crosslinked under the heating condition to form a boron-oxygen hexacyclic crosslinked reticular structure, the temperature is further increased, the composite flame retardant is continuously decomposed to finally form a boron-oxygen-containing glass layer with strong heat resistance and oxidation resistance, the composite flame retardant covers the surface of a substrate, has very excellent protective effect on the internal substrate, can effectively cut off the oxygen supply of the internal substrate, prevents the escape of combustible gas and volatile matters and the transmission of combustion heat, plays a good condensed phase flame retardant smoke inhibiting effect, and simultaneously contains a nitrogen-phosphorus intumescent flame retardant system which interacts at a high temperature to form an intumescent carbon layer, has a good oxygen isolation and heat insulation effect, and the existence of nitrogen-phosphorus element enables the DOPO groups and melamine groups contained in the composite flame retardant to form flame retardance with arylboronic acid groups and zinc borate to better cooperate with the arylboronic acid groups, and the flame retardant groups and the arylboronic acid groups better form a more complete flame retardant effect, and the condensed flame retardant system is better than the arylboronic acid groups and has a better flame retardant effect; the modified polyolefin is used as a cable outer sheath material, the cable outer sheath material is provided with a good flame retardant effect by adding the composite stabilizer, the composite stabilizer is obtained by inserting an intermediate b into a magnesium aluminum layered double hydroxide layer, the dispersion property of the magnesium aluminum layered double hydroxide in the polyolefin is improved by inserting the intermediate b, the composite stabilizer can be uniformly dispersed in the polyolefin, meanwhile, the magnesium aluminum layered double hydroxide has a good flame retardant effect, the composite stabilizer can play a synergistic flame retardant effect with a nitrogen group in the intermediate b, so that the outer sheath has a good flame retardant and heat insulation capability, meanwhile, the intermediate b contains 2- (2-hydroxy-5-benzyl) benzotriazole, has a good ultraviolet absorption capability, can play a synergistic effect with the magnesium aluminum layered double hydroxide, can remarkably improve the light stability performance of the polyolefin, improve the weather resistance performance of the polyolefin, and the sulfanilic acid introduced in the intermediate b is used as an amphoteric compound, so that the intermediate b can be better combined with the magnesium aluminum layered double hydroxide, thereby improving the heat stability performance of the composite stabilizer and playing a better role in the polyolefin.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a mineral cable according to the present invention.
In fig. 1, the list of components represented by the reference numerals is as follows:
1. an outer sheath layer; 2. copper strip interlocking armor layer; 3. extruding a mineral insulating layer; 4. ceramic composite tape isolation layer; 5. glass fiber ropes; 6. mica insulation tape; 7. a monofilament conductor.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The ceramic polyolefin comprises the following raw materials in parts by weight: 30 parts of commercial AV161 polyolefin resin, 20 parts of montmorillonite, 10 parts of composite flame retardant, 3 parts of zinc borate, 1 part of commercial PMX-200 lubricant and 1 part of commercial 1010 antioxidant;
the ceramic polyolefin is prepared by the following steps: adding polyolefin resin, montmorillonite, a composite flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130 ℃ and the screw rotating speed is 200rpm to obtain ceramic polyolefin;
the composite flame retardant is prepared by the following steps:
A1: adding isophthalaldehyde and DOPO into toluene, reacting for 4 hours at the stirring speed of 100rpm and the temperature of 125 ℃, cooling, filtering, washing the toluene for three times, and vacuum drying at the temperature of 75 ℃ for 12 hours to obtain an intermediate 1, wherein the dosage ratio of isophthalaldehyde to DOPO to toluene is 0.1mol:0.2mol:400mL;
A2: adding the intermediate 1 and triethylamine into acetone, stirring and mixing, adding cyanuric chloride, reacting for 12 hours at the stirring speed of 200rpm and room temperature, performing rotary evaporation, washing with sodium hydroxide solution three times, washing with deionized water three times, and vacuum drying at 50 ℃ for 12 hours to obtain an intermediate 2, wherein the mass fraction of the sodium hydroxide solution is 20%, and the dosage ratio of the intermediate 1, cyanuric chloride, triethylamine and acetone is 0.1mol:0.2mol:0.001mol:200mL;
a3: under the protection of nitrogen, mixing 4-bromophenol, sodium hydroxide and anhydrous tetrahydrofuran, then adding an intermediate 2, reacting for 18 hours at the stirring speed of 100rpm and 60 ℃, cooling, performing rotary evaporation and filtration, and separating and purifying by a silica gel column to obtain an intermediate 3, wherein the volume ratio of dichloromethane to petroleum ether in the silica gel column is 1: the dosage ratio of 3, 4-bromophenol, intermediate 2, sodium hydroxide and anhydrous tetrahydrofuran is 0.4mol:0.1mol:0.05mol:150-200ml;
a4: under the protection of nitrogen, mixing the intermediate 3 with anhydrous tetrahydrofuran, stirring for 60min at the stirring speed of 50rpm and the temperature of minus 78 ℃, slowly dripping n-butyllithium, continuously stirring for 2h after dripping, slowly dripping triisopropyl borate, continuously stirring for 2h after dripping, reacting for 10h at the stirring speed of 50rpm and the room temperature, rotary steaming, filtering, washing with deionized water for three times, washing with dichloromethane for three times, and vacuum drying at the temperature of 50 ℃ for 12h to obtain the composite flame retardant, wherein the dosage ratio of the intermediate 3, triisopropyl borate, n-butyllithium and anhydrous tetrahydrofuran is 0.1mol:0.6mol:0.4mol:150mL;
example 2
The ceramic polyolefin comprises the following raw materials in parts by weight: 30 parts of commercial AV161 polyolefin resin, 20 parts of montmorillonite, 10 parts of composite flame retardant, 3 parts of zinc borate, 1 part of commercial PMX-200 lubricant and 1 part of commercial 1010 phenolic antioxidant;
The ceramic polyolefin is prepared by the following steps: adding polyolefin resin, montmorillonite, a composite flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 150 ℃ and the screw rotating speed is 300rpm to obtain ceramic polyolefin;
the composite flame retardant is prepared by the following steps:
a1: adding isophthalaldehyde and DOPO into toluene, reacting for 4 hours at the stirring speed of 100rpm and the temperature of 125 ℃, cooling, filtering, washing the toluene for three times, and vacuum drying at the temperature of 75 ℃ for 12 hours to obtain an intermediate 1, wherein the dosage ratio of isophthalaldehyde to DOPO to toluene is 0.1mol:0.2mol:500mL;
A2: adding the intermediate 1 and triethylamine into acetone, stirring and mixing, adding cyanuric chloride, reacting for 12 hours at the stirring speed of 300rpm and room temperature, performing rotary evaporation, washing with sodium hydroxide solution three times, washing with deionized water three times, and vacuum drying at 50 ℃ for 12 hours to obtain an intermediate 2, wherein the mass fraction of the sodium hydroxide solution is 20%, and the dosage ratio of the intermediate 1, cyanuric chloride, triethylamine and acetone is 0.1mol:0.2mol:0.001mol:300mL;
A3: under the protection of nitrogen, mixing 4-bromophenol, sodium hydroxide and anhydrous tetrahydrofuran, then adding an intermediate 2, reacting for 18 hours at the stirring speed of 100rpm and 60 ℃, cooling, performing rotary evaporation and filtration, and separating and purifying by a silica gel column to obtain an intermediate 3, wherein the volume ratio of dichloromethane to petroleum ether in the silica gel column is 1: the dosage ratio of 3, 4-bromophenol, intermediate 2, sodium hydroxide and anhydrous tetrahydrofuran is 0.5mol:0.1mol:0.05mol:200ml;
A4: under the protection of nitrogen, mixing the intermediate 3 with anhydrous tetrahydrofuran, stirring for 60min at the stirring speed of 100rpm and the temperature of minus 78 ℃, slowly dropwise adding n-butyllithium, continuously stirring for 2h after the dropwise adding is finished, slowly dropwise adding triisopropyl borate, continuously stirring for 2h after the dropwise adding is finished, reacting for 10h at the stirring speed of 50rpm and the room temperature, rotary steaming, filtering, washing with deionized water for three times, washing with dichloromethane for three times, and vacuum drying at the temperature of 50 ℃ for 12h to obtain the composite flame retardant, wherein the dosage ratio of the intermediate 3, triisopropyl borate, n-butyllithium and anhydrous tetrahydrofuran is 0.1mol:00.8mol:0.4mol:200mL;
Example 3
The ceramic polyolefin comprises the following raw materials in parts by weight: 40 parts of commercial AV161 polyolefin resin, 30 parts of montmorillonite, 20 parts of composite flame retardant, 5 parts of zinc borate, 2 parts of commercial PMX-200 lubricant and 2 parts of commercial 1010 phenolic antioxidant;
The ceramic polyolefin is prepared by the following steps: adding polyolefin resin, montmorillonite, a composite flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 150 ℃ and the screw rotating speed is 300rpm to obtain ceramic polyolefin;
the composite flame retardant is prepared by the following steps:
a1: adding isophthalaldehyde and DOPO into toluene, reacting for 4 hours at the stirring speed of 200rpm and 125 ℃, cooling, filtering, washing the toluene for three times, and vacuum drying at 75 ℃ for 12 hours to obtain an intermediate 1, wherein the dosage ratio of isophthalaldehyde, DOPO and toluene is 0.1mol:0.2mol:500mL;
A2: adding the intermediate 1 and triethylamine into acetone, stirring and mixing, adding cyanuric chloride, reacting for 12 hours at the stirring speed of 300rpm and room temperature, performing rotary evaporation, washing with sodium hydroxide solution three times, washing with deionized water three times, and vacuum drying at 50 ℃ for 12 hours to obtain an intermediate 2, wherein the mass fraction of the sodium hydroxide solution is 20%, and the dosage ratio of the intermediate 1, cyanuric chloride, triethylamine and acetone is 0.1mol:0.2mol:0.001mol:300mL;
A3: under the protection of nitrogen, mixing 4-bromophenol, sodium hydroxide and anhydrous tetrahydrofuran, then adding an intermediate 2, reacting for 18 hours at the stirring speed of 200rpm and 60 ℃, cooling, performing rotary evaporation and filtration, and separating and purifying by a silica gel column to obtain an intermediate 3, wherein the volume ratio of dichloromethane to petroleum ether in the silica gel column is 1: the dosage ratio of 3, 4-bromophenol, intermediate 2, sodium hydroxide and anhydrous tetrahydrofuran is 0.5mol:0.1mol:0.05mol:200ml;
a4: under the protection of nitrogen, mixing the intermediate 3 with anhydrous tetrahydrofuran, stirring for 30min at the stirring speed of 50rpm and the temperature of minus 78 ℃, slowly dripping n-butyllithium, continuously stirring for 3h after dripping, slowly dripping triisopropyl borate, continuously stirring for 3h after dripping, reacting for 12h at the stirring speed of 100rpm and the room temperature, rotary steaming, filtering, washing with deionized water for three times, washing with dichloromethane for three times, and vacuum drying at the temperature of 50 ℃ for 12h to obtain the composite flame retardant, wherein the dosage ratio of the intermediate 3, triisopropyl borate, n-butyllithium and anhydrous tetrahydrofuran is 0.1mol:0.8mol:0.4mol:200mL;
Example 4
The modified polyolefin comprises the following raw materials in parts by weight: 30 parts of a commercial AV161 polyolefin, 8 parts of a compound stabilizer, 3 parts of a commercial 1010 antioxidant and 1 part of a commercial PMX-200 lubricant;
The modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130 ℃ and the screw rotating speed is 200rpm to obtain modified polyolefin;
the composite stabilizer is prepared by the following steps:
B1: adding cyanuric chloride into acetone under the condition of ice-water bath, stirring and mixing to obtain a cyanuric chloride system, adding sulfanilic acid into deionized water, stirring and mixing to obtain a sulfanilic acid system, slowly dropwise adding the sulfanilic acid system into the cyanuric chloride system, reacting for 2 hours under the condition of 50rpm and 0 ℃, dropwise adding sodium bicarbonate solution in the reaction process to control pH to be 5-6, and obtaining a system containing an intermediate a, wherein the molar concentration of the sodium bicarbonate solution is 1mol/L, and the dosage ratio of cyanuric chloride, sulfanilic acid, acetone and deionized water is 0.5mol:0.5mol:80mL:60mL;
B2: adding 2- (2-hydroxy-5-benzyl) benzotriazole into a system containing the intermediate a under the protection of nitrogen, reacting for 4 hours at the stirring speed of 300rpm and 60 ℃, cooling, performing rotary evaporation, washing with absolute ethanol for 3 times, and performing vacuum drying at 90 ℃ for 12 hours to obtain an intermediate b, wherein the dosage ratio of the 2- (2-hydroxy-5-benzyl) benzotriazole to the intermediate a is 1mol:0.5mol;
B3: adding sodium hydroxide and an intermediate b into deionized water under the protection of nitrogen, stirring and mixing to obtain a sodium hydroxide intermediate b system, adding magnesium nitrate hexahydrate and aluminum nitrate nonahydrate into deionized water, stirring and mixing to obtain a magnesium aluminum nitrate system, dropwise adding the magnesium aluminum nitrate system into the sodium hydroxide intermediate b system, reacting for 12 hours under the condition of stirring speed of 400rpm and 80 ℃, cooling, centrifuging and filtering, washing deionized water for 3 times, washing with ethanol for 3 times, washing with acetone for 1 time, and vacuum freeze-drying for 12 hours to obtain a compound stabilizer, wherein the deionized water, magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and deionized water for magnesium nitrate hexahydrate and aluminum nitrate nonahydrate are 3.2mol:0.8mol:500mL:0.6mol:0.2mol:500mL;
Example 5
The modified polyolefin comprises the following raw materials in parts by weight: 40 parts of commercial AV161 polyolefin, 12 parts of a compound stabilizer, 5 parts of commercial 1010 antioxidant and 2 parts of commercial PMX-200 slip agent;
The modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130 ℃ and the screw rotating speed is 200rpm to obtain modified polyolefin;
the composite stabilizer is prepared by the following steps:
B1: adding cyanuric chloride into acetone under the condition of ice-water bath, stirring and mixing to obtain a cyanuric chloride system, adding sulfanilic acid into deionized water, stirring and mixing to obtain a sulfanilic acid system, slowly dropwise adding the sulfanilic acid system into the cyanuric chloride system, reacting for 3 hours under the condition of stirring speed of 100rpm and 5 ℃, dropwise adding sodium bicarbonate solution in the reaction process to control pH to be 5-6, and obtaining a system containing an intermediate a, wherein the molar concentration of the sodium bicarbonate solution is 1mol/L, and the dosage ratio of cyanuric chloride, sulfanilic acid, acetone and deionized water is 0.5mol:0.5mol:100mL:80mL;
B2: adding 2- (2-hydroxy-5-benzyl) benzotriazole into a system containing the intermediate a under the protection of nitrogen, reacting for 6 hours at the stirring speed of 400rpm and 60 ℃, cooling, performing rotary evaporation, washing with absolute ethanol for 3 times, and performing vacuum drying at 90 ℃ for 12 hours to obtain an intermediate b, wherein the dosage ratio of the 2- (2-hydroxy-5-benzyl) benzotriazole to the intermediate a is 1mol:0.5mol;
B3: adding sodium hydroxide and an intermediate b into deionized water under the protection of nitrogen, stirring and mixing to obtain a sodium hydroxide intermediate b system, adding magnesium nitrate hexahydrate and aluminum nitrate nonahydrate into deionized water, stirring and mixing to obtain a magnesium aluminum nitrate system, dropwise adding the magnesium aluminum nitrate system into the sodium hydroxide intermediate b system, reacting for 12 hours under the condition of stirring speed of 500rpm and 80 ℃, cooling, centrifuging and filtering, washing deionized water for 3 times, washing with ethanol for 3 times, washing with acetone for 1 time, and vacuum freeze-drying for 12 hours to obtain a compound stabilizer, wherein the deionized water, magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and deionized water for magnesium nitrate hexahydrate and aluminum nitrate nonahydrate are 3.2mol:0.8mol:500mL:0.6mol:0.2mol:500mL;
example 6
The modified polyolefin comprises the following raw materials in parts by weight: 40 parts of commercial AV161 polyolefin, 12 parts of a compound stabilizer, 5 parts of commercial 1010 antioxidant and 2 parts of commercial PMX-200 lubricant;
The modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 150 ℃ and the screw rotating speed is 300rpm to obtain modified polyolefin;
the composite stabilizer is prepared by the following steps:
B1: adding cyanuric chloride into acetone under the condition of ice-water bath, stirring and mixing to obtain a cyanuric chloride system, adding sulfanilic acid into deionized water, stirring and mixing to obtain a sulfanilic acid system, slowly dropwise adding the sulfanilic acid system into the cyanuric chloride system, reacting for 2-3h under the condition of stirring speed of 100rpm and 5 ℃, dropwise adding sodium bicarbonate solution in the reaction process to control pH to be 5-6, and obtaining a system containing an intermediate a, wherein the molar concentration of the sodium bicarbonate solution is 1mol/L, and the dosage ratio of the cyanuric chloride, the sulfanilic acid, the acetone and the deionized water is 0.5mol:0.5mol:100mL:80mL;
B2: adding 2- (2-hydroxy-5-benzyl) benzotriazole into a system containing the intermediate a under the protection of nitrogen, reacting for 4-6 hours at the stirring speed of 3400rpm and the temperature of 60 ℃, cooling, steaming in a rotary manner, washing with absolute ethanol for 3 times, and drying in vacuum at the temperature of 90 ℃ for 12 hours to obtain an intermediate b, wherein the dosage ratio of the 2- (2-hydroxy-5-benzyl) benzotriazole to the intermediate a is 1mol:0.5mol;
B3: adding sodium hydroxide and an intermediate b into deionized water under the protection of nitrogen, stirring and mixing to obtain a sodium hydroxide intermediate b system, adding magnesium nitrate hexahydrate and aluminum nitrate nonahydrate into deionized water, stirring and mixing to obtain a magnesium aluminum nitrate system, dropwise adding the magnesium aluminum nitrate system into the sodium hydroxide intermediate b system, reacting for 12 hours under the condition of stirring speed of 500rpm and 80 ℃, cooling, centrifuging and filtering, washing deionized water for 3 times, washing with ethanol for 3 times, washing with acetone for 1 time, and vacuum freeze-drying for 12 hours to obtain a compound stabilizer, wherein the deionized water, magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and deionized water for magnesium nitrate hexahydrate and aluminum nitrate nonahydrate are 3.2mol:0.8mol:500mL:0.6mol:0.2mol:500mL;
Example 7
As shown in fig. 1, a mineral cable is formed by sequentially twisting a plurality of monofilament conductors 7 from inside to outside and wrapping a mica insulation tape 6 to obtain a wire core, twisting a plurality of wire cores to obtain a cable core, wherein a ceramic composite tape isolation layer 4 is arranged outside the cable core, glass fiber ropes 5 are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer 4, an extruded mineral insulation layer 3is arranged outside the ceramic composite tape isolation layer 4, a copper belt interlocking armor layer 2 is arranged outside the extruded mineral insulation layer 3, and an outer sheath layer 1 is arranged outside the copper belt interlocking armor layer 2;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
s2: the monofilament conductors are stranded by adopting a compacting and stranding mode, and are commercially available after being wrapped outside
The thickness of the synthetic mica insulation tape is 0.2mm, so that a wire core is obtained;
S3: twisting a plurality of wire cores, wrapping the wire cores by using a commercially available glass fiber silicone rubber ceramic composite tape, wherein the thickness of the commercially available DEASSCO ceramic composite tape is 1.2mm, and filling the space between the wire cores and the ceramic composite tape isolating layer by using commercially available constant-good glass fiber ropes to obtain a cable core;
S4: extruding the ceramic polyolefin of the embodiment 1 outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling the extruded mineral insulating layer by using a water tank, air-drying by using a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinal argon arc welding corrugated copper pipe, extruding the modified polyolefin of the embodiment 4 outside the copper strip linkage armor layer by using an extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 0.8-1.2mm, cooling the water tank, and air-drying by using the dryer to obtain a mineral cable;
Example 8
As shown in fig. 1, a mineral cable is formed by sequentially twisting a plurality of monofilament conductors 7 from inside to outside and wrapping a mica insulation tape 6 to obtain a wire core, twisting a plurality of wire cores to obtain a cable core, wherein a ceramic composite tape isolation layer 4 is arranged outside the cable core, glass fiber ropes 5 are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer 4, an extruded mineral insulation layer 3is arranged outside the ceramic composite tape isolation layer 4, a copper belt interlocking armor layer 2 is arranged outside the extruded mineral insulation layer 3, and an outer sheath layer 1 is arranged outside the copper belt interlocking armor layer 2;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
s2: the monofilament conductors are stranded by adopting a compacting and stranding mode, and are commercially available after being wrapped outside
The thickness of the synthetic mica insulation tape is 0.4mm, so that a wire core is obtained;
s3: twisting a plurality of wire cores, wrapping the wire cores by using a commercially available DEASSCO ceramic composite tape, wherein the thickness of the ceramic composite tape is 0.8mm, and filling the space between the wire cores and the ceramic composite tape isolation layer by using a commercially available Hengjia glass fiber rope to obtain a cable core;
s4: extruding the ceramic polyolefin of the embodiment 2 outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling the extruded mineral insulating layer by using a water tank, air-drying by using a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinal argon arc welding corrugated copper pipe, extruding the modified polyolefin of the embodiment 5 outside the copper strip linkage armor layer by using an extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 0.8-1.2mm, cooling the water tank, and air-drying by using the dryer to obtain the mineral cable;
Example 9
As shown in fig. 1, a mineral cable is formed by sequentially twisting a plurality of monofilament conductors 7 from inside to outside and wrapping a mica insulation tape 6 to obtain a wire core, twisting a plurality of wire cores to obtain a cable core, wherein a ceramic composite tape isolation layer 4 is arranged outside the cable core, glass fiber ropes 5 are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer 4, an extruded mineral insulation layer 3is arranged outside the ceramic composite tape isolation layer 4, a copper belt interlocking armor layer 2 is arranged outside the extruded mineral insulation layer 3, and an outer sheath layer 1 is arranged outside the copper belt interlocking armor layer 2;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
s2: the monofilament conductors are stranded by adopting a compacting and stranding mode, and are commercially available after being wrapped outside
The thickness of the synthetic mica insulation tape is 0.4mm, so that a wire core is obtained;
S3: twisting multiple wire cores, wrapping with commercially available DEASSCO ceramic composite tape with thickness of 1.2mm, and separating between the wire cores and the ceramic composite tape
Filling a commercially available constant-good glass fiber rope to obtain a cable core;
S4: extruding the ceramic polyolefin of the embodiment 3 outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling a water tank, drying by a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinally-wrapped argon arc welding corrugated copper pipe, extruding the modified polyolefin of the embodiment 6 outside the copper strip linkage armor layer by adopting the extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 1.2mm, cooling the water tank, and drying by the dryer to obtain the mineral cable;
Comparative example 1
Comparative example 1 is a commercially available BTTRZ mica tape mineral insulated corrugated copper jacketed cable;
Comparative example 2
As shown in fig. 1, a mineral cable is formed by sequentially twisting a plurality of monofilament conductors 7 from inside to outside and wrapping a mica insulation tape 6 to obtain a wire core, twisting a plurality of wire cores to obtain a cable core, wherein a ceramic composite tape isolation layer 4 is arranged outside the cable core, glass fiber ropes 5 are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer 4, an extruded mineral insulation layer 3is arranged outside the ceramic composite tape isolation layer 4, a copper belt interlocking armor layer 2 is arranged outside the extruded mineral insulation layer 3, and an outer sheath layer 1 is arranged outside the copper belt interlocking armor layer 2;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
s2: the monofilament conductors are stranded by adopting a compacting and stranding mode, and are commercially available after being wrapped outside
The thickness of the synthetic mica insulation tape is 0.4mm, so that a wire core is obtained;
s3: twisting a plurality of wire cores, wrapping the wire cores by using a commercially available DEASSCO ceramic composite tape, wherein the thickness of the ceramic composite tape is 1.2mm, and filling the space between the wire cores and the ceramic composite tape isolation layer by using a commercially available Hengjia glass fiber rope to obtain a cable core;
S4: extruding the ceramic polyolefin of the comparative example 2 outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling a water tank, air-drying by a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinally-wrapped argon arc welding corrugated copper pipe, extruding the modified polyolefin of the example 6 outside the copper strip linkage armor layer by adopting the extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 1.2mm, cooling the water tank, and air-drying by the dryer to obtain the mineral cable;
The ceramic polyolefin of the comparative example 2 comprises the following raw materials in parts by weight: 40 parts of commercial AV161 polyolefin resin, 30 parts of montmorillonite, 20 parts of commercial FR-MPP200 flame retardant, 5 parts of zinc borate, 2 parts of commercial PMX-200 lubricant and 2 parts of commercial 1010 antioxidant;
The comparative example 2 ceramized polyolefin was prepared by the following steps: adding polyolefin resin, montmorillonite, a flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 150 ℃ and the screw rotating speed is 300rpm to obtain ceramic polyolefin of comparative example 2;
Comparative example 3
As shown in fig. 1, a mineral cable is formed by sequentially twisting a plurality of monofilament conductors 7 from inside to outside and wrapping a mica insulation tape 6 to obtain a wire core, twisting a plurality of wire cores to obtain a cable core, wherein a ceramic composite tape isolation layer 4 is arranged outside the cable core, glass fiber ropes 5 are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer 4, an extruded mineral insulation layer 3is arranged outside the ceramic composite tape isolation layer 4, a copper belt interlocking armor layer 2 is arranged outside the extruded mineral insulation layer 3, and an outer sheath layer 1 is arranged outside the copper belt interlocking armor layer 2;
A mineral cable is prepared by the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
s2: the monofilament conductors are stranded by adopting a compacting and stranding mode, and are commercially available after being wrapped outside
The thickness of the mica insulation tape is 0.4mm, so that a wire core is obtained;
s3: twisting a plurality of wire cores, wrapping the wire cores by using a commercially available DEASSCO ceramic composite tape, wherein the thickness of the ceramic composite tape is 1.2mm, and filling the space between the wire cores and the ceramic composite tape isolation layer by using a commercially available Hengjia glass fiber rope to obtain a cable core;
S4: extruding the ceramic polyolefin of the embodiment 3 outside a cable core by adopting a direct extrusion method to form an extruded mineral insulating layer, cooling a water tank, drying by a dryer, preparing a copper strip linkage armor layer outside the extruded mineral insulating layer by adopting a longitudinally-wrapped argon arc welding corrugated copper pipe, extruding the modified polyolefin of the comparative embodiment 3 outside the copper strip linkage armor layer by adopting the extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 1.2mm, cooling the water tank, and drying by the dryer to obtain the mineral cable;
The modified polyolefin of the comparative example 3 comprises the following raw materials in parts by weight: 40 parts of a commercial AV161 polyolefin, 12 parts of a commercial UV326 stabilizer, 5 parts of a commercial 1010 antioxidant and 2 parts of a commercial PMX-200 oil lubricant;
The modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 150 ℃ and the screw rotating speed is 300rpm to obtain modified polyolefin of comparative example 3;
The mineral cables prepared in example 7, example 8, example 9, comparative example 1, comparative example 2 and comparative example 3 were tested for continuous power supply time at high temperature with reference to GB/T19216-2003, for combustion performance with reference to GB/T31247-2014, for 800h aging with reference to GB/T16422-2022, and for the following test results:
| Detecting items | Example 7 | Example 8 | Example 9 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Continuous power supply time (min) at 800 DEG C | 198 | 204 | 205 | 186 | 191 | 194 |
| Continuous power supply time (min) at 1000 DEG C | 192 | 196 | 201 | 182 | 185 | 188 |
| Continuous power supply time (min) at 1000 ℃ after aging | 183 | 184 | 186 | 153 | 162 | 155 |
| Combustion performance | A | A | A | A | B1 | B1 |
| Burn Performance test after aging | A | A | A | B1 | B1 | B1 |
From the test results of the table, it can be seen that the mineral cables prepared in examples 7, 8 and 9 have advantages over comparative example 1 before aging treatment, but the cables prepared in examples have obvious advantages over comparative example 1 after aging treatment, which means that the cables prepared in examples have good high temperature and weather resistance, and that the composite flame retardant and composite stabilizer in the ceramized polyolefin and modified polyolefin have obviously reduced high temperature power supply time and combustion performance after replacement with commercial products, which means that the composite flame retardant and composite stabilizer can play a role in improving the flame retardant and weather resistance of the polyolefin, as compared with comparative examples 2 and 3;
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (9)
1. A mineral cable, characterized by: a plurality of monofilament conductors (7) are stranded and then wrapped with a mica insulation tape (6) in sequence from inside to outside to obtain a wire core, the wire cores are stranded to obtain a cable core, a ceramic composite tape isolation layer (4) is arranged outside the cable core, glass fiber ropes (5) are filled between the wire cores and between the wire core and the ceramic composite tape isolation layer (4), an extruded mineral insulation layer (3) is arranged outside the ceramic composite tape isolation layer (4), a copper strip interlocking armor layer (2) is arranged outside the extruded mineral insulation layer (3), and an outer sheath layer (1) is arranged outside the copper strip interlocking armor layer (2);
The extruded mineral insulating layer is prepared from ceramic polyolefin as a raw material, and the outer sheath layer is prepared from modified polyolefin as a raw material;
the ceramic polyolefin comprises the following raw materials in parts by weight: 30-40 parts of polyolefin resin, 20-30 parts of montmorillonite, 10-20 parts of composite flame retardant, 3-5 parts of zinc borate, 1-2 parts of lubricant and 1-2 parts of antioxidant;
The ceramic polyolefin is prepared by the following steps: adding polyolefin resin, montmorillonite, a composite flame retardant, zinc borate, a lubricant and an antioxidant into a high-speed blender, mixing, adding into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130-150 ℃ and the screw rotating speed is 200-300rpm to obtain ceramic polyolefin;
the composite flame retardant is prepared by the following steps:
A1: adding isophthalaldehyde and DOPO into toluene, reacting for 4 hours under the conditions of stirring speed of 100-200rpm and 125 ℃, cooling, filtering, washing with toluene for three times, and vacuum drying at 75 ℃ for 12 hours to obtain an intermediate 1;
a2: adding the intermediate 1 and triethylamine into acetone, stirring and mixing, adding cyanuric chloride, reacting for 12 hours at the stirring speed of 200-300rpm and room temperature, performing rotary evaporation, washing with sodium hydroxide solution for three times, washing with deionized water for three times, and performing vacuum drying at 50 ℃ for 12 hours to obtain an intermediate 2;
A3: mixing 4-bromophenol, sodium hydroxide and anhydrous tetrahydrofuran under the protection of nitrogen, adding the intermediate 2, reacting for 18 hours under the condition of stirring speed of 100-200rpm and 60 ℃, cooling, rotary evaporation and filtration, and separating and purifying by a silica gel column to obtain an intermediate 3;
A4: mixing the intermediate 3 with anhydrous tetrahydrofuran under the protection of nitrogen, stirring for 30-60min at the stirring speed of 50-100rpm and at the temperature of minus 78 ℃, slowly dripping n-butyllithium, continuously stirring for 2-3h after dripping, slowly dripping triisopropyl borate, continuously stirring for 2-3h after dripping, reacting for 10-12h at the stirring speed of 50-100rpm and at the room temperature, rotary steaming, filtering, washing with deionized water for three times, washing with dichloromethane for three times, and vacuum drying at the temperature of 50 ℃ for 12h to obtain the composite flame retardant;
the modified polyolefin comprises the following raw materials in parts by weight: 30-40 parts of polyolefin, 8-12 parts of composite stabilizer, 3-5 parts of antioxidant and 1-2 parts of lubricant;
the modified polyolefin is prepared by the following steps: adding polyolefin resin, a composite stabilizer, an antioxidant and a lubricant into a high-speed blender for mixing, adding the mixture into a double-screw extruder, and extruding and granulating under the conditions that the screw temperature of the double-screw extruder is 130-150 ℃ and the screw rotating speed is 200-300rpm to obtain modified polyolefin;
the composite stabilizer is prepared by the following steps:
B1: adding cyanuric chloride into acetone under the condition of ice-water bath, stirring and mixing to obtain a cyanuric chloride system, adding sulfanilic acid into deionized water, stirring and mixing to obtain a sulfanilic acid system, slowly dropwise adding the sulfanilic acid system into the cyanuric chloride system, reacting for 2-3h under the conditions of stirring speed of 50-100rpm and 0-5 ℃, dropwise adding sodium bicarbonate solution in the reaction process, and controlling pH to be 5-6 to obtain a system containing an intermediate a;
B2: adding 2- (2-hydroxy-5-benzyl) benzotriazole into a system containing the intermediate a under the protection of nitrogen, reacting for 4-6 hours at the stirring speed of 300-400rpm and the temperature of 60 ℃, cooling, steaming in a rotary manner, washing with absolute ethanol for 3 times, and drying in vacuum at the temperature of 90 ℃ for 12 hours to obtain an intermediate b;
B3: adding sodium hydroxide and the intermediate b into deionized water under the protection of nitrogen, stirring and mixing to obtain a sodium hydroxide intermediate b system, adding magnesium nitrate hexahydrate and aluminum nitrate nonahydrate into deionized water, stirring and mixing to obtain a magnesium aluminum nitrate system, dropwise adding the magnesium aluminum nitrate system into the sodium hydroxide intermediate b system, reacting for 12 hours under the condition that the stirring speed is 400-500rpm and 80 ℃, cooling, centrifuging, filtering, washing with deionized water for 3 times, washing with ethanol for 3 times, washing with acetone for 1 time, and vacuum freeze-drying for 12 hours to obtain the composite stabilizer.
2. A mineral cable according to claim 1, characterized in that: in the A1 step, the dosage ratio of isophthalaldehyde, DOPO and toluene is 0.1mol:0.2mol:400-500mL.
3. A mineral cable according to claim 1, characterized in that: in the step A2, the mass fraction of the sodium hydroxide solution is 20%, and the dosage ratio of the intermediate 1 to the cyanuric chloride to the triethylamine to the acetone is 0.1mol:0.2mol:0.001mol:200-300mL.
4. A mineral cable according to claim 1, characterized in that: in the step A3, the volume ratio of dichloromethane to petroleum ether in the silica gel column is 1:3, 4-bromophenol, intermediate 2, sodium hydroxide and anhydrous tetrahydrofuran in a ratio of 0.4 to 0.5mol:0.1mol:0.05mol:150-200ml.
5. A mineral cable according to claim 1, characterized in that: in the step A4, the dosage ratio of the intermediate 3, the triisopropyl borate, the n-butyllithium and the anhydrous tetrahydrofuran is 0.1mol:0.6 to 0.8mol:0.4mol:150-200mL.
6. A mineral cable according to claim 1, characterized in that: in the step B1, the molar concentration of the sodium bicarbonate solution is 1mol/L, and the dosage ratio of cyanuric chloride, sulfanilic acid, acetone and deionized water is 0.5mol:0.5mol:80-100mL:60-80mL.
7. A mineral cable according to claim 1, characterized in that: in the step B2, the dosage ratio of the 2- (2-hydroxy-5-benzyl) benzotriazole to the intermediate a is 1mol:0.5mol.
8. A mineral cable according to claim 1, characterized in that: in the step B3, deionized water, magnesium nitrate hexahydrate, aluminum nitrate hexahydrate, magnesium nitrate hexahydrate and aluminum nitrate nonahydrate used for the sodium hydroxide, the intermediate B, the sodium hydroxide and the intermediate B are used in a deionized water dosage ratio of 3.2mol:0.8mol:500mL:0.6mol:0.2mol:500mL.
9. The method for preparing a mineral cable according to claim 1, wherein: the preparation method comprises the following steps:
s1: drawing the round copper wire by using a continuous annealing copper wire drawing machine at normal temperature, and annealing by using a contact resistance method to obtain a monofilament conductor;
S2: twisting a plurality of monofilament conductors in a compacting twisting mode, and wrapping a mica insulation tape outside the monofilament conductors, wherein the thickness of the mica insulation tape is 0.2-0.4mm, so as to obtain a wire core;
S3: twisting a plurality of wire cores, wrapping the wire cores by using a ceramic composite tape, wherein the thickness of the ceramic composite tape is 0.8-1.2mm, and the wire cores and the isolation layers of the ceramic composite tape are filled by glass fiber ropes to obtain a cable core;
S4: the method comprises the steps of adopting a direct extrusion method to extrude ceramic polyolefin outside a cable core to form an extruded mineral insulating layer, cooling a water tank, air-drying by a dryer, adopting a longitudinally-wrapped argon arc welding corrugated copper pipe outside the extruded mineral insulating layer to prepare a copper strip chain armor layer, extruding modified polyolefin outside the copper strip chain armor layer by the extruder to form an outer sheath layer, wherein the thickness of the outer sheath layer is 0.8-1.2mm, cooling the water tank, and air-drying by the dryer to obtain the mineral cable.
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| WO2015060306A1 (en) * | 2013-10-23 | 2015-04-30 | 日本化薬株式会社 | Epoxy resin mixture, epoxy resin composition, prepreg, and cured article thereof |
| CN111540521A (en) * | 2020-05-12 | 2020-08-14 | 陈丽碧 | Anti-pressure anti-interference flame-retardant composite cable |
| CN113628788A (en) * | 2021-08-12 | 2021-11-09 | 广东远光电缆实业有限公司 | Manufacturing method of flexible mineral insulation fireproof cable |
| CN114015156A (en) * | 2021-11-11 | 2022-02-08 | 桐庐富力电力器材有限公司 | High strength MPP cable protection pipe |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015060306A1 (en) * | 2013-10-23 | 2015-04-30 | 日本化薬株式会社 | Epoxy resin mixture, epoxy resin composition, prepreg, and cured article thereof |
| CN111540521A (en) * | 2020-05-12 | 2020-08-14 | 陈丽碧 | Anti-pressure anti-interference flame-retardant composite cable |
| CN113628788A (en) * | 2021-08-12 | 2021-11-09 | 广东远光电缆实业有限公司 | Manufacturing method of flexible mineral insulation fireproof cable |
| CN114015156A (en) * | 2021-11-11 | 2022-02-08 | 桐庐富力电力器材有限公司 | High strength MPP cable protection pipe |
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