CN115109353B - Processing method of fluorescent flame-retardant cable - Google Patents
Processing method of fluorescent flame-retardant cable Download PDFInfo
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- CN115109353B CN115109353B CN202210850681.5A CN202210850681A CN115109353B CN 115109353 B CN115109353 B CN 115109353B CN 202210850681 A CN202210850681 A CN 202210850681A CN 115109353 B CN115109353 B CN 115109353B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 45
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000003672 processing method Methods 0.000 title claims abstract description 6
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 58
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 58
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 58
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000002360 preparation method Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 18
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical class [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 239000010949 copper Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 238000007747 plating Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 35
- 239000000725 suspension Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 claims description 20
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 19
- 229920002379 silicone rubber Polymers 0.000 claims description 18
- 239000004945 silicone rubber Substances 0.000 claims description 18
- 238000004513 sizing Methods 0.000 claims description 16
- 229910001051 Magnalium Inorganic materials 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 14
- 239000012266 salt solution Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000005662 Paraffin oil Substances 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000004595 color masterbatch Substances 0.000 claims description 8
- 150000008301 phosphite esters Chemical class 0.000 claims description 8
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 5
- 229910052882 wollastonite Inorganic materials 0.000 claims description 5
- 239000012765 fibrous filler Substances 0.000 claims description 4
- -1 methyl vinyl phenyl Chemical group 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000000779 smoke Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010051246 Photodermatosis Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000008845 photoaging Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- H01B13/008—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing extensible conductors or cables
-
- 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
- H01B13/02—Stranding-up
-
- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
-
- 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
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application belongs to the technical field of cable production, and in particular relates to a processing method of a fluorescent flame-retardant cable, wherein the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise: step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die; according to the application, the PVC resin is adopted as the main body material of the cable insulation protective sleeve, a certain amount of fiber filler with flame retardant property is added, the surface of the fiber filler is modified by the silane coupling agent, and the flame retardant property and the thermal stability are further improved after modification on the premise that the strength of the cable material can be improved by the fiber filler; in addition, the preparation raw materials are also added with modified magnesium aluminum hydrotalcite, so that compared with common hydrotalcite, the flame retardant property and the thermal stability of the cable material can be greatly improved.
Description
Technical Field
The application belongs to the technical field of cable production, and particularly relates to a processing method of a fluorescent flame-retardant cable.
Background
The traditional cable contains more halogen flame retardants and organic materials, has excellent flame retardance, processability and compatibility, good weather resistance, chemical stability and electrical properties, and high heat resistance stability, but after encountering fire, flame can be caused to burn along the cable, toxic smoke and gas can be emitted simultaneously, in addition, the cable burns to release a large amount of heat, the total release of heat is large, the release of heat per unit time is large, the smoke amount is large, larger harm is brought to trapped personnel, and the danger of secondary disasters is easily brought to the environment, so that more and more industries and departments now start to limit or prohibit the use of halogen flame retardants.
With the rapid development of economy, the electric wires and cables are widely applied in various industries and fields, along with the frequent occurrence of electric fire accidents, the flame retardation problem of the electric wires and cables gradually attracts attention of various countries around the world, a large amount of smoke and toxic and corrosive gases are released when the cables are combusted as dangerous factors in the fire, the safe evacuation and fire extinguishing work of people is prevented in the fire, the lives and properties are seriously lost, and meanwhile, along with the development of communication industry, automobile industry, computer industry and the like, the market demand for flame retardation cables is larger and the performance requirement is higher.
Disclosure of Invention
The application aims to provide a processing method of a fluorescent flame-retardant cable so as to solve the problems in the background technology.
The application realizes the above purpose through the following technical scheme:
the method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: mixing PVC resin, silicone rubber, dimethyl disulfide, glass beads, masterbatch, epoxy resin, phosphite ester, fluorescent powder, fibrous filler and coupling agent, and banburying to prepare masterbatch;
s2: adding modified magnalium hydrotalcite and paraffin oil into the masterbatch, and mixing and banburying to obtain sizing material;
s3: uniformly mixing the obtained sizing material, stirring, and finally extruding and granulating to obtain the insulating protective sleeve;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
The insulation protection sleeve is further improved in that the insulation protection sleeve comprises the following preparation raw materials in parts by weight: 70-80 parts of PVC resin, 40-50 parts of silicone rubber, 1-3 parts of dimethyl disulfide, 6-8 parts of glass beads, 1-3 parts of color master batch, 2-5 parts of epoxy resin, 1-3 parts of phosphite ester, 5-10 parts of fluorescent powder, 25-30 parts of fibrous filler, 3-6 parts of coupling agent, 20-28 parts of modified magnesium aluminum hydrotalcite and 0.1-0.5 part of paraffin oil.
The further improvement is that the preparation steps of the modified magnesium aluminum hydrotalcite in the second step are as follows: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing into a crucible for heating after stirring for 20-40 minutes, standing and cooling to obtain slurry after heating to 120-150 ℃, carrying out suction filtration and washing on the slurry for three times, and finally drying at 80 ℃ for 24 hours to obtain the modified magnalium hydrotalcite.
The preparation method of the magnesium aluminum hydrotalcite suspension is further improved in that the preparation steps of the magnesium aluminum hydrotalcite suspension are as follows: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
The further improvement is that in the second step, the stirring speed of the high-speed stirrer is 500-900rpm, the extrusion granulation is carried out in a double-screw extruder, and the extrusion temperature is 180-250 ℃.
The further improvement is that the silicone rubber is one or two of methyl vinyl silicone rubber and methyl vinyl phenyl silicone rubber.
The further improvement is that the fiber filler is one or more selected from light calcium carbonate, wollastonite, carbon fiber and glass fiber.
The further improvement is that the coupling agent is one of a silane coupling agent KH-550, a silane coupling agent KH-560 and a silane coupling agent KH-570.
The application has the beneficial effects that:
according to the application, the PVC resin is adopted as the main material of the cable insulation protective sleeve, and the silicone rubber is adopted as the auxiliary material, so that the cable has excellent thermo-oxidative aging resistance, ozone aging resistance, photo aging resistance and weather aging resistance, and the surface energy of the silicone rubber is low, has hygroscopicity and plays a role in isolation; in addition, a certain amount of fiber filler with flame retardant property is added, the surface of the fiber filler is modified by a silane coupling agent, and the flame retardant property and the thermal stability are further improved after modification on the premise that the strength of the cable material can be improved by the fiber filler; in addition, the preparation raw materials are also added with modified magnesium aluminum hydrotalcite, so that compared with common hydrotalcite, the flame retardant property and the thermal stability of the cable material can be greatly improved.
Detailed Description
The following detailed description of the application is provided to illustrate the application and should not be construed as limiting the scope of the application since it is intended that the following detailed description is given for the purpose of illustration only, and that certain non-essential modifications and adaptations of the application may occur to those skilled in the art in light of the foregoing disclosure.
Example 1
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: 70 parts of PVC resin, 40 parts of methyl vinyl silicone rubber, 1 part of dimethyl disulfide, 6 parts of glass beads, 1 part of color master batch, 2 parts of epoxy resin, 1 part of phosphite, 5 parts of fluorescent powder, 25 parts of calcium carbonate and wollastonite mixture and 3 parts of silane coupling agent KH-550 are mixed and then added into an internal mixer for banburying, so as to prepare master batch;
s2: adding 20 parts of modified magnesium aluminum hydrotalcite and 0.1 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 500rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
Specifically, the preparation steps of the modified magnesium aluminum hydrotalcite in the second step are as follows: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing into a crucible for heating after stirring for 20 minutes, standing and cooling to obtain slurry after heating to 120 ℃, carrying out suction filtration and washing on the slurry for three times, and finally drying at 80 ℃ for 24 hours to obtain the modified magnalium hydrotalcite.
Specifically, the preparation method of the magnesium aluminum hydrotalcite suspension comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
Example 2
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: 75 parts of PVC resin, 45 parts of methyl vinyl silicone rubber, 2 parts of dimethyl disulfide, 7 parts of glass beads, 2 parts of color master batch, 3 parts of epoxy resin, 2 parts of phosphite ester, 7 parts of fluorescent powder, 28 parts of carbon fiber and 4 parts of silane coupling agent KH-560 are mixed and then added into an internal mixer for internal mixing, so as to prepare master batch;
s2: adding 25 parts of modified magnesium aluminum hydrotalcite and 0.3 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 700rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
Specifically, the preparation steps of the modified magnesium aluminum hydrotalcite in the second step are as follows: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing the mixture into a crucible for heating after stirring for 30 minutes, standing and cooling the mixture to 130 ℃ to obtain slurry, carrying out suction filtration and washing on the slurry for three times, and finally drying the slurry at 80 ℃ for 24 hours to obtain the modified magnalium hydrotalcite.
Specifically, the preparation method of the magnesium aluminum hydrotalcite suspension comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
Example 3
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: mixing 80 parts of PVC resin, 50 parts of methyl vinyl phenyl silicone rubber, 3 parts of dimethyl disulfide, 8 parts of glass beads, 3 parts of color master batch, 5 parts of epoxy resin, 3 parts of phosphite ester, 10 parts of fluorescent powder, 30 parts of carbon fiber and 6 parts of silane coupling agent KH-570, and then adding into an internal mixer for internal mixing to prepare master batch;
s2: adding 28 parts of modified magnesium aluminum hydrotalcite and 0.5 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 900rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
Specifically, the preparation steps of the modified magnesium aluminum hydrotalcite in the second step are as follows: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing into a crucible for heating after stirring for 40 minutes, standing and cooling to obtain slurry after heating to 150 ℃, carrying out suction filtration and washing on the slurry for three times, and finally drying at 80 ℃ for 24 hours to obtain the modified magnalium hydrotalcite.
Specifically, the preparation method of the magnesium aluminum hydrotalcite suspension comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
Comparative example 1
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: 73 parts of PVC resin, 40 parts of methyl vinyl silicone rubber, 1 part of dimethyl disulfide, 6 parts of glass beads, 1 part of color master batch, 2 parts of epoxy resin, 1 part of phosphite, 5 parts of fluorescent powder, 25 parts of calcium carbonate and wollastonite are mixed and then added into an internal mixer for banburying, so as to prepare master batch;
s2: adding 20 parts of modified magnesium aluminum hydrotalcite and 0.1 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 500rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
Specifically, the preparation steps of the modified magnesium aluminum hydrotalcite in the second step are as follows: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing into a crucible for heating after stirring for 20 minutes, standing and cooling to obtain slurry after heating to 120 ℃, carrying out suction filtration and washing on the slurry for three times, and finally drying at 80 ℃ for 24 hours to obtain the modified magnalium hydrotalcite.
Specifically, the preparation method of the magnesium aluminum hydrotalcite suspension comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
It should be noted that this comparative example differs from example 1 only in that: the silane coupling agent was replaced with an equal weight portion of PVC resin.
Comparative example 2
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: 75 parts of PVC resin, 45 parts of methyl vinyl silicone rubber, 2 parts of dimethyl disulfide, 7 parts of glass beads, 2 parts of color master batch, 3 parts of epoxy resin, 2 parts of phosphite ester, 7 parts of fluorescent powder, 28 parts of carbon fiber and 4 parts of silane coupling agent KH-560 are mixed and then added into an internal mixer for internal mixing, so as to prepare master batch;
s2: adding 25 parts of magnesium aluminum hydrotalcite and 0.3 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 700rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
Specifically, the preparation method of the magnesium aluminum hydrotalcite comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; and (3) dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain the magnesium aluminum hydrotalcite suspension.
It should be noted that the only difference between this comparative example and example 2 is that: the modified magnesium aluminum hydrotalcite is replaced by equal parts by weight of magnesium aluminum hydrotalcite.
Comparative example 3
The method for processing the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: mixing 80 parts of PVC resin, 50 parts of methyl vinyl phenyl silicone rubber, 3 parts of dimethyl disulfide, 8 parts of glass beads, 3 parts of color master batch, 5 parts of epoxy resin, 3 parts of phosphite ester, 10 parts of fluorescent powder, 30 parts of carbon fiber and 6 parts of silane coupling agent KH-570, and then adding into an internal mixer for internal mixing to prepare master batch;
s2: adding 28 parts of hydrotalcite and 0.5 part of paraffin oil into the internal mixer, and mixing and banburying to prepare sizing materials;
s3: adding the obtained sizing material into a premixing machine, uniformly mixing, transferring into a stirrer for stirring, extruding and granulating in a double-screw extruder at the stirring speed of 900rpm, and finally extruding and granulating to obtain the insulating protective sleeve material;
step three: and (3) cabling and stranding the cable conductor in the step one through cabling equipment, and extruding the insulating protective sleeve onto the cable conductor through a semi-extrusion die to obtain the fluorescent flame-retardant cable.
It should be noted that the only difference between this comparative example and example 3 is that: the modified magnalium hydrotalcite is replaced by common hydrotalcite with equal weight parts.
Each index test was performed on the fluorescent flame-retardant cables prepared in examples 1 to 3 and comparative examples 1 to 3,
1. UL94 flammability test and flame retardant time test
Test device: the test is carried out in a test furnace, a burner, a wire mesh, a temperature and humidity control chamber;
according to the burning time of the sample, whether the absorbent cotton is ignited or not, and other results are divided into V-0, V-1 and V-2 from high to low;
the flame retardant time is the time from the initiation of ignition of the sample to the initiation of combustion of the sample.
2. Elongation at break test
The elongation at break of the test sample is measured according to GB/T1040-2006 determination of tensile Property of plastics;
3. room temperature compressive strength test
The normal temperature compressive strength of the test sample is detected according to YB/T5201 standard;
the test results were obtained as follows:
as can be seen from the table, the cable performance in the examples 1-3 is obviously better than that of the comparative examples 1-3, and the cable performance is reflected in good flame retardant property, fire resistance and mechanical property, so that the cable has wider application range;
specifically, the following steps are as follows: as can be seen from the experimental data of the embodiment 1 and the comparative example 1, the mechanical strength of the cable can be greatly improved by adding the silane coupling agent, and the flame retardant property can be slightly improved to a certain extent, because the silane coupling agent is used for modifying the surface of the fiber filler when the silane coupling agent is mixed with the fiber filler, the strength of the cable material can be improved by the fiber filler, the performance is further improved after the modification, and meanwhile, the flame retardant property and the thermal stability of the cable material are improved by selecting the filler with the flame retardant property such as calcium carbonate, wollastonite, carbon fiber and glass fiber;
as can be seen from experimental data of the embodiment 2 and the comparative embodiment 2 and the embodiment 3 and the comparative embodiment 3, the flame retardant property of the cable is greatly improved by adding the modified magnesium aluminum hydrotalcite into the preparation raw material of the cable insulation protective sleeve, the common hydrotalcite is replaced by the magnesium aluminum hydrotalcite while the hydrotalcite has the flame retardant property, the concentration of the water vapor which is released by thermal decomposition can dilute the combustible gas, and the modified magnesium aluminum hydrotalcite is nontoxic and noncorrosive and has smoke suppression effect, and in addition, carbon dioxide generated by the decomposition of the magnesium aluminum hydrotalcite also has flame suppression effect.
In summary, the PVC resin is adopted as the main material of the cable insulation protective sleeve, the modified magnesium aluminum hydrotalcite is added into the auxiliary material, so that the flame retardant property and the thermal stability of the cable material can be greatly improved, the fiber filler is added, and the mechanical strength of the cable can be greatly improved through the mixed use of a small amount of silane coupling agent.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (5)
1. The processing method of the fluorescent flame-retardant cable is characterized in that the fluorescent flame-retardant cable comprises a conductor and an insulating protective sleeve arranged on the outer layer of the conductor, and the processing steps comprise:
step one: manufacturing a cable conductor: twisting round copper wires and round aluminum wires together, and drawing and compacting the round copper wires and the round aluminum wires by adopting a nano-plating hard alloy die;
step two: preparation of an insulating protective sleeve:
s1: mixing PVC resin, silicone rubber, dimethyl disulfide, glass beads, masterbatch, epoxy resin, phosphite ester, fluorescent powder, fibrous filler and coupling agent, and banburying to prepare masterbatch;
s2: adding modified magnalium hydrotalcite and paraffin oil into the masterbatch, and mixing and banburying to obtain sizing material;
s3: uniformly mixing the obtained sizing material, stirring, and finally extruding and granulating to obtain the insulating protective sleeve;
step three: cable stranding is carried out on the cable conductor in the first step through cable forming equipment, and then the insulating protective sleeve is extruded onto the cable conductor through a semi-extrusion die, so that the fluorescent flame-retardant cable is obtained;
the preparation method of the modified magnesium aluminum hydrotalcite in the second step comprises the following steps: adding titanate into the magnalium hydrotalcite suspension, stirring and dispersing, placing into a crucible for heating after stirring for 20-40 minutes, standing and cooling to obtain slurry after heating to 120-150 ℃, carrying out suction filtration and washing on the slurry for three times, and finally drying at 80 ℃ for 24 hours to obtain modified magnalium hydrotalcite;
the preparation method of the magnesium aluminum hydrotalcite suspension comprises the following steps: weighing sodium hydroxide and anhydrous sodium carbonate solids, adding deionized water, dissolving, and adding water to prepare an alkali solution; weighing magnesium nitrate and aluminum nitrate solids, adding deionized water, dissolving, and adding water to prepare a salt solution; dripping the obtained alkali solution and salt solution into a three-port beaker, fully stirring to obtain a suspension, and crystallizing the suspension under the constant temperature condition to obtain a magnesium aluminum hydrotalcite suspension;
the coupling agent is one of a silane coupling agent KH-550, a silane coupling agent KH-560 and a silane coupling agent KH-570.
2. The method for processing a fluorescent flame-retardant cable according to claim 1, wherein: the insulating protective sleeve comprises the following preparation raw materials in parts by weight: 70-80 parts of PVC resin, 40-50 parts of silicone rubber, 1-3 parts of dimethyl disulfide, 6-8 parts of glass beads, 1-3 parts of color master batch, 2-5 parts of epoxy resin, 1-3 parts of phosphite ester, 5-10 parts of fluorescent powder, 25-30 parts of fibrous filler, 3-6 parts of coupling agent, 20-28 parts of modified magnesium aluminum hydrotalcite and 0.1-0.5 part of paraffin oil.
3. The method for processing a fluorescent flame-retardant cable according to claim 1, wherein: the stirring speed in the second step is 500-900rpm, extrusion granulation is carried out in a double-screw extruder, and the extrusion temperature is 180-250 ℃.
4. The method for processing a fluorescent flame-retardant cable according to claim 1, wherein: the silicone rubber is one or two of methyl vinyl silicone rubber and methyl vinyl phenyl silicone rubber.
5. The method for processing a fluorescent flame-retardant cable according to claim 1, wherein: the fiber filler is one or more selected from light calcium carbonate, wollastonite, carbon fiber and glass fiber.
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