CN116589778B - Anti-aging cable protective sleeve, preparation method thereof and anti-aging cable - Google Patents
Anti-aging cable protective sleeve, preparation method thereof and anti-aging cable Download PDFInfo
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- CN116589778B CN116589778B CN202310863374.5A CN202310863374A CN116589778B CN 116589778 B CN116589778 B CN 116589778B CN 202310863374 A CN202310863374 A CN 202310863374A CN 116589778 B CN116589778 B CN 116589778B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 59
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 74
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 72
- 239000002245 particle Substances 0.000 claims abstract description 71
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 36
- 230000002745 absorbent Effects 0.000 claims abstract description 33
- 239000002250 absorbent Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 26
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract 2
- 230000032683 aging Effects 0.000 claims description 38
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 26
- 241001122767 Theaceae Species 0.000 claims description 20
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 19
- 235000013824 polyphenols Nutrition 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 14
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 14
- 239000005639 Lauric acid Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- CMPQUABWPXYYSH-UHFFFAOYSA-N phenyl phosphate Chemical compound OP(O)(=O)OC1=CC=CC=C1 CMPQUABWPXYYSH-UHFFFAOYSA-N 0.000 claims description 11
- 229910021645 metal ion Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000000536 complexating effect Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- 238000010521 absorption reaction Methods 0.000 abstract description 12
- 230000003679 aging effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 53
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 42
- 230000000052 comparative effect Effects 0.000 description 31
- 230000014759 maintenance of location Effects 0.000 description 13
- 239000004408 titanium dioxide Substances 0.000 description 13
- 239000011241 protective layer Substances 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 7
- 239000003431 cross linking reagent Substances 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012782 phase change material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000012812 general test Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallyl group Chemical group C1(=C(C(=CC=C1)O)O)O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
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- 238000005406 washing Methods 0.000 description 2
- XJSRKJAHJGCPGC-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane Chemical compound FC(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F XJSRKJAHJGCPGC-UHFFFAOYSA-N 0.000 description 1
- BSKJUAKMZZKMKC-UHFFFAOYSA-N 1,2-ditert-butyl-3,4-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=C(C(C)(C)C)C(C(C)(C)C)=C1C(C)C BSKJUAKMZZKMKC-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- DGLRDKLJZLEJCY-UHFFFAOYSA-L disodium hydrogenphosphate dodecahydrate Chemical group O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O DGLRDKLJZLEJCY-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
- C08K5/523—Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl 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
- C08K9/00—Use of pretreated ingredients
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- 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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/428—Heat conduction
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The application relates to the technical field of cable materials, and particularly discloses an anti-aging cable protective sleeve, a preparation method thereof and an anti-aging cable. An anti-aging cable protective sleeve comprises the following raw materials: polymer base stock, expandable graphite, nano titanium dioxide, reflective particles and organic ultraviolet absorbent; the reflective particles comprise nano calcium carbonate and nano barium sulfate; nano titanium dioxide: nano calcium carbonate: the particle size ratio of the nano barium sulfate is (5-9): (2-3): 1, a step of; the preparation method comprises the following steps: melting and extruding part of the polymer base material to obtain an inner layer; the expandable graphite is sequentially adsorbed with an organic ultraviolet absorbent, nano titanium dioxide and reflective particles; adding the rest polymer base materials, melting, blending and extrusion molding to obtain an outer layer; the inner layer is bonded with the outer layer to obtain the protective sleeve. The cable disclosed by the application has the advantages that the ultraviolet absorption effect of the nano titanium dioxide is improved, and the aging effect of the ultraviolet on the protective sleeve is weakened.
Description
Technical Field
The application relates to the technical field of cable materials, in particular to an anti-aging cable protective sleeve, a preparation method thereof and an anti-aging cable.
Background
The cable is a generic term for articles such as an optical cable and a cable, and the use of the cable is many, and the cable is mainly used for controlling multiple functions such as installation, connection equipment, power transmission and the like, and is indispensable in daily life.
The cable is made by wrapping the wire core with a protective sleeve, the protective sleeve is a part for protecting the wire core from various physical and chemical damages from the outside, and the protective sleeve is generally made of organic materials such as rubber, polyethylene and the like.
When the cable is used outdoors for a long time, the protective sleeve is exposed to sunlight and is easy to age under ultraviolet irradiation, and meanwhile, in the use process of the cable, a large amount of heat is generated by the cable core, and the heat is accumulated in the protective sleeve to accelerate the aging of the protective sleeve; to retard the aging of the protective sheath, an ultraviolet inhibitor, typically an inorganic ultraviolet inhibitor such as titanium dioxide particles, or an organic ultraviolet absorber, is added to the protective sheath.
In view of the above-mentioned related art, the applicant found that after long-term use of the organic ultraviolet absorber, the effect of absorbing ultraviolet light is reduced due to light degradation or the like, and that only the light-facing surface of titanium dioxide can absorb ultraviolet light, so that the degradation of the cable protective cover can be delayed to some extent, but the time for delaying the degradation needs to be further prolonged.
Disclosure of Invention
In order to enhance the ageing-resistant effect of a cable, the application provides an ageing-resistant cable protective sleeve, a preparation method thereof and an ageing-resistant cable.
In a first aspect, the present application provides an anti-aging cable protection sleeve, which adopts the following technical scheme:
an anti-aging cable protective sleeve comprises the following raw materials in parts by weight: 100-200 parts of polymer base stock, 25-40 parts of expandable graphite, 5-10 parts of nano titanium dioxide, 3-5 parts of reflective particles and 4-8 parts of organic ultraviolet absorbent;
the reflective particles comprise nano calcium carbonate and nano barium sulfate;
the nano titanium dioxide: nano calcium carbonate: the particle size ratio of the nano barium sulfate is (5-9): (2-3): 1.
by adopting the technical scheme, the nanometer titanium dioxide, the reflective particles and the organic ultraviolet absorbent in the protective sleeve are mutually cooperated, when ultraviolet radiation is carried out, the nanometer titanium dioxide and the organic ultraviolet absorbent absorb ultraviolet rays, and the organic absorption is matched with the inorganic absorption, so that the ultraviolet absorption effect is improved; the application limits the particle diameter of the reflective particles to be smaller than that of the nano titanium dioxide, so that the ultraviolet rays irradiated on the light-facing surface of the reflective particles are smoothly reflected to the circumferential surface of the nano silicon dioxide, the non-light-facing surface of the nano titanium dioxide can absorb the ultraviolet rays, the utilization rate of the nano titanium dioxide is improved, the absorption effect of the ultraviolet rays is improved, and the aging effect of the ultraviolet rays on the protective sleeve is weakened. In addition, the expandable graphite has a porous structure, and the nano titanium dioxide, the reflective particles and the organic ultraviolet absorbent are adsorbed, so that the reflective particles are combined with the nano titanium dioxide and the organic ultraviolet absorbent, more ultraviolet rays reflected by the reflective particles can reach the nano titanium dioxide and the organic ultraviolet absorbent to be absorbed, and the ultraviolet absorption effect is further improved. In addition, the expandable graphite has good heat conducting performance, heat generated by the wire core can be transferred outside the protective layer, the accumulation of the heat in the protective layer is reduced, the aging of the protective layer is further slowed down, and the service life of the cable is prolonged.
The nanometer calcium carbonate has strong ultraviolet absorption and scattering capability, the barium sulfate is white powder with high reflectivity, low scattering rate and neutral reflectivity, the neutral reflectivity of the barium sulfate means that the barium sulfate can effectively reflect light rays with various colors without deviation on the colors, the nanometer calcium carbonate and the nanometer barium sulfate have different reflecting effects on ultraviolet rays, and the nanometer calcium carbonate and the nanometer barium sulfate with different particle sizes are adopted to carry out different multistage reflection on the ultraviolet rays, so that the ultraviolet rays can be reflected to nanometer titanium dioxide and an organic ultraviolet absorber to be absorbed.
In addition, when the protective sleeve is ignited, the high temperature causes the expandable graphite to expand and gasify, absorb a large amount of heat, and the expanded graphite becomes worm-shaped with low density after expansion, so as to form an expanded carbon layer and prevent flame spread.
Preferably, the weight ratio of the nano titanium dioxide to the reflective particles is (1.6-2.5): 1.
by adopting the technical scheme, the proportion of the nano titanium dioxide to the reflective particles is controlled, and the reflective particles and the nano titanium dioxide act synergistically to play a larger effect within the proportion range defined by the application, and the ultraviolet rays reflected by the reflective particles are absorbed by the nano titanium dioxide, so that a relatively better absorption effect is achieved; if the content of the nano titanium dioxide is too much, the nano titanium dioxide can shield the reflective particles, the reflective effect of the reflective particles on ultraviolet rays is reduced, the absorption of the non-light-facing surface of the nano titanium dioxide on the ultraviolet rays is reduced, and the utilization rate of the nano titanium dioxide is small.
Preferably, in the reflective particles, the weight ratio of nano calcium carbonate to nano barium sulfate is (1-3).
By adopting the technical scheme, the particle size and the dosage ratio of the nano calcium carbonate and the nano barium sulfate are controlled, different multi-stage reflections are carried out on ultraviolet rays, and the ultraviolet rays are ensured to be reflected to the nano titanium dioxide and absorbed by the organic ultraviolet absorbent.
Preferably, the nano titanium dioxide is modified nano titanium dioxide subjected to surface treatment of perfluoroalkanes.
The nanometer titanium dioxide has stronger photocatalytic activity and can generate an activated substance after absorbing ultraviolet rays, the activated substance can promote organic matters such as polymer base materials to degrade and influence the service life of a protective sleeve, by adopting the technical scheme, the nanometer titanium dioxide is subjected to surface wrapping treatment by using perfluoroalkanes, wherein the perfluoroalkanes are organic compounds of which hydrogen connected with carbon atoms in organic compound molecules is replaced by fluorine, and because fluorine is the element with the largest electronegativity, the perfluoroalkanes have stronger surface activity due to the introduction of fluorine atoms, the perfluoroalkanes are wrapped outside the nanometer titanium dioxide, and after the nanometer titanium dioxide absorbs ultraviolet rays, the perfluoroalkanes replace the nanometer titanium dioxide to be activated and activated to replace the polymer base materials to be degraded, so that the service life of the cable is effectively prolonged.
Preferably, 30-50 parts of lauric acid and 20-35 parts of hydrated salt are also included.
By adopting the technical scheme, lauric acid is an organic phase change material, the phase change material has the characteristics of high latent heat, high heat storage capacity, low volume expansion rate and the like, the hydrated salt is an inorganic phase change material, the phase change material is formed by absorbing lauric acid and the hydrated salt by the expandable graphite, the nano calcium carbonate is used as a nucleating agent of the phase change material, the heat conducting performance of the expandable graphite is improved, more heat generated by a wire core is transferred to the outside of the protective layer, the heat accumulation in the protective layer is reduced, the ageing of the protective layer is further slowed down, and the service life of an extension cable is prolonged.
Preferably, the preparation method of the organic ultraviolet absorber comprises the following steps:
complexing tea polyphenol with metal ions to obtain tea polyphenol metal ion complex, and complexing tea polyphenol metal ion complex with phenylphosphoric acid to obtain the organic ultraviolet absorbent.
By adopting the technical scheme, the tea polyphenol and the phenylphosphoric acid are combined through the complexing reaction of metal ions, and both the tea polyphenol and the phenylphosphoric acid have benzene ring structures, so that ultraviolet rays can be effectively absorbed. In addition, the tea polyphenol contains abundant pyrogallol groups, can be adhered to the surfaces of various matrixes and the surfaces of the expandable graphite, and improves the binding force of the organic ultraviolet absorbent and the expandable graphite.
In a second aspect, the application provides a preparation method of an anti-aging cable protective sleeve, which adopts the following technical scheme:
the preparation method of the anti-aging cable protective sleeve comprises the following steps of:
s1, melting and extruding 50-60% of polymer base materials according to parts by weight to obtain an inner layer;
s2, absorbing an organic ultraviolet absorbent by the expandable graphite;
s3, absorbing nano titanium dioxide and reflective particles by the expandable graphite after absorbing the organic ultraviolet absorbent, and optionally ultrasonically mixing lauric acid and hydrated salt to obtain a mixture;
s4, melting and blending the residual polymer base material with the mixture obtained in the step S2, and extruding and forming to obtain an outer layer;
s5, bonding the inner layer and the outer layer to obtain the protective sleeve.
Through adopting above-mentioned technical scheme, divide into inlayer and outer two-layer with the protective sheath, add expandable graphite, nanometer titanium dioxide, reflection granule, organic ultraviolet absorbent etc. in the outer, can just absorb the ultraviolet ray when ultraviolet ray gets into the protective sheath, reduce the ageing effect of ultraviolet ray to the protective sheath.
The expandable graphite adsorbs the organic ultraviolet absorbent first and then adsorbs the nano titanium dioxide and the reflective particles, so that the nano titanium dioxide and the reflective particles are outside the organic ultraviolet absorbent, most of ultraviolet rays are absorbed by the nano titanium dioxide first, and then a part of ultraviolet rays reflected by the reflective particles are absorbed by the organic ultraviolet absorbent by the nano titanium dioxide, thereby improving the ultraviolet absorption effect, reducing the photodegradation effect of the ultraviolet rays on the organic ultraviolet absorbent and prolonging the action time of the organic ultraviolet absorbent.
In a third aspect, the present application provides an aging-resistant cable, which adopts the following technical scheme:
the anti-aging cable comprises a cable core, wherein an insulating layer and a protective sleeve are sequentially wrapped outside the cable core, and the protective sleeve is any anti-aging cable protective sleeve;
a plurality of expansion joints are arranged on the insulating layer; each expansion joint does not penetrate through the insulating layer along the circumferential direction of the wire core and penetrates through the insulating layer along the radial direction of the wire core; two adjacent expansion joints are arranged in a staggered way.
By adopting the technical scheme, the heat generated by the wire core is firstly transferred to the insulating layer, the insulating layer is heated to expand, the expansion joint is arranged to provide space for thermal expansion of the insulating layer, and the expansion joint penetrates through the insulating layer along the radial direction of the wire core, so that the heat generated by a cable opposite to the expansion joint is directly transferred to the protective sleeve through the expansion joint, and the heat acting on the insulating layer is reduced; the expansion joint does not penetrate through the insulating layer along the circumferential direction of the wire core, and the adjacent two expansion joints are arranged in a staggered manner, so that enough deformation space is provided for the insulating layer in the axial direction, the axial direction and the radial direction of the insulating layer, the probability of damage of the insulating layer due to thermal expansion is reduced, and the service life of the extension cable is prolonged.
Preferably, a plurality of heat conducting blocks are arranged in the insulating layer, and extend into the expansion joint from the insulating layer and then extend into the protective sleeve.
Through adopting above-mentioned technical scheme, the heat conduction piece is the metal piece, and the heat transfer rate of heat conduction piece is greater than the insulating layer, and the heat in the insulating layer passes through the heat conduction piece and transmits to the expansion joint in to in the protective sheath along with the heat conduction piece direct transfer, further reduce the heat and store up in the protective sheath inside, delay the ageing of cable.
In summary, the application has the following beneficial effects:
1. because the application adopts the nano calcium carbonate and the nano barium sulfate to compound with different particle sizes as the reflective particles, the ultraviolet rays are reflected to the circumferential surface of the nano titanium dioxide, so that the non-light-receiving surface of the nano titanium dioxide can absorb the ultraviolet rays, the utilization rate of the nano titanium dioxide is improved, the absorption effect of the ultraviolet rays is improved, and the aging effect of the ultraviolet rays on the protective sleeve is weakened.
2. According to the application, the heat conducting block is preferably adopted, so that heat generated by the wire core is transferred into the protective sleeve, the accumulation of the heat in the protective sleeve is reduced, the ageing of the protective sleeve is further slowed down, and the service life of the cable is prolonged.
Drawings
The application will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a cross-sectional view of a cable according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the structure of a heat conducting block;
fig. 3 is a cross-sectional view showing the heat conduction block.
In the figure: 1. a wire core; 2. an insulating layer; 21. an expansion joint; 22. a heat conduction block; 3. a shielding layer; 4. a protective sleeve; 41. an inner layer; 42. an outer layer.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation examples of starting materials and intermediates
Raw materials
The raw materials of the embodiment of the application can be obtained by the market:
the polymer base material is high-density polyethylene, the melt flow rate is 7.25 percent, and the tensile strength is 25MP;
a cross-linking agent, namely di-tert-butyl diisopropyl benzene peroxide, wherein the active oxygen content is 9.45 percent and the concentration is 3.5 percent;
a lubricant, oleamide;
expandable graphite having a particle size of 250-300 μm and an expansion ratio of 150ml/g;
perfluoroalkanes, 1H-perfluorohexane;
the hydrated salt is disodium hydrogen phosphate dodecahydrate and is analytically pure;
tea polyphenol with purity of 98%;
phenyl phosphoric acid with 99% purity.
Preparation example
Preparation example 1
A preparation method of the modified nano titanium dioxide comprises the following steps:
3.2kg of perfluoroalkyl is added into 8L of ethanol, stirred and mixed for 30min to obtain a mixed solution, then 0.8kg of nano titanium dioxide is added into the mixed solution, ultrasonic treatment is carried out for 30min, and then the modified nano titanium dioxide is obtained after drying for 1h at 50 ℃.
Preparation example 2
An organic ultraviolet absorbent, its preparation method is:
1) Dissolving 0.5kg of tea polyphenol in 50L of water to obtain a tea polyphenol solution; 3kg of ferric sulfate is dissolved in 50L of water to obtain ferric sulfate solution;
2) Mixing the tea polyphenol solution with the ferric sulfate solution, stirring and reacting for 5 hours at the temperature of 27 ℃, filtering to obtain a fixed object, and washing with deionized water to obtain tea polyphenol iron;
3) 2.5kg of phenylphosphoric acid was dissolved in 50L of water to obtain a phenylphosphoric acid solution;
4) Dispersing 2.5kg of tea polyphenol iron in water, then adding phenyl phosphoric acid solution, stirring at 27 ℃ for reaction for 5 hours, filtering to obtain a fixed object, and washing with deionized water to obtain the tea polyphenol-iron-phenyl phosphoric acid organic ultraviolet absorber.
Examples
Example 1
Referring to fig. 1-3, an aging-resistant cable comprises a cable core 1, wherein an insulating layer 2, a shielding layer 3 and a protective sleeve 4 are sequentially wrapped outside the cable core 1, the cable core 1 is an aluminum alloy cable core 1, the insulating layer 2 is a polyethylene insulating layer 2, the shielding layer 3 is metallized paper serving as an inner shielding layer 3, a braided copper wire belt serving as a shielding layer 3 of an outer shielding layer, and a plurality of expansion joints 21 are formed in the insulating layer 2; each expansion joint 21 does not penetrate through the insulating layer 2 along the circumferential direction of the wire core 1, and penetrates through the insulating layer 2 along the radial direction of the wire core 1; adjacent two expansion joints 21 are arranged in a staggered way; a plurality of heat conducting blocks 22 are arranged in the insulating layer 2, the heat conducting blocks 22 are arranged corresponding to the expansion joints 21, and the heat conducting blocks 22 extend into the expansion joints 21 from the inside of the insulating layer 2 and then extend into the protective sleeve 4; the protective sleeve 4 comprises an inner layer 41 and an outer layer 42, the inner layer 41 is abutted with the shielding layer 3, and the heat conducting block 22 extends into the outer layer 42.
The protective sleeve 4 is an anti-aging cable protective sleeve 4, and the preparation method comprises the following steps:
s1, according to the raw material proportion of the table 1, weighing 60% of polymer base stock, crosslinking agent and lubricant according to the weight ratio, namely 60kg of polymer base stock, 2.4kg of crosslinking agent and 0.9kg of lubricant; melting the polymer base material at 200 ℃, adding a cross-linking agent and a lubricant, mixing for 10min at 40 ℃ to obtain an inner layer 41 blend, and extruding and molding the inner layer 41 blend to obtain an inner layer 41;
s2, ultrasonically mixing expandable graphite with an organic ultraviolet absorbent according to the raw material ratio of the table 1, wherein the expandable graphite absorbs the organic ultraviolet absorbent;
s3, ultrasonically mixing the expandable graphite obtained in the S2 and adsorbed with the organic ultraviolet absorbent with nano titanium dioxide and reflective particles to obtain a mixture;
s4, melting the residual polymer base material at 200 ℃, adding the residual cross-linking agent, the lubricant and the mixture obtained in S3, mixing for 10min at 40 ℃ to obtain an outer layer 42 blend, and extruding the outer layer 42 blend to obtain an outer layer 42;
s5, bonding the inner layer 41 and the outer layer 42 to obtain the protective sleeve 4.
Examples 2 to 5
The difference from example 1 is that the raw material ratio of the anti-aging cable protective sleeve is different, and the details are shown in table 1, wherein in step S1, 60% of polymer base material, crosslinking agent and lubricant are weighed.
Table 1 examples 1-5 raw materials proportioning table (kg)
Wherein the organic ultraviolet absorber is from preparation example 2, nanometer titanium dioxide: nano calcium carbonate: the particle size ratio of the nano barium sulfate is 5:3:1, the particle size of the nano titanium dioxide is 90nm, the particle size of the nano calcium carbonate is 54nm, and the particle size of the nano barium sulfate is 18nm.
Example 6
Unlike example 2, the nano titania of example 6: nano calcium carbonate: the particle size ratio of the nano barium sulfate is 9:2:1, the particle size of the nano titanium dioxide is 90nm, the particle size of the nano calcium carbonate is 20nm, and the particle size of the nano barium sulfate is 10nm.
Example 7
Unlike example 2, the nano titania of example 6: nano calcium carbonate: the particle size ratio of the nano barium sulfate is 6:3:1, the particle size of the nano titanium dioxide is 90nm, the particle size of the nano calcium carbonate is 45nm, and the particle size of the nano barium sulfate is 15nm.
Example 8
Unlike example 7, the weight ratio of nano calcium carbonate to nano barium sulfate in example 8 was 2:1.
Example 9
Unlike example 7, the weight ratio of nano calcium carbonate to nano barium sulfate in example 9 was 3:1.
Example 10
Unlike example 7, the weight ratio of nano calcium carbonate to nano barium sulfate in example 10 was 5:1.
Example 11
Unlike example 7, the weight ratio of nano calcium carbonate to nano barium sulfate in example 11 was 1:2.
Example 12
Unlike example 8, the organic ultraviolet absorber in example 12 was tea polyphenol.
Example 13
Unlike example 8, the organic ultraviolet absorber in example 13 was phenylphosphoric acid.
Example 14
Unlike example 8, the organic ultraviolet absorber in example 14 was a mixture of tea polyphenols and phenylphosphoric acid in a weight ratio of 1:5.
Example 15
Unlike example 8, the nano titania was replaced with an equivalent amount of the modified nano titania from preparation example 1 in example 15.
Example 16
Unlike example 15, example 16 also included 30kg lauric acid and 35kg hydrated salt, the anti-aging cable protective cover was prepared by the following method:
s1, the method is the same as that of the embodiment 8;
s2, the same as in the example 8;
s3, ultrasonically mixing the expandable graphite obtained in the S2 and adsorbed with the organic ultraviolet absorbent with nano titanium dioxide, reflective particles, lauric acid and hydrated salt to obtain a mixture;
s4, the same as in the example 8;
s5. The method is the same as in example 8.
Example 17
Unlike example 16, in example 17, 50 parts of lauric acid and 20 parts of a hydrated salt were used.
Example 18
Unlike example 16, in example 18, lauric acid was 70 parts and a hydrated salt was 0 part.
Example 19
Unlike example 16, in example 19, lauric acid was 0 part and a hydrated salt was 70 parts.
Comparative example
Comparative example 1
Unlike example 1, the nano barium sulfate was replaced with an equivalent amount of nano calcium carbonate, nano titanium dioxide in comparative example 1: the particle size ratio of the nano calcium carbonate is 5:3, the particle size of the nano titanium dioxide is 90nm, and the particle size of the nano calcium carbonate is 54nm.
Comparative example 2
Unlike example 1, the nano calcium carbonate was replaced with an equal amount of nano barium sulfate, nano titanium dioxide in comparative example 2: the particle size ratio of the nano barium sulfate is 5:1, the particle size of the nano titanium dioxide is 90nm, and the particle size of the nano barium sulfate is 18nm.
Comparative example 3
Unlike example 1, the nano titania of comparative example 3: nano calcium carbonate: the particle size ratio of the nano barium sulfate is 1:9:3, the particle size of the nano titanium dioxide is 90nm, the particle size of the nano calcium carbonate is 810nm, and the particle size of the nano barium sulfate is 270nm.
Comparative example 4
Unlike example 1, the reflective particles were replaced with an equal amount of nano titania in comparative example 4.
Comparative example 5
Unlike example 1, the organic ultraviolet absorber was replaced with an equivalent amount of nano titanium dioxide in comparative example 5.
Comparative example 6
Unlike example 1, the nano titania was replaced with the same amount of the organic ultraviolet absorber in comparative example 6.
Performance test
Detection method/test method
Reference is made to section 11 of general test method for insulation and sheathing materials for Cable and optical Cable: general test method thickness and external dimension measurement mechanical property test GB/T2951.11-2008, tensile strength and elongation at break of the protective sleeves obtained in examples and comparative examples were tested;
the cables of the examples and the comparative examples were subjected to a current of 60A, and then reference was made to section 3 of the plastic laboratory light source exposure test method: fluorescent ultraviolet lamp GB-T16422.3-2022, adopting a combination of four ultraviolet lamp assemblies to carry out ultraviolet aging, peeling a protective sleeve after aging treatment for 10 days, and carrying out tensile strength and elongation at break test again;
and (5) calculating an aging retention rate:
tensile strength aging retention = tensile strength after aging/tensile strength before aging x 100%;
retention of fracture strength aging = fracture strength after aging/fracture strength before aging x 100%;
the detection results are shown in Table 2.
TABLE 2 Performance test results
As can be seen from the combination of examples 1 to 19 and comparative examples 1 to 6 and the combination of Table 2, the cables in examples 1 to 19 were subjected to an aging test under ultraviolet irradiation after being electrified, and the tensile strength aging retention and the tensile retention at break were both greater than those of comparative examples 1 to 6, which indicates that the cables prepared by the present application were superior in aging resistance.
In combination with examples 1 and comparative examples 1 to 4, the reflective particles in comparative example 1 were only nano calcium carbonate, the reflective particles in comparative example 2 were only nano barium sulfate, the particle size ratio of the nano titanium dioxide, nano calcium carbonate, and nano barium sulfate in comparative example 3 was outside the range defined by the present application, the reflective particles were not contained in comparative example 4, and it can be seen from table 2 that the cable in example 1 was subjected to an aging test under ultraviolet irradiation after being energized, and both of the tensile strength aging retention and the tensile retention at break were greater than those in comparative examples 1 to 4, which indicated that the reflective particles under the grading of the present application were able to achieve a better aging resistance effect in cooperation with the nano titanium dioxide.
In combination with examples 1 and comparative examples 5 to 6, the nano titanium dioxide and the organic ultraviolet absorbent were compounded in example 1, and only the nano titanium dioxide and the organic ultraviolet absorbent were used in comparative example 1 and comparative example 2, respectively, and it can be seen from table 2 that the cable in example 1 was subjected to an aging test under ultraviolet irradiation after being electrified, both of the tensile strength aging retention and the breaking strength tensile retention were greater than those in comparative examples 1 to 2, the amounts of the nano titanium dioxide and the organic ultraviolet absorbent added in comparative example 1 and comparative example 2 were equal to the total amounts of the nano titanium dioxide and the organic ultraviolet absorbent in example 1, but the aging resistance of the cable in comparative example 1 and comparative example 2 was still reduced compared with that in example 1, which indicates that the aging resistance of the cable can be improved by compounding the nano titanium dioxide and the organic ultraviolet absorbent.
As can be seen in combination with examples 2 and examples 6-7 and with table 2, nano titania in examples 2 and examples 6-7: nano calcium carbonate: the ratio of the grain size of the nano barium sulfate is different, and the tensile strength aging retention and the tensile retention of the breaking strength are also different, wherein the ratio in the example 7 is more excellent, which is probably because of the nano titanium dioxide: nano calcium carbonate: the particle size of the nanometer barium sulfate is limited, the nanometer calcium carbonate and the nanometer barium sulfate have different reflecting effects on ultraviolet rays, and the nanometer calcium carbonate and the nanometer barium sulfate with different particle sizes are adopted to carry out different multistage reflection on the ultraviolet rays, so that the ultraviolet rays can be reflected to the nanometer titanium dioxide to be absorbed.
As can be seen from the combination of examples 8 and examples 12 to 14 and the combination of Table 2, the cable of example 8 was subjected to an aging test under ultraviolet irradiation after being electrified, and the tensile strength aging retention and the tensile retention at break strength were superior, probably because the combination of tea polyphenol and phenylphosphoric acid, both of which have a benzene ring structure, can effectively absorb ultraviolet rays by a complexation reaction of metal ions, and in addition, the tea polyphenol contains abundant pyrogallol groups, can be adhered to the surfaces of various substrates, and can be adhered to the surfaces of expandable graphite, thereby improving the binding force of the organic ultraviolet absorber and the expandable graphite, and further improving the absorption effect of the organic ultraviolet absorber on ultraviolet rays reflected by reflective particles, and improving the aging resistance effect.
By combining the embodiments 15-19 and combining the table 2, it can be seen that the addition of lauric acid and hydrated salt can further improve the ageing-resistant effect of the cable, which is probably because the composite phase-change material of lauric acid and hydrated salt can improve the heat conducting property of the expandable graphite, more heat generated by the wire core is transferred to the outside of the protective layer, the heat accumulation in the protective layer is reduced, the ageing of the protective layer is further slowed down, and the service life of the cable is prolonged.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (6)
1. The anti-aging cable protective sleeve is characterized by comprising the following raw materials in parts by weight: 100-200 parts of polymer base stock, 25-40 parts of expandable graphite, 5-10 parts of nano titanium dioxide, 3-5 parts of reflective particles and 4-8 parts of organic ultraviolet absorbent;
the reflective particles comprise nano calcium carbonate and nano barium sulfate;
the nano titanium dioxide: nano calcium carbonate: the particle size ratio of the nano barium sulfate is (5-9): (2-3): 1, a step of;
the weight ratio of the nano titanium dioxide to the reflective particles is (1.6-2.5): 1, a step of;
in the reflective particles, the weight ratio of the nano calcium carbonate to the nano barium sulfate is (1-3): 1, a step of;
the preparation method of the organic ultraviolet absorber comprises the following steps:
complexing tea polyphenol with metal ions to obtain a tea polyphenol metal ion complex, and complexing the tea polyphenol metal ion complex with phenylphosphoric acid to obtain an organic ultraviolet absorbent;
the particle size of the nano titanium dioxide is 90nm.
2. The aging-resistant cable protective cover according to claim 1, wherein the nano titanium dioxide is modified nano titanium dioxide subjected to surface treatment of perfluoroalkanes.
3. The aging resistant cable protective cover according to claim 1, further comprising 30-50 parts of lauric acid and 20-35 parts of hydrated salt.
4. A method for preparing the anti-aging cable protective cover as claimed in any one of claims 1 to 3, comprising the following steps:
s1, melting and extruding 50-60% of polymer base materials according to parts by weight to obtain an inner layer (41);
s2, absorbing an organic ultraviolet absorbent by the expandable graphite;
s3, absorbing nano titanium dioxide and reflective particles by the expandable graphite after absorbing the organic ultraviolet absorbent, and optionally ultrasonically mixing lauric acid and hydrated salt to obtain a mixture;
s4, melting the residual polymer base material, adding the mixture obtained in the step S3, blending and extrusion molding to obtain an outer layer (42);
s5, bonding the inner layer (41) and the outer layer (42) to obtain the protective sleeve (4).
5. An anti-aging cable is characterized by comprising a cable core (1), wherein an insulating layer (2) and a protective sleeve (4) are sequentially wrapped outside the cable core (1), and the protective sleeve (4) is the anti-aging cable protective sleeve (4) according to any one of claims 1-3;
a plurality of expansion joints (21) are formed on the insulating layer (2); each expansion joint (21) does not penetrate through the insulating layer (2) along the circumferential direction of the wire core (1), and penetrates through the insulating layer (2) along the radial direction of the wire core (1); two adjacent expansion joints (21) are arranged in a staggered way.
6. An anti-ageing cable according to claim 5, wherein a plurality of heat conducting blocks (22) are arranged in the insulating layer (2), and the heat conducting blocks (22) extend into the expansion joint (21) from the inside of the insulating layer (2) and then extend into the protective sleeve (4).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101899260A (en) * | 2010-04-28 | 2010-12-01 | 唐山市思远涂料有限公司 | Paint for train body surface of high speed train |
| CN209297785U (en) * | 2019-01-30 | 2019-08-23 | 上海新时达线缆科技有限公司 | Adaptive elevator cable and CA cable assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899260A (en) * | 2010-04-28 | 2010-12-01 | 唐山市思远涂料有限公司 | Paint for train body surface of high speed train |
| CN209297785U (en) * | 2019-01-30 | 2019-08-23 | 上海新时达线缆科技有限公司 | Adaptive elevator cable and CA cable assembly |
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| Title |
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| TiO_2光催化活性向可见光区拓展的研究进展;童海霞;陈启元;胡慧萍;尹周澜;李洁;;功能材料(09) * |
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