CN110982265A - High-toughness flame-retardant power cable and preparation method thereof - Google Patents
High-toughness flame-retardant power cable and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
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- 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
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- 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
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
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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
- H01B7/02—Disposition of insulation
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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
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- 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
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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
- C08L2201/02—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
- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a high-toughness flame-retardant power cable which comprises a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight: 100 parts of polyimide resin; 20-35 parts of polyethylene terephthalate; 14-17 parts of vinyl acetate; 13-16 parts of modified polypropylene resin; 10-12 parts of bisphenol A type epoxy resin; 3-5 parts of boron nitride; 0.1-0.3 part of inorganic nanocrystalline; 0.1-0.5 part of antistatic agent. The high-toughness flame-retardant power cable prepared by the invention has the beneficial effects of strong stability, high flame retardance, wear resistance, corrosion resistance and the like.
Description
Technical Field
The invention relates to the field of power materials, in particular to a high-toughness flame-retardant cable for a power line and a preparation method thereof.
Background
With the rapid development of modern society, the safety of power lines is more and more important. The long-term exposure of the power line to the open air puts higher demands on the physical properties of the cable in the complicated weather. At present, the widely used cable is mainly a silicon rubber cable, although the silicon rubber cable has good heat resistance and cold resistance, the silicon rubber cable has the defects of low strength, easy oxidation, poor toughness and the like, and cannot meet the requirement of long-term stability of a power circuit.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a high-toughness flame-retardant power cable, aiming at the defects in the prior art, wherein the high-toughness flame-retardant power cable comprises a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight:
the polyimide resin is a high polymer with excellent insulating property, has excellent characteristics of good mechanical property, no toxicity, low relative density, heat resistance, easy processing and forming and the like, and can improve the breakdown field strength of a system by compounding with polyethylene terephthalate; the vinyl acetate has the properties of no hydrophilicity and no oleophylicity, can prevent the adhesion of oil stains and water drops, and improves the antifouling and waterproof properties of the insulating layer, thereby improving the sensitivity of fingerprint identification on the surface of the coating; the inorganic nano-whisker increases the compatibility and the bonding force of inorganic molecules and organic molecules, promotes the dispersibility of the film, improves the strength of the film, and the bisphenol A epoxy resin has good insulativity, high temperature resistance, high strength, high modulus, excellent electrical insulativity and mechanical property, and enhances the insulativity of the insulating layer while taking the excellent characteristics of all components into consideration.
Preferably, wherein the modified polypropylene resin comprises the following components by weight:
wherein the mol percentage of the ethylene in the propylene-styrene block copolymer is 15-20%.
The propylene-styrene copolymer is introduced into the polypropylene resin, so that the crystallinity of the polypropylene resin can be reduced, and the impact property, the transparency, the processability and the like can be improved; sorbitol diacetal and titanium dioxide are used as fillers to enhance the surface hardness of the polyacrylic resin; dicumyl peroxide is a cross-linking agent, and can enhance the three-dimensional network structure in the polypropylene resin so as to improve the mechanical strength and the wear resistance; the nano silicon nitride and the octadecyl trimethoxy silane realize organic and inorganic hybridization, and can improve the processing performance of the polypropylene resin.
Preferably, wherein the inorganic nanowhiskers comprise one or more of magnesium borate whiskers, aluminum borate whiskers, calcium sulfate whiskers, or calcium carbonate whiskers.
Preferably, the antistatic agent comprises one or more of alkyl sodium sulfonate, ethoxy lauramide, ethoxy alkyl amine and glycerol stearate.
Preferably, the shielding layer is a latex particle-carbon nanotube composite film.
Preferably, the latex particles comprise at least one of polybutyl acrylate, polystyrene methyl acrylate and polymethyl methacrylate.
Preferably, the protective layer is a three-layer composite structure, and the three-layer composite structure sequentially comprises a waterproof layer, a wear-resistant layer and an anti-corrosion layer from top to bottom.
Preferably, the waterproof layer is a multifunctional polyurethane resin, wherein the multifunctional polyurethane resin comprises at least one of a nine-functional polyurethane resin, a six-functional polyurethane resin and a three-functional polyurethane resin.
Preferably, the wear-resistant layer is a polyurethane elastomer.
Preferably, the corrosion-resistant layer is a zinc-plated silane composite film, wherein the silane comprises at least one of N-aminoethyl-3-aminopropyltrimethoxysilane, 3- (2, 3-epoxypropoxy) propyltrimethoxysilane and diethoxydimethylsilane.
Preferably, the high-toughness flame-retardant power cable is prepared by a melt extrusion process.
The invention has the beneficial effects that: (1) the power cable prepared by the invention has the beneficial characteristics of high strength, high hardness and excellent wear resistance; (2) the insulation layer adopts the synergistic cooperation of polyimide resin, modified acrylic resin and other components, and the prepared cable has excellent insulation performance and high safety through cheap and easily-obtained raw materials.
Detailed Description
Example 1:
the high-toughness flame-retardant power cable comprises a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight:
preferably, wherein the modified polypropylene resin comprises the following components by weight:
wherein the propylene-styrene block copolymer has an ethylene mole percent content of 15%.
The inorganic nano crystal whisker is magnesium borate crystal whisker, the antistatic agent is sodium alkyl sulfonate, and the shielding layer is a polybutyl acrylate latex particle-carbon nano tube composite membrane.
The protective layer is a three-layer composite structure which sequentially comprises a waterproof layer, a wear-resistant layer and an anti-corrosion layer from top to bottom, wherein the waterproof layer is made of multifunctional polyurethane resin, the multifunctional polyurethane resin is nine-functional agglomerated polyurethane resin, the wear-resistant layer is a polyurethane elastomer, and the anti-corrosion layer is a galvanized N-aminoethyl-3-aminopropyltrimethoxysilane composite film.
The high-toughness flame-retardant power cable is prepared by adopting a melt extrusion process.
Example 2:
the high-toughness flame-retardant power cable comprises a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight:
preferably, wherein the modified polypropylene resin comprises the following components by weight:
wherein the propylene-styrene block copolymer has an ethylene mole percent content of 16%.
The inorganic nano crystal whisker is aluminum borate crystal whisker, the antistatic agent is ethoxy ammonium laurate, and the shielding layer is a polystyrene methyl acrylate latex particle-carbon nano tube composite membrane.
The protective layer is of a three-layer composite structure, and the three-layer composite structure sequentially comprises a waterproof layer, a wear-resistant layer and an anti-corrosion layer from top to bottom.
The waterproof layer is made of multifunctional polyurethane resin, wherein the multifunctional polyurethane resin is a mixture of nine-functional-group polyurethane resin and six-functional-group polyurethane resin.
Wherein, the wear-resisting layer is polyurethane elastomer.
Wherein, the corrosion-resistant layer is a galvanized 3- (2, 3-epoxypropoxy) propyl trimethoxy silane composite film.
The high-toughness flame-retardant power cable is prepared by adopting a melt extrusion process.
Example 3:
the high-toughness flame-retardant power cable comprises a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight:
preferably, wherein the modified polypropylene resin comprises the following components by weight:
wherein the ethylene mole percentage content in the propylene-styrene block copolymer is 20%.
The inorganic nano crystal whisker is calcium carbonate crystal whisker, and the antistatic agent is glycerol stearate.
The shielding layer is a polymethyl methacrylate latex particle-carbon nano tube composite film.
The protective layer is of a three-layer composite structure, and the three-layer composite structure sequentially comprises a waterproof layer, a wear-resistant layer and an anti-corrosion layer from top to bottom.
Wherein, the waterproof layer is made of three-functionality polyurethane resin.
Wherein, the wear-resisting layer is polyurethane elastomer.
Wherein, the corrosion-resistant layer is a zinc-plated diethoxy dimethyl silane composite film.
The high-toughness flame-retardant power cable is prepared by adopting a melt extrusion process.
Comparative example 1:
this comparative example is essentially the same as example 1 in terms of raw materials and process, with the only difference that no inorganic nanowhiskers are added.
Comparative example 2:
this comparative example is substantially the same as example 1 in terms of raw materials and process, except that the modified polypropylene resin was changed to a polypropylene resin.
Comparative example 3:
the comparative example was substantially the same as example 1 in terms of raw materials and process, except that the latex particle-carbon nanotube composite film was changed to a carbon nanotube film.
The properties of the products of examples 1-3 and comparative examples 1-3 above are shown in the following table, with the following results of the property tests:
| tensile Strength (MPa) | Elongation at Break (%) | Permeability (%) | Oxygen index (%) | |
| Example 1 | 155 | 149 | 0.5 | 32 |
| Example 2 | 160 | 153 | 0.6 | 27 |
| Example 3 | 154 | 156 | 0.5 | 29 |
| Comparative example 1 | 121 | 126 | 1.7 | 21 |
| Comparative example 2 | 127 | 130 | 1.2 | 25 |
| Comparative example 3 | 128 | 128 | 1.4 | 23 |
And (3) testing tensile strength: the test was carried out using the GB/T528-1998 standard.
Elongation at break test: the test was carried out according to GB/T1701-2001.
And (3) permeability test: testing was performed using an ASTM F1927 permeameter.
And (3) oxygen index test: and a BK-JF-3 oxygen index tester is adopted for testing.
Compared with the comparative example 1, the tensile strength of the example 1 is 155MPa, and the tensile strength of the comparative example 1 is 121MPa, which is because the addition of the inorganic nano-whisker increases the compatibility and the bonding force of inorganic molecules and organic molecules, promotes the dispersibility of the film and improves the strength of the film.
Compared with the comparative example 2, the elongation at break of the polypropylene resin in the embodiment 1 is reduced to 130 from 149, which shows that the polypropylene resin is introduced with the components of propylene-styrene, sorbitol diacetal, titanium dioxide, dicumyl peroxide and the like, and the components are mutually reinforced and supplemented, so that the processability of the polypropylene resin is improved, and the mechanical property of the insulating layer is improved.
Compared with comparative example 3, the permeability of example 1 is increased from 0.5% to 1.7%, which indicates that the latex particle-carbon nanotube composite membrane has better permeability resistance than a single carbon nanotube membrane, thereby improving the water resistance and acid and alkali resistance of the power cable and prolonging the service life of the power cable.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The high-toughness flame-retardant power cable is characterized by comprising a wire core, an insulating layer, a shielding layer and a protective layer, wherein the insulating layer comprises the following components in parts by weight:
2. the high tenacity flame retardant power cable according to claim 1, wherein said modified polypropylene resin comprises the following ingredients by weight:
wherein the mol percentage of the ethylene in the propylene-styrene block copolymer is 15-20%.
3. A high tenacity flame retardant power cable according to claim 1, wherein the inorganic nanowhiskers comprise one or more of magnesium borate whiskers, aluminum borate whiskers, calcium sulfate whiskers, or calcium carbonate whiskers.
4. A high tenacity flame retardant power cable according to claim 1, wherein said antistatic agent comprises a combination of one or more of sodium alkyl sulfonate, ethoxylated amine laurate, ethoxylated amine alkyl, glyceryl stearate.
5. The high tenacity flame retardant power cable of claim 1 wherein the shielding layer is a latex particle-carbon nanotube composite film.
6. The high tenacity flame retardant power cable of claim 5 wherein said latex particles comprise at least one of polybutylacrylate, polystyrene methyl acrylate, polymethyl methacrylate.
7. The high toughness flame retardant power cable according to claim 1, wherein said protective layer is a three-layer composite structure comprising, from top to bottom, a water-proof layer, a wear layer, and an anti-corrosion layer.
8. A high tenacity flame retardant power cable according to claim 7, wherein said water barrier layer is a multifunctional polyurethane resin, wherein said multifunctional polyurethane resin comprises at least one of a nine functional polyurethane resin, a six functional polyurethane resin, a three functional polyurethane resin.
9. A high toughness flame retardant power cable according to claim 7, wherein said wear layer is polyurethane elastomer and said corrosion resistant layer is a galvanized silane composite film, wherein said silane comprises at least one of N-aminoethyl-3-aminopropyltrimethoxysilane, 3- (2, 3-glycidoxy) propyltrimethoxysilane, diethoxydimethylsilane.
10. The method for preparing a high toughness flame retardant power cable according to any one of claims 1 to 9, wherein the high toughness flame retardant power cable is prepared by a melt extrusion process.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944132A (en) * | 2014-04-29 | 2014-07-23 | 国家电网公司 | Modified polypropylene composite tubular product for protecting high-voltage cable |
| CN104240817A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Submarine power cable with insulating composite layer |
| CN106795326A (en) * | 2016-09-05 | 2017-05-31 | 呈和科技股份有限公司 | A kind of transparent nucleater composition comprising the acetal of sorbierite three and monoacetal |
| CN207217174U (en) * | 2016-12-29 | 2018-04-10 | 江苏火凤凰线缆系统技术股份有限公司 | New-energy electric vehicle energy-saving charging cable |
| CN108504023A (en) * | 2018-05-11 | 2018-09-07 | 句容市百事特复合材料有限公司 | A kind of modified polypropylene resin |
-
2019
- 2019-12-08 CN CN201911254417.XA patent/CN110982265B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944132A (en) * | 2014-04-29 | 2014-07-23 | 国家电网公司 | Modified polypropylene composite tubular product for protecting high-voltage cable |
| CN104240817A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Submarine power cable with insulating composite layer |
| CN106795326A (en) * | 2016-09-05 | 2017-05-31 | 呈和科技股份有限公司 | A kind of transparent nucleater composition comprising the acetal of sorbierite three and monoacetal |
| CN207217174U (en) * | 2016-12-29 | 2018-04-10 | 江苏火凤凰线缆系统技术股份有限公司 | New-energy electric vehicle energy-saving charging cable |
| CN108504023A (en) * | 2018-05-11 | 2018-09-07 | 句容市百事特复合材料有限公司 | A kind of modified polypropylene resin |
Non-Patent Citations (1)
| Title |
|---|
| 王文广等: "《聚合物改性原理》", 31 March 2018 * |
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