CN110718321A - High temperature resistant strenghthened type cable that blocks water - Google Patents
High temperature resistant strenghthened type cable that blocks water Download PDFInfo
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- CN110718321A CN110718321A CN201910974301.7A CN201910974301A CN110718321A CN 110718321 A CN110718321 A CN 110718321A CN 201910974301 A CN201910974301 A CN 201910974301A CN 110718321 A CN110718321 A CN 110718321A
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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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
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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
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Abstract
The invention discloses a high-temperature-resistant reinforced water-blocking cable which comprises a cable core, wherein the cable core comprises a plurality of insulating wire cores, gaps among the insulating wire cores are filled and rounded through fillers, each insulating wire core comprises a conductor, a first water-blocking non-woven fabric is wrapped outside the conductor, a reinforced water-blocking non-woven fabric is wrapped outside the cable core and the fillers, the reinforced non-woven fabric is composed of a second water-blocking non-woven fabric, a high-temperature-resistant insulating adhesive and a high-temperature-resistant polyester film, the high-temperature-resistant insulating adhesive is prepared by adopting a special formula and a preparation method, and a modified material is. Compared with the prior art, the high-temperature-resistant reinforced water-blocking cable obtained by the technical scheme has excellent high-temperature resistance and water resistance, and is suitable for being used in special environments.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-temperature-resistant reinforced water-blocking cable.
Background
Along with the expansion of cities, high-rise buildings, hotels, supermarkets, hospitals, stations and airports are continuously increased, the construction of subways and tunnel traffic, the increase of large-scale public sports, entertainment places and public traffic facilities, coal mines, chemical engineering, petroleum, medicines, military, nuclear power stations, steel, metallurgy, mines, ships and warships and the like have prominent importance of fire prevention and waterproof safety, how to ensure the smoothness of electric power and communication in a certain time under the conditions of rainwater weather, high temperature and fire, win precious rescue time to the maximum extent, reduce the casualties of personnel and the safety of life and property, and greatly depend on the performance of used cables.
In addition to the premise of ensuring the basic insulation and mechanical properties of the cable are sufficient, it is also necessary to satisfy high temperature resistance in a high temperature environment and water resistance in thunderstorm weather. Therefore, it is urgently needed to design such a high-performance cable with comprehensive performance meeting the requirement.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) of the prior art, and provides a high-temperature-resistant reinforced water-blocking cable which not only has the mechanical strength and insulation requirements of a common cable, but also has excellent high-temperature resistance and water resistance, and can meet the long-term performance stability in a special environment.
The technical scheme adopted by the invention is as follows:
a high-temperature-resistant reinforced water-blocking cable comprises a cable core, wherein the cable core comprises a plurality of insulating wire cores, gaps among the insulating wire cores are filled and rounded through fillers, each insulating wire core comprises a conductor, a first water-blocking non-woven fabric is wrapped outside the conductor, reinforced water-blocking non-woven fabrics are wrapped outside the cable core and the fillers, and each reinforced non-woven fabric consists of a second water-blocking non-woven fabric, a high-temperature-resistant insulating adhesive and a high-temperature-resistant polyester film;
the high-temperature-resistant insulating glue comprises high-melting-point amorphous oxide glass powder, a curing agent and a liquid organic silicon polymer or a solution of the organic silicon polymer, wherein the organic silicon polymer is poly-element organosiloxane or modified polyorganosiloxane, the poly-element organosiloxane is poly-organic boron siloxane, poly-organic aluminum siloxane, poly-organic titanium siloxane or poly-organic phosphorus siloxane, the modified polyorganosiloxane is acrylate modified silicone resin, epoxy modified silicone resin, phenolic aldehyde modified silicone resin or polyurethane modified silicone resin, and the amorphous oxide glass is borate glass, phosphate glass or vanadate glass;
the high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 75-90% of PEN slices, 15-20% of PET slices and 5% of PET opening agent master batch; the core layer comprises the following components in percentage by weight: 60-80% of PEN slices, 30-50% of PET slices and 2-8% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 10-20% of modified montmorillonite and 80-90% of PET.
The high temperature resistant insulating glue used in the invention is prepared by adding low melting point glass powder into heat resistant organic silicon polymer adhesive to prepare colloidal suspension, and then hot pressing, pultrusion or compression molding is carried out on the colloidal suspension and glass fiber like organic polymer adhesive. The melting temperature range of the low-melting-point glass powder is controlled to be between 250 ℃ and 600 ℃, when the insulating material works at the temperature below 250 ℃, the heat-resistant organic silicon polymer adhesive acts, when the temperature is higher than 250 ℃, the high-temperature-resistant organic silicon polymer adhesive starts to decompose, but the low-melting-point glass powder starts to melt, and the replacement polymer continues to act as an adhesive, so that the high-temperature-resistant insulating adhesive still has viscosity at 600 ℃. In addition, because the high-temperature resistant organic silicon polymer is selected, silicon oxide is obtained after the polymer is oxidized, the silicon oxide can be fused with the low-melting-point glass powder, carbon deposition is avoided, and the insulating property of the material is not influenced.
Adding a modified montmorillonite master batch into the high-temperature-resistant polyester film to obtain a high-temperature-resistant polyester film with excellent performance; in addition, the three-layer structure of the polyester film comprises PEN and PET, the PEN/PET can generate transesterification reaction when being melted and blended in an extruder, and the transesterification reaction degree is larger along with the increase of extrusion time and extrusion temperature. The glass transition temperature of PEN is higher than that of PET, the PEN content in the film is increased, the glass transition temperature of the film can be increased, the heat resistance of the film is further improved, and the heat shrinkage rate is reduced.
The high-temperature-resistant reinforced water-blocking cable provided by the invention is characterized in that a first water-blocking non-woven fabric and a reinforced water-blocking non-woven fabric are respectively adopted at different structural positions, the reinforced water-blocking non-woven fabric is a basic second water-blocking non-woven fabric, and a high-temperature-resistant insulating adhesive is compounded with a high-temperature-resistant polyester film, so that the mechanical properties of the non-woven fabrics, the high-temperature insulation property of the high-temperature-resistant insulating adhesive and the excellent comprehensive properties of the high-temperature-resistant insulating film are integrated, the cable has excellent high-temperature usability, and meanwhile, the excellent.
As a preferable mode, the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 1.05 to 1: 2.
preferably, the mass of the curing agent added to each mass part of the silicone polymer is 0.003-0.02. Specifically, different curing agents are correspondingly used when different organosilicon polymers are used.
As a preferable scheme, the modified montmorillonite is prepared by modifying an organic modifier of octadecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, polyvinyl alcohol 4000 or polyvinyl alcohol 10000.
As a preferable scheme, the PET opening agent master batch mainly adopts the following components in percentage by weight: 1-5% of silicon dioxide and 95-99% of PET.
As a preferable scheme, the filler is a water-blocking polypropylene tearing rope filler.
As a preferable scheme, the first water-blocking non-woven fabric and the second water-blocking non-woven fabric are made of the same material and are polyethylene film layers reinforced by glass fibers. According to the cable structure, the first water-blocking non-woven fabric is made of the common glass fiber reinforced polyethylene film instead of the reinforced water-blocking non-woven fabric, the first water-blocking non-woven fabric positioned outside the conductor is positioned inside the cable structure, other protective layers are arranged on the periphery of the cable structure, the performance requirements of the cable structure are not high when the cable structure is positioned outside the cable core and the filler, and therefore the cost can be effectively saved while the performance is met.
As a preferable scheme, the cable core and the filler are sequentially coated with a reinforced water-blocking non-woven fabric, a halogen-free flame-retardant glass fiber tape, a mica tape fire-resistant layer, a stainless steel tape armoring layer and a modified composite high polymer sheath layer from inside to outside.
As a preferable scheme, the modified composite high polymer sheath layer is a polyolefin kaolin nanocomposite.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a high-temperature-resistant reinforced water-blocking cable which comprises a cable core, wherein the cable core comprises a plurality of insulating wire cores, gaps among the insulating wire cores are filled and rounded through filling materials, each insulating wire core comprises a conductor, a first water-blocking non-woven fabric is coated outside the conductor, the cable core and the filler are coated with reinforced water-blocking non-woven fabrics, the reinforced non-woven fabrics consist of second water-blocking non-woven fabrics, high-temperature-resistant insulating glue and high-temperature-resistant polyester films, the high-temperature-resistant reinforced water-blocking cable prepared by the invention has excellent high-temperature resistance and water resistance and is suitable for being used in special environments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a high temperature resistant strenghthened type cable that blocks water, including the cable core, the cable core includes a plurality of insulation core, and the clearance passes through the stopping to fill the rounding between the insulation core, and every insulation core includes the conductor, and the conductor outsourcing is equipped with the first non-woven fabrics that blocks water, the outer cladding of cable core and stopping has the strenghthened type non-woven fabrics that blocks water, the strenghthened type non-woven fabrics comprises the second non-woven fabrics that blocks water, high temperature resistant insulating glue and high.
The high-temperature-resistant insulating glue comprises high-melting-point amorphous oxide glass powder, a curing agent and a liquid organic silicon polymer or a solution of the organic silicon polymer, wherein the organic silicon polymer is a poly-element organosiloxane, the poly-element organosiloxane is poly-organic boron siloxane, and the amorphous oxide glass is borate glass.
The high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 75% PEN chip, 20% PET chip, and 5% PET opener masterbatch; the core layer comprises the following components in percentage by weight: 65% of PEN slices, 30% of PET slices and 5% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 10% of modified montmorillonite and 90% of PET.
As a preferable mode, the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 1.1.
as a preferable mode, the mass of the curing agent added per mass part of the silicone polymer is 0.005. Specifically, a polysilazane crosslinking agent HK-CL is used as a curing agent.
As a preferable scheme, the modified montmorillonite is prepared by modifying an organic modifier of octadecyl trimethyl ammonium chloride.
As a preferable scheme, the PET opening agent master batch mainly adopts the following components in percentage by weight: 3% silica and 97% PET.
As a preferable scheme, the filler is a water-blocking polypropylene tearing rope filler.
As a preferable scheme, the first water-blocking non-woven fabric and the second water-blocking non-woven fabric are made of the same material and are polyethylene film layers reinforced by glass fibers.
As a preferable scheme, the cable core and the filler are sequentially coated with a reinforced water-blocking non-woven fabric, a halogen-free flame-retardant glass fiber tape, a mica tape fire-resistant layer, a stainless steel tape armoring layer and a modified composite high polymer sheath layer from inside to outside.
As a preferable scheme, the modified composite high polymer sheath layer is a polyolefin kaolin nanocomposite.
Example 2
The difference between this embodiment and embodiment 1 is that the high temperature-resistant insulating glue includes a high melting point amorphous oxide glass powder, a curing agent, and a solution of an organosilicon polymer, where the organosilicon polymer is a modified polyorganosiloxane, the modified polyorganosiloxane is an acrylate modified silicone resin, and the amorphous oxide glass is phosphate glass.
The high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 90% PEN chip, 5% PET chip, and 5% PET opener masterbatch; the core layer comprises the following components in percentage by weight: 60% of PEN slices, 32% of PET slices and 8% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 12% of modified montmorillonite and 88% of PET.
As a preferable mode, the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 1.5.
as a preferable mode, the mass of the curing agent added per mass part of the silicone polymer is 0.01. Specifically, triethylene glycol diamine is used as the curing agent.
As a preferable scheme, the modified montmorillonite is prepared by modifying an organic modifier of cetyl trimethyl ammonium bromide.
As a preferable scheme, the PET opening agent master batch mainly adopts the following components in percentage by weight: 1% silica and 99% PET.
Example 3
The present example is different from example 1 in that the high temperature-resistant insulating paste includes a high melting point amorphous oxide glass powder, a curing agent, and a solution of an organosilicon polymer, the organosilicon polymer is a poly-element organosiloxane, the poly-element organosiloxane is a poly-organoaluminum siloxane, and the amorphous oxide glass is vanadate glass.
The high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 79% PEN chip, 16% PET chip and 5% PET opener masterbatch; the core layer comprises the following components in percentage by weight: 70% of PEN slices, 27% of PET slices and 3% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 15% of modified montmorillonite and 85% of PET.
As a preferable mode, the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 2.
as a preferable mode, the mass of the curing agent added per mass part of the silicone polymer is 0.02. Specifically, ammonia water with a concentration of 25 wt% was used as the curing agent.
As a preferable scheme, the modified montmorillonite is prepared by modifying an organic modifier of polyvinyl alcohol 4000.
As a preferable scheme, the PET opening agent master batch mainly adopts the following components in percentage by weight: 5% silica and 95% PET.
Example 4
The difference between the embodiment and the embodiment 1 is that the high-temperature-resistant insulating glue comprises high-melting-point amorphous oxide glass powder, a curing agent and a liquid organic silicon polymer, wherein the organic silicon polymer is modified polyorganosiloxane, the modified polyorganosiloxane is organophosphorus siloxane, and the amorphous oxide glass is phosphate glass.
The high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 85% of PEN slices, 15-20% of PET slices and 5% of PET opening agent master batch; the core layer comprises the following components in percentage by weight: 60-80% of PEN slices, 30-50% of PET slices and 2-8% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 10-20% of modified montmorillonite and 80-90% of PET.
As a preferable mode, the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 1.8.
as a preferable mode, the mass of the curing agent added per mass part of the silicone polymer is 0.009. Specifically, triethylene glycol diamine is used as the curing agent.
As a preferable scheme, the modified montmorillonite is prepared by modifying an organic modifier of polyvinyl alcohol 10000.
Comparative example 1
The comparative example is different from the example 1 in that the water-blocking non-woven fabric coated outside the cable core and the filling rope is a common water-blocking non-woven fabric which is the same as the first water-blocking non-woven fabric and is a polyethylene film layer reinforced by glass fibers.
Comparative example 2
The comparative example differs from example 1 in that the high temperature resistant polyester film only contains an intermediate core layer, and the core layer comprises the following components in percentage by weight: 70% of PEN slices, 30% of PET slices and 2-8% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 15% of modified montmorillonite and 85% of PET.
Comparative example 3
The comparative example is different from example 1 in that the high-temperature-resistant insulating glue comprises common glass powder, a curing agent and a liquid organic silicon polymer, wherein the organic silicon polymer is modified polysiloxane, and the modified polysiloxane is polyurethane modified silicone resin.
The cables prepared in the embodiments 1 to 4 and the comparative examples 1 to 3 are tested as follows, specifically, the insulation resistance adopts UL1581-920 reference standard, the tensile strength/tensile strength adopts UL1581-470 reference standard, the heat resistance grade adopts GB 755-.
| Item | Insulation resistance/M omega | Tensile/tensile strength/MPa | Heat resistance rating | Water-blocking property |
| Example 1 | 1.23 | 24.56 | Class C | Superior food |
| Example 2 | 1.25 | 25.52 | Class C | Superior food |
| Example 3 | 1.35 | 27.36 | Class C | Superior food |
| Example 4 | 1.30 | 24.58 | Class C | Superior food |
| Comparative example 1 | 0.92 | 22.54 | Class F | Good wine |
| Comparative example 2 | 0.87 | 23.59 | Class F | Good wine |
| Comparative example 3 | 0.93 | 21.50 | Class F | Superior food |
The data show that the cable provided by the invention has higher insulativity, tensile property and tensile resistance compared with comparative examples 1-3, and the heat resistance grade and the water resistance are also higher than those of comparative examples 1-3, which shows that the cable provided by the application has better comprehensive performance. In addition, example 3 has the best performance in view of this combination.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (9)
1. A high-temperature-resistant reinforced water-blocking cable comprises a cable core and is characterized in that the cable core comprises a plurality of insulating wire cores, gaps among the insulating wire cores are filled and rounded through fillers, each insulating wire core comprises a conductor, a first water-blocking non-woven fabric is wrapped outside the conductor, reinforced water-blocking non-woven fabrics are wrapped outside the cable core and the fillers, and each reinforced non-woven fabric is composed of a second water-blocking non-woven fabric, high-temperature-resistant insulating glue and a high-temperature-resistant polyester film;
the high-temperature-resistant insulating glue comprises high-melting-point amorphous oxide glass powder, a curing agent and a liquid organic silicon polymer or a solution of the organic silicon polymer, wherein the organic silicon polymer is poly-element organosiloxane or modified polyorganosiloxane, the poly-element organosiloxane is poly-organic boron siloxane, poly-organic aluminum siloxane, poly-organic titanium siloxane or poly-organic phosphorus siloxane, the modified polyorganosiloxane is acrylate modified silicone resin, epoxy modified silicone resin, phenolic aldehyde modified silicone resin or polyurethane modified silicone resin, and the amorphous oxide glass is borate glass, phosphate glass or vanadate glass;
the high-temperature-resistant polyester film comprises surface layers positioned on an upper layer and a lower layer and a core layer positioned in the middle, wherein the surface layers of the upper layer and the lower layer have the same components and respectively comprise the following components in parts by weight: 75-90% of PEN slices, 15-20% of PET slices and 5% of PET opening agent master batch; the core layer comprises the following components in percentage by weight: 60-80% of PEN slices, 30-50% of PET slices and 2-8% of modified montmorillonite master batch; the modified montmorillonite master batch comprises the following components in percentage by weight: 10-20% of modified montmorillonite and 80-90% of PET.
2. The high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the mass ratio of the organic silicon polymer to the amorphous oxide glass powder is 1: 1.05 to 1: 2.
3. the high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the mass of the curing agent added to each mass part of the organosilicon polymer is 0.003-0.02.
4. The high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the modified montmorillonite is prepared by modifying an organic modifier of octadecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, polyvinyl alcohol 4000 or polyvinyl alcohol 10000.
5. The high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the PET opening agent master batch mainly comprises the following components in percentage by weight: 3% silica and 97% PET.
6. The high temperature resistant reinforced water-blocking cable of claim 1, wherein the filler is a water-blocking polypropylene ripcord filler.
7. The high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the first water-blocking non-woven fabric and the second water-blocking non-woven fabric are made of the same material and are made of glass fiber reinforced polyethylene film layers.
8. The high-temperature-resistant reinforced water-blocking cable according to claim 1, wherein the cable core and the filler are sequentially coated with a reinforced water-blocking non-woven fabric, a halogen-free flame-retardant glass fiber tape, a mica tape fire-resistant layer, a stainless steel tape armor layer and a modified composite polymer sheath layer from inside to outside.
9. The high temperature resistant reinforced water-blocking cable according to claim 8, wherein the modified composite polymer sheath layer is a polyolefin kaolin nanocomposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974301.7A CN110718321A (en) | 2019-10-14 | 2019-10-14 | High temperature resistant strenghthened type cable that blocks water |
Applications Claiming Priority (1)
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| EP4386783A1 (en) * | 2022-12-16 | 2024-06-19 | Nexans | Composite water barrier |
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