CN111508669A - Method for preparing transmission cable shielding structure - Google Patents
Method for preparing transmission cable shielding structure Download PDFInfo
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- CN111508669A CN111508669A CN202010322667.9A CN202010322667A CN111508669A CN 111508669 A CN111508669 A CN 111508669A CN 202010322667 A CN202010322667 A CN 202010322667A CN 111508669 A CN111508669 A CN 111508669A
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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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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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
- H01B13/228—After-treatment
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Insulated Conductors (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a method for preparing a transmission cable shielding structure, wherein the method comprises the steps of providing a shielding layer, wherein the shielding layer comprises a metal layer (1) and a PET layer (2) positioned on the metal layer (1); placing a cable conductor (3) at the middle position of the upper side of a PET layer (2), and then folding a shielding layer in half, so that the PET layer (2) is wrapped on the outer side of the cable conductor (3), the edge parts of the wrapped PET layer (2) are overlapped, and the overlapping area accounts for 10-30% of the total area of the PET layer (2); and hot-pressing the folded and stacked materials to bond the two PET layers (2) positioned on the inner layer, thereby obtaining the transmission cable shielding structure. The preparation process of the cable shielding structure is simple, and the obtained shielding structure is good in shielding property, good in sealing performance and excellent in mechanical strength.
Description
Technical Field
The invention relates to a method for preparing a transmission cable shielding structure.
Background
The cable and the connecting piece are externally coated with a metal shielding layer, so that unnecessary electromagnetic waves can be effectively filtered (which is a method adopted by most shielding systems), and for the shielding system, the metal shielding layer is not enough, more importantly, the cable is completely coated with the shielding layer, and the sealing performance, the fire resistance and the aging resistance between the shielding layer and the cable are excellent.
Disclosure of Invention
The invention provides a method for preparing a transmission cable shielding structure, wherein the method comprises the steps of providing a shielding layer, wherein the shielding layer comprises a metal layer (1) and a PET layer (2) positioned on the metal layer (1); placing a cable conductor (3) at the middle position of the upper side of a PET layer (2), and then folding a shielding layer in half, so that the PET layer (2) is wrapped on the outer side of the cable conductor (3), the edge parts of the wrapped PET layer (2) are overlapped, and the overlapping area accounts for 10-30% of the total area of the PET layer (2); and hot-pressing the folded and stacked materials to bond the two PET layers (2) positioned on the inner layer, thereby obtaining the transmission cable shielding structure. The preparation process of the cable shielding structure is simple, and the obtained shielding structure is good in shielding property, good in sealing performance and excellent in mechanical strength.
The specific scheme is as follows:
a method of making a transmission cable shielding structure, wherein the method comprises:
1) providing a shielding layer which is a double-layer laminated structure and comprises a metal layer (1) and a PET layer (2) positioned on the metal layer (1);
2) placing a cable conductor (3) at the middle position of the upper side of the PET layer (2);
3) folding the shielding layer in half so that the PET layer (2) is wrapped on the outer side of the cable conductor (3), and the edge parts of the wrapped PET layer (2) are overlapped;
4) and hot-pressing the folded and stacked materials to bond the two PET layers (2) positioned on the inner layer at the overlapped edge part, thereby obtaining the transmission cable shielding structure.
Furthermore, the PET layer (2) comprises a wrapping part (2.1) located in the middle of the PET layer (2) and bonding parts (2.2) located on two sides of the wrapping part (2.1), the wrapping part (2.1) is in contact with and wraps the cable conductor (3) after the shielding layer is folded in half, and the bonding parts (2.2) on two sides are in mutual overlapping contact after the shielding layer is folded in half; the method comprises the step of coating hot melt glue on the bonding parts (2.2) on the two sides before folding the shielding layer in half.
Further, the wrapping (2.1) consists of the following components: 150 parts of PET resin 130-one, 15-20 parts of polyurethane resin, 20-25 parts of chloroprene rubber, 25-35 parts of glass fiber, 15-20 parts of calcium stearate, 10-15 parts of titanium dioxide, 3-4 parts of strontium aluminate, 3-4 parts of boron nitride, 0.8-1 part of hexadecyl trimethoxy silane and 0.8-1 part of cyclohexyl hexaol phosphate.
Further, the wrapping (2.1) consists of the following components: 140 parts of PET resin, 18 parts of polyurethane resin, 22 parts of chloroprene rubber, 30 parts of glass fiber, 18 parts of calcium stearate, 12 parts of titanium dioxide, 4 parts of strontium aluminate, 4 parts of boron nitride, 0.9 part of hexadecyl trimethoxy silane and 0.9 part of cyclohexyl hexaol phosphate.
Further, the bonding part (2.2) is composed of the following components: 110-130 parts of PET resin, 20-25 parts of epoxy resin, 4-6 parts of pentaerythritol bisdimethyl silicate, 18-22 parts of polybutylene terephthalate, 10-15 parts of maleic anhydride grafted polyethylene, 3-4 parts of diethylene glycol monobutyl ether and 1.5-2 parts of potassium metabisulfite.
Further, the bonding part (2.2) is composed of the following components: 120 parts of PET resin, 22 parts of epoxy resin, 5 parts of pentaerythritol bisdimethyl silicate, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 3 parts of diethylene glycol monobutyl ether and 2 parts of potassium metabisulfite.
Further, the metal of the metal layer (1) is selected from copper or aluminum.
Further, the area of the bonding part accounts for 10-30% of the total area of the PET layer (2).
The invention has the following beneficial effects:
1) this shielding structure only includes two-layer structure, and preparation simple process, outer metal level (1) provide good electromagnetic shield and mechanical properties, and inlayer PET layer (2) have good sealing performance, separate temperature performance and fire behavior, and the shielding structure stable performance who obtains has good mechanical properties and fire-resistant and old-proof performance.
2) The invention has the main invention points that: aiming at different performance requirements of a wrapping part (2.1) and a bonding part, specific components of a corresponding PET layer (2) part are adjusted, the wrapping part (2.1) needs to contact and wrap a cable conductor (3), wherein 15-20 parts by weight of polyurethane resin and 20-25 parts by weight of chloroprene rubber are added to ensure that the wrapping part (2.1) has good elasticity, glass fiber is added to improve the extensibility, 0.8-1 part by weight of hexadecyl trimethoxy silane and 0.8-1 part by weight of cyclohexyl hexaol phosphate are added to wrap a metal conductor which can be sealed after being folded and hot-pressed, 15-20 parts by weight of calcium stearate, 10-15 parts by weight of titanium dioxide, 3-4 parts by weight of strontium aluminate and 3-4 parts by weight of boron nitride have good fire resistance, and inorganic particles in the PET layer (2) can be cured to form a hardened layer at high temperature, thereby improving the fire resistance of the cable.
3) The bonding part needs to have good contact strength with a hot melt material and good sealing performance and high-temperature plasticizing performance, so that 20-25 parts by weight of epoxy resin, 4-6 parts by weight of pentaerythritol bisdimethylsilicate, 18-22 parts by weight of polybutylene terephthalate, 10-15 parts by weight of maleic anhydride grafted polyethylene, 3-4 parts by weight of diethylene glycol monobutyl ether and 1.5-2 parts by weight of potassium metabisulfite are added, so that the bonding part has friendly contact performance with the hot melt material, the sealing performance of the material can be improved after hot pressing, a cable conductor (3) can be sealed after hot pressing and folding, and the aging resistance and the shielding performance of the shielding layer are improved.
4) The components of the wrapping part (2.1) and the bonding part have friendly interface performance to the metal layer (1) and good mechanical connection strength.
Drawings
FIG. 1 shows the structure of the shielding layer before folding
FIG. 2 shows the cable structure after folding and hot pressing
Detailed Description
The present invention will be described in more detail below with reference to specific examples, but the scope of the present invention is not limited to these examples.
The preparation method comprises the following steps:
1) providing a shielding layer which is a double-layer laminated structure and comprises a metal layer (1) and a PET layer (2) positioned on the metal layer (1); the PET layer (2) comprises a wrapping part (2.1) positioned in the middle of the PET layer (2) and bonding parts (2.2) positioned on two sides of the wrapping part (2.1), the wrapping part (2.1) is in contact with and wraps the cable conductor (3) after the shielding layer is folded,
2) placing a cable conductor (3) at a wrapping part (2.1) in the middle of the upper side of the PET layer (2); coating hot melt adhesive on the bonding parts (2.2) at two sides;
3) folding the shielding layer in half so that the wrapping part (2.1) wraps the outer side of the cable conductor (3) and the bonding parts (2.2) on the two sides are overlapped and contacted with each other; (ii) a
4) And (3) putting the folded and stacked shielding layers into a hot press for hot pressing, so that the two PET layers (2) positioned on the inner layer are bonded at the overlapped bonding parts (2.2), thereby obtaining the transmission cable shielding structure.
Example 1
The metal of the metal layer (1) is copper. The area of the bonding part accounts for 10% of the total area of the PET layer (2), and the area of the wrapping part (2.1) accounts for 90% of the total area. The wrapping part (2.1) consists of the following components: 130 parts of PET resin, 15 parts of polyurethane resin, 20 parts of chloroprene rubber, 25 parts of glass fiber, 15 parts of calcium stearate, 10 parts of titanium dioxide, 3 parts of strontium aluminate, 3 parts of boron nitride, 0.8 part of hexadecyl trimethoxy silane and 0.8 part of cyclohexyl hexaol phosphate; the adhesive part (2.2) consists of the following components: 110 parts of PET resin, 20 parts of epoxy resin, 4 parts of pentaerythritol bis (dimethylsilicate), 18 parts of polybutylene terephthalate, 10 parts of maleic anhydride grafted polyethylene, 3 parts of diethylene glycol monobutyl ether and 1.5 parts of potassium metabisulfite.
Example 2
The metal of the metal layer (1) is copper or aluminum. The area of the bonding part accounts for 30% of the total area of the PET layer (2), and the area of the wrapping part (2.1) accounts for 70% of the total area. The wrapping part (2.1) consists of the following components: 150 parts of PET resin, 20 parts of polyurethane resin, 25 parts of chloroprene rubber, 35 parts of glass fiber, 20 parts of calcium stearate, 15 parts of titanium dioxide, 4 parts of strontium aluminate, 4 parts of boron nitride, 1 part of hexadecyl trimethoxy silane and 1 part of cyclohexyl hexaol phosphate; the adhesive part (2.2) consists of the following components: 130 parts of PET resin, 25 parts of epoxy resin, 6 parts of pentaerythritol bisdimethyl silicate, 22 parts of polybutylene terephthalate, 15 parts of maleic anhydride grafted polyethylene, 4 parts of diethylene glycol monobutyl ether and 2 parts of potassium metabisulfite.
Example 3
The metal of the metal layer (1) is copper or aluminum. The area of the bonding part accounts for 20% of the total area of the PET layer (2), and the area of the wrapping part (2.1) accounts for 80% of the total area. The wrapping part (2.1) consists of the following components: 140 parts of PET resin, 18 parts of polyurethane resin, 22 parts of chloroprene rubber, 30 parts of glass fiber, 18 parts of calcium stearate, 12 parts of titanium dioxide, 4 parts of strontium aluminate, 4 parts of boron nitride, 0.9 part of hexadecyl trimethoxy silane and 0.9 part of cyclohexyl hexaol phosphate; the adhesive part (2.2) consists of the following components: 120 parts of PET resin, 22 parts of epoxy resin, 5 parts of pentaerythritol bisdimethyl silicate, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 3 parts of diethylene glycol monobutyl ether and 2 parts of potassium metabisulfite.
Test and results
The cable is designed by a special structure, is light in weight and small in volume, is good in environment-friendly flame retardance and aging resistance and weather resistance, does not release corrosive gas when the cable is burnt, can form a firm hardened layer at high temperature due to the adoption of a novel wrapping layer material, is excellent in performance in fire, can withstand the working temperature of 250 ℃, and improves the fireproof performance while keeping the flexibility performance, the electrical performance of a circuit is kept complete at 850 ℃ for 90 minutes in flame, the electrical performance of the circuit is kept complete after being sprayed or immersed by water for 15 minutes after being subjected to hot air aging at 150 ℃ for × 100 hours, and a circuit is kept complete in electrical performance.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention.
Claims (8)
1. A method of making a transmission cable shielding structure, wherein the method comprises:
1) providing a shielding layer which is a double-layer laminated structure and comprises a metal layer (1) and a PET layer (2) positioned on the metal layer (1);
2) placing a cable conductor (3) at the middle position of the upper side of the PET layer (2);
3) folding the shielding layer in half so that the PET layer (2) is wrapped on the outer side of the cable conductor (3), and the edge parts of the wrapped PET layer (2) are overlapped;
4) and hot-pressing the folded and stacked materials to bond the two PET layers (2) positioned on the inner layer at the overlapped edge part, thereby obtaining the transmission cable shielding structure.
2. The method of claim 1, wherein the PET layer (2) comprises a wrapping part (2.1) positioned in the middle of the PET layer (2) and bonding parts (2.2) positioned at two sides of the wrapping part (2.1), the wrapping part (2.1) contacts and wraps the cable conductor (3) after the shielding layer is folded in half, and the bonding parts (2.2) at two sides are overlapped and contacted with each other after the shielding layer is folded in half; the method comprises the step of coating hot melt glue on the bonding parts (2.2) on the two sides before folding the shielding layer in half.
3. The method according to claim 2, the wrapping (2.1) consisting of: 150 parts of PET resin 130-one, 15-20 parts of polyurethane resin, 20-25 parts of chloroprene rubber, 25-35 parts of glass fiber, 15-20 parts of calcium stearate, 10-15 parts of titanium dioxide, 3-4 parts of strontium aluminate, 3-4 parts of boron nitride, 0.8-1 part of hexadecyl trimethoxy silane and 0.8-1 part of cyclohexyl hexaol phosphate.
4. A method according to claim 3, the wrapping (2.1) consisting of: 140 parts of PET resin, 18 parts of polyurethane resin, 22 parts of chloroprene rubber, 30 parts of glass fiber, 18 parts of calcium stearate, 12 parts of titanium dioxide, 4 parts of strontium aluminate, 4 parts of boron nitride, 0.9 part of hexadecyl trimethoxy silane and 0.9 part of cyclohexyl hexaol phosphate.
5. The method according to claim 2, the bonding part (2.2) consisting of: 110-130 parts of PET resin, 20-25 parts of epoxy resin, 4-6 parts of pentaerythritol bisdimethyl silicate, 18-22 parts of polybutylene terephthalate, 10-15 parts of maleic anhydride grafted polyethylene, 3-4 parts of diethylene glycol monobutyl ether and 1.5-2 parts of potassium metabisulfite.
6. The method according to claim 5, the bonding part (2.2) consisting of: 120 parts of PET resin, 22 parts of epoxy resin, 5 parts of pentaerythritol bisdimethyl silicate, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 3 parts of diethylene glycol monobutyl ether and 2 parts of potassium metabisulfite.
7. The method according to any one of claims 1 to 6, the metal of the metal layer (1) being selected from copper or aluminum.
8. The method according to any one of claims 2 to 5, wherein the bond has an area of 10 to 30% of the total area of the PET layer (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010322667.9A CN111508669B (en) | 2020-04-22 | 2020-04-22 | Method for preparing transmission cable shielding structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010322667.9A CN111508669B (en) | 2020-04-22 | 2020-04-22 | Method for preparing transmission cable shielding structure |
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| CN111508669A true CN111508669A (en) | 2020-08-07 |
| CN111508669B CN111508669B (en) | 2021-07-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321572A (en) * | 1965-09-13 | 1967-05-23 | Gen Cable Corp | Dual laminated telephone cable sheath |
| GB1272482A (en) * | 1968-05-28 | 1972-04-26 | Gen Cable Corp | Electrical cables |
| JP2003055441A (en) * | 2001-08-10 | 2003-02-26 | Toyo Ink Mfg Co Ltd | Resin composition and plastic film coated metal plate using the same |
| CN101740170A (en) * | 2010-01-07 | 2010-06-16 | 林和鼎 | Data line and manufacturing process thereof |
| CN105913943A (en) * | 2016-07-07 | 2016-08-31 | 李保集 | Special cable for railway traffic |
| CN111029016A (en) * | 2019-12-31 | 2020-04-17 | 苏州东利鸿电子科技有限公司 | Communication shielded cable with wrapped shielding film and production process thereof |
-
2020
- 2020-04-22 CN CN202010322667.9A patent/CN111508669B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321572A (en) * | 1965-09-13 | 1967-05-23 | Gen Cable Corp | Dual laminated telephone cable sheath |
| GB1272482A (en) * | 1968-05-28 | 1972-04-26 | Gen Cable Corp | Electrical cables |
| JP2003055441A (en) * | 2001-08-10 | 2003-02-26 | Toyo Ink Mfg Co Ltd | Resin composition and plastic film coated metal plate using the same |
| CN101740170A (en) * | 2010-01-07 | 2010-06-16 | 林和鼎 | Data line and manufacturing process thereof |
| CN105913943A (en) * | 2016-07-07 | 2016-08-31 | 李保集 | Special cable for railway traffic |
| CN111029016A (en) * | 2019-12-31 | 2020-04-17 | 苏州东利鸿电子科技有限公司 | Communication shielded cable with wrapped shielding film and production process thereof |
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| CN111508669B (en) | 2021-07-06 |
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