CN110698752A - Conductive shielding film material, preparation method thereof and shielding data line - Google Patents
Conductive shielding film material, preparation method thereof and shielding data line Download PDFInfo
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- CN110698752A CN110698752A CN201910949554.9A CN201910949554A CN110698752A CN 110698752 A CN110698752 A CN 110698752A CN 201910949554 A CN201910949554 A CN 201910949554A CN 110698752 A CN110698752 A CN 110698752A
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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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- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- 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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- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/001—Conductive additives
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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
- C08K3/02—Elements
- C08K3/04—Carbon
Abstract
The invention discloses a conductive shielding film material, a preparation method thereof and a shielding data wire. The conductive shielding film material comprises the following components in parts by weight: 4-6 parts of ethylene-vinyl acetate copolymer, 65-75 parts of linear low-density polyethylene, 1 part of carbon black and 29-31 parts of filler. The conductive shielding film material is added with carbon black to realize conductivity, and a metal layer does not need to be coated additionally, so that the problem of abrasion of an eye die and a jig in production is solved, the problem of dust caused by friction of a metal film and the die is also avoided, the environment is better protected, and the body safety of operators is ensured; in addition, the conductive shielding film material is lighter in specific gravity and softer than the metal foil, and a finished cable product made of the conductive shielding film material is lighter, thinner and softer, so that the carrying weight of a consumer is reduced, and the conductive shielding film material is more convenient to bend, place and carry.
Description
Technical Field
The invention relates to the technical field of wires and cables, in particular to a conductive shielding film material, a preparation method thereof and a shielding data wire.
Background
The conventional bag belt material used at present is generally a PP film and plastic film + metal coating structure, and is coated on the cable as a shielding layer so as to ensure that the cable signal is not interfered by other external electromagnetic signals. However, the metal film is hard, so that the coated wire is hard and inconvenient to bend and carry. And the metal film can abrade the eye die and the jig in production, and metal dust can be generated by the friction between the metal film and the metal eye die, so that the working environment is easily polluted and the body of a worker is easily injured. In actual production, the metal coating is very sharp at the edge of the metal foil, so that fingers or other parts are easily cut when the debugging machine is produced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a conductive shielding film material, a preparation method thereof and a shielding data wire, which solve the problem of abrasion of an eye die and a jig in production and also avoid the problem of dust caused by friction of a metal film and the die, and the conductive shielding film material has soft performance and is convenient to bend and carry.
In order to solve the technical problems, the invention adopts the following technical scheme:
a conductive shielding film material comprises the following components in parts by weight: 4-6 parts of ethylene-vinyl acetate copolymer, 65-75 parts of linear low-density polyethylene, 1 part of carbon black and 29-31 parts of filler.
The preparation method of the conductive shielding film material comprises the following steps: respectively putting the ethylene-vinyl acetate copolymer, the linear low-density polyethylene, the carbon black and the filler into an oven with the temperature of 80 ℃ for drying for 4 hours to ensure that the materials are dried without moisture; putting the ethylene-vinyl acetate copolymer and the linear low-density polyethylene into mixing equipment according to the formula proportion for mixing, adding carbon black and a filler into the mixing equipment according to the formula proportion after the ethylene-vinyl acetate copolymer and the linear low-density polyethylene are fully mixed, and mixing for 1 hour at 120-130 ℃; and adding the mixed materials into an extruder, extruding, granulating, bagging and sealing.
The shielding data wire comprises a shielding layer and an outer cover coated outside the shielding layer, wherein a conductive core wire is arranged in the shielding layer, and the shielding layer is made of the conductive shielding film material.
The invention has the beneficial technical effects that: according to the conductive shielding film material, the carbon black is added to realize conductivity, and a metal layer does not need to be coated additionally, so that the problem that an eye mold and a jig are abraded in production is solved, the problem that dust is caused by friction between a metal film and the mold is avoided, the environment is better protected, and the body safety of operators is ensured; in addition, the conductive shielding film material is lighter in specific gravity and softer than the metal foil, and a finished cable product made of the conductive shielding film material is lighter, thinner and softer, so that the carrying weight of a consumer is reduced, and the conductive shielding film material is more convenient to bend, place and carry.
Drawings
Fig. 1 is a cross-sectional view of a shielded data line of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
Example 1:
the conductive shielding film material comprises the following components in parts by weight: 4 parts of ethylene vinyl Acetate Copolymer (EVA), 65 parts of Linear Low Density Polyethylene (LLDPE), 1 part of carbon black and 29 parts of filler. Wherein the filler is calcium carbonate.
The preparation method of the conductive shielding film material comprises the following steps:
s11, respectively putting the ethylene-vinyl acetate copolymer, the linear low-density polyethylene, the carbon black and the filler into an oven with the temperature of 80 ℃ for drying for 4 hours to ensure that the materials are dried without moisture;
s12, putting 4 parts of ethylene-vinyl acetate copolymer and 65 parts of linear low-density polyethylene into mixing equipment for mixing, adding 1 part of carbon black and 29 parts of filler into the mixing equipment after the ethylene-vinyl acetate copolymer and the linear low-density polyethylene are fully mixed, and mixing for 1 hour at 120 ℃;
and S13, adding the mixed materials into an extruder, extruding, granulating, bagging and sealing.
Example 2:
the conductive shielding film material comprises the following components in parts by weight: 6 parts of ethylene-vinyl acetate copolymer, 75 parts of linear low-density polyethylene, 1 part of carbon black and 31 parts of filler. Wherein the filler is calcium carbonate.
The preparation method of the conductive shielding film material comprises the following steps:
s21, respectively putting the ethylene-vinyl acetate copolymer, the linear low-density polyethylene, the carbon black and the filler into an oven with the temperature of 80 ℃ for drying for 4 hours to ensure that the materials are dried without moisture;
s22, putting 6 parts of ethylene-vinyl acetate copolymer and 75 parts of linear low-density polyethylene into mixing equipment for mixing, adding 1 part of carbon black and 31 parts of filler into the mixing equipment after the ethylene-vinyl acetate copolymer and the linear low-density polyethylene are fully mixed, and mixing for 1 hour at 125 ℃;
and S23, adding the mixed materials into an extruder, extruding, granulating, bagging and sealing.
Example 3:
the conductive shielding film material comprises the following components in parts by weight: 5.5 parts of ethylene-vinyl acetate copolymer, 71 parts of linear low-density polyethylene, 1 part of carbon black and 30 parts of filler. Wherein the filler is calcium carbonate.
The preparation method of the conductive shielding film material comprises the following steps:
s31, respectively putting the ethylene-vinyl acetate copolymer, the linear low-density polyethylene, the carbon black and the filler into an oven with the temperature of 80 ℃ for drying for 4 hours to ensure that the materials are dried without moisture;
s32, putting 5.5 parts of ethylene-vinyl acetate copolymer and 71 parts of linear low-density polyethylene into mixing equipment for mixing, adding 1 part of carbon black and 30 parts of filler into the mixing equipment after the ethylene-vinyl acetate copolymer and the linear low-density polyethylene are fully mixed, and mixing for 1 hour at 130 ℃;
and S33, adding the mixed materials into an extruder, extruding, granulating, bagging and sealing.
As shown in fig. 1, the present invention further provides a shielded data line 10, which includes a shielding layer 11 and an outer cover 12 covering the shielding layer 11, wherein a conductive core wire is disposed in the shielding layer 12, the conductive core wire includes a signal transmission core wire 13 and a power supply core wire 14, and the shielding layer 12 is made of the conductive shielding film material according to any one of embodiments 1 to 3.
A filler 15 is also disposed in the shielding layer 12, and the filler 15 is located between the signal transmission core 13 and the power supply core 14. The filler 15 was 1000D Kevler fiber. Kevler fiber is a novel high-tech synthetic fiber, has excellent performances such as superhigh strength, high modulus and high temperature resistance, acid and alkali resistance, light weight, and its intensity is 5 ~ 6 times of steel wire, and the modulus is 2 ~ 3 times of steel wire or glass fiber, and toughness is 2 times of steel wire, and weight is only about 1/5 of steel wire, under 560 degrees of temperature, does not decompose, does not melt. The filler 15 of the present embodiment is made of Kevler fiber, which has good insulation and aging resistance, so that the shielded data line 10 can have a longer service life.
The outer cover 12 is made of PVC plastic, the PVC plastic is composed of polyvinyl chloride, a plasticizer LC-300 and calcium carbonate, and the mass ratio of the polyvinyl chloride to the plasticizer LC-300 to the calcium carbonate is 6:8: 1. The outer cover 12 is comfortable and soft, and has high elongation, so that the shielding data wire 10 is comfortable and soft, has more comfortable hand feeling, and is convenient to use.
The invention has the beneficial effects that: 1. the conductive shielding film material is added with carbon black to realize conductivity without additionally coating a metal layer, so that the problem that an eye mold and a jig are worn in production is solved; the problem of dust caused by friction of a metal film and a die is also avoided, the environment is better protected, and the body safety of operators is ensured.
2. The conductive shielding film material is lighter in specific gravity and softer than a metal foil, and a finished cable product made of the conductive shielding film material is lighter, thinner and softer, so that the carrying weight of a consumer is reduced, and the conductive shielding film material is more convenient to bend, place and carry.
3. The conductive shielding film material has soft performance, and does not scratch or cut fingers and other parts in production, thereby ensuring the safety of production personnel.
4. Because the traditional metal coating is not used, the conductive shielding film material greatly improves the elongation at break while ensuring the tensile strength at break.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.
Claims (10)
1. The conductive shielding film material is characterized by comprising the following components in parts by weight:
4-6 parts of ethylene-vinyl acetate copolymer
65-75 parts of linear low-density polyethylene
Carbon black 1 part
29-31 parts of a filler.
2. The conductive shielding film material of claim 1, wherein the conductive shielding film material comprises the following components in parts by weight:
ethylene-vinyl acetate copolymer 4 parts
Linear low density polyethylene 65 parts
Carbon black 1 part
29 parts of a filling agent.
3. The conductive shielding film material of claim 1, wherein the conductive shielding film material comprises the following components in parts by weight:
ethylene-vinyl acetate copolymer 6 parts
75 parts of linear low-density polyethylene
Carbon black 1 part
31 parts of a filling agent.
4. The conductive shielding film material of claim 1, wherein the conductive shielding film material comprises the following components in parts by weight:
ethylene-vinyl acetate copolymer 5.5 parts
71 parts of linear low-density polyethylene
Carbon black 1 part
And 30 parts of a filler.
5. The conductive barrier film material of any of claims 1-4, wherein the filler is calcium carbonate.
6. The method of preparing a conductive shielding film material of any of claims 1 to 5, comprising:
respectively putting the ethylene-vinyl acetate copolymer, the linear low-density polyethylene, the carbon black and the filler into an oven with the temperature of 80 ℃ for drying for 4 hours to ensure that the materials are dried without moisture;
putting the ethylene-vinyl acetate copolymer and the linear low-density polyethylene into mixing equipment according to the formula proportion for mixing, adding carbon black and a filler into the mixing equipment according to the formula proportion after the ethylene-vinyl acetate copolymer and the linear low-density polyethylene are fully mixed, and mixing for 1 hour at 120-130 ℃;
and adding the mixed materials into an extruder, extruding, granulating, bagging and sealing.
7. A shielded data line, comprising: the shielding data wire comprises a shielding layer and an outer cover coated outside the shielding layer, wherein a conductive core wire is arranged in the shielding layer, and the shielding layer is made of the conductive shielding film material as claimed in any one of claims 1 to 5.
8. The shielded data line of claim 7, wherein: the conductive core comprises a signal transmission core and a power supply core.
9. The shielded data line of claim 8, wherein: and a filler is also arranged in the shielding layer and is positioned between the signal transmission core wire and the power supply core wire.
10. The shielded data line of claim 9, wherein: the outer cover is made of PVC plastic, the PVC plastic is composed of polyvinyl chloride, a plasticizer LC-300 and calcium carbonate, and the mass ratio of the polyvinyl chloride to the plasticizer LC-300 to the calcium carbonate is 6:8: 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949554.9A CN110698752A (en) | 2019-10-08 | 2019-10-08 | Conductive shielding film material, preparation method thereof and shielding data line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910949554.9A CN110698752A (en) | 2019-10-08 | 2019-10-08 | Conductive shielding film material, preparation method thereof and shielding data line |
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| CN110698752A true CN110698752A (en) | 2020-01-17 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856844A (en) * | 2003-09-25 | 2006-11-01 | 陶氏环球技术公司 | Strippable semiconductive shield and compositions therefor |
| CN102509573A (en) * | 2011-11-24 | 2012-06-20 | 无锡江南电缆有限公司 | Ultra-smooth semi-conductive shielding material for high-voltage direct-current cable |
| CN105061879A (en) * | 2015-08-19 | 2015-11-18 | 成都鑫成鹏线缆材料有限公司 | Ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for conductor and preparation method of thermoplastic semiconductive shielding material |
| CN109348719A (en) * | 2016-06-30 | 2019-02-15 | 陶氏环球技术有限责任公司 | The shield semiconductors of solderless wiring and protrusion |
| CN109687246A (en) * | 2019-01-23 | 2019-04-26 | 深圳市晖耀电线电缆有限公司 | Super-strength tension is anti-to shake data line |
| CN109777027A (en) * | 2019-01-10 | 2019-05-21 | 宁波市青湖弹性体科技有限公司 | A kind of halogen-free flame-retardant conductive elastomer and preparation method thereof for data line electromagnetic shielding |
| CN110010275A (en) * | 2019-04-30 | 2019-07-12 | 深圳市傲基电子商务股份有限公司 | High shielding wire rod, data line and method for manufacturing wire |
-
2019
- 2019-10-08 CN CN201910949554.9A patent/CN110698752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856844A (en) * | 2003-09-25 | 2006-11-01 | 陶氏环球技术公司 | Strippable semiconductive shield and compositions therefor |
| CN102509573A (en) * | 2011-11-24 | 2012-06-20 | 无锡江南电缆有限公司 | Ultra-smooth semi-conductive shielding material for high-voltage direct-current cable |
| CN105061879A (en) * | 2015-08-19 | 2015-11-18 | 成都鑫成鹏线缆材料有限公司 | Ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for conductor and preparation method of thermoplastic semiconductive shielding material |
| CN109348719A (en) * | 2016-06-30 | 2019-02-15 | 陶氏环球技术有限责任公司 | The shield semiconductors of solderless wiring and protrusion |
| CN109777027A (en) * | 2019-01-10 | 2019-05-21 | 宁波市青湖弹性体科技有限公司 | A kind of halogen-free flame-retardant conductive elastomer and preparation method thereof for data line electromagnetic shielding |
| CN109687246A (en) * | 2019-01-23 | 2019-04-26 | 深圳市晖耀电线电缆有限公司 | Super-strength tension is anti-to shake data line |
| CN110010275A (en) * | 2019-04-30 | 2019-07-12 | 深圳市傲基电子商务股份有限公司 | High shielding wire rod, data line and method for manufacturing wire |
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Address after: 518000 1st-4th floor, No.3, Shiao Village Second Industrial Zone, Xinshi community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Huiyao Electronic Co.,Ltd. Address before: 518000 Shenzhen, Guangdong Longhua New District, big wave street, big wave community rock group second industrial zone 3 1-4 floor. Applicant before: SHENZHEN SUNLIKE TECHNOLOGY Co.,Ltd. |
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Address after: 518000 floors 1-4, No. 9, Tongfu estate industrial zone, Dalang community, Dalang street, Longhua District, Shenzhen, Guangdong Province Applicant after: Shenzhen Huiyao Electronic Co.,Ltd. Address before: 518000 1 / F-4 / F, No.3, second industrial zone, Shiao village, Xinshi community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Huiyao Electronic Co.,Ltd. |
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Application publication date: 20200117 |