CN101887771A - Semiconductive EVA plastic shielded flexible cable and manufacturing method thereof - Google Patents
Semiconductive EVA plastic shielded flexible cable and manufacturing method thereof Download PDFInfo
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- CN101887771A CN101887771A CN 201010168067 CN201010168067A CN101887771A CN 101887771 A CN101887771 A CN 101887771A CN 201010168067 CN201010168067 CN 201010168067 CN 201010168067 A CN201010168067 A CN 201010168067A CN 101887771 A CN101887771 A CN 101887771A
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Abstract
The invention relates to a flexible cable, in particular a semiconductive EVA plastic shielded flexible cable and a manufacturing method thereof. The cable comprises a copper core conductor (10), and is characterized in that the outer layer of the copper core conductor (10) is successively coated with a polrvinyl chloride insulating layer (20), an aluminium foil nylar (30), a fibrage layer (40), an EVA plastic shielding layer (50) and a polrvinyl chloride outer sheath (60), wherein the six parts are coated from inside to outside layer by layer. The invention adopts a new formula, and coordinates with the related process and manufacturing method to provide a new semiconductive EVA plastic shielded flexible cable which has good machining property, light weight, rounding and compact structure, excellent bending resistance, high strength of extension, excellent shielding property and long service life.
Description
Technical field
The present invention relates to a kind of flexible cable, refer more particularly to a kind of semiconductive EVA plastic shielded flexible cable and preparation method thereof.
Background technology
Communication audio frequency, broadcast stereo system, meter electronics, automation equipment and other need prevent in the interference circuit that in order to prevent electromagnetic interference, the connection of these systems all needs to adopt shielding usually with line.
For electric wire, what shielding material was the most frequently used is conductive materials such as copper cash, aluminium foil, Copper Foil.The structure of shielding has wrapped or vertical the bag on the cable with band; Also copper cash can be reeled or is woven on the cable; And these ways are compound, and to be applied to cable first-class.Use the mask tape machining period few, cost is low, but shielding character, bendability, flexibility etc. have problem.Use copper cash braiding bending property excellence, but cost is higher.Adopt these mode recombination energies that shield effectiveness is improved, but cost has also improved thereupon.How to adopt new material to explore new shielding mode and structure, to improve shielding properties and to reduce cost, be the problem that the electric wire field need solve always.
The shielding material of each common usefulness in field can be divided into compound two kinds of coating-type, structure by application form at present.It is electromagnetic screen coating etc. that the coating-type electromagnetic shielding material can be divided into silver system, carbon system, nickel system and copper again.Structure composite electromagnetic shielding material mainly is top layer conductivity type shielding plastic and filled-type shielding plastic based on shielding plastic.
Filled-type composite shielding plastics are to pass through mixing granulator by conductive filler and synthetic resin, and methods such as extrusion modling make.Compare with top layer conductivity type material (as aluminium foil, Copper Foil etc.), the filled-type material has one-time formed characteristics, thereby can reduce cost, and improves reliability of products.But because the restriction of prescription and technology is not used in electric wire shielding field always on a large scale.
Based on the weak point of above-mentioned existing electric wire shielding aspect, the inventor has invented " a kind of semiconductive EVA plastic shielded flexible cable and preparation method thereof ".
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art technical problem to be solved is: a kind of semiconductive EVA plastic shielded flexible cable and preparation method thereof is provided.
A kind of semiconductive EVA plastic shielded flexible cable, comprise the copper core conductor, described copper core conductor skin is coated with successively that polyvinyl chloride insulation layer, aluminium foil wheat draw, fibrage layer, the plastic shielded layer of EVA and polyvinyl chloride oversheath, and this six part coats from inside to outside layer by layer.
In the present invention, the copper core conductor uses many annealing bare copper wires stranded, and copper core conductor skin constitutes heart yearn coated with polyvinyl chloride insulation.Heart yearn of the present invention can be set to two cores or more than two cores, to adapt to the needs of different purposes and occasion.Heart yearn need carry out stranded when stranding.
Semi-conductive ethylene vinyl acetate (EVA) plastic adopts following prescription:
100 parts of meters of ethylene-vinyl acetate copolymer (EVA), the weight proportion of other component is:
Carbon black 35-50 part,
Trimethoxy silane coupling agent 1-4
Dispersant 1.2-1.8 part
Tissuemat E 1-2 part
Calcium carbonate 15-25 part
Zinc oxide 2-3 part
Tricresyl phosphate 1-2 part
Antioxidant 0.4-1.0 part
Crosslinking agent 1-4 part
Assistant crosslinking agent 0.3-0.7 part
On processing of semi-conductive ethylene vinyl acetate (EVA) plastic formula materials and the cabling process, adopt following technology:
Carbon black, calcium carbonate, zinc oxide is preheating and drying in high-speed mixer at first; Drop into trimethoxy silane coupling agent, high-speed stirred after removing moisture in batches or once.Together to put into banbury mixing for other material (not comprising crosslinking agent and assistant crosslinking agent) in discharging afterwards, cooling back and the prescription; Add crosslinking agent and assistant crosslinking agent after 10-15 minute; Keep temperature-resistant, the banburying time is 10-12 minute, obtains semi-conductive ethylene vinyl acetate (EVA) plastic for shielding.
Described semiconductive EVA plastic shielded flexible cable stranding step is:
1), the copper core is carried out wire drawing;
2), with the annealing of described wire drawing metal, and strand is made heart yearn;
3), install the polyvinyl chloride insulation layer additional;
4), coating the aluminium foil wheat draws;
5), install the fibrage layer additional;
6), install plastic shielded layer of EVA and polyvinyl chloride coating additional, will expect that grain adds a corresponding extruder, adopt two-layer coextrusion process, plastic shielded layer of described EVA and polyvinyl chloride coating are extruded on the surface of described heart yearn.
The beneficial effect of a kind of semiconductive EVA plastic shielded flexible cable of the present invention and preparation method thereof is:
By adopting new prescription, cooperate corresponding technology and manufacture method, a kind of novel semiconductive EVA plastic shielded flexible cable is provided.This cable machinery good processability, in light weight, structure rounding, compactness have good warping resistance ability, tensile strength height, shielding properties excellence, long service life.The present invention adopts semiconductive EVA plastic shielded layer, the two-layer coextrusion process of polyvinyl chloride coating on the cabling process, to save cost, simplifies technology.
1. aspect tension, aluminium foil wheat of the present invention is drawn with semiconductive EVA plastic shielded interlayer and establishes the fibrage layer, relies on outer polyvinyl chloride insulation lining sheath simultaneously, and the two is in conjunction with the resistance to tension that has strengthened cable jointly.
2. aspect function of shielding, the present invention adopts the aluminium foil wheat to draw and the design of semi-conductive ethylene vinyl acetate (EVA) plastic double layer screen, and its characteristics are to have replaced traditional copper cash or associated tracks braid with semi-conductive ethylene vinyl acetate (EVA) plastic.Avoided employing braid when design complex process, problem such as involve great expense, the semi-conductive ethylene vinyl acetate (EVA) plastic machining property is good, install that technology is simple, shielding properties is excellent additional, and cost performance is reasonable.
Description of drawings
Fig. 1 is an internal structure schematic diagram of the present invention;
Description of reference numerals:
10, copper core conductor 20, polyvinyl chloride insulation layer 30, aluminium foil wheat are drawn
40, fibrage layer 50, the plastic shielded layer 60 of EVA, polyvinyl chloride oversheath
Embodiment:
The present invention will be further described below in conjunction with example:
In Fig. 1, a kind of semiconductive EVA plastic shielded flexible cable comprises copper core conductor 10, copper core conductor 10 skins are coated with successively that polyvinyl chloride insulation layer 20, aluminium foil wheat draw 30, fibrage layer 40, the plastic shielded layer 50 of EVA and polyvinyl chloride oversheath 60, and this six part coats from inside to outside layer by layer.In force, the copper core conductor is that many annealing bare copper wires are stranded.Copper core conductor skin constitutes heart yearn coated with the polyvinyl chloride insulation layer, and heart yearn can be set to two cores or more than two cores, to adapt to the needs of different purposes and occasion, heart yearn need carry out stranded when stranding.
In the present embodiment, semi-conductive ethylene vinyl acetate (EVA) plastic material grain processing technology is as follows:
2 parts of 45 parts of carbon blacks, 15 parts in calcium carbonate, zinc oxide be preheating and drying in high-speed mixer at first; Drop into 2 parts of trimethoxy silane coupling agents, high-speed stirred after removing moisture.Discharging afterwards, cooling back and 100 parts of ethylene-vinyl acetate copolymers (EVA), 1.5 parts of oleamides; 2 parts of Tissuemat Es; 1 part of tricresyl phosphate; 4, it is mixing that 0.4 part of 4 '-thiobis [3 methy 6 tert butyl phenol] is together put into banbury; Add 2 parts of 4,4 '-two [uncle's fourth is crossed peroxy] n-butyl pentanoates after 10-15 minute; 0.4 part of TAIC; Keep temperature-resistant, banburying 10-12 minute, enter the single screw extrusion machine extruding pelletization.Enter screening machine then and screen, drier dries, and enters drying machine drying again and makes the material grain.
The stranding step:
1, the copper core is carried out wire drawing:
2, with described wire drawing metal annealing, and strand is made heart yearn;
3, install the polyvinyl chloride insulation layer additional;
4, coating the aluminium foil wheat draws;
5, install the fibrage layer additional;
6, install plastic shielded layer of EVA and polyvinyl chloride coating additional, will expect that grain adds corresponding extruder, adopt two-layer coextrusion process, plastic shielded layer of described EVA and polyvinyl chloride coating are extruded on the surface of described heart yearn.
The above, it only is the preferred embodiment of a kind of semiconductive EVA plastic shielded flexible cable of the present invention and preparation method thereof, be not that technical scope of the present invention is imposed any restrictions, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention above any trickle modification, equivalent variations and modification that embodiment did.
Claims (7)
1. semiconductive EVA plastic shielded flexible cable, comprise copper core conductor (10), it is characterized in that: described copper core conductor (10) skin is coated with polyvinyl chloride insulation layer (20) successively, the aluminium foil wheat is drawn (30), fibrage layer (40), the plastic shielded layer of EVA (50) and polyvinyl chloride oversheath (60), this six part coats from inside to outside layer by layer.
2. a kind of semiconductive EVA plastic shielded flexible cable according to claim 1 is characterized in that described copper core conductor is that many annealing bare copper wires are stranded.
3. a kind of semiconductive EVA plastic shielded flexible cable according to claim 1, it is characterized in that described copper core conductor skin constitutes heart yearn coated with the polyvinyl chloride insulation layer, heart yearn can be set to two cores or more than two cores, to adapt to the needs of different purposes and occasion, heart yearn need carry out stranded when stranding.
4. a kind of semiconductive EVA plastic shielded flexible cable according to claim 1 is characterized in that described semiconductive EVA plastic shielded layer is made with semi-conductive ethylene vinyl acetate (EVA) plastic, and semi-conductive ethylene vinyl acetate (EVA) plastic adopts following prescription to make:
100 parts of meters of ethylene-vinyl acetate copolymer (EVA), the weight proportion of other component is:
Carbon black 35-50 part;
Trimethoxy silane coupling agent 1-4;
Dispersant 1.2-1.8 part;
Tissuemat E 1-2 part;
Calcium carbonate 15-25 part;
Zinc oxide 2-3 part;
Tricresyl phosphate 1-2 part;
Antioxidant 0.4-1.0 part;
Crosslinking agent 1-4 part;
Assistant crosslinking agent 0.3-0.7 part.
5. a kind of semiconductive EVA plastic shielded flexible cable according to claim 4 is characterized in that the production technology of described semi-conductive ethylene vinyl acetate (EVA) plastic is:
At first with carbon black, calcium carbonate, zinc oxide preheating and drying in high-speed mixer; Drop into trimethoxy silane coupling agent, high-speed stirred after removing moisture in batches or once; Together to put into banbury mixing for other material (not comprising crosslinking agent and assistant crosslinking agent) in discharging afterwards, cooling back and the prescription; Add crosslinking agent and assistant crosslinking agent after 10-15 minute; Keep temperature-resistant, the banburying time is 10-12 minute, obtains semi-conductive ethylene vinyl acetate (EVA) plastic for shielding.
6. a kind of semiconductive EVA plastic shielded flexible cable according to claim 4 is characterized in that the production technology of described semi-conductive ethylene vinyl acetate (EVA) plastic is:
2 parts of 45 parts of carbon blacks, 15 parts in calcium carbonate, zinc oxide be preheating and drying in high-speed mixer at first; Drop into 2 parts of trimethoxy silane coupling agents, high-speed stirred after removing moisture.Discharging afterwards, cooling back and 100 parts of ethylene-vinyl acetate copolymers (EVA), 1.5 parts of oleamides; 2 parts of Tissuemat Es; 1 part of tricresyl phosphate; 4, it is mixing that 0.4 part of 4 '-thiobis [3 methy 6 tert butyl phenol] is together put into banbury; Add 2 parts of 4,4 '-two [uncle's fourth is crossed peroxy] n-butyl pentanoates after 10-15 minute; 0.4 part of TAIC; Keep temperature-resistant, banburying 10-12 minute, enter the single screw extrusion machine extruding pelletization, enter screening machine then and screen, drier dries, and enters drying machine drying again and makes the EVA plastic pellet.
7. a kind of semiconductive EVA plastic shielded flexible cable according to claim 1 is characterized in that described semiconductive EVA plastic shielded flexible cable stranding step is:
1), the copper core is carried out wire drawing;
2), with the annealing of described wire drawing metal, and strand is made heart yearn;
3), install the polyvinyl chloride insulation layer additional;
4), coating the aluminium foil wheat draws;
5), install the fibrage layer additional;
6), install plastic shielded layer of EVA and polyvinyl chloride coating additional, will expect that grain adds a corresponding extruder, adopt two-layer coextrusion process, plastic shielded layer of described EVA and polyvinyl chloride coating are extruded on the surface of described heart yearn.
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| CN2010101680678A CN101887771B (en) | 2010-05-05 | 2010-05-05 | Semiconductive EVA plastic shielded flexible cable and manufacturing method thereof |
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| CN2010101680678A CN101887771B (en) | 2010-05-05 | 2010-05-05 | Semiconductive EVA plastic shielded flexible cable and manufacturing method thereof |
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| CN101887771B CN101887771B (en) | 2012-03-21 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417683A (en) * | 2011-11-24 | 2012-04-18 | 无锡江南电缆有限公司 | Production method of semiconduction shielding belt of high voltage direct current cable |
| CN102737756A (en) * | 2011-04-14 | 2012-10-17 | 江苏华能电缆股份有限公司 | Umbilical cable for ocean engineering |
| CN102737757A (en) * | 2011-04-14 | 2012-10-17 | 江苏华能电缆股份有限公司 | Digital monitoring cable for navel ship |
| CN102863686A (en) * | 2012-10-11 | 2013-01-09 | 江苏德威新材料股份有限公司 | Semiconductive low-smoke zero-halogen flame-retardant polyolefin sheath material and preparation method thereof |
| CN103871678A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Ultrafine coaxial cable with superior shielding performance |
| CN104036851A (en) * | 2014-05-16 | 2014-09-10 | 昆山联滔电子有限公司 | Cable |
| CN104619057A (en) * | 2014-12-18 | 2015-05-13 | 博太科防爆设备（上海）有限公司 | Technological production method for blast-proof single-core constant-power heat tracing cable with high extrusion strength resistance |
| CN105602353A (en) * | 2016-01-21 | 2016-05-25 | 安徽远征电缆科技有限公司 | Insulated low-smoke zero-halogen cable sheath formulation |
| CN105623144A (en) * | 2016-01-27 | 2016-06-01 | 安徽卓越电缆有限公司 | Flexible cable rubber insulation flame-retardant sheath material |
| CN112750560A (en) * | 2020-12-26 | 2021-05-04 | 上海古乾智能传输有限公司 | Improved electrocardiogram instrument cable and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737756A (en) * | 2011-04-14 | 2012-10-17 | 江苏华能电缆股份有限公司 | Umbilical cable for ocean engineering |
| CN102737757A (en) * | 2011-04-14 | 2012-10-17 | 江苏华能电缆股份有限公司 | Digital monitoring cable for navel ship |
| CN102417683A (en) * | 2011-11-24 | 2012-04-18 | 无锡江南电缆有限公司 | Production method of semiconduction shielding belt of high voltage direct current cable |
| CN102863686A (en) * | 2012-10-11 | 2013-01-09 | 江苏德威新材料股份有限公司 | Semiconductive low-smoke zero-halogen flame-retardant polyolefin sheath material and preparation method thereof |
| CN102863686B (en) * | 2012-10-11 | 2014-12-17 | 江苏德威新材料股份有限公司 | Semiconductive low-smoke zero-halogen flame-retardant polyolefin sheath material and preparation method thereof |
| CN103871678A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Ultrafine coaxial cable with superior shielding performance |
| CN104036851A (en) * | 2014-05-16 | 2014-09-10 | 昆山联滔电子有限公司 | Cable |
| CN104619057A (en) * | 2014-12-18 | 2015-05-13 | 博太科防爆设备（上海）有限公司 | Technological production method for blast-proof single-core constant-power heat tracing cable with high extrusion strength resistance |
| CN105602353A (en) * | 2016-01-21 | 2016-05-25 | 安徽远征电缆科技有限公司 | Insulated low-smoke zero-halogen cable sheath formulation |
| CN105623144A (en) * | 2016-01-27 | 2016-06-01 | 安徽卓越电缆有限公司 | Flexible cable rubber insulation flame-retardant sheath material |
| CN112750560A (en) * | 2020-12-26 | 2021-05-04 | 上海古乾智能传输有限公司 | Improved electrocardiogram instrument cable and preparation method thereof |
| CN112750560B (en) * | 2020-12-26 | 2022-05-13 | 上海古乾智能传输有限公司 | Improved electrocardiogram instrument cable and preparation method thereof |
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| CN101887771B (en) | 2012-03-21 |
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Effective date of registration: 20210927 Address after: 241000 Fanchang County Economic Development Zone, Wuhu City, Anhui Province Patentee after: ANHUI LIANJIAXIANG SPECIAL CABLE Co.,Ltd. Address before: 518000, 2 floor, 113 Industrial Zone, Sha Tsui, Shenzhen, Guangdong, Futian District Patentee before: SHENZHEN LIANJIAXIANG SCIENCE & TECHNOLOGY Co.,Ltd. |
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