CN103762018B - A kind of super soft high adhesion force heat-resistant fireproof environmental protection single core cable and preparation method - Google Patents
A kind of super soft high adhesion force heat-resistant fireproof environmental protection single core cable and preparation method Download PDFInfo
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Abstract
The invention discloses a kind of super soft high adhesion force heat-resistant fireproof environmental protection single core cable and preparation method, described electric wire is made up of inner wire and ground floor insulating barrier and second layer insulating barrier successively, described ground floor insulating barrier is ethene improved-acrylic copolymer, and described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; Ground floor insulating barrier and second layer insulating barrier are respectively by extruder mixing extrusion, and ground floor insulating barrier is adhered tightly to outside inner wire, and second layer insulating barrier sticks to ground floor surface of insulating layer; Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad, and wire external diameter is 1.40mm; Electric wire pliability of the present invention is good, and insulating barrier has stickiness, and adhesive force is large, high temperature resistant, and flame-proof environmental protection is with low cost, and technique is simple, can substitute import like product completely.
Description
Technical field
The invention discloses a kind of single core cable and preparation method thereof, relate more specifically to a kind of can alternating bending winding, conductor and insulation can not the super soft high adhesion force heat-resistant fireproof environmental protection single core cable of one of movement and preparation methods.
Background technology
Fire resistant electric wire has been widely used in electrically in the market, on the equipment such as e-machine inside and outside distribution, the primary structure of its single core insulation product is ordinary construction inner wire+single-layer insulation material composition.Adopt the wire products that this structure forms, softness is poor, and wire rod is partially hard, processing and bending property bad, when electric wire processing welding because electric wire more firmly and easily flicks, cause scolding tin bad, thus have impact on processing characteristics and the useful life of product.Particularly when electric wire uses length very short, cut out line length when about 5cm, because conductor specification is less, its conductor and insulating barrier contact-making surface are also very little, are easy to loosen, and conductor can extract insulating barrier out easily.In addition, in wire bend process, conductor also can expose outside insulating barrier, thus occurs that conductor exposes, and equipment loose contact, causes oxidation, heating and short circuit phenomenon.
This kind of electric wire is mainly used on the relay in equipment, because the contact of contact will on-off switch repeatedly, the electric wire on this contact also wants alternating bending, while this requires that electric wire will have certain pliability, because of bending, electric wire insulation layer can not occur that conductor exposes, insulation rebound phenomenon.
The similar electric wire being used in this occasion is at present adopt imported with original packaging mostly, in order to increase adhesive force, and 24AWG(0.20mm
2) conductor structure of electric wire generally adopts the superfine copper wire that 102 0.05mm are even less, through multiple operation layer-stranding, the lay of conductor strand can only within 10 of its stranded external diameter times, increase the contact area of conductor and insulating barrier with this, reach the object increasing conductor and surface of insulating layer tack.But its complex process, expensive, cost is high.
Therefore, development is a kind of cheap, and processing is simple, and can stand the high temperature of 125 DEG C of working temperatures, super soft high adhesion force, the single core cable of flame-proof environmental protection has become industry problem demanding prompt solution.
Summary of the invention
Object of the present invention is exactly that insulating barrier has stickiness, and adhesive force is large in order to provide a kind of electric wire pliability good, high temperature resistant, flame-proof environmental protection, with low cost, technique is simple, can substitute the super soft high adhesion force heat-resistant fireproof environmental protection single core cable of one and the preparation method of import like product completely.
For achieving the above object, the technical solution used in the present invention is: a kind of super soft high adhesion force heat-resistant fireproof environmental protection single core cable, be made up of inner wire and ground floor insulating barrier and second layer insulating barrier successively, described ground floor insulating barrier is ethene improved-acrylic copolymer, be made up of following material and parts by weight: ethene-vinyl acetate 18 ~ 50, polyethylene 15 ~ 30, hydrotalcite 6 ~ 25, fire retardant 9.6 ~ 35,1010 antioxidant 0.5 ~ 2, titanate coupling agent 0.5 ~ 2, wax 0.1 ~ 1.5, white oil 0.4 ~ 2, thickening fluid 0.4 ~ 2; Described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; Ground floor insulating barrier and second layer insulating barrier are respectively by extruder mixing extrusion, and ground floor insulating barrier is adhered tightly to outside inner wire, and second layer insulating barrier sticks to ground floor surface of insulating layer; Ground floor thickness of insulating layer is 0.05mm, and second layer thickness of insulating layer is 0.38mm; Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad, and wire external diameter is 1.40mm.
Described inner wire adopts 24AWG wire gauge, by 26 0.10mm naked coppers or tinned wird is stranded forms.
The preferred anaerobic bare copper conductor of described inner wire, stranded external diameter is 0.59mm, and conductor lay is 18 times of conductor strand external diameter.
The preparation method of super soft high adhesion force heat-resistant fireproof environmental protection single core cable of the present invention, is made up of following step:
(1) select 24AWG wire gauge, by 26 0.10mm naked coppers or the stranded inner wire of tinned wird;
(2) get the material of ground floor insulating barrier: ethene-vinyl acetate, polyethylene, hydrotalcite, fire retardant, 1010 antioxidant, titanate coupling agent, wax, white oil, thickening fluid, after weighing by proportioning, mix and blend, refine after 20 minutes at 120 ~ 130 DEG C, extruded by 35 extruders on 35+65 type two-layer co-extruding extruder, insulation thickness when extruding is 0.05mm; This insulating barrier is adhered tightly to outside inner wire; The extrusion temperature of described 35 plastic extruders controls: a district: 125 ~ 135 DEG C; 2nd district: 135 ~ 145 DEG C; 3rd district: 150 ~ 165 DEG C; 4th district: 165 ~ 175 DEG C; Head: 175 ~ 185 DEG C; Eye mould: 170 ~ 175 DEG C;
(3) get second layer insulating barrier material: shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin, by 65 extrusion main units on 35+65 type two-layer co-extruding extruder, through extrusion main unit mixing extrusion, second layer thickness of insulating layer is 0.38mm, this insulating barrier sticks to ground floor surface of insulating layer, and the wire external diameter after extrusioning shaping is 1.40mm; The extrusion temperature of described 65 plastic extruders controls: a district: 120 ~ 130 DEG C; 2nd district: 130 ~ 140 DEG C; 3rd district: 140 ~ 150 DEG C; 4th district: 150 ~ 160 DEG C; 5th district: 160 ~ 170 DEG C; 6th district: 160 ~ 170 DEG C; Head: 165 ~ 170 DEG C; Eye mould: 160 ~ 165 DEG C;
(4) the electric wire after extruding, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad; Insulating barrier adhesive force reaches more than 60N.
The present invention is by normal ethylene-propylene acid copolymer (EAA) through modification, and composition ground floor insulating barrier, its insulation is tightly adhered to inner wire surface, makes inner wire there will not be mobile phenomenon.Second layer insulation is soft low smoke and zero halogen cross-linking radiation polyolefin, and material hardness is shore 60A, 35A more than softer than conventional material.Pliability and the resist bending performance of insulation is realized with this.Because bi-material is thermoplastic materials, be attached on completely together through high-temperature fusion latter two material, there will not be segregation phenomenon.
Adopt with after upper type, described super soft high-temperature-resistant environment-friendly electric wire uses common conventional conductor and stranded mode, does not need to design conductor specification and lay especially.By the insulating material of mixture after double-layer coextrusion, its insulating barrier and conductor closely bonding.Insulation adhesive force is promoted to more than 60N by the 10N of routine.When adopting this mode to avoid wire bend, conductor moves situation about exposing.
Because electric wire of the present invention has good pliability, its insulating barrier and conductor closely bonding, electric wire insulation layer can not occur because of bending bouncing back, the high temperature of 125 DEG C of working temperatures can be stood, can be used on the relay in equipment, adapt to contact site on-off switch repeatedly completely, the requirement of alternating bending.Alternative import like product.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric wire of the present invention;
In figure, 1-inner wire; 2-ground floor insulate; The 3-second layer insulate.
Embodiment
Embodiment 1
See Fig. 1, super soft high adhesion force heat-resistant fireproof environmental protection single core cable of the present invention, is made up of inner wire 1 and ground floor insulating barrier 2 and second layer insulating barrier 3 successively, and in the present embodiment, inner wire adopts 24AWG wire gauge (sectional area 0.204mm
2) anaerobic bare copper conductor, stranded external diameter is 0.59mm, and conductor lay is 18 times of conductor strand external diameter.The oxygen-free copper that this wire employing resistance is less is stranded to be formed, and meets GB/T3956-2008 " conductor of cable " standard-required.
Described ground floor insulating barrier is ethene improved-acrylic copolymer, is made up of following material and parts by weight: ethene-vinyl acetate 18, polyethylene 15, hydrotalcite 6, fire retardant 9.6,1010 antioxidant 0.5, titanate coupling agent 0.5, wax 0.1, white oil 0.4, thickening fluid 0.4; During preparation, after first weighing by proportioning, mix and blend, refine after 20 minutes at 120 DEG C, extruded by 35 extruders on 35+65 type two-layer co-extruding extruder, thickness of insulating layer is 0.05mm; This insulating barrier is adhered tightly to outside inner wire; The extrusion temperature of described 35 plastic extruders controls: a district: 125 ~ 135 DEG C; 2nd district: 135 ~ 145 DEG C; 3rd district: 165 DEG C; 4th district: 175 DEG C; Head: 175 DEG C; Eye mould: 170 DEG C;
Described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; By 65 extrusion main units on 35+65 type two-layer co-extruding extruder, through extrusion main unit mixing extrusion, second layer thickness of insulating layer is 0.38mm, and this insulating barrier sticks to ground floor surface of insulating layer, and the extrusion temperature control of described 65 plastic extruders is: a district: 1200 DEG C; 2nd district: 140 DEG C; 3rd district: 150 DEG C; 4th district: 150 DEG C; 5th district: 160 DEG C; 6th district: 160 DEG C; Head: 165 DEG C; Eye mould: 165 DEG C.
Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad; Wire external diameter is 1.40mm.Insulating barrier adhesive force reaches more than 60N, and after irradiation, electric wire can long-term work under the ambient temperature of 125 DEG C.Its mechanical performance, resistance to elevated temperatures and resistance to bending performance meet instructions for use completely.
Embodiment 2
See Fig. 1, super soft high adhesion force heat-resistant fireproof environmental protection single core cable of the present invention, is made up of inner wire 1 and ground floor insulating barrier 2 and second layer insulating barrier 3 successively, and in the present embodiment, inner wire adopts 24AWG wire gauge (sectional area 0.204mm
2), form by 26 0.10mm tinned wirds are stranded.
Described ground floor insulating barrier is ethene improved-acrylic copolymer, is made up of following material and parts by weight: ethene-vinyl acetate 50, polyethylene 30, hydrotalcite 25, fire retardant 35,1010 antioxidant 2, titanate coupling agent 2, wax 1.5, white oil 2, thickening fluid 2; During preparation, after first weighing by proportioning, mix and blend, refine after 20 minutes at 130 DEG C, extruded by 35 extruders on 35+65 type two-layer co-extruding extruder, thickness of insulating layer is 0.05mm; This insulating barrier is adhered tightly to outside inner wire; The extrusion temperature of described 35 plastic extruders controls: a district: 125 ~ 135 DEG C; 2nd district: 135 ~ 145 DEG C; 3rd district: 165 DEG C; 4th district: 175 DEG C; Head: 185 DEG C; Eye mould: 175 DEG C;
Described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; By 65 extrusion main units on 35+65 type two-layer co-extruding extruder, through extrusion main unit mixing extrusion, second layer thickness of insulating layer is 0.38mm, and this insulating barrier sticks to ground floor surface of insulating layer, and the extrusion temperature control of described 65 plastic extruders is: a district: 130 DEG C; 2nd district: 140 DEG C; 3rd district: 150 DEG C; 4th district: 160 DEG C; 5th district: 170 DEG C; 6th district: 170 DEG C; Head: 170 DEG C; Eye mould: 165 DEG C.
Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad; Wire external diameter is 1.40mm.Insulating barrier adhesive force reaches more than 60N, and after irradiation, electric wire can long-term work under the ambient temperature of 125 DEG C.Its mechanical performance, resistance to elevated temperatures and resistance to bending performance meet instructions for use completely.
Embodiment 3
See Fig. 1, super soft high adhesion force heat-resistant fireproof environmental protection single core cable of the present invention, is made up of inner wire 1 and ground floor insulating barrier 2 and second layer insulating barrier 3 successively, and in the present embodiment, inner wire adopts 24AWG wire gauge (sectional area 0.204mm
2) anaerobic bare copper conductor, stranded external diameter is 0.59mm, and conductor lay is 18 times of conductor strand external diameter.The oxygen-free copper that this wire employing resistance is less is stranded to be formed, and meets GB/T3956-2008 " conductor of cable " standard-required.
Described ground floor insulating barrier is ethene improved-acrylic copolymer, is made up of following material and parts by weight: ethene-vinyl acetate 30, polyethylene 25, hydrotalcite 15, fire retardant 25,1010 antioxidant 1.0, titanate coupling agent 1.0, wax 0.8, white oil 1.5, thickening fluid 1.0; During preparation, after first weighing by proportioning, mix and blend, refine after 20 minutes at 125 DEG C, extruded by 35 extruders on 35+65 type two-layer co-extruding extruder, thickness of insulating layer is 0.05mm; This insulating barrier is adhered tightly to outside inner wire; The extrusion temperature of described 35 plastic extruders controls to be a district: 125 ~ 135 DEG C; 2nd district: 135 ~ 145 DEG C; 3rd district: 160 DEG C; 4th district: 170 DEG C; Head: 180 DEG C; Eye mould: 175 DEG C;
Described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; By 65 extrusion main units on 35+65 type two-layer co-extruding extruder, through extrusion main unit mixing extrusion, second layer thickness of insulating layer is 0.38mm, and this insulating barrier sticks to ground floor surface of insulating layer, and the extrusion temperature control of described 65 plastic extruders is: a district: 125 DEG C; 2nd district: 135 DEG C; 3rd district: 145 DEG C; 4th district: 155 DEG C; 5th district: 165 DEG C; 6th district: 165 DEG C; Head: 165 DEG C; Eye mould: 160 DEG C.
Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad; Wire external diameter is 1.40mm.Insulating barrier adhesive force reaches more than 60N, and after irradiation, electric wire can long-term work under the ambient temperature of 125 DEG C.Its mechanical performance, resistance to elevated temperatures and resistance to bending performance meet instructions for use completely.
Electric wire of the present invention and common wiring detection perform parameter lookup table
Testing result illustrates that electric wire of the present invention is better than prior art in insulation adhesive force, insulation tensile strength, elongation at break and softness properties, because electric wire of the present invention has good pliability, its insulating barrier and conductor closely bonding, retraction can not be there is in electric wire insulation layer because of bending, the high temperature of 125 DEG C of working temperatures can be stood, can be used on the relay in equipment, adapt to contact site on-off switch repeatedly completely, the requirement of alternating bending.Alternative import like product.Arrive the object of the invention completely.
Claims (4)
1. a super soft high adhesion force heat-resistant fireproof environmental protection single core cable, be made up of inner wire and ground floor insulating barrier and second layer insulating barrier successively, it is characterized in that: described ground floor insulating barrier is ethene improved-acrylic copolymer, is made up of following material and parts by weight: ethene-vinyl acetate 18 ~ 50, polyethylene 15 ~ 30, hydrotalcite 6 ~ 25, fire retardant 9.6 ~ 35,1010 antioxidant 0.5 ~ 2, titanate coupling agent 0.5 ~ 2, wax 0.1 ~ 1.5, white oil 0.4 ~ 2, thickening fluid 0.4 ~ 2; Described second layer insulating barrier is shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin; Ground floor insulating barrier and second layer insulating barrier are respectively by extruder mixing extrusion, and ground floor insulating barrier is adhered tightly to outside inner wire, and second layer insulating barrier sticks to ground floor surface of insulating layer; Ground floor thickness of insulating layer is 0.05mm, and second layer thickness of insulating layer is 0.38mm; Electric wire after extrusioning shaping, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad, and wire external diameter is 1.40mm.
2. super soft high adhesion force heat-resistant fireproof environmental protection single core cable according to claim 1, is characterized in that: described inner wire adopts 24AWG wire gauge, by 26 0.10mm naked coppers or tinned wird is stranded forms.
3. super soft high adhesion force heat-resistant fireproof environmental protection single core cable according to claim 2, it is characterized in that: described inner wire selects anaerobic bare copper conductor, stranded external diameter is 0.59mm, and conductor lay is 18 times of conductor strand external diameter.
4. the preparation method of super soft high adhesion force heat-resistant fireproof environmental protection single core cable as claimed in claim 1, is characterized in that being made up of following step:
(1) select 24AWG wire gauge, by 26 0.10mm naked coppers or the stranded inner wire of tinned wird;
(2) get the material of ground floor insulating barrier: ethene-vinyl acetate, polyethylene, hydrotalcite, fire retardant, 1010 antioxidant, titanate coupling agent, wax, white oil, thickening fluid, after weighing by proportioning, mix and blend, refine after 20 minutes at 120 ~ 130 DEG C, extruded by 35 extruders on 35+65 type two-layer co-extruding extruder, insulation thickness when extruding is 0.05mm; This insulating barrier is adhered tightly to outside inner wire; The extrusion temperature of described 35 extruders controls: a district: 125 ~ 135 DEG C; 2nd district: 135 ~ 145 DEG C; 3rd district: 150 ~ 165 DEG C; 4th district: 165 ~ 175 DEG C; Head: 175 ~ 185 DEG C; Eye mould: 170 ~ 175 DEG C;
(3) get second layer insulating barrier material: shore hardness 60A soft low smoke and zero halogen cross-linking radiation polyolefin, by 65 extrusion main units on 35+65 type two-layer co-extruding extruder, through extrusion main unit mixing extrusion, second layer thickness of insulating layer is 0.38mm, this insulating barrier sticks to ground floor surface of insulating layer, and the wire external diameter after extrusioning shaping is 1.40mm; The extrusion temperature of described 65 extrusion main units controls: a district: 120 ~ 130 DEG C; 2nd district: 130 ~ 140 DEG C; 3rd district: 140 ~ 150 DEG C; 4th district: 150 ~ 160 DEG C; 5th district: 160 ~ 170 DEG C; 6th district: 160 ~ 170 DEG C; Head: 165 ~ 170 DEG C; Eye mould: 160 ~ 165 DEG C;
(4) the electric wire after extruding, carries out cross-linking radiation by electron accelerator to it, and irradiation dose is 8Mrad; Insulating barrier adhesive force reaches more than 60N.
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| CN104616834B (en) * | 2015-01-19 | 2017-02-01 | 远东电缆有限公司 | Special radiation device for cable for smart power supply and radiation method |
| CN105280301A (en) * | 2015-12-03 | 2016-01-27 | 金杯电工衡阳电缆有限公司 | Power cable used for thermal fusion |
| CN107369503A (en) * | 2017-08-04 | 2017-11-21 | 远东电缆有限公司 | Wisdom energy wind-powered electricity generation light-duty fire-retardant midium voltage cable of environmentally friendly oil resistant and production technology |
| CN109473219A (en) * | 2018-09-03 | 2019-03-15 | 航天瑞奇电缆有限公司 | Super soft heat resist modification polyvinyl chloride flame-proof environmental protection road vehicle high-tension cable and preparation method |
| JP7334629B2 (en) * | 2020-01-21 | 2023-08-29 | 株式会社プロテリアル | Twisted pair cable and multicore cable |
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| JP2011052152A (en) * | 2009-09-03 | 2011-03-17 | Hitachi Cable Ltd | Composition of conductive rubber |
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| CN101213244A (en) * | 2005-04-29 | 2008-07-02 | 埃克森美孚化学专利公司 | Method to make an article comprising polymer concentrate |
| CN101248135A (en) * | 2005-06-24 | 2008-08-20 | 埃克森美孚化学专利公司 | Plasticized functionalized propylene copolymer adhesive composition |
| CN103289177A (en) * | 2012-03-02 | 2013-09-11 | 滁州格美特科技有限公司 | Environment-friendly degradation modified linear low density polyethylene foam material and preparation method thereof |
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