阅读说明：本技术 一种耐火防腐蚀的铝合金电缆及其制备方法 (A kind of etch-proof aluminium alloy cable of fire resisting and preparation method thereof ) 是由 不公告发明人 于 2019-07-31 设计创作，主要内容包括：本发明公开了一种耐火防腐蚀的铝合金电缆,包括缆线内芯,所述缆线内芯的外侧设置有填充橡胶层,且填充橡胶层的外侧固定安装有装覆层,并且装覆层的外壁上设置有隔离橡胶,所述隔离橡胶的外侧设置有连接层,且隔离橡胶通过连接层与绝缘层的内侧相互连接。该耐火防腐蚀的铝合金电缆的制备方法,制备缆线内芯,填充橡胶层与装覆层的挤塑成型,隔离橡胶的安装固定,设置连接层连接绝缘层,电缆的整体成型,能够极大的提高铝合金电缆使用的耐火和防腐蚀性能,在工作使用中有效避免铝合金电缆高温受热造成的外表使用劳损,具有良好的使用阻燃性,有效杜绝外界环境因素造成的腐蚀性,延长电缆的使用寿命。(The invention discloses a kind of etch-proof aluminium alloy cables of fire resisting, including cable inner core, filled rubber layer is provided on the outside of the cable inner core, and dress coating is fixedly installed on the outside of filled rubber layer, and it fills and is provided with isolation rubber on the outer wall of coating, it is provided with articulamentum on the outside of the isolation rubber, and rubber is isolated and is connected with each other by the inside of articulamentum and insulating layer.The preparation method of the etch-proof aluminium alloy cable of the fire resisting, prepare cable inner core, the extrusion moulding of filled rubber layer and dress coating, the installation of isolation rubber is fixed, articulamentum is set and connects insulating layer, cable it is integrally formed, the fire resisting and Corrosion Protection that aluminium alloy cable uses can greatly be improved, appearance caused by aluminium alloy cable high-temperature heating is effectively avoided to use strain in work use, anti-flammability is used with good, effectively prevent corrosivity caused by outside environmental elements, extends the service life of cable.)

1. a kind of etch-proof aluminium alloy cable of fire resisting, including cable inner core (1), it is characterised in that: the cable inner core (1) Outside is provided with filled rubber layer (2), and dress coating (3) is fixedly installed on the outside of filled rubber layer (2), and fill coating (3) it is provided with isolation rubber (4) on outer wall, is provided with articulamentum (5) on the outside of the isolation rubber (4), and rubber is isolated (4) it is connected with each other by the inside of articulamentum (5) and insulating layer (6).

2. the etch-proof aluminium alloy cable of a kind of fire resisting according to claim 1, it is characterised in that: the cable inner core (1) it is made of interior single line (101), intermediate single line (102) and outer single line (103) three parts, and interior single line (101), intermediate single line (102) and the diameter of outer single line (103) is 40mm, and the root of interior single line (101), intermediate single line (102) and outer single line (103) Number is respectively 1,6 and 12, and interior single line (101), intermediate single line (102) and outer single line (103) lay ratio by it is interior extremely It successively reduces outside.

3. the etch-proof aluminium alloy cable of a kind of fire resisting according to claim 1, it is characterised in that: the filled rubber layer It (2) is extrusion molding setting with dress coating (3), and the material of filled rubber layer (2) and dress coating (3) is respectively polyethylene rubber Glue and polyolefin semiconductor material extrusion moulding, and filled rubber layer (2) is the equal 0.6mm- of thickness with dress coating (3) 1.0mm。

4. the etch-proof aluminium alloy cable of a kind of fire resisting according to claim 1, it is characterised in that: the isolation rubber (4) it is arranged for Ceramic silicon rubber composite band, and is isolated on the outside of rubber (4) and is provided with tin plating aluminium wire sheath, and rubber is isolated The thickness of glue (4) is set as 0.6-1.5mm.

5. the etch-proof aluminium alloy cable of a kind of fire resisting according to claim 1, it is characterised in that: the articulamentum (5) It is set as reticular structure, and the insulating layer (6) on the outside of articulamentum (5) is the setting of high pressure polyethylene extrusion moulding, and insulating layer (6) it is handled through chemical crosslinking, and with a thickness of between 3.5-4mm.

6. a kind of preparation method of the etch-proof aluminium alloy cable of fire resisting, which comprises the following steps:

S1, cable inner core is prepared, by the rounded aluminium alloy single line in 19 sections in 1/6/12 distribution, makes its twisted molding, system At the circular configuration closely pressed, the twisting speed of the single line of aluminium alloy is 30m/min, working tension be 2000-6000N it Between；

The extrusion moulding of S2, filled rubber layer and dress coating, using conventional SJ120 extruder, by polyethylene rubber and polyene Hydrocarbon semiconductor material extrusion moulding, the operating temperature of SJ120 extruder are between 120-250 DEG C, and the feeding section of extruder is extremely The temperature for squeezing out head successively increases, and extrusion net mesh is 500 mesh, and extruded velocity is 40-50m/min；

S3, the installation that rubber is isolated are fixed, in the outside of dress coating spliced fixed Ceramic silicon rubber composite band setting every From rubber, splice temperature and maintain between 60-75 DEG C, and the Ceramic silicon rubber composite band cladding after splicing is fixed is tin plating Aluminium wire sheath, tin plating aluminium wire sheath are the double-deck synchronous package setting；

S4, setting articulamentum connect insulating layer, the cable obtained after step S2-3 is placed in vaporium, adjust vapor (steam) temperature and Indoor pressure, the temperature of steam are not less than 120 DEG C, and pressure is greater than 0.1MPa, vapor action 6-8h, then include in isolation rubber The extrusion moulding of insulating layer is directly carried out after package articulamentum, the use of extruding machine and parameter regulation are referring to S2；

S5, cable it is integrally formed, by after extrusion moulding insulating layer and cable be chemically crosslinked, cross-linked dosage control exists 20-45Mrad, the holding temperature of crosslinking are 60-80 DEG C, keep the temperature duration 8-16h, and the nitrogen pressure 0.05- of local environment 0.15MPa。

7. a kind of preparation method of the etch-proof aluminium alloy cable of fire resisting according to claim 6, it is characterised in that: described S1 prepares the close-packed arrays that aluminium alloy single line in cable inner core is 3 rows, and intermediate single line and outer single line are contrary spiral It is twisted, and it is between 200-350 DEG C that the work of aluminium alloy single line, which is twisted temperature, and handling duration is no more than 8h.

8. a kind of preparation method of the etch-proof aluminium alloy cable of fire resisting according to claim 6, it is characterised in that: described Filled rubber layer is the synchronous extrusion forming of double-layer coextrusion with the extrusion molding of dress coating in S2, and the two thickness is equal, on the outside of dress coating Isolation rubber be Embedded to be fixedly connected.

9. a kind of preparation method of the etch-proof aluminium alloy cable of fire resisting according to claim 6, it is characterised in that: described Isolation rubber in S3 is along the circumferential direction spliced in the outside of dress coating, and the inner wall of rubber and the arc of dress coating is isolated Outer wall is adapted, and is filled the tin plating aluminium wire sheath on the outside of coating and be arranged in mesh-like.

10. a kind of preparation method of the etch-proof aluminium alloy cable of fire resisting according to claim 6, it is characterised in that: institute It is 1.5-2.5% that the insulating layer in S4-5, which is stated, in the mass percent of the carbon black content after chemical crosslinking is handled inside it, and The chemical crosslinking is operated using crosslinked with silicane.

Technical field

The present invention relates to the etch-proof aluminium alloy cable technical field of fire resisting, specially a kind of etch-proof aluminium alloy of fire resisting Cable and preparation method thereof.

Background technique

Aluminium alloy cable is a kind of novel practical high energy-saving environment protection green conducting electric power cable, is real with aluminum alloy materials With conductor, press and make annealing treatment through special, have it is good using conductive and energy saving, compared with traditional copper core cable, In electric property having the same, the economic cost output of production is lower than copper core cable cost for the use of aluminium alloy cable Half uses light weight, and flexibility is stronger, conveniently installs and uses, while installation operation being facilitated to reduce the economic cost installed.

However existing aluminium alloy cable has the following problems when in use:

Do not have good fire resisting and corrosion resistance, is being easy to happen appearance corrosion impact internal electric when used for a long time The normal use of structure, while when encountering the flame calcination in hot weather and particular surroundings, the easy spontaneous combustion damage of exocuticle, Cause conducting electrical of aluminium alloy cable itself impaired, while influencing the normal use of aluminium alloy cable, causes aluminium alloy electric Propagation of flame caused by cable burns is connected to damage with integrated circuit, causes serious economic asset and personal safety hidden danger, exists The practicability deficiency problem used.In view of the above-mentioned problems, being badly in need of carrying out innovative design on the basis of original aluminium alloy cable.

Summary of the invention

It is above-mentioned to solve the purpose of the present invention is to provide etch-proof aluminium alloy cable of a kind of fire resisting and preparation method thereof Background technique proposes that existing aluminium alloy cable does not have good fire resisting and corrosion resistance, is being easy to happen when used for a long time The normal use of appearance corrosion impact internal electrical structure, while encountering the flame calcination in hot weather and particular surroundings When, the easy spontaneous combustion damage of exocuticle causes conducting electrical of aluminium alloy cable itself impaired, while influencing aluminium alloy cable Normal use, propagation of flame caused by causing aluminium alloy cable to burn are connected to damage with integrated circuit, cause serious economic wealth The problem of producing with personal safety hidden danger.

To achieve the above object, the invention provides the following technical scheme: a kind of etch-proof aluminium alloy cable of fire resisting, including Cable inner core is provided with filled rubber layer on the outside of the cable inner core, and is fixedly installed with dress on the outside of filled rubber layer and covers Layer, and fill and be provided with isolation rubber on the outer wall of coating, articulamentum, and isolation rubber are provided on the outside of the isolation rubber It is connected with each other by the inside of articulamentum and insulating layer.

Preferably, the cable inner core is made of interior single line, intermediate single line and outer single line three parts, and interior single line, centre The diameter of single line and outer single line is 40mm, and the radical of interior single line, intermediate single line and outer single line is respectively 1,6 and 12 Root, and interior single line, intermediate single line and outer single line lay ratio are successively reduced from the inside to the outside.

Preferably, the filled rubber layer and dress coating are extrusion molding setting, and filled rubber layer and dress coating Material is respectively polyethylene rubber and polyolefin semiconductor material extrusion moulding, and filled rubber layer and dress coating are thickness phase Deng 0.6mm-1.0mm.

Preferably, the isolation rubber is the setting of Ceramic silicon rubber composite band, and is isolated on the outside of rubber and is provided with plating Tin aluminium wire sheath, and the thickness that rubber is isolated is set as 0.6-1.5mm.

Preferably, the articulamentum is set as reticular structure, and the insulating layer on the outside of articulamentum is high pressure polyethylene extrusion molding Molding setting, and insulating layer is handled through chemical crosslinking, and with a thickness of between 3.5-4mm.

A kind of preparation method of the etch-proof aluminium alloy cable of fire resisting, comprising the following steps:

S1, cable inner core is prepared, by the rounded aluminium alloy single line in 19 sections in 1/6/12 distribution, is twisted into it Type, is made the circular configuration closely pressed, and the twisting speed of the single line of aluminium alloy is 30m/min, working tension 2000- Between 6000N；

The extrusion moulding of S2, filled rubber layer and dress coating, using conventional SJ120 extruder, by polyethylene rubber and Polyolefin semiconductor material extrusion moulding, the operating temperature of SJ120 extruder are between 120-250 DEG C, and the feeding of extruder Section to the temperature for squeezing out head successively increases, and extrusion net mesh is 500 mesh, and extruded velocity is 40-50m/min；

S3, the installation that rubber is isolated are fixed, in the spliced fixed Ceramic silicon rubber composite band setting in the outside of dress coating Isolation rubber, splicing temperature maintains between 60-75 DEG C, and the Ceramic silicon rubber composite band cladding after splicing is fixed Tin plating aluminium wire sheath, tin plating aluminium wire sheath are the double-deck synchronous package setting；

S4, setting articulamentum connect insulating layer, and the cable obtained after step S2-3 is placed in vaporium, steam temperature is adjusted Degree and indoor pressure, the temperature of steam are not less than 120 DEG C, and pressure is greater than 0.1MPa, vapor action 6-8h, then in isolation rubber Extrusion moulding including directly carrying out insulating layer after package articulamentum, the use of extruding machine and parameter regulation are referring to S2；

S5, cable it is integrally formed, by after extrusion moulding insulating layer and cable be chemically crosslinked, cross-linked dosage control In 20-45Mrad, the holding temperature of crosslinking is 60-80 DEG C, keeps the temperature duration 8-16h, and the nitrogen pressure of local environment 0.05-0.15MPa。

Preferably, the S1 prepares the close-packed arrays that aluminium alloy single line in cable inner core is 3 rows, and intermediate single line and outer list Line is twisted for contrary spiral, and it is between 200-350 DEG C that the work of aluminium alloy single line, which is twisted temperature, and handling duration is not More than 8h.

Preferably, synchronous extrusion forming of the filled rubber layer with the extrusion molding of dress coating for double-layer coextrusion, the two in the S2 Thickness is equal, and filling the isolation rubber on the outside of coating is Embedded be fixedly connected.

Preferably, the isolation rubber in the S3 is along the circumferential direction spliced in the outside of dress coating, and rubber is isolated Inner wall with dress coating arc outer wall be adapted, and fill the tin plating aluminium wire sheath on the outside of coating in mesh-like setting.

Preferably, quality percentage of the insulating layer in the S4-5 in the carbon black content after chemical crosslinking is handled inside it Than for 1.5-2.5%, and the chemical crosslinking is operated using crosslinked with silicane.

Compared with prior art, the beneficial effects of the present invention are: the etch-proof aluminium alloy cable of the fire resisting and its preparation side Method can greatly improve fire resisting and Corrosion Protection that aluminium alloy cable uses, effectively avoid aluminium alloy in work use Appearance caused by cable high-temperature is heated effectively avoids cable caused by extraneous flame from lighting using strain when by flame calcination, With it is good use anti-flammability, avoid aluminium alloy by appearance caused by flame problem burn, caused by fire spreading influence The normal use of cable, while can greatly be avoided outer with anticorrosive property that is good anti-pull and using when in use Cable appearance caused by boundary's environmental factor is buried for a long time or corrosion failure when aerial suspension, can effectively prevent external environment because The influence of element, extends the service life of cable, utilizes the personal safety as well as the property safety at the normal use protection present position of cable.

Detailed description of the invention

Fig. 1 is positive structure schematic of the present invention；

Fig. 2 is present invention isolation rubber structure schematic diagram.

In figure: 1, cable inner core；101, interior single line；102, intermediate single line；103, outer single line；2, filled rubber layer；3, it fills Coating；4, rubber is isolated；5, articulamentum；6, insulating layer.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.