CN107610811A - A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof - Google Patents
A kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof Download PDFInfo
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- CN107610811A CN107610811A CN201710970418.9A CN201710970418A CN107610811A CN 107610811 A CN107610811 A CN 107610811A CN 201710970418 A CN201710970418 A CN 201710970418A CN 107610811 A CN107610811 A CN 107610811A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 17
- 238000001192 hot extrusion Methods 0.000 claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 14
- 239000012764 mineral filler Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 20
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims description 11
- 229920000299 Nylon 12 Polymers 0.000 claims description 11
- 229920000098 polyolefin Polymers 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 8
- 239000011295 pitch Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 150000003254 radicals Chemical class 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000006378 damage Effects 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241000283984 Rodentia Species 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The invention discloses a kind of rat-and-ant proof, height radiating photovoltaic cable and preparation method thereof, include cable core, low thermal resistance mineral filler, hot extrusion magnesium alloy heat radiation pipe, band, rat-and-ant proof sheath and outer jacket, the cable core, low thermal resistance mineral filler, hot extrusion magnesium alloy heat radiation pipe, band, rat-and-ant proof sheath (extruding layer and zinc-plated thin round steel wire armor) and outer jacket are set gradually from inside to outside in order, the cable core includes red, black two insulated wire cores, and it is placed in parallel, insulated wire cores are made up of conductor layer and insulating barrier, insulating barrier is arranged on the outside of conductor layer.Cable of the present invention has the excellent properties such as excellent LSZH, low heating, resistance to ultraviolet, resistance to environment, low temperature resistant, wet-heat resisting, ageing-resistant, meets that cable service life requires for 30 years, and structure is soft, and bending radius is small, meets that various environment layings require.Used especially suitable for bad environments and the occasion for having rat-and-ant proof requirement.
Description
Technical field
The present invention relates to a kind of cable and preparation method thereof, particularly a kind of rat-and-ant proof, high radiating photovoltaic cable and its system
Preparation Method.
Background technology
Current most of photovoltaic cable does not possess rat-and-ant proof and heat dispersion, the photovoltaic electric for partly possessing rat-and-ant proof requirement
Cable, it is also most that rat-and-ant proof masterbatch mode is added using steel-tape armouring or in sheath material, so as to meet cable rat-and-ant proof performance.
Using steel-tape armouring mode, cable needs to increase inner liner, causes cable cost to increase, and during flat cable armouring, also easily occurs
Bottom pour ladle phenomenon, and band-armored bending radius is larger, is made troubles to construction and installation；It is anti-using being added in sheath material
Mouse ant masterbatch mode, cable penetrating odor is larger, is made troubles to production and workmen, and market is unwilling that receiving this kind prevents
Mouse ant mode.It is well known that electric energy transmits in cable core can produce loss, this loss is mainly converted into radiation loss, this
It the heating of transmission cable core is easily caused harm but also the utilization rate and current-carrying capacity of cable of electric energy can be substantially reduced.With reference to city
Field demand and present situation on product, exploitation environment protection, rat ant, high radiating cable are extremely urgent, and product improves same in technical performance
When, and product cost is high, meets the market demand, can widely popularize.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of rat-and-ant proof, high radiating photovoltaic cable and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of rat-and-ant proof, high radiating photovoltaic electric
Cable, including conductor, insulating barrier, low thermal resistance mineral filler, hot extrusion magnesium alloy heat radiation pipe, cable core, band, rat-and-ant proof shield
Layer and outer jacket；
Cable core and hot extrusion magnesium alloy heat radiation pipe are provided with the band, and is filled out by low thermal resistance mineral filler
Fill；The cable core includes red, black two insulated wire cores, and is placed in parallel, and the insulated wire cores are made up of conductor layer and insulating barrier,
Insulating barrier is arranged on the outside of conductor layer；
Rat-and-ant proof sheath and outer jacket are cased with successively from inside to outside outside the band；The rat-and-ant proof sheath includes rat-and-ant proof
Extruding layer and the zinc-plated thin round steel wire armor of rat-and-ant proof, the rat-and-ant proof extruding layer are externally provided with the zinc-plated thin round steel wire armouring of rat-and-ant proof
Layer.
Further, described rat-and-ant proof extruding layer uses nylon 12 material；Described rat-and-ant proof extruding layer and rat-and-ant proof
By squeezing, pipe mode extrudes zinc-plated thin round steel wire armor and braiding is made respectively.
Further, described low thermal resistance mineral filler and hot extrusion magnesium alloy heat radiation pipe composition radiator portion,
Described low thermal resistance mineral filler is using the excellent low thermal resistance light magnesium oxide of heat conductivility；Described hot extrusion magnesium alloy
Radiating circular tube carries out the hot extrusion magnesium alloy circular tube of peroxidating processing using surface, has light weight, thermal conductivity height and intensity high
The advantages of, cold air can be passed through or water takes away cable core heat, improve cable core current-carrying capacity.
Further, described outer jacket uses irradiation type low-smoke halide-free fireproof composite polyolefine material, has resistance to ultraviolet, resistance to ring
The excellent properties such as border, low temperature resistant, wet-heat resisting, ageing-resistant, meet that cable service life requires for 30 years.
Further, the conductor layer is twisted by more thin tinned copper wire according to normally ordering and layered mode, is twisted
Pitch control is closed at 12~16 times.
The preparation method of described rat-and-ant proof, high radiating photovoltaic cable, comprises the following steps：
Step 1, conductor makes：More thin tinned copper wire is pressed into normally ordering, and is made by twisting and led with 12~16 times of pitches
Body core；
Step 2, insulated wire cores make：Insulated wire cores are made in self centring extrusion die extruded insulation layer, and insulating materials is spoke
According to type low smoke halogen-free flame-retardant polyolefin, insulation average thickness is not less than nominal value, and thinnest point thickness is not less than nominal value 90%-
0.1mm；Plsitive mold, core rod die sleeve size proportioning calculate as follows：
Passed through in core rod：D cores=D0+ △
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.2~
0.5mm；
Step 3, irradiation processing：Insulated wire cores need to use electron irradiation equipment to carry out irradiation processing, utilize electron accelerator
Caused high-power electron beam bombards insulating barrier, and strand is interrupted to form high molecular free radical, and then high molecular free radical is again
Cross-bond is combined into, so that original linearity molecular structure becomes three-dimensional netted molecular structure and forms crosslinking, makes cable
Environmental protection is provided with, safety, the features such as long lifespan；Next procedure production is carried out again after insulation irradiation, is advantageous to nylon 12 material
Extrusion, and will not be adhered；
Step 4, rat-and-ant proof sheath：Being extruded and formed using special flat tubular molding tool, rat-and-ant proof layer material is nylon 12,
During extrusion, insulated wire cores needed talcum powder, and extruded velocity should be uniform, constant, and speed is unsuitable too fast or excessively slow, avoids causing to insulate
Damage；Rat-and-ant proof layer thickness control is counted as follows in 0.3~0.5mm, tubular molding tool, core rod die sleeve size proportioning
Calculate：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.4~
1.0mm；
Step 5, oversheath is extruded：Oversheath is extruded using irradiation type low-smoke halide-free fireproof composite polyolefine material and formed, and is used
Mould fashion of extrusion is extruded, and extrusion thickness should accord with nominal thickness requirement, extrudes external diameter rounding, and thinnest point thickness is thick not less than nominal
The 85%-0.1mm of degree；During extrusion, cable core needed talcum powder；Core rod die sleeve size proportioning calculates as follows：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.3~
1.0mm；
Step 6, irradiation processing：Ibid.
The present invention compared with prior art, has advantages below and effect：
1st, conductor of the invention uses more thin tinned copper wire according to regular twisted arrangement mode, with 12~16 pitch times
Number is twisted, the smooth rounding of the conductor and pliability height.
2nd, insulating barrier is extruded using irradiation type low-smoke halide-free fireproof composite polyolefine material fashion of extrusion and formed, structural cable resistance
It is good to fire performance, temperature resistant grade is high, and fashion of extrusion is extruded, and conductor is close with insulated combination, and long-term use of stability is good.
3rd, rat-and-ant proof sheath uses nylon 12 material, extrudes and is made by squeezing pipe mode, have good rat-and-ant proof performance,
Environmental protection, bending radius are small, easy to process, and manufacturing cost is relatively low, cost-effective.
4th, outer jacket uses irradiation type low-smoke halide-free fireproof composite polyolefine material, have LSZH, resistance to ultraviolet, resistance to environment,
The excellent properties such as low temperature resistant, wet-heat resisting, ageing-resistant, meet that cable service life requires for 30 years.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of rat-and-ant proof photovoltaic cable of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
As shown in figure 1, a kind of rat-and-ant proof, high radiating photovoltaic cable, including conductor 1, insulating barrier 2, low thermal resistance are mineral-filled
Material 3, hot extrusion magnesium alloy heat radiation pipe 4, cable core 5, band 6, rat-and-ant proof sheath and outer jacket 9；
Cable core 5 and hot extrusion magnesium alloy heat radiation pipe 4 are provided with the band 6, and is entered by low thermal resistance mineral filler 3
Row filling；The cable core 5 includes red, black two insulated wire cores, and is placed in parallel, and the insulated wire cores are by conductor layer 1 and insulation
Layer 2 forms, and insulating barrier 2 is arranged on the outside of conductor layer 1；
Rat-and-ant proof sheath and outer jacket 9 are cased with successively from inside to outside outside the band 6；The rat-and-ant proof sheath includes protection against rodents
Ant extruding layer 7 and the zinc-plated thin round steel wire armor 8 of rat-and-ant proof, the rat-and-ant proof extruding layer 7 is externally provided with the zinc-plated thin round steel of rat-and-ant proof
Silk armor 8.
Described rat-and-ant proof extruding layer 7 uses nylon 12 material；Described rat-and-ant proof extruding layer 7 and the zinc-plated thin circle of rat-and-ant proof
By squeezing, pipe mode extrudes steel wire armor layer 8 and braiding is made respectively.
Described low thermal resistance mineral filler 3 and hot extrusion magnesium alloy heat radiation pipe 4 form radiator portion, and described is low
Thermal resistance mineral filler 3 is using the excellent low thermal resistance light magnesium oxide of heat conductivility；Described hot extrusion magnesium alloy heat radiation circle
Pipe 4 carries out the hot extrusion magnesium alloy circular tube of peroxidating processing using surface, has that light weight, thermal conductivity are high and that intensity is high is excellent
Point, can be passed through cold air or water takes away cable core heat, improve cable core current-carrying capacity.
Described outer jacket 9 uses irradiation type low-smoke halide-free fireproof composite polyolefine material, has resistance to ultraviolet, resistance to environment, resistance to low
The excellent properties such as temperature, wet-heat resisting, ageing-resistant, meet that cable service life requires for 30 years.
The conductor layer 1 is twisted by more thin tinned copper wire according to normally ordering and layered mode, twisting pitch control
System is at 12~16 times.
The preparation method of described rat-and-ant proof, high radiating photovoltaic cable, comprises the following steps：
Step 1, conductor makes：More thin tinned copper wire is pressed into normally ordering, and is made by twisting and led with 12~16 times of pitches
Body core；
Step 2, insulated wire cores make：Insulated wire cores are made in self centring extrusion die extruded insulation layer, and insulating materials is spoke
According to type low smoke halogen-free flame-retardant polyolefin, insulation average thickness is not less than nominal value, and thinnest point thickness is not less than nominal value 90%-
0.1mm；Plsitive mold, core rod die sleeve size proportioning calculate as follows：
Passed through in core rod：D cores=D0+ △
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.2~
0.5mm；
Step 3, irradiation processing：Insulated wire cores need to use electron irradiation equipment to carry out irradiation processing, utilize electron accelerator
Caused high-power electron beam bombards insulating barrier, and strand is interrupted to form high molecular free radical, and then high molecular free radical is again
Cross-bond is combined into, so that original linearity molecular structure becomes three-dimensional netted molecular structure and forms crosslinking, makes cable
Environmental protection is provided with, safety, the features such as long lifespan；Next procedure production is carried out again after insulation irradiation, is advantageous to nylon 12 material
Extrusion, and will not be adhered；
Step 4, rat-and-ant proof sheath：Being extruded and formed using special flat tubular molding tool, rat-and-ant proof layer material is nylon 12,
During extrusion, insulated wire cores needed talcum powder, and extruded velocity should be uniform, constant, and speed is unsuitable too fast or excessively slow, avoids causing to insulate
Damage；Rat-and-ant proof layer thickness control is counted as follows in 0.3~0.5mm, tubular molding tool, core rod die sleeve size proportioning
Calculate：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.4~
1.0mm；
Step 5, oversheath is extruded：Oversheath is extruded using irradiation type low-smoke halide-free fireproof composite polyolefine material and formed, and is used
Mould fashion of extrusion is extruded, and extrusion thickness should accord with nominal thickness requirement, extrudes external diameter rounding, and thinnest point thickness is thick not less than nominal
The 85%-0.1mm of degree；During extrusion, cable core needed talcum powder；Core rod die sleeve size proportioning calculates as follows：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span be 0.3~
1.0mm；
Step 6, irradiation processing：Ibid.
So, conductor layer of the present invention by conductor using more thin tinned copper wire according to regular twisted arrangement mode, with 12~
16 pitch multiples are twisted, and so as to ensure that the smooth rounding of conductor and pliability are high, tin layers can prevent cable corrosion；When insulating exruded
Extruded and formed using self centring extrusion die, which extrusion, conductor is close with insulated combination, and long-term use of stability is good；Absolutely
After edge core irradiation processing, red, black insulated wire cores are placed in parallel, squeezing pipe mode using special flat mould extrudes rat-and-ant proof layer
(nylon 12), during extrusion, insulated wire cores cross talcum powder, and extruded velocity should be uniform, constant；Outer jacket uses flat mould extruding side
Formula extrudes, and during extrusion, cable core crosses talcum powder, finally carries out irradiation processing to outer jacket, with improve its mechanical performance, electrical property and
Service life.Used especially suitable for bad environments and the occasion for having rat-and-ant proof requirement.
Above content described in this specification is only illustration made for the present invention.Technology belonging to the present invention
The technical staff in field can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, only
Will without departing from description of the invention content or surmount scope defined in the claims, all should belong to the present invention guarantor
Protect scope.
Claims (6)
1. a kind of rat-and-ant proof, high radiating photovoltaic cable, it is characterised in that：Filled out including conductor (1), insulating barrier (2), low thermal resistance mineral
Fill material (3), hot extrusion magnesium alloy heat radiation pipe (4), cable core (5), band (6), rat-and-ant proof sheath and outer jacket (9)；
Cable core (5) and hot extrusion magnesium alloy heat radiation pipe (4) are provided with the band (6), and by low thermal resistance mineral filler
(3) it is filled；The cable core (5) includes red, black two insulated wire cores, and is placed in parallel, and the insulated wire cores are by conductor layer
(1) it is arranged on insulating barrier (2) composition, insulating barrier (2) on the outside of conductor layer (1)；
The band (6) is cased with rat-and-ant proof sheath and outer jacket (9) successively from inside to outside outside；The rat-and-ant proof sheath includes protection against rodents
Ant extruding layer (7) and the zinc-plated thin round steel wire armor (8) of rat-and-ant proof, it is zinc-plated that the rat-and-ant proof extruding layer (7) is externally provided with rat-and-ant proof
Thin round steel wire armor (8).
2. according to the rat-and-ant proof described in claim 1, high radiating photovoltaic cable, it is characterised in that：Described rat-and-ant proof extruding layer
(7) nylon 12 material is used；Described rat-and-ant proof extruding layer (7) and the zinc-plated thin round steel wire armor (8) of rat-and-ant proof pass through respectively
Crowded pipe mode extrudes and braiding is made.
3. according to the rat-and-ant proof described in claim 1, high radiating photovoltaic cable, it is characterised in that：Described low thermal resistance mineral are filled out
Material (3) and hot extrusion magnesium alloy heat radiation pipe (4) composition radiator portion are filled, described low thermal resistance mineral filler (3) is adopted
With the excellent low thermal resistance light magnesium oxide of heat conductivility；Described hot extrusion magnesium alloy heat radiation pipe (4) was carried out using surface
The hot extrusion magnesium alloy circular tube of oxidation processes, there is the advantages of light weight, thermal conductivity height and intensity is high, cold air or water can be passed through
Cable core heat is taken away, improves cable core current-carrying capacity.
4. according to the rat-and-ant proof described in claim 1, high radiating photovoltaic cable, it is characterised in that：Described outer jacket (9) uses
Irradiation type low-smoke halide-free fireproof composite polyolefine material, there is the superiority such as resistance to ultraviolet, resistance to environment, low temperature resistant, wet-heat resisting, ageing-resistant
Can, meet that cable service life requires for 30 years.
5. according to the rat-and-ant proof described in claim 1, high radiating photovoltaic cable, it is characterised in that：The conductor layer (1) is by more
Thin tinned copper wire is twisted according to normally ordering and layered mode, and twisting pitch is controlled at 12~16 times.
6. rat-and-ant proof, the preparation method of high radiating photovoltaic cable described in a kind of claim 1, it is characterised in that：Including as follows
Step：
Step 1, conductor makes：More thin tinned copper wire is pressed into normally ordering, and conductor lines are made by twisting with 12~16 times of pitches
Core；
Step 2, insulated wire cores make：Insulated wire cores are made in self centring extrusion die extruded insulation layer, and insulating materials is irradiation type
Low smoke halogen-free flame-retardant polyolefin, insulation average thickness are not less than nominal value, and thinnest point thickness is not less than nominal value 90%-0.1mm；
Plsitive mold, core rod die sleeve size proportioning calculate as follows：
Passed through in core rod：D cores=D0+ △
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span is 0.2~0.5mm；
Step 3, irradiation processing：Insulated wire cores need to use electron irradiation equipment to carry out irradiation processing, be produced using electron accelerator
High-power electron beam bombardment insulating barrier, strand is interrupted to form high molecular free radical, then high molecular free radical reconfigures
Into cross-bond, so that original linearity molecular structure becomes three-dimensional netted molecular structure and forms crosslinking, there is cable
Environmental protection, safety, the features such as long lifespan；Next procedure production is carried out again after insulation irradiation, is advantageous to the extrusion of nylon 12 material,
And it will not be adhered；
Step 4, rat-and-ant proof sheath：Extruded and formed using special flat tubular molding tool, rat-and-ant proof layer material is nylon 12, extrusion
When, insulated wire cores needed talcum powder, and extruded velocity should be uniform, constant, and speed is unsuitable too fast or excessively slow, avoided causing insulation to damage
Wound；Rat-and-ant proof layer thickness control calculates as follows in 0.3~0.5mm, tubular molding tool, core rod die sleeve size proportioning：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span is 0.4~1.0mm；
Step 5, oversheath is extruded：Oversheath is extruded using irradiation type low-smoke halide-free fireproof composite polyolefine material and formed, using mould
Fashion of extrusion is extruded, and extrusion thickness should accord with nominal thickness requirement, extrudes external diameter rounding, thinnest point thickness is not less than nominal thickness
85%-0.1mm；During extrusion, cable core needed talcum powder；Core rod die sleeve size proportioning calculates as follows：
Passed through in core rod：D cores=D0+ △；
Passed through in die sleeve：Outside D=D0+2 × δ × 1.05+ △；
Wherein：D0 is core external diameter before extrusion, and △ is value of magnification, and δ is insulation thickness；△ span is 0.3~1.0mm；
Step 6, irradiation processing：Ibid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887655A (en) * | 2019-04-11 | 2019-06-14 | 苏州科宝光电科技有限公司 | Distributed photovoltaic power generation cable |
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Application publication date: 20180119 |