CN104217799A - Flexible composite cable and preparation method thereof - Google Patents
Flexible composite cable and preparation method thereof Download PDFInfo
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- CN104217799A CN104217799A CN201410431084.4A CN201410431084A CN104217799A CN 104217799 A CN104217799 A CN 104217799A CN 201410431084 A CN201410431084 A CN 201410431084A CN 104217799 A CN104217799 A CN 104217799A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title abstract description 13
- 239000003063 flame retardant Substances 0.000 claims abstract description 74
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 48
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 48
- 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 abstract description 37
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 33
- 238000012856 packing Methods 0.000 claims abstract description 30
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920000098 polyolefin Polymers 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 45
- -1 compound rare-earth Chemical class 0.000 claims description 39
- 230000002195 synergetic effect Effects 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 17
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 15
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 11
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 11
- 229910052772 Samarium Inorganic materials 0.000 claims description 11
- 229910052706 scandium Inorganic materials 0.000 claims description 11
- 229910052727 yttrium Inorganic materials 0.000 claims description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 150000008301 phosphite esters Chemical class 0.000 claims description 10
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 6
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical group [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000007334 copolymerization reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000012796 inorganic flame retardant Substances 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004711 α-olefin Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 3
- 239000012802 nanoclay Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 12
- 239000011247 coating layer Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 3
- 150000002910 rare earth metals Chemical class 0.000 abstract description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract 2
- 239000004703 cross-linked polyethylene Substances 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a flexible composite cable which mainly comprises a cable core. The cable core is externally covered by a coating layer and an outer sheath in sequence, and the cable core is composed of a conductor and an insulating layer. The coating layer contains polyphenyl ether resin, polyolefin elastomer, packing flame retardant, flame-retardant synergist, flexibilizer, antioxidant and composite rare earth constituent, the insulating layer is a crosslinked polyethylene insulating layer, and the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin. The invention further provides a preparation method of the flexible composite cable, the conductor is preheated and a crosslinked polyethylene insulating layer is extruded on the surface of the conductor to form the cable core, the cable core is cooled to an indoor temperature, then the coating layer is sprayed on the surface of the cooled cable core, and after the coating layer is dry, the outer sheath is sleeved on the external periphery of the coating layer to manufacture a finished cable. The flexible composite cable is fine in bending flexibility and flame retardance, high-temperature resistant, low-temperature resistant, and simple in manufacture. What's more, the flexible composite cable is convenient to lay, mount and manage, and can reach excellent electrical performance when in use, and is long in service life.
Description
Technical field
The present invention relates to a kind of cable and preparation method thereof, be specifically related to a kind of flexible compound cable and preparation method thereof.
Background technology
As everyone knows, cable is the basis of data communication, and no matter power engineering, Long-distance Control, architectural engineering are at work progress or after coming into operation, and electric power system is particularly important, cable is electric power system carrier, and strong power system, weak electricity system control by power cable, control cables respectively.
Traditional cable material, be mixed primarily of resin material, inserts, plasticizer, age resistor, fire retardant, antioxidant, formula material mainly concentrates on some conventional compositions, cause the not high or high in cost of production problem of cable technology index thus, such as specific insulation is on the low side, high temperature resistant, low temperature resistant, anti-flammability, insulating properties etc. can not meet the requirement of cable producer to insulation-grade protective cover material more high electrical performance.Traditional production technology is also had also to there is following problem: processing capacity is large, and production cost is high; Be unfavorable for the assembling of finished product, the production cycle is long; Volume is comparatively large, waste material, electric power, space, cable testing bridge, pipeline and production, the labour that lays.
Recently, the cable of composite material more and more receives the concern of people, and a purposes of composite cable is as the enhancing mechanism in the bare cable line for transmission of electricity on the ground.Although the naked transmission of electricity cable comprising aluminum matrix composite wire is known, for some application, there is the lasting requirement for obtaining the cable character improved.A kind of bending flexibility of exploitation is good, good flame resistance, high temperature resistant, low temperature resistant, and making simple flexible compound cable is the problem that art technology worker needs solution badly.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, there is provided a kind of bending flexibility good, good flame resistance, high temperature resistant, low temperature resistant, make simple flexible compound cable and preparation method thereof, this flexible compound cable is convenient to lay, and installs management, can reach excellent electrical property and long service life during use.
In order to solve above technical problem, the invention provides a kind of flexible compound cable, mainly comprising cable core, the outside of cable core is coated with coaxial coat and oversheath in turn, and cable core is made up of the insulating barrier of conductor and conductor outside, wherein:
Coat comprises following component in mass fraction: polyphenylene oxide resin: 40-45 part, polyolefin elastomer: 20-25 part, packing type fire retardant: 10-16 part, synergistic flame retardant: 12-18 part, flexibilizer: 8-15 part, antioxidant: 0.1-0.5 part, compound rare-earth: 0.5-0.8 part;
Described polyolefin elastomer is adopt ethene, butylene or carry out by ethene, octene and one or more alpha-olefins with 3-12 carbon atom the material that random copolymerization obtains, and described alpha-olefin is propylene, one or more in 1-butylene, 1-hexene, 1-octene, 1-decene, 1-laurylene etc. are also used; The mixture that described packing type fire retardant is aluminium hydroxide and Magnesium Hydroxide Inorganic Flame Retardant, the particle diameter of packing type fire retardant is 2-4 μm; Described synergistic flame retardant is imvite, diatomite, nanoclay or its mixture, and the particle diameter of synergistic flame retardant is 5-7 μm; Described flexibilizer is the one in polyamide, poly-azelaic acid acid anhydride or polyurethane; Described antioxidant is for compound antioxidant selects polynary hindered phenol type antioxidant and phosphite ester kind antioxidant according to polynary hindered phenol type antioxidant: phosphite ester kind antioxidant ratio is that the part by weight compound of 1:2 is made;
Described compound rare-earth comprises following composition by weight percentage: La:30-33%, Y:18-20%, Sc:16-18%, Gd:9-11%, Sm:8-10%, Pr:13-15%, and above each component sum is 100%;
Compound rare-earth also containing weight fraction meter 0.5-0.8 part in coat of the present invention, metallic atomic radius due to above rare earth element is large and rare earth has higher activity, be easy to the space filling up storeroom, simultaneously, the compound that rare earth element is easy and the element compounds such as oxygen, sulphur generation fusing point is high, compound rare-earth be added in the dispersiveness and compatibility that improve to a certain extent and prepare coat material, make the mixing of materials of coat evenly also improve the anti-flammability of coat material;
Insulating barrier is crosslinked polyetylene insulated layer, and the material of oversheath is halogen-free and low-smoke flame-retardant polyolefin.
The technical scheme that the present invention limits further is:
In foregoing soft composite cable, in flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 45 parts, polyolefin elastomer: 20 parts, packing type fire retardant: 13 parts, synergistic flame retardant: 12 parts, flexibilizer: 9 parts, antioxidant: 0.5 part, compound rare-earth: 0.5 part;
Compound rare-earth comprises following composition by weight percentage: La:32%, Y:19%, Sc:16%, Gd:9%, Sm:10%, Pr:14%.
In foregoing soft composite cable, in flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 40 parts, polyolefin elastomer: 25 parts, packing type fire retardant: 11 parts, synergistic flame retardant: 15 parts, flexibilizer: 8 parts, antioxidant: 0.4 part, compound rare-earth: 0.6 part;
Compound rare-earth comprises following composition by weight percentage: La:33%, Y:18%, Sc:18%, Gd:10%, Sm:8%, Pr:13%.
In foregoing soft composite cable, in flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 42 parts, polyolefin elastomer: 22 parts, packing type fire retardant: 14 parts, synergistic flame retardant: 13 parts, flexibilizer: 8 parts, antioxidant: 0.3 part, compound rare-earth: 0.7 part;
Compound rare-earth comprises following composition by weight percentage: La:30%, Y:20%, Sc:17%, Gd:11%, Sm:9%, Pr:13%.
The present invention have also been devised the preparation method of above-mentioned flexible compound cable, and concrete operations are as follows:
(1) conductor carried out preheating at 50-65 DEG C and extrude the crosslinked polyetylene insulated layer of one deck on the surface of conductor thus form the cable core of thickness at 0.07-0.09mm:
(2) cable core in step (1) is cooled, first to carrying out Air flow, with the cooling rate of 2-4 per second DEG C, insulating barrier being cooled to 35-40 DEG C, and then progressively cooling to room temperature;
(3) cable core after the cooling period sprays one deck coat on the surface, after coating drying to be coated, the periphery of coat is overlapped one deck oversheath and obtains finished cable.
The technical scheme that the present invention limits further is:
In the preparation method of foregoing soft composite cable, in step (3) when to cable core surface spraying coat, first the polyphenylene oxide resin in coat component, polyolefin elastomer, packing type fire retardant, synergistic flame retardant, flexibilizer, antioxidant and compound rare-earth are stirred in high-speed mixer, extrude through double screw extruder under the temperature range of 150-160 DEG C again, water stretching and granulation moisture are dried, for the coat of flexible compound cable.
The invention has the beneficial effects as follows:
In the present invention when the making of cable core, to be applied by insulating barrier by the mode that extrudes and form cable core on conductor, such cable core volume is little, and save material, cost is low, and the tack between edge body and conductor is good;
Polyolefin elastomer is added in coat of the present invention, microcapsule structure is formed with the coated fire retardant of elastomer, dispersed with make in polyphenylene oxide resin, improve the affinity of two-phase, the stress decreasing interface is concentrated, thus improve the combination property (as mechanical performance and fire resistance etc.) of system, simultaneously, microcapsule structure is formed with the coated fire retardant of elastomer, fire retardant is reached in fire-retardant the most effectively combine, compared to the insulation resistance adding the system of greatly reducing and the elongation at break of fire retardant in the past, elastomer is added in the present invention, the hot strength change of fire retardant is little, and the goods toughness of producing is high, resistance to low temperature is good, environmental stress cracking resistance is also improved,
Packing type fire retardant and synergistic flame retardant is adopted to combine in the present invention, when coat material mixes, packing type fire retardant and synergistic flame retardant are mixed together and packing type fire retardant is mixed itself, are connected closely, simultaneously, other material is mixed with fire retardant, be connected tightr, considerably improve the processing fluidity of product, intensity, balance between heat resistance and anti-flammability, flame retardant effect significantly improves;
Flexible compound cable bend flexibility of the present invention is good, good flame resistance, high temperature resistant, low temperature resistant, makes simple, with low cost, and this flexible compound cable is convenient to lay, and installs management, can reach excellent electrical property and long service life during use.
Accompanying drawing explanation
Fig. 1 is the structural representation of flexible compound exemplary fiber optic cable of the present invention;
In figure: 1-conductor, 2-insulating barrier, 3-coat, 4-oversheath.
Embodiment
embodiment 1
A kind of flexible compound cable that the present embodiment provides, structure as shown in Figure 1, mainly comprises cable core, and the outside of cable core is coated with coaxial coat 3 and oversheath 4 in turn, and cable core is made up of the insulating barrier 2 of conductor 1 and conductor 1 outside, wherein:
Coat 3 comprises following component in mass fraction: polyphenylene oxide resin: 45 parts, polyolefin elastomer: 20 parts, packing type fire retardant: 13 parts, synergistic flame retardant: 12 parts, flexibilizer: 9 parts, antioxidant: 0.5 part, compound rare-earth: 0.5 part;
Compound rare-earth comprises following composition by weight percentage: La:32%, Y:19%, Sc:16%, Gd:9%, Sm:10%, Pr:14%,
Polyolefin elastomer is the material adopting ethene and 1-hexene to carry out random copolymerization to obtain, the mixture that packing type fire retardant is aluminium hydroxide and Magnesium Hydroxide Inorganic Flame Retardant, and the particle diameter of packing type fire retardant is 2 μm; Synergistic flame retardant is imvite, and the particle diameter of synergistic flame retardant is 7 μm; Flexibilizer is polyamide; Antioxidant is for selecting polynary hindered phenol type antioxidant and phosphite ester kind antioxidant according to polynary hindered phenol type antioxidant for compound antioxidant: phosphite ester kind antioxidant ratio is that the part by weight compound of 1:2 is made;
Insulating barrier 2 is crosslinked polyetylene insulated layer, and the material of oversheath 4 is halogen-free and low-smoke flame-retardant polyolefin.
The preparation method of above-mentioned flexible compound cable, concrete operations are as follows:
(1) conductor carried out preheating at 55 DEG C and extrude the crosslinked polyetylene insulated layer of one deck on the surface of conductor thus form the cable core of thickness at 0.08mm:
(2) cable core in step (1) is cooled, first to carrying out Air flow, with the cooling rate of 2 DEG C per second, insulating barrier being cooled to 35 DEG C, and then progressively cooling to room temperature;
(3) cable core after the cooling period sprays one deck coat on the surface, after coating drying to be coated, the periphery of coat is overlapped one deck oversheath and obtains finished cable;
When spray coating layer, first the polyphenylene oxide resin in coat component, polyolefin elastomer, packing type fire retardant, synergistic flame retardant, flexibilizer, antioxidant and compound rare-earth are stirred in high-speed mixer, extrude through double screw extruder under the temperature range of 150 DEG C again, water stretching and granulation moisture are dried, for the coat of flexible compound cable, and then to spray.
embodiment 2
A kind of flexible compound cable that the present embodiment provides, mainly comprises cable core, and the outside of cable core is coated with coaxial coat 3 and oversheath 4 in turn, and cable core is made up of the insulating barrier 2 of conductor 1 and conductor 1 outside, wherein:
Coat 3 comprises following component in mass fraction: polyphenylene oxide resin: 40 parts, polyolefin elastomer: 25 parts, packing type fire retardant: 11 parts, synergistic flame retardant: 15 parts, flexibilizer: 8 parts, antioxidant: 0.4 part, compound rare-earth: 0.6 part;
Compound rare-earth comprises following composition by weight percentage: La:33%, Y:18%, Sc:18%, Gd:10%, Sm:8%, Pr:13%;
Polyolefin elastomer is the material adopting octene and 1-octene to carry out random copolymerization to obtain, the mixture that packing type fire retardant is aluminium hydroxide and Magnesium Hydroxide Inorganic Flame Retardant, and the particle diameter of packing type fire retardant is 4 μm; Synergistic flame retardant is nanoclay, and the particle diameter of synergistic flame retardant is 6 μm; Flexibilizer is poly-azelaic acid acid anhydride; Antioxidant is for selecting polynary hindered phenol type antioxidant and phosphite ester kind antioxidant according to polynary hindered phenol type antioxidant for compound antioxidant: phosphite ester kind antioxidant ratio is that the part by weight compound of 1:2 is made;
Insulating barrier 2 is crosslinked polyetylene insulated layer, and the material of oversheath 4 is halogen-free and low-smoke flame-retardant polyolefin.
The preparation method of above-mentioned flexible compound cable, concrete operations are as follows:
(1) conductor carried out preheating at 65 DEG C and extrude the crosslinked polyetylene insulated layer of one deck on the surface of conductor thus form the cable core of thickness at 0.09mm:
(2) cable core in step (1) is cooled, first to carrying out Air flow, with the cooling rate of 3 DEG C per second, insulating barrier being cooled to 40 DEG C, and then progressively cooling to room temperature;
(3) cable core after the cooling period sprays one deck coat on the surface, after coating drying to be coated, the periphery of coat is overlapped one deck oversheath and obtains finished cable;
When spray coating layer, first the polyphenylene oxide resin in coat component, polyolefin elastomer, packing type fire retardant, synergistic flame retardant, flexibilizer, antioxidant and compound rare-earth are stirred in high-speed mixer, extrude through double screw extruder under the temperature range of 160 DEG C again, water stretching and granulation moisture are dried, for the coat of flexible compound cable, and then to spray.
embodiment 3
A kind of flexible compound cable that the present embodiment provides, mainly comprises cable core, and the outside of cable core is coated with coaxial coat 3 and oversheath 4 in turn, and cable core is made up of the insulating barrier 2 of conductor 1 and conductor 1 outside, wherein:
Coat 3 comprises following component in mass fraction: polyphenylene oxide resin: 42 parts, polyolefin elastomer: 22 parts, packing type fire retardant: 14 parts, synergistic flame retardant: 13 parts, flexibilizer: 8 parts, antioxidant: 0.3 part, compound rare-earth: 0.7 part;
Compound rare-earth comprises following composition by weight percentage: La:30%, Y:20%, Sc:17%, Gd:11%, Sm:9%, Pr:13%;
Polyolefin elastomer is the material adopting butylene and 1-decene to carry out random copolymerization to obtain, the mixture that packing type fire retardant is aluminium hydroxide and Magnesium Hydroxide Inorganic Flame Retardant, and the particle diameter of packing type fire retardant is 3 μm; Synergistic flame retardant is diatomite, and the particle diameter of synergistic flame retardant is 5 μm; Flexibilizer is polyurethane; Antioxidant is for selecting polynary hindered phenol type antioxidant and phosphite ester kind antioxidant according to polynary hindered phenol type antioxidant for compound antioxidant: phosphite ester kind antioxidant ratio is that the part by weight compound of 1:2 is made;
Insulating barrier 2 is crosslinked polyetylene insulated layer, and the material of oversheath 4 is halogen-free and low-smoke flame-retardant polyolefin.
The preparation method of above-mentioned flexible compound cable, concrete operations are as follows:
(1) conductor carried out preheating at 50 DEG C and extrude the crosslinked polyetylene insulated layer of one deck on the surface of conductor thus form the cable core of thickness at 0.07mm:
(2) cable core in step (1) is cooled, first to carrying out Air flow, with the cooling rate of 4 DEG C per second, insulating barrier being cooled to 38 DEG C, and then progressively cooling to room temperature;
(3) cable core after the cooling period sprays one deck coat on the surface, after coating drying to be coated, the periphery of coat is overlapped one deck oversheath and obtains finished cable;
When spray coating layer, first the polyphenylene oxide resin in coat component, polyolefin elastomer, packing type fire retardant, synergistic flame retardant, flexibilizer, antioxidant and compound rare-earth are stirred in high-speed mixer, extrude through double screw extruder under the temperature range of 155 DEG C again, water stretching and granulation moisture are dried, for the coat of flexible compound cable, and then to spray.
In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of application claims.
Claims (6)
1. a flexible compound cable, is characterized in that: mainly comprise cable core, and the outside of described cable core is coated with coaxial coat and oversheath in turn, and described cable core is made up of the insulating barrier of conductor and conductor outside, wherein:
Described coat comprises following component in mass fraction: polyphenylene oxide resin: 40-45 part, polyolefin elastomer: 20-25 part, packing type fire retardant: 10-16 part, synergistic flame retardant: 12-18 part, flexibilizer: 8-15 part, antioxidant: 0.1-0.5 part, compound rare-earth: 0.5-0.8 part;
Described polyolefin elastomer is adopt ethene, butylene or carry out by ethene, octene and one or more alpha-olefins with 3-12 carbon atom the material that random copolymerization obtains, and described alpha-olefin is propylene, one or more in 1-butylene, 1-hexene, 1-octene, 1-decene, 1-laurylene etc. are also used; The mixture that described packing type fire retardant is aluminium hydroxide and Magnesium Hydroxide Inorganic Flame Retardant, the particle diameter of packing type fire retardant is 2-4 μm; Described synergistic flame retardant is imvite, diatomite, nanoclay or its mixture, and the particle diameter of synergistic flame retardant is 5-7 μm; Described flexibilizer is the one in polyamide, poly-azelaic acid acid anhydride or polyurethane; Described antioxidant is for compound antioxidant selects polynary hindered phenol type antioxidant and phosphite ester kind antioxidant according to polynary hindered phenol type antioxidant: phosphite ester kind antioxidant ratio is that the part by weight compound of 1:2 is made;
Described compound rare-earth comprises following composition by weight percentage: La:30-33%, Y:18-20%, Sc:16-18%, Gd:9-11%, Sm:8-10%, Pr:13-15%, and above each component sum is 100%;
Described insulating barrier is crosslinked polyetylene insulated layer, and the material of described oversheath is halogen-free and low-smoke flame-retardant polyolefin.
2. flexible compound cable according to claim 1, it is characterized in that: in described flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 45 parts, polyolefin elastomer: 20 parts, packing type fire retardant: 13 parts, synergistic flame retardant: 12 parts, flexibilizer: 9 parts, antioxidant: 0.5 part, compound rare-earth: 0.5 part;
Described compound rare-earth comprises following composition by weight percentage: La:32%, Y:19%, Sc:16%, Gd:9%, Sm:10%, Pr:14%.
3. flexible compound cable according to claim 1, it is characterized in that: in described flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 40 parts, polyolefin elastomer: 25 parts, packing type fire retardant: 11 parts, synergistic flame retardant: 15 parts, flexibilizer: 8 parts, antioxidant: 0.4 part, compound rare-earth: 0.6 part;
Described compound rare-earth comprises following composition by weight percentage: La:33%, Y:18%, Sc:18%, Gd:10%, Sm:8%, Pr:13%.
4. flexible compound cable according to claim 1, it is characterized in that: in described flexible compound cable, coat comprises following component in mass fraction: polyphenylene oxide resin: 42 parts, polyolefin elastomer: 22 parts, packing type fire retardant: 14 parts, synergistic flame retardant: 13 parts, flexibilizer: 8 parts, antioxidant: 0.3 part, compound rare-earth: 0.7 part;
Described compound rare-earth comprises following composition by weight percentage: La:30%, Y:20%, Sc:17%, Gd:11%, Sm:9%, Pr:13%.
5. the preparation method of flexible compound cable described in arbitrary claim in claim 1-4, it is characterized in that, concrete operations are as follows:
(1) conductor carried out preheating at 50-65 DEG C and extrude the crosslinked polyetylene insulated layer of one deck on the surface of conductor thus form the cable core of thickness at 0.07-0.09mm:
(2) cable core in step (1) is cooled, first to carrying out Air flow, with the cooling rate of 2-4 per second DEG C, insulating barrier being cooled to 35-40 DEG C, and then progressively cooling to room temperature;
(3) cable core after the cooling period sprays one deck coat on the surface, after coating drying to be coated, the periphery of coat is overlapped one deck oversheath and obtains finished cable.
6. the preparation method of flexible compound cable according to claim 5, it is characterized in that, in step (3) when to cable core surface spraying coat, first the polyphenylene oxide resin in coat component, polyolefin elastomer, packing type fire retardant, synergistic flame retardant, flexibilizer, antioxidant and compound rare-earth are stirred in high-speed mixer, extrude through double screw extruder under the temperature range of 150-160 DEG C again, water stretching and granulation moisture are dried, for the coat of flexible compound cable.
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